Composite yarn, fabric comprising the composite yarn, method for producing a composite yarn and arrangement for producing a composite yarn

Abstract

A composite yarn (e.g. for weaving) may include at least one fibrous core made of a core material including recycled fibers (e.g. recycled cellulosic fibers and/or recycled synthetic fibers) and a sheath surrounding the fibrous core. The sheath may be made of a sheath material, such as a sheath material including cellulosic fibers and/or synthetic fibers, having a greater axial strength than the core material.

1 - 12 . (canceled) 
     
     
         13 . A fibrous core configured to be surrounded by a sheath to provide a composite yarn, the fibrous core comprising:
 short fibers with a maximum fiber length of 25 mm; and   long fibers with a fiber length of more than 25 mm, wherein the fibrous core is spun of at least 5% of the short fibers and of at least 10% of the long fibers.   
     
     
         14 . The fibrous core according  claim 13 , wherein at least 30%, 50%, 70%, 90% or 95% of the short fibers have a fiber length between 10 mm and 25 mm. 
     
     
         15 . The fibrous core according to  claim 13 , wherein at least 30%, 50%, 70%, 90% or 95% of the long fibers have a fiber length between 25 mm and 50 mm. 
     
     
         16 . A fibrous core configured to be surrounded by a sheath to provide a composite yarn, the fibrous core comprising:
 short fibers; and   long fibers that are at least 2 mm longer than the short fibers, wherein the fibrous core is spun of at least 5% of the short fibers and of at least 10% of the long fibers.   
     
     
         17 . The fibrous core according to  claim 16 , wherein:
 at least 30%, 50%, 70%, 90% or 95% of the short fibers have a fiber length between 10 mm and 32 mm, and/or   at least 30%, 50%, 70%, 90% or 95% of the long fibers have a fiber length between 25 mm and 50 mm.   
     
     
         18 . The fibrous core according to  claim 16 , wherein:
 at least 30%, 50%, 70%, 90% or 95% of the long fibers are at least 3 mm, 5 mm, 7 mm, 10 mm, 15 mm, 20 mm, 30 mm or 40 mm longer than the short fibers, and/or   at least 30%, 50%, 70%, 90% or 95% of the long fibers are between 2 mm and 40 mm longer than the short fibers.   
     
     
         19 . The fibrous core according to  claim 16 , wherein:
 the short fibers are recycled fibers, and/or   the short fibers include fibers of different materials that include natural fibers and/or man-made fibers.   
     
     
         20 . The fibrous core according to  claim 16 , wherein the long fibers are man-made fibers and/or are recycled fibers. 
     
     
         21 . The fibrous core according to  claim 16 , wherein the fibrous core is spun of at least 10%, 15%, 20%, 25% 30%, 40% or 50% of the short fibers, and/or is spun of at least 15%, 20%, 25%, 30%, 35%, 40% or 50% of the long fibers. 
     
     
         22 . The fibrous core according to  claim 16 , wherein:
 the fibrous core is spun of at least 60% of the short fibers and/or of at least 10%, 15%, 20%, 25%, 30%, 35% or 40% of the long fibers, or   the fibrous core is spun of at least 65%,  67 % or 70% of the short fibers and/or of at least 10%, 15%, 20%, 25% or 30% of the long fibers.   
     
     
         23 . The fibrous core according to  claim 16 , wherein the fibrous core consists of: the short fibers, the long fibers, and a type of fibers different from the short fibers and the long fibers, wherein the fibrous core is spun of a maximum of 85%, 70%, 50%, 30%, 20%, 15%, 10%, 5%, 3% or 1% of the different type of fibers. 
     
     
         24 . A fibrous core configured to be surrounded by a sheath to provide a composite yarn, the fibrous core comprising:
 post-consumer-fabric-fibers; and   man-made-fibers, wherein the fibrous core is spun of at least 5% of the post-consumer-fabric-fibers and of at least 10% of the man-made-fibers.   
     
     
         25 . The fibrous core according to  claim 24 , wherein the post-consumer-fabric-fibers include natural fibers, synthetic fibers, and/or regenerated natural fibers. 
     
     
         26 . The fibrous core according to  claim 24 , wherein:
 the man-made fibers are synthetic fibers or regenerated natural fibers, and/or   the man-made fiber are recycled fibers.   
     
     
         27 . The fibrous core according to  claim 24 , wherein:
 the fibrous core is spun of at least 10%, 15%, 20%, 25%, 30%, 40% or 50% of the post-consumer-fabric-fibers, and/or   the fibrous core is spun of at least 15%, 20%, 25%, 30%, 35%, 40% or 50% of the man-made-fibers.   
     
     
         28 . The fibrous core according to  claim 24 , wherein:
 the fibrous core is spun of at least 60% of the post-consume-fabric-fibers and/or of at least 10%, 15%, 20%, 25%, 30%, 35% or 40% of the man-made-fibers, or   the fibrous core is spun of at least 65%,  67 % or 70% of the post-consumer-fabric-fibers and/or of at least 10%, 15%, 20%, 25% or 30% of the man-made-fibers.   
     
     
         29 . The fibrous core according to  claim 24 , wherein the fibrous core consists of: the post-consumer-fabric-fibers, the man-made-fibers, and a type of fibers different from the post-consumer-fabric-fibers and the man-made-fibers, the fibrous core being spun of a maximum of 85%, 70%, 50%, 30%, 20%, 15%, 10%, 5%, 3% or 1% of the different type of fibers. 
     
     
         30 . The fibrous core according to  claim 24 , wherein the fibrous core has a yarn count between 10 Number English (Ne) and 40 Ne. 
     
     
         31 . The fibrous core according to  claim 24 , wherein the fibrous core is made by open-end spinning or by ring-spinning. 
     
     
         32 . A composite yarn for weaving, comprising:
 at least one fibrous core according to  claim 13 , and   a sheath surrounding the at least one fibrous core.   
     
     
         33 . The composite yarn according to  claim 32 , wherein:
 the sheath is spun of at least 50% of the long fibers or of post-consumer fabric fibers in the core, at least 30%, 50%, 70%, 90% or 95% of the long fibers in the sheath having a fiber length between 25 mm and 50 mm, and/or   the long fibers in the sheath consist of natural fibers, synthetic fibers, and/or regenerated natural fibers.   
     
     
         34 . The composite yarn according to  claim 32 , wherein:
 the composite yarn is comprises at least 5%, 10%, 15% or 20% of the at least one fibrous core and/or a maximum of 45%, 40% or 35% of the at least one fibrous core;   the composite yarn comprises at least 55%, 60%, or 65% of the sheath and/or a maximum of 95%, 90%, 85%, 80% of the sheath; and/or   the composite yarn has a yarn count between 3 Number English (Ne) and 40 Ne.   
     
     
         35 . The composite yarn according to  claim 32 , wherein the sheath is spun around the core by ring spinning. 
     
     
         36 . A woven fabric comprising:
 at least one composite yarn including: at least one fibrous core according to  claim 13 , and a sheath surrounding the at least one fibrous core.   
     
     
         37 - 53 . (canceled)