Patent ID: 6276402
Filing Date: 2001-08-21
Classification: D21F,Y10S,Y10T

Abstract:
A papermakers forming fabric comprising:an upper system of interwoven MD and CMD yarns which define a top, paper carrying surface of the fabric;a lower system of interwoven MD and CMD yarns which define a bottom, machine side surface of the fabric;selected upper system CMD yarns interweaving with MD yarns of both said upper and lower systems to define an integral fabric such that less than half of said upper system CMD yarns are selected yarns;said MD yarns of both said upper and lower systems having a uniform cross section of a common selected size;said lower system CMD yarns having a cross section size larger than said cross section size of said MD yarns; andsaid lower system CMD yarns woven in a repeat pattern with said lower system MD yarns such that:all said lower system CMD yarns only weave over pairs of adjacent lower system MD yarns and only weave in floats under groups of at least three lower system MD yarns within the repeat pattern, andeach of said lower system MD yarns weaves under at least two different lower system CMD yarns in the repeat pattern such that each lower system MD yarn is paired with a preceding adjacent lower system MD yarn when it weaves under one of said lower system CMD yarns and is paired with a succeeding adjacent lower system MD yarn when it weaves under another of lower system CMD yarn.