What is FDY polyester yarn
Time:
2021-12-20 16:19
Source:
Fully stretched FDY polyester yarn. It has nothing to do with the production process, but it is now widely circulated. It is used as the code name of the spinning and drawing one-step process. Low-speed spinning and high-speed drawing and winding can be used. The two processes are completed on a spinning and drawing combined machine. , This production line has low production cost, stable quality of finished products, less hair breakage, and good dyeing uniformity.
The difference between dty fiber and FDY polyester yarn:
FDY polyester yarn elongation and shrinkage are two concepts. Elongation refers to the percentage of polyester filament elongation after being stressed; shrinkage refers to the percentage of the ratio of the polyester filament's shrinkage length to the original length after being heated. Polyester is an important variety of synthetic fibers, and it is the trade name of polyester fiber in my country. It is a fiber-forming polymer made of purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reaction— —Polyethylene terephthalate (PET), a fiber made by spinning and post-processing.
Refers to incompletely stretched chemical filaments with an orientation degree between unoriented filaments and drawn filaments obtained by high-speed spinning. Compared with undrawn yarn, it has a certain degree of orientation and good stability. It is often used as a special yarn for FDY polyester yarn. Fdy is a stretch-textured yarn. It is made by using POY as the original yarn and processed by stretching and false twisting. It often has a certain degree of elasticity and shrinkage.
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