China Colorful Yarn Company

He believes that in theory, the holding force is greater than the drafting force. The live broadcast time is short, and many exciting contents cannot be launched one by one. Yesterday, the state tightened the requirements for epidemic prevention and control, which added uncertainty to the on-site training courses held on May 11-14.

Zhao Jianwei will broadcast 'Analysis and Control Method of Yarn of Single-face Knitted Shabby Shade Yarn' on WeChat Group of Chief Teachers. The 'hard end' of the spun yarn will affect the quality of the spun yarn, the end of the yarn, the stand and mood of the driver, and the production efficiency. In serious cases, it will increase the management workload and production costs, so cotton spinning companies are particularly concerned. Increase the jaw gap; 3. Zhao Jianwei shared specific methods with practical cases. Throughout the lecture, teacher Zhao Jianwei actively shared and interacted with netizens with profound theories, empathetic cases and passionate language.From 19:30 to 20:45 on the evening of March 21,

the 'Chief Engineer WeChat Group' successfully held 'How to solve the problem of heavy weight, large twist coefficient roving in the spun yarn', deputy editor and chief senior consultant Zhao Jianwei In the live broadcast class, other textile WeChat groups are broadcast live simultaneously, and more than an hour of content has attracted 826 online learning.. Increase the pressure of the third 'upper roller' (Including repairing the cradle defect and increasing the diameter of the top roller); 4. Starting online China Colorful Yarn Company training courses on May 11, according to the situation of the epidemic situation, we will determine the time to go to Jiangnan University for 'actual combat + exchange + question answering +

team building + results review + issuance of certificate of completion' training, this model allows students to learn more in-depth , More thorough and more integrated! After we communicated with several students who have signed up, they all think this is better. Seven kinds of situations and causes, put forward six major solutions and the key points and attention links in the implementation process, and proved the effectiveness of the measures with examples, and introduced two enterprises 

Megosztás a facebookon

Sd Yarn

The weight of the roving is normal after tracking, and there is no abnormality in the corresponding spindle. According to the quality problems that occurred, the following aspects were investigated: 1. The size of the upper and lower aprons, upper pins, and spacing blocks; 4. Since the weight of the roving has not changed, the total draft multiple of the spun yarn is only 11.

The degree of attenuation and buffering of the fast-rotating torque (equivalent to the disassembly torque) transmitted by the middle roller jaws to the rear roller through the whisker depends entirely on the degree of easy stretching of the whisker. Various considerations when designing the drafting process must not violate the drafting principle. The greater the drafting force in the rear zone, the harder it is for the whiskers to be stretched, and the more effectively the forward torque is transmitted to the rear roller. In this case, you can appropriately enlarge the roller gap and increase the roving twist factor to increase the average draft force and reduce the fluctuation of draft force. It is necessary to keep the sliver continuous, stable and proper twist to improve the sliver of the finished yarn. (2) Increase the twist of the roving so that the whiskers entering the drafting zone of the spun yarn retain proper twist, thereby maintaining a better roundness of the whiskers.

The diameter and position of the front and rear rubber rollers; 3.), the roving twist can be appropriately increased without affecting the production. Spinning principle and technological analysis The essence of drafting is the process of increasing the distance of the fibers in the whisker and redistributing the fibers in a longer position along the axial direction. If the back draft is large, the number of fibers entering the front zone is even less, which is not conducive to fiber control. 1.

A company produces Sd Yarn polyester Dahua T21S all year round, polyester with 100% Yizhen Dahua 38mm×1. However, a serious quality problem occurred in the production process, and the user's opinion was great. Replacement of a new cradle; 6.35. In this process, the fibers in the sliver must be well controlled.56dtex, the quality is relatively stable.25, and the data returned to normal after the test. Of course, the roving weight should be set reasonably when making coarse yarn. Recently, I received orders for T10S and T8S. Due to the small amount, the roving weight remained unchanged at 6

Megosztás a facebookon

polyester raw materials factory

5-1%, and it is sprayed into the cotton bales randomly with a sprayer. 2. . Spinning Pima cotton compact spinning varieties, equipped with new upper aprons and lower aprons that have been used for 1-2 months and have been maintained; the upper and lower aprons should be regularly cleaned, sorted and sorted, and the maintenance cycle generally does not exceed 2 Months. The surface is polished with a smoothness of 0. All sticky materials and intarsia adhered to the sliver channel should be cleaned with a soft dry cloth and then polished with a green environmental protection anti-winding agent.

After cleaning, blow dry with compressed air. Before the joint, check the U-shaped yarn guide rod, bell mouth, accumulation slot and front roller. The top roller is washed, cleaned, and dried with warm water at 43℃ every 3 days.3% and the sugar rate is 3. Spinning Pima cotton compact spinning varieties, equipped with 140 mesh grid ring, the maintenance principle of grid ring getting off the car is 'more blowing, less washing, frequent replacement'. (4) Roving top roller: Select a top roller with a shore temperature of about 76 degrees Shore. Around the top roller, the roving has a large stubble, and the spun yarn will wrap around the top roller and the roller as long as the broken ends are broken, making life difficult. Strengthening the configuration, maintenance and rational use of grid circles.

