Card sliver contains more short fibers and neps impurities, and the straightening parallelism and separation degree of fibers are not enough to meet the spinning requirements of high-grade textiles. Therefore, textiles requiring high quality should be spun by combed spinning system. In addition, combed yarns are mostly used in some special yarns.
A combing spinning system is formed by adding combing process between carding and drawing processes in the combing spinning system. The combing process is composed of a combing preparation machine and a comber. Its main functions are:
(1) Eliminate short fibers in sliver, improve fiber length regularity, and create conditions for improving yarn evenness and yarn strength.
(2) Remove neps and impurities between fibers in order to improve the appearance quality of yarns.
(3) The fibers are further straightened, parallel and separated to improve yarn evenness, strength and luster.
(4) Make evenly evened combed sliver for the next process.