CARRIER TAPE FOR FOAM MATERIAL

Provided is a carrier tape for a foam material which exhibits satisfactory holding properties to a flexible foam material, exhibits satisfactory removability without causing fracture of the foam material, and has good peel properties upon picking up. The carrier tape for a foam material includes a substrate and, arranged on one side thereof, a pressure-sensitive adhesive layer. The carrier tape has a 180-degree peel strength of 0.15 N/20 mm or more at a tensile speed of 300 mm/min with respect to a foam (trade name “SCF100”, supplied by Nitto Denko Corporation). The carrier tape also has a 180-degree peel strength of 0.30 N/20 mm or less at a tensile speed of 10 m/min with respect to the foam (trade name “SCF100”, supplied by Nitto Denko Corporation). 1. A carrier tape for a foam material , comprising a substrate; and a pressure-sensitive adhesive layer present on or above one side of the substrate , wherein the carrier tape has a 180-degree peel strength of 0.15 newton per 20 millimeters (N/20 mm) or more at a tensile speed of 300 millimeters per minute (mm/min) with respect to a foam (trade name “SCF100” , supplied by Nitto Denko Corporation) , and wherein the carrier tape has a 180-degree peel strength of 0.30 N/20 mm or less at a tensile speed of 10 meters per minute (m/min) with respect to the foam (trade name “SCF100” , supplied by Nitto Denko Corporation).2. The carrier tape for a foam material according to claim 1 , wherein the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive layer.3. The carrier tape for a foam material according to claim 1 , wherein the pressure-sensitive adhesive layer contains a crosslinking agent.4. The carrier tape for a foam material according to claim 2 , wherein the acrylic pressure-sensitive adhesive layer principally comprises an acrylic polymer including claim 2 , as a principal structural component claim 2 , an alkyl (meth)acrylate whose alkyl moiety having 1 to 14 carbon atoms.5. The carrier tape for ...

POLYESTER ELASTOMER FOAM AND FOAM MATERIAL

There is provided a polyester elastomer which is excellent in compression set characteristics and has a micro cell structure. 1. A polyester elastomer foam which is formed by allowing a polyester elastomer composition containing a polyester elastomer having a melting point of 180 to 240° C. and an epoxy-modified polymer to expand.2. The polyester elastomer foam according to claim 1 , wherein the epoxy-modified polymer is an epoxy-modified polymer having a weight average molecular weight of 5 claim 1 ,000 to 100 claim 1 ,000 and an epoxy equivalent of 100 to 3000 g/eq.3. The polyester elastomer foam according to claim 1 , wherein the epoxy-modified polymer is at least one polymer selected from an epoxy-modified acrylic polymer and an epoxy-modified polyethylene.4. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam has a cell structure having an average cell diameter of 10 to 200 μm.5. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam has an apparent density of 0.01 to 0.20 g/cm claim 1 , a repulsive force at 50% compression of 0.1 to 4.0 N/cm claim 1 , and a compression set at 80° C. (after being maintained in a 50% compression state for 24 hours) of 60% or less.6. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam is formed through the steps of impregnating the polyester elastomer composition with a high-pressure gas and then subjecting the impregnated polyester elastomer composition to decompression to allow the impregnated polyester elastomer composition to expand.7. The polyester elastomer foam according to claim 1 , wherein the gas is an inert gas.8. The polyester elastomer foam according to claim 7 , wherein the gas is carbon dioxide gas.9. The polyester elastomer foam according to claim 6 , wherein the gas is in a supercritical state.10. A foam material comprising a polyester elastomer foam according to .11. The foam material according to claim 10 ...

RESIN FOAM AND FOAM SEALING MATERIAL

There is provided a resin foam excellent in dustproofness and assemblability.

