| 摘要 |
PROBLEM TO BE SOLVED: To provide a co-extruded composite film for deep drawing molding which is excellent in transparency and pinhole resistance and can be sterilized by boiling.SOLUTION: There is provided a co-extruded composite film for deep drawing molding in which an outermost layer is composed of a polyamide 6 resin layer, a polyamide 12 resin layer, or a copolymerization polyamide resin layer of polyamide 6 and polyamide 66, an intermediate layer is composed of a polyamide resin layer sandwiched by polyolefin-based adhesive resin layers or a polyamide resin layer sandwiched by polyolefin-based adhesive resin layers and an ethylene-vinyl acetate copolymer saponified substance layer, and an innermost layer is composed of a sealable resin layer, wherein a low-crystalline resin, which is a copolymer of ethylene and butene and has a melting point of 40 to 70°C, is contained in a ratio of 5 to 50% in at least one sealable resin layer and the sealable resin layer has a thickness of 20% or more of the total film thickness. |
