Способ изготовления изделий из термопластов

Червячный пресс для многоручьевой экструзии полимеров

Устройство для формования трубчатых изделий из термопластов

Изобретение относится к области переработки термопластов. Цель изобретения - повышение качества получаемых трубчатых изделий и экономия термопластов. Устройство для формования трубчатых изделий из термопластов содержит экструдер и экструзией- ную головку. В корпусе головки соос- но последовательно смонтированы рас-. плавопровод с рассекателем потока и кольцевым плунжером с толкателями и дорн с матрицей. Они смонтированы с образованием соответственно накопительной камеры, пережимной зоны и кольцевого формующего канала. Устройство содержит гидропривод. Он выполнен в виде силового поршня и силового гидроцилиндра. Силовой поршень закреплен на дорнодержателе. Последний размещен в корпусе головки. Дорн также закреплен на дорнодержателе . Толкатели связаны с силовым поршнем. Последний смонтирован с возможностью перемещения вдоль оси дорнодержателя. По наружной поверхности дорна в пережимной зоне выполнено утолп ение. Гидропривод дополнительно снабжен рабочим поршнем и регулировочным винтом. Регулировочный ...

Калибрующая насадка экструдера

КАЛИБРУЮЦАЯ НАСАДКА ЭКСТРУ- ДЕРА, например для изготовления труб из термопластов, включающая прикрепленный к головке экструдера цилиндрический охлаждаемый корпус.соединенный с виброустройством, о т-~ личающаяся тем, что, с целью увеличения производительности экструдера, виброустройство выполнено в виде двух установленшлх на диаметрально противоположных сторонах корпуса насадки 'электровибраторов, сердечники с катушкой которых жестко соединены с кольцевой скобой, укрепленной на корпусе экструзионной головки.

Экструзионный агрегат

И.и)Г)рст(ннс относится к об.тасти перс работки H, li ичд1 лия и можсг быть ис11О,Т1)Човано в экст|1у (ионном оборудовании .1,тя (tiopMOHaHHH грубчат1)1.х чаготовок. Цс. и. изобретенияиовьинение нрои:1води i е. и, ности агрегата и качества но.тучасмых илдс- ,1ий. Л.1Я :(Г01() :1кстру (ионнви агрсгат содержит : кструдер, 1,1овук) :(кст)у июннук) ГО,ТОВКу с 11О,П1.1М KOpnyctJM, В.ХОДНЫМ и НЫ.ХОДным (ггверстиями и рабочей поверхностью. В НОЛОСТИ корпуса уСТаНОВЛСНь с oopil l i:i,i HHi M (|)о|1мук)1не| о ia «ipa доно. IHH le. i :,i-ы ;. ocH(Muioii дорн1.1 с нар жными рабочими г, всрхностями. Лоно. 1НИТС.11) .юри ci:iH(iii .HMI относите. II,но корпуса и oi iioiuioi о .1()рна с образованием доно 1ппчмьно1 о и ос ионного юснреде. игг мьны кана.юв, KOMI смешены о.чии огносите. и.но ipx ioiD i-; inOCKOv ГН, НС р1Н. 11ДИК. Ulplliu l оси iillOHKH I ы11о,.Т11ены с уменыненнем их ширины па11рав,теиии, |ротиво11о, (jiop нннс му чачору. Наружная рабочая iioiupxHoeii ;1(Н1о.-1ННте, дорна ксцен i рична ...

Устройство для поперечной резки труб

Изобретение относится к механической обработке полимерных материалов и служит для поперечной резки труб. Цель - повышение производительности. Для этого устройство снабжено силовым цилиндром, кольцевой копир выполнен разрезным с откидным дуговым участком, один конец которого шарнирно связан с копиром. Силовой цилиндр установлен с возможностью взаимодействия своим штоком с откидным дуговым участком копира. При работе цилиндр перемещает дуговой участок и нож перемещаются к трубе. 3 ил.

Экструзионная головка для переработки полимерных материалов

Изобретение относится к экструзионной переработке полимерных материалов. Целью изобретения является повышение производительности, качества и экономичности процесса экструзии. Экструзионная головка содержит корпус с нагревателем и рабочий элемент из пористого материала, в котором выполнен формующий канал. В корпусе выполнена смазочная камера, сообщенная с трубопроводами подачи смазки. Головка имеет пористые элементы, установленные между трубопроводом подачи смазки и смазочной камерой. При работе смазка из трубопровода поступает в пористый элемент, где разделяется на ряд потоков в микроканалах пористого элемента. За счет тепла нагревателя смазка нагревается и поступает в формующий канал. наличие пористого элемента, в котором происходит нагрев смазки, предохраняет рабочий элемент от охлаждения и возникновения неустойчивых режимов течения, что повышает производительность процесса и качество изделий. 2 ил.

Ванна для охлаждения пластмассовых труб

Изобретение относится к области полимерного машиностроения и может быть использовано для охлаждения тонкостенных пластмассовых, например, гофрирова нных труб. Цель изобретения - повышение производительности и улучшение качества получаемых труб за счет интенсификации их охлаждения. Для этого ванна для охлаждения пластмассовых труб содержит корпус с входным и выходньми отверстиями, и коллектор , который связан с устройством для подачи 7КИДКОГО хладагента на поверхность пластмассовой трубы. Оно выполнено в виде рабочих трубок с отверстиями на их боковых сторонах. Трубки параллельны между собой и смонтированы в коллекторе с возможностью их поворота для направления подачи трубы. Ванна содержит устройство для удаления остатков хладагента с поверхности пластмассовой трубы, которое выполнено в виде газовой камеры . Камера выполнена в виде конической гильзы, установленной между коллектором и выходным отверстием корпуса. Труба поступает в ванну между рабочими трубками. Направляется к коллектору.

Устройство для изготовления армированных термопластичных труб

Изобретение относится к промышленности переработки полимеров. Оно может быть использовано для получения термопластичных труб. Цель изобретения - повышение долговечности труб. Для этого устройство содержит червячный пресс с экс- трузионной прямоточной головкой, механизм подачи продольной и поперечной металлических арматур. На головке смонтированы спиралеобразователь и узел для сварки жесткого металлического каркаса. Головка выполнена в виде смонтированной соосно спиралеобразователю и связанной с ним камеры нанесения внутреннего слоя расплава термопласта. Камера выполнена с входным и выходным отверстиями. В камере соосно ей установлена полая направляющая гильза. Устройство дополнительно снабжено угловой экструзионной головкой. В гильзе выполнены питающие каналы для подачи расплава термопласта внутреннего слоя. Входные отверстия питающих каналов размещены во входном отверстии камеры. Гильза установлена в камере с образованием формующего зазора. Он сообщен с атмосферой со стороны выходного ...

Установка для производства погонажных полимерных изделий методом шнекового прессования

Изобретение относится к оборудованию , предназначенному для комплектации ъ химической промьшшенности линий на базе червячных прессов, используемых для производства трубок, лент и других профильно-погонажных изделий из полиэтилена, поливинил- хлорида и аналогичных материалов, цель изобретения - повьшение производительности установки и качества получаемых изделий за счет устранения остаточных деформаций и повьше- ния размерной точности изделий путем интенсификации и гибкого управления процессом их охлаждения и приема. .Кроме того, изобретение способствует расширению технологических возможностей установки за счет регулирования глубины клина обода тянущего устройства при подаче на него изделия друго-f го размера. Установка содержит ванну охлаждения, W-образный лоток с про-, резями в 60КОВ61Х стенках, перекрываемыми задвижками. Установка содержит также систему принудительной подачи и рециркуляции жидкости в виде насоса , коллектора и самоочтцаемых форсунок . Тянущее устройство представляет собой ...

Способ изготовления полосовых полимерных армированных заготовок

Установка для изготовления термопластической заготовки

Устройство для изготовления труб с поперечными ребрами из термопластичного полимера

Способ тепловой изоляции трубы

Изобретение относится к области строительства трубопроводов и может быть использовано при нанесении теплоизоляции на металлические трубы. Целью изобретения является повышение изоляционных свойств наносимой на трубу пенопластовой изоляции и снижение расхода материала, что достигается за счет нанесения на трубу по крайней мере одной образующей внутренний слой, пластической компо- зии, имеющей плотность 0,024 - 0,096. г/см, и второй, образующей наружный слой пластической композиции, имеющей плотность по крайней мере на 25% выше, чем у внутреннего слоя, и толщину, составляющую 5-30% общей толщины слоев, 2 ил. 00 ел СП N3 ...

Устройство для изготовления труб из термопластических синтетических материалов (его варианты)

... 1. Устройство для изготовления труб из термопластических синтетических материалов, содержащее присоединяемый к узлу пластикации корпус головки с кольцевой сопловой щелью, образованной между неподвижно закрепленным в корпусе дерном и трубообразным мундштуком, охватывающим с зазором наружную концевзпо часть дорна, причем мундштук смонтирован с торцовой стороны на корпусе посредстве шаровой опоры и закреплен на корпусе подпружиненньми винтами , отличающееся тем, что, с целью повыа1ения качества изделий за счет обеспечения точной регулировки кольцевой щели головки, устройство снабжено по меньшей мере двумя кольцеобразньми косоугольньми шайбами, размещенньми за пределами шаровой опоры между корпусом и мундСО штуком и смонтированнм4и с возможностью поворота относительно друг друга. W ел ...

Устройство для производства полых изделий из термопластов

Способ изготовления корпуса капсулы

СПОСОБ ИЗГОТОВЛЕНИЯ КОРПУСА КАПСУЛ) путем погружения штифта с выполненным на нем кольцевьм желобком в желатиновую массу выше сужения, извлечения штифта из массы, снятия образовавшегося после затвердевания массы корпуса капсулы с погружного штифта с последующим срезанием корпуса на заданную длину, о т л и ч а ющ и и с я тем, что, с целью устранения деформации стенок при соединении корпуса с крьш1кой, срезание производят в зоне наименьшего диаметра кольцевого желобка.

Установка для изготовления полых изделий из полимерных материалов

... 1. УСТАНОВКА ДЛЯ ИЗГОТОВЛЕНИЯ ПОЛЫХ ИЗДЕЛИЙ ИЗ ПОЛИМЕРНЫХ МАТЕРИАЛОВ, содержащая поворотный J9 V за стол с размещенными по его периферии открытыми вверх матрицами, соответствующие матрицам подвижные в вертикальном направлении пуансоны и устройство для подачи материала, отличающаяся тем, что, с целью повышения качества изделий за счет исключения потерь тепла при загрузке матриц, устройство для подачи материала размещено над поворотным столом соосно матрицам, а пуансоны установлены на поворотном столе с возможностью поворота в вертикальной плоскости, причем выходная часть устройства для подачи материала выполнена в виде кольцевого сопла с запирающим элементом.

"Устройство для изготовления ребристых труб экструдированием

Экструзионная головка для облицовки стальных труб термопластом

Способ изготовления нетканого армированного материала

Экструзионная головка для изготовления двухслойных полимерных труб

Устройство для изготовления ребристых труб с гладкой внутренней поверхностью из пластического материала

Изобретение относится к изготовлению ребристых труб с гладкой внутренней поверхностью из пластических материалов. Оно может быть использовано в химической промышленности. Цель изобретения - повышение качества труб. Для этого устройство содержит стержень, установленный по центральной оси устройства. Вокруг стержня прессуется подаваемый из сопла пластифицированный материал. Сердечник, имеющий постоянный диаметр, устанавливается в торцовой части стержня для калибрации внутренней поверхности трубы. Внешняя поверхность трубы формуется с помощью перемещающихся в аксиальном направлении постоянных литейных форм. Торцовая зона сердечника снабжена средством для охлаждения внутренней поверхности трубы. Литейные формы имеют канавки для формования ребер трубы. За счет установки в начальной зоне сердечника средства для обогревания внутренней поверхности трубы и за счет выполнения поверхности начальной зоны так, чтобы она расширялась на конус в направлении технологического процесса, устраняются неровности ...

Устройство для изготовления многослойных армированных труб из пластмассы

Установка для изготовления чашеобразных упаковочных сосудов из термопластичного материала

Apparatus for producing multiple channel duct assembly and method

Multiple channel duct assembly for cables.

The multiple channel duct assembly for cables comprises of a plurality of plastic inner ducts (10) contiguous, co-di-rectionally extending, substantially parallel, in abutting contact with each other, each of said inner ducts (10) having the cross sectional areas sufficient to contain over their entire length to retain them in their contiguous relationship; wherein said outer duct (20) has a corrugated tubular section including plurality of contiguous ridges (21) and troughs (22) extending over the entire length; whereby said assembly is so flexible that it can be coiled around transportable reels (30) as well as so strong that it can withstand dirt in a trench. The aspect of inner ducts (10) of plastic with less friction provides sufficiently smoooth inside surfaces to the inner ducts (10), through which fiber optic cables, eletric wires or the likes are inserted.

Apparatus for producing multiple channel duct assembly and method thereof.

The present invention resides in that a plurality of pre-molded inner ducts are fed to a cross-head die, and a melted outer duct is extruded around the inner ducts from the cross-head die, and then the pre-molded inner ducts and a melted outer duct are supplied into the corrugated tunnel of a molding die in which a melted outer duct is molded to have corrugations, thus producing a multiple channel duct assembly which includes a plurality of elongated inner ducts and a corrugated outer duct which encircles the inner ducts over their entire length to retain them. This method of continuously manufacturing a multiple channel duct assembly by using an extrusion molding machine with a cross-head die and a molding means has not been known heretofore.

Multiple channel duct assembly for cables.

Process improved for the production and the treatment of worked objects and a product manufactured by such a process.

Multiple channel duct assembly for cables

Multilayer pipeline in a polymer material, device for manufacture of the multilayer pipeline and a method for manufacturing the multilayer pipeline

Polymer composition comprising a blend of a multimodal polyethylene and a further ethylene polymer suitable for the production of a drip irrigation pipe

Methods and istallations for manufacturing biaxially oriented tubing and the tubing itself.

FLAME-ADVERSE POLYCARBONATE MOLDING MATERIALS FOR APPLICATIONS OF EXTRUDINGS

CATHETER WITH CONTROLLED FLEXIBILITY AND PROCEDURE FOR THE PRODUCTION

MULTI-LAYER TUBULÄRE STRUCTURE WITH APPLICATION IN THE PRODUCTION OF CATHETERS

PROCEDURE FOR THE PRODUCTION OF BY GRAFTING A SILANE CONNECTION IN PRESENCE OF HUMIDITY INTERLACE-CASH THERMOPLASTICS OR ELASTOMERS

PROCEDURE AND EXTRUDING TOOL FOR THE EXTRU DIEREN OF PROFILES FROM THERMOPLASTIC PLASTIC

DEVICE TO THE EXTRUSION OF PIPES FROM THERMOPLASTIC PLASTIC

CALIBRATING EQUIPMENT

DEVICE FOR CALIBRATING A FROM AN EXTRUSION CONTINUOUS WITHDRAWING ART OF MATERIAL PROFILE

PROCEDURE AND DEVICE FOR THE PRODUCTION OF MEDICAL INSTRUMENTS USING MICROWAVE ENERGY

PROCEDURE AND DEVICE FOR THE PRODUCTION OF DOUBLE-WALLED PIPES FROM THERMOPLASTIC ONE KUSTSTOFF WITH RING OR SCREW-SHAPED OF GERILLTER EXTERNAL WALL AND SMOOTH INNER WALL

BLOWING DEVICE FOR MAKING HOLLOW BODIES OF THERMOPLASTIC PLASTIC

DEVICE FOR EXTRUDING PIPES, WITH LUFTTURBULENZ IN FORM TUNNELS

PROCEDURE FOR THE CONTINUOUS PRODUCTION FROM PLASTIC TUBES BY BIAXIALES PULLING AND PRODUCTION LINE TO THE EXECUTION OF THE PROCEDURE

DEVICE FOR COOLING AND CALIBRATING PLASTIC PROFILES

PROCEDURE AND DEVICE FOR THE PRODUCTION OF PLASTIC PROFILES

SPRAYING DEVICE AND - PROCEDURES FOR PLASTIC OBJECTS

PRODUCTION OF HOSES OR OTHER ELONGATED ARTICLES

STRANGPRESSKOPF FOR COVERING UP STEEL TUBES WITH THERMOPLASTIC PLASTIC

PROCEDURE AND DEVICE FOR PRODUCING A FROM THERMOPLASTIC PLASTIC EXISTING SHROUD OF STEEL TUBES

PROCEDURE AS WELL AS KOEXTRUSIONSBLASKOPF FOR THE PRODUCTION OF MULTI-LAYER BLOWING FOILS

OPTICAL PLASTIC PRODUCT, OPTICAL PLASTIC FIBER, DEVICE FOR THE PRODUCTION OF AN OPTICAL PLASTIC PART AND PROCEDURE FOR THE PRODUCTION OF AN OPTICAL PLASTIC PART AND AN OPTICAL PLASTIC PRODUCT

DEVICE FOR THE PRODUCTION OF HOSES

PROCEDURE FOR COVERING UP STEEL TUBES WITH A COAT LAYER FROM THERMOPLASTIC PLASTIC

PROCEDURE AND DEVICE FOR THE CONTINUOUS PRODUCTION OF FIBER-REINFORCED PLASTIC TUBES

DEVICE FOR CONTINUOUS MAKING OF BLASFOLIEN FROM PLASTIC, IN PARTICULAR OF RIGID ONE PPOLYVINYLCHLORID

EXTRUDING PLANT WITH AT LEAST ONE DRAWOUT DEVICE

PROCEDURE FOR THE PRODUCTION OF A PLASTIC FILM

PROCEDURE FOR BLAST PIPES OF HOHLKORPERN FROM THERMOPLASTIC PLASTIC

Procedure for the continuous production of endless, helically curved Kunststoffschäuchen and/or - intestines

DEVICE FOR THE PRODUCTION OF A OUTER-CALIBRATED PLASTIC PROFILE STRAND

PROCEDURE AND DEVICE FOR CONTINUOUS MANUFACTURING OF PLASTIC TUBES WITH TRANSVERSE SHAPINGS, CONSISTING OF AT LEAST TWO LAYERS

PROCEDURE AND DEVICE FOR THE PRODUCTION OF A DOUBLE-WALLED THERMOPLASTIC PIPE WITH A CONNECTING SLEEVE

PLANT FOR THE PRODUCTION OF A MULTI-LAYER COMPOUND PIPE

MULTILEVEL PLASTIC LINE WITH PVC LAYER

BREAKDOWN-SAFE TYRE

HEAT EXCHANGER PIPE

PROCEDURE AND DEVICE FOR THE PRODUCTION OF A DROP IRRIGATION LINE

PROCEDURE FOR THE PRODUCTION OF A COAT FOR A THERMALLY INSULATED CONDUIT

EXTRUDING HEAD

MEDICAL HOSE AND EXTRUDING NOZZLE TO ITS PRODUCTION

ASSEMBLY PROCEDURE AND PLASTIC COMPOUND PIPE

EXTRUSION OF ARTICLES

PROCEDURE FOR THE PRODUCTION AND SHROUD OF PLASTIC TUBES OR METAL TUBES

EXTRUDING HEAD WITH NOZZLE GAP ATTITUDE

PROCEDURE FOR THE PRODUCTION OF A EVOHZUSAMMENSETZUNG

PROCEDURE FOR THE DETERMINATION OF A LOCAL COORDINATE OF ONE POINT AT A FROM AN EXTRUDING TOOL URGENT STRAND

METHOD FOR THE PRODUCTION OF DROP IRRIGATION PIPES

PROCEDURE FOR THE PRODUCTION MAD BODY FROM IMPACTTOUGH PLASTIC

PROCEDURE FOR THE PRODUCTION A ZELLULAREN OF A STRUCTURE ON PLASTIC BASIS AND PROCEDURE FOR THE CONVERSION OF THIS PROCEDURE

FORM-STABLE BALLOONS

DEVICE FOR THE PRODUCTION OF PLASTIC TUBES

SHAPING MECHANISM AS WELL AS PROCEDURE FOR THE SHAPING AND COOLING OF ARTICLES, IN PARTICULAR HOLLOW SECTIONS

PROCEDURE AND DEVICE FOR APPLYING A REINFORCEMENT ON A PLASTIC TUBE BY A WINDING WELDING METHOD

PROCEDURE AND DEVICE FOR THE PRODUCTION OF PLASTIC CONTAINERS

CARRYING ARRANGEMENT FOR AN EXTRUDING TOOL AND PROCEDURE FOR THE EXTRUDING OF AN ARTICLE

IMPROVED MECHANICAL COMPONENT FROM TWO-COMPOSITE LAYER

VERY LOW-TEMPERATURE-IMPACTTOUGH, STRAINING MULTI-LAYER LAMINATE ON PP BASIS

DEVICE FOR THE PRODUCTION OF HOSE-WELL-BEHAVED VORFORMLINGE WITH ASYMMETRICAL ANNULAR PISTON

VACUUMFORM TOOL FOR THE PRODUCTION OF A CORRUGATED PIPE, THE HERGESTELLE PIPE AND PROCEDURE

PROCEDURE AND DEVICE FOR THE BUILDING OF PNEUMATIC TIRES

PROCEDURE FOR THE PRODUCTION OF A FLEXIBLE ENDOSCOPE TUBE

PROCEDURE FOR THE PRODUCTION OF A COATED COMPOUND PRODUCT

DEVICE FOR MAKING A HOLLOW BODY OF THERMOPLASTIC PLASTIC

PROCEDURE FOR THE PRODUCTION OF HOLLOW BODIES

MORE KAPSELKOERPER FOR A DRUG PUTTING CAP AS WELL AS PROCEDURE FOR ITS PRODUCTION

THERMOPLASTIC MEHRWANDIGES PIPE, AND EN DRIVING TO ITS PRODUCTION

Automotive Fuel Lines Including A Polyarylene Sulfide

A fuel line comprising a thermoplastic composition is described. The thermoplastic compositions exhibit high strength and flexibility and can be used to form one or more layers of single layer or multi-layer fuel lines. Methods for forming the thermoplastic compositions are also described. Formation methods include dynamic vulcanization of a composition that includes an impact modifier dispersed throughout a polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures. 1. A fuel line comprising a thermoplastic composition , the thermoplastic composition including a polyarylene sulfide and a crosslinked impact modifier , the fuel line being a tubular member and including a hollow passage therethrough in the axial direction of the tubular member for passage of a fluid.2. The fuel line of claim 1 , wherein the thermoplastic composition has one or more of the following characteristics:{'sup': '2', 'a notched Charpy impact strength of greater than about 3 kJ/mas determined according to ISO Test No. 197-1 at 23° C.;'}a tensile modulus of less than about 3000 MPa as determined according to ISO Test No. 527 at a temperature of 23° C. and a test speed of 5 mm/min;an elongation at yield of greater than about 4.5% as determined according to ISO Test No. 527 at a temperature of 23° C. and a test speed of 5 mm/min;{'sup': '2', 'a notched Charpy impact strength of greater than about 8 kJ/mas measured according to ISO Test No. 179-1 at a temperature of −30° C.;'}a flexural modulus of less than about 2500 MPa as measured according to ISO Test No. 178 at a temperature of 23° C. and a test speed of 2 mm/min;a deflection temperature under load of greater than about 80° C. as determined ...

