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ABSTRACT
Yarns production from recycled fibers (RF) is limited, and spinners often prefer to produce coarse yarns from these fibers. In this research, we attempt to produce middlecount two-component and three-component yarns 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 yarns, 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 yarns 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 yarns. Thus, we show that medium count yarns of acceptable appearance and tensile properties can be produced from RF.
The textile recycling industry provides raw materials for upholstery, mattress filling, wadding, and other absorbent products. Recycled fibers (RF) are also used to manufacture felt and even new cloth. By recycling fibers, primary resources are conserved, the environment is protected from pollution, and landfill deposits are reduced.
Textile waste is generally classified as either pre-consumer or post-consumer. Pre-consumer textile waste consists of by-product materials from fiber and textile manufacturing industries. It originates from textile and carpet mills (in the form of threads and yarns), cutting and sewing factories, and fiber producers (in the form of tows or filaments of standard fibers). These wastes are generally...