Molding packaging material and battery case

摘要

Provided is a molding packaging material that can have an increased use life, can suppress a decrease over time in inter-layer lamination strength, and can have superior molding properties in extrusion molding, draw forming, and the like. The laminate molding packaging material contains: an outside substrate layer (2) comprising a heat resistant resin; an inside sealant layer (3) comprising a thermoplastic resin; and a metal foil provided between the two layers as a barrier layer (4). A matte coat layer (6) comprising a heat resistant resin coating film containing a dispersion of inorganic or organic solid microparticles is formed on the outer surface of the outside substrate layer (2), and the gloss value of the surface thereof is suppressed to no greater than 30%.

主权项

1. A method for manufacturing a molding packaging material, comprising:
a step of subjecting at least one surface of a metallic foil for a barrier layer to chemical conversion treatment; a step of bonding a biaxially oriented polyamide film to the other surface of the metallic foil with an outside adhesive to form an outside substrate layer; a step of applying a resin composition in which 0.1 wt % to 60 wt % of a dispersion of inorganic and/or organic solid fine particles having an average particle diameter of 1 μm to 10 μm is contained in a two component curing type heat-resistant resin to a surface of the outside substrate layer, and then drying to form a matte coat layer whose gloss value is controlled to be 1 to 30%; a step of forming an inside adhesion resin layer having adhesiveness to both the metallic foil as the barrier layer and a resin of an inside sealant layer described later on one chemical conversion-treated surface of the metallic foil; a step of laminating and forming the sealant layer containing a thermoplastic resin on the inside adhesion resin layer; and a step of heat treating a laminate obtained by the steps above with a heat roll heated to 130° C. to 220° C. in such a manner that the outside substrate layer is on the side of the heat roll.