Medical device having outer polymeric member including one or more cuts

A medical device includes an outer polymeric tubular member and an inner tubular member. The outer polymeric tubular member includes one or more cuts formed therein to increase flexibility of the outer polymeric tubular member and includes an inner surface. The inner tubular member extends through the outer polymeric tubular member and has an outer surface in slidable contact with the inner surface of the outer polymeric tubular member. The outer polymeric tubular member is able to move relative to the inner tubular member as the medical device bends. In an example, the outer tubular member may be formed of a heat shrink material.

Method for preparing aromatic polyamide porous hollow fiber membrane

A method for preparing an aromatic polyamide porous hollow fiber membrane firstly premixes PPTA resin, solvent, composite pore-forming agents and inorganic particles in a stirring vessel to form casting solution, secondly injects the casting solution into a double-screw extruder to be fully dissolved under the effect of shear force and enters a spinneret via a metering pump. The PPTA hollow fiber membranes are prepared by the dry-wet spinning method, which solves the problems that hard pore-forming and low porosity in the preparation process of PPTA porous membrane. Utilization of the double-screw extruder is capable of greatly shortening the dissolved time and the deaeration time. Meanwhile the increase of PPTA in casting solution also improves mechanical properties of the PPTA membrane. The addition of the inorganic particles improves mechanical toughness and enhance pure water flux, hydrophilia and rejection rate. 1. A method for preparing an aromatic polyamide porous hollow fiber membrane , comprising adopting a casting solution and a filming technology;wherein components of the casting solution and mass fractions thereof are:PPTA resin 1%-20%;pore-forming agents 5%-20%;solvent 60%-94%; wherein a sum of the mass fractions of the PPTA, pore-forming agents and solvent is 100%;inorganic particles 0.05-50% of the weight of PPTA resin;wherein logarithmic specific concentration viscosity of the PPTA resin is at a range of 4.5 dL/g-9.5 dL/g;the pore-forming agents are a water-soluble macromolecule and are selected from the group consisting of PEG with an average molecular weight of 1000-20000 and PVP with an average molecular weight of 10000-1000000;the solvent is sulfuric acid having a mass concentration at a range of 98%-106%;the inorganic particles are at least one member selected from the group consisting of silicon dioxide, calcium oxide and calcium carbonate;wherein the method for preparing the aromatic polyamide porous hollow fiber membrane comprises steps of:(1 ...

METHOD AND DEVICE FOR EXTRUSION OF HOLLOW PELLETS

Described herein are extrusion processes to produce hollow pellets. Also disclosed are pelletizer devices that can be used to produce the hollow pellets. The processes and devices make use of an extrusion die having a die orifice and an insert that is placed in the die orifice to produce the hollow pellets. 1. An extrusion process for producing hollow pellets , the process comprising:extruding molten material through an extrusion die comprising a die hole and an insert disposed in the die hole, wherein the insert comprises a rear section and a forward section, the rear section comprises a hollow can and the forward section comprises a mandrel, the mandrel comprises a plurality of fins, and the fins maintain the position of the mandrel in the die hole as the molten material is extruded;cooling the extruded molten material effective to produce a pellet having a hollow cavity.2. The process of claim 1 , wherein the molten material flows through the hollow can of the rear section of the insert.3. The process of claim 1 , wherein the molten material passes through at least one hole disposed between the hollow can of the rear section of the insert and the fins of the mandrel.4. The process of claim 1 , wherein the fins comprise protrusions that abut the die hole to maintain the position of the mandrel as the molten material flows around the fins of the mandrel.5. The process of claim 1 , wherein at least one of the fins of the mandrel is tapered.6. The process of claim 1 , wherein the mandrel further comprises a protrusion to squeeze the molten material into a uniform flow.7. The process of claim 1 , wherein the can is threaded.8. The process of claim 1 , wherein the mandrel is a removable mandrel.9. The process of claim 8 , wherein the mandrel may be threadedly attached to the can.10. The process of claim 1 , wherein the hollow cavity penetrates a first surface of the pellet and continuously extends through a second surface of the pellet.11. The process of claim 1 , ...

PYLON SNAP JACKET ENCASEMENT

The present invention provides a protective coating for protecting a substrate from deleterious elements present in environments in which the substrates are deployed and methods and apparatus for deploying a PVC encasement with a longitudinal snap jacket of suitable length and girth to coat a pylon substrate or building girder and provide a filler within the snap jacket and around an encased pylon. 1. A method of providing a pylon substrate with a longitudinal snap jacket protective encasement , said method comprising steps of:opening the longitudinal snap jacket encasement wide enough to insert the pylon substrate within an interior of the longitudinal snap jacket encasement;securing the snap jacket in a closed position; andpouring a flowable mixture into an area bordered by the longitudinal snap jacket encasement.2. A longitudinal snap jacket encasement system comprising:a PVC encasement with a longitudinal snap jacket around a pylon substrate with the snap jacket fastened in a closed position; anda flowable mixture poured in between the pylon substrate and the PVC encasement with a longitudinal snap jacket. This This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/336,171 filed May 13, 2016, and entitled “PYLON ENCASEMENT WITH LONGITUDINAL SPLIT COLLAR”; and also claims priority as a continuation in part to U.S. Non-Provisional patent application Ser. No. 14/746,912, filed Jun. 23, 2015, and entitled “SUBSTRATE WITH PROTECTIVE POLYVINYL CHLORIDE SLEEVE” which in turn is a Continuation in Part of application Ser. No. 14/312,663, filed Jun. 23, 2014, and entitled “EXTRUDED HEAT SHRINK PROTECTIVE SEAMLESS PVC PILING SLEEVE AND METHOD”, the entire contents of which are incorporated herein by reference.The present invention relates generally to methods and apparatus for repairing pylons. More specifically, the present invention provides methods and apparatus for a manufacturing and deploying protective polyvinyl chloride encasement ...

LOW COST SPINNING AND FABRICATION OF HIGH EFFICIENCY (HE) HAEMODIALYSIS FIBERS AND METHOD THEREOF

The present invention relates to an apparatus and a method to spin hollow fibres of dialysis grade with diameter around 220 microns and thickness of around 35-40 microns, by wet spinning technique. The present invention spinning is carried out by using an apparatus having a nitrogen cylinder (), water bucket (), polymer cylinder (), water cylinder (), automatic winding machine () characterized by a cheap assembly of syringes (dispo van () and insulin syringes ()) wherein no electrical power is required for the spinning, making the fibres extremely easy to manufacture and affordable at the consumer end. 1. An apparatus to spin hollow fibres of dialysis grade , said apparatus comprising a cylinder containing gas , a bucket means for storage and/or collection of water ,an automatic winding machine, an assembly of needles characterized in that the said assembly of needles comprising dispo van syringe having a dispo van needle defining an outer needle; andinsulin syringe having an insulin needle defining an inner needle inserted inside said outer needle at an appropriate angle.2. An apparatus as claimed in claim 1 , wherein the said inner needle is bent at an angle of about 120° and inserted into the said outer needle.3. An apparatus as claimed in claim 1 , wherein the said outer needle is a dispo van size 22 needle having around 700 microns diameter.4. An apparatus as claimed in claim 1 , wherein the said inner needle is a 32 gauge insulin needle having around diameter of 230 microns.5. An apparatus as claimed in claim 1 , wherein the said inner needle is adapted to carry anti solvent used for phase inversion.6. An apparatus as claimed in claim 1 , wherein the said outer needle and said inner needle arrangement defines a shell through which the polymer flows.7. An apparatus as claimed in claim 1 , wherein the said needles are sealed with so as to prevent any leakage and withstand the tensions/stresses developed during spinning.8. An apparatus as claimed in claim 1 , ...

DEVICE FOR PRODUCING PLASTIC TUBES

An apparatus produces plastic tubes by extrusion with an extruder, a pipehead being attached to the extruder in production direction, having a base material with at least one mandrel and a sleeve, a melt channel between the mandrel and the sleeve, the melt channel shaped to aid flow in production direction at least at the mandrel's end and at the sleeve's end, the mandrel and sleeve being adjustable backwards and forward relatively to one another, the outer surface of the mandrel and/or the inner surface of the sleeve at least partially has a material that allows for a higher sliding quality than the base material. The outer and/or the inner surface (i) has a coating either unvaried, or whose sliding quality constantly improves, or whose sliding quality alternately improves and worsens, in the production direction, or (ii) is partially coated, or (iii) the mandrel and/or sleeve fronts are coated. 1. An apparatus for producing a plastic tube by extrusion with an extruder , the apparatus comprising:a pipehead, attached to the extruder in a production direction, comprising a base material, a mandrel, and a sleeve; anda melt channel, created between the mandrel and the sleeve, the melt channel being shaped to aid the flow in production direction at least at a mandrel end and at a sleeve end,wherein the mandrel and the sleeve are adjustable backwards and forward relatively to one another,wherein an outer mandrel surface and/or an inner sleeve surface at least partially comprises a material that allows for a higher sliding quality than the base material,wherein the outer mandrel surface and/or the inner sleeve surface comprises a coating that does not vary in the production direction, orwherein the outer mandrel surface and/or the inner sleeve surface comprises a coating whose sliding quality constantly improves in the production direction, orwherein the outer mandrel surface and/or the inner sleeve surface comprises a coating whose sliding quality alternately improves ...

MODULAR PIPE FORMATION APPARATUS

A modular plastic pipe formation apparatus, wherein at least two components of the pipe formation apparatus are disposed with respect to at least one or more respective modules. 136-. (canceled)37. A modular plastic pipe formation apparatus comprising:a plurality of modules, wherein each module is configured as a transport container having opposite ends and has at least one component of the pipe formation apparatus located therein;the plurality of components disposed within the modules are adjustable in position and/or angle; andlocks configured to lock adjacent modules when drawn together in close proximity with respective ends adjoining;wherein the plurality of modules are aligned for pipe formation when the modules are locked together and the modules are adjusted in position and/or angle.38. A modular plastic pipe formation apparatus according to claim 37 , wherein one of the plurality of modules comprises a plastic extruder claim 37 , a plastic raw material dryer and a die head.39. A modular plastic pipe formation apparatus according to claim 37 , wherein the plurality of modules are adapted to be coupled to each other in use claim 37 , and decoupled from each other during transportation of the apparatus.40. A modular plastic pipe formation apparatus according to claim 37 , wherein at least one of the plurality of modules comprises:a standardised shipping container or a standardised shipping container that has been modified for use in the apparatus; ora container or supporting framework for use in the apparatus and having at least some of the features of a standardised shipping container to facilitate its transportation.41. A modular plastic pipe formation apparatus according to claim 37 , further comprising an adjustment mechanism configured to closely position the adjacent modules prior to locking them together.42. A modular plastic pipe formation apparatus according to claim 37 , further comprising external supports for supporting respective modules claim 37 ...

EXTRUDED MULTI-LAYER MOLDED RUNNING BOARD

A vehicle running board includes opposing vertical walls extending along a length of a tubular structure and including a carbon-fiber component. Opposing horizontal walls extend between the opposing vertical walls and include a glass component. The opposing vertical and opposing horizontal walls form the tubular structure having a generally rectilinear cross section. A polymer outer covering extends over the opposing vertical and opposing horizontal walls. 1. A vehicle running board comprising:a vertical wall extending along a length of a tubular structure and including a carbon-fiber component;a horizontal wall extending from the vertical wall and including a glass component, the vertical and horizontal walls at least partially forming the tubular structure; anda polymer outer covering extending over the vertical and horizontal walls.2. The vehicle running board of claim 1 , further comprising:an interior vertical wall extending along the length of the tubular structure and including the carbon-fiber component.3. The vehicle running board of claim 2 , wherein the vertical wall and the interior vertical wall are made of carbon-fiber filled polypropylene claim 2 , and wherein the horizontal wall is made of glass-filled polypropylene.4. The vehicle running board of claim 1 , wherein the vertical and the horizontal walls are bi-extruded to form the tubular structure and the polymer outer covering is co-extruded with the tubular structure to be disposed over an exterior surface of the tubular structure.5. The vehicle running board of claim 2 , wherein the vertical wall claim 2 , the interior vertical wall claim 2 , the horizontal wall and the polymer outer covering are tri-extruded to simultaneously form the tubular structure having a consistent outer surface.6. The vehicle running board of claim 1 , wherein the horizontal wall defines an upper horizontal wall claim 1 , and wherein an opposing lower horizontal wall includes a contoured reinforcing structure defined ...

MICROLAYER COEXTRUSION OF ELECTRICAL END PRODUCTS

A method and system for extruding multiple laminated flow streams using microlayer extrusion, and in particular to creating and forming products with electrical properties that are formed from layers and particles with dimensions in the micro to nanometer range. 1. An extruded thin layer polymer product comprising one or more layers possessing electrical properties.2. The product according to wherein said one or more layers are milli claim 1 , micro or nano size claim 1 , wherein said one or more layers contain nanoparticle electrical conducting materials.3. The product according to wherein said one or more electrical conducting layers are layered between nonconducting layers.4. The product according to wherein said product is resistant to Electro-Static Discharges (ESD) claim 3 , Electromagnetic Pulse (EMP) claim 3 , High Power Microwave (HPM) attacks claim 3 , and Electromagnetic Interference (EMI).5. The product according to claim 2 , wherein said product is a superconducting tape.6. The product according to claim 2 , wherein said product is a battery.7. The product according to claim 6 , wherein said battery is a lithium ion battery.8. The product according to wherein said product comprises layers with pores adjacent to conducting layers.9. The product according to claim 2 , wherein at least one layer containing a conducting material is between 20 nm to 100 μm.10. The product according to claim 2 , wherein at least one layer containing a conducting material is between 20 to 500 nm.11. The product according to claim 2 , wherein at least one layer containing a conducting material is between 50 to 250 nm.12. A method of preparing multilayer electrical conducting extrusions claim 2 , comprising: receiving a flow of extrudible material in an extrusion system and constructing a series of ribbon shaped flow streams wherein at least one of the streams comprises conducting particles; subjecting the ribbon shaped flow streams to multiple sequences of stages claim 2 , ...

COMPOSITE HOLLOW FIBER MEMBRANES USEFUL FOR CO2 REMOVAL FROM NATURAL GAS

Disclosed herein is a composite hollow fiber polymer membrane including a porous core layer and a selective sheath layer. The porous core layer includes a polyamide-imide polymer, or a polyetherimide polymer, and the selective sheath layer includes a polyimide polymer, which is prepared from monomers A, B, and C. The monomer A is a dianhydride of the formula 2. The composite hollow fiber polymer membrane according to claim 1 , wherein the polyamide-imide polymer and the polyimide polymer form a homogeneous blend.3. The composite hollow fiber polymer membrane according to claim 1 , wherein A is 4 claim 1 ,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA).4. The composite hollow fiber polymer membrane according to claim 1 , wherein B is 2 claim 1 ,4 claim 1 ,6-trimethyl-m-phenylenediamine (DAM).5. The composite hollow fiber polymer membrane according to claim 1 , wherein C is 3 claim 1 ,5-diaminobenzoic acid (DABA).6. The composite hollow fiber polymer membrane according to claim 1 , wherein A is 6FDA claim 1 , B is DAM claim 1 , and C is DABA.8. The composite hollow fiber polymer membrane according to claim 1 , wherein the membrane is a dual layer hollow fiber membrane having a selective outer layer comprising about 1/10by volume of the polyimide polymer that would be employed in a dual layer hollow fiber membrane comprising both a porous substructure layer and selective outer layer made of polyimide polymer.9. The composite hollow fiber polymer membrane according to claim 1 , wherein the polyamide-imide polymer of the core layer is of the structure of .12. The process according to claim 11 , wherein the at least one impurity is selected from the group consisting of CO claim 11 , HO claim 11 , HS claim 11 , and mixtures thereof.13. The process according to claim 11 , wherein the at least one impurity comprises COand HO.14. The process according to claim 11 , wherein the impurity-depleted product gas stream comprises ≦2 mol % CO.16. The composite hollow fiber ...

EMITTER LOCATING SYSTEM AND RELATED METHODS

Various systems, methods and apparatus for locating emitters embedded in tubing are disclosed herein, as well as forming outlets in said tubing and confirming the placement accuracy of such outlets. In one form, an emitter locator is disclosed having: a housing defining a generally enclosed space and having an inlet located in a first side of the housing and an outlet located in a second side of the housing positioned opposite the inlet; a cutter positioned within the generally enclosed space between the inlet and outlet; a first optical instrument located proximate the inlet; a second optical instrument located proximate the outlet; and a controller connected to the cutter and first and second optical instruments, the controller configured to detect a tubing target area desired for placement of an outlet opening in tubing that passes through the inlet and cut the tubing target area to form the outlet opening therein. 1. An emitter locator for detecting the presence of an emitter embedded inside tubing , the locator comprising:a housing defining a generally enclosed space and having an inlet located in a first side of the housing and an outlet located in a second side of the housing positioned opposite the inlet;a cutter positioned within the generally enclosed space between the inlet and outlet;a first optical instrument located proximate the inlet anda controller connected to the cutter and first and second optical instruments, the controller configured to detect a tubing target area desired for placement of an outlet opening in tubing that passes through the inlet and cut the tubing target area to form the outlet opening therein.2. The emitter locator of wherein the first optical instrument is a thermal imager and the controller is configured to view the tubing target area with the thermal imager.3. The emitter locator of further including a second optical instrument located proximate the outlet for confirming placement accuracy of the outlet opening within the ...

Head and system for continuously manufacturing composite hollow structure

A head is disclosed for use with a continuous manufacturing system. The head may have a housing configured to receive a matrix and a continuous fiber, and a diverter located at an end of the housing. The diverter may be configured to divert radially outward a matrix-coated fiber. The head may also include a cutoff having an edge configured to press the matrix-coated fiber against the diverter.

