Microfiber

Abstract

The present invention relates to a high-tenacity cellulosic regenerated fiber with an individual fiber titer of between 0.6 and 0.9 dtex and yarns and planar textile structures which contain regenerated fibers of this kind.

1 . A high-tenacity cellulosic regenerated fiber with an individual fiber titer T between 0.6 and 0.9 dtex, preferably between 0.6 and 0.8 dtex, wherein the regenerated fiber has a tenacity (B c ) in the conditioned state of B c  (cN)≧1.3√T+2T and a wet modulus (B m ) with an elongation of 5% of B m  (cN)≧0.5*√T. 
     
     
         2 . A regenerated fiber according to  claim 1 , wherein the regenerated fiber is a staple fiber. 
     
     
         3 . A yarn which comprises cellulosic regenerated fibers according to  claim 1 . 
     
     
         4 . The yarn according to  claim 3 , produced using an air spinning process, wherein the yarn has a fineness of more than 50 Nm, preferably more than 85 Nm, and most preferably more than 100 Nm. 
     
     
         5 . The yarn according to  claim 3 , comprising 100% cellulosic regenerated fibers. 
     
     
         6 . The yarn according to  claim 3 , further comprising contains at least one other fine fiber type. 
     
     
         7 . The yarn according to  claim 6 , wherein the at least one other fiber type is selected from the group consisting of synthetic microfibers, including polyester, polyamide and polyacrylic; other cellulosic fibers, including cotton, combed cotton, Lyocell, cupro, linen, ramie, and kapok; and fine fibers of animal origin, including alpaca, angora, cashmere, mohair and other silks. 
     
     
         8 . A planar textile structure comprising cellulosic regenerated fibers according to  claim 1 . 
     
     
         9 . The planar textile structure according to  claim 8  having a weight per surface area of less than 150 g/m2, and most preferably less than 115 g/m2. 
     
     
         10 . The planar textile structure according to  claim 8 , comprising 100% cellulosic regenerated fibers. 
     
     
         11 . The planar textile structure according to  claim 8 , comprising at least one other fine fiber type. 
     
     
         12 . The planar textile structure according to  claim 11 , wherein the at least one other fiber type is selected from the group consisting of synthetic microfibers, including polyester, polyamide and polyacrylic; other cellulosic fibers, including cotton, combed cottons, Lyocell, cupro, linen, ramie and kapok; and fine fibers of animal origin, including alpaca, angora, cashmere, mohair and various silks.