By N. S. Kaplan
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Extra info for A Practical Guide to Fibre Science
Consequently, it is yet to establish any significant name in the industry. Raw Material as a factor affecting spinning Fineness determines how many fibres are present in the cross-section of a yam of particular linear density. 30 to 50 fibres are needed minimum to produce a yam fibre fineness influences: 1. spinning limit 2. yam strength 3. yarn evenness 4. yam fullness 48 Textile Technology 5. drape of the fabric 6. lustre 7. handle 8. productivity Productivity is influenced by the end breakage rate and twist per inch required in the yarn.
Processing of Textile Fibres 49 The proportion of short fibres has extremely great influence on the following parameters: 1. spinning limit 2. yam strength 3. handle of the product 4. lustre of the product 5. productivity A large proportion of short fibre leads to strong fly contamination, strain on personnel, on the machines, on the work room and on the air-conditioning, and also to extreme drafting difficul ties. A uniform yam would have the same no of fibres in the cross-section, at all points along it.
Further,the correlation between spinning performance and bundle strength is atleast as high as that between spinning performance and intrinsic strength determined by testing individual fibres. The testing of bundles of fibres takes less time and involves less strain than testing individual fibres. In view of these considerations, determination of breaking strength of fibre bundles has assumed greater importance than single fibre strength tests. permanent and elastic elongation together Elongation is specified as a percentage of the starting length.
A Practical Guide to Fibre Science by N. S. Kaplan