Effect of yarn trajectory cross-sectional shape of cyclone on yarn properties

In order to further optimize the inside structure of cyclone setting and improve the quality of yarn,two cyclones with different yarn trajectory cross-sectional shape were designed to reduce hairiness of ring spun yarns.The performance indexes of the sample yarns such as hairiness,breaking strength,and unevenness were tested and compared with those of traditional ring spun yarns.The effects of yarn trajectory cross-sectional shape on yarn properties were analyzed.The results showed that both of the two cyclones with different yarn trajectory cross-sectional shape had great effects on the ring spun yarn qualities.Due to the difference of the state of air flow in the two yarn trajectories,their effects on the yarn properties were different.Under the same spinning parameters,the properties including hairiness(3 mm),breaking strength and unevenness of the yarn by cyclone with circular yarn trajectory were better than those by oval one.Therefore,it is more proper to design the yarn trajectory cross-sectional shape of cyclone into circular.