Cellulose fiber

Abstract

The fiber according to the invention displays a specific combination of properties with regard to the Höller factors, the flexibility and the abrasion resistance within a planar assembly. Hence, the fiber shows a behavior more similar to viscose and can be processed in the textile chain according to viscose standard methods.

1 ) A cellulosic fiber of the Lyocell type which has a titer of from 0.8 dtex to 3.3 dtex and is characterized by the following relationships:
 Höller factor F2≥1, preferably ≥2   Höller factor F1≥−0.6   Höller factor F2≤6 and   Höller factor F2 minus 4.5*Höller factor F1≥1, preferably ≥3.   
     
     
         2 ) The fiber according to  claim 1 , characterized by a wet abrasion resistance amounting to between 300 and 5000 revolutions. 
     
     
         3 ) The fiber according to  claim 1  or  2 , characterized by a flexibility of between 0.55 and 1.00. 
     
     
         4 ) The fiber according to any of the preceding claims, wherein a single jersey 150 g/m2 produced from a ring yarn Nm 50/1 of said fiber exhibits an abrasion resistance according to Martindale of between 30 000 and 60 000 tours up to the point of hole formation. 
     
     
         5 ) The fiber according to any of the preceding claims, characterized in that it is produced according to the amine oxide process. 
     
     
         6 ) The fiber according to any of the preceding claims, characterized in that it is produced from a mixture of at least two different pulps. 
     
     
         7 ) A fiber bundle comprising a plurality of fibers according to any of the preceding claims.