Biaxially oriented polypropylene film, metal film laminated film, and film capacitor

Abstract

The present invention aims to provide a biaxially oriented polypropylene film that can achieve high voltage resistance when used as a dielectric in film capacitors and has excellent productivity. [Solution] When the temperature is raised from 25°C to 145°C at a rate of 3°C / min, the degree of crystallinity at 100°C is C 100 The degree of crystallinity at 130°C is C 130 In that case, 100 × C 130 / C 100 A biaxially oriented polypropylene film characterized in that the ratio is 91.5 or higher and 95.0 or lower.