Quality Analysis of Cotton/Polyester Yarn Blends Spun with the Use of a Rotor Spinning Frame

An analysis was carried out of parameters characterising fibres, half-finished products, cot ton yarns and cotton/polyester yarn blends spun with the use of a R1 rotor spinning frame from Rieter. The influence of polyester fibres’ share in the blends on their structural yarn parameters was analysed. Cotton yarns combed and carded with linear densities of 20 tex & 30 tex and with a constant twist factor of α = 140 were spun by means of the R1 spinning frame. A two-factor variance analysis was carried out which proved the significant influence of the blends’ content on the basic quality yarn parameters.