Use of a transfer belt for a soft tissue paper machine
US6743339B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/901
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Use of an essentially impermeable transfer belt (16) for a soft tissue paper machine for conducting a soft tissue web (1) through a shoe press nip in the press section of the paper machine, and from the shoe press nip to a Yankee cylinder (5) in the dryer section of the paper machine in a closed draw. The Yankee cylinder forms, together with a transfer means (17), a transfer nip for transferring the soft tissue web from the transfer belt to the Yankee cylinder. The transfer belt comprises a carrier and an elastically compressible polymer layer on its side facing the web, the polymer layer having a hardness between 50 and 97 Shore A and having a web-contacting surface which has a pressure-sensitive, resettable degree of roughness, the web-contacting surface having a degree of roughness in a non-compressed state of Rz=2-80 &mgr;m, measured according to ISO 4287, Part I, and a lower degree of roughness of Rz=0-20 &mgr;m when the polymer layer is compressed by a linear load of 20-220 kN/m applied to the essentially impermeable transfer belt as measured in a non-extended press nip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.