How To Eliminate Foreign Fiber? The Most Troublesome Problem Of High-End Textile Mills

Definition and harm of conductive fiber

Heterosexual fiber refers to the non cotton fibers and colored fibers mixed into cotton, which seriously affect the quality of cotton and its products, such as chemical fibers, hair, silk, hemp, plastic film, plastic rope, dyeing line (rope, Butch). Here we divide the foreign fibers into two categories: one is non cellulosic fiber, the other is cellulosic material, the other two is colored fiber.

Foreign fibers mixed into cotton can not only be removed in spinning process, but also be broken or combed into shorter and finer fibers in the process of removing impurities, forming a large number of fibrous fine spots. When spinning, these defects can easily lead to broken ends of yarn and reduce work efficiency. After dyeing, there will be various color spots on the cloth surface, which will seriously affect the appearance quality of the cloth, and ultimately affect the domestic sales and export of the products.

When cotton is found to be mixed with foreign fibers, it can be applied to professional fiber inspection institutions for inspection. At the time of inspection, 5% cotton bags were randomly selected from the unopened cotton bag, picked up by package, and no foreign fibers were found. "No" found in the "heterosexual fiber" column of the certificate of inspection, and the mixture of foreign fibers or colored fibers was found to be degraded according to the quantity.

Measures to control foreign fibers

Once foreign fibers and colored fibers are mixed into cotton, they can not be picked. To eliminate it is to eliminate it as a source of fire.

intensify law enforcement efforts

Cotton quality standards are mandatory national standards. Relevant departments should intensify publicity and training while strengthening law enforcement to clean up market order. Let the enterprises with good product quality taste the sweetness, so that the rough and adulterated adulterers will suffer a lot. Professional fiber inspection institutions at all levels should promptly accept the test of declared foreign fibers, safeguard the legitimate interests of cotton spinning enterprises, and promote the development of the textile industry.

Raising ideological awareness

The operators of cotton production enterprises should enhance their awareness of the law and improve their understanding of the importance of cotton quality. Rough manufacturing not only wastes valuable cotton resources, violates quality regulations, but also is very harmful to the establishment of corporate image and long-term development of enterprises, and it is a hidden danger of quality claims.

Grasp three links

Acquisition link

The quality of purchase is the basis of lint quality, and the acquisition link is very important to prevent mixing and mixing grade and control "three silk". Specifically, we should:

1) we should strengthen publicity so that the majority of cotton farmers will fully understand the importance of "four points" and ensure the consistency of quality from the source. Qualified enterprises can establish planting bases, implement factory management, implement order planting, establish interest communities with cotton farmers, and extend quality control to the fields.

2) the source of "three silk" is picking, drying, packing, storing and transporting several links. The parties are cotton growers and cotton traders. They should be preached to make them fully aware of the harmfulness of "three silk"; they are asked to pick cotton wrapped with cotton bags, stand up in a tall stand, do not pile up in bulk, and do not use non cotton yarn to tie up bags. The "three silk" seed cotton is superior in quality and high price, and the cotton pole is encouraged to sell cotton without "three silk" cotton with the help of the economic pole. After purchasing cotton into the factory, anyone who contacts with cotton must wear a hat and do not wear clothes that are easy to get rid of foreign fibers. Strictly control all kinds of items that may produce "three silk" into the cotton yard.

3) control wet flowers and dry seeds. Chao Hua is very harmful to cotton quality. First of all, it is easy to form a lot of Neps in processing. When the flowers are wet, the fiber has strong adhesive force on cotton seeds, and the chance of breaking off when they are stripped, it is easy to damage fiber and increase short staple rate. Second, it is easy to generate heat, while heat causes cotton to decline strongly and turn yellow. When processing flowers, it is easy to generate heat and cause fire; third Chao Hua also affects weight, seed cotton moisture regain rate of one percentage point per cent, seed cotton weight loss 2% to 3%, because of the high cotton seed head rate during processing, so the tide flower will reduce the clothing parts; in addition, dry seeds and wet flowers are also known as sunflowers.

4) stick to one trial and six, high quality and high price, and stack up according to quality. With the improvement of cotton quality requirements in textile mills, the traditional five tests have not been able to meet the requirements. For high-grade cotton, the micron value of fiber maturity should be added to the test, and it will be stacked according to the micron value.

Picking "three silk" links

The selection of "three silk" has now become an important production process for a cotton ginning enterprise, and the number of workers employed is equal to or even surpassed that of traditional cotton washing. The main task of this link is to remove harmful impurities such as "three silk" in seed cotton. Generally, it is done manually in the special workbench, and it can ensure the quality of cleaning. At the same time, it is also aimed at picking up the poor cotton, so as to improve the consistency of the whole batch of cotton flowers. If you use a dedicated workbench with a grid, you can also exclude some stiff flowers.

Processing link

Processing links have great influence on cotton neps, cords, short fibers and impurities. The following tasks should be emphasized:

1) control the moisture regain of seed cotton. When the moisture regain is high, the fiber stiffness is poor. In the process of cotton ginning and cotton screening, it is easy to twist into neps and wires. The fiber has high moisture regain, strong adhesion on the sawtooth, difficult to screen cotton and difficult to cotton, sawtooth easy to carry flowers, and easy to add neps and rope.

2) control the speed of the vehicle. The sawing shaft has a high rotational speed, and the impact force of the saw teeth on the fiber is large. It is easy to break the fibers and increase the short fiber in the lint.

3) zigzag state. The sawtooth state should be kept intact, no burrs, no skew, no bending. It should be repaired in time, otherwise the neps will be increased.

4) the four walls of the working box should be clean and free from burrs.

5) the gap between the saw blade and the ribs should be uniform, otherwise the fiber bundles caught on the saw teeth can not pass smoothly through the ribs, and will rub heavily on the side of the ribs.

6) according to the impurity content of lint, adjust the distance between the saw tooth and the miscellaneous rolling knife, and ensure that it does not drop white without touching the knife. As far as possible, the 1~2 level of impurity should be controlled below 1%, and the 3~4 grade is less than 1.5%.

7) try not to use leather cleaner. The use of leather cleaning machine can improve the appearance of lint and reduce the impurity of lint. However, because it uses high-speed spines to open and remove impurities, it will cause great damage to fiber. If the roller is not in good condition, it will produce a lot of neps and wires. It will also break some large impurities and increase the fine impurities that many textile factories can not remove.