Abstract
Fine dusts in Pneumafil V-filter trash samples were separated into 20-38- μm and < 20- μm fractions. The trash samples were generated from individual bales of cotton carded in the Model Card Room at North Carolina State University. A total of 62 samples has been separated to date, and the results are summarized in this paper. The quantity of fine dust is shown to vary with carding conditions as well as with treatment of the cotton. Addition of oil is shown to decrease the amount of fine dusts separated. The dust yields increased with the increase of the amount of cotton in a cotton/polyester blend study. Washing cotton resulted in no major change in the amount of dust that could be separated. However, the use of an electrostatic eliminator bar near the Pneumafil intake caused a significant increase in the amount of dust trapped on the Pneumafil V-filter trash. The mean amount of dust separated from the 62 Pneumafil samples was 6.53 g/bale for the < 20- μm fraction and 18.81 g/bale for the 20-38- μm fraction.
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