It is necessary to do a good job in the turnover of the top roller. (5) Spinner top roller: choose a top roller with a shore temperature of about 65 degrees Shore. Treatment with raw material sugar remover Add HD type high-efficiency raw polyester raw materials factory cotton sugar remover to 100 liters of 10-30 liters of aqueous solution, and fully stir for 5-10 minutes, then react into milky white for use.3.1mm, staple fiber index 8. (1)

Pre-roller rollers, strip-roller rollers and combing drafting rollers: choose Shaw 80-82 degree rollers, surface polished finish 0. After 48 hours in the dark, dry it and use it in the car. All quality indexes have reached the customer's requirements, see Table 2.8um, JY-Ⅱ colored AB paint is applied twice with 1:4 strokes, and it should be dried in the dark after 48 hours. Strengthen temperature and humidity control According to the requirements of Table 1, temperature and humidity adjustment, life is basically normal

Megosztás a facebookon

The fiber Polyester Color Yarns factory transferred from the cylinder by the cylinder is first thrown to the fixed cover plate, which has a strong effect and is easy to damage the fiber. From large to small; the use of gradual spacing can make the fiber realize displacement between the cylinder and the fixed cover plate.23mm.2 Re-quantitative carding quality and problems with the process The output has increased, and the amount of carded fibers per unit time has increased several times. The distance between the cylinder and the cover plate should be determined by the state of the adhesion surface of the fiber on the cylinder surface, which mainly depends on the following factors: (1)

The surface linear velocity of the cylinder, the higher the cylinder speed is, the higher the cover plate is. Therefore, if we only increase the output of the carding machine in terms of increasing the delivery speed, it will be subject to the carding quality and the drawing capacity of the subsequent process, and the quantitative increase cannot achieve a breakthrough. Under the condition of heavy weight,

the amount of fiber carried by the cylinder card clothing increases, the needle surface load increases, the cylinder speed increases, and the thickness of the air flow of the surface layer increases. 2. But the heavy weight process is not simply to improve the sliver weight, but on the basis of satisfying the carding effect of the fiber, give full play to the mechanical and technological efficiency of the carding machine, so that the drawing quality of the subsequent process is not affected.3 Design points of the pre-carding board-spur roller, dust-knife-prick roller spacing

The pre-separating board can pre-open the fiber bundles, reducing the carding load in the main carding area.22, 0.20mm from top to bottom. The focus is on improving the fiber transfer effect and reducing quality fluctuations. (4) The longitudinal tooth pitch of the needles of the cylinder clothing is large, and the rear end of the fiber is not easy to be controlled and it is easy to rise. When the defect content of the raw material is high, moderately increasing the speed of the cover plate has a significant effect on reducing the content of sliver defects.71-0. See

Megosztás a facebookon

The disc mixing method is used to increase the mixing uniformity between the raw materials according to the raw material ratio and color requirements, and the mixing must ensure the uniformity of the raw material mixing. In multi-component orders, it is recommended that the material can be used twice before being put into production.

3. 1. 6 Temperature and Humidity

When producing chemical fiber blended varieties, the requirements for workshop temperature and humidity control are relatively high, and the relative humidity should be 3 to 5 percentage points higher than that of pure cotton varieties. In the production of high-synthetic fiber or multi-component blending orders, the temperature and humidity requirements of the workshop are higher. For example, the relative humidity of the drawing workshop of nylon blended varieties needs to be controlled at 72% to 75%. 3. 2 Fiber damage and carding degree In the spinning process, fiber damage and carding degree is a contradiction.

Excessive carding will increase fiber damage, and vice versa will cause neps growth due to insufficient carding. Due to the low fiber content and high fiber straightness of the chemical fiber blending order, in order to reduce the neps during spinning, it is important to strengthen fiber blending, improve fiber spinnability, and minimize fiber damage. Take into account the spinning quality and output.

(1) Production process: (raw material pretreatment) → (blending) → FA002A automatic cotton picking machine → ZFA035 mixed cotton opener → ZF1102 cotton opener → A076F roll forming machine → FA201B carding machine → FA306A Draw frame (three) → JWF1435 roving frame → JWF1510A spinning frame → (winding).

(2) The process of opening and cleaning cotton adopts the principle of “gradual opening, less impact, early fall and less fall, and fiber damage reduction”. FA002A cotton gripper beater blade protrudes from the rib 2 mm ~ 3 mm, down stroke 1.0 mm, beater speed 510 r / min; ZF1102 cotton opener adopts needle puncher, beater speed 600 r / min; clean cotton The volume of cotton roll is controlled at 400 g / m.

Megosztás a facebookon