rawyarn

, as well as some recycled cotton, such as unified broken seeds, cut flowers and fine Wait, in use, we must grasp the scale and use it reasonably. According to the above analysis, after the cotton blending design scheme is established, some related processes in production can be suggested, and a certain process can be effectively controlled in a targeted manner, the production initiative can be mastered in advance, and the quality hazards that may be caused by raw cotton are in the yarn Eliminate before, and should be controlled and eliminated as early as possible to play a role in forecasting.1.

Secondly, it is necessary to take into account the raw cotton reserves, large inventory can be strict, small inventory can be loose, so as to avoid difficulties in implementation. Generally speaking, the smaller the difference between the raw cottons, the better the difference. As for the short pile, it can cause unevenness in the structure of the yarn due to the floating state during the drafting Wholesale Polyester Color Yarns process, which causes it to undergo tension Weak loops, and many short piles have poor cohesion between fibers, and the chance of slipping when pulled is also increased, so it is not conducive to the strength of the yarn, for example: neps, impurities, hairiness, etc. in the yarn, under the same process ,

Directly determined by the nature of the raw cotton. Various indicators and the range of differences of raw cotton can be strict and loose at the time of formulation. In short, the cotton blending work can no longer adapt to the current situation of increasingly fierce competition in production and market. Improved. Taking the strength of the yarn as an example, the explanation is as follows: The main indicators of the physical properties of raw cotton that affect the strength of the yarn are length, fineness, maturity and short pile rate. The cotton blending must consider both the current and the future, both the key varieties and the general varieties. According to the spinning principle and spinning experience to guide the blending of cotton. 3. 2.

According to the specific data of the physical properties of raw cotton, the cotton blending should be controlled to ensure the physical properties of the blended cotton, and to ensure that the indicators of the raw cotton are stable.

When weaving with yarns with high unevenness in short segments, there is a high probability that several thick knots or details are juxtaposed on the cloth surface, which is prone to fabric defects and has a large impact on the quality of the cloth. In different parts of the same fiber; this heterogeneity of chemical fibers is better than natural fibers, but there are still some differences in properties.

And during the weaving process,

it also leads to an increase in the polyester raw materials factory breakage rate and a decrease in production efficiency. It is because the number of fibers in the cross section of the sliver is randomly distributed., most of the time it manifests as The rise of defects or the appearance of very large defects sometimes appear as mechanical waves. This unevenness is not only manifested between the roots but also the roots.

When the 'jumping light' is serious, consider replacing the dye to improve the 'jumping light'. The series of light fastness on the dye color card refers to the series at the standard concentration I: 1, so when the reactive dye is dyed light color, it depends on the series of the corresponding concentration on the dye color card, such as 1/6, 1/12 , 1/25 and so on. Some large companies require 4 layers of color matching for thin, transparent woven fabrics and knitted fabrics. There are few photosensitive dyes, such as Ciba clone yellow CR-01, especially Ciba clone yellow C-2R. If so, they cannot be added.

For example, most dyes have a slightly darker red light after the color light is stable. General customers require at least 3 prototypes, that is, A, B, and C samples, and sometimes 12 samples are required. 2 ､ Recognition of samples When the customer's opinion differs from the actual situation, the possible light source problems should be considered, and the customer should be communicated. 3 ､ Confirmation of the production of large cargo samples (head cylinder samples) The color and light requirements for the production of large cargo samples should be strictly in accordance with the customer's approval, and the original samples should be used as the basis for the confirmation samples. 2 ､ Metamerism Jumping is one of the most common problems in proofing.

The effect of three automatic adjustment states on the driving end break. When the machine is started, the gears have a large impact and vibration, and there are different degrees of transmission time difference, which causes the transmission to be out of synchronization, and a large number of head breaks will also occur. Relation between traveller weight and spinning tension The traveller's mass is too heavy, which makes the angle of the balloon smaller, it is easy to touch the bobbin head, and when the yarn is instantaneously started, the resistance is large, which increases the winding of the yarn Tension, when the winding tension is greater than the strength of the yarn,

it will cause a break. After repeated adjustment tests, the parking position is adjusted to the half position of the forming cam and the rotor is started when it comes into contact with the rotor. Equipment condition It is very important to ensure a good equipment operating condition. In short, in order to reduce the decapitation of driving, we must take measures from various aspects, reasonably adjust the cotton distribution,

formulate reasonable processes and operating methods, and maintain the operating status of the equipment, adjust the conflict between tension and strength, and test and adjust the best. When the relative temperature and humidity is low, the fiber cohesion is poor, and the short fibers are exposed, resulting in low yarn strength and severe end breakage. The shorter tail yarn will be broken during doffing, which will increase the end break.

