Bark in Cotton Lint; Effects of Processing Costs
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Textile processing results using cotton with different levels of bark from four different textile processing performance studies were analyzed individually to determine the effects of bark in cotton on textile processing. The results indicate that cotton reduced one grade due to bark content added little to processing costs with rotor spinning. However, cotton reduced two grades, because of bark added somewhat more to processing cost with rotor spinning, but had a substantial effect on processing cost with ring spinning. Aggressive cleaning of cotton can reduce processing efficiency losses (costs), but it adds to waste losses. Results suggest that the one or two grade reduction for bark often results in cotton receiving discounts under the CCC loan schedule greater than justified by processing losses.