YARN QUALITY INVESTIGATION OF COMPACT COTTON YARNS WITH DIFFERENT COMBING NOIL PERCENTAGE
Abstract
The noil percentage of the combing process can be varied 8-25% depending on the cotton quality and combing machine adjustments to obtain desired cotton yarn quality parameters. In this study, the effect of combing noil percentage on yarn quality for different linear densities (19.7 and 14.8 tex) and twist coefficients (3, 3.5 and 4) in the production of the compact spun yarn was investigated. Comber noil percentage was chosen in accordance with optimum combing machine setting as 14, 16 and 18%. The amount of noil percentage to be extracted at comber was achieved by forward feeding detaching which means the material is fed whilst the nipper is rocking towards the detaching roller to obtain better fiber control. Then, the tenacity, elongation, unevenness, imperfection index (IPI) and hairiness values of the yarn samples were determined. Analysis of variance and multiple regression analysis was carried out to analyze the relationship between a yarn quality variables and linear density, twist coefficient, noil percentage independent variables.
Keywords
comber noil, forward feeding, compact yarn, yarn quality, twist coefficient
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