Process Control Points For Developing 100S Pure Cotton Combed Yarn

Abstract: JC5. is mainly discussed.

The difficulties in the process and production, the measures taken and the effects achieved.

Key words: cotton fiber; yarn; technology; difficulties and measures

Because of its fine yarn density and high density, spinning of JC5.9tex is difficult, and its requirements for raw materials, technology, air conditioning, equipment and management are relatively high.

Its pure cotton products enjoy a high reputation in the international and domestic markets. They sell well and are well received by consumers.

The research and development of this product can provide technological guidance for enterprises and bring better economic benefits for enterprises. It has certain reference value.

1 raw material selection

JC5.9tex / 5.9tex 866 /10cm/&nbsp905.5 root /10cm 241.5cm satin cloth is a high count and high density pure cotton product. The variety requires: yarn evenness is better and strength is higher.

And neps should be few.

Therefore, Xinjiang long staple cotton with good quality, good color, good fiber uniformity, long length, short lint, strong strength and less impurities should be selected as raw materials to further improve the quality of JC5.9tex yarn.

2 difficulties and measures in the production process

2.1 spinning process

2.1.1 spinning process

FA002 automatic cotton grabbing machine FA102 single axial flow cotton opener to A006B mixer, A034 six roller opener, A036 combing needle, hatch opener, A092A mixer, A186 carding machine, A272F pre drawing frame, A191B bar winding machine, A201E combing machine, FA311 drawing frame, roving roving machine, spinning frame, winding machine.

Difficulties and measures in the production process of 2.1.2 spinning department

The quality requirements of the products in the spinning department are higher, the yarn quality fluctuates greatly, the yarn is thin, the yarn strength CV% value is large, the weak ring is much, so the broken ends of the yarn are many.

The principle of light weight and low speed technology is adopted to maintain the good running state of the machine and equipment, strictly enforce the operation method, and check layers at all levels.

2.1.2.1 opening and cleaning process

In view of the long length and fine fineness of long staple cotton, try to comb more and play less, so that the cotton fiber can be fully mixed, and the volume of the cotton rolls is low, and the fan speed is high.

The overall speed of the driver is low to ensure that the cotton rolls are uniform and well distributed.

2.1.2.2 carding process

In order to remove and reduce short fiber and impurities, the quality of raw strips and doffer speed should be grasper lightly. The sliver quantity is 16.5g / 5m, the doffer speed is 14r/min, and the gap selection of the tin cover plate is smaller than (mm):6, 6, 5, 5, 6. The speed of the main parts is low, and the speed of the cylinder is 305r / min, so as to achieve the effect of slow speed and subdivision comb.

2.1.2.3 pre merge and strip operation

The pressure of both ends of the leather bar should be well aligned, or the cotton sliver on the table will be broken easily, and the draft distance will be enlarged appropriately, so that the fiber will stretch parallel.

2.1.2.4 combing process

The surface of the comber should be kept clean. Sandpaper, alcohol and talcum powder are used to grind the pallet, and the web is even and flat. Output and pportation must be paid attention to. The best lapping degree must be paid attention to, and the technological parameters should be selected reasonably so as to obtain good evenness.

2.1.2.5 roving process

In the roving process, the tension should be well controlled, the tension should be controlled uniformly, the spindle speed should not be too fast, the roving twist factor and the roving ration should be selected reasonably, and the tension draft of the roving should be reduced to ensure the evenness of the evenness.

The main process parameters are as follows:

Roving quantitative 2.92g / M; roving twist factor 106; roving draft ratio 9.8 times.

2.1.2.6 spinning process

The drawing ratio of spinning is controlled more than 50 times, the twist factor is 410, the spindle speed is 16&nbsp300r / min, otherwise, the phenomenon of the traveller of the traveller is serious.

The roller with non processing soft roller can enhance the grip on the fiber, the pressure can not be too big, and the 10kg is better. In addition, we should strengthen the overhaul of the equipment drafting and twisting winding parts, control the spindle deviation, make the spinning twist uniform, the yarn strength is uniform, and the evenness is uniform.

In order to ensure the quality of spinning yarn, all yarn is pulled out by hand when doffing is done to avoid the damage of doffer to the surface of tube yarn.

2.1.2.7 other aspects

As the JC5.9tex yarn is thin, the operation of JC5.9tex yarn is very important. The storage of the cotton rolls must be wrapped with plastic film to prevent shaving fibers. The quality of the joint and the quality of the wrapped yarn are very strict. The operator should have a strong sense of responsibility, and select the experts and technicians to watch the car, so as to effectively guarantee the smooth production of JC5.9tex yarn.

Because of the above measures, the production of JC5.9tex yarn basically meets the requirements of weaving for yarn and internal control index of enterprises.

The main quality indicators of yarn are shown in Table 2.

3 concluding remarks

The development of the textile industry has enriched the textile consumption market. It has high technical content and high added value. Because of the use of 100% cotton fiber, the textile produced by the product meets the requirements of green and environment-friendly textiles, and has broad market prospects.

In production, we should pay attention to the selection of process parameters and strengthen the management of equipment, operation, air conditioning and so on, so the product quality has achieved the desired effect.