Hybrid warp exchange triple layer forming fabric

Abstract

A fabric for papermaking usable in the forming section of a paper making machine, having a first weft system, a second weft system and a third weft system; and a plurality of warp systems, each warp system having at least one warp yarn, each warp yarn binding with one of the first weft system, the third weft system, the first and second weft systems, and the second and third weft systems; wherein a first warp system is an exchange warp system.

1 . A fabric for papermaking comprising: 
 a first weft system, a second weft system and a third weft system; and    a plurality of warp systems, each warp system having at least one warp yarn, each warp yarn binding with one of the first weft system, the third weft system, the first and second weft systems, and the second and third weft systems;    wherein a first warp system is an exchange warp system.    
   
   
       2 . The fabric for papermaking of  claim 1 , wherein the first weft system is one of a paper side weft, a wear side weft and an intermediate weft.  
   
   
       3 . The fabric for papermaking of  claim 1 , wherein each warp system is independent.  
   
   
       4 . The fabric for papermaking of  claim 1 , wherein mesh density of the first weft system and the second weft system is independent from a mesh density of the third weft system and the second weft system.  
   
   
       5 . The fabric for papermaking of  claim 1 , wherein the fabric is fabricated using a plurality of shafts ranging from 4 to 56.  
   
   
       6 . The fabric for papermaking of  claim 1 , wherein the first weft system has a first yarn having a first diameter, the second weft system has a second yarn having a second diameter and the third weft system has a third yarn having a third diameter.  
   
   
       7 . The fabric for papermaking of  claim 1 , wherein the at least one warp yarn has a fourth diameter.  
   
   
       8 . The fabric for papermaking of  claim 1 , wherein the yarn is one of a mono filament and a twisted pair.  
   
   
       9 . The fabric for papermaking of  claim 1 , wherein warp repeats range from 2 to 112.  
   
   
       10 . The fabric for papermaking of  claim 1 , wherein the fabric is fabricated using a loom having at least three warp beams.  
   
   
       11 . A fabric for papermaking comprising: 
 a first weft system, a second weft system and a third weft system, the second weft system between the first and third weft systems; and    a plurality of warp systems, each warp system having at least one warp yarn, each warp yarn binding with the second weft system and one of the first and third weft systems.    
   
   
       12 . The fabric for papermaking of  claim 11 , wherein the first weft system is one of a paper side weft, a wear side weft and an intermediate weft.  
   
   
       13 . The fabric for papermaking of  claim 11 , wherein each warp system is independent.  
   
   
       14 . The fabric for papermaking of  claim 11 , wherein mesh density of the first weft system and the second weft system is independent from a mesh density of the third weft system and the second weft system.  
   
   
       15 . The fabric for papermaking of  claim 11 , wherein the fabric is fabricated using a plurality of shafts ranging from 4 to 56.  
   
   
       16 . The fabric for papermaking of  claim 11 , wherein the first weft system has a first yarn having a first diameter, the second weft system has a second yarn having a second diameter and the third weft system has a third yarn having a third diameter.  
   
   
       17 . The fabric for papermaking of  claim 11 , wherein the at least one warp yarn has a fourth diameter.  
   
   
       18 . The fabric for papermaking of  claim 11 , wherein the yarn is one of a mono filament and a twisted pair.  
   
   
       19 . The fabric for papermaking of  claim 11 , wherein warp repeats range from 2 to 112.  
   
   
       20 . The fabric for papermaking of  claim 11 , wherein the fabric is fabricated using a loom having at least three warp beams.