转杯纱临界捻系数与强力的相关性分析

o investigate the relationship between the critical twist factor and strength of rotor-spun yarn, yarn made of cotton, polyester and newdal were tensile- tested, curve of twist factor coefficient and strength, regression equation and critical of different yarns. The results show that the max strength and critical factor varies in the yarn made of different fibers; Cotton yarn critical twist factor is larger than man-made fibers when the linear densities are the same.