Dyed textile hook-and-loop fastener and method for dyeing textile hook-and-loop fastener

Abstract

A dyed textile hook-and-loop fastener obtained through supercritical CO 2 dyeing of a textile hook-and-loop fastener, is dyed in a deep color, and exhibits a high rupture elongation due to having less thermal history in a dyeing step.

1 . A dyed textile hook-and-loop fastener, comprising:
 a textile substrate fabric composed of warp and weft; and   multiple engaging elements rising from the one surface of the substrate fabric,
 wherein the engaging element is a loop-shaped engaging element, a hook-shaped engaging element, or both, 
 wherein the hook-shaped engaging element is formed of a yarn for hook-shaped engaging element which is woven into the substrate fabric parallel to the warp, 
 wherein the loop-shaped engaging element is formed of a yarn for loop-shaped engaging element which is woven into the substrate fabric parallel to the warp, 
 wherein the warp is made of a polyethylene terephthalate-based polyester, 
 wherein the yarn for hook-shaped engaging element is made of the polyethylene terephthalate-based polyester or a polybutylene terephthalate-based polyester, 
 wherein the yarn for loop-shaped engaging element is made of the polyethylene terephthalate-based polyester or a polybutylene terephthalate-based polyester, 
 wherein the weft is made of a core-sheath type heat-fusible fiber in which a heat-fusible low-melting point polyester resin is contained as a sheath component and the polyethylene terephthalate-based polyester is contained as a core component, 
 wherein a root of the engaging element is fused to the melted sheath component and fixed to the substrate fabric, 
 wherein the sheath component and the core component of the warp and the weft, and the engaging element are dyed with a disperse dye, and 
 the dyed textile hook-and-loop fastener further satisfies the following conditions (1) to (3), 
 (1) the disperse dye is present inside the core component of the core-sheath type heat-fusible fiber; 
 (2) a rupture elongation of the hook-shaped engaging element is 27 to 41%; 
 (3) a rupture elongation of the loop-shaped engaging element is 35 to 45%. 
   
     
     
         2 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the rupture elongation of the hook-shaped engaging element is 27 to 38%. 
     
     
         3 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the rupture elongation of the loop-shaped engaging element is 35 to 40%. 
     
     
         4 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the engaging element is the hook-shaped engaging element, and a degree of crystallization of the engaging element is 62 to 72%. 
     
     
         5 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the engaging element is the hook-shaped engaging element, and a breaking strength of the engaging element is 4.29 to 4.47 cN/dtex. 
     
     
         6 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the engaging element is the loop-shaped engaging element, and the degree of crystallization of the engaging element is 75 to 87%. 
     
     
         7 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein the engaging element is the loop-shaped engaging element, and the breaking strength of the engaging element is 2.01 to 2.07 cN/dtex. 
     
     
         8 . The dyed textile hook-and-loop fastener according to  claim 1 , wherein a transmittance of the sheath component (heat-fused portion) of the core-sheath composite fiber is 70% or less. 
     
     
         9 . A dyeing method of a textile hook-and-loop fastener, comprising dyeing the textile hook-and-loop fastener under supercritical CO 2  using a disperse dye, in which the textile hook-and-loop fastener contains:
 a textile substrate fabric composed of warp and weft; and   multiple engaging elements rising from the one surface of the substrate fabric,
 wherein the engaging element is a loop-shaped engaging element, a hook-shaped engaging element, or both, 
 wherein the hook-shaped engaging element is formed of a yarn for hook-shaped engaging element which is woven into the substrate fabric parallel to the warp, 
 wherein the loop-shaped engaging element is formed of a yarn for loop-shaped engaging element which is woven into the substrate fabric parallel to the warp, 
 wherein the warp is made of a polyethylene terephthalate-based polyester, 
 wherein the yarn for hook-shaped engaging element is made of the polyethylene terephthalate-based polyester or a polybutylene terephthalate-based polyester, 
 wherein the yarn for loop-shaped engaging element is made of the polyethylene terephthalate-based polyester or a polybutylene terephthalate-based polyester, 
 wherein the weft is made of a core-sheath type heat-fusible fiber in which a heat-fusible low-melting point polyester resin is contained as a sheath component and the polyethylene terephthalate-based polyester is contained as a core component, 
 wherein a root of the engaging element is fused to the melted sheath component and fixed to the substrate fabric.