HIGH PRESSURE GAS HOSE AND METHOD OF MAKING SAME

A high pressure gas hose and related methods of transporting high pressure gases in which gas permeability throughout a length of the high pressure gas hose is reduced. The high pressure gas hose can have an outer tube and the inner tube. The outer tube can be formed of a resistant polymer material such as PTFE. The inner tube can include a matrix formed of PTFE and graphene nano-platelets or nano-particles. The graphene nano-platelets define a tortuous path within the matrix such that gas permeability is reduced through an inner tube wall thickness. Gas permeability throughout a length of the high pressure gas hose can be less that about 20 ml/m/hr. The high pressure gas hose can find practical application in natural gas applications, automotive applications, cooling and refrigeration applications and other applications in which it is desired to have low gas permeability in high pressure applications.

Processing Technology for Making Seepage Irrigation Pipe with Alternate Effluent Section and Non-Effluent Section

The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

ANNULAR DIE AND METHOD FOR EXTRUSION

The invention relates to an annular die () on an extrusion head for producing tubular or sheet-like preforms with an arcuate die gap and with a melt channel () delimited by a mandrel () and a die body (), the cross-sectional profile of the melt channel () being variable by way of adjusting elements, the annular die according to the invention being distinguished by the fact that the outer circumference of the melt channel () is at least partially delimited directly by at least one radially adjustable slide (), that the slide () is formed by a number of segments that can be adjusted together from at least one first position into at least one second position, and that the segments in each position form a respectively closed arc portion of the delimitation of the melt channel (), the radius of the arc portion being different according to the position of the segments. 1. An annular die on an extrusion head for producing tubular or sheet-like preforms with an arcuate die gap and with a melt channel delimited by a mandrel and a die body , the cross-sectional profile of the melt channel being variable by way of adjusting elements , characterized in that the circumference of the melt channel is at least partially delimited directly by at least one radially adjustable slide , in that the slide is formed by a number of segments that can be adjusted together from at least one first position into at least one second position , and in that the segments in each position form a respectively closed arc portion of the delimitation of the melt channel , the radius of the arc portion being different according to the position of the segments.2. The annular die as claimed in claim 1 , characterized in that the segments of the slide are kinematically positively coupled.3. The annular die as claimed in claim 1 , characterized in that the slide comprises a main slide segment and two secondary slide segments claim 1 , which together form a circular arc segment delimiting the melt channel.4. ...

Method and Extrusion Line for Producing Peroxide-cross-linked Polyethylene Pipes

A method and extrusion line for producing peroxide-cross-linked polyethylene pipes in an extrusion line having an extruder, a cross-linking furnace and a flue. The extruded tube is subjected to a stretching process, and the cross-linking furnace has a first heating section that extends from its inlet to an actuated deflection roller and a second heating section from the deflection roller to its outlet. The stretching process in the first heating section and the stretching process in the second heating section are monitored and regulated in such a manner that the necessary stretching of the pipe takes place primarily in the first heating section, and the stretching of the pipe in the second heating section is subjected to zero adjustment. In this case, the height of the deflection roller(s) of the cross-linking furnace and the angle of the heating sections to the horizontal plane can be height-adjustable. 1. An extrusion line for the production of peroxide cross-linked polyethylene pipes , comprising:{'b': 5', '13', '7', '7, 'a cross-linking oven (, ) having an actuated deflection roller (), wherein said cross-linking oven furthermore has a first heating section (A) that extends from an inlet to said deflection roller () and a second heating section (B) that extends from said deflection roller to an outlet; and'}{'b': '7', 'means for adjusting a height of said deflection roller () and an angle of said first and second heating sections (A, B) relative to a horizontal plane.'}267. An extrusion line according to claim , which comprises further means for linking the adjustments of the height of said deflection roller () and the angle of said first and second heating sections (A , B). The present application is a divisional application of co-pending U.S. application Ser. No. 13/012,685, filed Jan. 24, 2011.The present invention relates to a method of producing peroxide-cross-linked or polymerized polyethylene pipes in an extrusion line that includes an extruder, a cross- ...

POST CONSUMER RECYCLED RESIN COMPOSITION AND MANUFACTURE OF TUBES THEREFROM

The present disclosure relates to a post consumer recycled polymer composition comprising: 80% to 95% (w/w) of a post consumer recycled resin; and 5% to 20% (w/w) of at least one additive. The present disclosure further relates to a laminate comprising: an outer layer of a post consumer recycled polymer composition; a middle layer of post consumer recycled polymer composition; and an inner layer of virgin resins. The present disclosure also relates to a process for manufacturing tubes comprising: extrusion of post consumer recycled polymer composition comprising 80% to 95% (w/w) of an post consumer recycled resin; and 5% to 20% (w/w) of at least one additive, through a circular slit to form a long cylindrical hollow pipe; slicing the long cylindrical hollow pipe to form tube sleeves; forming tube shoulder and neck; and attaching the tube shoulder and the neck to the tube sleeves to obtain a tube. 1. A post consumer recycled polymer composition comprising:80% to 95% (w/w) of a post consumer recycled resin; and5% to 20% (w/w) of at least one adhesion additive.2. The composition as claimed in claim 1 , wherein the post consumer recycled resin is a High Density Polyethylene (HDPE) resin.3. The composition as claimed in claim 1 , wherein the adhesion additive is selected from an ethylene alpha-olefins copolymer claim 1 , or a metallocene linear Polyethylene additive or mixture thereof.4. A post consumer recycled polymer composition comprising:80% to 95% (w/w) of a post consumer recycled resin; and5% to 20% (w/w) of ethylene alpha-olefins copolymer.5. The composition as claimed in further comprising:1% to 2% (w/w) of an antioxidant additive, or 2% to 8% (w/w) a colorant masterbatch, or 2% to 8% (w/w) of a virgin HDPE; or mixture thereof.6. A post consumer recycled polymer composition comprising:90% to 95% (w/w) of an HDPE post consumer recycled resin;5% to 8% (w/w) of at least one adhesion additive;1% to 2% (w/w) of an antioxidant additive; and2% to 6% (w/w) color master ...

HEAD AND SYSTEM FOR CONTINUOUSLY MANUFACTURING COMPOSITE HOLLOW STRUCTURE

A head is disclosed for use with a manufacturing system. The head may have a housing configured to discharge a tubular structure reinforced with at least one continuous fiber and having a three-dimensional trajectory, and a cure enhancer operatively connected to the housing and configured to cure a liquid matrix in the tubular structure during discharge. The head may also have a nozzle configured to discharge a fill material into the tubular structure, and a wand extending from the housing to the nozzle. 1. A method of continuously manufacturing a composite structure , comprising:continuously coating fibers with a matrix;diverting the fibers radially outward away from a non-fiber axis to form a tubular structure;creating a three-dimensional trajectory within the tubular structure;curing the tubular structure from inside of the tubular structure; anddischarging a fill material into the tubular structure.2. The method of claim 1 , wherein curing the tubular structure includes curing the tubular structure at a location upstream of where the fill material is discharged into the tubular structure.3. The method of claim 2 , further including curing the fill material.4. The method of claim 1 , further including externally shielding the tubular structure from an environment.5. The method of claim 4 , further including internally shielding the tubular structure from the environment.6. The method of claim 1 , wherein discharging the fill material into the tubular structure includes directing the fill material from a center of the tubular structure radially outward onto an inner wall of the tubular structure to form an annular layer inside the tubular structure.7. The method of claim 1 , wherein discharging the fill material into the tubular structure includes directing the fill material from a center of the tubular structure radially outward onto an inner wall of the tubular structure to form a plurality of axially oriented ridges inside the tubular structure.8. The method of ...

DEVICE WITH CO-EXTRUDED BODY AND FLEXIBLE INNER BLADDER AND RELATED APPARATUS AND METHOD

A device comprises a first portion including a first polymer, and a second portion that is relatively flexible in comparison to the first portion and includes a second polymer that is substantially not bondable to the first polymer. A chamber of the device is hermetically sealable with respect to ambient atmosphere and is defined by (i) an interior of the second portion, and/or (ii) a space formed between the first and second portions. A third portion of the device includes a third polymer that is bondable to the first and second polymers and fixedly secures the first and second portions to each other. 1. A device comprising:a first portion including a first polymer;a second portion that is relatively flexible in comparison to the first portion including a second polymer that is substantially not bondable to the first polymer, and a chamber that is hermetically sealable with respect to ambient atmosphere and defined by at least one of (i) an interior of the second portion, and (ii) a space formed between the first and second portions; anda third portion including a third polymer that is bondable to the first and second polymers and that fixedly secures the first and second portions to each other.2. (canceled)3. (canceled)4. A device as defined in claim 1 , wherein the first polymer includes first and second monomers claim 1 , the second polymer includes second and third monomers that are different than the first and second monomers and substantially not bondable thereto claim 1 , and the third polymer includes fourth and fifth monomers claim 1 , wherein the fourth monomer is at least substantially similar and bondable to at least one of the first and second monomers for bonding the third polymer to the first polymer claim 1 , and the fifth monomer is at least substantially similar and bondable to at least one of the third and fourth monomers for bonding the third polymer to the second polymer.5. A device as defined in claim 4 , wherein the fourth monomer is the same ...

CONCRETE DOWEL PLACEMENT SYSTEM AND METHOD OF MAKING THE SAME

A concrete dowel placement system and methods for making the same. The system allows for accurate and easy substantially-parallel or parallel placement of slip dowels within sections of concrete so that adjacent sections of concrete may be allowed to undergo thermal expansion and contraction while remaining in a common plane without cracking or faulting. The system includes a coupler and a sheath. The sheath is configured to be slidably extensible over the coupler and may be held to the coupler by friction. An outer surface of the sheath may be textured. Additionally, a method of constructing the concrete dowel placement system includes extruding material to form two tubes of different sizes. The tubes are then attached to each other, then material is extruded or injection molded to form a sheath. Alternatively, construction may include extruding material to form a tube, then removing some of the material from the tube in order to form a coupler. 1. A method of constructing a concrete dowel placement system , the method comprising: extruding a polymer to form a first tubular element;', 'extruding a polymer to form a second tubular element, the second tubular element having a dimensional size different from a dimensional size of the first tubular element;', 'attaching an end portion of the second tubular element to an end portion of the first tubular element; and, 'constructing a coupler, the constructing comprisingextruding a polymer to form an elongated, tubular, dowel-receiving sheath, the sheath having an outer surface, at least one interior opening extending along the entire length of the sheath and the sheath being configured to be slidably extensible over the coupler to frictionally engage one of the first tubular element and the second tubular element;texturing the outer surface of the sheath, thereby increasing the surface area of the outer surface.2. The method of claim 1 , further comprising the step of attaching an end cap to an end portion of the sheath ...

METHODS FOR CRIMPING A POLYMERIC STENT ONTO A DELIVERY BALLOON

A medical device-includes a polymer stent crimped to a catheter having an expansion balloon. The stent is crimped to the balloon by a process that includes heating the stent to a temperature below the polymer's glass transition temperature to improve stent retention without adversely affecting the mechanical characteristics of the stent when later deployed to support a body lumen. 120-. (canceled)21. A method for making a medical device , comprising:providing a tube from a polymer comprising poly(L-lactide), the polymer having a glass transition temperature (Tg); ring structures, each ring structure forming a plurality of diamond-shaped cells,', 'linking struts that connect adjacent ring structures, and', 'an outer diameter; and, 'forming a scaffolding from the tube, the scaffolding comprising raising the temperature of the scaffolding to an elevated temperature between Tg and 15 degrees below Tg,', "reducing the crimp head to a crimped diameter to reduce the scaffolding's outer diameter from a first size to a second size,", 'holding the crimp head at the crimped diameter for a dwell period, and', 'reducing elastic recoil in the scaffolding including placing the scaffolding within a sheath., 'using a crimping device having a crimp head, crimping the scaffolding to a balloon of a balloon catheter, the crimping including the steps of22. The method of claim 21 , wherein the dwell period is greater than 10 seconds.23. The method of claim 21 , wherein the scaffolding temperature is raised to Tg.24. The method of claim 21 , wherein the balloon is inflated during crimping.25. The method of claim 21 , wherein the elevated temperature is between 40° C. and 55° C.26. The method of claim 21 , wherein the balloon has an inflated diameter and the tube has an outer diameter that is equal to or greater than the inflated diameter.27. The method of claim 26 , wherein the balloon has an inflated diameter that is at least 2.5 times greater than the crimped diameter.28. The method of ...

MATHEMATICAL LEARNING RODS

A method of manufacturing a learning rod educational toy set comprising a plurality of hollow rod elements, each rod element having an indication of its length on an outer surface thereof, such as by a number or a symbol indicating total length in increments, such as inches or centimetres, each rod element being releasably connectable to another such rod element by a respective coupling element, the coupling element including a flanged region having an outer perimeter contiguous with the outer perimeter of the or each rod section, the method including the steps of, in any convenient order, extruding or otherwise forming a continuous tube of sectional shape corresponding to the required sectional shape of the rod elements, cutting the continuous tube into discrete lengths corresponding to chosen increments, such as inches or centimetres, providing an indication of the length of each rod element on an externally visible surface thereof, forming flanged coupling elements, each for insertion into an end of a respective rod element tube for connecting selected pairs of rod elements end-on-end to form a continuous rod, the flange of each coupling element being of a colour visibly distinct from the colour of the rod elements, thereby to provide a visible indication of the number of rod elements in a learning rod formed therewith. The invention also extends to a learning rod set made in accordance with the method. 1. A method of manufacturing a learning rod educational toy set comprising a plurality of hollow rod elements , each rod element having an indication of its length on an outer surface thereof , such as by a number or a symbol indicating total length in increments , such as inches or centimetres , each rod element being releasably connectable to another such rod element by a respective coupling element , the coupling element including a flanged region having an outer perimeter contiguous with the outer perimeter of the or each rod element , the method including the ...

COEXTRUSION PROCESSES AND PRODUCTS PRODUCED THEREROM

A method of coextruding polymeric materials into multiple layers of desired thickness to form a tubular workpiece. The method includes conveying a first polymeric material through a main extruder and a second polymeric material through a coextruder. The second polymeric material has dispersed therein an amount of electrically conductive particles effective to impart electrical conductivity to the tubular workpiece. The method further includes simultaneously extruding the first polymeric material and the second polymeric material through a coextrusion die to form the tubular workpiece. The tubular workpiece is extruded in the form of one or more outer layers having the first polymeric material and one or more inner layers comprising the second polymeric material. A tubular workpiece prepared by the method of coextruding polymeric materials into multiple layers of desired thickness. A system for coextruding polymeric materials into multiple layers of desired thickness to form a tubular workpiece is also provided. 1. A method of coextruding polymeric materials into multiple layers of desired thickness to form a tubular workpiece , the method comprising:providing a coextrusion apparatus that comprises a main extruder, a coextruder and a coextrusion die, the main extruder having a stationary barrel and a rotating screw, the coextruder having a stationary barrel and a rotating screw, wherein the main extruder and the coextruder are operatively connected to the coextrusion die, wherein the coextrusion apparatus also comprises one or more vacuum cooling tanks that are operatively connected to the coextrusion die, one or more cooling/warming tanks that are operatively connected to the one or more vacuum cooling tanks, and a puller/cutter that is operatively connected to the one or more cooling/warming tanks;conveying a first polymeric material through the main extruder;conveying a second polymeric material through the coextruder, the second polymeric material having ...

HEAD AND SYSTEM FOR CONTINUOUSLY MANUFACTURING COMPOSITE HOLLOW STRUCTURE

A head is disclosed for use with a manufacturing system. The head may have a housing that discharges a tubular structure, and a cure enhancer connected to the housing and selectively activated to cure the tubular structure during discharge from the housing. The head may also have a nozzle that discharges a fill material into the cured tubular structure. 1. A head for a manufacturing system , comprising:a housing that discharges a tubular structure;a cure enhancer connected to the housing and selectively activated to cure the tubular structure during discharge from the housing; anda nozzle that discharges a fill material into the cured tubular structure.2. The head of claim 1 , wherein:the tubular structure includes matrix-wetted continuous fibers; andthe cure enhancer is configured to cure the matrix.3. The head of claim 1 , wherein the nozzle discharges the fill material as the cured tubular structure passes over the nozzle.4. The head off claim 1 , further including a fill material supply wand extending from the housing to the nozzle.5. The head of claim 1 , wherein the cure enhancer is located inside of the tubular structure during discharge of the tubular structure.6. The head of claim 5 , wherein the cure enhancer is located inside of the housing and upstream of the nozzle relative to a discharge direction of the tubular structure.7. The head of claim 3 , further including a second cure enhancer that is selectively activated to cure the fill material.8. The head of claim 7 , wherein the second cure enhancer is located at an end of the nozzle opposite the housing.9. The head of claim 1 , further including a diverter that diverts the tubular structure radially outward around the nozzle.10. The head of claim 9 , wherein the diverter is located at least partially inside the housing.11. The head of claim 9 , wherein the cure enhancer is located at least partially inside the diverter.12. The head of claim 1 , further including a drive that rotates the nozzle during ...

LOW-SAG POLYETHYLENE PIPES AND METHODS THEREOF

The present disclosure relates to pipes comprising bimodal high molecular weight high density polyethylene which has been extruded in the presence of one or more organic peroxides that are present in an amount ranging from 30 ppm to 200 ppm. The pipe has an improved long-term hydrostatic strength. Also provided are methods for preparing pipes having these characteristics. 1. An extruded pipe comprising bimodal high molecular weight high density polyethylene{'sup': 3', '3, 'claim-text': wherein the pipe was extruded in the presence of about 30 ppm to about 200 ppm of one or more organic peroxides,', 'wherein the one or more organic peroxides has a half-life of 1 hour at a temperature in the range of about 125° C. to about 145° C., and, 'having a density ranging from about 0.9460 g/cmto about 0.9520 g/cm,'}{'sub': F', 'R', 'F', 'R, 'the extruded pipe has a long-term hydrostatic strength t/tratio of about 1.5 or greater when determined at 23° C. and 12 MPa and/or at 23° C. and 11.5 MPa, where tis the time-to-failure of the pipe and tis the time-to-failure of a comparative pipe which has not been extruded with organic peroxide.'}2. The extruded pipe of claim 1 , wherein the organic peroxide is present in an amount ranging from about 40 ppm to about 150 ppm.3. The extruded pipe of claim 1 , wherein the bimodal high density polyethylene has a porous polypropylene random copolymer.4. The extruded pipe of claim 1 , wherein the long-term hydrostatic strength t/tratio is about 2.0 or greater when determined at 23° C. and 12 MPa and/or at 23° C. and 11.5 MPa.5. The extruded pipe of claim 1 , which has one or more of the following properties:a sag value of about 20 or less;a PENT result of about 500 hours or more; and{'sup': '2', 'a Charpy impact energy of about 10 kJ/mor more.'}6. The extruded pipe of claim 5 , which has one or more of the following properties:{'sup': 3', '3, 'a density in the range of about 0.9470 g/cmto about 0.9510 g/cm;'}a sag value of about 15 or less;a ...

Wear-heat-resistant anti-bacterial anti-fouling steel wire framed pipe and manufacturing method thereof

A wear-heat-resistant anti-bacterial anti-fouling steel wire framed pipe and a manufacturing method thereof are provided. The steel wire framed pipe includes: an anti-bacterial anti-fouling inner layer, an enhancement layer and a wear-heat-resistant outer layer from inside to outside in turn, wherein: the anti-bacterial anti-fouling inner layer is made from antifouling and antibacterial composite modified polyethylene; the wear-heat-resistant outer layer is made from wear-resistant cross-linked modified PE-RT; the enhancement layer includes an interlayer and two steel wire gauze layers respectively coating on an inner surface and an outer surface of the interlayer, and the interlayer is respectively bonded with the anti-bacterial anti-fouling inner layer and the wear-heat-resistant outer layer via hot-melt adhesive. The steel wire framed pipe provided by the present invention has high structural strength, wear-resistance, heat-resistance, and anti-bacterial and anti-fouling properties. 1123. A wear-heat-resistant anti-bacterial anti-fouling steel wire framed pipe , comprising: an anti-bacterial anti-fouling inner layer () , an enhancement layer () and a wear-heat-resistant outer layer () from inside to outside in turn , wherein:{'b': 1', '3', '2', '21', '22', '21', '1', '3, 'the anti-bacterial anti-fouling inner layer () is made from antifouling and antibacterial composite modified polyethylene; the wear-heat-resistant outer layer () is made from wear-resistant cross-linked modified PE-RT; the enhancement layer () comprises an interlayer () and two steel wire gauze layers () respectively coating on an inner surface and an outer surface of the interlayer, and the interlayer () is respectively bonded with the anti-bacterial anti-fouling inner layer () and the wear-heat-resistant outer layer () via hot-melt adhesive;'}{'b': '21', 'sub': '2', 'the interlayer () is made from a mixing material which comprises PE-RT, silane coupling agent, and SiOwith a weight ratio of (50 ...

