| 摘要 |
PURPOSE:To obtain the title film excellent as a material for transcription by melt-extruding a polyester resin composition comprising a PP resin and a third component and solidifying the extrudate by rapid cooling into an unoriented film and biaxially orienting this film so as to give it a Japanese paper-like pattern. CONSTITUTION:A polyester resin composition comprising 2-40wt.% PP resin of a melt flow index of 0.5-50 and a third component (e.g. white pigment such as CaCO3 or BaSO4), e.g. a composition of a CaCO3, PP and polyethylene terephthalate of a weight ratio of 8.6:20:71.4, is melt-extruded, and the extrudate is solidified by rapid cooling into an unoriented film, which is biaxially oriented so as to give it a Japanese paper-like pattern and optionally heat-set. In this way, a white surface-roughened polyester film having a Japanese paper-like pattern and most suited as a material for transcription can be obtained. |
