Factors influencing compacting effect of compact spinning with perforated rollers

For complete understanding the factors influencing the compacting effect of compact spinning with perforated roller,the effect of negative pressure and surface friction of perforated rollers on the compacting effect was investigated by using CFD and MatLab software.The results indicated that compacting effect becomes better with deceasing of the surface friction coefficient when the negative pressure is fixed,and the critical friction can be obtained.There is a positive correlation between the critical friction and the changing negative pressure.Therefore,it is necessary to choose reasonable negative pressure and surface friction of rollers for low energy consumption,low cost,and high quality of compact yarns.