THE INFLUENCE OF COTTON NONCELLULOSIC NATURALLY OCCURRING MATERIALS ON YARN PROCESSING PROPERTIES

摘要

Cotton fibers contain naturally occurring noncellulosic materials such as sugars, wax, metals, and other organic species that may significantly affect textile yarn manufacturing efficiency, processing performance, and quality. Chemical and physical tests were conducted on raw cottons from different U.S. growing areas to determine the effect of different concentrations of these materials and fiber frictional properties on rotor and ring spinning performance and yarn, properties. Yarn break factors and single yarn strengths were found to increase, and evenness thick and thin places were found to decrease, as levels of ethyl alcohol extractions, the metals potassium and magnesium, and RotorRing friction increased. Yam strengths decreased and thick and thin places increased in ring spinning as levels of the metal calcium increased. Ring yarn neps increased and rotor yarn neps decreased as alcohol extractions, wax levels, potassium and magnesium content, and fiber to metal friction increased.