Fading of cotton yarn colored with C. I. vat blue I (Indigo Dye) via ozone application
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In this experimental study, the possibility of obtaining of fading effect to indigo dyed denim yarns via ozonation process was searched. Therefore, a novel approach was attempted for fading the denim materials in the form of yarn before weaving or garment processes. The effect of the ozone gas on the CIELab values of indigo dyed yarn specimens was statistically investigated depending on some physical properties of the yarns and application parameters of ozone gas. In addition, the effect of ozone gas on the strength performance of the yarns was investigated. The results showed that different yarn and ozone application parameters affected the fading results. Besides, the ozonation process did not have a crucial negative effect on yarn strength.