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In this work, five types of combed cotton spun yarn, selected from tex 7.38, 5.95, and 4.22, with a twist factor ∝t=4300 (tex system), were manufactured via alternative spinning methods (ring and compact). These yarns were processed from Egyptian extra-long staple cotton: G45, G93, G88, G92, and Pc (a) (a promising crossed type). In addition, yarn of tex 7.38 (compact) was produced from long staple cottons G86 and Pc (b) (another promising crossed type). The other two yarns from the five type of yarns selected from tex 15 and 20, ∝t=3600, were spun combed and carded ring only via using Egyptian cotton (medium long staple), G80, G90, and Pc (a) (a promising crossed type).Each yarn tex was processed from any of the latest types of Egyptian cotton, using experimental methods of measurement, which are different from the usual methods used. Yarn diameter was calculated using the Pierce formula. Yarn circular cross-section area (CSA) was determined and consequently the yarn breaking strength in mega Pascal [Mpa] was counted. Also, the toughness of each yarn was estimated. All these calculated values, for the different yarns, made from upgraded Egyptian cotton, were tabulated, sampled, graphed, and analyzed. The range of the yarns’ breaking strength was found to be from 244 (G45) to 231 (Pc(a)), their breaking extension changes were from 5.41% (G45) to 4.68% (Pc(a)). Consequently, their toughness varied from 6.6 Mpa (G45) to 5.41 Mpa (Pc(a)).Textile materials are part of material science, which uses engineering units to address the global market. This improves market tolerance of new products suitable for the inherent properties expressed in engineering units. These engineering units help the global spread of these new products, where they are applicable and practically reliable. To make the Egyptian cotton industry more known globally, there are several methods; one of them is the use of engineering units to facilitate its use and application. Therefore, the present work will participate partially in spreading our textile industry to the global market. |
