Patent ID: 6905744

Claim:
A multilayered film comprising five layers, wherein: a first layer and a fifth layer are made of (A) an ethylene.α-olefin copolymer having a density of 0.930 to 0.950 g/cm 3 ; a second layer is made of: (B) a mixed resin comprising 30 to 60% by weight of an ethylene α-olefin copolymer having a density of 0.910 to 0.930 g/cm 3 , 35 to 65% by weight of an ethylene.α-olefin elastomer having a density of 0.860 to 0.900 g/cm 3 and 1 to 10% by weight of a high-density polyethylene having a density of 0.955 to 0.970 g/cm 3 ; or (C) a mixed resin comprising 35 to 55% by weight of a polypropylene having a density of 0.900 to 0.930 g/cm 3 , 40 to 60% by weight of an ethylene.α-olefin elastomer having a density of 0.860 to 0.900 g/cm 3 and 2 to 8% by weight of a high-density polyethylene having a density of 0.955 to 0.970 g/cm 3 ; a third layer is made of: the ethylene.α-olefin copolymer (A); or (D) a mixed resin comprising 40 to 60% by weight of a polypropylene having a density of 0.900 to 0.930 g/cm 3 and 40 to 60% by weight of an ethylene.α-olefin elastomer having a density of 0.860 to 0.900 g/cm 3 ; and a fourth layer is made of: (E) a mixed resin comprising 35 to 55% by weight of an isotactic polypropylene having a melt flow rate (MFR) of 1 to 40 g/10 minutes (230° C.) and a melting point of 140 to 170° C., 40 to 60% of an ethylene.1 butene elastomer having a density of 0.860 to 0.900 g/cm 3 and 2 to 8% of a high-density polyethylene having a density of 0.955 to 0.970 g/km 3 .