Patent ID: 8784958

Claim:
A multilayer film comprising: a first layer; a second layer provided on the first layer; a third layer provided on the second layer; a fourth layer provided on the third layer; and a fifth layer provided on the fourth layer; wherein the first layer comprises a propylene-ethylene random copolymer having a melt flow rate not less than 0.5 g/10 minutes and not greater than 10 g/10 minutes as measured at 230° C.; the second layer and the fourth layer each comprise a mixture of a propylene-ethylene random copolymer and an α-olefin elastomer; the third layer comprises a mixture of a polycycloolefin and a polyethylene; and the fifth layer comprises a mixture containing a polypropylene homopolymer having a melt flow rate not less than 0.5 g/10 minutes and not greater than 5 g/10 minutes as measured at 230° C. and a propylene-ethylene random copolymer having a melt flow rate not less than 0.5 g/10 minutes and not greater than 10 g/10 minutes as measured at 230° C. in a weight ratio of 90:10 to 10:90 and; the propylene-ethylene random copolymer in the second layer and the fourth layer is a mixture of a low-MFR propylene-ethylene random copolymer having a melt flow rate not less than 0.5 g/10 minutes and less than 5 g/10 minutes as measured at 230° C. and a high-MFR propylene-ethylene random copolymer having a melt flow rate not less than 5 g/10 minutes and not greater than 10 g/10 minutes as measured at 230° C.