Base fabric structures for seamed wet press felts
US4892781A · kind A · utility
18Cited by
26References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3724
- 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 includes 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.