Papermaker's pressure belt for extended nip presses
US4701368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3813
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A papermaker's pressure belt for extended nip presses, which comprises a belt base formed of a strong woven fabric having high dimensional stability, a squeezing layer to be in contact with a wet fibrous web on an extended nip press, having a large void volume and formed of a compressible elastic and porous or cellular material, such as fibrous batt, sponge or a foam resin, and formed on one side of the belt base, and an impermeable layer impermeable to oil, formed on the other side of the belt base. The squeezing layer facilitates the separation of the fibrous web from the pressure belt, while the impermeable layer inhibits the permeation of the lubricant applied to the acting surface of the pressure shoe of the extended nip press through the pressure belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.