Warped stitched papermaker's forming fabric with fewer effective top MD yarns than bottom MD yarns
US7275566B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/0036
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A papermaking fabric includes a series of repeat units, each of the repeat units including: a set of top machine direction (MD) yarns; a set of top cross machine direction (CMD) yarns interwoven with the top MD yarns; a set of bottom MD yarns; a set of bottom CMD yarns interwoven with the bottom MD yarns; and a set of stitching yarns. The stitching yarns are disposed in pairs, at least one of the yarns of each of the stitching yarn pairs being interwoven with the top CMD yarns and the bottom CMD yarns, wherein when a first stitching yarn of a pair is interweaving with the top CMD yarns, a second stitching yarn of the pair is passing below the top CMD yarns, and when the second stitching yarn of the pair is interweaving with the top CMD yarns, the first stitching yarn of the pair is passing below the top CMD yarns, such that each stitching yarn pair forms a composite top MD yarn. The set of top MD yarns includes a first number of top MD yarns, the set of stitching yarns comprises a second number of composite top MD yarns, and the set of bottom MD yarns includes a third number of bottom MD yarns. The ratio of the sum of the first and second numbers to the third number is 2:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.