RESIN COMPOSITION FOR POLYOLEFIN RESIN FOAM, POLYOLEFIN RESIN FOAM AND FOAMED SEALING MATERIAL

The present invention relates to a resin composition for a polyolefin resin foam, including: a polyolefin (A) having a melt flow rate (MFR) at a temperature of 230° C. of 0.2 to 0.7 g/10 min and a melt tension at break measured at a temperature of 190° C. of 30 cN or more; and a polyolefin (B) having a melt flow rate (MFR) at a temperature of 230° C. of 1.5 to 10 g/10 min and a melt tension at break measured at a temperature of 190° C. of 10 cN or more, in which the polyolefin (B) is contained in an amount of from 15 to 75 parts by weight based on 100 parts by weight of the polyolefin (A). 1. A resin composition for a polyolefin resin foam , comprising:a polyolefin (A) having a melt flow rate (MFR) at a temperature of 230° C. of 0.2 to 0.7 g/10 min and a melt tension at break measured at a temperature of 190° C. of 30 cN or more; anda polyolefin (B) having a melt flow rate (MFR) at a temperature of 230° C. of 1.5 to 10 g/10 min and a melt tension at break measured at a temperature of 190° C. of 10 cN or more,wherein the polyolefin (B) is contained in an amount of from 15 to 75 parts by weight based on 100 parts by weight of the polyolefin (A).2. The resin composition for a polyolefin resin foam according to claim 1 , further comprising a component (C) which comprises at least one selected from the group consisting of a rubber and a thermoplastic elastomer and a softener and has a melt flow rate (MFR) at a temperature of 230° C. of 3 to 10 g/10 min and a melt tension at break measured at a temperature of 190° C. of less than 10 cN claim 1 ,wherein the component (C) is contained in an amount of from 30 to 200 parts by weight based on 100 parts by weight of the polyolefin (A).3. A polyolefin resin foam formed by foaming the resin composition for a polyolefin resin foam according to .4. The polyolefin resin foam according to claim 3 , having an apparent density of 0.01 to 0.15 g/cm.5. The polyolefin resin foam according to claim 3 , having an average cell diameter of 10 ...

RESIN FOAM SHEET AND RESIN FOAM MEMBER

Disclosed is a resin foam sheet which has a low apparent density, is thin and flexible, and can be wound satisfactorily stably. The resin foam sheet has an apparent density of 0.02 to 0.30 g/cm, a tensile strength of 0.5 to 3.0 MPa, a thickness of 0.20 to 0.70 mm, a length of 5 m or more, and a width of 300 mm or more and has openings on both sides. The resin foam sheet preferably has a value of 30% or less determined according to following Expression (1): 1. A resin foam sheet having an apparent density of 0.02 to 0.30 g/cm , a tensile strength of 0.5 to 3.0 MPa , a thickness of 0.20 to 0.70 mm , a length of 5 m or more , and a width of 300 mm or more and having openings on both sides thereof.2. The resin foam sheet of claim 1 , wherein the resin foam sheet has a value of 30% or less claim 1 , the value determined according to following Expression (1):{'br': None, '(Thickness tolerance)/(Median thickness)×100\u2003\u2003(1)'}wherein the thickness tolerance is determined by measuring thicknesses at intervals of 10 mm on a measurement line passing through lengthwise one point and extending widthwise from one end to the other, further measuring thicknesses at intervals of 10 mm on another measurement line passing through another point 1 m lengthwise away from the lengthwise one point and extending widthwise from one end to the other, and defining a difference between a maximum and a minimum among all the measured thicknesses as the thickness tolerance; andthe median thickness is defined as a value in the center of all the measured thicknesses arranged in increasing order.3. The resin foam sheet of claim 1 , wherein the openings have been formed by slicing.4. The resin foam sheet of claim 1 , wherein the resin foam sheet has been formed by foaming a resin composition.5. The resin foam sheet of claim 4 , wherein the resin composition has been foamed with a supercritical fluid.6. A resin foam member comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the resin ...

