Methods employing an impermeable transfer belt in a papermaking machine
US8092651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2011 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.