Seam Felt for Papermaking and Manufacturing Method Thereof

Abstract

A seam felt 10 c for papermaking comprises wet paper web side batt layer 30 c and seam region 12 . Fragments of a sheet-shaped nonwoven fabric 40 a , which is disposed at a region of the wet paper web side batt layer 30 c adjacent to the seam region 12 , and which is crushed by means of needle punching, are dispersed within the widthwise range of the batt layer. At least a part of the fibers of the batt layer penetrates holes of the fragments of nonwoven fabric 40 a , and the fragments of nonwoven fabric 40 a are melted by heat and adhere to fibers of the batt layer.

1 . A seam felt for papermaking having a wet paper web side batt layer and a seam region, characterized in that:
 fragments of a sheet-shaped nonwoven fabric fractured by needle punching are dispersed in a region of said wet paper web side batt layer adjacent to said seam region within the depthwise range of said batt layer;   at least a part of fibers of said batt layer penetrates holes of said fragments of nonwoven fabric; and   said fragments of nonwoven fabric melt by heat and adhere to fibers of said batt layer.   
   
   
       2 . A method of manufacturing a seam felt for papermaking, wherein a base fabric having a seam loop is woven by a weaving machine, characterized in that, when a batt layer is implanted into both sides of said base fabric to make a paper making seam felt in a needling process:
 a sheet-shaped nonwoven fabric is disposed at a position adjacent said seam loop;   said sheet-shaped nonwoven fabric is fractured by needle punching, and fragments of nonwoven fabric are dispersed into said batt layer;   a flap is formed by cutting said batt layer at the region of said seam loop in a widthwise direction; and   and said fragments of nonwoven fabric are melted by heating.   
   
   
       3 . A method of manufacturing a seam felt for papermaking according to  claim 2 , wherein said sheet-shaped nonwoven fabric is made of a material the fusing point of which is in the range from 120-180 degrees Celsius.