Effects of cyclone on properties of ring spun yarns with different linear densities

For choosing the right size of cyclone to reduce hairiness and improve yarn quality,the cyclone installed on the conventional ring spinning frame was used to process yarns with different linear densities,and the effect of the high speed rotating airflow inside the cyclone jet on the twisting of yarns was investigated.The results indicated that although the use of cyclone can effectively reduce yarn hairiness,the improvement of yarn breaking strength and unevenness is not observable.In addition,the improvement of yarn quality varies with the linear density of yarns.If a cyclone with the yarn trajectory of 2 mm and air trajectory of 1.4 mm is used,the quality of processed yarns shows improved regardless of the linear density.The yarn with linear density of 10 tex and hairiness(3 mm) exhibits better breaking strength and unevenness than the other four kinds of yarns.