Patent ID: 7638202
Filing Date: 2009-12-29
Classification: B32B,C08J,C08L,Y10T

Abstract:
1. A stretched polyamide film comprising at least one gas-barrier stretched layer which is made of a mixed resin Z containing polyamide resin X and modified polyester-based elastomer Y, and containing from 90 to 98% by weight of the polyamide resin X based on a total weight of the polyamide resin X and the modified polyester-based elastomer Y, and from 10 to 2% by weight of the modified polyester-based elastomer Y based on a total weight of the polyamide resin X and the modified polyester-based elastomer Y, the polyamide resin X being constituted by a diamine constitutional unit comprising 70 mol % or more of m-xylylenediamine unit, of total diamine constitutional units, and a dicarboxylic acid constitutional unit comprising 70 mol % or more of a C 6-12 α, ω-aliphatic dicarboxylic acid unit, of total dicarboxylic acid constitutional units, and the modified polyester-based elastomer Y being graft-modified with an ethylenically unsaturated carboxylic acid, wherein said gas-barrier stretched layer has a thickness of 5-50 μm.