The purpose of twisting is to fix the two single yarns into strands and obtain better quality conditions such as forming and strength. If you don't add it, the two single yarns will not be cohesive together, and will be separated by external force.
The purpose of steam characterization is also to obtain a certain moisture regain and improve the quality of the finished product, and the strength will increase after steaming.
Twisting is a necessary means to make the fiber strands into yarns. Before twisting, the bulk fibers are generally condensed into fiber strands. After twisting, the outer fibers of the fibers can be pressed into the inner layer to generate centripetal pressure, so that the strands are along Friction is obtained in the longitudinal direction of the fiber. The general woven fabric yarn needs to be twisted by a double twister to be woven.
Yarn twist refers to the physical and mechanical properties of the yarn, such as strength, elasticity, elongation, gloss, hand feeling, etc., it is necessary to change the cotton yarn by twisting, and the yarn is twisted by the fiber structure, in fact, the cotton yarn cross section is utilized. The relative angular displacement is generated to make the original parallel and parallel fibers and the yarn axis are inclined to change the yarn structure. The thick strip is gradually contracted by the width during the twisting process, and the two sides are gradually folded and rolled into the center of the yarn strip to form an addition. The 捻 triangle, in the twisted triangle, the width and cross section of the tampon change, from a flat ribbon, gradually into a cylindrical yarn.
