Influence of winding parameters on yarn content and package geometry of wound packages

492-496This study is aimed at evaluating the step-precision assembly winding in terms of its potential to accommodate maximum yarn content on a given size of tube. The influence of various parameters related to step-precision winding on yarn content and package geometry of a close step-precision wound package has been studied. The outcome of this study is presumed to be very useful to manufacturers of winding as well as buyers of assembly winding systems. Step-precision winding parameters, like coil angle at start, angle up to which it is allowed to change and the number of diamonds along the circumference (Y value), influence yarn content on package; lower values of start angle and Y but higher value of change angle give increased yarn content. At the same time, it is also observed that the package with lower start angle and higher change angle give greater projection of package side flanks

Influence of winding parameters on yarn content and package geometry of wound packages

This study is aimed at evaluating the step-precision assemblywinding in terms of its potential to accommodate maximum yarncontent on a given size of tube. The influence of various parametersrelated to step-precision winding on yarn content and packagegeometry of a close step-precision wound package has been studied.The outcome of this study is presumed to be very useful tomanufacturers of winding as well as buyers of assembly windingsystems. Step-precision winding parameters, like coil angle at start,angle up to which it is allowed to change and the number ofdiamonds along the circumference (Y value), influence yarn contenton package; lower values of start angle and Y but higher value ofchange angle give increased yarn content. At the same time, it isalso observed that the package with lower start angle and higherchange angle give greater projection of package side flanks

Analysis of wound filter performance from DREF yarn spun at different suction pressure

Wound filters are quite popular in the domestic water purification systems. The performance of these filters is based on the distinctive yarn and winding variables. Yarn used for filtration application is normally produced on DREF spinning system. Several researchers have reported the influence of DREF spinning variables on yarn properties. However none of them are in context of filtration application. Since elucidation of influence of winding parameters on the filter performance has already been reported; it thus becomes intriguing to explore the influence of spinning suction pressure on filtration behavior. Yarn spun at different suction pressures was used to produce wound filter cartridges, keeping winding variables unchanged. Filters wound using yarn spun at higher spinning suction pressure resulted in greater pressure drop but showed better micron rating. However the pressure drop encountered also affects the retention capacity of the wound filter. The outcome of this study helps in establishing the relation between spinning suction pressure and performance parameters of wound filters. Design expert® software was used to develop regression equations to predict performance of wound filter for the given spinning suction pressure which is of practical significance for yarn and filter manufacturers, without performing filter test