13-01-2022 дата публикации
Номер: US20220009144A1
Принадлежит:
In a production apparatus, a pass line for conveying a film is formed in parts of both belts wound on common rolls and in contact with each other across the film, a discharge port of a discharger is so provided that the molten resin reaches one first roll, out of a group of first rolls, on a side upstream of the pass line, and the common rolls include a cooling roll for cooling and solidifying the molten resin discharged from the discharge port and having reached the first roll. 1. A production apparatus for a thermoplastic film F , comprising:a discharger T for discharging a thermoplastic molten resin in the form of a film from a discharge port TO, the molten resin becoming the thermoplastic film F;{'b': 1', '2, 'an endless first belt B and an endless second belt B;'}{'b': 1', '1', '1, 'a group of first rolls R, the first belt B being wound on the first rolls R; and'}{'b': 2', '2', '2, 'a group of second rolls R, the second belt B being wound on the second rolls R;'}wherein:{'b': 1', '2', '3', '1', '2', '3, 'the groups of the first rolls R and the second rolls R include a plurality of common rolls R, both of the first and second belts B, B being wound on the common rolls R{'b': 3', '1', '2', '3, 'a pass line for conveying the thermoplastic film F is formed in parts of both the first and second belts B, B, the parts being where the first and second belts are wound on the common rolls R and in contact with each other via the thermoplastic film F;'}{'b': 1', '1', '3, 'the discharge port TO of the discharger T is so provided that the molten resin reaches one first roll R of the group of first rolls R, on a side further upstream than the pass line ; and'}{'b': 3', '1, 'the common rolls R include a cooling roll for cooling and solidifying the molten resin discharged from the discharge port TO and having reached the one first roll R.'}21. The production apparatus according to claim 1 , wherein the one first roll R is the cooling roll.3111. The production apparatus ...
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