What is FDY and DTY for textile fabrics? FDY and DTY process details

08-06 2020


What is FDY and DTY for textile fabrics? FDY and DTY process details, FDY and DTY are actually spinning processing methods, not specifically referring to a particular material, mainly used in the production of polyester and other fabrics.

FDY is the abbreviation of Fully drawn yarn, the Chinese name is: fully drawn yarn, is a processing method of the spinning back channel. DTY is the abbreviation of Drawn-texturing yarn, which is called in Chinese: 拉伸变形丝. The difference between DTY and FDY is the additional process of false twisting.

The so-called false twist is that the yarn is twisted in a certain direction during the post-processing, and the yarn is still straight when it is wound. But when it is relaxed, it will shrink and fluff up. FDY does not shrink in the relaxed state.

What is FDY and DTY for textile fabrics? FDY and DTY processes are explained in detail.

Here is the science of DTY and FDY polyester fiber spinning production steps.

Macromolecule slicing - high temperature into molten state - various stretching traction - fiber

DTY and FDY details of the difference lies in the fiber into a bundle of different drafting speeds lead to different processes, where there is also a POY, DTY is a deformation of the POY yarn, POY after a super-feed high-temperature equipment, it produces a more curly DTY, so DTY fabrics will be more soft and fluffy.

The different drafting speed of fibers leads to the birth of these Y. The drafting speed of FDY is about twice that of POY, which leads to different changes in the molecular structure of FDY and POY after stretching, with FDY fibers being straighter and POY being relatively more curved.

So in short, the difference between FDY and DTY in the textile industry is that DTY: stretched and deformed yarn, the fibers are rolled, FDY: fully stretched yarn, the fibers are straight.

POY: DTY is a deformed yarn belonging to POY. FDY and DTY are produced by the difference of process in production, and different processes correspond to different needs of fabrics.



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