Method for calendering tissue paper
US6712930B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2003 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Tissue paper is calendered in at least one calendering nip. The tissue paper is calendered in at least one soft, long calendering nip. By belt calendering a high crêping effect is achieved when a so-called post-nip contact is used. With post-nip contact, the web and the belt are in contact with the thermo roll over a distance of 10-200 mm after the nip, whereby the belt tension presses the web against the surface of the thermo roll, and hereby the belt expands in the nip, and when it is then restored it will crêpe the paper. In this manner a soft tissue paper with maximum bulkiness is brought about. The belt tension used in the belt calender is 1-10 kN/m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.