GAS BARRIER COMPOSITE FILM FOR HYDROTHERMALLY PROCESSABLE PACKAGE AND PACKAGING BAG OBTAINED BY USING SAME

摘要

Disclosed is a gas barrier composite film for hydrothermally processable packages which is characterized in that at least one gas barrier layer containing a gas barrier resin and an inorganic lamellar compound is interposed between a base film layer and a sealing material layer, and an adhesive layer is formed on both sides of the gas barrier layer by applying an adhesive composition which contains a base material mainly containing a polyurethane resin having at least one functional group selected from the group consisting of an amino group, a hydroxyl group and a carboxyl group, an isocyanate curing agent and an epoxy curing agent at the following functional group ratio: I/P = 0.3-30.0 E/P = 1.5-25.0 (wherein P represents the total number of moles of primary and secondary amino groups, hydroxyl groups and carboxyl groups contained in the base material, I represents the number of moles of isocyanate groups contained in the isocyanate curing agent, and E represents the number of moles of epoxy groups contained in the epoxy curing agent).