CO-EXTRUDED COMPOSITE FILM FOR DEEP DRAWING MOLDING, BOTTOM MATERIAL FOR DEEP DRAWING MOLDING, AND DEEP DRAWING PACKAGING BODY

摘要

PROBLEM TO BE SOLVED: To provide a bottom material film for deep drawing, favorable in transparency and pinhole resistance of a packed article and capable of preventing curling of a sealed portion after boiling sterilization.SOLUTION: There is provided a co-extruded composite film for deep drawing molding having: a layer comprising a mixture of polypropylene-based polymer and styrene-based elastomer as an outermost layer; a layer comprising polyolefin-based resin as the layer adjacent to the outermost layer; at least one layer comprising polyamide resin as an intermediate layer; a layer comprising polyolefin-based resin as an innermost layer; and a layer comprising polyolefin-based resin as the layer adjacent to the innermost layer. There are also provided a bottom material for deep drawing molding molded by using the composite film for deep drawing, and a deep drawing packaging body having the bottom material for deep drawing molding.