Effect of air pressure on polyester/nylon air-intermingled yarn and melange fabric properties

Abstract

The objectives of this research work were to investigate the effect of air pressure on properties of polyester/nylon intermingled yarn and melange fabric with special reference to melange fabric appearance. Air pressure has significant negative correlation with all the intermingled yarn properties except mingle stability. Air pressure has positive correlations with melange fabric appearance in terms of black pixels and negative correlation with fabric weight. Regression analysis show that the effects with intermingled yarn properties and melange fabric properties are statistically significant except the number of mingle points. Melange appearance varies from stripe to homogeneous distribution when the air pressure is increased. Air pressure does not have significant influence on the number of mingle points. Mingle stability results indicate that 2 bar air pressure is not adequate for intermingling and the pressure between 3 bar and 4 bar seems more economical to operate that gives higher mingle stability. Higher yarn linear density at 3 bar and 4 bar air pressures indicate higher level of entanglements. Melange fabric weight decreases when air pressure is increased, but the weight difference between 3 bar 4 bar is not significant. Therefore, it can be concluded that air pressure is a critical parameter in developing melange fabrics from polyester/nylon intermingled yarns and the air pressure from 3 bar to 4 bar seems more economical and gives better intermingled yarn and fabric permeance.