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Definition and hazard of conductive fibers
Heterogeneous fiber refers to non-cotton fiber and color fiber which are seriously affected by the quality of cotton and its products mixed into cotton, such as chemical fiber, hair, silk, hemp, plastic film, plastic rope, dyeing line (rope, cloth), etc. . Here, the heterogeneous fibers are further divided into two types, one is other fibrous materials other than cotton fibers, and the other is colored fibers.
The heterogeneous fibers are mixed into the cotton, which is not only difficult to remove during the spinning process, but also is broken or combed into shorter, finer fibers in the removing process to form a large number of fibrous small defects. When spinning, these defects can easily cause the yarn to break and reduce work efficiency. After the dyeing of the woven fabric, various color points appear on the cloth surface, which seriously affects the appearance quality of the cloth surface and ultimately affects the domestic sales and export of the product.
If the cotton is found to be mixed with foreign fibers, it can be applied for inspection by a professional fiber inspection agency. At the time of inspection, 5% cotton bales were randomly selected from unopened cotton bags, and they were picked out by package. If no foreign fibers were found, the words “not found†were found in the “heterofiber†column of the inspection certificate; For colored fibers, the treatment is degraded according to the quantity.
Countermeasures for controlling foreign fibers
Once the foreign fibers and colored fibers are mixed into the cotton, they cannot be picked clean. Clear it to eliminate the "fire" and destroy it at the source.
The cotton quality standard is a national compulsory standard. Relevant departments should increase law enforcement and purify the market order while increasing publicity and training. Let the products with good quality products taste the sweetness, and let the crude and adulterated adulterers suffer. Professional fiber inspection agencies at all levels shall promptly accept the inspection of the declared foreign fibers, safeguard the legitimate interests of cotton spinning enterprises, and promote the development of the textile industry.
The operators of cotton production enterprises should enhance their legal awareness and raise their awareness of the importance of cotton quality. It is not only a waste of valuable cotton resources, but also a violation of quality regulations, and it is very harmful to the establishment of corporate image and long-term development of the company. The hidden danger of quality claims.
0 1
The quality of the acquisition is the basis of the quality of the lint. The acquisition process is essential to prevent mixing and mixing, and to control the “three wiresâ€. The specific should be:
1) It is necessary to strengthen publicity so that the majority of cotton farmers can fully understand the importance of the "four points" and ensure the consistency of quality from the source. Conditional enterprises can establish planting bases, implement factory management, implement order planting, establish a community of interests with cotton farmers, and extend quality control to the fields.
2) The source of “Three Wires†is in the process of picking, spreading, packaging, storage and transportation. The parties are cotton farmers, and they should be told to let them fully understand the harmfulness of “Three Wiresâ€; they are required to pick them with cotton bags. Packing cotton, spreading it over the shelf, not stacking it, not using non-cotton yarn to tie the bag; in the acquisition, insisting on not packing the cotton in the plastic bag, and implementing high quality and good price on the seed cotton without "three wire" inspection, using economic masts Encourage cotton farmers to sell without "three silk" cotton; after the cotton purchase into the factory, all the people who come into contact with cotton must wear hats, do not wear clothes that are easy to lose foreign fibers; strictly control all kinds of items that may produce "three wires" Cotton stacking site.
3) Control the wet flowers of the tide flower and the clothes dry seed. The flower of the tide is very harmful to the quality of the cotton. Firstly, the tide flower is easy to form a large number of cotton knots during processing. The adhesion of the fiber on the cottonseed is strong when the flower tide occurs, and the chance of breaking when peeling is large, and it is easy to damage. Fiber increases the rate of short velvet; secondly, the tidal flower is prone to fever, while the fever causes the cotton to drop strongly and the color to turn yellow. When processing the tide, it is easy to generate heat and cause fire. Third, the tidal flower also affects the weight, and the seed cotton regains the rate. One percentage point higher, the seed cotton loss is 2% to 3%, because the cottonseed hair rate is high during the processing of the tide flower, so the tide flower will reduce the clothing share; in addition, the wet seed flower is also called the sun flower, and the instrument is not easy to find in the acquisition. Its harmfulness is the same as that of the tide, and special attention should be paid in the acquisition.
4) Persevere in a test of six, high quality and good price, stacked by quality. With the improvement of the cotton quality requirements of the textile mills, the traditional one-test and five-finished products have been unable to meet the requirements. For high-grade cotton, the micronaire value of the mature fiber should be tested and the value of the micronaire should be divided according to the micronaire value. File stacking.
02
The selection of "three wire" has now become an important production process for ginning enterprises, and the number of labor is equivalent to or even exceeds that of traditional ginning and stripping. The main task of this link is to remove the harmful debris such as “three wires†in the seed cotton. In the cleaning method, it is generally better to manually pick it at the special workbench to ensure the quality of the cleaning. The core of the core is equal to the cotton to improve the consistency of the whole batch of cotton. Partial stiffness can also be ruled out with a dedicated workbench with a grid.
0 2
The processing link has a great influence on the neps, silk, short velvet and impurities of lint. The following should focus on the following tasks:
1) Control the moisture regain of seed cotton. When the moisture regain rate is high, the fiber is poor in rigidity, and it is easy to kink into cotton knots and ropes during the ginning and screen cotton process; the fiber has a high moisture regain and strong adhesion on the serrations, and it is difficult to screen cotton, and the saw teeth are easy to bring flowers. Flowers are also easy to add neps and skeins.
2) Control the speed of the car. The saw shaft has a high rotation speed, and the saw tooth has a large impact force on the fiber, which is easy to break the fiber and increase the lint in the lint; the feeding speed is fast, the cotton lap density is large, the wire is easily formed, and the short velvet is added.
3) Sawtooth state. The sawtooth state should be kept intact, no burrs, no skew, no bends. If abnormalities are found, they should be repaired in time, otherwise the cotton knots will be increased.
4) The walls of the work box should be kept clean and burr-free, and the passages should be smooth and unobstructed.
5) The gap between the saw blade and the rib should be uniform. Otherwise, the fiber bundle grabbed on the serration cannot pass smoothly between the ribs, and the ribs are rubbed sharply, which will produce a lot of wires.
6) According to the impurity of the lint, adjust the spacing between the sawtooth and the removing knife, and ensure that it does not fall white and does not touch the knife. The level 1 to 2 should be controlled below 1%. 3 to 4 levels are within 1.5%.
7) Try not to use the leather cleaning machine. The use of the leather cleaning machine can improve the appearance of the lint and reduce the lint of the lint. However, since it uses the high-speed licking roller to open and remove the impurities, the damage to the fiber is great. If the state of the licker is not good, a large amount of neps and skeins are produced. It will also break up some big impurities and increase the small impurities that many textile mills cannot remove.
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