HEAT-SHRINKING LAMINATE FILM AND PROCESS TO PRODUCE THE SAME

摘要

A heat-shrinkable laminate film comprises a core layer of vinylidene chloride copolymer, surface layers of polyamide and an adhesive layer between the core and the surface layers. It has good impermeability, adheres tightly to meat or other goods packaged in it and has good physical properties and resists to elamination. The adhesive is preferably a graft copolymer of an ethylenically unsaturated carboxylic acid or anhydride with a copolymer of ethylene and a vinyl carboxylate or acrylic ester, a metallic derivative thereof, or a thermoplastic polyurethane.