Controlling The Quality Of Equipment And Spinning The Lewd Yarn Is No Longer A Problem.

< p > < a > href= > http://sjfzxm.com/news/index_f.asp > > Color > /a > because of the new process of first dyeing and spinning, it shortens the technological process of the rear track processing enterprises, reduces the production cost, and has the advantages of high added value and so on, conforming to the mainstream development trend of the products, but the quality control of the colored yarn is still a difficult problem before people.

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< p > because a href= "http://sjfzxm.com/news/index_f.asp" > colored spun < /a > yarn is strictly required for the quality of raw cotton, the dyeing process must be monitored in the whole process, forming two major difficulties in the production process of colored spun yarn.

First of all, the color spun yarn has strict requirements for the quality of dyed raw cotton, and the maturity and density of raw cotton must be strictly controlled.

Because the maturity of dyeing raw cotton is closely related to the rate of coloring, the degree of fiber maturity determines the color rate directly.

In addition to the relatively high requirement for maturity, colored cotton yarn also requires high density of cotton fiber.

If the cotton fiber line density can not meet the requirements, the fiber rigidity of the finished product will be weak and easy to break, and a large number of neps will be produced during the spinning process.

Secondly, the color spinning cotton has set a high standard for Neps, impurities and three wire content.

Neps show a mess in appearance, often not in the main color of yarn, but determine the main color of the color fiber.

Defects in raw cotton are usually caused by poor growth of raw cotton, or poor seed mills or fiber seeds during processing.

Broken seeds can be removed during spinning, but fiber seed chips are different.

Therefore, we should know the test data of the Worcester tester and the number of blackboard defects through a specific process, such as single mark spinning, check out similar problems, and select the dyed cotton suitable for spinning.

In addition, the three wire problem will seriously affect the fabric appearance or yarn strength, especially in the deep color products.

Therefore, before dyeing the dyed cotton, we need to deal with neps, impurities and three filaments in a timely manner.

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The production of P > colored spun yarn is very difficult, and the trend of color spinning is still developing rapidly in recent years.

In order to obtain high quality and stable products, effective control of various problems in the production process of color spun yarn must be carried out, especially for quality control of key equipment that makes up the color spinning production system.

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< p > as a key link in the production of colored spun yarn, carding equipment is particularly effective.

Carding machine can finish combing the fibers through card clothing. The good quality of the card clothing can not only effectively comb the fibers, but also ensure the minimum fiber damage, and help to achieve the purpose of high yield and high quality.

Xilin card clothing can properly increase pverse and longitudinal tooth density, and the front angle is appropriately increased to achieve the effect of high yield carding.

The flat clothing is arranged in a gradual planting needle or arranged in multiple needles, and alloy steel wires are used.

At the same time, we can increase the density of the needle and reduce the height of the needle so as to achieve better bending resistance.

In addition, in order to improve the evenness and durability of the card clothing, the strength and elasticity of the bottom cloth can also be appropriately raised.

Doffer clothing can appropriately increase the pitch, increase the base thickness and tooth depth.

As for the tooth top form, the original straight tooth surface and back shape can be pformed into complex curves, which can not only produce high yield carding but also improve the pfer efficiency.

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The rubber rollers used in < p > should have high elasticity, ensure instantaneous dynamic roundness, and resist elastic fatigue for a long time, so they can be adapted to the technology of light pressure or heavy pressure.

The cots should be of low hardness.

Compared with the medium high hardness cots, the probability of unevenness of grip strength of the low hardness cots is very small, and the draft is stable and reliable.

At present, the hardness of COTS at home and abroad is 63 degrees to 66 degrees.

The cots should be of high wear resistance and non surface treatment. These two characteristics determine the stability of yarn quality, durability, service life and spinnability.

The structure of the cots should be aluminum lined pipes.

Throughout the development process of the rubber roller structure, from the sleeve glue to the double-layer or even multi-layer, and then to the aluminum lined pipe structure, the aluminum lining structure has remarkable effect in reducing the difference and enhancing the stability.

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< p > colored spun yarn is a new type of yarn. The knitted fabric made of colored spun yarn is more harmonious, and the fabric surface is natural and uniform. These advantages are not common for ordinary dyeing and finishing products.

Therefore, in order to ensure the quality of finished products, quality control of key equipment in production system must be carried out when producing colored spun yarn.

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