Method of manufacturing line of autohesion thread

Abstract

A method of manufacturing autohesion thread such that a smooth surface is offered, the cutting thereof is easy, filaments composing thread are not frayed in cutting, drainability is superior, and plural kinds of filaments can be combined. A method of manufacturing a line of fusion thread, wherein plural filaments comprising thermoplastic resin are paralleled, twisted and/or braided if desired, subsequently drawn under heat at a draw ratio of less than 1.0 to thereby substantially fuse the adjacent filaments, and thereafter drawn under heat at a draw ratio of more than 1.0.

1 - 10 . (canceled) 
   
   
       11 . A method of manufacturing a line of fusion thread, wherein plural filaments comprising a thermoplastic resin are paralleled so as to surround a core string, or
 plural filaments comprising a thermoplastic resin are braided around a core string, and   subsequently drawn under heat at a draw ratio of less than 1.0 to substantially fuse the adjacent filaments,   wherein the draw ratio is represented by the following formula:
   a speed of a wind-up roller/a speed of a send-in roller. 
   
   
   
       12 . A method of substantially fusing adjacent filaments, wherein plural filaments comprising a thermoplastic resin selected from the group consisting of polyamide resins, fluororesins and polyolefin resins are
 (a) paralleled,   (b) paralleled and twisted,   (c) paralleled and braided, or   (d) paralleled, twisted and braided,   
     and subsequently drawn under heat at a draw ratio of less than 1.0,
 wherein the draw ratio is represented by the following formula:
   a speed of a wind-up roller/a speed of a send-in roller. 
 
 
   
   
       13 . A line of fusion thread comprising plural filaments comprising a thermoplastic resin and not comprising a fusing medium, wherein adjacent filaments are substantially fused together, and the line of thread is not frayed by 85% or more through visual observation, when the line of thread is cut to hold a cut portion between a pad of a forefinger and a pad of a thumb in a hand of an adult male, and then the line of thread is attempted to be crumpled while a largest manual pressure of the adult male is applied thereto. 
   
   
       14 . The line of fusion thread according to  claim 13 , wherein the line of thread is not frayed by 90% or more through visual observation.