RESIN FOAM AND FOAM SEALING MATERIAL

There is provided a resin foam excellent in dustproof performance, particularly dustproof performance in a dynamic environment. The resin foam of the present invention has a thickness recovery ratio of 65% or more, wherein the thickness recovery ratio is defined as a ratio of a thickness 1 second after releasing a compressed state to an initial thickness, when the resin foam is compressed for 1 minute in the thickness direction so as to give a thickness equal to 20% of the initial thickness in a 23° C. atmosphere; and then the compressed state is released in a 23° C. atmosphere. 1. A resin foam having a thickness recovery ratio of 65% or more , wherein the thickness recovery ratio is defined as a ratio of a thickness 1 second after releasing a compressed state to an initial thickness , when the resin foam is compressed for 1 minute in the thickness direction so as to give a thickness equal to 20% of the initial thickness in a 23° C. atmosphere; and then the compressed state is released in a 23° C. atmosphere.2. The resin foam according to claim 1 , wherein the resin foam has an average cell diameter of 10 to 180 μm claim 1 , a repulsive stress at 50% compression of 0.1 to 3.0 N/cm claim 1 , and an apparent density of 0.01 to 0.10 g/cm claim 1 , wherein the repulsive stress at 50% compression is defined as a repulsive load when the resin foam is compressed in the thickness direction so as to give a thickness equal to 50% of the initial thickness in a 23° C. atmosphere.3. The resin foam according to claim 1 , wherein a resin constituting the resin foam includes a thermoplastic resin.4. The resin foam according to claim 1 , wherein the resin foam is formed through the steps of impregnating a resin composition with high-pressure gas and then subjecting the impregnated resin composition to decompression.5. The resin foam according to claim 4 , wherein the gas is an inert gas.6. The resin foam according to claim 5 , wherein the inert gas is carbon dioxide.7. The resin ...

Foam laminate for electric or electronic device

The invention has an object to provide a foam laminate with excellent repeelability for electric or electronic devices. A foam laminate for electric or electronic devices of the invention has, on at least one side of a foam layer, a polyolefin-based pressure-sensitive adhesive layer containing a polyolefin, in which the polyolefin-based pressure-sensitive adhesive layer has a 180° peelability from an acrylic plate (tension rate: 0.3 m/min) of from 0.1 N/20 mm to 2.5 N/20 mm. The polyolefin-based pressure-sensitive adhesive layer is preferably a pressure-sensitive adhesive layer containing a polyolefin A having a crystal melting energy of less than 50 J/g, or a pressure-sensitive adhesive layer containing the polyolefin A and a polyolefin B having a crystal melting energy of 50 J/g or more in which a proportion of the polyolefin B is from 3 to 30% by weight with respect to a total polyolefin amount (100% by weight).

FOAM LAMINATED BODY FOR ELECTRICAL OR ELECTRONIC EQUIPMENT

The invention has an object to provide a foam laminate with excellent repeelability for electric or electronic devices. Also, the invention has an object to provide a foam laminate with excellent repeelability and excellent heat resistance for electric or electronic devices. A foam laminate for electric or electronic devices of the invention has, on at least one side of a foam layer, a pressure-sensitive adhesive layer having a crystal melting energy of 50 J/g or less, obtained according to the following: the crystal melting energy is a melting heat (J/g) obtained during a second heating in differential scanning calorimetry conducted under conditions of heating at a heating rate of 10° C./min to melt (a first heating), followed by cooling down to −50° C. at a cooling rate of 10° C./min (a first cooling), and then heating from −50° C. at a heating rate of 10° C./min (the second heating) (according to JIS K 7122). 1. A foam laminate for electric or electronic devices having , on at least one side of a foam layer , a pressure-sensitive adhesive layer having a crystal melting energy of 50 J/g or less , obtained according to the following:the crystal melting energy is a melting heat (J/g) obtained during a second heating in differential scanning calorimetry conducted under conditions of heating at a heating rate of 10° C./min to melt (a first heating), followed by cooling down to −50° C. at a cooling rate of 10° C./min (a first cooling), and then heating from −50° C. at a heating rate of 10° C./min (the second heating) (according to JIS K 7122).2. The foam laminate for electric or electronic devices according to claim 1 , wherein the pressure-sensitive adhesive layer is a polyolefin-based pressure-sensitive adhesive layer containing a polyolefin.3. The foam laminate for electric or electronic devices according to claim 2 , wherein the polyolefin-based pressure-sensitive adhesive layer contains a polyolefin A having a crystal melting energy of less than 50 J/g and a ...

Foam waterproofing material with a micro cell structure

To be provided is a foam waterproofing material superior in waterproofness and flexible enough to be compatible with further minute clearance. The foam waterproofing material according to the present invention is a waterproofing material including a foam having a thickness of 0.1 to 1.0 mm, characterized in that the foam has a micro cell structure with an average cell diameter of 10 to 60 μm and an apparent density of 0.01 to 0.060 g/cm 3 . In the foam waterproofing material, the repulsive load when compressed to 0.1 mm (0.1 mm-compressive repulsion force) of the foam is preferably 0.01 to 0.1 MPa. The foam preferably has a closed-cell structure or a semi-open- and semi-closed-cell structure. In addition, the foam may have a pressure-sensitive adhesive layer on one or both faces thereof. The pressure-sensitive adhesive layer is preferably formed on the foam via a film layer.

