Study Of Technology And Performance Of First Embedding Composite Yarn

The compound spinning can produce a characteristic, combinatorial and structural yarn, provide the possibility of compatibility of the different textile fibers, bring some variant yarns, and expand the variety of yarns. Therefore, it has become a tendency. The first embedding composite spinning is a new spinning technology which is developed in the base of composite spinning. The yarn can be outputed directly on the traditional ring spinning system which is reformed. The system has unique design. First, the short fibers and the filaments are wrapped and then are combined with another composite fibers. So short fibers are embedded well in the body, and are reduced signficantly in yarn hairiness. Stabily triangular platform can effectively eliminate accident drafting. And the yarn is very good. The filament and staple fiber are embedded in an effective manner, which forms a stable yarn and the stength is enhanced. Therefore, the system can signficantly improve the quality, and increase utilization of the fiber.The influence of various factors, including roving spacing, roving and filament spacing , eccentricity, twist factor and filament pre-tension was examined in technology. And the effect of the factors on performance of the first embedding composite spinning was also studied for analyzing the results of the performance. The results show that the optimal condition was 12mm in roving spacing, 2mm in roving and filament spacing, -2mm in eccentricity under the same experimental parameters.A comparative study of ring spinning, sirospun, sirofil, first embedding composite spinning was performed to realize the advantages of first embedding composite spinning, indicating that first embedding composite spinning had high performance of strength and elongation, low hairiness, better uniform evenness in comparison to ring spinning, sirospun, sirofil. Meanwhile, because of the drawbacks of the first embedding composite spinning, the second embedding composite spinning was established by Professor Xu. To understand their performance, the analysis was performed on experimental datas. In terms of mechanism, a dynamic model of first embedding composite spinning in pseudo stationary condition was established. The convergence angle was obtained to solve the imbalance problem of first embedding composite spinning. Under the condition of suitable twist factor, the result was obtained that the process of yarn was the more stable, and performance of yarn was better. The twist of first embedding composite spinning was analyzed in detail to guide production and practices.