Study of optimum spinning parameters for production of T-400/cotton core spun yarn by ring spinning

This article presents the use of quadratic general rotary unitized design method in optimization of spinning parameters of T-400/cotton core spun yarn on a ring frame. T-400 is a bicomponent filament based on sorona 3GT polymer form DuPont. An experimental design was generated using MINITAB((c)) 15 which included three factors and five levels. Three factors were the twist, filament draw ratio, and the spindle speed with respect to the yarn properties tested by Uster tester. The research draws clear application of quadratic general rotary unitized method on optimization, with step by step analysis of the variable factors in relation to responses. The optimum spinning parameters for hairiness, evenness, and tenacity while holding other yarn qualities as limiting factors were the following: twist value 430 TPM, filament draw ratio of 0.945, and the spindle speed of 7494 rpm.