The seed cotton extracted from the cotton field is processed through ginning and the cotton fiber after removing the cotton is called "lint". Lint compacted into bags, shipped to the textile mill as a raw material, known as "raw cotton." At present, the raw cotton used in cotton mills is divided into sawtooth cotton and roller cotton because of different ginning methods.
1. Saw-tooth cotton Saw-tooth ginners are used. The lint obtained by processing is called saw-tooth cotton. Sawtooth cotton processing principle is the use of circular sawtooth pieces, seize the fiber on the seed cotton, so that the fiber and cotton detachment. Because the zigzag machine is specifically equipped with a rigid row of sterilizers, it can remove deadly cotton such as diseases and insect pests. Therefore, the sawtooth cotton is miscellaneous and contains less rigidity, and the fiber length, uniformity, and short loops are small, and the quality difference between the bale and the bale is small. The sawtooth machine produces about 500 kilograms per machine. Its mechanical action is relatively strong. Therefore, it is easy to damage long fibers. If the work is poor, more wire ropes and neps will appear.
2. The roller cotton uses the roller gin gin, and the lint obtained by the processing is called the roller cotton. The principle of the roller gin is to use the rough surface of the roller to stick the fiber on the seed cotton and use the dynamic impact to separate the fiber from the cotton. The special platooning and freezing equipment is provided on the gin gin. When the table is produced, it only produces about 50 kilograms. Its ginning effect is relatively moderate. Therefore, the lap cotton contains more impurities, less fiber damage, and the quality difference between the bag and the bag. Larger. The roller is more suitable for processing long-staple cotton; if the cotton is poor, the content of short fiber in the raw cotton will increase.
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