By N. S. Kaplan
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Extra info for A Practical Guide to Fibre Science
However, they have only a small influence on the cotton's grade index, visible liint foreign-matter content, and fiber length distribution when compared with the lint cleaning Processing of Textile Fibres 57 effects. Also, the number of neps created by the entire seedcotton cleaning process is about the same as the increase caused by one saw-cylinder lint cleaner. Most cotton gins today use one or two stages of sawtype lint cleaners. The use of too many stages of lint cleaning can reduce the market value of the bale, because the weight loss may offset any gain fromgrade improvement.
If, on the other hand, the causes of a processing defect are unknown, neither the producer nor the processor will be able to prevent or avoid that defect in the future.
High proportion of short fibres 4. varying dyeability 5. processing difficulties at the card and blowroom Fibre length is one among the most important characteristics. It influnces: 1. spinning limit 2. yarn strength 3. handle of the product 4. lustre of the product 5. yarn hairiness 6. prod uctivi ty It can be assumed that fibres of under 4 - 5 mm will be lost in processing(as waste and fly). fibres upto about 12 15 mm do not contribute to strength but only to fullness of the yarn. But fibres above these lengths produce the other positive characteristics in the yarn.