MOLDED BODY AND MANUFACTURING METHOD THEREOF

A molded article comprising a fuel-barrier layer formed of a resin composition comprising a polyamide resin (A) as a continuous phase and a resin (B) as a disperse phase, wherein (A) is a polyamide resin (A1) comprising at least one of a constituent unit derived from a lactam having 10 to 12 carbon atoms and a constituent unit derived from an aminocarboxylic acid having 10 to 12 carbon atoms, or a polyamide resin (A2) comprising a constituent unit derived from an aliphatic diamine having 6 to 12 carbon atoms and a constituent unit derived from an aliphatic dicarboxylic acid having 10 to 12 carbon atoms, the (B) is a resin selected from a semi-aromatic polyamide resin, the ratio by volume of (A)/(B) is 95/5 to 51/49, and the mean disperse particle diameter of (B) is 150 nm or more. 1. A molded article comprising a fuel-barrier layer formed of a resin composition that comprises a polyamide resin (A) as a continuous phase and a resin (B) as a disperse phase , wherein:the polyamide resin (A) is a polyamide resin (A1) comprising at least one of a constituent unit derived from a lactam having 10 to 12 carbon atoms and a constituent unit derived from an aminocarboxylic acid having 10 to 12 carbon atoms, or a polyamide resin (A2) comprising a constituent unit derived from an aliphatic diamine having 6 to 12 carbon atoms and a constituent unit derived from an aliphatic dicarboxylic acid having 10 to 12 carbon atoms,the resin (B) is a resin selected from a semi-aromatic polyamide resin,the ratio by volume of polyamide resin (A)/resin (B) is 95/5 to 51/49, andthe mean disperse particle diameter of the resin (B) is 150 nm or more.2. The molded article according to claim 1 , wherein the semi-aromatic polyamide resin is:a polyamide resin (B1) in which 70 mol % or more of a diamine constituent unit is derived from metaxylylenediamine and 70 mol % or more of a dicarboxylic acid constituent unit is derived from an α,ω-linear aliphatic dicarboxylic acid having 4 to 8 carbon atoms, ...

METHODS FOR MANUFACTURING METAL-RESIN COMPOSITE PIPE THAT CAN BE EASILY WOUND INTO RING SHAPE

The present invention may manufacture a composite pipe by forming an adhesive layer and a resin layer on an outer surface of a metal pipe, and although the composite pipe is wound in a ring shape after the composite pipe is manufactured, a circular cross sectional shape may be maintained without deformation, and after the composite pipe is straightened for the purpose of construction, separation or buckling may be prevented, resulting in excellent transportability and constructability of a product. 1. A method of manufacturing a three-layer metal resin composite pipe , the method comprising the steps of:{'b': '30', '(a) manufacturing a metal pipe using thin plate stainless steel; and,'}{'b': 30', '40', '30', '50', '40, '(b) coating the metal pipe by forming an adhesive layer on an outer surface of the metal pipe and by forming a resin layer by extruding a polyethylene resin on the adhesive layer ,'}{'b': 30', '40', '50, 'wherein the metal pipe forms the first layer, the adhesive layer forms the second layer and, the resin layer forms the third layer,'}{'b': 30', '50, 'wherein a thickness (p) of the metal pipe is within a range of 5% to 20% of a thickness q of the resin layer ,'}{'b': '30', 'wherein while the metal resin composite pipe is manufactured as a straight pipe, the metal resin composite pipe is adapted to be wound in a ring shape and to go back to a straight shape without deformation to the circular cross section of the metal pipe and the metal resin composite pipe.'}2. The method of claim 1 , wherein after the step (b) claim 1 , the method comprises winding the composite pipe in a ring shape claim 1 , and a diameter (u) of the ring shape is greater 20 times to 50 times than the outer diameter (G) of the composite pipe.330200. The method of claim 2 , wherein the step (b) is performed by extruding the adhesive resin and the polyethylene resin in a sequential order while the metal pipe passes through a coating mold unit claim 2 ,{'b': 200', '210', '230', '210 ...

ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, TRANSFER ROLLER, PRODUCTION METHOD FOR THE TRANSFER ROLLER, AND IMAGE FORMING APPARATUS

An electrically conductive rubber composition is provided, which is usable for production of a transfer roller of a highly flexible foam satisfying requirements for cost reduction and weight reduction and having smaller foam cell diameters and, hence, ensuring higher-quality image formation with smaller environment-dependent variations in roller resistance. A transfer roller produced from the electrically conductive rubber composition, a production method for the transfer roller, and an image forming apparatus including the transfer roller are also provided. The electrically conductive rubber composition contains a rubber component including SBR and/or BR, EPDM and epichlorohydrin rubber, a crosslinking component, and 4 to 6 parts by mass of a foaming agent and 1.5 to 2.7 parts by mass of a foaming assisting agent based on 100 parts by mass of the rubber component. The transfer roller () is produced by extruding the electrically conductive rubber composition into a tubular body and performing an in-can vulcanization process on the tubular body. The image forming apparatus incorporates the transfer roller. 1. An electrically conductive rubber composition for in-can vulcanization , the rubber composition comprising:a rubber component including ethylene propylene diene rubber, epichlorohydrin rubber and at least one rubber selected from the group consisting of styrene butadiene rubber and butadiene rubber;a crosslinking component for crosslinking the rubber component;a foaming agent thermally decomposable to generate gas, the foaming agent being present in a proportion of not less than 4 parts by mass and not greater than 6 parts by mass based on 100 parts by mass of the overall rubber component; anda foaming assisting agent which accelerates decomposition of the foaming agent, the foaming assisting agent being present in a proportion of not less than 1.5 parts by mass and not greater than 2.7 parts by mass based on 100 parts by mass of the overall rubber component.2. ...

RODENT, WORM AND INSECT RESISTANT IRRIGATION PIPE AND METHOD OF MANUFACTURE

An irrigation tube having outlets extending along the length of the tube in a spaced relationship and finely-divided silica or iron oxide particles dispersed in the tube thereby increasing a surface hardness of the tube to deter rodent, worm or insect damage, the silica particles further can include an odor repellant located within the particles. 1. An irrigation device comprising:a tube having an inner portion and an outer portion;a plurality of outlets extending through the tube in a spaced relationship along a length of the tube; andfinely-divided silica or iron oxide particles dispersed in at least the outer portion of the tube thereby increasing a surface hardness of the tube to deter rodent, worm or insect damage.2. The device of wherein the silica or iron oxide particles are uniformly dispersed throughout the inner portion and the outer portion of the tube.3. The device of further comprising an odor repellant located within the finely-divided silica or iron oxide particles.4. The device of wherein the tube is a low-density polyethylene.5. The device of wherein the tube is a flexible polyvinylchloride (PVC).6. The device of wherein the tube is rubber.7. The device of further comprising a plurality of emitters positioned on an inside surface of the tube in a spaced relationship such that an emitter is positioned over an outlet.8. An electric cable comprising:at least one wire; anda plastic or rubber covering surrounding the wire having finely-divided silica or iron oxide particles dispersed in at least an outer portion of the covering thereby increasing a surface hardness of the covering to deter rodent, worm or insect damage.9. The cable of wherein the silica or iron oxide particles are uniformly dispersed throughout the covering.10. The cable of further comprising an odor repellant located within the finely-divided silica or iron oxide particles.11. The cable of wherein the covering is a low-density polyethylene.12. The cable of wherein the covering is a ...

EXTRUDED PET PARISON, CONTAINER, AND METHOD

An extruded PET parison includes a first extruded polymer comprising PET, and a second extruded polymer comprising PET. In embodiments, the first extruded polymer and the second extruded polymer are co-extruded, and the first extruded polymer has an intrinsic viscosity that is higher that the intrinsic viscosity of the second extruded polymer. A monolayer embodiment is also disclosed. In embodiments, a monolayer extruded PET container is comprised of bottle grade PET resin that has been solid stated and may have an IV from about 0.96 to about 1.4. 1. An extruded PET monolayer parison for forming an extrusion blow molded container , the extruded PET monolayer parison comprising:an extruded PET monolayer;wherein the extruded PET monolayer is in a solid state, the extruded PET monolayer has an intrinsic viscosity from about 0.96 to about 1.4; the extruded PET monolayer is devoid of chain extenders; and the extruded PET monolayer is not injection-stretch blow molded.2. The extruded PET monolayer parison of claim 1 , wherein the extruded PET monolayer has an intrinsic viscosity of about 1.1.3. The extruded PET monolayer parison of claim 1 , wherein the PET comprises bottle grade PET resin initially having an IV of from about 0.65 to about 0.87 that has been solid-stated to increase the IV of the PET resin.4. A container formed from the parison of claim 1 , wherein the container is extrusion blow molded from the extruded PET monolayer parison.5. The container of claim 4 , wherein the container is substantially free of striations and haze.6. The container of claim 4 , wherein the container claim 4 , in addition to being devoid of chain extenders claim 4 , is devoid of additives or modifiers used with chain extenders with PET resin.7. The container of claim 4 , wherein the container is devoid of chain extenders and is recyclable.8. An extruded PET parison comprising:a first extruded polymer comprising PET; anda second extruded polymer comprising PET;wherein the first and ...

INTEGRATED INSULATION EXTRUSION AND EXTRUSION TECHNOLOGY FOR WINDOW AND DOOR SYSTEMS

Extruded plastic profiles with integrated insulation, the method for extruding such products, and the windows and doors made with such plastic extrusions. The plastic extrusions may additionally include a low heat build-up capstock system comprising an acrylic cap and pigment system that is substantially IR transparent. The extruded plastic profiles with integrated insulation are recyclable using conventional plastic extrusion process and are fully weldable in conventional window and door manufacturing. 1. A window for use in a residential or commercial structure , comprising:a glass pack operatively installed in a window frame, where the window frame further comprises: a structural extrusion formed of a first thermoplastic resin suitable for use in the fenestration industry and which contains at least one hollow interior portion and which is of a constant profile and extends to an indefinite length, an integrated insulation formed of a second thermoplastic resin substantially filling at least one hollow portion of the structural extrusion, where the first thermoplastic resin and the second thermoplastic resin are compatible and recyclable together and where the structural extrusion and the integrated insulation are coextruded through an extrusion die.2. The window for use in a residential or commercial structure of claim 1 , wherein claim 1 , the second thermoplastic resin of the integrated insulation is foamed and further contains a plurality of air pockets running in the length of the extrudate.3. The window for use in a residential or commercial structure of claim 2 , wherein the thermoplastic resin and the second thermoplastic resin are comprised of polyvinyl chloride (PVC) resin.4. The window for use in a residential or commercial structure of claim 3 , further comprising a dark-colored capstock portion that is formed of a third thermoplastic resin that is significantly transmissive of solar infrared radiation and that covers at least a portion of the ...

Method of producing electrically conductive foam rubber roller, electrically conductive foam rubber roller, and image forming apparatus

The present invention provides a production method for producing an electrically conductive foam rubber roller which has a tubular body free from internal abnormal foaming and hence free from internal cracking after the foaming. The production method includes the steps of: continuously extruding a rubber composition into a tubular body ( 7 ); and passing the extruded tubular body ( 7 ) through a microwave crosslinking device ( 8 ) and then through a hot air crosslinking device ( 9 ) in an elongated state without cutting the tubular body. The rubber composition is extruded, foamed and crosslinked so that the tubular body has a thickness unevenness of not greater than 1.3 immediately after being passed through the hot air crosslinking device ( 9 ), the thickness unevenness being defined as a ratio T max /T min between a maximum radial thickness T max and a minimum radial thickness T min of the tubular body which are each measured in a cross section of the tubular body.

System and method for coating paint-roller cover fabric in-line with a manufacturing process

A paint roller manufacturing system includes a cover dispenser for continuously dispensing a windable width of paint roller cover fabric, a fabric supporting and advancing device for supporting the fabric and maintaining a width-wise dimension of the paint roller cover fabric as the fabric advances, a fabric coating applicator for applying a coating to the back side of the paint roller cover fabric while the fabric supporting and advancing device maintains the fabric in a width-wise dimension, and a compressing roller positioned downstream of the fabric coating applicator and configured to apply a compressive force on the coating after it has been applied to the back side of the paint roller cover fabric and while the fabric is supported by the fabric supporting and advancing device. In two-strip embodiments, first and second strip dispensers continuously dispense a first and second windable width of strip material. A guide system guides the first and second strip coming from the first and second strip dispensers to be wound about a mandrel and guides the coated paint roller cover fabric from the fabric supporting device to be wound about the first and second strips. An adhesive applicator is configured to apply adhesive on substantially all of the outer side of the first and second windable strips and positioned to apply adhesive to the outer side of the first and second windable strips upstream of a location where the coated paint roller cover fabric is wound about the first and second strips.

EXTRUDED REINFORCEMENTS

A polymeric insert formed by extruding a material including polyamide and a plurality of long fibers to form a column structure having a first profile. A method for making such an insert comprising passing a polymeric material in a substantially flowable state through a die, and substantially simultaneously passing a fiber through the die, wherein during the passing step the polymeric material has a relative viscosity of less than about 60 according to ASTM D789. 1. A method for making an insert , comprising the steps of:a. extruding a thermoplastic material to form a first column structure having a first profile;b. extruding a thermoplastic material to form a second column having a second profile that is different from the first profile;c. connecting the first column structure to the second column structure with a connector device so that the connector device is shaped to receive the first profile of the first column structure and the second profile of the second column structure.2. The method of claim 1 , wherein the one or more of the column structures include one or more openings formed in a wall of the one or more column structures.3. The method of claim 1 , wherein an activatable material is located onto at least a portion of one or more of the column structures.4. The method of claim 3 , wherein the activatable material is located on at least one internal wall of the one or more column structures.5. (canceled)6. The method of claim 3 , wherein the activatable material is activated by heat entering within the one or more column structures through the one or more openings formed in one or more walls of the one or more column structures.7. The method of claim 1 , wherein the thermoplastic material is selected from the group consisting of a homopolymer claim 1 , a copolymer claim 1 , a terpolymer or a blend of two or more polymers.8. (canceled)9. The method of claim 1 , wherein the insert has a specific gravity per ASTM D792 of from about 1 to about 1.3 claim 1 , ...

Fabrication Method For Micro-Tubular Solid Oxide Cells

A method for forming tubular solid oxide cells is described. The methods include co-extrusion of an electrode precursor and a sacrificial material to form a multi-layered precursor followed by phase inversion and sintering to remove the sacrificial layer and form an electrode substrate for use in a tubular solid oxide cell. Upon phase inversion and sintering of the precursor, a micro-channel array can be generated in the electrode that is generally perpendicular to the tube surface. The open pored micro-scale geometry of the porous electrode substrate can significantly reduce resistance for fuel/gas transport and increase effective surface area for electrochemical reactions. 1. A method for forming a tubular solid oxide cell comprising:co-extruding a first composition and a second composition to form a co-axial multi-layer precursor tube, the first composition including a solid oxide electrode material, a first polymeric binder, and a first solvent, the second composition comprising a solid particulate, a second polymeric binder, and a second solvent, the co-axial multi-layer precursor tube comprising a first electrode precursor layer and a sacrificial layer, the first electrode precursor layer comprising the first composition and the sacrificial layer comprising the second composition;contacting the co-axial multi-layer precursor tube with an anti-solvent, wherein following the contact a plurality of porous sub-layers are formed in the multi-layer precursor tube; andsintering the co-axial multi-layer tube to remove the sacrificial layer and form a sintered first electrode layer.2. The method of claim 1 , further comprising forming a precursor electrolyte layer on the first electrode precursor layer and sintering the precursor electrolyte layer.3. The method of claim 2 , wherein the precursor electrolyte layer is sintered in conjunction with the sintering of the co-axial multi-layer tube.4. The method of claim 3 , further comprising forming a precursor second ...

METAL-CONTAINING POLYMERIC REINFORCED PIPE, METHOD FOR MANUFACTURING SAME AND PIPELINE PRODUCED USING SAID PIPE

The polymeric pipes reinforced with a metal casing are used for transporting oil and gas, acids, alkali products, drinking water and industrial water, and also in the transportation of aggressive and neutral pulps. A metal-containing polymeric reinforced pipe includes a welded metal casing and a polymeric matrix having an amorphous-phase-based molecular structure. The metal-containing polymeric reinforced pipe is produced by extrusion moulding with simultaneous feeding of a polymer melt and the reinforcing metal casing into the mould cavity, followed by intensive cooling of the internal and external surfaces of the pipe being moulded. The invention increases the quality and endurance limit in the radial direction of the metal-containing polymeric reinforced pipe, productivity of the process for manufacturing the pipe, and also the strength and technological effectiveness of a pipeline constructed from the pipes produced. 159-. (canceled)60. A method for producing a metal-polymeric pipe by extrusion molding , comprising the steps of:feeding of a polymer melt from an extrusion head into a mold cavity formed by a cooled mandrel and an external mold barrel; andsimultaneous feeding of a welded metal reinforcing framework made with the use of at least one roll electrode,wherein, during welding of the reinforcing framework, the roll electrode is provided with pulses synchronized with time of mutual crossing of longitudinal reinforcement elements and transverse reinforcement elements as well as time of feeding a current pulse to the roll electrode,wherein the roll electrode forms a coil when making a framework, the roll electrode ensuring constant pressing of the transverse reinforcement elements to the longitudinal reinforcement elements by a force applied by a hydraulic actuator, andwherein, during extrusion molding, a heat-resistant non-metal bush is arranged before the mandrel, an internal surface and an external surface of the molded pipe being cooled so as to produce ...

APPARATUS AND METHOD FOR JOINING METAL SLEEVE ONTO A TUBE

A process, apparatus and a catheter and a flexi needle for medical applications formed by the process of selecting a tubular flexible member and a metal/ceramic cap member to be securely joined to the tubular member, placing the cap member in engaging relation with a holding member of a material joining device, securing the tubular member on a positioning member of the material joining device, positioning a distal end of the tubular member in engaging relation with an end of the cap member positioned in the holding member, and rotating the holding member and maintaining the tubular member in frictionally engaging relation with the cap member to melt or soften a predetermined portion of the distal end of the tubular member engaged with the cap member to integrally join a predetermined portion of the distal end of the tubular member within the cap member forming a joined composite member. 1. A material joining device , comprising:a base;a rotatable shaft assembly communicatively associated with the base, the rotatable shaft having a holding member rotatable with the shaft assembly, the holding member adapted to receive and hold a first member of a first material having a first glass transition temperature, a first melting point or a first softening point; anda moveable carriage communicatively associated with the base, the moveable carriage including a positioning member, the positioning member configured to position and hold a second member of a second material having a second glass transition temperature, a second melting point or a second softening point, the second glass transition temperature, the second melting point or the second softening point being less than the first glass transition temperature, the first melting point or the first softening point, respectively, and the moveable carriage configured to selectively move to position the second member in engaging relation with the first member,wherein rotation of the holding member and positioning of the ...

FLEXIBLE TUBULAR MOULDED BODY, SUCH AS BELLOWS, AND METHOD FOR THE MANUFACTURE THEREOF

The flexible tubular moulded body () comprises an unprofiled or profiled straight or bent shaped and a circumferential wall () provided with a corrugated profile (), which is formed from a strength support insert embedded in a thermoplastic material comprising cord surfaces running in the longitudinal direction of the moulded body as pressure support elements and fixing threads running transversely to the threads and holding these in position. 1. Method for producing a flexible tubular molded body , also arc , having a wall surface without or with a corrugated profile such as bellows , for air intake , turbo charging , cooling water and oil circuits and climatisation , for use in vehicle construction , ship building , mechanical engineering and aircraft construction , having at least one strength support insert which is embedded in a vulcanizable material , in an elastomer or in a thermoplastic , comprising the following steps:a) producing a surface structure by embedding a strength support insert or multiple superposed strength support inserts comprising threads or fibres or cord filaments running parallel to one another and at a distance from one another in the longitudinal direction to the axis of a cylindrical core tool having a corrugated profile on the outer side and/or with additional circumferential auxiliary threads wound in a helix manner and comprising fixing threads running transversely or diagonally to the threads or fibres or cord filaments running in the longitudinal direction and holding these in position in a vulcanizable material or in an elastomer or in a thermoplastic, where a section of the surface structure is applied to a cylindrical or hollow cylindrical core tool having a corrugated profile on the outer side and is deformed by means of a molding tool or press bandage, film, pressing rollers or profiles to form a bellows ora1) producing, in an extrusion process, a tubular and strand-like molded body comprising one or multiple superposed ...

