| 摘要 |
PURPOSE:To damage hardly a film on a high speed process and to make decrease in an image quality less when a dubbing is performed by specifying the mean particle diameter and the content of a particle and the product of a thickness deviation of a film surface in the MD direction and a thickness deviation in the TD direction. CONSTITUTION:The title film is a biaxially oriented thermoplastic resin film with a thickness of 0.005-3 mum wherein a thermoplastic resin A contg. a particle is a main ingredient and the mean particle diameter and the content of the particle are respectively 0.1-10-fold of the film thickness and 0.5-50 wt.% and the product of a thickness deviation (%) of a film surface in the MD direction and a thickness deviation (%) thereof in the TD direction is 750 or smaller. As the thermoplastic resin A, when a polyester, above all, a polyester contg. a structural unit selected from ethylene terephthalate, ethylene alpha, beta-bis(2- chlorophenoxy)ethane-4,4-dicarboxylate and ethylene 2,6-naphthalate units as a main constituting ingredient is used, scratch resistance and dubbing resistance become better and when it is crystalline or optically anisotropic under molten state, scratch resistance and dubbing resistance become better. |
