PACKAGING MATERIAL FOR MOLDING

摘要

A packaging material for molding controls the separation of a heat-resistant resin layer and comprises: a heat-resistant resin layer which is an outer layer; a metal foil layer; and a first adhesive layer formed between the heat-resistant resin layer and the metal foil layer. The first adhesive layer is composed of adhesive including a polyester resin and a two-component curable polyester urethane resin by a multifunctional isocyanate compound. The polyester resin uses dicarboxylic acid and dialcohol as raw materials. The dicarboxylic acid includes aliphatic carboxylic acid and aromatic carboxylic acid where the methylene number of a methylene chain is an even number. The content of the aromatic carboxylic acid is 40-80 mol% based on the total amount of dicarboxylic acid. The number-average molecular weight (Mn) of the polyester resin is 8000-25000, the weight-average molecular weight (Mw) is 15000-50000, and the ratio (Mw/Mn) is 1.3 to 2.5.