Patent ID: 8840920

Claim:
A method of making a composite structure, the method comprising in sequence: (a) applying to a surface of a substrate a liquid mixture comprising a diluent, an ethylene-vinyl acetate component, and a nonpolar polymer; and (b) removing the diluent to provide a coating containing between 1 and 15 wt % of vinyl acetate repeating units, provided that the coating does not include any drug; wherein the nonpolar polymer comprises an ABA block copolymer wherein the A segments of the block copolymer are styrenic segments and wherein the B segments of the block copolymer are saturated aliphatic segments; wherein the substrate comprises a polyester film layer and wherein the surface of the substrate is a surface of the polyester film layer or a surface of a primer layer residing on a surface of the polyester film layer, wherein the primer layer comprises a polymer selected from the group consisting of polyacrylates, ethylene-acrylic acid copolymers, amorphous polyesters, polyethylenimines, and polyvinylidene chlorides; and wherein the substrate is not a removable release liner.