Discrimination of ring spinning and open-end spinning

Ring spinning is obtained by spinning on a spinning frame, and the spinning direction is z-twist, so S-twist is used for untwisting, and the fibers can be separated. Air spinning is to form a vortex through air swirling, so the fibers on the surface of the yarn are entangled with each other, and the inner fibers have a certain degree of twist, but because the surface fibers are entangled with each other, no matter whether z twist or s twist is used for untwisting, the fibers cannot be separated. . Therefore, the two can be distinguished by the above method, and for the same yarn count, the strength of ring spinning is better than that of air spinning, and the hairiness and evenness of air spinning are better than ring spinning.