| 摘要 |
PROBLEM TO BE SOLVED: To provide a film for pasting on a window, which suppresses precipitation of a colorant on a surface of the film during a film production process and has a transparent feeling and an excellent light shielding property.SOLUTION: There is provided a biaxially oriented laminated polyester film for pasting on a window which is a polyester film having an intermediate layer containing a colorant and an outermost layer each containing no colorant and of a thickness of 3 to 21μm respectively on both surfaces, wherein when the thickness ratio (A/B) of the thickness (A: when the thickness of both outermost layers is different, the thinner thickness is used) of the outermost layer to the thickness (B) of the intermediate layer is 0.03 to 0.3, the visible light transmittance of a solution obtained by extracting the colorant precipitated on the film surface with a DMF solvent is 90% or more, the film haze is 5% or less, and a sum of absolute values of a heat shrinkage rate in a longitudinal direction of the film after heat treatment at 180°C for 5 minutes and a heat shrinkage rate in a lateral direction is 3.0 to 6.0%. |