Method for the manufacture of a tube

A method for the manufacture of a tube ( 10 ) containing a plastic material is proposed. The plastic material is melted in an extruder ( 3 ) so that a plastic melt is obtained, wherein the extruder ( 3 ) includes a passage ( 5 ). A conveyor ( 4 ) is arranged in the passage ( 5 ). The passage ( 5 ) has a first end ( 6 ), wherein the plastic material is introduced downstream of the first end ( 6 ) into the passage ( 5 ). The plastic material is conveyed through the passage ( 5, 35 ) and is converted into a plastic melt. The passage ( 5 ) has a second end ( 7 ), wherein the plastic melt is directed through the passage ( 5 ) into a forming tool ( 8 ). The tube ( 10 ) is produced by means of the forming tool ( 8 ), wherein the tube ( 10 ) leaves the passage ( 5 ) at the second end ( 7 ), wherein the tube ( 10 ) leaves the passage ( 5 ) on the second end ( 7 ). The plastic melt is guided through a cooling device ( 9 ), wherein the cooling device ( 9 ) comprises a cooling element ( 19 ) and a mixing element ( 40, 41 ), which is arranged in the interior of the passage ( 5, 35 ), wherein the plastic melt flows around the cooling element ( 19, 49 ) and the mixing element ( 40, 41 ), so that the plastic melt is cooled through the cooling element ( 19, 49 ) and the plastic melt is mixed by the mixing element ( 40, 41 ).

LAMINATE, MOLDED ARTICLE, AND IN-TANK TUBE

The invention provides a laminate having high elastic modulus retention even at high temperature and having moderate hardness. The laminate includes a layer (A) formed from a fluororesin and a layer (B) formed from a polyamide resin. The fluororesin is a copolymer containing a copolymerized unit of tetrafluoroethylene and a copolymerized unit of vinylidene fluoride, and has a storage elastic modulus (E′) of 60 to 400 MPa measured by dynamic mechanical analysis at 170° C. 1. A laminate comprising:a layer (A) formed from a fluororesin; anda layer (B) formed from a polyamide resin,the fluororesin being a copolymer containing a copolymerized unit of tetrafluoroethylene and a copolymerized unit of vinylidene fluoride, and having a storage elastic modulus (E′) of 60 to 400 MPa measured by dynamic mechanical analysis at 170° C.3. The laminate according to claim 1 ,wherein the polyamide resin has a melting point of 200° C. or higher.4. A molded article comprising the laminate according to .5. An in-tank tube comprising the laminate according to .6. The in-tank tube according to claim 5 ,wherein the in-tank tube is intended to be disposed inside a fuel tank.7. An in-tank tube comprising a layer (A′) formed from a fluororesin claim 5 ,the fluororesin being a copolymer containing a polymerized unit based on tetrafluoroethylene and a polymerized unit based on vinylidene fluoride, and having a storage elastic modulus (E′) of 60 to 400 MPa measured by dynamic mechanical analysis at 170° C.8. The in-tank tube according to claim 7 , consisting only of the fluororesin layer (A′).10. The in-tank tube according to claim 7 ,wherein the fluororesin has a tensile modulus at 150° C. that corresponds to 15% or more of the tensile modulus at room temperature.11. The in-tank tube according to claim 7 ,wherein the in-tank tube is intended to be disposed inside a fuel tank. The invention relates to laminates, molded articles, and in-tank tubes.Common fuel piping systems of automobiles have a ...

Seal device for a negative pressure calibrating unit in an extrusion line

The present invention relates to a seal device for a negative pressure calibrating unit in a extrusion line for producing profiled plastic sections, in particular pipes whereby the inner face of a seal rests against the circumference of the extruded profiled section in a formfitting manner and the seal is radially supported on the profiled section in order to apply a sealing force. It is the object of the invention to provide another similar device which is very easily constructed and can be produced inexpensively. This task is solved in that the seal is a porous and elastic foam body (13), the surfaces (17, 19) of that are exposed to the atmosphere are coated with an air-tight coating (21).

Cylindrical extruding die and method for producing seamless tube

A method for producing an electrically conductive seamless tube includes (1) preparing an electrically conductive resin composition containing a thermoplastic resin and an electrically conductive filler, (2) preparing a cylindrical extruding die including a cylindrical slit, at least one circumferential distribution channel communicating with the slit and distributing the resin composition that is plasticized in a circumferential direction of the slit, and at least one lead-in path that leads the plasticized resin composition into the circumferential distribution channel, the lead-in path containing a line mixer; (3) introducing the plasticized resin composition into the lead-in path toward the circumferential distribution channel; (4) introducing the plasticized resin composition flowing through the lead-in path into the circumferential distribution channel toward the slit; and (5) introducing the resin composition flowing through the circumferential distribution channel into the slit and extruding the resin composition from an outlet of the slit into a cylindrical shape.

Installations For Manufacturing Biaxially Oriented Tubing And The Tubing Itself

The production of a biaxially oriented tube from thermoplastic material, wherein a tube in preform condition is extruded from thermoplastic material using an extruder having an extruder die head with an inner die member that forms a lumen in the tube in preform condition. The tube in preform condition is subjected to a temperature conditioning. Use is made of a expansion device comprising a non-deformable expansion part having a gradually increasing diameter to a maximum diameter, which expansion part is contacted by the tube and exerts an expanding force so as to bring about expansion of the tempered tube in circumferential direction. The method comprises drawing the tempered tube over the expansion device using a drawing device, in such a manner that said tube is transformed from a tube in preform condition into a biaxially oriented tube with thermoplastic material which is oriented in axial direction and in circumferential direction of the tube. 1. An installation for producing a biaxially oriented tube from thermoplastic material comprising:an extruder with an extruder die head having an inner die member adapted to extrude a tube in preform condition from a thermoplastic material, the inner die member forming a lumen in the tube;one or more tempering devices for temperature conditioning the perform, so that a tempered tube in preform condition is obtained having an orientation temperature suitable for the thermoplastic material; and a non-deformable expansion part having an increasing diameter to a maximum diameter at a downstream end of the expansion part, the expansion part being contacted by the tube and exerting an expanding force on the tube to expand the tempered tube in a circumferential direction;', 'a run-on part located upstream of the expansion part, the run-on part having an upstream nose end;', 'one or more fluid supply ducts having a port in the outer surface of the run-on part or the expansion part, so that a fluid volume is formable between the ...

SYSTEM AND METHOD FOR PERFORATING PAINT-ROLLER COVER FABRIC

In an embodiment, a paint roller manufacturing system and method uses a fabric-coating applicator to apply a fabric adhesive onto a portion of a perforated paint roller cover fabric material having a plurality of perforations through which adhesive may flow, and into the plurality of perforations and into interstitial spaces of the fabric material, to yield a length of coated fabric. An inner strip and an outer strip are wound about a mandrel in offset relation. A strip-coating applicator is used to apply a strip adhesive to the outer strip as it is wound about the mandrel. Simultaneously with the step of applying the strip adhesive to the outer strip, a portion of the coated paint roller fabric material is received at the outer strip and the length of coated fabric is wound about at least the outer strip to form a paint roller tube. 1. A method for using a perforated fabric in a paint roller manufacturing process , comprising:using a fabric-coating applicator to apply a fabric adhesive onto a portion of a perforated paint roller cover fabric material having a plurality of perforations through which adhesive may flow, and into the plurality of perforations and into interstitial spaces of the fabric material, to yield a length of coated fabric;winding an inner strip and an outer strip about a mandrel in offset relation;using a strip-coating applicator to apply a strip adhesive to at least a portion of the outer strip as it is wound about the mandrel;simultaneously with the step of applying the strip adhesive to the outer strip, receiving a portion of the coated paint roller fabric material at the outer strip and winding the length of coated fabric about at least the outer strip to form a paint roller tube;applying compression to the paint roller tube; and,cutting the paint roller tube into like lengths.2. The method for using a perforated fabric in a paint roller manufacturing process according to claim 1 , wherein the perforated paint roller fabric material ...

METHOD OF MANUFACTURING A BELT MEMBER AND THE BELT MEMBER

A tube material is formed by continuously extruding a thermoplastic resin material in the shape of a cylinder that has a thickness of 100 μm and a circumferential length of 800 mm. After that, in a polishing process, the tube material is rubbed with a lapping tape of #2000 while being rotated in one direction at a fixed speed, so that circumferential stripes are formed on the outer circumferential surface of the tube material. Then, the circumferential stripes are thermally transferred by pressing the outer circumferential surface of the heated tube material against a mold surface that is finished in the shape of circumferential stripes by a thermal transfer process. 110-. (canceled)11. A method of manufacturing an endless belt member configured to be abutted against a cleaning blade in an image forming apparatus , the method comprising:a first process of forming a belt member in cylindrical shape from a thermoplastic resin material;a second process of mechanically polishing an outer surface of the belt member after the first process to form circumferentially extending stripes on the outer surface of the belt member; anda third process of heating the outer surface of the belt member in a state in which the outer surface of the belt member is in contact with a mold so as to reduce burrs of the circumferentially extending stripes caused by the second process and leave the circumferentially extending stripes on the outer surface of the belt member.12. The method according to claim 11 , wherein claim 11 , in the third process claim 11 , said heating is applied by the mold.13. The method according to claim 12 , wherein claim 12 , in the third process claim 12 , the mold is an outer mold opposed to the outer surface of the belt member claim 12 , andwherein, in the third process, said heating is applied with the belt member pressed between the outer mold and an inner mold opposed to an inner surface of the belt member.14. The method according to claim 13 , wherein ...

FABRIC AND DIE DESIGN FOR DIVIDED CONDUIT

A method of forming a conduit having at least one strip-shaped fabric substrate dividing the conduit into channels. The method contains obtaining an extrusion die configured to form the wall of the conduit and a slot configured for receipt of a strip-shaped fabric substrate and introducing a strip-shaped fabric substrate into the slot. The strip-shaped textile is air permeable and contains enlarged regions at the first and second longitudinal edges. Molten polymer is introduced at a first point in the extrusion die and at the first point the slot and the area configured to form the wall of the conduit are not in communication. The slot is exposed to the molten polymer at a point between the first point and the die exit forming the first polymeric layer of the conduit such that the first longitudinal and second longitudinal edges of the strip-shaped fabric substrate embed into the molten polymer. 1. A method of forming a conduit having at least one strip-shaped fabric substrate dividing the conduit into channels , the method comprising:obtaining an extrusion die having an exit and defining a flow direction for polymeric material forming the conduit, wherein the die comprises an area configured to form the wall of the conduit and a slot having a thickness, a width, a first edge, and a second edge, wherein the slot configured for receipt of a strip-shaped fabric substrate, wherein the slot extends in the flow direction along the extrusion die, wherein the thickness of the slot varies along the width of the slot, wherein the thickness of the slot is greatest at the first edge and second edge of the slot;introducing a strip-shaped fabric substrate into the slot, wherein the strip-shaped fabric substrate comprises a first longitudinal edge and a second longitudinal edge, wherein the strip-shaped textile is selected from the group consisting of a woven, non-woven, and knit, wherein the strip-shaped textile is air permeable, and wherein the strip-shaped fabric substrate ...

HOLLOW, COMPOSITE REBAR STRUCTURE, ASSOCIATED FABRICATION METHODOLOGY, AND APPARATUS

A rebar structure for concrete reinforcement may include an elongate tubular central wall portion having an inside surface and an outside surface. The central wall portion may be formed circumferentially around a core axis and may include glass or carbon fibers mostly being oriented longitudinally parallel to the core axis. The rebar structure may include an inner wall portion bonded to the inside surface of the central wall portion. The inner wall portion may include glass or carbon fibers and may have a higher percentage of fibers oriented non-parallel to the core axis as compared to the central wall portion. 1. A rebar structure for concrete reinforcement , comprising:an elongate tubular central wall portion having an inside surface and an outside surface, formed circumferentially around a core axis, the central wall portion including fibers comprising at least one of glass, carbon, and basalt, the fibers mostly being oriented longitudinally parallel to the core axis, andan inner wall portion bonded to the inside surface of the central wall portion, the inner wall portion including glass or carbon fibers, the inner wall portion having a higher percentage of fibers oriented non-parallel to the core axis as compared to the central wall portion.2. The rebar structure of claim 1 , further comprisingan elongate tubular outer wall portion bonded to the outside surface of the central wall portion, the outer wall portion including fibers comprising at least one of glass, carbon, and basalt, the outer wall portion having a higher percentage of fibers oriented non-parallel to the core axis as compared to the central wall portion.3. The rebar structure of claim 2 , wherein the fibers in the inner and outer wall portions are mostly longer than one inch per fiber.4. The rebar structure of claim 1 , wherein the inner wall portion is comprised of a fiber mat.5. The rebar structure of claim 1 , wherein the inner wall portion is comprised of texturized rovings.6. The rebar ...

Hose with Rubber and Plastic

A hose is provided comprising a rubber backing layer directly bonded to a continuous polyamide layer without an intervening adhesive layer, wherein the hose exhibits increased low and high temperature capability and decreased permeation compared to standard automotive refrigerant hoses. 2. The hose of claim 1 , wherein the EPDM is present in the first composition within a range of from about 20 wt % to about 60 wt % compared to the total weight of the first composition.3. The hose of claim 2 , wherein the EPDM is present in the first composition within a range of from about 30 wt % to about 40 wt % compared to the total weight of the first composition.4. The hose of claim 1 , wherein the ethylene propylene diene monomer (EPDM) is low ethylene EPDM having no more than about 60 wt % ethylene compared to the total weight of EPDM.5. The hose of claim 1 , wherein the phenylenedimaleimide is present in the first composition within a range of from about 0.01 wt % to about 10 wt % of the total weight of the first composition.6. The hose of claim 5 , wherein the phenylenedimaleimide is present in the first composition within a range of from about 0.1 wt % to about 5 wt % of the total weight of the first composition.7. The hose of claim 1 , wherein the phenylenedimaleimide is N claim 1 ,N′-m-phenylenedimaleimide.8. The hose of claim 1 , wherein the maleated compound is present in the first composition within a range of from about 0.1 wt % to about 10 wt % of the total weight of the first composition.9. The hose of claim 1 , wherein the maleated compound is present in the first composition within a range of from about 0.5 wt % to about 5 wt % of the total weight of the first composition.10. The hose of claim 1 , wherein the maleated compound is maleated polybutadiene.11. The hose of claim 1 , wherein the first composition further comprises a plasticizer.12. The hose of claim 11 , wherein the plasticizer is present in the first composition within a range of from about 1 wt % to ...

Medical device balloons with improved strength properties and processes for producing same

A tubular parison for forming a medical device balloon. The parison is formed of a polymeric material, for instance a thermoplastic elastomer. The parison has an elongation at break which is not more than 80% of the elongation of the bulk polymeric material. The elongation of the parison is controlled by altering extrusion conditions. Balloons prepared from the parisons provide higher wall strength and/or higher inflation durability than balloons prepared from conventional parisons of the same material.

System, Method and Apparatus For Producing a Multi-Layer, Annular Microcapillary Product

The instant disclosure provides a die assembly for producing an annular microcapillary product. The die assembly is operatively connectable to an extruder having a thermoplastic material passing therethrough. The die assembly includes a shell, an inner manifold, an outer manifold, and a die assembly. The inner and outer manifolds are positionable in the shell with matrix flow channels thereabout to receive the thermoplastic material therethrough such that matrix layers of the thermoplastic material are extrudable therefrom. The die insert is disposable between the inner and the outer manifolds, and has a distribution manifold with a tip at an end thereof defining microcapillary channels to pass a microcapillary material therethrough whereby microcapillaries are formed between the matrix layers.

MULTI-LAYER TUBE AND PROCESS OF MAKING THE SAME

A vessel is configured to hold a product in an interior region formed in the vessel. The vessel includes an inner layer arranged to define the interior region and an outer layer. The vessel is formed using a blow-molding process in which a multiple layer parison is blow molded to form the vessel. The multiple layer parison is formed in an extrusion process in which a number of extruders are arranged to co-extrude associated inner and outer parisons to establish the multiple layer parison. 1. A method of producing a multiple layer tube , the method comprising the steps ofextruding an inner-layer formulation to form an inner parison,extruding a core-layer formulation to form a core parison,extruding an outer-layer formulation to form an outer parison,aligning the inner parison, the core parison, and the outer parison to cause the core parison to be located between the inner parison and the outer parison to cause the core parison to surround the inner parison and to be surrounded by the outer parison to form an extruded multiple layer tube,{'sup': 3', '3, 'wherein the multiple layer tube has a density of about 0.3 g/cmto 0.8 g/cm,'}wherein the core-layer formulation comprises one or more high density polyethylene base resins (HDPE), andwherein the core-layer formulation comprises a chemical nucleating agent, a physical nucleating agent, and a physical blowing agent.2. The method of claim 1 , wherein the multiple layer tube has a density of about 0.4 g/cmand the core parison has a density less than a density of the inner parison.3. The method of claim 1 , wherein the core parison has a density of about 0.1 g/cmto 0.8 g/cm.4. The method of claim 3 , wherein the core parison has a density of about 0.3 g/cmto 0.35 g/cm.5. The method of claim 4 , wherein the core parison has a density of about 0.32 g/cm.6. The method of claim 5 , wherein the core parison has a density less than a density of the outer parison.7. The method of claim 6 , wherein the density of the inner ...

MANUFACTURING PROCESS FOR POLYMERIC STENTS

Methods and systems of fabricating a polymeric stent are disclosed herein. 115-. (canceled)16. A method of fabricating a stent comprising:forming a polymer tube made of a biodegradable polymer, wherein the biodegradable polymer of the formed tube is amorphous or substantially amorphous;processing the tube to increase the crystallinity of the biodegradable polymer from amorphous or substantially amorphous to between 35% and 55%;cutting a pattern in the processed tube to form a cylindrically-shaped scaffold, wherein the scaffold includes a pattern of interconnecting struts,wherein the pattern comprises a plurality of cylindrical rings of struts and longitudinal linking struts connecting the rings,wherein the rings include bending elements including struts that flex inward to allow crimping of the scaffold and flex outward to allow expansion of the scaffold,wherein the scaffold is radially expandable in a blood vessel of a body and has adequate radial strength to hold open the blood vessel.17. The method of claim 16 , wherein the biodegradable polymer is a copolymer.18. The method of claim 16 , wherein the biodegradable polymer is a mixture of polymers.18. The method of claim 16 , wherein the processing comprises increasing a temperature of the tube above a glass transition temperature (Tg) of the biodegradable polymer.19. The method of claim 16 , wherein the processing comprises radial expansion of the tube to the target diameter at a temperature above the Tg of the biodegradable polymer.20. The method of claim 19 , wherein a radial draw ratio of the radial expansion of the tube is between 2 and 6.21. The method of claim 16 , further comprising crimping the stent on to a balloon at a diameter less than the target diameter so that the stent can be delivered into the blood vessel. This application is a divisional of U.S. application Ser. No. 14/255,896 file Apr. 17, 2014, which is a continuation of U.S. application Ser. No. 14/252,689 filed Apr. 14, 2014, now U.S. Pat. ...

METHOD FOR FORMING LONG HOLLOW ARTICLES AND DEVICE FOR IMPLEMENTING SAME (VARIANTS)

A device for forming long hollow articles includes an extruder and a forming attachment consisting of a die, a mandrel and an assembly for securing the mandrel inside the die. The working surfaces of the forming attachment are provided with one or more rows of profiled deformation elements disposed with an equal circumferential pitch on the working surfaces of the die and/or the mandrel. A blank of a plasticized material is forced through the mandrel securing assembly into an annular axisymmetric deformation region formed by the working surfaces of the mandrel and the die. In the region, the material undergoes additional drawing and deformation treatment prior to sizing. The design features of the device make it possible to realize cyclic drawing and compressive strains in an axial direction and in surfaces enveloping the working surfaces of the die and the mandrel across the entire length of the annular region, and cyclic compressive strains in a radial direction, as well as cyclic oppositely signed shear and flexural strains, resulting in uniform, intensive deformation treatment of the entire volume of material prior to the sizing of the blank. 1. Method for forming long hollow articles from powdered or plasticized masses , comprising forcing a blank through an annular axisymmetric deformation region , drawing out the material , shaping an article and calibrating the same , wherein in the process of shaping the article , the material is submitted to additional deformation processing comprising cyclic drawing up and setting deformations in the axial direction , and in the surfaces enveloping the working surfaces of the die and the mandrel along the entire length of the annular area cyclic setting deformations in the radial direction , as well as cyclic shearing and flexural strains in opposed-sign directions , the shearing strains being performed both in the planes passing through the axis of drawing up and in the planes orthogonal to said axis , the flexural ...

