| abstract |
PROBLEM TO BE SOLVED: To provide a polypropylene film for a light reflecting plate having characteristics such as high porosity, whiteness, optical density, light reflectance, mechanical strength and slipperiness and low heat shrinkage. SOLUTION: A polypropylene for a light reflecting plate having a substantially non-nucleated void, a porosity of 25 to 75%, a whiteness of 70% or more, and a light reflectance of 80% or more at a wavelength of 560 nm. the film. Furthermore, this polypropylene film is used as a core layer (A), and a laminated film obtained by laminating a skin layer (B) of a polypropylene resin having a porosity of 0.1% or more and less than 25% on at least one surface thereof, (B) A laminated polypropylene film for a light reflector having a surface whiteness of 70% or more and a light reflectance at a wavelength of 560 nm of 80% or more. [Effect] There is provided a polypropylene film for a light reflecting plate, which is a bright surface light source excellent in illumination efficiency and excellent in workability, and suitable as a reflecting plate or a reflector. [Selection figure] None |