FDY and DTY are actually spinning processing methods, which do not specifically refer to a certain material. They are mainly used in the production of polyester and other fabrics.

FDY is the abbreviation of full draw yarn, which is called full draw yarn in Chinese. It is a processing method after spinning. DTY is the abbreviation of draw texturing yarn, which is called stretch texturing yarn in Chinese. The difference between FDY and FDY is that there are many false twisting processes.

The so-called false twist is that when the silk is twisted in a certain direction during subsequent processing, the silk is still straight when wound. But when relaxed, it will shrink and fluffy. FDY does not contract when it is relaxed.

The detail difference between DTY and FDY is that the different drafting speed of fiber bundle leads to the different process. Here, there is also a kind of POY. DTY is a kind of deformed silk belonging to POY. After POY passes through a super feeding high-temperature equipment, it produces a more curly DTY, so the DTY fabric will be softer and fluffy.

The different drafting speed of fiber 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. FDY fiber is more straight and POY is relatively more curved.

POY: DTY is a deformed wire belonging to POY. FDY and DTY are produced by process differences in production, and different processes correspond to fabrics with different needs.