| 摘要 |
A sailor roll includes pressing rolls and a center roll provided between the pressing rolls the center roll configured to press a central region of a web. The portions of the web pressed down by the pressing rolls serve as a fold origin from which the web is folded. Each of the pressing rolls has a tapered shape in which the diameter becomes smaller toward the outer side in the cross direction CD. In other word, the pressing rolls respectively have tapered surfaces tapered toward a side region of the web. |
