| 摘要 |
A coreless toilet paper roll having a center hole with alternate radial corners and inwardly bulged portions is manufactured by winding toilet paper on a winding shaft having a polygonal or gear-shaped section to form a roll on the winding shaft and then extracting the winding shaft from the rod. The center hole produced in this way is rigid and safe from collapse. The corners or gear teeth of the winding shaft may be arranged helically on the winding shaft to avoid noise during the winding. The toilet paper may be moistened at the outset of winding to provide a more rigid center hole. |
