| 摘要 |
The invention concerns a roll (12) comprising two superposed webs (6, 7) of material one (6) of which is formed with transverse ridges (10). At the ridge bases and tops are formed indentations (22). The other web (7) is provided with ribs (27) which are positioned in nesting relationship in the indentations, whereby the webs are secured to one another. The invention likewise concerns a method and a machine for manufacturing rolls of this kind. |
