A general term for seed cotton, lint cotton (raw cotton) or cotton fiber.
Peeled cotton: cotton stripped from cotton bolls that have not naturally cracked
Seed cotton: Cotton petals with seeds picked from cotton bolls.
Stiff petals: Cotton petals that are abnormally opened due to poor development during the growth of cotton bolls.
Full stiffness: Complete stiffness, tight fibers, dull white or dark brown color, no loose cotton petals.
Half stiffness: Partially stiff cotton petals.
Active stiffness: Cotton petals whose fibers are easy to loosen during processing.
Dead stiffness: Cotton petals whose fibers are not easy to loosen during processing.
Lint content: The ratio of the fiber weight stripped from the seed cotton after the trial rolling to the weight of the seed cotton, expressed as a percentage.
Wool lint content: The lint content rate without calculating the effect of impurities and moisture content on the weight of lint cotton in seed cotton.
Lint loss: The difference between the lint content of seed cotton measured by the lint test rolling machine and the lint content calculated by the actual ginning machine, referred to as lint loss.
Lint loss rate: The percentage of lint loss to the lint content of seed cotton measured by the trial rolling machine.
Lint index: The fiber weight on 100 seed cotton.
Standard lint content of seed cotton: the standard weight of lint cotton pressed out from seed cotton as a percentage of the corresponding seed cotton weight.
Cotton mold: a seed cotton module compressed into a fixed shape by mechanical or hydraulic methods.
Seed cotton pile: a seed cotton pile with a fixed shape stacked according to specific requirements.
Ready-rolled seed cotton: seed cotton is ready to be delivered to the workshop for processing.
Lint cotton: the aggregate of cotton fibers after the seeds are removed from seed cotton by mechanical processing.
Raw cotton: lint cotton used as textile raw materials for textile factories.
Cotton wool: a general term for cotton used as filling. Note: generally refers to cotton used to make quilts, cotton clothes, etc.
Sawtooth cotton: lint cotton processed by sawtooth ginning machine.
Roller cotton: lint cotton processed by roller ginning machine.
Infertile seed recovery cotton: longer cotton fibers recovered from infertile seeds.
Cotton grade: a comprehensive indicator of the quality of lint cotton. Note: comprehensive evaluation based on maturity, color characteristics and ginning quality.
Main grade: when inspected by batch, the grade that accounts for 80% or more, and the remaining grades are only adjacent to it.
Grinding quality: the roughness of the appearance of lint cotton and the number of types of defects contained after the seed cotton is processed.
Cotton grade conditions: the basis for evaluating cotton grade, including three conditions: maturity, color characteristics and ginning quality.
Physical standard of cotton grade: based on seed cotton of each grade, it is used to correspond to the physical standard of roller cotton and sawtooth cotton of each grade for evaluating cotton grade.
Degradation: the process that cotton cannot maintain its original grade and is downgraded to the next grade or lower grade due to some reasons.
Cotton grade: the general term for the length of cotton grade.
Color grade: the type and grade of cotton color. The type is determined by the depth of yellow, and the grade is determined by the degree of lightness and darkness.
White cotton: cotton with color characteristics of pure white, milky white, and grayish white.
Lightly stained cotton: cotton with color characteristics of slightly yin yellow or light yellow spots in white.
Light yellow dyed cotton: cotton with color characteristics of overall yin yellow or yin yellow in gray.
Yellow dyed cotton: cotton with color characteristics of overall yellowish color.
Main color grade: when inspected by batch, it occupies 80% or more of the color grade, and the remaining color grades are only adjacent to it, and the type does not exceed 2 and the grade does not exceed 3.
Gross weight: the sum of the weight of cotton and its packaging.
Net weight: the weight after deducting the weight of the packaging from the gross weight.
Standard weight: the net weight is the weight converted into the standard impurity content and standard moisture regain according to the actual impurity content and actual moisture regain of cotton.
The foreign fiber content of bale cotton: the ratio of the weight of foreign fibers picked out from the sample to the weight of the picked sample, expressed in grams per ton (g/t).
Hand-pulled length: the length of cotton fiber measured by hand-pulling and measuring.
Maturity: the degree of thickening of the cell wall of cotton fiber, that is, the degree of accumulation of cellulose in the secondary cell wall during the growth and development of cotton fiber.
Micronaire value: a measure of the air permeability of cotton fiber under specific conditions.
Fineness: the thickness of cotton fiber.
Moisture regain: the percentage of the weight of water contained in wet fiber to the weight of dry fiber.
Lint impurities: non-cotton fiber substances contained in lint cotton and fibers attached to these substances. Note: Such as sand, branches and leaves, boll shells, insect feces, insect corpses, cotton seeds, broken seeds, seed cotton, sterile seeds, seed crumbs with fibers, soft seed skin, etc.
Lint defects: Fibrous substances that are harmful to spinning due to poor cotton growth or poor rolling. Note: Sawtooth cotton defects include: broken seeds, sterile seeds, ropes, soft seed skin, stiff pieces, seed crumbs with fibers and cotton knots;
Roller cotton defects include: broken seeds, sterile seeds, seed crumbs with fibers, soft seed skin, stiff pieces and yellow roots.
Ropes: Multiple cotton fibers are entangled with each other, and it is difficult to tear them apart from the longitudinal direction. Cotton knots: Nodes formed by the entanglement of cotton fibers.
Fiber crumbs: Small broken seed crumbs with fibers with an area of less than 2mm2.
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