Brief analysis on why regenerated cotton staple fiber should be post processed

  Because the primary fiber (winding wire) of regenerated cotton staple fiber has low strength, elongation, high thermal shrinkage and poor hand feeling; Therefore, in order to enhance the practicability (applicability) of regenerated cotton staple fiber and eliminate static electricity as much as possible, it needs to be post processed.

  The post-processing procedures are mainly:

  Bunching, drafting, oiling, crimping, heat setting, cutting and packaging

  Cluster - Preparation;

  Drafting - improve orientation; Strength increases and elongation decreases; The thermal shrinkage decreased;

  Oiling - Requirements for spinning and textile processing;

  Curl - increase the holding force; Improved hand feel;

  Heat setting - improve crystallinity; The thermal shrinkage decreased and the hand feeling improved; Strength increases and elongation decreases;

  Cutting and packing - Product specification requirements.

  The post-processing process of regenerated cotton staple fiber is indispensable, otherwise it will bring a certain negative impact on the finished polyester product. Therefore, the post-processing process of polyester staple fiber should be completed step by step in order to improve the quality and corresponding performance of the finished product.

  [detailed explanation of production process in the production process of regenerated cotton staple fiber]

  1、 Qinghua and coiling: pour the polyester staple fiber into the turntable to disrupt and combine the original regular fibers to form a coiled fiber block;

  2、 Carding, slitting, the carding machine continues to carding and splicing large coiled fibers into small strips;

  3、 Roving: the sliver fibers are adjusted to the required number by roving and spinning frame;

  4、 Splicing: the splicing machine twists a single yarn into the required number of strands;

  5、 Twisted and loose tube: the made strand is made into twisted yarn or bobbin for dyeing;

  6、 Dyeing and sub packaging: dye according to the color required by customers, and deliver goods in tubes.