A Method for Estimating the Spinning-potential Yarn Number for Cotton Spun on the Rotor-spinning System

A test for determining the spinning potential of cotton fibers on the rotor-spinning system is proposed. It is based on the minimum twist required to rotor-spin a fixed yarn size. By using known mathematical relationships inherent in the physics of yarn formation, the minimum twist results are transformed into the theoretically finest yarn count that may be spun commercially. Implications of the effects of some key fiber properties un rotor-spinning performance are clarified.