Combination effects of open-end rotor spun hybrid yarns

We have developed a mechanical hybrid yarn spinning system that produces different yam types on a modified open-end rotor spinning frame. In order to improve yam properties and produce novel yams, we investigate the effects of combinations with typical hybrid yarns by inserting two filament yarns with varying filament over-feeds. The results are a new rotor spun loop (RSL) yarn made by combining two aspects of typical hybrid yam production into one process, and an RSL yarn where a filament yam, fed with a core filament over-feed (CFOF), is located in the center of one yarn and the other filament yam, fed with the effect filament over-feed (EFOF), makes a loop on the yam surface. The stable conditions of RSL yarn production are within a range of EFOF greater than or equal to 4 (m/min) and -6.0 less than or equal to CFOF less than or equal to -4.0 (m/min).