Casting drum device and method for manufacturing synthetic resin film / sheet using this casting drum device

摘要

PROBLEM TO BE SOLVED: To maintain a uniform film thickness of a synthetic resin film / sheet even when the casting drum is enlarged, and to obtain physical properties / characteristics required for a material resin of the synthetic resin film / sheet and a synthetic resin film / sheet. Accordingly, a casting drum device capable of setting and controlling the surface temperature of the casting drum with good responsiveness and fine detail, and a method for manufacturing a synthetic resin film / sheet using the casting drum device are provided. SOLUTION: In a casting drum device 1, 1) a bellche element 3 is used as a means for cooling and heating a casting drum 2, and 2) a direct current supplied to a plurality of bellche elements according to the rotation phase of the casting drum. Control the amount and direction of current. Further, the synthetic resin film sheet 7 is manufactured by using the above-mentioned casting drum device. [Selection diagram] Fig. 2