Abstract
The article is devoted to the study of the properties of the yarn obtained by the methods of ring and rotor spinning, for twisted yarn, produced on a VTS-09 double twist machine made by Volkmann (Germany). Experiments were carried out on two typesof spinning yarns with yarn counts Ne 20/2 and 12/2 in the existing design (control) and the new design, flexible element with equal tension and twist intensifier and compared the effects of the resulting twisted yarn for quality parameters. Mathematical statistical methods (single-factor analysis of variance) were used to assess the quality of twisted yarn. Experiments have shown that the use of a new design nozzle reduces the vibration of the yarn, which leads to a uniform distribution of twists along the length of the twisted yarn, increases its tensile strength and improves the quality of the twisted yarn.
Highlights
One of the most pressing issues today is the improvement of technology for the production of twisted yarn from cotton yarn, to determine the effect of twisting of yarn from single yarns spun by ring and OE on its unevenness, strength and Twist Multiplayer[1, 2]
Was studied the influence of single yarns spun by the ring and OE methods on the quality of twisted yarns using a new uniform tensioning and twisting device
The RKM of a yarn obtained from a ring spinning machine is 1.22-1.24 times higher than that of a yarn obtained from an OE spinning machine Twisting of Ne 20 OE yarn is 14% higher than ring-spun yarn maturing (846 vs. 742 twists/m), Ne 12 OE yarn is 4% higher (630 vs. 604 twists/m), the use of fibre strength in yarn strength in ring spinning the coefficients are 0.52 (Ne 20) and 0.54 (Ne 12), while the OE yarn is 0.43 and 0.44, respectively
Summary
One of the most pressing issues today is the improvement of technology for the production of twisted yarn from cotton yarn, to determine the effect of twisting of yarn from single yarns spun by ring and OE on its unevenness, strength and Twist Multiplayer[1, 2]. The magnitude of the friction force depends on the magnitude of the normal pressure created by the tension of the fibres when twisting the yarn [8]. A feature of the device is the installation of elastic elements on the inner wall of the nozzle, the spherical shape of the ball-bearing surface of the guide tube thread, as well as the uniform distribution of twists during torsion without vibration. This leads to a decrease in the unevenness of the number of twists and an increase in the quality of the twisted yarn [15,16,17]
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