Patent ID: 8512828
Filing Date: 2013-08-20
Classification: B32B,B41M,Y10T

Abstract:
1. A biaxially oriented white polypropylene film containing a core layer (layer A) and a skin layer (layer B), wherein said layer B is laminated at least on one surface of said layer A, said layer A contains a polypropylene resin having β-crystal activity and 1 to 20 mass % particle (a) having an average dispersed diameter of 60 to 400 nm, and wherein, said layer B contains a polypropylene resin and 0.05 to 5 mass % particle (b) having an average dispersed diameter of 1 to 4 μm, wherein a light reflectance of said film at a wavelength of 560 nm is 90% or more.