| 摘要 |
PURPOSE:To form the sheet with luster on both sides by means of regulating the cooling capacity by a cooling roll, while moving the second roll, a water tank, an air nozzle, a guide roll etc. to the circumference of the first cooling roll, and changing the holding angle of the sheet. CONSTITUTION:The sheet 23 extruded from a die 21 is moved from the first cooling roll 26 to the second cooling roll 28 through a nip point (a). A surface A and a surface B are cooled and said both surfaces are polished. By moving the second cooling roll 28, a water tank 29, an air nozzle 99, a guide roll 64 etc. to the circumference of the first roll 26, the holding angle of the sheet 23 to the rolls 26, 28 is regulated corresponding to the change of the production output and thickness of the sheet, thereby being able to adjust the cooling capacity by the rolls 26, 28. |
