abstract |
The present invention provides a method for producing a thermoplastic film having a small distribution of retardation and excellent optical characteristics. A thermoplastic film is obtained by extruding molten resin from a die into a sheet shape, cooling and solidifying the extruded sheet on a rotating cooling drum, peeling the cellulose acylate film from the cooling drum, and drawing the film by a draw roller. In the method of manufacturing the tension, the tension of the cellulose acylate film in the take-up roller is set to 0.02kgf / mm 2 or less. n n Thermoplastic film |