EXTRUSION PARISON HEAD FOR DISCONTINUOUS FOAMING

Extrusion head for manufacturing hose-like parisons from an extruded plastic material, which are made up from at least one first layer and a second layer, wherein the extrusion head comprises the following: 1. Extrusion head for producing hose-like parisons from extrudable plastic , which are made up from at least a first layer and a second layer , wherein the extrusion head comprises the following:a first manifold with a connection for a first extruder,a second manifold with a connection for a second extruder,a first flow channel with an annular first outlet opening for producing the first layer, wherein the first flow channel is fed by the first manifold,a second flow channel with an annular second outlet opening for producing the second layer, wherein the second flow channel is fed by the second manifold, anda mixer within the second flow channel with a connection for introducing a foaming agent.2. Extrusion head according to claim 1 , wherein the mixer is formed as a dynamic mixer.3. Extrusion head according to claim 2 , wherein the mixer has a shaft-like mixing element claim 2 , rotatingly drivable around a longitudinal axis of the extrusion head and which is arranged within a bore of a mixer housing claim 2 , wherein an annular channel portion is formed between the bore of the mixer housing and the mixing element which annular channel portion is part of the second flow channel.4. Extrusion head according to claim 3 , wherein mixing blades are arranged on an outer circumferential face of the mixing element.5. Extrusion head according to claim 4 , wherein mixing blades claim 4 , which interact with the mixing blades of the mixing element claim 4 , are provided on an inner circumferential face of the mixer housing.6. Extrusion head according to claim 3 , wherein the connection for introducing a foaming agents is provided on the mixer housing claim 3 , wherein a foaming agent feed line leads to the annular channel portion.7. Extrusion head according to claim 1 , ...

EXTRUDED BAR STOCK

An extrusion profile comprises a center aperture. The extrusion profile also comprises a peripheral aperture. The profile also comprises a first set of drill guides corresponding to a vertical center of the center aperture and a second set of drill guides corresponding to a horizontal center of the center aperture. 1. An extrusion profile for an extruded bar comprising:a center aperture;a peripheral aperture;a first set of drill guides corresponding to a vertical center of the center aperture; anda second set of drill guides corresponding to a horizontal center of the center aperture.2. The extrusion profile of and further comprising a plurality of additional peripheral apertures.3. The extrusion profile of and further comprising a third set of drill guides corresponding to a vertical center of the peripheral apertures and a fourth set of drill guides corresponding to a horizontal center of the peripheral apertures.4. The extrusion profile of wherein the peripheral apertures are substantially in a 0.770″ diagonal square configuration.5. The extrusion profile of claim 1 , wherein the center aperture comprises a circular feature.645. The extrusion profile of claim wherein the center aperture comprises a non-circular feature.7. The extrusion profile of claim 1 , further comprising a channel configured to receive an accessory.8. An extruded bar stock comprising:a center bore;a plurality of channels each comprising a groove aligned with a center of the center bore, such that the groove is configured to guide a drill bit substantially towards the center of the center bore; andwherein the center bore, channels and grooves run along a lateral length of the extruded bar stock.9. The extruded bar stock of claim 8 , wherein the center bore has a substantially 0.2501″ diameter.10. The extruded bar stock of claim 8 , and further comprising four peripheral bores in a square configuration.11. The extruded bar stock of claim 10 , wherein the square configuration is a substantially ...

HEAT STAKE AND METHOD OF ELIMINATING HEAT STAKE SINK MARKS IN A PLASTIC PART

A heat stake for a plastic part includes a body having a proximal end, a flared section and a distal end. The proximal end has a first cross-sectional area Aand the flared section has a second cross-sectional area Awhere A Подробнее

Cage for medical balloon

A cage can be positioned around a medical balloon, such as an angioplasty balloon, to assist in a medical procedure. The cage can include a plurality of strips, each extending between a set of rings including first and second rings. As the balloon expands, the first and second rings move closer together and allow the strips to expand outward. The cage may have wedge dissectors on the strips.

DIE FOR EXTRUDING A PIPE AND METHOD THEROF

A die for extruding a pipe includes a die head having an inlet for receiving and a bore for mixing an extrudate, a punch placed axially inside the die head, and a die cavity mounted at an outlet thereof. An outer surface of the die cavity includes flat surfaces at points of contact of a first adjustment structure which includes a plurality of flat end bolts perpendicular to each other positioned around the die cavity for adjusting position of the die cavity. The die further includes an extended orifice shaped as a thin walled tube formed around the orifice, and a second adjustment structure located at a tip of the orifice to distort the orifice for maintaining uniform flow of extrudate, and a plurality of segments are located around the orifice to uniformly distribute the load of the second adjustment structure on to the outer circumference of the orifice. 17-. (canceled)8. A die for extruding a pipe , comprising:a die head having an inlet for receiving an extrudate of a thermoplastic material under pressure followed by a bore of predetermined shape for shaping the extrudate;a punch placed axially in the die head, the punch comprising a converging portion followed by a circular portion defining an inside diameter of pipe;a die cavity at an outlet of the die head having a converging portion followed by an orifice for accommodating the punch, wherein an outer surface of the die cavity includes a flat surface at points of contact of a first adjustment structure positioned around the die cavity for adjusting position of the die cavity with respect to the punch;the first adjustment structure includes a plurality of flat end bolts perpendicular to each other, and slidably contacting the flat surfaces of the die cavity;an extended orifice shaped as a thin walled tube protruding from the die cavity outlet;a second adjustment structure located at a tip of the extended orifice to distort at predetermined locations of the extended orifice to maintain uniform flow of extrudate ...

METHODS AND APPARATUS FOR TRANSPORTING EMITTERS AND/OR MANUFACTURING DRIP LINE

Methods and apparatus for transporting or delivering elastomeric emitters and inserting elastomeric emitters into drip line are disclosed herein, and more particularly, to methods and apparatus for manufacturing drip line to form an irrigation assembly or system. In one form, the apparatus comprises a feeder, conveyor, emitter drive mechanism and guide bar for insertion into an extruder to bond the elastomeric emitter to an inner surface of the extruded tube. Friction reducing apparatus and methods are further disclosed as well. 1. An apparatus for transporting elastomeric emitters comprising:a feeder for dispensing emitters;a conveyor coupled to the feeder on a first end and connected to an emitter drive mechanism on a second end;an emitter drive mechanism aligned with and coupled to the second end of the conveyor and including a controller for operating the drive mechanism to drive emitters in a desired direction and at a desired pace or interval; anda guide bar coupled to the emitter drive mechanism and moveable between a first position wherein the guide bar is at least partially disposed within an extruder so that the guide bar may be used to bond emitters to tubing extruded from the extruder and a second position wherein the guide bar is removed from the extruder so that the extruder may be used to make tubing without emitters, wherein at least one of the conveyor and guide bar define at least one recess for receiving a portion of an emitter dispensed by the feeder so that a remainder of the emitter rests substantially on an upper surface of the conveyor and/or guide bar.2. The apparatus of wherein the conveyor and emitter drive mechanism are coupled to the guide bar and moveable together with the guide bar between the first and second positions.3. An apparatus for manufacturing drip line with elastomeric emitters comprising:a feeder for dispensing emitters;a conveyor coupled to the feeder on a first end and connected to an emitter drive mechanism on a second ...

Device for making foam pipes and method for making foam pipes

A device for making foam pipes and a method for making the foam pipes includes the use of critical micro foaming injection molding. The foaming agent and the foaming material are mixed and controlled under specific temperature to obtain micro bubbles in the wall of the foam pipes which need less material when compared with PVC pipes of same specification such that manufacturing cost is reduced.

Continuous Polymeric Liner Production Methods for Conformable Pressure Vessels

A method and apparatus for forming a pressure vessel liner are disclosed. One method includes forming an extruded tube by extruding a parison through a die and a mandrel and forming main body sections and return line sections in the extruded tube according to a first pattern. A cross-sectional area of the return line sections is smaller than a cross-sectional area of the main body sections. The method further includes changing the pattern according to which the main body sections and the return line sections are formed from the first pattern to a second pattern without stopping the forming of the extruded tube and forming the main body sections and the return line sections in the extruded tube according to the second pattern. 1. A method for forming a pressure vessel liner , comprising:forming an extruded tube by extruding a parison through a die and a mandrel;forming main body sections and return line sections in the extruded tube according to a first pattern, wherein a cross-sectional area of the return line sections is smaller than a cross-sectional area of the main body sections;changing the pattern according to which the main body sections and the return line sections are formed from the first pattern to a second pattern without stopping the forming of the extruded tube; andforming the main body sections and the return line sections in the extruded tube according to the second pattern.2. The method of claim 1 , wherein:forming the main body sections and the return line sections in the extruded tube according to the first pattern includes using a corrugator to apply circulating pairs of mold elements in the first pattern to the extruded tube, wherein the pairs of mold elements form a profile of an outside geometry of each section of the pressure vessel liner;changing the pattern includes selectively removing pairs of mold elements in the first pattern from the corrugator and replacing the removed pairs of mold elements with pairs of alternative mold elements in ...

ELASTOMERIC EMITTER AND METHODS RELATING TO SAME

An irrigation drip emitter, and methods relating to same, are provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. The emitter having at least one movable member for compensating for fluctuations in supply line fluid pressure. In one form the movable member includes a tapered baffle section movable between a first position wherein fluid is allowed to flow over the tapered baffle section and a second position wherein fluid is prevented from flowing over at least a portion of the tapered baffle section and the tapered baffle section effectively lengthening the extent of a pressure reduction passage. In another form, first and second movable members are provided for compensating for such pressure fluctuations. In another form, a plurality of inputs are provided which are movable between first and second positions to compensate for such pressure fluctuations. 1. A method of assembling an irrigation drip line comprising:providing a drip emitter comprising a discrete elastomeric emitter body integrally defining:an inlet on a first side of the body for receiving pressurized fluid from a fluid supply source;an outlet on a second side of the body for discharging the fluid from the body;a flow channel extending between the inlet and the outlet and having a pressure reduction portion having a plurality of non-tapered baffles and a pressure compensation portion having at least one tapered baffle;extruding a drip line tube; andinserting the drip emitter into the drip line tube as it is extruded such that the non-tapered baffles bond with an inner surface of the extruded drip line tube to form a sealed engagement so that the pressure reduction portion is enclosed and the pressure compensation portion remains movable with respect to the drip line tube.2. The method of wherein the emitter body defines a perimeter wall and inserting the drip emitter comprises inserting the drip emitter into the drip line ...

Article comprising tubular particles

This disclosure provides an article having a density of from 0.03 to 0.45 g/cc and including a plurality of anisotropic tubular particles that are randomly oriented in the article. The tubular particles include a thermoplastic elastomer foam and a polymer disposed on an exterior surface of the thermoplastic elastomer foam as an outermost layer of the particles. Each of the thermoplastic elastomer foam and the polymer independently has a softening temperature determined according to DIN ISO306. The softening temperature of the polymer is at least 5° C. lower than the softening temperature of the thermoplastic elastomer foam.

LIGHTWEIGHT COMPOSITES TUBES FOR HIGH PRESSURE AEROSPACE HYDRAULIC APPLICATION

A fluid conduit includes a first portion and a second portion disposed at least partially around the first portion. The first portion may include an extruded thermoplastic. The second portion may include a plurality of layers formed via fiber reinforced thermoplastic tape, tows, and/or fabric. The first portion and the second portion may be substantially rigid and may include concentric cylindrical cross-sections. The fiber reinforced thermoplastic tape, tows, and/or fabric may include nano-additives and/or micro-additives. 1. A fluid conduit , comprising:a first portion; anda second portion disposed at least partially around the first portion;wherein the first portion includes an extruded thermoplastic;wherein the second portion includes a plurality of layers formed via fiber reinforced thermoplastic tape, tows, and/or fabric.2. The fluid conduit of claim 1 , wherein the first portion and the second portion are substantially rigid and include concentric cylindrical cross-sections.3. The fluid conduit of claim 1 , wherein the fiber reinforced thermoplastic tape claim 1 , tows claim 1 , and/or fabric include nano-additives and/or micro-additives.4. The fluid conduit of claim 3 , wherein the nano-additives and/or micro-additives correspond to an electrical conductivity of the fluid conduit.5. The fluid conduit of claim 1 , wherein the fluid conduit includes a burst pressure of at least 23 claim 1 ,000 psi.6. The fluid conduit of claim 5 , wherein the fluid conduit has a weight of about 90 grams per meter or less.7. The fluid conduit of claim 6 , wherein a combined thickness of the first portion and the second portion is about 0.065 inches.8. The fluid conduit of claim 1 , wherein the plurality of layers includes at least 5 layers.9. The fluid conduit of claim 1 , wherein the first portion and the second portion are rigid and include one or more bends.10. The fluid conduit of claim 1 , wherein the first portion and the second portion are substantially cylindrical and ...

THIN FILM COMPOSITE HOLLOW FIBER MEMBRANES FOR OSMOTIC POWER GENERATION

Disclosed is a thin film composite hollow fiber that includes an outer support layer having a thickness of 10 to 10000 μm and a polyamide thin film layer having a thickness of 1 to 10000 nm; and has a transmembrane pressure resistance rate of higher than 15 bar and a pure water permeability rate of higher than 0.8 Lmhbar. Also disclosed are methods of preparing the above-described support and composite hollow fiber. 1. A thin film composite (TFC) hollow fiber comprising:an outer support layer that is formed of polyethersulfone, polysulfone, polyphenylsulfone, polyacrylonitrile, polyimide, polyether imide, polyamide-imde, polyvinylidene fluoride, cellulose triacetate, polyetherketone, or polyetheretherketone and has a thickness of 10 to 10000 μm, and{'sup': −2', '−1', '−1, 'an inner thin film layer that is formed of cross-linked polyamide and has a thickness of 1 to 10000 nm, the inner thin film layer adherent to the outer support layer, wherein the hollow fiber has a transmembrane pressure resistance rate of higher than 15 bar and a pure water permeability rate of higher than 0.8 Lmhbar.'}2. The TFC hollow fiber of claim 1 , wherein the outer support layer is formed of polyethersulfone.3. The TFC hollow fiber of claim 1 , wherein the hollow fiber has a transmembrane pressure resistance rate of higher than 20 bar and a pure water permeability rate of higher than 3.3 Lmhbar.4. The TFC hollow fiber of claim 2 , wherein the hollow fiber has a transmembrane pressure resistance rate of higher than 20 bar and a pure water permeability rate of higher than 3.3 Lmhbar.5. The TFC hollow fiber of claim 2 , wherein the hollow fiber has a salt permeability rate of lower than 0.5 Lmhand a power density rate of higher than 8 Wm.6. The TFC hollow fiber of claim 5 , wherein the hollow fiber has a power density rate of higher than 20 Wm.7. The TFC hollow fiber of claim 4 , wherein the hollow fiber has a salt permeability rate of lower than 0.5 Lmhand a power density rate of higher ...

Interface Tubing for Peristaltic Pump

A pump interface tubing for use in a peristaltic pump includes a tubular core having an outer surface and a treatment on the outer surface. The treatment reduces static charge buildup on the tubular core during operation of the peristaltic pump, and thereby reduces the noise signal that might otherwise undesirably couple to a signal of interest. Treatments include nitrile layers, heat shrink layers, cotton fiber layers, and anti-static sprays.

Method and Device for Producing Large-Volume Containers With Flange By Plastic Blow Molding

The invention relates to a method and a device for producing large-volume container trays of plastic. A tubular preform is guided over a mold frame which is facing two blow molds. During the closure of the blow molds, an encircling flange is formed on the outer edge of the container trays. After blow molding, the container trays are cut free from the mold frame along said mold frame.

PIPE

A polyetheretherketone pipe of length greater than 250 meters and a residual stress of less than 5 MPa may be made using a calibrator device which includes a cone shaped opening arranged to receive a molten extruded pipe shaped polymer. Attached to the front member is a vacuum plate and successive vacuum plates -are attached to one another to define an array of vacuum plates, the vacuum plates being arranged to allow a vacuum to be applied to a pipe precursor passing through opening . The vacuum plates also include temperature control means for heating or cooling the plates and therefore heating or cooling a pipe precursor passing through the openings. With a vacuum applied to opening and heating/cooling the plates, an extruded hot plastics pipe is inserted into calibrator via opening and conveyed through opening in plates , whereupon it is urged by the vacuum against the cylindrical surface defined by plates to maintain its shape and the temperature of each plate is controlled to control the rate of cooling of the pipe precursor passing through. The pipe may be cooled at a relatively slow rate so that a pipe made from a relatively fast crystallising polymer crystalises and the crystallinity of the pipe along its extent and throughout its thickness is substantially constant. 1. A pipe having a length of at least 1 m and a residual stress of less than 5 MPa , said pipe comprising:a polymeric material which includes:(a) phenyl moieties;(b) ether and/or thioether moieties; and, optionally,(c) ketone and/or sulphone moieties,{'sub': '0.5', 'wherein the polymeric material exhibits a crystallinity half-life (t) at 15° C. above its glass transition temperature (Tg) of less than 1000 seconds;'}wherein the thickness of a wall which defines the pipe is in the range of 0.6 mm to 6 mm.2. A pipe according to claim 1 , wherein the pipe comprises a single extrusion claim 1 , has a substantially constant cross-section along its entire extent and has a length of at least 100 m.3. A ...

MOLDING MACHINE CROSSHEAD AND PARISON FORMING METHOD USING SAME

The present invention provides a molding machine crosshead which uses one additional resin extruder and one base resin extruder that are connected to one annular flow channel of a crosshead unit at mutually different angular positions and which is configured to form a parison by adding an additional layer constituted by an additional resin from the additional resin extruder to a base layer constituted by a base resin supplied from the base resin extruder into the annular flow channel, the additional resin being a material different from the base resin, wherein the additional resin is formed in a linear shape along the longitudinal direction of the parison as part of the parison.

CONCENTRICITY ADJUSTMENT SLEEVE

A method and device for adjusting the concentricity of a die component of an extrusion assembly relative to a tip component in a manner that minimizes time and effort. The concentricity adjusting extrusion device includes an extrusion die body assembly including a die subassembly and a body, a die tip module and an adjustment sleeve subassembly; wherein said adjustment sleeve subassembly adjusts the concentricity of the die subassembly relative to the die tip module. 1. A concentricity adjusting extrusion device comprising an extrusion die body assembly including a die subassembly and a body , a die tip module and an adjustment sleeve subassembly; wherein said adjustment sleeve subassembly adjusts the concentricity of the die subassembly relative to the die tip module.2. A concentricity adjusting extrusion device according to wherein said die body assembly includes a die subassembly comprising a die.3. A concentricity adjusting extrusion device according to wherein said die subassembly additionally includes a die holder and one or more die nuts.4. A concentricity adjusting extrusion device according to claim 1 , wherein said tip module is a solid module (including cylindrical claim 1 , square claim 1 , profile) positioned in an axial bore cavity formed by the extrusion die subassembly forming a gap between the axial surface of the extrusion die subassembly and the tip module through which an extrusion flow exits the device.5. A concentricity adjusting extrusion device according to claim 1 , wherein said adjustment sleeve subassembly comprises a concentrical shouldered sleeve with one or more adjustment means that is placed over the extrusion die subassembly; wherein said adjustment sleeve subassembly maintains concentricity of the die subassembly claim 1 , and said adjustment sleeve subassembly may rotate around the die subassembly when the one or more adjustment means are loosened.6. A concentricity adjusting extrusion device according to claim 5 , wherein ...

AERIAL INTEGRATED MESSENGER CONDUIT

An overhead conduit includes a duct extending in a longitudinal direction. The duct has an outer wall. A strength member, such as a messenger wire, abuts the outer wall of the duct. An extruded jacket surrounds the duct and the messenger wire. The extruded jacket follows the outer contours of the duct and the messenger wire. Optional first and second sub-ducts, smaller than the duct, may be located to the right and left of the messenger wire. 1. An overhead conduit comprising:a duct extending in a longitudinal direction, said duct having an outer wall and an inner wall;a strength member extending in the longitudinal direction, said strength member having an outer surface, wherein a portion of said outer surface of said strength member abuts said outer wall of said duct; andan extruded jacket surrounding said duct and said strength member, said extruded jacket having an outside surface and an inside surface, wherein a portion of said inside surface of said extruded jacket abuts said outer wall of said duct and a portion of said inside surface of said extruded jacket abuts said outer surface of said strength member.2. The overhead conduit of claim 1 , wherein first and second air pockets are formed to the sides of the abutment between said strength member and said duct claim 1 , said first and second air pockets being defined by said inside surface of said extruded jacket claim 1 , said outer wall of said duct and said outer surface of said strength member.3. The overhead conduit of claim 2 , wherein at least portions of said first and second air pockets are filled with a gel claim 2 , foam or caulk.4. The overhead conduit of claim 2 , wherein said first and second air pockets possess first and second sub-ducts claim 2 , respectively claim 2 , wherein a diameter of said first sub-duct is less than half a diameter of said duct claim 2 , and wherein a diameter of said second sub-duct is less than half the diameter of said duct.5. The overhead conduit of claim 1 , ...

