Multilayer papermakers fabric
US6276402A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3211
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A "triple layer" fabric having upper and lower systems of interwoven yarns interconnected into an integral fabric by a system of stitching yarns. Preferably, the fabric is a forming fabric having upper and lower layers of uniformly sized machine direction (MD) yarns. Upper and lower layer cross machine direction (CMD) yarns weave, respectively, with the upper and lower MD yarns to define the upper and lower yarn systems. The lower layer CMD yarns are preferably larger in diameter than the MD yarns. The lower layer CMD yarns weave in a repeat pattern with respect to the lower layer MD yarns such that the lower layer CMD yarns weave in a repeat defined by floats under groups of at least three lower MD yarns and over pairs of adjacent lower MD yarns. Each lower layer MD yarn is in at least two different pairs relative to at least two different lower layer CMD yarns within the repeat which maintains a substantial degree of stacking of the lower layer MD yarns below respective upper layer MD yarns. In an alternative embodiment the stitching yarns are incorporated in the upper layer as upper layer MD yarns where less than one half of the upper layer MD yarns also serve as stitching yarns…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.