The conversion of lint and seed cotton is directly planted by the farmers from the cotton plant, which is seed cotton. The seed cotton cannot be directly processed by textile. Because the cotton fiber has not been separated from the cottonseed, the seed cotton is not processed. The cotton wool is ginned, and the cotton fiber that is detached from the cottonseed is called "leather". In general, cotton refers to lint. The so-called cotton production is also generally referred to as lint production. The ratio of seed cotton processed into lint is 10:3, that is, every 10 tons of seed cotton can be processed into 3 tons of lint.
It can be seen from the above that the removal of cottonseed from the seed cotton is lint, and the by-product of the seed cotton also has certain uses. The seed cotton is processed by a gin to separate the cotton fibers from the cottonseed. The separated cottonseed is called cottonseed, and there is a small amount of short fiber or short velvet on the woolen seed. The use of the linters is quite high. Generally, the woolen seed is fed into the stripping workshop for stripping (except for cottonseed for seeding, and chemically treated the short pile above it). According to the process requirements, the stripping machine strips the cotton linters into I velvet, II velvet, III velvet, I velvet for papermaking (such as coin paper), etc. II, III velvet is used in chemical industry, Production of film film, military smokeless gunpowder, etc. The cottonseed after peeling off the velvet is called light seed, and can be used as livestock feed and cultured edible fungus base after processing.
According to the length, cotton is divided into long-staple cotton and fine-staple cotton. The length of fine-staple cotton is generally 25-31 mm, and the length of long-staple cotton is 33 mm or more. China's cotton is mainly fine cotton. Normal mature fine cotton, white, white or milky white, soft and silky.
Interpretation of several indicators involved in the calculation of seed cotton into lint:
1. Clothing rate: It is obtained by pick-up or sawtooth test mill when purchasing seed cotton, generally about 38%.
2. Loss rate: The loss (broken) caused by the processing of cotton serifs purchased with cotton is generally less than 1%.
3. Clothing loss rate: refers to the loss of cotton fiber. The ginning loss rate is the percentage of the amount of lint and the amount of lint that should be produced in the ginning factory. The national standard is 3.5%~4% (advanced indicators to general indicators) and in order to minimize the short fibers in the lint. The minimum content requirement shall not be less than 2.5%, and the waste of minimizing lint resources shall not exceed 6%. In fact, the actual loss rate is not more than 3%, and the clothing loss rate in this paper is based on the percentage of the cotton quilt in the ginning factory. The conversion rate here is also different: the clothing loss rate is different due to the different grades. 1% calculation, equivalent to the clothing loss rate of ginning factory 2.6; 3-4 calculated according to 1.5%, equivalent to 3.9% of ginning factory, 5% of 7~7, equivalent to 5.3% of ginning factory.
4, cottonseed unit price: cottonseed that part of the cost of seed cotton purchase, after processing can be slightly higher than the purchase price to compensate for processing losses, generally calculated according to 1.0-1.2 yuan / kg, the specific price with market conditions.
5, processing fee: processing plant personnel wages, equipment depreciation, electricity costs, packaging materials fees, etc., the current general level of 600 yuan / ton, the specific cost is determined according to the actual situation of each processing enterprise.
6, moisture regain and impurity rate: can be converted into a public weight according to national standards, so the relationship with this calculation is not large.
It can be seen from the above that the removal of cottonseed from the seed cotton is lint, and the by-product of the seed cotton also has certain uses. The seed cotton is processed by a gin to separate the cotton fibers from the cottonseed. The separated cottonseed is called cottonseed, and there is a small amount of short fiber or short velvet on the woolen seed. The use of the linters is quite high. Generally, the woolen seed is fed into the stripping workshop for stripping (except for cottonseed for seeding, and chemically treated the short pile above it). According to the process requirements, the stripping machine strips the cotton linters into I velvet, II velvet, III velvet, I velvet for papermaking (such as coin paper), etc. II, III velvet is used in chemical industry, Production of film film, military smokeless gunpowder, etc. The cottonseed after peeling off the velvet is called light seed, and can be used as livestock feed and cultured edible fungus base after processing.
According to the length, cotton is divided into long-staple cotton and fine-staple cotton. The length of fine-staple cotton is generally 25-31 mm, and the length of long-staple cotton is 33 mm or more. China's cotton is mainly fine cotton. Normal mature fine cotton, white, white or milky white, soft and silky.
Interpretation of several indicators involved in the calculation of seed cotton into lint:
1. Clothing rate: It is obtained by pick-up or sawtooth test mill when purchasing seed cotton, generally about 38%.
2. Loss rate: The loss (broken) caused by the processing of cotton serifs purchased with cotton is generally less than 1%.
3. Clothing loss rate: refers to the loss of cotton fiber. The ginning loss rate is the percentage of the amount of lint and the amount of lint that should be produced in the ginning factory. The national standard is 3.5%~4% (advanced indicators to general indicators) and in order to minimize the short fibers in the lint. The minimum content requirement shall not be less than 2.5%, and the waste of minimizing lint resources shall not exceed 6%. In fact, the actual loss rate is not more than 3%, and the clothing loss rate in this paper is based on the percentage of the cotton quilt in the ginning factory. The conversion rate here is also different: the clothing loss rate is different due to the different grades. 1% calculation, equivalent to the clothing loss rate of ginning factory 2.6; 3-4 calculated according to 1.5%, equivalent to 3.9% of ginning factory, 5% of 7~7, equivalent to 5.3% of ginning factory.
4, cottonseed unit price: cottonseed that part of the cost of seed cotton purchase, after processing can be slightly higher than the purchase price to compensate for processing losses, generally calculated according to 1.0-1.2 yuan / kg, the specific price with market conditions.
5, processing fee: processing plant personnel wages, equipment depreciation, electricity costs, packaging materials fees, etc., the current general level of 600 yuan / ton, the specific cost is determined according to the actual situation of each processing enterprise.
6, moisture regain and impurity rate: can be converted into a public weight according to national standards, so the relationship with this calculation is not large.
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