Optimization of process parameters of cotton/mercerized wool compact spinning blended yarn
In order to further improve the spinnability of cotton/mercerized wool blended yarn and develop high-end fabrics next to the skin,22 tex cotton/mercerized wool(80/20)blended yarn was spun by compact spun,and the spinning process configuration of the blended yarn spinning process was discussed.Through the orthogonal experimental design,three key technological factors of spinning process,draft ratio of the rear zone,spacer block specification and ingot speed,which affect yarn properties were combined.The main indexes of yarn strength,hairiness and evenness of different combinations were tested.The influence degree of each factor on yarn quality was analyzed by range method,and the optimal process combination was selected.The results suggest that when the back draft multiple is 1.16 times,the spacing block specification is 3.0 mm,and the spindle speed is 11 000 r/min,the comprehensive performance index of the yarn is better.The research on the key process of cotton/mercerized wool condensed spinning blended yarn provides a reference for the spinning of cotton/wool blended yarn.