Crimped Filament-Containing Woven or Knitted Fabric Manifesting Roughness Upon Wetting with Water, Process for Producing the Same and Textile Products Made Therefrom

Abstract

A woven or knitted fabric, having a roughness which is manifested when wetted with water and disappears when dried, comprises crimped filaments A whose percentage of crimp decrease when wetted with water, and filaments B composed of non-crimped filaments and/or crimped filaments which undergo substantially no change in percentage of crimp when wetted with water, wherein the change of the roughness is 5% or more, determined in accordance with the following equation: Change in Roughness (%)=((TW−TD)/TD)×100 in which TD: a thickness upon drying and TW: a thickness upon wetting with water, of the woven or knitted fabric.

1 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water, and comprises yarns comprising crimped filaments A the percentage of crimp of which decreases upon wetting with water, and yarns comprising filaments B comprising at least one type of filaments selected from non-crimped filaments and crimped filaments which undergo substantially no change in percentage of crimp upon wetting with water, 
 characterized in that the change in roughness calculated by the equation:      change in Roughness (%)=(( TW−TD )/ TD )×100    wherein TD represents a thickness of the woven or knitted fabric measured after standing it in an environment having a temperature of 20° C. and a humidity of 65% RH for 24 hours and TW represents a largest thickness of the water-wetted portion of the woven or knitted fabric measured one minute after 1 ml of water has been dropped onto the woven or knitted fabric, is 5% or greater.    
   
   
       2 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , wherein the crimped filaments A are selected from crimped conjugate filaments comprising a polyester resin component and a polyamide resin component which components are different from one another in terms of water-absorption and self-elongation properties, and bonded to one another in a side-by-side structure, the conjugate filaments having crimps formed by revealing the 
 latent crimpability of the conjugate filaments.    
   
   
       3 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 2 , wherein the polyester resin component comprises a modified polyethylene terephthalate resin comprising 5-sodiumsolfoisophthalic acid copolymerized in an amount of 2.0-4.5 molar percent based on the content of the acid component of the resin.  
   
   
       4 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , wherein the yarn comprising the crimped filaments A is twisted at the number of twist of 0-300 T/m.  
   
   
       5 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , wherein the filaments B comprise a polyester resin.  
   
   
       6 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , comprising at least one portion Y composed entirely of the crimped filaments A at least one portion Z composed entirely of the filaments B, wherein the Z portion being formed continuously in either or both the warp and weft directions or in either or both the course and wale directions of the woven or knitted fabric.  
   
   
       7 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , comprising at least one portion Z composed entirely of the filaments B and at least one portion X composed of the filaments A and the filaments B, the Z portion being formed continuously in either or both the warp and weft directions or in either or both the course and wale directions of the woven or knitted fabric.  
   
   
       8 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , comprising at least one portion X composed of the crimped filaments A and the filaments B and at least one portion Y composed entirely of the crimped filaments A, wherein the X portion is formed continuously in either or both the warp and weft directions or in either or both the course and wale directions of the woven or knitted fabric.  
   
   
       9 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , comprising at least one portion X composed of the crimped filaments A and the filaments B, at least one portion Y composed entirely of the crimped filaments A and at least one portion Z composed entirely of the filament B, wherein the Z portion is formed continuously in either or both the warp and weft directions or in either or both the course and wale directions of the woven or knitted fabric.  
   
   
       10 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , having a multi-ply weave or knit structure with two or more plies, wherein at least one ply of the multi-ply structure is composed of the crimped filaments A and the filaments B, while at least one other ply is composed entirely of the filaments B, and the ply containing the filaments A and B and the other ply containing the filaments B are partially bound with each other.  
   
   
       11 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , having a multi-ply weave or knit structure with two or more plies, wherein at least one ply of the multi-ply structure is composed of the crimped filaments A and filaments B, while at least one other ply is composed entirely of the crimped filaments A and B and the other ply containing the crimped filaments A are partially bound with each other.  
   
   
       12 . A crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water according to  claim 1 , having a multi-ply weave or knit structure with two or more plies, wherein at least one ply of the multi-ply structure is composed entirely of the crimped filaments A, while at least one other ply is composed entirely of the crimped filaments B, and the crimped filaments A-containing ply and the filaments B-containing ply are partially bound with each other.  
   
   
       13 . A process for production of a crimped filament-containing woven or knitted fabric which manifests roughness upon wetting with water, according to  claim 1 , characterized by comprising a step of producing a precursor woven or knitted fabric from precursor filaments from which crimped filaments A which reveals crimps when a heat treatment is applied thereto, and the resultant crimps having a property such that the percentage of crimp decreases when wetted with water, and precursory filaments from which at least one type of filaments B selected from filaments which do not reveal crimps even when a heat treatment is applied thereto, and filaments which reveal crimps when a heat treatment is applied thereto but the percentage of crimp of the crimps essentially not decreasing when wetted with water, and a step of applying a heat treatment to the precursory woven or knitted fabric to produce a woven or knitted fabric comprising the crimped filaments A and the filaments B.  
   
   
       14 . A process for the production of a crimped filament-containing woven or knitted fabric according to  claim 13 , wherein the precursory filaments from which the crimped filaments A are formed from non-crimped conjugate filaments comprising a polyester resin component and a polyamide resin component which components differ in water-absorption and self-elongation from each other and are bonded in a side-by-side structure.  
   
   
       15 . A process for production of a crimped filament-containing woven or knitted fabric according to  claim 14 , wherein the polyester resin component in the non-crimped conjugate filaments comprises a polyester resin having an intrinsic viscosity of 0.30-0.43, and the polyamide resin component comprise a polyamide resin having an intrinsic viscosity of 1.0-1.4.  
   
   
       16 . A process for production of a crimped filament-containing woven or knitted fabric according to  claim 13 , wherein the non-crimped conjugate filaments satisfy, after a crimping treatment in boiling water was applied thereto, the requirements: 
 (1) a dry percentage of crimp DC after standing in an environment having a temperature of 20° C. and a humidity of 65% RH for 24 hours, is in the range of 1.5 to 13%;    (2) a percentage of crimp HC immediately after an immersion in water at a temperature of 20° C. for 2 hours, is in the range of 0.5 to 7.0%; and    (3) a difference between the dry percentage of crimp DC and wet percentage of crimp HC (DC-HC) is 0.5% or greater.    
   
   
       17 . A textile product which includes the crimped filament-containing woven or knitted fabric according to  claim 1 .  
   
   
       18 . A textile product according to claims  17 , selected from outerwear, sportswear and underwear clothes.