POLYESTER ELASTOMER FOAM

There is provided a polyester elastomer foam having a micro and uniform cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer and a surface-treated inorganic substance (except hydroxides) to expand. A residue on a 166 mesh sieve in the surface-treated inorganic substance (except hydroxides) is preferably not more than 0.01%. 1. A polyester elastomer foam which is formed by allowing a polyester elastomer composition containing a polyester elastomer and a surface-treated inorganic substance (except hydroxides) to expand.2. The polyester elastomer foam according to claim 1 , wherein a residue on a 166 mesh sieve in the surface-treated inorganic substance (except hydroxides) is not more than 0.01%.3. The polyester elastomer foam according to claim 1 , wherein the surface treatment is silane coupling treatment or treatment with a higher fatty acid or a salt thereof.4. The polyester elastomer foam according to claim 1 , wherein the inorganic substance other than hydroxides is hard clay or an alkaline earth metal carbonate.5. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer composition contains the surface-treated inorganic substance (except hydroxides) in an amount of 0.1 to 20% by weight relative to the total amount (100% by weight) of the polyester elastomer composition.6. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam has an apparent density of 0.03 to 0.3 g/cm claim 1 , an average cell diameter of 10 to 150 μm claim 1 , and a proportion of cells having a cell diameter of 50 to 100 μm of not less than 40% relative to all the cells.7. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam has a repulsive force at 50% compression of 0.1 to 5.0 N/cm.8. The polyester elastomer foam according to claim 1 , wherein the polyester elastomer foam is formed through the steps of impregnating ...

Resin foam and foam material

The present invention has the object of providing a resin foam and a foam material that exhibits superior dust resistance characteristics in a dynamic environment at the same time as having excellent light shielding characteristics, and is a resin foam having a repulsive force during an 80% compression at 23 degrees C. of 0.1 to 5.0 N/cm 2 , a surface coverage rate of a foam surface of at least 50%, and a thickness recovery rate as defined below of at least 50%, the thickness recovery rate is defined as the ratio to an initial thickness of the thickness one second after release of a compressed state that is obtained by releasing a compressed state after compressing resin foam for one minute to a thickness of 20% relative to the initial thickness.

Resin foam, foam member, and device with touch screen

Provided is a resin foam ( 13 ) that highly restrains the occurrence of display irregularities in a display unit when the resin foam is used in a touch-screen-equipped device ( 1 ), where the display irregularities may occur with user's touch operations. The resin foam ( 13 ) according to the present invention is obtained by expansion of a resin composition including a resin. The resin foam has a 25% compression load of 0.1 N/cm 2 to 8.0 N/cm 2 and is used in the touch-screen-equipped device ( 1 ). The resin is preferably at least one resin selected from the group consisting of polyolefin resins, polyester resins, and acrylic resins.

RESIN FOAM SHEET AND RESIN FOAM COMPOSITE MATERIAL

There is provided a resin foam sheet low in the apparent density and thin and flexible, and excellent in the stability in winding-up (wind-up stability). The resin foam sheet according to the present invention has an apparent density of 0.03 to 0.30 g/cm, a compression stress at 50%-compression of not more than 5.0 N/cm, a thickness of not less than 0.05 mm and not more than 0.40 mm, a length of not less than 5 m, and a width of not less than 300 mm. The value determined by the following expression (1) of the resin foam sheet is preferably not more than 25%. 1. A resin foam sheet , having: an apparent density of 0.03 to 0.30 g/cm , a compression stress at 50%-compression of not more than 5.0 N/cm , a thickness of not less than 0.05 mm and not more than 0.40 mm , a length of not less than 5 m , and a width of not less than 300 mm.2. The resin foam sheet according to claim 1 , wherein the resin foam sheet has a value of not more than 25% determined by the following expression (1):{'br': None, '(thickness tolerance)/(central value of thicknesses)×100\u2003\u2003(1),'}wherein the thickness tolerance refers to a difference between a maximum value and a minimum value in all measurement values acquired by a measurement wherein thicknesses are measured every 10 mm from one edge to the other edge in a width direction at a point in a longitudinal direction, and thicknesses are further measured every 10 mm from one edge to the other edge in the width direction at a point moved in the longitudinal direction by 1 m from the former point; andthe central value of thicknesses refers to a value positioned at the center in all measurement values arranged in ascending order acquired by a measurement wherein thicknesses are measured every 10 mm from one edge to the other edge in a width direction at a point in a longitudinal direction, and thicknesses are further measured every 10 mm from one edge to the other edge in the width direction at a point moved in the longitudinal direction ...

