STRETCHED MULTI-LAYER FILMS HAVING AT LEAST ONE POLYAMIDE LAYER OF 50-95 CRYSTALLINE POLYAMIDE AND 5-50 AMORPHOUS POLYAMIDE

摘要

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.