Papermachine clothing with wear-resistant weave

Abstract

Papermachine clothing having machine direction (MD) yarns and cross-machine direction (CD) yarns interwoven in a repeat pattern, wherein the CD yarns are provided in two systems. The first CD yarn system has upper and lower yarns. The second CD yarn system has a single yarn. The first and second CD systems are provided alternatively throughout the fabric. The MD yarns are also provided in two systems, the first MD yarn system extending in between the upper and lower yarns of the first CD yarn system and over the single yarn of the second CD yarn system. Individual yarns of the second MD yarn system extend over one of the upper of lower yarns of the first CD yarn system and the single yarn of the second CD yarn system. Two adjacent machine direction yarns from different MD yarn systems extend as a pair over the same CD yarn of the second CD yarn system with one of the pair of MD yarns extending above the other of the pair such that the other yarn is protected from abrasion.

1 . Papermachine clothing comprising machine direction (MD) yarns and cross-machine direction (CD) yarns interwoven in a repeat pattern such that, on at least one side of the fabric, as part of the weave pattern, two adjacent machine direction yarns extend over the same CD yarn as a pair with one of said pair of MD yarns extending above the other of said pair such that said other yarn is protected from abrasion.  
   
   
       2 . Papermachine clothing of  claim 1 , wherein the CD yarns are provided in two systems, as a first CD yarn system and a second CD yarn system.  
   
   
       3 . Papermachine clothing of  claim 2 , wherein the two CD yarn systems are provided alternately through the fabric.  
   
   
       4 . Papermachine clothing as claimed in  claim 2 , wherein the first CD yarn system comprises stacked upper and lower yarns.  
   
   
       5 . Papermachine clothing of  claim 2 , wherein the second CD yarn system comprises a single yarn.  
   
   
       6 . Papermachine clothing of  claim 4 , wherein YARNS of a first MD yarn system extend inbetween the upper and lower yarns of the first CD yarn system.  
   
   
       7 . Papermachine clothing of  claim 6 , wherein yarns of a second MD yarn system extends over one of the upper or lower yarns of the first CD yarn system and over the yarn of the second CD yarn system.  
   
   
       8 . Papermachine clothing comprising machine direction (MD) yarns and cross-machine direction (CD) yarns interwoven in a repeat pattern, wherein the CD yarns are provided in two systems, the first CD yarn system comprising upper and lower yarns, the second CD yarn system comprising at least one yarn, the first and second CD systems being provided alternately throughout the fabric, and wherein the MD yarns are provided in two systems, the first MD yarn system extending in between the upper and lower yarns of the first CD yarn system and over the at least one yarn of the second CD yarn system and individual yarns of the second MD yarn system extending around one of the upper or lower yarns of the first CD yarn system and the at least one yarn of the second CD yarn system, and wherein two adjacent machine direction yarns from different MD yarn systems extend as a pair over the same CD yarn of the second CD yarn system with one of said pair of MD yarns extending above the other of said pair such that said other yarn is protected from abrasion.  
   
   
       9 . Papermachine clothing of  claim 8 , wherein the MD yarns are flat in cross-section.  
   
   
       10 . Papermachine clothing of  claim 9 , wherein the dimensions of the MD yarns are in the range from 0.30-0.45×0.50-0.80 mm  
   
   
       11 . Papermachine clothing of  claim 8 , wherein the CD yarns are round in cross-section.  
   
   
       12 . Papermachine clothing of  claim 8 , wherein the diameter of CD yarns in the first CD yarn system is in the range from 0.20 to 0.80 mm.  
   
   
       13 . Papermachine clothing of  claim 8 , wherein the diameter of the CD yarns in the second CD yarn system is in the range from 0.50 to 1.50 mm.  
   
   
       14 . Papermachine clothing of  claim 8 , having a permeability in the range from 90-300 CM.  
   
   
       15 . The use of papermachine clothing of  claim 8  as a dryer fabric in a papermaking machine.  
   
   
       16 . Papermachine clothing of  claim 1 , wherein the MD yarns are flat in cross-section.  
   
   
       17 . Papermachine clothing of  claim 16 , wherein the dimensions of the MD yarns are in the range from 0.30-0.45×0.50-0.80 mm  
   
   
       18 . Papermachine clothing of  claim 1 , wherein the CD yarns are round in cross-section.  
   
   
       19 . Papermachine clothing of  claim 2 , wherein the diameter of CD yarns in the first CD yarn system is in the range from 0.20 to 0.80 mm.  
   
   
       20 . Papermachine clothing of  claim 2 , wherein the diameter of the CD yarns in the second CD yarn system is in the range from 0.50 to 1.50 mm.  
   
   
       21 . Papermachine clothing of  claim 1 , having a permeability in the range from 90-300 CM.  
   
   
       22 . The use of papermachine clothing of  claim 1  as a dryer fabric in a papermaking machine.