| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller device which prevents a diffusional permeable gas from intruding from the exterior while securing the uniformity of width direction temperature distribution in the roll body and prevents temperature rise of a peripheral structure (for example, a bearing etc.) of the roll body.SOLUTION: A roller device includes: a roll body 2 having a hollow part 2S hermetically sealed from outer air; a heat medium 3 sealed in the hollow part 2S of the roll body 2 in a decompressed manner; and an incompressible gas introduction path 4 which introduces an incompressible gas to the hollow part 2S of the roll body 2. |
