Laminate structure and production of the same

Claim 1

A laminate structure comprising (a) a layer of a saponified product of an ethylene-vinyl acetate copolymer containing 20 to 55 mole % of ethylene and having a degree of saponification of at least 90 mole % and (B) a layer of hydrophobic thermoplastic resin, with (C) a bonding interlayer placed therebetween which comprises a composition of (X) a polymer of ethylene, an acrylic acid ester, and an ethylenically unsaturated carboxylic acid or anhydride thereof and (Y) a polymer of ethylene and an acrylic acid ester, said polymers (X) and (Y) being formulated so that the following formulas (I), (II), (III), and (IV) are satisfied: |Vx-Vy|≦0.15 (I) 0.10≦Vx·Wx+Vy·Wy≦0.45 (II) 0.03≦CxWx≦1 (III) 0.05≦Wx/Wy≦10 (IV) where: Vx: content (in weight fraction) of acrylic acid ester in polymer (X) Vy: content (in weight fraction) of acrylic acid ester in polymer (Y), Cx: content (in meq/g) of carboxyl group of ethylenically unsaturated carboxylic acid or anhydride thereof in polymer (X), Wx: quantity (in weight fraction) of polymer (X), and Wy: quantity (in weight fraction) of polymer (Y).