Investigating the RoCos Core Spun Compact Yarn Properties

in this research, the core-spun compact yarns using RoCos roller have been produced and the effects of some factors including filament yarn pre-tension, yarn count and type of sheath fibers were investigated. 56 core-spun compact yarns were produced based on the different combination of controllable factors. The core yarn for all samples was nylon filament. In the next step, physical and mechanical properties of samples including tensile properties, hairiness, unevenness and abrasion resistance were investigated and the best core-compact yarn was determined. The statistically analyses have been applied on the obtained data and also the yarn properties were modeled by multiple linear regression analysis. The results showed that all controllable factors had a significant effect on measured yarn properties, except for pre-tension which had no significant effect in the case of yarn evenness. The yarn samples with polyester/viscose sheath fiber exhibited superior physical and mechanical properties compared with samples with cotton sheath fibres. Additionally for the case of comparison, a sirocore yarn was produced according to the controllable parameters of best core-spun compact yarn and it was observed that the properties of core-spun compact yarn is better than those of siro-core spun yarn.