Effects of Processing Variables on the Properties of Cotton Knitting Yarns

Abstract

The effects of carding rate. total spinning draft, spindle speed, and other production variables on the strength, uni formity, and lint-shedding tendencies of ring-spun cotton knitting yarns were determined. The results showed that higher carding rates improved fiber orientation and produced stronger, more uniform yarns; however, neps in the yarn were increased. Increasing total spinning draft also produced stronger, more uniform yarns. Lower spindle speeds resulted in slightly stronger, more uniform yarns with fewer neps and other imperfections. Optimum conditions for minimum lint shedding during knitting were obtained with lower carding rates and higher total spinning drafts and spindley speeds. Other processing variables that favored reduced lint shedding were combing using double-creded roving, and increasing yarn twist.

Get full access to this article

View all access options for this article.

References

American Society for Testing and Materials ASTM Designa tions (a) 1440-72, (b) 1425 67, (c) 1445 72, (d) 1448 74, (e) 1578 67, (f) 2255 72. (g) 2256 75, ASTM Standards (1974).

Anon. , "Processes and Processing ," Shirley Conference looks, at " Making Textiles" and another covers trends in knitting, Textile Mon. 1975, 56 58 ( 1975).

Barella, A. , Torn, J. , and Vigo, J.P. , Application of a New Hairiness Meter to the Study of Sources of Yarn Hairiness , Textile Res. J. 41. 126 133 (1971).

Bogdan, J.F. and Feng, I.Y.T. , Neps and How to Control Them , Textile World 102, 91 106 ( 1952).

Braun, M. , Buhler, G. , Egbers, G. , Mavely, J. , and Ring, W. , The Influence of Yarn Waxing on the Knitting and Sewing Properties . Melliand Textilber. (English Ed) 56, 278 281 (1975).

C.R.I.T.E.R.. Contribution a l'Etude de la Pilosité des Pilé, de Coton. Bull. Inst. Text. France 94, 33-64 (1961).

Goswami. B.C. , The Hairiness of Cotton Yarn. An Improve ment Over the Existing Microscopic Techniques, Textile Res. J. 39, 234 241 (1969).

Lunenschloss, J. , Die Untersuchung der Garnhaarigkeit und des Einflusses der Spinnbedingungen auf die Haarigkeit von Garnen; 2. Teil, Textil-Praxis 22, 760 765 (1967).

McKenna, F.P. , What's New in Spun Yarns, Knitting Tences 44, 37 38 ( 1975)

10.

Onions, W.J. Srivastava, T.V.K. , and Townend , P.P. , Some Factors Affecting the Hairiness of Fly er Spun Mohair Yarns. J. Textile Inst. 65, 493 499 ( 1974).

11.

Pillay, K.P.R. , A Study of the Hairiness of Cotton Yarns. Part I: Effect of Fiber and Yarn Factors. Textile Res. J. 34, 663 674 (1964).

12.

Pillay, K.P.R. A Study of the Hairiness of Cottony Yarns Part II: Effect of Processing Factors. Textile Res. J. 34. 783 791 (1964).

13.

Ruppenicker. G.F. Jr., Kingsbery , E.C. , and Little, II. W. Cotton Fiber Strength Its Effect on knitting Yarns and Knitted Fabrics. America's Textiles (Knitter Id) AT 4, 40-43,(1975).

14.

Simpson. J. , Techniques for Evaluating Carding I? and Sliver Quality, Amer. Textile Rep. Bul. AT2, 40, 42, 44, 50, 52 (1972).

15.

Simpson. J. and Fiori, L.A. How Yarn Twist Affects Yarn Uniformity and Imperfections, Textile Res. J. 45, 136 137 (1975).

16.

Ward, D. , Research Reveals Hidden Potential in Cotton Knitting, Times 43, 34 35 ( 1974).

17.

Wolfgang, W.G. and Gradel, G. , Improving Krittability Chemically Finishing Cotton Yarns, Textile Man f 99 17 18 (1972).