Technology parameter optimization of roving spacer of cable type core-spun yarn

To improve the strength and yarn evenness of the cable type core-spun yarn,this study optimized the structure parameters of the roving spacer which is one of the important components to spin the yarn,including material,thickness of edge,and width,depth and diameter of the groove.By comparing the performance of the spun yarns,polyformaldehyde was chosen as the material for making the roving spacer.Structure sizes optimized through orthogonal experiment were as follows: thickness of the edge 0.2 mm,groove diameter 13 mm,shallow groove 0.3 mm,deep groove 0.4 mm,and width of groove 0.5 mm.Under the same spinning conditions,polyester/cotton cable type core-spun yarn and normal core-spun yarn with identical linear density and twist factor were spun.The spun yarn property test indicated that: compared with the normal core-spun yarn,the hairiness of cable type core-spun yarn reduced by 44%,but the breaking strength and the evenness had no obvious difference.The core coverage of the cable type core-spun yarn was better,with the core yarn position relatively stable.