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 the fineness of said first yarns are greater than the fineness of said second yarns.

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   the fineness of said first yarns are greater than the fineness of said second yarns.   
     
     
         2 . The papermaking belt according to  claim 1 , wherein said second yarns are crimped yarns. 
     
     
         3 . The papermaking belt according to  claim 1 , wherein said second yarns are multifilament twist yarns. 
     
     
         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:
 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 third yarns are monofilament twist yarns.   
     
     
         7 . 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.   
     
     
         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   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.   
     
     
         9 . The papermaking belt according to  claim 1 , wherein the papermaking belt is a wet paper transfer belt. 
     
     
         10 . The papermaking belt according to  claim 1 , wherein the papermaking belt is a shoe press belt.