Guidelines for the configuration of the number of process lanes in the parallel, roving and spinning processes.
category： Industry Information
Release time：2024-08-27
In the general combing system, the number of process lanes for merging and roving shall follow the "odd number criterion", I .e. the number of equipment lanes between carding and roving processes shall be configured according to odd numbers, such as "two parallel lanes and one roving". Since the back hook fibers are mostly in the carding sliver (about 50%), many back hook fibers can be straightened during drafting on the spinning frame after adopting the "odd number criterion. Rotor spinning generally uses two parallel process. In order to improve the quality of polyester-cotton blended yarn, a polyester pre-drawing is often used to reduce the unevenness of the weight of the polyester strip, improve the accuracy of the blending ratio, and improve the straightening parallelism of the fibers in the polyester strip. After combing, the cotton sliver can remove lint and knots, straighten the fibers, and make the yarn smooth and clean. Then mix the polyester sliver and the cotton sliver three times to ensure sufficient mixing. Sometimes, in order to mix well, the process of "three parallel strips and one roving" is also used.
Advertising spun yarn is the last process of yarn formation, that is, the spinning machine will feed the roving yarn to a certain degree of drafting, drawing length and thinning to the required linear density, and add appropriate twist to make it a spun yarn with certain physical and mechanical properties such as strength, elasticity and gloss. At the same time, the spun yarn will be wound and formed according to certain requirements to facilitate transportation, storage and processing in the following process.
Through the above processes multiple drafting and turn drawing. The bundle fibers are caused to separate and straighten, and twisted into a yarn. At the same time, after many times of merging, the uniformity of the long segments of the strip is improved. Blended products due to the full mixing of fibers, but also to improve the levelness of the product.
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2024/08/27
2024/08/27
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