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Raw Material
author:admin date:2016-03-24 10:07 from:未知
1. What’s the cotton fiber of medical absorbent cotton usually used?
1) Grade cotton (long stapled cotton / ginned cotton): Mainly produced in
Guangdong and Guangxi provinces.
2) Short staple cotton: The fiber on the first time stripped cottonseed and the cotton linters of the second time stripped.
3) Cotton noil: Short and strength is not high. Mainly used in high-end customers, it can be used as cotton pads.
P.S: Natural cotton is degradable, and more environmentally protection.
2. Briefly describes the production process of cotton fiber?
1) Long stapled cotton: Through the cotton gin to make the cotton and
cottonseed separated, the stripped cotton is long stapled cotton.
2) Short stapled cotton: The cotton on the cottonseed hull after long stapled cotton
stripped, through the linter, the first time stripped cotton is short stapled cotton.
 Features: large ash, short length, and hard.
3) Cotton noils: The falling cotton in the process of carding of the long stapled cotton
through the combing machine.
3. What are the fibers of the native cellulose fiber? What is the component content of the
fiber?
1) The fibers of the native cellulose fiber: plant fiber, animal fiber, mineral fiber
2) Main component content of the fiber: cellulose(>60%),pectin(>10%),organic acid(>14%),waxiness, ash(molecule), saccharides(>14%)
4. What’s the main physical (mechanical) performance of the cotton fiber?
1) Flexible and elastic
2) Sufficient strength to endure a certain pressure
3) There is the friction between the fibers
P.S: The chemical properties of the cotton fiber: hygroscopicity.
5. Is interior of the cotton fiber hollow? Is the raw material of cotton fiber straight?
1) Interior (cross profile) of the cotton fiber is hollow.
2) The raw material of cotton fiber is not straight. It is helical.
6. What are the standards of the absorbent cotton?
Whiteness, water absorbing capacity, water absorbing time
7.What are the main elements of cotton fiber quality?
  Maturity, impurity, ash content, fiber length, whiteness, short fiber content,
moisture, foreign fiber.
8. What is the maturity of cotton fiber? How to assess the maturity?
1) The maturity of cotton fiber is the degree of fiber cell wall thickening, the thicker the cell
wall, the higher maturity. High maturity fiber always with more convolutions, high
strength, strong elasticity, good color, and the yarn’s quality is higher.
The economic characters are all poor of the low maturity of the fiber.
But the overripe fiber is also not too good, because fiber is too thick, curved rarely, so the yarn strength is not high.
2) To assess the maturity of the cotton fiber, basically see its smoothness, plumpness, and whether it has elasticity and impurities, etc.
Maturity influences the water absorbing capacity and water absorb
9. What are the new type cotton fibers? What is the classification of the textile fiber? What is the structure of the cotton fiber?
1) New type cotton fibers: Super cotton, bionomic cotton (colored cotton), etc…
2) Textile fiber: natural fiber, chemical fiber.
3) The structure of the cotton fiber: curving, hollow.