Patent ID: 7959755
Filing Date: 2011-06-14
Classification: B29C,B29L,B32B,C08L,C09J

Abstract:
1. A method of manufacturing a thermal laminate by laminating an ethylene-based polymer film layer with a second substrate film layer through an adhesive resin layer without the use of a solvent, which comprises the steps of: providing an adhesive resin layer which forms functional groups at a surface thereof by infrared heating; integrating the adhesive resin layer with the ethylene-based polymer film layer; heating the adhesive resin layer with infrared rays in the presence of oxygen to form functional groups on the surface of the adhesive resin layer which contribute to adhesion; superimposing the second substrate film layer on the adhesive resin layer so that the second substrate film layer is directly in contact with the adhesive resin layer; and bonding the second substrate film layer to the adhesive resin layer through the application of pressure, wherein the adhesive resin layer is an ethylene-unsaturated carboxylic acid anhydride-unsaturated carboxylic acid ester copolymer and the second substrate film layer is a polyester or polyamide film or an aluminum foil and the heating of the adhesive resin layer with infrared rays is the sole heating step.