| 摘要 |
PROBLEM TO BE SOLVED: To provide a white laminated polyester film excellent in printing properties and folding wrinkle resistance. SOLUTION: In a white laminated polyester film constituted by laminating a white polyester layer (A) to at least the single surface of a white polyester layer (B), the white polyester layers (A), (B) are fine void containing layers containing a thermoplastic resin incompatible with polyester and the void content and the number of voids of the layers (A), (B) satisfy formulae: VB=5-50(%), 0.1<=VA/VB<=0.9, nB=8×103-3×105/mm2 and 0.1<=nA/nB<=0.9 [wherein VA and VB are void contents of the white polyester layers (A), (B) and nA and nB are the numbers of voids of the white polyester layers (A), (B)]. |
