Effect of Wet Processing on the Tearing Strength of Polyester/Viscose Rayon Blended Fabrics

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:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The effect of different wet-processing stages, viz. grey polyester stage, tint washing, scouring, heat-setting, polyester dyeing, viscose dyeing, singeing and finishing, on the tearing strength of plain woven polyester/viscose(65:35) blended fabrics has been studied. The effect of change in single-thread strength, yarn pull-out force, yarn crimp and extension at break due to wet-processing on tearing strength has also been studied. The causes for change in tearing strength after different processing stages are discussed. The relationship between the ratio of single-thread strength to the yarn pull-out force of opposite set of threads and tearing strength has been examined. When the fabric was finished with a softening agent there was a considerable increase in tearing strength.</span>