Patent ID: 6447899
Filing Date: 2002-09-10
Classification: B32B,C08J,C08L,Y10T

Abstract:
A multi-layer film comprising:(a) a substrate layer of a thermoplastic polymer film having opposed first and second surfaces; and (b) a heat sealable layer associated with the first surface of the substrate, the heat sealable layer comprising: (i) from 5 to 60% by weight of a first polymer, which is an amorphous acrylic polymer having a glass transition temperature in the range of from 40 to 120Â° C. and a weight average molecular weight in the range of from 20,000 to 60,000; and (ii) from 40 to 95% by weight of a second polymer, which is a copolymer of a C2-C4 olefinically unsaturated hydrocarbon and an olefinically unsaturated carboxylic acid.