Introduction
FDY, POY, DTY, ATY, can you tell the difference between these filaments?
1. FDY fully drawn yarn:
Full name: FULL DRAW YARN fully drawn yarn (called fully drawn yarn in Taiwan).
Synthetic fiber filaments further produced by spinning and drawing. The fibers are fully stretched and can be used directly in textile warping processes.
Conventional fully drawn yarns include polyester and nylon, both of which are chemical fiber filaments. FDY fabric feels smooth and soft and is often used to weave silk-like fabrics. It has a wide range of uses in clothing and home textiles.
2. POY pre-oriented yarn
Full name: PRE-ORIENTED YARN or PARTIALLY ORIENTED YARN.
It refers to the incompletely drawn chemical fiber filaments obtained by high-speed spinning with an orientation degree between unoriented yarns and drawn yarns. Compared with undrawn yarn, it has a certain degree of orientation and good stability, and is often used as a special yarn for drawn false-twisted textured yarn (DTY).
3. DTY stretch textured yarn:
Full name: DRAW TEXTURED YARN.
It is made of POY as raw yarn, which is stretched and false-twisted. Often have a certain degree of elasticity and shrinkage.
4. ATY air textured yarn:
Invented by DuPont in the United States, the principle is to use air jet technology to intertwine the filament bundles to form irregular twisted filament loops, so that the filament bundles have fluffy terry-like yarns. The processed textured yarn has the properties of both filament and staple fiber yarns, with strong wooly feel, good hand feeling, and better coverage than staple fiber yarns.
use
Suitable for woven and knitted, using air texturing technology, it can be made into medium or fine fineness monofilament or multifilament, or core-covered imitation wool, imitation linen, imitation cotton, etc., which is called imitation yarn textured yarn, and can also be processed Coarse fiber yarn used for carpets, sofas, and tapestries. There are four types of raw filaments that can be discharged from a general air texturing machine. The raw filaments can be single filaments or pre-oriented filaments. The single filament fineness of general textured yarn is lower than 2.8 DTEX (2.5D). In order to increase the number of loops in the yarn, the oil content of the raw yarn should be low.
physical properties
Air-textured yarn is superior to raw yarn before deformation in terms of bulkiness, air permeability, gloss, softness, etc. The fineness is 10-15% higher than that of the original filament. The boiling water shrinkage remains at about 3%, but the strength decreases by 40%, because only a small part of the monofilament is stretched, but it bears the bearing capacity of the entire filament bundle.
5. Other types of chemical fiber filaments:
Spun yarn: undrawn yarn (conventional spinning) (UDY), semi-preoriented yarn (medium speed spinning) (MOY), highly oriented yarn (ultra-high speed spinning) (HOY)
Drawn yarn: low-speed drawn yarn (DY), full yarn (one-step spinning method) (FOY)
Textured yarn: conventional textured yarn (DY)
6. Identification method:
1. Hand pulling method:
Generally, POY can be pulled longer, while FDY can be pulled shorter. Because POY is a pre-oriented yarn, it is not fully stretched, and the remaining elongation must be more than 50%; while FDY is a fully oriented yarn, and the remaining elongation is generally more than 40%, which is relatively stable.
2. Appearance identification method:
DTY fiber is curly, while POY and FDY fibers are straight. FDY has better strength, while POY has less strength.
7. The difference between filament and staple fiber: 1. Filament (FILAMENT) is a continuous filament obtained by processing natural or chemical fibers. It has not gone through the cutting process and is divided into monofilament and multifilament. 2. Short fiber (SPUN) refers to fibers with a length of several millimeters to tens of millimeters, such as cotton, wool, hemp and other natural fibers. It can also be made from cut filaments.
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