Influence of cyclone setting on yarn properties

When cyclone is installed between the front roller and the snail wire on the traditional ring spinning frame,the property of the spun yarn can be greatly improved.The impact of air pressure,spindle speed,twist factor and the distance between the front roller nip and cyclone on the yarn quality was investigated by orthogonal method,and the optimal process parameters were obtained.The experimental results showed that yarns with the best quality can be spun under the following conditions: air pressure,(0.25 MPa);spindle speed,(9 000 r/min);twist factor,330;distance between the front roller nip and cyclone,(6.5 cm).It was found that the yarn spun by this method compared favourably with the traditional ring spun yarn in terms of hairiness(reduced by 97%),breaking strength(increased by 9%),and unevenness(reduced by 6%).This research provides a reference for developing new spinning methods for enhancing the quality of yarns.