Continuous Fiber Reinforced Biocomposites and Polymers

A device for introducing continuous fiber into a product material is provided. The continuous fiber is provided from at least one continuous fiber supply. The device comprises a housing having a first opening and a second opening. A channel is formed through the housing from the first opening to the second opening. At least one fin member extends from the housing into the channel with the at least one fin member having a conduit formed therethrough. Upon the product material travelling through the channel of the housing, the continuous fiber travels from the continuous fiber supply, through the conduit, and into the product material. The continuous fiber increases strength and stiffness of the product material while decreasing time-dependent creep deformation of the product material. 1. A method for introducing continuous fiber into a product material , the continuous fiber being provided from at least one continuous fiber supply , the method comprising:forming a channel through an extrusion die tool housing wherein the product material travels linearly through the channel;softening the product material with a heating element within the housing as the product material travels through the channel;extending a plurality of fin members from the housing into the channel, each fin member having a conduit formed therethrough;wherein the continuous fiber travels from the continuous fiber supply, through the conduit, and into the product material; andwherein the product material is a polymer or polymer composite material.2. The method of wherein the continuous fiber is placed below an outer surface of the product material.3. The method of wherein each fin member is associated with a different continuous fiber supply.4. The method of further comprising coating the continuous fiber in order to enhance the bond between the continuous fiber and the product material.5. The method of wherein the product material is hollow.6. The method of wherein the plurality of fin members are ...

POLYMER COMPOSITION COMPRISING A BLEND OF A MULTIMODAL POLYETHYLENE AND A FURTHER ETHYLENE POLYMER SUITABLE FOR THE PRODUCTION OF A DRIP IRRIGATION PIPE

The present application relates to a polymer composition as defined in claims comprising (A) a polymer base resin, which comprises a blend of (A-1) a multimodal ethylene polymer and (A-2) an ethylene polymer, and carbon black, a drip irrigation pipe comprising said polymer composition, a process for producing said drip irrigation pipe, pellets comprising said polymer composition and the use of said polymer composition for producing said drip irrigation pipe. 119-. (canceled)20. Polymer composition comprising [{'sup': '3', '(A-1) a multimodal ethylene polymer having a density of 930 kg/mor less, and'}, (A-2-a) ethylene polymer produced in the presence of a coordination catalyst or', 'wherein the amount of the multimodal ethylene polymer (A-1) is of 65 wt % to 96 wt % and the amount of the ethylene polymer (A-2) is of 4 wt % to 35 wt %, based on the total amount of the polymer base resin (A); and', '(A-2-b) ethylene polymer produced in a high pressure polymerization process in the presence of a radical initiator, or mixtures thereof,'}], '(A-2) a further ethylene polymer which is other than the multimodal ethylene polymer (A-1) and selected from'}], '(A) a polymer base resin comprising'} {'sub': '5', 'wherein the polymer composition has a MFRof 1.5 g/10 min to 10 g/10 min.'}, '(B) carbon black;'}21. The polymer composition of claim 20 , wherein the multimodal ethylene polymer (A-1) is a multimodal linear low density ethylene polymer obtainable by polymerization in the presence of a Ziegler-Natta catalyst.22. The polymer composition according to claim 20 , wherein the multimodal ethylene polymer (A-1) comprises a low molecular weight (LMW) component and a high molecular weight (HMW) component claim 20 , wherein the weight average molecular weight Mw of the HMW component is higher than the weight average molecular weight Mw of the LMW component claim 20 , preferably whereinthe LMW component is an ethylene homopolymer or, preferably, copolymer of ethylene with at least ...

Plastic Corrugated Tube for Surrounding Pipes and Method for Producing Such a Corrugated Tube

A plastic corrugated tube for surrounding pipes, having corrugations distributed over its length and a longitudinal slit running along a lateral longitudinal line is provided. The corrugated tube can be converted into an open position by opening the longitudinal slit and into a closed position in which edge regions of the corrugated tube overlap, wherein the corrugated tube is elastically prestressed toward its dosed position. The corrugations on the edge region of the corrugated tube, which in the closed position lies radially below the other edge region of the corrugated tube, are offset radially inwards within a predefined circumferential region with respect to the corrugations outside this circumferential region and are designed such that, in the closed position, they are in engagement with the radial underside of the corrugations of the other edge region, which corrugations engage over them such that they are mutually displaceable in the circumferential direction. 1. A plastic corrugated tube for the encasing of conductors with corrugations alternating in succession and distributed along its length , and having a longitudinal slit extending along a lateral longitudinal line , wherein the corrugated tube for the inserting of the conductors can be converted into an opened position , exposing the longitudinal slit , and also into a closed position , in which the edge regions of the corrugated tube lying on either side of the longitudinal slit overlap , wherein the corrugated tube is elastically prestressed in the direction of assuming its closed position , and the edge region of the corrugated tube lying radially underneath the other edge region of the corrugated tube in the closed position is provided with corrugations on its circumference within a predetermined circumferential region , which are offset radially inwards as compared to the corrugations outside of the predetermined circumferential region and are configured such that in the closed position they ...

EBM ePET CONTAINER DROP-IMPACT ENHANCEMENT

A method for improving the impact resistance of an extrusion blow molded article by extrusion blow molding an ultra-high IV polymer resin having an IV of at least 0.9 dL/g, wherein the extrusion blow molding is carried out in a mold with a texturized base surface such that a base surface of the extrusion blow molded article is textured. 1: A method for improving the impact resistance of an extrusion blow molded article , the method comprising:extrusion blow molding an ultra-high IV polymer resin having an IV of at least 0.9 dL/g, to obtain a extrusion blow molded article comprising an outlet at a first end, a base portion at a second end, a body portion located between the outlet and the base, and a chime connecting the body portion and the base,wherein the extrusion blow molding is carried out in a mold with a texturized base surface such that a base surface of the extrusion blow molded article is textured.2: The method of claim 1 , wherein the ultra-high IV polymer resin is an ultra-high IV polyester resin having an IV of at least 0.9 dL/g.3: The method of claim 1 , wherein the ultra-high IV polymer resin is an ultra-high IV polyester resin having an IV of at least 1.1 dL/g.4: The method of claim 1 , wherein the ultra-high IV polymer resin is an ultra-high IV polyester resin having an IV of at least 1.3 dL/g.5: The method of claim 1 , wherein the extrusion blow molded article is a container.6: The method of claim 1 , wherein the extrusion blow molded article is a bottle.7: The method of claim 1 , wherein the extrusion blow molded article is handleware.8: The method of claim 1 , wherein the mold is texturized.9: The method of claim 8 , wherein the texture of the mold is produced or created by at least one selected from the group consisting of sandblasting claim 8 , vapor deposition claim 8 , plasma etching claim 8 , and powdered metalized surfaces.10: The method of claim 9 , wherein the texture of the mold is produced by sandblasting.11: The method of claim 10 , ...

VERY THIN TUBE MADE FROM TPU AND ITS PRODUCTION PROCESS

The present invention is directed to a process for the preparation of a tube with an outer diameter in the range of from 10 μm to 250 μm consisting of a composition comprising a thermoplastic polyurethane as well as to a tube with an outer diameter in the range of from 10 μm to 250 μm consisting of a composition comprising a thermoplastic polyurethane obtained or obtainable by the process according to the invention. The invention is further directed to the use of a tube according to the invention as a tube for the transportation of a fluid or as gas membrane tube or as an elastic fiber. 1. A process for preparing at least one tube with an outer diameter of from 10 μm to 250 μm comprising a thermoplastic polyurethane , the process comprising(i) melting a thermoplastic polyurethane in an extruder at a temperature of 160° C. to 230° C. to obtain a molten thermoplastic polyurethane;(ii) to the molten thermoplastic polyurethane, adding a composition comprising a cross linker comprising isocyanate groups to obtain a mixture and mixing the mixture to form a melt;(iii) extruding the melt through a spinneret heated at 180° C. to 230° C. to obtain a melt-spun elastic tube;(iv) cooling the melt spun elastic tube in a cooling section to obtain a cooled melt spun elastic tube; and(v) contacting the cooled melt spun elastic tube with finish oil in a finishing section, the finish oil being selected from the group consisting of mineral oil and silicone oil;wherein the extruder, the cooling section, and the finishing section are arranged in a vertical setting.2. The process according to claim 1 , wherein the tube is round.3. The process according to claim 1 , wherein the tube has soft stretch properties.4. The process according to claim 1 , wherein the spinneret has more than one opening.5. The process according to claim 4 , wherein said more than one opening are arc-like slots.6. The process according to claim 1 , wherein the spinneret is heated to a temperature of from 180° C. to ...

POLYMER COMPOSITION

A composition may contain a first polymer, a second polymer, and a block copolymer. The first polymer may be polyactic acid, starch, polybutylene succinate, poly(butylene adipate-co-terephthalate), or a mixture thereof. The second polymer may be polybutadiene, high impact polystyrene, or a mixture thereof. The block copolymer may be a block copolymer of polylactic acid and polybutadiene. The composition may be prepared by a process that includes contacting the first polymer with the second polymer and the block copolymer. Articles may be prepared from the composition. 114-. (canceled)15. A composition comprising:a first polymer selected from the group consisting of polylactic acid, starch, polybutylene succinate, polybutylene adipate-co-terephthalate), and mixtures thereof;a second polymer selected from the group consisting of polybutadiene, high impact polystyrene, and mixtures thereof; anda block copolymer of polylactic acid (PLA) and polybutadiene (PB).16. The composition according to claim 15 , wherein the block copolymer is selected from the group consisting of PLA-PB diblock copolymer claim 15 , PLA-PB-PLA triblock copolymer claim 15 , PLA-PB multiblock copolymer claim 15 , PLA-PB star copolymers claim 15 , PLA-PB comb copolymers claim 15 , PLA-PB gradient containing block copolymers; and mixtures thereof.17. The composition according to claim 15 , wherein the first polymer is polylactic acid.18. The composition according to claim 15 , wherein the second polymer is polybutadiene.19. The composition according to claim 15 , wherein the composition comprises from 5 to 95% by weight of the first polymer based on a total weight of the composition.20. The composition according to claim 15 , wherein the composition comprises from 5 to 95% by weight of the second polymer based on a total weight of the composition.21. The composition according to claim 15 , wherein the composition comprises from 1 to 90% by weight of the block copolymer based on a total weight of the ...

Method Of Tubular Microlayer And Multi-Component Co-Extrusion Via Deflector Perturbation

The present invention relates to a method of transforming multilayered and/or multi-component streams into tubular shapes prior to or during extrusion by passing the streams over a deflector. The invention also relates to dies containing spiral, bowtie, circumferential and/or wrapping deflectors and products made by such methods. 1. A method of transforming multilayered or multi-component streams into a tubular shape prior to or during extrusion , comprising passing one or more multilayered or multi-component stream(s) over a deflector and then extruding the transformed stream into a tubular shape product.2. A method according to wherein the defector is a spiral deflector.3. A method according to claim 1 , wherein the deflector is a bowtie deflector.4. A method according to claim 1 , wherein the deflector is a circumferential deflector.5. A method according to claim 1 , wherein the deflector is a wrapping deflector.6. A method according to claim 1 , wherein the tubular shape product has two to ten thousand layers.7. A method according to claim 1 , wherein the tubular shape product has two to one thousand layers.8. A method according to claim 1 , wherein the tubular shape product has two to one hundred layers.9. A method according to claim 1 , wherein the tubular shape product has two to ten layers.10. A method according to claim 6 , wherein the tubular shape product layers are of multiple thicknesses.11. A method according to claim 10 , wherein at least one of the tubular shape product layers is of millimeter thickness.12. A method according to claim 10 , wherein at least one of the tubular shape product layers is of micrometer thickness.13. A method according to claim 10 , wherein at least one of the tubular shape product layers is of nanometer thickness.14. A die containing spiral claim 10 , bowtie claim 10 , circumferential and/or wrapping deflectors coupled to multilayered or multi-component streams.15. A tubular extrusion product containing two to ten thousand ...

Multimodal polyethylene composition with high pressure resistance

The present invention relates to a multimodal polyethylene composition which can be manufactured into pipes showing improved pressure resistance comprising a high density multimodal ethylene polymer component (A) having a density of at least 930 kg/m 3 , and a MFR 21 of not more than 15 g/10 min, wherein said composition exhibits a LAOS-NLF defined as L   A   O   S - N   L   F =  G 1 ′ G 3 ′  where G 1 ′—first order Fourier Coefficient G 3 ′—third order Fourier Coefficient of at least 1.7. Such a polyethylene composition is useful for the manufacture of pressure pipes that exhibit improved pressure resistance and creep resistance and do not undergo sagging. Further disclosed is a process for the production of a pipe using such a multimodal polyethylene composition and a pipe comprising such a multimodal polyethylene composition.

EXTRUSION TOOL WITH HEATING OF THE OUTLET REGION, METHOD FOR PRODUCING A TUBULAR PLASTICS FILM

The invention relates to an extrusion tool () for a film blow head () of a tubular extrusion system for extrusion of a tube () from a plastic melt () with a tool body (), which comprises a melting channel () for a configuration of a tube (), wherein the tool body () comprises a collar area () with an outlet opening () for the tube (). 118-. (canceled)19. Extrusion tool for a film blow head of a tubular extrusion system for extrusion of a tube from a plastic melt with a tool body , which comprises a melting channel for a configuration of a tube , wherein the tool body comprises a collar area with an outlet opening for the tube ,and the tool body is configured in a way that a heater intended at the tool body effects only a local heating of the collar area,whereinthe tool body comprises a heat separation, which effects that the heat resulting from the heater almost achieves the collar area, wherein the distance remains between the heat separation and the melting channel.20. Extrusion tool according to claim 19 ,whereinthe heat separation extends in the direction of the melting channel, wherein the extension of the heat separation proceeds mainly perpendicular to the extension of the melting channel and the extension of the heat separation is aligned in a defined angle, wherein the effectiveness of the local heating of the collar area is influenced.21. Extrusion tool according to claim 19 ,whereinthe heat separation is integrated in the tool body in a way, that the heat flow occurs only in the direction of the melting channel of the collar area.22. Extrusion tool according to claim 19 ,whereinthe heat separation is integrated in the tool body in a way, that a heat outlet from the collar area into the remaining tool body is minimized.23. Extrusion tool according to claim 19 ,whereinthe collar area extends protrusion-like from the tool body, wherein the heater is assembled in or at the collar area.24. Extrusion tool according to claim 19 ,whereinthe heat separation is ...

THERMOPLASTIC ELASTOMER TUBING AND METHOD TO MAKE AND USE SAME

A thermoplastic elastomer tube can include a thermoplastic elastomer component disposed within a matrix. In an embodiment, the thermoplastic elastomer component is disposed within the matrix in a thermoplastic elastomer phase having a number of domains. At least approximately 50% of the domains of the thermoplastic elastomer component have an aspect ratio of no greater than approximately 1.5. In a particular embodiment, the thermoplastic elastomer tube comprises at least approximately 20 wt % of the thermoplastic elastomer component and no greater than approximately 50 wt % of a polyolefin component. In some embodiments, the thermoplastic elastomer component includes styrene. 1. A process comprising:providing a number of starting materials to a twin screw extruder, the starting materials including a thermoplastic elastomer;mixing the starting materials in the twin screw extruder to provide a twin screw extruder output;providing the twin screw extruder output to a pump; andproviding an output of the pump to a die to form a thermoplastic elastomer tube.2. The process of claim 1 , further comprising heating the number of starting materials in the twin screw extruder to form a melt.3. The process of claim 2 , wherein a temperature of the melt is no greater than approximately 230° C.4. The process of claim 1 , wherein a first portion of the number of starting materials comprises solid materials claim 1 , a second portion of the number of starting materials comprises liquid materials claim 1 , a third portion of the number of starting materials comprises gaseous materials claim 1 , or a combination thereof.5. The process of claim 1 , wherein a pressure at an input of the die varies by no greater than approximately 10% from a specified input pressure.6. The process of claim 1 , wherein the output of the pump is provided to the die and mandrel via one or more filtering devices.7. The process of claim 1 , further comprising cooling the thermoplastic elastomer tube.8. The ...

SYSTEMS AND METHODS FOR MANUFACTURING REINFORCED WEATHERSTRIP

Methods for manufacturing fabric-reinforced weatherstrip include incorporating a fabric application step into a process for making coated substrates. In one embodiment, a strip of the fabric from a roll of material may be applied directly onto a coating after it has been applied in a coat die to a foam profile, while the coating is still in the molten state. Alternatively, a fabric application plate may be attached to an upstream side of coating die with a fabric feed channel cut into the plate. The fabric follows the channel to contact and mate with the foam profile. The fabric applicator plate may be configured so as to exert pressure on only the part of the product where the fabric is being applied. Ultrasonic welding techniques may also be employed. 125-. (canceled)26. A weatherstrip comprising:a foam profile;a stiffener in mating contact with the foam profile; anda coating layer substantially coating the foam profile, wherein at least a portion of the foam profile not in mating contact with the stiffener is not coated by the coating layer.27. The weatherstrip of claim 26 , wherein the coating layer at least partially coats the stiffener.28. The weatherstrip of claim 26 , wherein the portion of the foam profile not coated by the coating layer is covered by a fabric layer.29. The weatherstrip of claim 26 , wherein the foam profile comprises an irregular elongate shape.30. The weatherstrip of claim 29 , wherein the portion of the foam profile not coated by the coating layer is disposed proximate the stiffener.31. The weatherstrip of claim 26 , wherein the foam profile comprises a hinge shape.32. The weatherstrip of claim 31 , wherein the hinge is covered by a fabric layer.33. The weatherstrip of claim 32 , wherein the fabric layer is at least partially covered by the coating layer.34. A weatherstrip comprising a contiguous exterior surface defined by a stiffener material claim 32 , a coating material claim 32 , and a foam material.35. The weatherstrip of claim 34 ...

EXTRUSION COATING OF ELONGATED SUBSTRATES

The present disclosure relates to extrusion coating systems, extrusion coated substrates, and processes for making the same. In some aspects, extrusion coating systems as described herein may include an at least partially insulated outlet wall, which may facilitate production of coated substrates exhibiting a very desirable surface texture and appearance. Coated substrates of the present invention may be utilized in a variety of end applications, including, but not limited to, interior and exterior construction materials for homes, buildings, and furniture. 1. A coated article comprising:an elongated substrate; anda thermoplastic resin coating extrusion coated onto said substrate, wherein said coated article is a water-quenched article that has not been subjected to a post-quench treatment step and has an average Rmax surface roughness of not more than 40;wherein said coated substrate has a length of at least 5 feet;wherein said elongated substrate comprises natural wood, wood composites, medium-density fiber board, particle board, oriented strand board, plastic, cellularized PVC, foam, metal, fiberglass, ceramics, cement and combinations thereof; andwherein said resin coating comprises one or more of polyesters, copolyesters, polycarbonates, acrylics, cellulose esters, polyolefins, nylons, polyvinylchloride, and combinations thereof.2. The article of claim 1 , wherein said coating is applied to the substrate in a molten or melted form.3. The article of claim 1 , wherein the glass transition temperature of the polymers in said coating material is at least 70° C.4. The article of claim 1 , wherein the glass transition temperature of the polymers in said coating material is at least 60° C.5. The article of claim 1 , wherein said substrate comprises a natural or composite wood substrate or PVC.6. The article of claim 1 , wherein the surface of said coated substrate has less than 10 bubbles per 100 feet.7. The article of claim 1 , wherein the surface of said coated ...

