Polyester yarn

100% polyester dyed spun yarn

Spinning process:

1. Ring spinning:

Ring spinning is the most commonly used spinning method in the market. Ring spinning refers to the spinning process in which the drawn fiber bar of the sliver or roving is introduced by rotating the ring steel ring, the bobbin winding speed is faster than that of the steel ring, and the cotton yarn is twisted into the spun yarn, which is widely used in the spinning engineering of various short fibers. For example, in general combing, combing and blending, the steel ring is twisted by the rotation of the ring driven by the bobbin through the yarn strip. At the same time, the friction of the ring makes its rotation speed slightly less than that of the bobbin. The spinning speed is high, and the form of ring spun yarn is the conical helix that most of the fibers transfer inside and outside, which makes the fibers twined inside and outside the yarn. The structure of the yarn is close and the strength is high, so it is suitable for making thread, weaving and knitting and other products.

Ring spinning (combing) process:

Cleaning, carding, pre drawing, sliver doubling, combing, drawing, roving, spinning and winding

Ring spinning (carding) process:

Cleaning, carding, drawing, roving, spinning and winding

2. Airspun:

Air spinning does not use spindle, but mainly relies on several parts such as combing roller, spinning cup, false twist device, etc. The carding roller is used to grab and feed sliver fibers. The centrifugal force generated by the high-speed rotation of the carding roller can throw the fibers out. The spinning cup is a small metal cup, and its rotation speed is more than 10 times higher than that of the comb roller. The centrifugal effect produced by this is to discharge the air in the cup outwards. According to the principle of fluid pressure, the cotton fiber enters the air flow cup, forms the fiber flow, and moves continuously along the inner wall of the cup. At this time, there is a yarn head outside the cup, which leads out and connects the fibers on the inner wall of the cup. In addition, the drilling effect of the cup with the high-speed rotation of the yarn tail is like "feeding" the cotton fiber while kneading the yarn to connect the yarn with the fibers on the inner wall of the cup. Under the spinning tension of the yarn drum, the yarn is drawn continuously and continuously to complete the air spinning Process.

Characteristics of air spinning

Air spinning has the advantages of high speed, large volume, wide adaptability, simple mechanism and no spindles, rings and steel rings, which can increase the output of spinning by multiple times.

The difference between air spinning and ring spinning:

One is new spinning technology, the other is old spinning technology. Air spinning is air spinning, while ring spinning is mechanical spinning, which is twisting by spindle, steel bell and steel ring, and drafting by roller. Air spinning is to transport fibers by air flow, and twist them by one end. Generally speaking, ring spun yarn has less hairiness, higher strength and better quality. Air spinning process is short, raw materials are short, yarn wool, count and twist can not be very high, the price is also low.

In terms of yarn structure, ring spinning is relatively close, while air spinning is relatively fluffy and rough in style, which is suitable for jeans fabric. Air spinning yarn is generally thick.