Therefore, according to the balloon shape, tension, and the distribution of broken ends, the reasonable selection of Polyester DTY Yarns the traveller quality is very effective for driving broken ends. Analysis of the reasons for the equipment The use of the ring is very critical. When driving, it will cause the twisting part and the draft part to run out of synchronization, resulting in a large number of broken heads. The strength and production efficiency decrease. Under the action of the airflow that rotates with the bobbin, it will curl up on the yarn guide hook or attach to the adjacent yarn, causing a large area flapper, increasing labor intensity and affecting the driving speed.

The textile industry is a traditional labor-intensive industry with many production processes, high process requirements, multiple labor, and low profits. Wholesale Polyester Color Yarns tail yarn is left when winding, reasonably determine the clearing parameters, and effectively control the winding of the winder. Analyze, demonstrate, and transform the links with high energy consumption. The fourth is to save energy by making good use of peak, valley and flat price differences. While improving product quality in the fierce market competition, we must pay more attention to energy conservation and consumption reduction.

The second is energy-saving management. At the same time, the production rate of each process should be maximized. Such as hanging the falling roving directly on the spare hanging spindle or running hanging spindle, reducing the labor of the intermediate link. The power consumption index is decomposed into sections and teams, and measures for each link are implemented to reduce rovings, spun yarns, and empty spindles.

To ensure that the roving is not bad, control the remaining number of rovings when the roving is changed; control the return rate to ensure that the spun yarn does not touch the steel ring or mill ring, reduce the bad yarn, and ensure that the spun yarn is well formed. Such as the use of carding technology to eliminate the roll, the use of thin-coupling technology can reduce 2/3 doffing, and the labor between spinning and winding can be eliminated.

Combing ensures less lint, multiple rows of lint and neps. Offices should be automated to improve work efficiency and reduce duplication and inefficient labor. The electronic yarn clearing device on the winder is used to remove the splicing defects, shorten the splicing time, reduce employee training time, increase worker stands, and reduce labor. Generally, the spinning frame adopts automatic collective doffing or intelligent doffing trolley to save labor. Equipment is contracted, charter flights are delivered to people, and the working environment is improved.

Based on the analysis of the reasons, polyester raw materials suppliers take the following measures: strengthen the induction training of new workers, strengthen the sense of responsibility, and correctly implement the operating method; strengthen the maintenance to ensure the state of the machine; strengthen the inspection and tracking; appropriately expand the range and number of twist tests; Twist test of the alarm bobbin removed by the yarn and automatic winder, and found that the twist yarn defect organization is tracked to eliminate the bad mechanical condition; strengthened the quality inspection of the night shift maintenance workers and doffers; record and correct the bad mechanical condition .

For this reason, in the production process of cotton yarns, more and more attention and attention have been paid to the testing, data analysis and control of 100,000 meters of yarn defects, especially with the development of electronic yarn clearing technology of automatic winders and the improvement of splicing quality. It is too much. Such yarn defects are usually caused by high short fluff rate, low maturity, and high defect content of the raw materials.

Reduce the number of yarn defects and improve the quality of the yarn. The main reason is that the doffer pulls out the spindle belt when cleaning the spindle with a brush. From the origin, A2 yarn defect belongs to raw material yarn defect, and it appears as short, small, and more distributed on the cloth surface. The diameter of the deviation position of the spindle belt is smaller than the diameter of the spindle disk, resulting in a strong twisted yarn. Although small yarn defects are reduced, harmful large yarn defects are difficult to remove, and knots increase; and the winding efficiency is significantly reduced and the cost is increased. Through these measures, we can significantly reduce A2 yarn defects.

To this end, technical personnel carry out research and research. After exploration, the heights of the plain weave fabric heald frames are 74mm, 72mm, 70mm, and 68mm; the heights of the two upper and lower twill weave fabric heald frames are 74mm, 72mm, 70mm, and 74mm; the heights of the three upper and one upper twill weave fabric heald frames are 72mm, 70mm, 68mm, 66mm, 72mm, 70mm; the heights of the four upper and lower twill weaving fabric heald frames are 68mm, 66mm, 64mm, 62mm, 60mm, 64mm.5 / 440. The principle is: constant air pressure

Especially in spinning Draw Texturing Yarns Suppliers, the large and small yarns have a higher spinning tension, which will cause end breaks and hairiness. Only the equipment for removing foreign fibers is installed in the open and clean cotton system. (5) It is recommended that the percentage of immature fiber content between a batch of raw cotton bales and bales in mixed cotton is within 2%, and the percentage of immature fiber content between batches and batches does not exceed 0. Should be equipped with tensogiet tensiometer as much as possible to ensure the quality of the original yarn.

These are very important to reduce the neps. Therefore, it will affect the production and quality in spinning production. Raw cotton mixed with these foreign fibers with different dyeing functions will cause dyeing defects in downstream processes such as knitted fabrics and woven fabrics, which will not only deteriorate the physical appearance quality, but also cause claims for spinning enterprises and generate economic losses.

