| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing industrially at high speed, a plastic film excellent in thickness uniformity, capable of producing stably a cast sheet having uniform crystallization even when a casting roll is operated at high speed, by maintaining stable pinning discharge at a low voltage by removing discharge interference which is characteristic to a belt-like blade electrode.SOLUTION: In a sheet cooling molding method in which a resin 2 formed by melt extrusion molding in a sheet shape from a die 1 is extruded along the surface of a rotary cooling roll 3, and allowed to adhere to the surface of the rotary cooling roll 3 by applying a high voltage to a blade-shaped discharge electrode 4, discharge is prevented from an upward end edge 4-2 on the farther side from the cooling roll 3 of the discharge electrode 4. |
