Patent ID: 7243687
Filing Date: 2007-07-17
Classification: D21F

Abstract:
1. A triple layer papermaker's fabric, comprising: a set of top machine direction yarns; a set of top cross machine direction yarns interwoven with the top machine direction yarns to form a top fabric layer; a set of bottom machine direction yarns; a set of bottom cross machine direction yarns interwoven with the bottom machine direction yarns to form a bottom fabric layer; wherein the bottom fabric layer is stitched to the top fabric layer via a set of stitching yarn pairs; wherein the top machine direction yarns and the top cross machine direction yarns are interwoven in a series of repeat units and the bottom machine direction yarns and the bottom cross machine direction yarns are interwoven in a series of corresponding repeat units; and wherein each repeat unit has twice the number of bottom machine direction yarns as the number of top machine direction yarns; and wherein the set of stitching yarns comprises pairs of first and second stitching yarns positioned between pairs of adjacent top cross machine direction yarns; and wherein the pairs of first and second stitching yarns are interwoven with the top machine direction yarns and the bottom machine direction such that the top cross machine direction yarns and the first and second stitching yarns form a plain weave pattern with the top machine direction yarns.