REPEELABLE FOAM LAMINATE FOR ELECTRONIC DEVICE, AND ELECTRIC OR ELECTRONIC DEVICESIN FOAM AND FOAM MATERIAL

A repeelable foam laminate for use of an electronic device has a structure in which a layer containing a polyolefin-based resin is laminated to at least one surface of a foam layer, and surface roughness Sa of the layer containing a polyolefin-based resin is no more than 10 micrometers. 1. A repeelable foam laminate for use of an electronic device being configured as a structure in which a layer containing a polyolefin-based resin is laminated to at least one surface of a foam layer , andsurface roughness Sa of the layer containing a polyolefin-based resin is no more than 10 micrometers.2. The repeelable foam laminate for use of an electronic device according to claim 1 , wherein apparent density of the foam layer is 0.02 to 0.20 g/cm claim 1 , and 'shear adhesive strength is at least 5 N/20×10 mm.', '180-degree adhesive strength of the layer containing a polyolefin-based resin is no more than 1.0 N/20 mm with respect to an acrylic plate, and'}3. The repeelable foam laminate for use of an electronic device according to claim 1 , wherein the layer containing a polyolefin-based resin does not deform in an atmosphere of 100 degrees C.4. The repeelable foam laminate for use of an electronic device according to claim 1 , wherein the crystal melting energy of the layer containing a polyolefin-based resin is no more than 50 J/g.5. The repeelable foam laminate for use of an electronic device according to claim 1 , wherein the polyolefin-based resin is an olefin-based resin containing a structural unit derived from propylene.6. An electronic or electrical device being used the repeelable foam laminate for use of an electronic device according to . The present invention relates to a repeelable foam laminate for use in relation to an electronic device, and to related types of electric or electronic devices.Typically, a gasket material is used by punching a resin foam into a window-frame shape on the periphery of a mobile device display unit such as a mobile telephone, digital ...

RESIN FOAM AND FOAM MATERIAL

A resin foam having a repulsive stress when compressed by 80% of 1.0 to 9.0 N/cm, a maximum breaking strength of 1.0 to 10.0 MPa, and a ratio of the maximum breaking strength to a breaking strength in a direction orthogonal to a maximum breaking strength direction (maximum breaking strength/breaking strength in the direction orthogonal to the maximum breaking strength direction) of 1.0 to 5.0. The maximum breaking strength is defined as: a resin foam in a sheet form is measured for a breaking strength in an arbitrary direction in the horizontal direction of the sheet; next, the arbitrary direction is rotated about an axis by 10° intervals to measure a breaking strength in each direction; a direction where the highest breaking strength is measured is defined as the maximum breaking strength direction; and a breaking strength in the maximum breaking strength direction is defined as the maximum breaking strength. 1. A resin foam having a repulsive stress when compressed by 80% of 1.0 to 9.0 N/cm2 , a maximum breaking strength as defined below of 1.0 to 10.0 MPa , and a ratio of the maximum breaking strength as defined below to a breaking strength in a direction orthogonal to a maximum breaking strength direction (maximum breaking strength/breaking strength in the direction orthogonal to the maximum breaking strength direction) of 1.0 to 5.0 ,wherein the maximum breaking strength is defined as follows: a resin foam in a sheet form is measured for a breaking strength in an arbitrary direction in a horizontal direction of the sheet; next, the arbitrary direction is rotated about an axis by 10° intervals to measure a breaking strength in each direction; a direction where the highest breaking strength is measured is defined as the maximum breaking strength direction; and a breaking strength in the maximum breaking strength direction is defined as the maximum breaking strength.2. The resin foam according to claim 1 , wherein the resin foam has an average cell diameter of 10 ...

