Paper Transporting Felt and Press Apparatus of Paper Machine Having the Paper Transporting Felt

Abstract

A paper transporting felt includes a base layer, a first batt layer formed on a wet paper side surface of the base layer, a second batt layer formed on a press side surface of the base layer, a wet paper contacting fibrous layer including a plurality of split fibers split into fine fibers and a high polymer elastic material impregnating gaps between the fine fibers, and formed on a wet paper side surface of the first batt layer so as to allow the fine fibers and the high polymer elastic material to come into direct contact with the wet paper, and a hydrophilic nonwoven fabric layer disposed between the first batt layer and the wet paper contacting fibrous layer. In a surface of the wet paper contacting fibrous layer which comes into direct contact with the wet paper, the fine fibers are partially covered with the high polymer elastic material.

1 . A paper transporting felt comprising: 
 a base layer;    a first batt layer which is formed on a wet paper side surface of the base layer;    a second batt layer which is formed on a press side surface of the base layer;    a wet paper contacting fibrous layer which includes a plurality of split fibers split into fine fibers and a high polymer elastic material impregnating gaps between the fine fibers, and is formed on a wet paper side surface of the first batt layer so as to allow the fine fibers and the high polymer elastic material to come into direct contact with the wet paper; and    a hydrophilic nonwoven fabric layer which is disposed between the first batt layer and the wet paper contacting fibrous layer,    wherein, in a surface of the wet paper contacting fibrous layer which comes into direct contact with the wet paper, the fine fibers are partially covered with the high polymer elastic material.    
   
   
       2 . The paper transporting felt according to  claim 1 , 
 wherein the wet paper contacting fibrous layer contains 1 wt. % to 10 wt. % of the high polymer elastic material.    
   
   
       3 . The paper transporting felt according to  claim 1 , 
 wherein fibers for forming the wet paper contacting fibrous layer contain 15 wt. % to 100 wt. % of the split fibers and nonsplit fibers as remains.    
   
   
       4 . The paper transporting felt according to any one of  claims 1  to  3 , 
 wherein each size of the split fibers prior to splitting is 3.3 dtex or smaller.    
   
   
       5 . The paper transporting felt according to  claim 4 , 
 wherein each size of the split fibers prior to splitting is 1.9 dtex.    
   
   
       6 . A press apparatus of a paper machine comprising the paper transporting felt according to  claim 1 .  
   
   
       7 . A press apparatus of a paper machine comprising a plurality of press mechanisms each having the paper transporting felt according to  claim 1 , 
 wherein the plurality of press mechanisms are disposed in series along a transporting direction of the wet paper transported by the paper transporting felts.    
   
   
       8 . The press apparatus of a paper machine according to  claim 7 , 
 wherein each size of the split fibers prior to splitting is 3.3 dtex or smaller.    
   
   
       9 . The press apparatus of a paper machine according to  claim 8 , 
 wherein each size of the split fibers prior to splitting is 1.9 dtex.    
   
   
       10 . The press apparatus of a paper machine according to  claim 6 , 
 wherein the press apparatus is a press machine of a closed draw type.    
   
   
       11 . The press apparatus of a paper machine according to  claim 7 , 
 wherein the press apparatus is a press machine of a closed draw type.    
   
   
       12 . The press apparatus of a paper machine according to  claim 6 , 
 wherein the press apparatus is a press apparatus of a shoe press type paper machine, and a press of the press apparatus is a shoe press having a roll and a shoe for pressurizing the paper transporting felt.    
   
   
       13 . The press apparatus of a paper machine according to  claim 7 , 
 wherein the press apparatus is a press apparatus of a shoe press type paper machine, and a press of the press apparatus is a shoe press having a roll and a shoe for pressurizing the paper transporting felt.    
   
   
       14 . The press apparatus of a paper machine according to  claim 6 , 
 wherein the press apparatus is a press apparatus of a roll press type paper machine, and a press of the press apparatus is a roll press having a pair of rolls for pressurizing the paper transporting felt.    
   
   
       15 . The press apparatus of a paper machine according to  claim 7 , 
 wherein the press apparatus is a press apparatus of a roll press type paper machine, and a press of the press apparatus is a roll press having a pair of rolls for pressurizing the paper transporting felt.