Coextruded adhesive film to bond non-polar soles to polar uppers

摘要

A laminated adhesive film for bonding non-polar materials to polar materials in footwear assemblies which comprises an inner thermoplastic polyurethane based adhesive adapted to bond to a polar material and an outer ethylene copolymer based adhesive adapted to bond to a non-polar material. The outer adhesive is interfaced with the inner adhesive.