Stretched polyamide films

Details Stretched polyamide films Stretched polyamide films

2006-09-21

2009-12-29

Mullis, Jeffrey C (Department: 1796)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S474700, C525S063000, C525S066000

Reexamination Certificate

active

07638202

ABSTRACT:
A stretched polyamide film including at least one stretched layer made of a mixed resin containing a polyamide resin and a modified polyester-based elastomer Y. The polyamide resin X is mainly constituted by m-xylylenediamine unit and C6-12α,ω-aliphatic dicarboxylic acid unit. The modified polyester-based elastomer is graft-modified with an ethylenically unsaturated carboxylic acid or its anhydride. Such stretched polyamide film is drastically improved in the flexibility, impact resistance and pin-hole resistance with little reduction in the gas-barrier properties while retaining an enough transparency to practical use.

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