Papermaking apparatus having a seamed wet press felt
US4824525A · kind A · utility
40Cited by
26References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/90
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A papermaker's wet press felt is formed from a flat woven base fabric having the crimped warp yarns of the fabric weave oriented in the lengthwise machine running direction. The warp yarns are formed into seaming loops at the ends of the base fabric which are joined so as to form an endless felt. At least one layer of non-woven batt material is affixed to the base fabric, typically by needling. The flat woven base fabric including from at least 30 to 50 machine direction, crimped warp yarns per inch for a single layer weave and at least 60 to 100 machine direction, crimped warp yarns per inch for a multi-layer weave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.