| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflective sheet, which has high reflectivity with minimized anisotropy of total reflectivity by the incidence direction of light, and is further, reduced in weight. <P>SOLUTION: The reflective sheet comprises at least a surface layer portion and an inner layer portion. The surface layer portion includes at least 0.3-20 g/m<SP>2</SP>of an inorganic powder and a polyolefin resin (C), and the inner layer portion includes a polyolefin resin (A), and at least one resin (B), which is incompatible with the polyolefin resin (A) at temperatures at which the polyolefin resin (A) can be stretched. Furthermore, the following relation: (n<SB>1</SB>-n<SB>2</SB>)/n<SB>2</SB>≥0.20 (where n<SB>1</SB>represents the refractive index of the inorganic powder; n<SB>2</SB>represents the refractive index of the polyolefin resin (C)) and satisfies in the surface layer portion; and the inner layer portion is provided with a pore. <P>COPYRIGHT: (C)2010,JPO&INPIT |
