锭帽式假捻装置在环锭纺上的应用效果研究OACSTPCD

In order to reduce the break ends rate of undertwisted yarn and improve yarn quality of undertwisted yarn,a spindle cap false twist device that can be installed directly on the spinning tube was developed.The spindle cap false twist device with different diameters and surface structures was used to spin 24.4 tex undertwisted wool single yarns.The breaking tenacity,breaking elongation rate and hairiness index were tested and compared with common ring-spun undertwisted yarns.The results showed that,comparing to common ring-spun yarn with the same twist,the yarn breaking tenacity spun with spindle cap false twist device was improved with 10%around,breaking elongation rate was improved with 30%around,breaking work was increased by 30%around and long hairiness index(4 mm～9 mm)was decreased by 8%around.In general,the smooth spindle cap showed better improving effect in yarn quality compared with the cambered spindle cap.The diameter of the spindle cap false twist device had an influence on the above indexes.When the cambered spindle cap with the diameter of 48 mm,52 mm and 54 mm respectively,the false twist effect was the best.When the diameter of the smooth spindle cap was 44 mm,56 mm and 58 mm respectively,the false twist effect was the best.It is considered that the spindle cap false twist device developed is simple in structure,easier to install,without energy consumption,and can effectively improve the yarn quality of ring-spun wool low twist yarns,which has better application value.