Influence of the combing process on the parameters of cotton yarns

In this article, we concentrate on the tests of combed ring and rotor yarns made from Creek and Egyptian long staple cottons. The rotor spinning machi ne BD 200S was with sliver of non-combed and combed fibres, from which 8 an d 16% of noils were removed during combing For the purpose of comparison, c arded and combed yarns were also made on the ring spinning machine. Removin g of shout fibres in the process of combing lowers the coefficient of varia tion of the linear density of yarns 15, 18 and 20 tex. The advantageous inf luence of the combing process is particularly visible in yarns made on the ring spinning machine. The largest differences in CV appear between non-com bed yarn and the yarn received from a stream of fibres from which 8% of noi ls have been removed. Increasing the percentage of noils removed to 16% doe s not lower the yarn CV in any significant way.