Statistical Analyses and Predicting the Properties of Cotton/Waste Blended Open-End Rotor Yarn Using Taguchi OA Design

Quality and cost of production are two important considering parts during production of cotton/waste blended open-end rotor spun yarn. Nowadays, blending of spinning waste with virgin cotton is a common phenomenon in rotor spinning intended to lower the production cost. As a result, understanding the relationships between properties of cotton/waste blended rotor yarn and different spinning conditions are important for spinner to maintain acceptable quality. However, this paper focuses on predicting the properties of cotton/waste blended rotor yarn, using taguchi OA experimental design. In this study, the experimental quality characteristics of 16 Ne rotor yarn focused on are the, unevenness, imperfections, strength and elongation wherein before blend ratios, blending technique, two process parameters namely cylinder speed and rotor speed were used as predictors. Using ANOVA, the significant factors influencing the quality characteristics of rotor spun yarn are obtained and analyzed by interaction matrix of dependent variables. Result shows that the most influential parameter in our investigation was waste proportion as expected. Though inferior in strength, the benefits of draw frame blending in OE spinning may be more than blow room blending in terms of reducing the imperfection, irregularity and yarn elongation during processing of higher waste mixing. With increasing rotor speed, yarn evenness, imperfection and strength show a significant deterioration, in case of elongation, no consistent trend was observed.