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http://dx.doi.org/10.12772/TSE.2013.50.149

Characteristics of Surface Twists of Bundle on Friction Drum  

Lim, Jung H. (Department of Textile Engineering, Graduate School, Kyunghee University)
Ganbat, T. (Department of Mechanical Engineering, Graduate School, Kyunghee University)
Huh, You (Department of Mechanical Engineering, College of Engineering, Kyunghee University)
Publication Information
Textile Science and Engineering / v.50, no.3, 2013 , pp. 149-157 More about this Journal
Abstract
This research determines the traits of bundle twists that appeared on the bundle surface, while the input fiber fleece is transformed to a bundle by using friction drums. A mathematical model is suggested to describe the twists generated in the friction area. Based on the bundle thickness dynamics, which is supposed to determine the geometrical array of the fibers joined layer by layer on the outer surface of an in-process bundle that rotates about the bundle axis, twists on the bundle surface are mathematically described, taking into account the bundle-drum slippage ratio, fiber fleece-feeding angle, and friction ratio. Twists are expressed in terms of the number of twists per length and the twist angle. Results show that the slippage ratio has a significant influence on the number of twists per length, but its influence on the twist angle is minimal. The fleece-feeding angle appears to be an important factor in deciding the twists. In addition, a critical fleece-feeding angle that corresponds to an angle that changes the twist direction could be determined. The friction ratio is positively related to the bundle twists, i.e., the twist number increases linearly with increasing friction ratio. However, the friction ratio is negatively related to the twist angle, i.e., at low friction ratios, the twist angle changed significantly, whereas a high friction ratio led to an almost constant twist angle.
Keywords
bundle thickness; surface twists; geometrical array; slippage ratio; fleece feeding angle; friction ratio;
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1 J. Luenenschloss and K. J. Brockmanns, "Mechanics of OEFriction Spinning", Int Text Bull, Yarn Forming, 1985, 31(3), 29-59.
2 E. Fehrer, “An Analysis of Friction Spinning”, Textil Praxis Int, 1986, 41(10), 1045-1047.
3 P. R. Lord, C. W. Joo, and T. Ashizaki, “The Mechanics of Friction-spinning”, J Text Inst, 1987, 78, 234-254.   DOI
4 P. R. Lord and J. P. Rust, “Twist Distribution in Open-end Friction-spun Yarn”, J Text Inst, 1990, 81, 211-213.   DOI
5 F. Konda, M. Okamura, and A. A. Merati, “Effect of Suction Air Pressure in Friction Spinning on Yarn Properties”, Text Res J, 1996, 66, 446-452.   DOI   ScienceOn
6 A. A. Merati and M. Okamura, "Fiber Feeding onto the Yarn Tail in Friction Spinning, Part II: Convergent Fiber Transport Channel", Text Res J, 2000, 70, 974-980.   DOI   ScienceOn
7 R. Y. Zhu, G. A. V. Leaf, and W. Oxenham, “Fiber Behaviour in the Twisting Zone of a Friction-spinning Process”, J Text Inst, 1993, 84, 57-67.   DOI   ScienceOn
8 J. S. Kim, B. Lehmann, and Y. Huh, “Bundle Thickness Distribution on the Drum Surface in the Friction Spinning System”, Text Sci Eng, 2008, 45(3), 144-148.
9 Y. Huh, Y. R. Kim, and W. Oxenham, "Analyzing Structural and Physical Properties of Ring, Rotor, and Friction Yarns", Text Res J, 2002, 72, 156-163.   DOI   ScienceOn
10 J. Luenenschloss and K. J. Brockmanns, "Cotton Processing by New Spinning Technologies, Possibilities and Limits", Int Text Bull, Yarn Formation (2), 1986, 32, 7-18.
11 H. Fuchs, “Mechanical-Aerodynamic Friction Process”, Melliand Textilber, 1979, 60, 289-291.
12 K. J. Brockmanns and J. Luenenschloss, "Friction Spinning Analysed", Int Text Bull, Yarn Forming, 1984, 30(3), 15-32.
13 K. J. Brockmanns and T.-T. Phoa, "Theoretical and Practical Description of Fiber Moving and Twist Insertion during OE. Friction Spinning", Int Text Bull, Yarn Formation (1), 1987, 33, 55-67.