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[Chemical Knowledge]：Production and manufacturing method and process of pure cotton yarn

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The manufacturing method
of pure cotton yarn is
in the field of chemical production raw materials. Pure cotton yarn is a common textile raw material, which is widely used in clothing, home textiles, industrial textiles and other fields. This article will introduce the manufacturing method of pure cotton yarn, including raw material preparation, cotton cleaning, carding, combing, drawing, roving and spinning.

1. Raw Material Preparation
The manufacture of
cotton yarn begins with raw material preparation. Usually use high-quality cotton as raw materials, cotton needs to go through picking, drying, cleaning and other processes to ensure that the raw materials are free of impurities and pollution.

2. cotton

The purpose of the cotton cleaning process is to remove impurities and defects in cotton to ensure the purity of cotton. The cotton clearing machine loosened the cotton into smaller cotton blocks through mechanical action, and at the same time, the impurities and defects in the cotton blocks were removed through air flow and mechanical vibration.

3. carding

carding process is to further treat the cotton block after cleaning, loosen the cotton block into a single fiber state through the action of the comb teeth, and further remove impurities and defects. The action between the cylinder and the cover plate on the carding machine allows the cotton fibers to be fully loosened and mixed.

4. combing

combing process is based on the carding process, the cotton fiber for more detailed processing. The role of the cylinder and top comb on the comber makes the cotton fibers loosen further, remove short fibers and impurities, and improve the quality of cotton yarn.

5. drawing

drawing process is to combine and draw the combed cotton fibers to form a certain thickness of cotton sliver. The role of the drawing machine is to combine multiple cotton fibers together, and at the same time, through the drafting effect, the sliver has a certain thickness and uniformity.

6. roving

roving process is based on the drawing process, the sliver is further drawn and twisted to form a certain thickness roving. The function of the roving machine is to make the roving have a certain strength and elasticity through the role of drafting and twisting, so as to prepare for the subsequent spinning process.

7. spun yarn

spun yarn process is the last process of pure cotton yarn manufacturing, the roving is further drafted and twisted to form a certain thickness of pure cotton yarn. The function of the spinning frame is to make the pure cotton yarn have a certain strength and elasticity, and at the same time have a certain luster and feel through the role of drafting and twisting. After the spinning process is completed, the

needs to carry out the quality inspection of pure cotton yarn, including the detection of linear density, strength, elasticity and other indicators. Pure cotton yarn that meets the quality requirements can be packaged and transported for textile manufacturers.

In short, the manufacture of pure cotton yarn needs to go through multiple processes, and each link needs to strictly control the quality and technical parameters to ensure that the quality and performance of the final product meet the requirements. At the same time, with the continuous progress and development of technology, the manufacturing method of pure cotton yarn is also constantly improving and optimizing, improving production efficiency and quality level, and providing strong support for the development of the textile industry.

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