Denim fabric and its use

Abstract

This invention relates to a fabric consisting of at least a first yarn containing cellulosic fibers modified by a cationic modifier and a second yarn containing cellulosic fibers not modified by a cationic modifier, and to the use of this fabric in order to obtain a denim appearance.

1 . A fabric comprising
 a. a first yarn comprising cellulosic fibers modified by a cationic modifier, and   b. a second yarn comprising cellulosic fibers not modified by a cationic modifier.   
     
     
         2 . The fabric according to  claim 1 , wherein the construction of the fabric is such that on a first surface of the fabric mainly the first yarn is visible and on a second surface mainly the second yarn is visible. 
     
     
         3 . The fabric according to  claim 1 , wherein the fabric is either a knit fabric or a woven fabric. 
     
     
         4 . The fabric according to  claim 3 , wherein the knit fabric is a tuck and miss stich construction. 
     
     
         5 . The fabric according to  claim 3 , wherein the woven fabric is denim. 
     
     
         6 . The fabric according to  claim 1 , wherein the fabric is a greige fabric. 
     
     
         7 . The fabric according to  claim 1 , wherein the fabric is dyed to a denim appearance. 
     
     
         8 . The fabric according to  claim 1 , wherein the first yarn comprises between 30 and 80% (w/w) of lyocell fibers. 
     
     
         9 . The fabric according to  claim 1 , wherein the second yarn consists of cellulosic fibers. 
     
     
         10 . The fabric according to  claim 1 , further comprising a third yarn, wherein the third yarn is an elastane yarn. 
     
     
         11 . A method of making the fabric of  claim 1  having a denim appearance, comprising dyeing the fabric with a reactive dyestuff at a pH of between 6.0 and 8.0, in the absence of salt. 
     
     
         12 . The method according to  claim 11 , wherein the reactive dyestuff is a composition comprising a mixture of several dyestuffs. 
     
     
         13 . A tailored garment comprising the fabric according to  claim 1 . 
     
     
         14 . A garment comprising the fabric according to  claim 1 . 
     
     
         15 . The fabric according to  claim 3 , wherein the fabric is a knit fabric. 
     
     
         16 . The fabric according to  claim 9 , wherein the second yarn is 100% lyocell fibers. 
     
     
         17 . The method according to  claim 11 , wherein the pH of the reactive dyestuff is between 6.5 and 7.5. 
     
     
         18 . The garment of  claim 14 , wherein the garment is a pair of jeans, a jacket, a shirt or a blouse.