Determining fibre properties and linear density effect on cotton yarn hairiness in ring spinning

The hairiness of a yarn can be defined as the total number or total length of the fibres which leave from the unit yarn's surface. Yarn hairiness is formed by surface fibre edges which leave the yarn center and spoil its appearance. Except for a few special cases, yarn hairiness is an undesirable property in a yarn; an excessive degree of hairiness can cause serious problems in both yarn production and in subsequent textile processes. The aim of this study is to examine the effect of cotton fibre properties and linear density on yarn hairiness. For this purpose, two different yarn counts were produced from 15 different characterised cottons with the same process and machine parameters. Yarn hairiness was tested with a Zweigle yarn hairiness meter The fibre parameters were tested with HVI test equipment. The fibre parameters and yarn hairiness results were analysed with the help of the SPSS and MINITAB statistical pocket programs. We basically used multiple regression analysis method for our test results. Among all the parameters examined in this study, yarn linear density is the most important parameter affecting yarn hairiness. An increase in yarn linear density increases the hairiness. Secondly, fibre length is also another important parameter which influences hairiness. The increase in fibre length decreases hairiness.