BARK EFFECT ON SPINNING EFFICIENCY OF COTTON

Cotton mixes with various combinations of low and high bark content we re processed on standard, tandem, and modern (two different manufactur ers) textile cleaning equipment, and then spun on a modern rotor spinn ing frame to determine the effect of bark concentrations on processing efficiency and yarn quality. Increased bark concentrations did not si gnificantly reduce yam quality for any of the four processing sequence s. The number of yarn breaks in spinning increased (efficiency loss) a pproximately 66% for each one percent increase in bark content for the cottons processed on standard textile equipment. Yam breaks were not significantly affected by increased bark concentrations when tandem ca rding or modern cleaning and carding equipment were used.