What is fdy polyester yarn? The difference between dty fiber and FDY fiber:
What is fdy polyester yarn? dty:: Draw texturing yarn. Also known as polyester low stretch yarn, it is a finished yarn that is continuously or simultaneously stretched and deformed on a machine.
FDY: Fully drawn yarn. It has nothing to do with the production process, but it is now widely circulated. It is used as the code name for the one-step spinning and drawing process. It can use low-speed spinning and high-speed drawing and winding. The two processes are completed on a spinning and drawing combined machine. This production line has low production cost and stable finished product quality, with less wool breakage and good dyeing uniformity
The difference between dty fiber and FDY fiber:
dty fiber is curly
FDY fiber is straight.
FDY
Polyester yarn elongation and shrinkage are two concepts. The elongation rate refers to the elongation percentage of the polyester yarn after being stressed; the shrinkage rate refers to the percentage of the shrinkage length of the polyester yarn after being heated to its original length. Polyester is an important variety of synthetic fibers and the trade name of polyester fiber in my country. It is a fiber-forming polymer made from 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 the incompletely drawn chemical fiber filament obtained by high-speed spinning with an orientation degree between unoriented yarn and drawn yarn. Compared with undrawn yarn, it has a certain degree of orientation and good stability, and is often used as a special yarn for drawing false twisted textured yarn (fdy). FDY is a stretch textured yarn, which is made of POY as raw yarn and processed by stretching and false twisting. It often has a certain degree of elasticity and shrinkage.