Carding card sliver contains neps of 80 grains / g,

maximum 200 grains / g and minimum 50 grains / g. The basic conditions for applying this technical system must be to separate and open the fibers in the process of opening and cleaning cotton, to make the fibers free and single fiber as much as possible. If the opening and cleaning system is not equipped with a device for removing foreign fibers, the efficiency of the electronic yarn clearer of the winder will be cut about 40 times per 100,000 meters. (2)

The removal of impurities in raw cotton and the increase of neps and lint in Kaiqing cotton production are in contradiction. SCFO foreign fiber detection and separation system is installed in the feeding part of the card. In the process of opening and removing cotton, the neps increased to 400 grains / g, the lowest 200 grains / g and the highest 700 grains / g. (1) As the dyeing properties of immature fibers and mature fibers are different, uneven distribution of immature fibers during spinning will cause cross-section defects in the defective cloth. Under the same conditions, it will increase neps and short fluff, increase yarn breakage, and produce unstable production.

When spinning, these Wholesale Polyester Color Yarns can easily cause yarn breakage and reduce work efficiency. 2. 4. 7. The link of acquisition is very important to prevent mixed levels and control the 'three wires'. 3. If no heterosexual fiber is found, indicate 'not found' in the 'heterosexual fiber' column of the inspection certificate;

For colored fibers, degrade according to the quantity. Heterosexual fibers are mixed into cotton, which is not only difficult to remove during the spinning process, but also is broken or carded into shorter and finer fibers during the impurity removal process, forming a large number of fibrous small defects. The jagged state should be kept intact, no burrs, no skew, no bends. Here, the heterogeneous fibers are divided into two categories, one is other fibrous substances that are not cotton fibers, and the other is colored fibers.

Let companies with good product quality taste the sweetness, and let the crude and adulterated adulterers suffer. A percentage point higher, the seed cotton loss of 2% to 3%, because the cotton seed hair rate is high during the tide flower processing, so tide flower will reduce the clothing; In addition, the dry flower wet flower is also called exposure flower, the instrument is not easy to find in the acquisition, Its harm is the same as that of Chaohua, so special attention should be paid in the acquisition. 3. Adhere to one set of six trials, high quality and competitive prices, and stack according to quality. Definition and harm of foreign fibers Foreign fibers refer to non-cotton fibers and colored fibers mixed with cotton that have a serious impact on the quality of cotton and its products, such as chemical fibers, hair, silk, linen, plastic film, plastic rope, dyeing Thread (rope, cloth), etc.

Enhancing law enforcement Cotton quality standards are mandatory national standards. Fibers increase the lint rate; second, tide flowers are easy to heat, and the heat will reduce the strength and color of cotton, and it is easy to generate heat when the tide flowers are processed; third, the tide flowers also affect the weight.. 5. The tide flower is very harmful to cotton quality. Processing link The processing link has a greater impact on lint, silk, linter, and impurities in lint. When the moisture regain is high, the fiber rigidity is poor, and it is easy to twist into neps and ropes in the process of ginning and sieving. The fiber has a strong adhesion to the cottonseed during the tide

After such a small change, the polyester dty yarn supply method will be adjusted, so that the original air supply from both sides of the fan will be changed to a flat air supply. The small cotton bundles can be directly and uniformly shot on the surface of the dust cage,

reducing the bulk of the fiber into the dust cage Condition, so that the horizontal uniformity of the lap is improved. Using the balance adjustment device The balance adjustment device adjusts the cotton feeding speed according to the thickness change of the cotton layer, so that the cotton feeding amount per unit time is kept constant. In use, the leverage ratio should be adjusted, and the best point is selected, that is, adjusted by the “forward correction method”.

In the case where the rolls meet the weight standard, the 'V' curtain entrance gap is changed to change the average thickness of the feed cotton layer. At this time, if the weight of the roll is still within the standard range, the leverage ratio and The original standard average thickness of the cotton layer is correct. You only need to adjust the inlet gap of the 'V' curtain to the original size to make a relatively uniform cotton roll.

If the “V” curtain entrance gap changes, the cotton roll produced is too heavy, indicating that the leverage ratio is too small, and the iron cannon belt movement is smaller than normal, so that the speed of the balance roller does not drop to correspond to the increase in cotton thickness.

Value. In this case, it is necessary to readjust the position of the fulcrum of the balance lever until the weight of the cotton lap produced meets the standard. Cancel the iron cannon and use autoleveling. Self-levelling is an effective measure to use microelectronic technology to transform traditional processes to increase the positive rate and the longitudinal unevenness of cotton rolls. It is the main content of modernization of rolls, and it also replaces manual operations with modern control technology to increase the positive roll rate and stabilize cotton. Reliable means of roll quality. Keep good mechanical condition.