How to deal with quality problems in spinning?(3/6)
3 immature fiber
Immature fiber: refers to the cotton fiber with thin cell wall, large lumen, no twist, and partial ribbon fiber.
(1) because the dyeing performance of immature fiber is different from that of mature fiber, the uneven distribution of immature fiber in the spinning process will lead to crosspiece defects in the defective fabric. The lower the content of immature fiber, the same dyeing performance of cotton fiber and less dyeing defects.
(2) the rigidity and strength of immature fiber are poor. Therefore, it will affect the production and quality of spinning production. Under the same conditions, it will increase neps and short fibers, increase yarn breakage and unstable production.
(3) the percentage of immature fiber content has been taken as an important index to control in foreign countries.
(4) using cotton fiber property detector such as Uster AFIS to inspect the distribution of immature fiber in raw cotton one by one, which can accurately and rapidly detect the content of immature fiber.
(5) it is suggested that the percentage of immature fiber between bales of a batch of raw cotton should be less than 2%, and the percentage of immature fiber between bales should not be more than 0.5%.
