| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated biaxial oriented white polypropylene film which not only has a high reflection factor as a reflection film for a surface light source of a liquid crystal screen of a mobile information instrument, but shows a higher reflection factor and higher luminance than the conventional white film having the same thickness, hardly causes unevenness of the luminance, and can be thinned. Ž<P>SOLUTION: The laminated biaxial oriented white polypropylene film is prepared by mounting a skin layer (layer B) showing surface glossiness of not more than 50% at an angle of 60 degrees on at least one surface of a core layer (layer A) composed of a polypropylene resin having a β-crystalline-forming function of 30 to 90% as a major constituent. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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