PRESSURE SENSITIVE ADHESIVE, CURABLE PRESSURE SENSITIVE ADHESIVE COMPOSITION, PRESSURE SENSITIVE ADHESIVE SHEET AND METHOD FOR MANUFACTURING THEREOF

A pressure sensitive adhesive includes an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment. In the acryl-based base polymer, the content of the urethane-based segment is 3 to 20 parts by weight based on 100 parts by weight of the acryl-based segment. A pressure sensitive adhesive sheet can be obtained by applying a pressure sensitive adhesive composition on a substrate in a layer form. The pressure sensitive adhesive composition may be curable and may include a polymerization initiator. In formation of the pressure sensitive adhesive sheet, the curable pressure sensitive adhesive composition may be, as necessary. 1. A pressure sensitive adhesive comprising an acryl-based base polymer , whereinthe acryl-based base polymer contains an acryl-based segment and a urethane-based segment, anda content of the urethane-based segment is 3 to 20 parts by weight based on 100 parts by weight of the acryl-based segment.2. The pressure sensitive adhesive according to claim 1 , wherein a weight average molecular weight of the urethane-based segment is 3000 to 50000.3. The pressure sensitive adhesive according to claim 1 , wherein the urethane-based segment includes at least one polymer chain selected from the group consisting of a polyether chain claim 1 , a polyester chain claim 1 , a polycarbonate chain.4. The pressure sensitive adhesive according to claim 1 , wherein a glass transition temperature of the urethane-based segment is 0° C. or lower.5. The pressure sensitive adhesive according to claim 1 , wherein in the acryl-based base polymer claim 1 , the acryl-based segment is crosslinked with the urethane-based segment.6. The pressure sensitive adhesive according to claim 1 , wherein a content of the acryl-based base polymer in the pressure sensitive adhesive is 50% by weight or more.7. The pressure sensitive adhesive according to claim 1 , further comprising an acryl-based oligomer having a weight average ...

PRESSURE SENSITIVE ADHESIVE SHEET, METHOD FOR MANUFACTURING THEREOF, AND PRESSURE SENSITIVE ADHESIVE FILM

The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment. 1. A pressure sensitive adhesive sheet in which a pressure sensitive adhesive comprising an acryl-based base polymer is formed in a layer shape ,the acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment,the urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane, and a content of the urethane-based segment other than polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.2. The pressure sensitive adhesive sheet according to claim 1 , wherein a weight average molecular weight of the urethane-based segment is 3000 to 50000.3. The pressure sensitive adhesive sheet according to claim 1 , wherein an amount of a (meth)acrylic acid alkyl ester having a linear or branched alkyl group having 6 or less carbon atoms is 30 to 80% by weight based on a total amount of constituent monomer components of the acryl-based segment.4. The pressure sensitive adhesive sheet according to claim 1 , wherein a content of a polyether urethane-based segment is 3 parts by weight or more based on 100 parts by weight of the acryl-based ...

Polyester elastomer foam and foam material

There is provided a polyester elastomer which is excellent in compression set characteristics and has a micro cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer having a melting point of 180 to 240°C and an epoxy-modified polymer to expand. The epoxy-modified polymer is an epoxy-modified polymer having a weight average molecular weight of 5,000 to 100,000 and an epoxy equivalent of 100 to 3000 g/eq.

Laminate sheet, method of producing back substrate for plasma display panel, back substrate for plasma display panel, and plasma display panel

The invention provides a laminate sheet used for forming a dielectric layer and a rib simultaneously and integrally. The invention also provides a method of producing a back substrate for plasma display panel, which is excellent in the efficiency of production by reducing the production process significantly by using the laminate sheet. The laminate sheet of the invention is used for integrally forming a dielectric layer and a rib on a glass substrate having electrodes, which comprises a barrier layer laminated on a glass resin composition layer containing inorganic powder and a binder resin, and an inorganic powder-containing viscoelastic layer laminated on the barrier layer.

