Performance of dyed warp yarns

Abstract

<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"="">The performance of the grey and dyed sized cotton yarns was studied on the air-jet loom in the industry. To understand the difference in the behaviour of the yarn due to dyeing, the grey, dyed unsized and the corresponding sized yarns were studied in the laboratory on the Reutlingen web tester for their weavability and nature of breakage. Analysis of the result helped in understanding the effect of dyeing on fibre damage, fibre cohesion and size-fibre adhesion. Dyeing causes a change in the yarn cohesion; the dyed yarn requires better sizing material having relatively lower viscosity and higher adhesion compared to that for the corresponding grey sized yarn.</span>