At present, the process of spinning core-spun yarn has two kinds, in order to process polyester-cotton core yarn as an example.
Coarse comb System:
Cotton: Clear Flower a comb cotton one end and-roving-spinning (cored).
Cotton: Clear Flower a comb cotton a roll and a combed one after and 21 and 31 roving a spinning (core). In the actual processing process, the selection of core-spun yarn process, depending on the yarn requirements and the number of spinning count to decide, the general principle is, can use the coarse comb, without combing, if the use of combing system, the process can be shortened to reduce production costs. If there are manufacturers combed cotton all the unevenness rate, the smoothness and parallelism of the fiber is better, after a piece and can meet the requirements of the package.
Then, the process can take the following:
Cotton: Clear Flower a comb cotton a roll together a combed one after and a roving one spinning (wrap core).