Different spinning technology has different effects on […]
Different spinning technology has different effects on the physical properties and appearance of the yarn, and even makes the characteristics of the final product different. At present, the five practical spinning processes of ring spinning, cluster spinning, rotor spinning, air-jet spinning and vortex spinning have attracted much attention from textile enterprises, whether in terms of output and quality, or in terms of yarn structure and characteristics. , All have their own uniqueness.
Ring spinning is currently the most widely used and most versatile spinning method on the market. It is widely used in spinning production of various short fibers, such as carding, combing and blending. Ring spinning is a spinning method in which drafting, twisting and winding are carried out at the same time. The roving is drafted to the required yarn number in the drafting system, and then the steel ring and traveller are added. Twist and wind to form a yarn.
Due to the drafting effect, the width of the strands in the main drafting zone is several times the diameter of the spun yarn. At this time, each fiber is in a free state when it reaches the front nip line. When these fibers leave the front nip line, they are twisted together, thus forming a spinning triangle. The twisting triangle of spinning prevents the edge fibers from completely entering the yarn body. Some edge fibers leave the main body to form flying flowers. Many edge fibers are twisted into the yarn body at one end and hairiness is formed at the other end. These fibers not only have a negative effect on the uniformity and elasticity of the yarn, but also have an extremely unfavorable effect on the strength of the yarn. In addition, the fibers outside the triangle area receive the greatest tension during twisting, and the fibers in the center receive the least tension. Therefore, the initial tension of these fibers during yarn formation is not equal, which affects the strength of the yarn.
The fibers in the ring-spun yarn are basically arranged in a spiral line, so that the fibers are entangled inside and outside the yarn. The yarn has a compact structure and high strength. It is suitable for various products such as thread making, weaving and knitting. Although the structure of the ring-spun yarn is relatively tight, the surface of the yarn is relatively disordered and the finish is poor.