Biaxially oriented polypropylene film

Abstract

Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a half width of a peak derived from an oriented crystal in a width direction in azimuth dependence of a (110) plane of polypropylene α-type crystal obtained by wide-angle X-ray diffraction measurement is not larger than 27°, and a tan δ area in the width direction obtained from a ratio (E′E″) of a storage elastic modulus (E′) to a loss elastic modulus (E″) obtained by dynamic viscoelasticity measurement is not smaller than 0.2 and not larger than 0.4.

Dependencies are inferred from the claim text.