| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film for in-mold transfer superior in molding property and transferring property, specially superior in smoothness, deep drawing property, and following property to the surface shapes of articles to which films are to be transferred. SOLUTION: The polyester film for in-mold transfer which is a co-extruded laminate film comprising at least three polyester layers of layer A, layer B, and layer C; is characterised in that the polyester constituting the layer B being an intermediate layer is a co-polymerized polyester resin containing a dicarboxylic acid component, an aliphatic or an alicyclic diol component, and a polyalkylene ether glycol component as main constituting components; and the ratio of the polyalkylene ether glycol component in the co-polymerized polyester resin is 10-35 wt.%; the thickness ratio of the layer B accounting for the thickness of whole film is 60-95%; and the tensile breaking elongation of the film in the longitudinal and lateral directions are 120-250%. COPYRIGHT: (C)2006,JPO&NCIPI
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