Papermaking felt and method for manufacturing papermaking felt

Abstract

Provided is a papermaking felt having a wet paper web carrying surface for carrying a wet paper web, comprising a substrate, a batt layer placed on the wet paper web carrying surface side of the substrate and comprising a short fiber, and a nonwoven fabric placed adjacent to the batt layer on the wet paper web carrying surface side of the substrate, wherein the nonwoven fabric has a penetration resistance of 2.0 N/(100 g/m2×number of needles) or less per one needle when the basis weight of the fabric is 100 g/m2.

What is claimed is: 
     
         1 . A papermaking felt comprising a wet paper web carrying surface for carrying the wet paper web, comprising:
 a substrate;   a batt layer which is placed on the wet paper web carrying surface side of the substrate and which comprises a short fiber; and   a nonwoven fabric which is placed adjacent to the batt layer on the wet paper web carrying surface side of the substrate;   wherein the nonwoven fabric has a penetration resistance of 2.0 N/(100 g/m 2 ×number of needles) or less per one needle when the basis weight of the fabric is 100 g/m 2 .   
     
     
         2 . The papermaking felt according to  claim 1 , wherein the nonwoven fabric comprises a continuous yarn. 
     
     
         3 . The papermaking felt according to  claim 1 , wherein the nonwoven fabric comprises a hydrophilic fiber having an official moisture regain equal to or more than 10.0%. 
     
     
         4 . The papermaking felt according to  claim 3 , wherein said hydrophilic fiber comprises one or more types selected from the group consisting of cupra, rayon, lyocell, silk, hemp and wool. 
     
     
         5 . The papermaking felt according to  claim 1 , wherein the fiber constituting the nonwoven fabric has a fiber diameter equal to or more than 5.0 μm and equal to or less than 30 μm. 
     
     
         6 . The papermaking felt according to  claim 1 , wherein the nonwoven fabric is a spun-bond nonwoven fabric. 
     
     
         7 . The papermaking felt according to  claim 1 , wherein the batt layer is in contact with the nonwoven fabric and is placed on the substrate side of the nonwoven fabric. 
     
     
         8 . The papermaking felt according to  claim 1 , further comprising a second batt layer which is placed on the wet paper web carrying surface side of the substrate and which comprises a second short fiber;
 wherein the batt layer and the second batt layer are arranged across the nonwoven fabrics.   
     
     
         9 . The papermaking felt according to  claim 1 , wherein the difference between the official moisture regain of the fiber constituting the nonwoven fabric and the official moisture regain of the short fiber is equal to or more than 2.0% and equal to or less than 12%. 
     
     
         10 . The papermaking felt according to  claim 8 , wherein the difference between the official moisture regain of the fiber constituting the nonwoven fabric and the official moisture regain of the second short fiber is equal to or more than 2.0% and equal to or less than 12%. 
     
     
         11 . The papermaking felt according to  claim 1 , wherein the fineness of the short fiber is equal to or more than 2.0 dtex and equal to or less than 70 dtex. 
     
     
         12 . The papermaking felt according to  claim 8 , wherein the fineness of the second short fiber is equal to or more than 2.0 dtex and equal to or less than 70 dtex. 
     
     
         13 . A method for manufacturing a papermaking felt, comprising a step of laminating a nonwoven fabric and a short fiber on one side of the substrate and performing a needle punch treatment to form the nonwoven fabric and a batt layer consisting of the short fiber on the one side of the substrate,
 wherein the nonwoven fabric has a penetration resistance of 2.0 N/(100 g/m 2 ×number of needles) or less per one needle when the basis weight of the fabric is 100 g/m 2 .