Engineering and Evaluation of a Unique Cotton-Covered/polyester-Staple-Core Yarn

A.P.S. Sawhney, K.O. Robert, G.F. Ruppenicker, R.J. Harper, and L.B. Kimmel


A now, sandwich-type method of producing a cotton-covered/polyester-staple-core yarn on a slightly modified ring-spinning frame has been developed. The method, which uses two cotton rovings instead of an earlier technique's one [10], produces a yarn whose cotton cover is strip resistant and sheathes the polyester core almost completely. Piecing of ends is also easy with the new method. Application and operation of the spinning retrofit are simple and cost effective. Certain quality parameters of a cotton-covered/high-tonacity polyester-staple-core yarn (65% cotton/35% polyester) produced by the now method are compared with those of traditional 100%-cotton yarn and 65% cotton/35% pill-resistant, regular-tenacity polyester staple intimate-blend yarn. A comparison of both fabrics, woven and knitted made with the polyester-staple-core yarn and a conventional, 100%-cotton yarn of an equivalent count shows that the cotton covered/polyester-staple-core-yarn fabric, although it looks and feels like a 100%-cotton fabric, is stronger, more resistant to tear and abrasion, and dimensionally more stable than the 100%-cotton fabric.

Reprinted from 1990 Proceedings: Beltwide Cotton Production Research Conferences pp. 707 - 712
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998