Needled press felt
US4882217A · kind A · utility
7Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Nov 9, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needled press felt, i.e. a felt which is intended to be used in the press section of a papermaking machine. The batt part of the felt comprises at least two kinds of fiber one of which consists of fibers having a diameter size 0.010 mm or less. These fibers are removed either successively or intermittently during the service of the felt in the press section, whereas the rest of the fibers in the batt part of the felt, i.e. the fibers having a larger diameter than those of the first kind, remain in the batt part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.