CORE SPUN YARN COMPRISING SHORT CELLULOSIC STAPLE FIBERS AND PROCESS FOR ITS PRODUCTION
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United States of America Patent
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Oct 24, 2024
app pub date -
Apr 19, 2024
filing date -
Apr 19, 2024
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Abstract
A yarn comprising a filament core and a staple fiber sheath, the staple fiber sheath comprises at least 95% by weight of a blend of first fibers and second fibers. The first fibers are natural cellulosic fibers and the second fibers are regenerated cellulosic fibers, wherein the weight ratio of the first fibers to the second fibers is in the range of 70/30 to 80/20, the weight ratio preferably being about 75/25; the average length of the fibers of the sheath is in the range of 10 to 25 mm, preferably 12 mm to 20 mm; the 5% (n) index of the fibers of the sheath is between 25 mm and 40 mm, more preferably in the range between 28 and 36 mm; the short fiber content SFC(n) of the sheath is between 30% and 70%; and the filament core comprises a plurality of polyester filaments.
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