| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a film in which, even when film forming is carried out for a long time, the pinching/pressurizing position of a molten material is not changed and the optical characteristics of the film are stabilized, and to provide the film produced by the method. <P>SOLUTION: A composition containing a thermoplastic resin is melt-extruded from a die 16, and the melt-extruded molten material 12A is pinched/pressurized continuously between a touch roll 28 and a casting roll 18 and molded in the shape of a film. While a molten material 12A pinching/pressurizing position is adjust to be constant by moving a frame 50, the molten material 12A is pinched/pressurized by the touch roll 28 and the casting roll 18. <P>COPYRIGHT: (C)2011,JPO&INPIT |
