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Nassar, M.A.A.1, M.A.M. Negm2, E.I. Ibrahim Abbas 1., M. I. El Bagoury3 and Eslam E.El –Sayed3
1Fac. Agric., Saba Basha, Alex. Univ., Egypt.
2Cotton Research Institute, Agric. Res. Center, Giza, Egypt
3 Cotton Arbitration and Testing General Organization
The main objective of the present investigation is to evaluate the spinning efficiency for different commercial cotton varieties in addition to a new promising of Egyptian cotton using two spinning systems i.e., ring and compact spinning. Two Egyptian cotton categories were tested in this study, ElS & LS categories. The first one is an Egyptian cotton genotypes named Giza 88, Giza 92 belong to the category of Extra-long staple varieties in addition to a new promising variety Giza 93 which also belong to the same category . The second is the long staple commercial genotypes named Giza 86 and new promising cross namely Giza 86X10229 (New cross). The Egyptian commercial cotton varieties and promising crosses were spun into two different spinning systems (compact and conventional ring spinning) and four different yarn counts (60’s, 80’s, 100’s, 120’s and 140’s on the same twist multiplier (4.2).
The results obtained that compact spinning system offers better utilization of fibers and increases the spinability of the Egyptian cotton. In addition, there is a high correlation between the spinning system and yarn count on its physical and mechanical properties.
The new promising cross Giza 93 recorded the highest values of Single yarn strength (g/tex), elongation (%), yarn evenness (C.V. %) and Lea Count Strength Product which gained by the compact spinning system at yarn count 80’S compared with the cotton variety Giza 88 at the same yarn count and spinning system. However, the highest imperfections yarn values (thin places, thick places and neps count /1000 m) were positively associated by the cotton variety Giza 88 which spun at the 140’S yarn count and the ring spinning system.
The second experiment indicated that the best yarn quality for strength (g/tex), elongation (%), yarn evenness (C.V. %) and Lea Count Strength Product were recorded by compact spinning system of the cotton new cross namely Giza 86X10229 when spun at 40’S yarn count. On the other hand, the lowest values of the same traits were possessed by the cotton variety Giza 86. Meanwhile, the cotton variety Giza 86 supposed the highest imperfections yarn values (thin places, thick places and neps count /1000 m) with ring spinning system and 100’S yarn count.
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