Pressure applied on the top roller of drafting zone is a vital factor on which the quality of ultimate yarn depends. Drafting zone is needed to reduce the mass per unit length of input material. Appropriate contact of top rollers with bottom rollers is necessary to ensure proper drafting. In this paper, the effects of different front top roller pressure of drafting zone on the quality of 20Ne cotton-flax blended yarns (C:L = 45:55) were studied. It was observed that a higher pressure value gives a lower co-efficient of mass variation, imperfections, hairiness and higher evenness, tenacity, elongation properties.
References
[1]
Ishtiaque, S.M., Das, A. and Niyogi, R. (2006) Optimization of Fiber Friction, Top Arm Pressure and Roller Setting at Various Drafting Stages. Textile Research Journal, 76, 913-921. https://doi.org/10.1177/0040517506067331
[2]
Rengasamy, R.S. (2010) Fundamental Principles of Ring Spinning of Yarns. In: Lawrence, C.A., Ed., Advances in Yarn Spinning Technology, Woodhead Publishing, Sawston, Cambridge, 42-78. https://doi.org/10.1533/9780857090218.1.42
[3]
Ghosh, G.C. and Bhaduri, S.N. (1962) Dependence of Hook Removal at Drawing on Some Drafting Parameters. Textile Research Journal, 32, 864-866. https://doi.org/10.1177/004051756203201013
[4]
Cavaney, B. and Foster, G.A.R. (1955) 38—The Irregularity of Materials Drafted on Cotton Spinning Machinery and Its Dependence on Draft, Doubling and Roller Setting. Journal of the Textile Institute Transactions, 46, T529-T550. https://doi.org/10.1080/19447027.1955.10750339
[5]
Anderson, S.L. and Foster, G.A.R. (1955) 39—The Irregularity of Materials Drafted on Cotton Spinning Machinery and Its Dependence on Draft, Doubling and Roller Setting. Journal of the Textile Institute Transactions, 46, T551-T564. https://doi.org/10.1080/19447027.1955.10750340
[6]
Ramasamy, K.M., Duraisamy, R. and Mammo, H. (2019) Improving Yarn Quality by Modification on Drafting Zone Settings of Draw Frame. International Journal of Engineering Trends and Technology, 67, 157-166. https://doi.org/10.14445/22315381/IJETT-V67I11P226
[7]
Cui, Y., Song, H., Cheng, L., Deng, W. and Ji, Y. (2021) Experimental Study of a Modified Drafting System Based on the Ring Spinning Frame. Textile Research Journal, 91, 1486-1496. https://doi.org/10.1177/0040517520984977
[8]
Das, A., Ishtiaque, S.M. and Kumar, R. (2004) Study on Drafting Force of Roving: Part III—Effect of Process Parameters and Roving Irregularity on Drafting Force Variability. Indian Journal of Fibre and Textile Research, 29, 308-312.
[9]
Das, A., Ishtiaque, S.M. and Kumar, R. (2004) Study on Drafting Force of Roving: Part IV—Correlation between Drafting Force, Roving Strength and Yarn Quality. Indian Journal of Fibre and Textile Research, 29, 313-317.
[10]
Olsen, J.S. (1974) Measurement of Sliver Drafting Forces. Textile Research Journal, 44, 852-855. https://doi.org/10.1177/004051757404401105
[11]
Su, C.I., Lo, K.J. and Lee, J.Y. (1998) Drafting Force of Fine Denier Polyester Fibers. Textile Research Journal, 68, 559-563. https://doi.org/10.1177/004051759806800803
[12]
El-Sharkawy, A.F., Audivert, R. and De Castellar, M.D. (1974) The Relation between the Drafting Force, Draft, and Setting in the Roller-Drafting of Staple-Fibre Slivers. Journal of the Textile Institute, 65, 325-327. https://doi.org/10.1080/00405007408630476
[13]
Siddiqui, Q., Abro, Z. and Yu, C. (2015) Study of Drafting Force Variability and Sliver Irregularity at the Break Draft Zone of a Draw Frame. Textile Research Journal, 85, 1465-1473. https://doi.org/10.1177/0040517514563724
[14]
Siddiqui, Q., Naeem, M.A. and Ndlovu, L. (2020) A Preliminary Study on the Effect of Short Fiber Content on Drafting Force and Its Variability. Journal of Natural Fibers. https://doi.org/10.1080/15440478.2020.1727816
[15]
Hatamvand, M., Mirjalili, S.A., Fattahi, S., Bashir, T. and Skrifvars, M. (2017) Optimum Drafting Conditions of Polyester and Viscose Blend Yarns. Autex Research Journal, 17, 213-218. https://doi.org/10.1515/aut-2016-0016
