| 摘要 |
Disclosed is a light reflector formed of a biaxially-stretched film which contains a thermoplastic resin and a filler and has an opacity of at least 95%, a whiteness of at least 90%, a reflectance R0 of at least 92%, and an areal draw ratio of from 22 to 80 times, wherein the color difference DELTA EH, after irradiated with a metal halide lamp spaced from the light reflector by 10 cm under an environmental condition of 83 DEG C and a relative humidity of 50% and at an intensity of radiation of 90 mW/cm<2> for 10 hours, is at most 10. The reflector is free from the trouble of yellowing as in white polyester films heretofore used in reflectors and is stable against color change for a long period of time. <IMAGE> |
