CASTING DEVICE, SOLUTION FILM FORMING EQUIPMENT AND CASTING METHOD

PROBLEM TO BE SOLVED: To manufacture films with different width efficiently. SOLUTION: A casting drum is rotated around a shaft, and the circumferential surface of the casting drum runs in an X direction. A casting die 30 discharges a dope to the circumferential surface, and thereby, a cast bead 40 is formed on the circumferential surface from an outlet of the casting die 30. A decompression chamber 36 reduces the pressure of a back side of the cast bead 40. At the decompression chamber 36, a sensor unit which detects the width of the cast bead 40 in the Y direction as width data, is arranged. A control part transfers an outer side sealing plate 71 in the Y direction, according to the width data detected by the sensor unit, so as to allow positioning of the outer side sealing plate 71 upstream from both end parts 40a, in the X direction, of the cast bead 40. When the cast bead 40 with a new width is formed, the control part transfers the outer side sealing plate 71 in the Y direction, according to the width data of a new width, so that the outer side sealing plate 71 is positioned upstream, in the X direction, from new both end parts 40a. COPYRIGHT: (C)2010,JPO&INPIT