| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for continuously manufacturing films having high flatness. <P>SOLUTION: The method for manufacturing films manufactures films by nipping and pressing a film-like molten material pushed from a die exit of a T die between a pair of rolls 21, 31, includes: a step of applying a first pressure preset by pressing the center part of the film-like molten material in the width direction at center part nipping pressure roll surface parts 22, 32 provided at the center position in a roll axial direction of the respective rolls 21, 31; and a step of applying a second pressure lower than the first pressure by pressing the end of the film-like molten material w2 in the width direction at both end part nipping pressure roll surface parts 23, 33 provided at both side positions in the roll axial direction of the respective rolls 21, 31. <P>COPYRIGHT: (C)2013,JPO&INPIT |
