Papermaking belt

Abstract

Provided is a papermaking belt that is used in a papermaking machine and that comprises a first plane on which a wet paper web is placed and a second plane on the opposite side to the first plane, wherein the papermaking belt comprises a reinforcing fibrous substrate layer comprising at least one layer of a woven fabric, at least one layer of said woven fabric comprises a double or more combination weave pattern, said combination weave pattern comprises first yarns and second yarns that are placed in parallel; said first yarns are placed closer to the first plane-side than said second yarns and said second yarns are placed closer to the second plane-side than said first yarns; and said second yarns comprise a polyester yarn.

What is claimed is: 
     
         1 . A papermaking belt that is used in a papermaking machine and that comprises a first plane on which a wet paper web is placed and a second plane on the opposite side to the first plane, wherein:
 the papermaking belt comprises a reinforcing fibrous substrate layer comprising at least one layer of a woven fabric,   at least one layer of said woven fabric comprises a double or more combination weave pattern,   said combination weave pattern comprises first yarns and second yarns that are placed in parallel;   said first yarns are placed closer to the first plane-side than said second yarns and said second yarns are placed closer to the second plane-side than said first yarns; and   said second yarns comprise a polyester yarn.   
     
     
         2 . The papermaking belt according to  claim 1 , wherein said second yarn are crimped yarns. 
     
     
         3 . The papermaking belt according to  claim 1 , wherein said second yarns are multifilament twist yarn. 
     
     
         4 . The papermaking belt according to  claim 1 , wherein said first yarns and said second yarns are placed in the machine direction of the papermaking belt. 
     
     
         5 . The papermaking belt according to  claim 1 , comprising no batt fiber layer. 
     
     
         6 . The papermaking belt according to  claim 1 , wherein the fineness of said first yarns is greater than the fineness of said second yarns. 
     
     
         7 . The papermaking belt according to  claim 1 , wherein:
 said woven fabric further comprises third yarns that are woven into said first yarns and said second yarns; and   said third yarns are monofilament twist yarns.   
     
     
         8 . The papermaking belt according to  claim 1 , wherein:
 said woven fabric comprising said combination weave pattern further comprises third yarns that are woven into said first yarns and said second yarns; and   said combination weave pattern is a weave pattern that comprises a repeat unit that is capable of concurrent formation of a repeat in which each said third yarn passes through K said first yarns on the side of said first plane while it passes through L said first yarns on the side of said second plane and a repeat in which each said third yarn passes through M said second yarns on the side of said first plane while it passes through N said second yarns on the side of said second plane;   wherein the relation K/L≥N/M is satisfied.   
     
     
         9 . The papermaking belt according to  claim 1 , wherein:
 said woven fabric comprising said combination weave pattern further comprises third yarns that are woven into said first yarns and said second yarns, and   the number of crossing points of said first yarns and said third yarns in a weave repeat is greater than the number of crossing points of said second yarns and said third yarns in the weave repeat.   
     
     
         10 . The papermaking belt according to  claim 1 , wherein the papermaking belt is a wet paper transfer belt. 
     
     
         11 . The papermaking belt according to  claim 1 , wherein the papermaking belt is a shoe press belt.