LAMINATED FILM, AND POUCH FOR PETORT USING THE FILM

摘要

PROBLEM TO BE SOLVED: To make a material which is excellent in an easy tearing property and a straight line cut property and the seal surface of which is excellent in heat fusion bond resistance and impact strength and suitable for a pouch for packaging an article which conducts retort treatment by drawing a base material biaxially and molding a sealant material by an extrusion molding method. SOLUTION: A base material 2 uses a film in which a rolled film of a nylon resin is biaxially oriented. A sealant material is an extrusion-molded film which has at least one layer of a linear ethylene-α-olefin copolymer layer with density of 0.930-0.945g/cm<3> . The base material 2 and the sealant material 3 are laminated so that the layer which is composed of the linear ethylene-α-olefin copolymer with density of 0.930-0.945g/cm<3> becomes one surface layer. The sealant material must be excellent in an easy tearing property and a straight line cut property and has appropriate impact strength and heat fusion bond resistance.