Abstract
Yams production from recycled fibers (RF) is limited, and spinners often prefer to produce coarse yams from these fibers. In this research, we attempt to produce middle- count twp-component and three-component yams from RF in such a way that the RF in the yarn core are completely covered by virgin cotton fibers. To improve the tensile properties of such yams, we produce a three-component yarn with a continuous filament in its core, RF in the middle layer, and virgin cotton fibers in the sheath, using a friction spinning machine modified for this purpose. The results show that the appearance of the 51/49 cotton/RF two-component yams is like that of a 100% cotton yarn, and the imperfections of the RF sliver have no significant effect on yarn appearance. The results also show that the strength of a two-component yarn is greater than that of a 100% RF yarn. Spinning a 30 tex yarn from 100% RF is very difficult, and the end breaks are extremely high. In practice, it is impossible to produce yarn from RF. However, producing a 30-tex two- component yarn using RF with new fibers in the sheath is easy and trouble-free, but the yarn is weak. The tensile properties of the yarn show that the strength and elongation of a 30-tex three-component core yarn are greater than those of an equivalent 100% cotton yarn, a cotton/RF yarn, and a 100% RF yarn. Also, the irregularity of the three-component core yarn is less than those of cotton/RF and RF yams. Thus, we show that medium count yams of acceptable appearance and tensile properties can be produced from RF.
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