| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a film by which the film formation even of a resin or a resin composition exhibiting no or low ductility can be carried out efficiently. SOLUTION: The method for producing the film by a solution-casting method comprises at least following steps (1) to (4): (1) a step for casting a resin solution on a base material; (2) a step for primarily drying the base material obtained in the step (1) to form the film of the resin solution, and winding the base material while carrying the film on the base material into a roll shape; (3) a step for unwinding the roll-shaped base material obtained in the step (2), cutting both edge parts at≥10 mm and <50 mm from the edges of the primarily dried film, and removing both the edge parts of the film; and (4) a step for secondarily drying the both edge parts-removed film obtained in the step (3), and winding the secondarily dried film into a roll shape. COPYRIGHT: (C)2007,JPO&INPIT |
