Patent ID: 11420430

Abstract:
It is provided that a polypropylene-based laminated film having high heat resistance and stiffness. A polypropylene-based laminated film comprising: a base layer (A) that is formed of a polypropylene-based resin satisfying following conditions 1) to 4) and contains an antifogging agent; and a heat seal layer (B) formed on one or both surfaces of the base layer (A) and formed of a polyolefin-based resin, wherein a lower limit of a plane orientation coefficient of the film is 0.0125, 1) a lower-limit mesopentad fraction is 96%, 2) an upper-limit amount of a copolymerization monomer other than propylene is 0.1 mol %, 3) mass average molecular weight (Mw)/number average molecular weight (Mn) is 3.0 or more and 5.4 or less, and 4) a melt flow rate (MFR) measured at 230° C. and 2.16 kgf is 6.2 g/10 min or more and 9.0 g/10 min or less.