Multi-layer films

Stock material or miscellaneous articles – Composite – Of polyamide

Patent

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Details

4284755, 4284761, 4284763, 4284769, 428910, B32B 2732, B32B 2734

Patent

active

055629962

ABSTRACT:
The invention provides a multi-layer film having 1 to 4 polyamide layers, characterized in that at least one polyamide layer comprises about 50 to about 95% by weight of a crystalline polyamide and about 50 to about 5% by weight of an amorphous polyamide and that the multi-layer film is produced by stretching a flat film at least in the lateral direction; and a process for preparing the multi-layer film.

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patent: 4888223 (1989-12-01), Sugimoto et al.
patent: 4908272 (1990-03-01), Harada et al.
patent: 4963426 (1990-10-01), Nishimoto et al.
patent: 5053259 (1991-10-01), Vicik
patent: 5053281 (1991-10-01), Sakashita et al.
patent: 5055355 (1991-10-01), DeAntonis et al.
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