POY: Pre-oriented yarn, full name: PRE-ORIENTED YARN or PARTIALLY ORIENTED YARN. Refers to the incompletely stretched chemical fiber filaments obtained by high speed spinning between the unoriented yarn and the 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 stretching false twisted textured yarn (DTY).
DTY: Stretched textured yarn, full name: DRAW TEXTURED YARN. It is made by using POY as a raw yarn, stretching and false twisting. There is often a certain degree of flexibility and contraction. FDY: Full body silk. Full name: FULL DRAW YARN. Synthetic fiber filaments further prepared by spinning and drawing. The fibers are fully stretched and can be used directly in textile processing.
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