Selection of spinning parameters
Because the physical properties of wool, silk, and linen fibers are quite different, the mutual cohesion of the fibers when blending chemical fiber fabrics is poor. The uniformity of the yarn line, wool grains, and hairiness are compared with those of all-wool yarns with the same number of properties. All very poor. Therefore, from the perspective of spinning, we must first rationally select the twist coefficient and twist direction of single yarns and strands, so that the strength, wear resistance, and elastic elongation of the spinning yarn can meet the requirements of high-speed weaving of rapier looms. The second step is to improve the uniformity of the spinning line and reduce the content of hair particles, hairiness and coarse details to ensure smooth weaving and stable quality of the finished fabric. 1. The selection of twist coefficient, twist degree and twist direction of single yarn and stranded yarn should not only be based on factors such as product style, feel, strength, etc., but also should fully consider the mixing of these three fibers. spinnability, and its impact on high-speed weaving of rapier looms. This variety uses wool, silk, and hemp fibers to blend chemical fiber fabrics in a certain proportion. Because hemp fiber generally feels hard and has strong torsion resistance, it is difficult to twist during spinning. Spun silk is slippery and waxy, and its cohesion is also poor. The feel of wool fiber is between the two, and its cohesion is better, so it is very difficult to spin. The selection of twist coefficient, twist return and twist direction is inappropriate, the yarn breakage rate in spinning and weaving is high, and the style and feel of the finished product cannot meet the design requirements. 2. In the spinning process, the main factors that lead to poor evenness and easy generation of hair particles and hairiness include: improper selection of process parameters, poor state of process components and machinery, unreasonable operation, and various kinds of stress during the finishing process. Accidental stretching caused by unexpected tension, large changes in temperature and humidity, and prompt cleaning work. Therefore, the spinning process must be modified for the requirements of single yarn production.
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