| 摘要 |
PURPOSE:To obtain the excellent laminating properties with a metal, in a biaxially stretched laminated film consisting of two or more layers containing a specific polyester layer A containing a specific amt. of white pigment and a specific polyester layer B which may contain a specific amt. of white pigment, by respectively constituting a surface layer and a metal lamlnating layer of the polyester layers A, B. CONSTITUTION:A polyester layer A has an m.p. of 220-280 deg.C and the content (Wa) of white pigment thereof is set to 5-30wt.%. A polyester layer B has an m.p. of 170-220 deg.C, and the content (Wb) of white pigment thereof is set to 0-10wt.%. In this case, Wb<Wa is necessary. A laminated white polyester film is composed of a biaxially stretched film consisting of two or more layers containing the polyester layers A, B and the thickness of the polyester layer B is set to 1.5-25mum. In this laminated white polyester film, the polyester layer B is laminated to a metal plate as a laminating layer and the polyester layer A is used as a surface layer to which a printing layer is applied. |
