Core spun yarn comprising short cellulosic staple fibers and process for its production

13) A method for producing a yarn comprising the steps of:

• a. Selecting a filament core comprising a plurality of polyester filaments;
• b. Selecting first fibers that are natural cellulosic fibers;
• c. Selecting second fibers that are regenerated cellulosic fibers;
• d. Provide a staple fiber sheath comprising at least 95% by weight of a blend of said first fibers and said second fibers, wherein a weight ratio of said first fibers to said second fibers is in the range of 70/30 to 80/20, the fibers of the sheath have average length between 10 and 25 mm, the 5% (n) index of the fibers of the sheath is between 25 mm and 40 mm, and the short fiber content SFC(n) of the sheath is at between 30% and 70%;
• and
• e. combining said filament core and said staple fiber sheath, via ring spinning.

16) A method for producing a yarn comprising the steps of:

• a. Selecting a filament core comprising a plurality of polyester filaments;
• b. Selecting a staple fiber sheath, wherein at least 95% of the sheath is made of first fibers and second fibers, said first fibers being recycled cotton fibers, said second fibers being regenerated cellulosic fibers, a the weight ratio of said first fibers to said second fibers is in the range of 70/30 to 80/20;
• and
• c. combining said filament core and said staple fiber sheath, via ring spinning.