MULTI-LAYER POLYPROPYLENE FILMS MULTI-LAYER POLYPROPYLENE FILMS

摘要

A polypropylene multi-layer film comprises a crystalline polypropylene substrate layer having laminated to at least one side thereof a sheet of a resin comprising: (A) 10-90% by weight of a propylene random copolymer which: (i) has a comonomer content of 4-15% by weight, (ii) has a Vicat softening point is 122 DEG C or less, and (iii) has a cold xylene-soluble portion content of 15% by weight or less; (B) 10-90% by weight of a copolymer of propylene and an alpha -olefin having four or more carbon atoms or a copolymer of propylene, an alpha -olefin having four or more carbon atoms and ethylene which: (i) has a content of the alpha -olefin having four or more carbon atoms of 8-35 mole%. (ii) has an ethylene content of 5 mole% or less, (iii) has a cold xylene-soluble portion content of 15-70% by weight, and (iv) has a DELTA haze of 5% or less; and (C) 0-15% by weight of a highly crystalline polypropylene having a melting point of 150 DEG C or more.