Cotton fabric knowledge

       The long staple cotton of Egypt is the most famous in the world, and its fiber can be as long as 35 mm or more. The cross section of the fiber is nearly round, and the diffuse ability is strong. Its fabric mercerization is good and the dyeing effect is good. The length of his cotton fiber is relatively long and thin, made into yarn, high strength, flexibility, all attributes are much better than ordinary cotton! Egypt is the world's most important exporter of long-staple cotton. Its price is also the most expensive in the world due to its best intrinsic quality.

    American cotton is a upland cotton variety selected and bred from the United States. The original variety was crossbred with Fuzi cotton in 1911 by express and so on. After four backcrosses and continuous selection, daizi 10, 14, 15, 16, 25, 55, 61, 70 and Guangye Daizi cotton have been systematically selected for many years. In the upland

    cotton varieties grown in the United States, Dai Cotton is in the leading position, and dai cotton varieties also occupy an important position in the world's famous cotton producing countries. Xinjiang cotton is famous in the world for its long wool, good quality and high yield.

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    Soil, climate is different, xinjiang can not reach more than 18 hours of light. Xinjiang has unique natural conditions, alkaline soil, large temperature difference in summer, sufficient sunlight, adequate photosynthesis, long growth time, resulting in xinjiang cotton show more outstanding characteristics. Classification of cotton: one, according to the variety of cotton classification: 1, fine cotton: also known as upland cotton. The linear density and length of fiber are medium, with a general length of 25~35mm. Most of the cotton planted in China belong to this category. 2, long staple cotton: also known as island cotton. The fiber is thin and long, with a general length of more than 33mm. It has good quality, less planting in China. In addition to Xinjiang long-staple cotton, the main imports are Egyptian cotton, Sudan cotton and so on.

     In addition, there are short fiber of coarse wool cotton, has been eliminated. Two, according to the classification of cotton primary processing: from cotton is seed cotton, can not be directly textile processing, must be first primary processing, the seed cotton in the removal of cotton, get lint. According to different primary processing methods, cotton can be divided into sawtooth cotton and roller cotton. 1, serrated cotton: the use of serrated cotton gin processing of cotton called serrated cotton. Serrated cotton contains miscellaneous, short fleece, neat fiber length and high yield. But fiber length slant short, rolling defects.

At present, fine cotton mostly used sawtooth ginning. 2, roller ginned cotton: the ginned cotton processed by roller ginned machine is called roller ginned cotton. Roller ginned cotton contains miscellaneous, short pile, poor uniformity of fiber length and low yield. But the fiber length operation is small, rolling defects are few, but there are yellow roots. Leather ginning cotton suitable for long staple cotton, low cotton and so on.