Cotton spinning system and process

 

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 of separating cotton seed from the lint so that the lint will be baled and goes to textile industries for further processing whereas the cotton seed is milled by oil mills to produce edible oil. It’s the first step of cotton spinning process.

Opening

An opening machine for separating the fibres from intermingled impurities in cotton tufts.
Opening machine comprise a supply cotton plate onto which the cotton tufts to be processed are introduced. At the bottom of the plate there is a licker-in which cooperates with cleaning blades to split up the fluffy masses of cotton at least partially into their individual constituent fibres. Therefrom, eliminating the intermingled vegetable impurities (parts of leaves, of capsules, of seeds, earth, etc.). In the vicinity of the licker-in there are usually suction openings for removing the impurities separated from the fibres and a duct through which the impurity-free fibres are removed.

Carding

In the Carding machine, the fibrous material is worked into a belt of untwisted fibres in the form of a web that will be condensed into carding sliver and passed on to subsequence processing stages.
The purpose of the carding operation is to turn raw material consisting of tufts of fibres, which have already undergone certain initial cleaning and opening processes, into a belt of untwisted fibres in the form of a web that is, as far as possible, free of impurities and non-homogeneities such as residual dirt from the previous process, waste and tangles or “neps”.
This article is reproduced from fyitester.com.

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