Patent ID: 6745797
Filing Date: 2004-06-08
Classification: D21F,Y10T

Abstract:
A triple layer papermaker's fabric, comprising:a set of top machine direction yarns; a set of top cross machine direction yarns interwoven with said 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 said bottom machine direction yarns to form a bottom fabric layer; a plurality of stitching yarns interwoven with said top and bottom fabric layers; wherein a pair of first and second stitching yarns is positioned between adjacent pairs of top cross machine direction yarns, said first and second stitching yarns of each pair being interwoven with said top and bottom machine direction yarns such that, as a fiber support portion of said first stitching yarn is interweaving with said top machine direction yarns, a binding portion of said second stitching yarn is positioned below said top machine direction yarns, and such that as a fiber support portion of said second stitching yarn is interweaving with said top machine direction yarns, a binding portion of said first stitching yarn is positioned below said top machine direction yarns, and such that said first and second stitching yarns cross each other as they pass below a transitional top machine direction yarn, and such that each of said binding portions of said first and second stitching yarns passes below at least one of said bottom machine direction yarns; wherein said top machine direction yarns, said top cross machine direction yarns, and said fiber support portions of said stitching yarns interweave to form a plain weave surface; and wherein said top machine direction yarns have a first diameter, said bottom machine direction yarns have a second diameter, and said top cross machine direction yarns have a third diameter, and a ratio of said first diameter and said second diameter is between about 0.75 and 0.95, and a ratio between said first diameter and said third diameter is between about 0.8 and 1.1.