Optimum Selection of the Opening Roller and Navel for Rotor Spun Silk/Cashmere Blended Yarn

Machine part selection in rotor spinning from possible alternatives with different properties and performance levels in terms of yarn quality is a difficult task. Classical statistical methods have been used to solve the problem, but the priorities and preferences to obtain the end product characteristics desired have not been taken into consideration. The best type of opening roller and navel depends on the type of fibre and yarn. This paper studies rotor spinning blended yarn produced from spun silk and cashmere. Nine samples were spun from three different opening rollers and navels. According to the Uster test results of yarn quality properties, optimum selection was achieved using the multi-objective fuzzy optimal model. A pin type roller and spiral grooved ceramic were the best choice for spinning stability and yarn quality properties.