Polyester elastomer foam

本發明提供一種微胞結構微細且均勻之聚酯系彈性體發泡體。本發明之聚酯系彈性體發泡體之特徵在於：其係藉由使包含聚酯系彈性體、及經表面處理加工之無機物(氫氧化物除外)之聚酯系彈性體組合物發泡而形成。上述經表面處理加工之無機物(氫氧化物除外)中之166網眼篩餘物較佳為0.01%以下。

Laminate sheet, method of producing back substrate for plasma display panel, back substrate for plasma display panel, and plasma display panel

The invention provides a laminate sheet used for forming a dielectric layer and a rib simultaneously and integrally. The invention also provides a method of producing a back substrate for plasma display panel, which is excellent in the efficiency of production by reducing the production process significantly by using the laminate sheet. The laminate sheet of the invention is used for integrally forming a dielectric layer and a rib on a glass substrate having electrodes, which comprises a barrier layer laminated on a glass resin composition layer containing inorganic powder and a binder resin, an inorganic powder-containing viscoelastic layer laminated on the barrier layer.

Foamed waterproof material having finely cellular structure

Impact-absorbing material

The present invention relates to an impact-absorbing material including a foam having a thickness of from 0.1 to 1.0 mm, an average cell size of from 10 to 65 μm and a density of from 0.01 to 0.20 g/cm 3 and having an impact-absorbing property, as defined in the following expression (1), of from 40 to 90%: Impact-absorbing property (%)=(F 0− F 1 )/F 0 ×100 (1), in which F 0 represents an impact force at the time of making an impactor collide with only a support plate; and F 1 represents an impact force at the time of making an impactor collide with a support plate of a structure composed of the support plate and the impact-absorbing material.

Adhesive sheet for the removal of fluorescent substances

Pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

A PSA composition comprising a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound, a tackifier resin, and a softening agent is provided. The tackifier resin comprises a natural product-based tackifier resin (A) having a softening point higher than 80° C. and containing no aromatic ring, and a petroleum-based tackifier resin (B) having a softening point higher than 100° C. and containing an aromatic ring. The content of the tackifier resin (A) is 40 to 120 parts by weight, the content of the tackifier resin (B) is 5 to 40 parts by weight, the total amount of the tackifier resin is 60 to 160 parts by weight, and the content of the softening agent is 5 to 40 parts by weight with respect to 100 parts by weight of the block copolymer, with respect to 100 parts by weight of the block copolymer.

Haftklebebahn zur entfernung von fluoreszierenden substanzen

Hot-melt adhesive composition and adhesive sheet

Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier T which is a reaction product of a compound X and a compound Y. A content of the tackifier T with respect to 100 parts by weight of the base polymer is 20 parts by weight or more and 40 parts by weight or less.

Foam dustproofing material with a micro cell structure

To provide a dustproofing material having superior dustproofness and having such superior flexibility as to fit in a further minute clearance typically of 0.10 to 0.20 mm. Disclosed is a foam dustproofing material which is a dustproofing material including a foam having a thickness of 0.1 to 1.0 mm, in which the foam has a micro cell structure with an average cell diameter of 10 to 65 μm, has such characteristic properties as to give a load against repulsion of from 0.010 to 0.100 MPa upon compression to a thickness of 0.1 mm, and has an apparent density of 0.01 to 0.050 g/cm 3 . The foam preferably has a closed cell structure or semi-open/semi-closed cell structure. The foam dustproofing material may further include a pressure-sensitive adhesive layer on one or both sides of the foam. The pressure-sensitive adhesive layer is preferably present above the foam through a film layer.

Hot melt adhesive composition and adhesive sheet

Shock absorbing material

Hot-melt adhesive composition and adhesive sheet

Hot-melt pressure-sensitive adhesive composition and hot-melt pressure-sensitive adhesive sheet

Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier T which is a reaction product of a compound X and a compound Y. A content of the tackifier T with respect to 100 parts by weight of the base polymer is 20 parts by weight or more and 40 parts by weight or less.

Pressure Sensitive Adhesive Sheet, Method For Manufacturing Thereof, And Method For Manufacturing Image Display Device

Hot melt adhesive composition and adhesive sheet

Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier A represented by the following general formula (1):         R-[(CH 3 ) 2 C 6 H 2 -(CH 2 O) n -CH 2 ] m -OH     (1) (in the general formula (1), R is a hydrogen atom or a hydroxyl group, m is 9 to 16, and n is 0 to 3). A content of the tackifier A with respect to 100 parts by weight of the base polymer is 1 part by weight to 10 parts by weight.

