Patent ID: 6500514
Filing Date: 2002-12-31
Classification: B32B,Y10S,Y10T

Abstract:
A film structure comprising:a barrier layer comprising ethylene vinyl alcohol copolymer; first adhesive material encapsulating said barrier layer and forming first and second adhesive layers disposed on opposite surfaces of said barrier layer wherein said first adhesive material is selected from the group consisting of acid terpolymer, polyolefin having maleic anhydride grafted thereto, and polyamide; a third adhesive layer disposed adjacent to said first adhesive layer wherein said third adhesive layer comprises a polyethylene or polyethylene copolymer; a fourth adhesive layer disposed adjacent to said second adhesive layer wherein said fourth adhesive layer comprises a polyethylene or polyethylene copolymer; a heat sealant layer comprising ethylene vinyl acetate copolymer disposed adjacent to said third adhesive layer; and an outer layer comprising polyester wherein said barrier layer and first, second, third and fourth adhesive layers are extrusion laminated to said outer layer.