| 摘要 |
To form a film or sheet relatively thin and needing a high degree of precision in thickness, such as for an optical use, while suppressing temperature fluctuations at one side opposite to the other side in contact with an outer peripheral surface of a roll ( 11 ), an outer peripheral surface of the roll is covered, with a necessary gap (t) left, by a windshield ( 20 ) of a double-layered structure having a thermally insulating property. |
