Effect of some nozzle parameters on the characteristics of jet ring-spun yarns

The effect of single, double and triple air-jet nozzles of different materials, such as brass, aluminium and teflon, on the characteristics of jet ring - spun yarns has been studied. Regular and jet ring-spun yarns of 19.68 tex, 14.76 tex and 11.81 tex have been produced and then tested for hairiness, tensile and evenness properties. Surface features of all these yarns are compared by scanning electron microscopic studies. It is observed that the jet ring-spun yarns display lower hairiness and higher tenacity. The study further suggests that for achieving a reduction in hairiness and good strength with better evenness properties, the use of single brass nozzle will suffice which would lead to considerable reduction in quantity of air used and enable the piecing to be done more easily in ring frame.