ASSEMBLY FOR CREATING AN EXTRUDED PIPE FOR USE IN A GEOTHERMAL HEAT RECOVERY OPERATION

An assembly and process for forming a two stage extruded pipe having a central inner sleeve and a pair of outer attached lobes. The central sleeve shaped (also termed a grout receiving tube) is produced in an initial extrusion operation, following which it enters a cross head operation where a pair of outer lobes are attached to cross sectional exterior surface locations according to a second stage extrusion operation so as to be integrally formed therewith. Other steps include cooling of the dual stage extruded pipe, as well as sectioning and stacking the pipe. Additional steps include forming elongated slots or apertures into the central sleeve portion of the finished extrusion, such in non-interfering fashion with the individual passageway defining and lobes. 1. An assembly for producing a two stage extruded pipe , comprising:a first extruder receiving a first extrudate material for forming a sleeve shaped component;a second extruder including a cross head die through which is fed the sleeve shape component, said second extruder also including a pair of elongated mandrels extending from an outlet of said cross head die and between which communicates the sleeve shaped component, a second extrudate material flowing across each mandrel and conjoining the sleeve shaped component at circumferentially spaced apart locations in order to form a pair of individual passageway defining lobes upon the sleeve;said second extruder further having independent temperature controls for each of said elongated mandrels and for assisting in shaping the attachment interface between the lobes and central sleeve;a cooling station in communication with extending ends of said elongated mandrels for receiving and supporting the two stage extruded pipe during cooling and hardening; anda puller communicating with an outlet of said cooling station for drawing the two stage extruded pipe and prior to cutting the co-extruded pipe to specified running lengths.211. The assembly as described in ...

METHOD OF MAKING HOLLOW FIBER WITH GRADIENT PROPERTIES

There is provided a method of making a hollow fiber having improved resistance to microfracture formation at a fiber-matrix interface. The method includes mixing in a first solvent a plurality of nanostructures, one or more first polymers, and a fugitive polymer which is dissociable from the nanostructures and the one or more first polymers, to form an inner-volume portion mixture. The method further includes mixing in a second solvent one or more second polymers to form an outer-volume portion mixture, spinning the inner-volume portion mixture and the outer-volume portion mixture and extracting the fugitive polymer from the inner-volume portion mixture to form a precursor fiber, heating the precursor fiber to oxidize the precursor fiber and to change a molecular-bond structure of the precursor fiber, and obtaining a hollow fiber with the inner-volume portion having the nanostructures and the first polymers, and with the outer-volume portion having the second polymers. 1. A method of making a hollow fiber having improved resistance to microfracture formation at a fiber-matrix interface , the method comprising:mixing in a first solvent a plurality of nanostructures, one or more first polymers, and a fugitive polymer which is dissociable from the nanostructures and the one or more first polymers, in order to form an inner-volume portion mixture;mixing in a second solvent one or more second polymers in order to form an outer-volume portion mixture;spinning the inner-volume portion mixture and the outer-volume portion mixture and extracting the fugitive polymer from the inner-volume portion mixture in order to form a precursor fiber;heating the precursor fiber to oxidize the precursor fiber and to change a molecular-bond structure of the precursor fiber; and an inner-volume portion having a first-core portion with the nanostructures and with the one or more first polymers being oriented in a direction parallel to a longitudinal axis of the hollow fiber, the inner-volume ...

SIZING DIE, EXTRUSION MOLDING APPARATUS, AND METHOD OF MANUFACTURING TUBULAR MEMBER USING THE SAME

Provided is a sizing die corresponding to a member installable between an extruder and a take-up machine, including a side surface in contact with an inner or outer surface of a tubular molten resin extruded toward the take-up machine through an annular die by the extruder, and causing the molten resin to flow along the side surface such that a shape of the molten resin matches a shape of the side surface, wherein the side surface includes a first region and a second region in an order of being close to the annular die in a flow direction of the molten resin, and surface roughness of the first region is smaller than surface roughness of the second region. 1. A sizing die corresponding to a member installable between an extruder and a take-up machine , including a side surface in contact with an inner or outer surface of a tubular molten resin extruded toward the take-up machine through an annular die by the extruder , and causing the molten resin to flow along the side surface such that a shape of the molten resin matches a shape of the side surface ,wherein the side surface includes a first region and a second region in an order of being close to the annular die in a flow direction of the molten resin, andsurface roughness of the first region is smaller than surface roughness of the second region.2. The sizing die according to claim 1 , whereinthe surface roughness of the first region is less than or equal to a target value for a molded article, andthe surface roughness of the second region is greater than or equal to a value allowing prevention of an occurrence of stick-slip in the molten resin flowing in the second region.3. The sizing die according to claim 1 , wherein the first region corresponds to a portion of the side surface subjected to mirror processing.4. The sizing die according to claim 3 , wherein the mirror processing on the first region corresponds to plating.5. The sizing die according to claim 1 , wherein the first region includes a mold release ...

FILMS CONTAINING NUTRIENTS OR COMPONENTS FOR USE BY SOIL OR PLANTS

Polymer films containing nutrients and/or components for use by soil, plants and/or animals are biodegradable and compostable. Film compositions may include bio-based and fossil-based polymers along with nutrients and other components that can be utilized by soil, plants, animals, as well as pigments and additives. The films may be configured as three-layer coextruded films with two outside layers and an inside layer therebetween. The films of the present disclosure may be produced using blown film processes. The films are used in agricultural or other growing settings and provide a biodegradable, compostable film that delivers nutrients and/or components to soil, plants and/or animals over the course of and following film degradation. 1. A film for use in agriculture or horticulture comprising a cross-linked biodegradable polymer film and one or more nutrients or components within the cross-linked film for use by one or more of soil or plants , the film adapted to be flexible and to release the one or more nutrients or components after deployment.2. The film of claim 1 , wherein the one or more nutrients or components comprises at least one of: nitrogen claim 1 , phosphorous claim 1 , fertilizers claim 1 , metals claim 1 , micronutrients claim 1 , herbicides claim 1 , silicon dioxide claim 1 , alumina claim 1 , calcium oxide claim 1 , ferric oxide or potassium oxide.3. The film of claim 1 , wherein the biodegradable polymer comprises a composition of bio-based and fossil-based polymers.4. The film of claim 3 , wherein the biodegradable polymer comprises polylactic acid (PLA) and polybutyrate (PBAT).5. The film of claim 1 , wherein a thickness of the film is about 0.5 mils to about 1.0 mil.6. The film of claim 1 , wherein the film is a three-layer coextruded film comprising two outside layers and an inside layer therebetween.7. The film of claim 6 , wherein each of the outside layers account for about 15 to 20 percent of the total thickness of the film claim 6 , and ...

MOLDING APPARATUS

A molding apparatus includes: a die provided with a die recessed portion; a core being relatively movable toward a first side and a second side in an axial direction of the die, and forming a flow passage for molten resin between the core and the die; a slider housed in the die recessed portion, having a gap in the die radial direction between the slider and the die recessed portion, the slider being slidable in the die axial direction; and a wall portion forming part of an inner wall in the die radial direction of the die recessed portion, positioned to oppose the core, and extending in such a way that a thickness of the wall portion gradually decreases heading from the first side toward the second side; wherein the wall portion is elastically flexible outward in the die radial direction in a case in which the wall portion is pushed by the molten resin. 1. A molding apparatus comprising:a die having a hollow cylinder shape and provided with a die recessed portion that is open toward a second side in an axial direction of the die;a core disposed on a radial direction inner side of the die, being relatively movable toward a first side and the second side in an axial direction of the die with respect to the die, and forming a flow passage for molten resin between the core and the die;a slider housed in the die recessed portion in a state in which a gap in the die radial direction exists between the slider and the die recessed portion, the slider being slidable in the die axial direction;a wall portion forming part of an inner wall in the die radial direction of the die recessed portion, positioned to oppose the core, and extending in such a way that a thickness of the wall portion gradually decreases heading from the first side toward the second side in the die axial direction; anda slide mechanism causing the slider to slide in the die axial direction,wherein the wall portion is elastically flexible outward in the die radial direction in a case in which the wall ...

Production method of deformed porous hollow fiber membrane

Methods of producing a deformed porous hollow fiber membrane by thermally induced phase separation, particularly by discharging a fusion kneaded product containing a thermoplastic resin and an organic liquid through an orifice of a hollow fiber-forming deformed nozzle; cooling and solidifying the fusion kneaded product discharged through the deformed nozzle to form the product into a hollow fiber-like material having a deformed cross section at a cross section vertical to a discharging direction; and extracting away the organic liquid from the hollow fiber-like material to obtain the deformed porous hollow fiber membrane, wherein an inorganic fine powder is kneaded in the fusion kneaded product.

COMPLETELY DISPOSABLE COOKING APPARATUS FOR FILLING AND DECORATING OF FOODS

A cooking apparatus used for filling and decorating of foods, comprising in some embodiments a one-piece, funnel-shaped bag with a soft side wall, having an open first end at the “top” through which food material and coloring agents can be inserted into the bag and a closed second end at the “bottom” end of the funnel, with an integral, malleable, conical shaped, discharge orifice. The orifice may have serrations or ridges extending inwardly from the internal wall of the orifice, running longitudinally or parallel to the cone axis. The orifice may be initially closed or manufactured with a small opening. The orifice may be made of a material capable of being cut to yield an exit opening. The inwardly extending serrations that remain after a cut may insure that the material is “treated” as it is expelled from the bag through the orifice to yield a ribbon candy design. 2. The device of claim 1 , wherein said orifice and said envelope are attached by means of ultrasonic welding.3. The device of claim 1 , wherein said envelope is made from 0.1 mm thick polyethylene and said orifice is made from 1.02 mm thick ethylene vinyl acetate.4. The device of claim 1 , wherein said orifice has an outside wall and cutting guides applied to said outside wall of said orifice along its length claim 1 , indicated by scoring or coloring and corresponding to a preset orifice hole or exit opening size.5. The device of claim 1 , wherein said envelope is filled with foodstuffs and then sealed.6. A method for producing a stream of food material with a three-dimensional ribbon candy appearance with multiple channels having different stripes of color on the channel peaks and channel valleys claim 1 , using a one-piece disposable food decorating bag with an internal wall and an attached orifice having internal treatment means running along the longitudinal axis of the orifice and extending inwardly in a direction perpendicular to the longitudinal axis of the orifice claim 1 , comprising the ...

Fiber reinforced-pultruded running board

A running board includes an integral hollow body having a step face and a first sidewall. The integral hollow body is made from a base polymer material with continuous reinforcing fibers running from a first end to a second, opposite end of the first sidewall while the step face is made from unfilled base polymer material. A production method is also disclosed.

METHOD AND APPARATUS FOR PRODUCING A CORRUGATED TUBE

A method is provided for producing a corrugated tube that has, at least in sections, first outer wall regions with a first external diameter and second outer wall regions with a second external diameter that alternate in a wave-shaped manner. The first external diameter is greater than the second external diameter. The corrugated tube is produced by a plastic vacuum/blow molding process in a plastic vacuum/blow mold with a corrugator (). One or more openings are made in at least some of the first outer wall regions. The openings are made in at least some of the first outer wall regions of the corrugated tube during the plastic vacuum/blow molding process within the corrugator (). 1. A method for producing a corrugated tube that has first outer wall regions with a first external diameter and second outer wall regions with a second external diameter , the first and second outer wall regions alternating in a wave-shaped manner , the first external diameter being greater than the second external diameter , the corrugated tube being produced by a plastic vacuum/blow molding process in a plastic vacuum/blow mold with a corrugator , and one or more openings being made in at least some of the first outer wall regions , the method comprising forming the openings in at least some of the first outer wall regions of the corrugated tube during the plastic vacuum/blow molding process within the corrugator.2. The method of claim 1 , wherein the step of forming the openings comprises forming the openings with the aid of mandrels arranged in at least some shaping recesses in the corrugator for shaping the first outer wall regions.3. The method of claim 2 , wherein each of the mandrels is arranged fixedly in one of the shaping recesses.4. The method of claim 1 , wherein the step of forming the openings comprises forming the openings to have a diameter of from approximately 0.5 mm to approximately 1 mm in at least some of the first outer wall regions of the corrugated tube.5. An ...

METHODS, SYSTEMS, AND APPARATUSES FOR MANUFACTURING ROTATIONAL SPUN APPLIANCES

The present disclosure relates to methods and systems for manufacturing rotational spun materials. The rotational spun materials are medical appliances or other prostheses made of, constructed from, covered or coated with rotational spun materials, such as polytetrafluoroethylene (PTFE). 1. A method of making a rotational spun appliance , the method comprising:rotating a spinneret around a first axis of rotation to produce spinning fibers;rotating a plurality of mandrels, each mandrel rotating about its own axis of rotation, wherein each mandrel's axis of rotation is not the same as the first axis of rotation; andcontacting the spinning fibers with the rotating mandrels, such that fibers are deposited on the mandrels.2. The method of claim 1 , wherein the plurality of mandrels are collectively and simultaneously rotating around the first axis of rotation.3. The method of claim 1 , further comprising placing fiber-wrapped mandrels in a sintering oven and sintering the fiber-wrapped mandrels.4. An apparatus for making a rotational spun appliance claim 1 , the apparatus comprising:a spinneret configured to rotate around a first axis of rotation and produce spinning fibers;a surface configured to rotate around the first axis of rotation independently from rotation of the spinneret;actuators mounted on the rotatable surface; andmandrels operably connected to the actuators and configured for rotation by the actuators, wherein each of the actuators is configured to rotate at least one mandrel around its own axis of rotation, such that each mandrel's own axis of rotation is not the same as the first axis of rotation.5. The apparatus of claim 4 , further comprising a support member configured to rotatably engage and support a distal end of each of the mandrels.6. The apparatus of claim 4 , wherein a proximal end of each mandrel is cantilevered by an actuator.7. The apparatus of claim 4 , wherein the longitudinal axis of each of the mandrels is parallel to the surface.8. The ...

Thermoplastic Polyurethane Composition

A thermoplastic polyurethane composition includes a thermoplastic polyurethane (TPU) and a polyoxymethylene. The thermoplastic polyurethane composition comprises 50 to 95 parts by weight of the TPU and 5 to 50 parts by weight of the polyoxymethylene, per 100 parts by weight of the thermoplastic polyurethane composition. The thermoplastic polyurethane composition has an Izod notched impact of greater than 0.5 fflb/in at −40° C. as determined by ASTM D256 10, Method A, and an elastic modulus of greater than 700 psi at 130° C. as determined by ASTM D412. A fluid transfer tube is formed from the thermoplastic polyurethane composition. 1. A thermoplastic polyurethane composition comprising:50 to 95 parts by weight of a thermoplastic polyurethane, per 100 parts by weight of the thermoplastic polyurethane composition;5 to 50 parts by weight of a polyoxymethylene, per 100 parts by weight of the thermoplastic polyurethane composition; andan anhydride-functional compatibilizer;wherein said thermoplastic polyurethane composition has an Izod notched impact of greater than 0.5 ft·lb/in at −40° C. as determined by ASTM D256 10, Method A, and an elastic modulus of greater than 700 psi at 130° C. as determined by ASTM D412.2. A thermoplastic polyurethane composition as set forth in wherein the anhydride-functional compatibilizer is a maleic anhydride-functional polyethylene or polypropylene.3. A thermoplastic polyurethane composition as set forth in wherein said thermoplastic polyurethane is selected from the group of polyether-based thermoplastic polyurethanes claim 1 , polyester-based thermoplastic polyurethanes claim 1 , and combinations thereof.4. A thermoplastic polyurethane composition as set forth in wherein said thermoplastic polyurethane is a polyether-based thermoplastic polyurethane.5. A thermoplastic polyurethane composition as set forth in wherein said thermoplastic polyurethane has a weight average molecular weight of greater than 50 claim 1 ,000 g/mol.6. A ...

ANTI-FOULING SEISMIC STREAMER

A seismic streamer and associated method are provided. The seismic streamer may include a seismic streamer core having a cylindrical configuration. A melt-processable thermoplastic layer may be coupled with the seismic streamer core, the melt-processable thermoplastic layer being extruded to form a first tube. An elastomeric layer may be coupled with the melt-processable thermoplastic layer, the elastomeric layer being extruded to form a second tube. 1. A seismic streamer comprising:a seismic streamer core having a cylindrical configuration;a melt-processable thermoplastic layer coupled with the seismic streamer core, the melt-processable thermoplastic layer extruded to form a first tube; andan elastomeric layer coupled with the melt-processable thermoplastic layer, the elastomeric layer extruded to form a second tube.2. The seismic streamer of claim 1 , wherein the melt-processable thermoplastic layer includes a thermoplastic polyurethane block co-polymer.3. The seismic streamer of claim 1 , wherein at least one of the first tube claim 1 , the second tube claim 1 , and the streamer core is flexible.4. The seismic streamer of claim 1 , wherein the melt-processable thermoplastic layer includes a fluoro-diol polymer.5. The seismic streamer of claim 1 , wherein the melt-processable thermoplastic layer includes a silicone-diol polymer.6. The seismic streamer of claim 1 , further comprising:an adhesive layer coupled with at least one of the melt-processable thermoplastic layer and the elastomeric layer.7. The seismic streamer of claim 1 , wherein at least one of the first tube claim 1 , the second tube and the streamer core includes a rigid core.8. The seismic streamer of claim 1 , wherein the elastomeric layer includes a first thickness and the melt-processable thermoplastic layer includes a second thickness claim 1 , the first thickness being less than the second thickness.9. The seismic streamer of claim 1 , wherein the elastomeric layer has a Young's modulus between ...

Polymeric material for container

A formulation for producing a polymeric material including high-density polyethylene, a chemical blowing agent, and other optional components is described.

CAPPED CARBON FILTER ASSEMBLY

A carbon filter is disclosed. Such a carbon filter includes a carbon-based core having a central cavity, a layer of a polymer-based filter material surrounding the carbon-based core, and at least one end cap fixedly attached to the carbon-based core. 1. A carbon filter comprising:a carbon-based core having a central cavity;a layer of a polymer-based filter material surrounding said carbon-based core; andat least one end cap fixedly attached to said carbon-based core.2. The carbon filter of claim 1 , wherein said carbon-based core has a cylindrical shape claim 1 , a top end claim 1 , a bottom end claim 1 , an external wall claim 1 , and an internal wall claim 1 , said external wall and said internal wall being substantially concentric claim 1 , said internal wall defining said central cavity claim 1 , said central cavity extending from said top end to said bottom end of said carbon-based core.3. The carbon filter of claim 1 , wherein said carbon-based core comprises a mixture of carbon and a binding material.4. The carbon filter of claim 3 , wherein said binding material comprises a polymer.5. The carbon filter of claim 4 , wherein said polymer is selected from the group consisting of polyester claim 4 , polypropylene claim 4 , and nylon.6. The carbon filter of claim 1 , wherein said at least one end cap comprises an opening therethrough.7. The carbon filter of claim 6 , wherein said carbon-based core has a cylindrical shape claim 6 , a top end claim 6 , a bottom end claim 6 , an external wall claim 6 , and an internal wall claim 6 , said external wall and said internal wall being substantially concentric claim 6 , said internal wall defining said central cavity claim 6 , said central cavity extending from said top end to said bottom end of said carbon-based core claim 6 , and wherein said at least one end cap is affixed to said top end of said carbon-based core.8. The carbon filter of claim 7 , wherein said opening in said at least one end cap aligns with said ...

METHOD OF FORMING COMPOSITE HANDLE

A method of forming an elongated composite element includes providing an elongated tubular member and establishing a plurality of holes through an outer wall of the elongated tubular member. A polymeric resin is provided that comprises a curable material that, when uncured, comprises a fluid material and that, when cured, comprises a substantially rigid material. The uncured polymeric resin is extruded along the elongated tubular member, whereby the polymeric resin flows at least partially through the holes and is disposed within the inner cavity and at an outer surface of the outer wall of the elongated tubular member. The polymeric resin is cured to form the composite element whereby the cured polymeric resin limits flexing of the at least one elongated tubular member and the elongated composite element. 1. A method of forming an elongated composite element , said method comprising:providing an elongated tubular member having an outer wall and inner cavity that extends along the length of said elongated tubular member and between opposite wall portions of said outer wall of said elongated tubular member;establishing a plurality of holes through said outer wall of said elongated tubular member;providing a polymeric resin that comprises a curable material that, when uncured, comprises a fluid material and that, when cured, comprises a substantially rigid material;extruding uncured polymeric resin along said elongated tubular member, whereby said uncured polymeric resin flows at least partially through said holes and is disposed within said inner cavity and at an outer surface of said outer wall of said elongated tubular member; andcuring said polymeric resin to form said composite element whereby said cured polymeric resin limits flexing of said at least one elongated tubular member and said elongated composite element.2. The method of claim 1 , comprising applying an outer layer over said elongated tubular member and at least partially over said polymeric resin ...