Hot melt adhesive composition and adhesive sheet

Provided is a hot-melt PSA composition having a low viscosity when melted with heat and capable of suitably forming a PSA layer. A hot-melt PSA composition comprising a base polymer is provided. The base polymer comprises acrylic polymers A and B. The acrylic polymer A is a polymer of monomers comprising, as the primary component, a (meth)acrylic monomer A having an alkyl group with 4 to 8 carbon atoms. The acrylic polymer B is a polymer of monomers comprising, as a primary component, a (meth)acrylic monomer B having an alkyl group with 9 to 12 carbon atoms. In the base polymer, with the total amount of the acrylic polymers A and B being 100 % by weight, the acrylic polymer B content is 10 % by weight or more and 90 % by weight or less.

樹脂發泡體及發泡密封材

本發明提供一種防塵性優異、並且組裝性優異之樹脂發泡體。本發明之樹脂發泡體之特徵在於：80%壓縮時之反作用應力(將樹脂發泡體壓縮至初始厚度之80%時之反作用應力)為1.0~9.0 N/cm2，拉伸彈性模數為5.0~14.0 MPa。又，較佳為於上述樹脂發泡體中，平均微胞直徑為10~180 μm，視密度為0.01~0.10 g/cm3。

Resin foam and foam sealing material

Hot-melt pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

Provided is a hot-melt PSA composition having a low viscosity when melted with heat and capable of suitably forming a PSA layer. A hot-melt PSA composition comprising a base polymer is provided. The base polymer comprises acrylic polymers A and B. The acrylic polymer A is a polymer of monomers comprising, as the primary component, a (meth)acrylic monomer A having an alkyl group with 4 to 8 carbon atoms. The acrylic polymer B is a polymer of monomers comprising, as a primary component, a (meth)acrylic monomer B having an alkyl group with 9 to 12 carbon atoms. In the base polymer, with the total amount of the acrylic polymers A and B being 100% by weight, the acrylic polymer B content is 10% by weight or more and 90% by weight or less.

Resin Foam and Foam Sealing Material

There is provided a resin foam excellent in dustproofness and assemblability. The resin foam has a repulsive stress at 80% compression (repulsive stress when a resin foam is compressed by 80% of the initial thickness) of 1.0 to 9.0 N/cm 2 and a tensile modulus of elasticity of 5.0 to 14.0 MPa. Preferably, the resin foam further has an average cell diameter of 10 to 180 µm and an apparent density of 0.01 to 0.10 g/cm 3 .

Hot-melt pressure-sensitive adhesive composition and hot-melt pressure-sensitive adhesive sheet

Provided is a hot-melt pressure-sensitive adhesive composition which enables to form a pressure-sensitive adhesive layer without allowing the progression of rapid gelation at the time of heating and melting. The pressure-sensitive adhesive composition provided by the present invention is a solvent-free hot-melt pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition includes a base polymer, an isocyanate crosslinking agent, and a tackifier T which is a reaction product of a compound X and a compound Y. A content of the tackifier T with respect to 100 parts by weight of the base polymer is 20 parts by weight or more and 40 parts by weight or less.

誘電体層及び誘電体層形成基板の製造方法

Inorganic powder-containing resin composition, film-forming material layer, transfer sheet, method for producing substrate provided with dielectric layer, substrate provided with dielectric layer, and plasma display panel

無機粉体含有樹脂組成物、膜形成材料層、転写シート、誘電体層形成基板の製造方法、誘電体層形成基板、及びプラズマディスプレイパネル

　焼成工程での脱泡性に優れ、誘電体層における気泡の残存防止に顕著な効果を有し、低温度域で焼成させても焼成後には欠陥や曇りを生じることがなく、高い光透過率を有する光学特性に優れた誘電体層を形成することができる無機粉体含有樹脂組成物、膜形成材料層、転写シート、誘電体層形成基板の製造方法、誘電体層形成基板、及びプラズマディスプレイパネルの提供を目的とする。本発明の無機粉体含有樹脂組成物は、無機粉体と、バインダ樹脂と、アルカリ金属化合物、アルカリ土類金属化合物及び鉛系化合物からなる群より選択される少なくとも一種の金属化合物とを含有する。

Dielectric layer and manufacturing method of substrate for forming dielectric layer

Polyester elastomer foam

There is provided a polyester elastomer foam having a micro and uniform cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer and a surface-treated inorganic substance (except hydroxides) to expand. A residue on a 166 mesh sieve in the surface-treated inorganic substance (except hydroxides) is preferably not more than 0.01%.