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Title:
MULTILAYERED STRETCHED POLYAMIDE FILM
Document Type and Number:
WIPO Patent Application WO/2021/065257
Kind Code:
A1
Abstract:
A multilayered stretched polyamide film which is a biaxially stretched film composed of three layers consisting of an easy-to-bond layer (B layer), a base layer (A layer), and an easy-to-slip layer (C layer) in this order and each comprising a polyamide resin composition, the film being characterized by satisfying the following (1) to (4). (1) The A layer comprises 50-90 mass% polyamide-6 and 10-50 mass% polyamide-6 copolymer having a comonomer component content of 3-35 mass%, (2) the B layer comprises 60-100 mass% polyamide-6 copolymer having a comonomer component content of 3-35 mass% and 0-40 mass% polyamide-6, (3) the C layer comprises 70 mass% or more polyamide-6 and 0.05-1 mass% fine particles having an average particle diameter of 0.1-10 μm, (4) the biaxially stretched film has an MD tensile rupture strength and MD and TD tensile rupture strengths of 150 MPa or greater each, and (5) the biaxially stretched film has a lamination strength of 3.3 N/15 mm or higher.

Inventors:
GOTO TAKAMICHI (JP)
ENDO TAKURO (JP)
Application Number:
PCT/JP2020/032243
Publication Date:
April 08, 2021
Filing Date:
August 26, 2020
Export Citation:
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Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/34; B29C55/12; B65D65/40
Domestic Patent References:
WO2002016133A12002-02-28
Foreign References:
JP2002029014A2002-01-29
JP2000309076A2000-11-07
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