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The manufacturing method of pure cotton yarn 

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

1、 Raw material preparation 

The manufacturing of pure cotton yarn starts with raw material preparation. High quality cotton is usually used as raw material, and cotton needs to go through processes such as picking, drying, and cleaning to ensure that the raw material is free of impurities and pollution

2、 The purpose of the cotton cleaning process is to remove impurities and defects from cotton, ensuring its purity. The cotton cleaning machine uses mechanical action to loosen cotton into smaller cotton chunks, while removing impurities and defects from the cotton chunks through airflow and mechanical vibration

3、 The carding process is to further treat the cleaned cotton blocks, and through the action of the comb teeth, loosen the cotton blocks into a single fiber state, while further removing impurities and defects. The interaction between the cylinder and the cover plate on the carding machine allows for sufficient loosening and mixing of cotton fibers

4、 The combing process is a more detailed treatment of cotton fibers based on the carding process. The action of the cylinder and top comb on the combing machine further loosens the cotton fibers, removes short fibers and impurities, and improves the quality of cotton yarn

5、 The drawing process is to combine and stretch the combed cotton fibers to form a certain thickness of cotton sliver. The function of a drawing machine is to combine multiple cotton fibers together, and at the same time, through stretching, make the cotton sliver have a certain thickness and uniformity

6、 The roving process is based on the drawing process, where the cotton sliver is further stretched and twisted to form a certain thickness of roving. The function of the roving machine is to provide a certain strength and elasticity of the roving through the action of drafting and twisting, preparing for the subsequent fine yarn process

7、 The fine yarn process is the final step in the production of pure cotton yarn, which further drafts and twists the coarse yarn to form a certain thickness of pure cotton yarn. The function of a spinning machine is to provide pure cotton yarn with a certain strength and elasticity, as well as a certain luster and feel, through the action of stretching and twisting

After the fine yarn process is completed, quality inspection of pure cotton yarn is required, including testing of indicators such as linear density, strength, and elasticity. Pure cotton yarn that meets quality requirements can be packaged and transported for use by textile manufacturers

In short, the manufacturing of pure cotton yarn requires multiple processes, each of which requires strict control of quality and technical parameters to ensure that the final product's quality and performance meet the requirements. At the same time, with the continuous progress and development of technology, the manufacturing methods of pure cotton yarn are also constantly improving and optimizing, improving production efficiency and quality level, providing strong support for the development of the textile industry.