Contribution of draw-off nozzle profile to certain characteristics of acrylic-cotton rotor-spun yarns

261-264<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:calibri;mso-bidi-theme-font:minor-latin;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">In comparision with cotton-majority yarns, acrylic-cotton (70:30) yarns have higher strength, breaking extension, flexural rigidity and abrasion resistance. More than 50% acrylic is required for improvement in tenacity. The use of spiral nozzle has little effect on flexural rigidity but considerably lowers the tenacity, breaking extension and abrasion resistance.