| 摘要 |
PROBLEM TO BE SOLVED: To provide a biaxially stretched laminated polyester film which shows very little defects of unevenness of a haze, unevenness of a stretch and the like and has an excellent optical property by preventing whitening without spoiling thermal resistance. SOLUTION: The biaxially stretched laminated polyester film includes at least two layers wherein at least one layer (layer A) of the outermost layers composing the film includes a polyester material having a carboxyl group content of not more than 29 equivalent/ton. COPYRIGHT: (C)2010,JPO&INPIT |
