Yarn having flame-retardant effect and textile fabric formed therefrom

Abstract

The invention relates to a yarn having regenerated cellulose fibers produced by a spinning process, in particular a wet-spinning process and in particular consisting thereof, and having flame-retardant characteristics brought about by a flame retardant means spun into at least one portion of the regenerated cellulose fibers, wherein the yarn as soon across the cross-section thereof has an inhomogeneous distribution of the flame retardant mean and has a weight displaced towards the outside in relation to the yarn center.

1 . Yarn which comprises regenerated cellulose fibers produced by a spinning process, from viscose, and which has flame-retardant characteristics produced via a flame retardant spun into at least one portion of its regenerated cellulose fibers,
 characterized in that the yarn has, seen over its cross section, an inhomogeneous distribution of the spun-in flame retardant with a weight that is displaced towards the outside in relation to the yarn center.   
     
     
         2 . Yarn according to  claim 1 , with a core-sheath structure, in which the sheath has a higher flame retardant content than the core, and, in particular for the case of a flame-retardant-free core, a quantitative core: sheath ratio of 4:5 or less is provided. 
     
     
         3 . Yarn according to  claim 2 , wherein the yarn is a hybrid yarn. 
     
     
         4 . Yarn according to  claim 3 , wherein the core of the hybrid yarn comprises a cellulose multifilament. 
     
     
         5 . Yarn according to  claim 4 , wherein the core contains no flame retardant. 
     
     
         6 . Yarn according to  claim 3 , wherein the hybrid yarn is a core spun yarn. 
     
     
         7 . Yarn according to  claim 6 , wherein the quotient of the titer of core to the titer of the cover yarn is 0.75 or less. 
     
     
         8 . Yarn according to  claim 6  or  7 , wherein a cover yarn of the hybrid yarn comprises a cellulose multifilament. 
     
     
         9 . Yarn according to  claim 8 , wherein the cover yarn has a twist of 800 TPM or less. 
     
     
         10 . Yarn according to any one of  claims 3  to  9 , wherein the core or sheath comprise regenerated cellulose fibers spun according to the modal method. 
     
     
         11 . Yarn according to  claim 1 , wherein the titer of the individual yarns for core and/or winding is 220 dtex or less. 
     
     
         12 . Textile fabric comprising a yarn according to  claim 1 . 
     
     
         13 . Textile fabric according to  claim 12 , whose hot air shrinkage in the case of a temperature load of 260° C. for 10 minutes of exposure time is in the range of 10% or less. 
     
     
         14 . Textile fabric according to  claim 13 , wherein said textile fabric is a cloth that contains the yarn according to  claim 1  at least as warp yarn. 
     
     
         15 . Textile fabric according to  claim 13 , wherein said textile fabric is a knitted fabric.