| 摘要 |
PURPOSE:To bond a polar group-containing thermoplastic resin film to an ethylene/unsaturated ester copolymer film without using any adhesive, by subjecting the bonding surface of each film to corona discharge treatment and heating each surface to a specified temperature. CONSTITUTION:The bonding surface of each of a polar group-containing thermoplastic resin film (A) (e.g., polyester film) and an ethylene/unsaturated ester copolymer film (e.g., ethylene/vinyl acetate copolymer film) which is a copolymer (B) of ethylene with a vinyl ester or an unsaturated carboxylic acid produced by a high-pressure radical polymerization process is subjected to corona discharge treatment, and components A and B are bonded together by heating at a temperature of from the m.p. of component B to the m.p. of component A. |
