Generating reasons of slub in spinning were analyzed and tested to reduce slub and defect in spinning with F1603 rotor spinning frame.

• 为了减少F1603型转杯纺纱机纺纱时产生的粗节纱疵,提高成纱质量。对纺纱过程中粗节产生的原因进行分析,并进行了纺纱试验。