Influence of yarn kind on the dynamic of the twisting-and-winding system of the ringspinning machine

In the article presented, the influence of yarn material parameters on the dynamic and stability of the working conditions in the twisting-and-winding system of the ringspinning frame during package (cop) formation was analysed. A computer programme simulating the dynamic phenomena during the spinning process formed the basis for this analysis. Changes of tension and balloon shape dependent on the yarn kind, characterised by yarn material density, the modulus of initial yarn rigidity and yarn friction coefficient were tested and analysed.