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Showing posts from July, 2023

Cotton spinning system and process

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  How to process the disorganized and horizontally closely connected fibers into vertical order and smooth yarn with certain requirements, it is necessary to turn the block fiber into a single fiber state, completely remove the horizontal connection of the fiber raw materials, and establish a strong longitudinal connection between the end and the end. The former is called the loosening of fibers, and the latter is called the collection of fibers. Cotton spinning is the process of using certain systems, processes, equipment and technology to loosen and assemble textile staple fibers into yarns that meet certain requirements. The process of cotton spinning system generally includes raw material preparation, opening, carding, impurity removal, mixing, drawing, merging, twisting and winding. The following is the process description and application. Unprocessed raw cotton——Opening——Carding——Drawing——Roving(flyer)——Ring spinning——Winding——Yarn steaming Ginning Cotton ginning  is the process

Introduction of Jigger Dyeing

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Jigger dyeing, a method of fabric dyeing performed on a jigger. The fabric is wound up on one roll of the jigger and passed through the dye bath to the other roll. After rolling, repeat in reverse until the fabric is evenly dyed in the desired color. It is an intermittent production method, suitable for small batch production of many varieties. The basic working process is to repeatedly pass the fabric of a certain length and width through the dye solution of a certain concentration and temperature, and complete a certain number of reciprocations according to the process requirements, so that the dye can be colored on the fabric. Therefore, the process of jigger dyed products is simple. ​Structure and working principle The working principle of the jigger is that two rollers with the same geometric size, including a fabric take-up roller and a cloth release roller, drive the fabric to reciprocate dyeing in the dye liquor tank until the process requirements are met. As the jigger progres

Combing Process in Spinning

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Before processing cotton, wool, and silk fibers into fabrics, the process of removing impurities and short fibers in the fibers with a combing machine is called combing. The texture, washability and durability of the fabric produced through this process are greatly improved compared with carded fabrics. The following introduces the composition of the combing machine and the combing process. The kinematic coordination relationship of the main parts on the combing machine is indicated by a dial. The disc is mounted on the combing machine and rotates synchronously with the cylinder, which is generally called the indexing disc. The index plate is divided into 40 equal parts along the circumference, and each equal part is 9°, which becomes one index. The working cycle refers to the time interval between the combing cylinder of the intermittent combing machine corresponding to the two actions of combing the whiskers. That is: the first row of needles in the combing cylinder goes to the botto

Carding in Textile and Its Influencing Factors

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The essence of spinning is to ensure that the fibers are arranged in an orderly manner along the axial direction. To accomplish this task, carding in textile is the foundation and key. The main task of carding is to decompose the cotton bundle into single fibers and preliminarily complete the work of fiber orientation, while removing nep impurities and some short fibers. Below we will summarize the factors that affect the quality of carding, and conduct a simple analysis. Chemical fiber Among all chemical fibers, the friction coefficient and specific resistance of the fiber have the greatest impact on spinning performance and carding quality. In the process of carding and drafting, the static friction coefficient (Us ) and dynamic friction coefficient (Ud ) of fiber and fiber, fiber and carding element, fiber and drafting element have a great relationship with the effect of carding and drafting. ​Chemical fibers have high specific resistance, and the static electricity generated cannot