Examination of the Influence of Selected Fibre Properties on Yarn Neppiness
Makaleler > Tam Makale · 2006
Yazarlar: Gonca Özçelik, Erhan Kirtay
Fibres and Textiles in Eastern Europe, Uluslararası, Wos, 2006
Özet
ameter”. The number of neps in cotton yarn depends on two main factors: the characteristics of the raw material used for the yarn production, and the conditions of the technological process in the spinning mill [2]. The opening and cleaning processes in the blow room line are the operations in which the formation of mechanical neps takes place, as well as fibre damage. In today’s spinning market, together with the increment in demand for cleaner cotton and the increased prices paid for the cleaner cotton, cotton fibres are exposed to two or more stages of lint cleaning in the ginning process, which improves the cotton grade and removes foreign materials from cotton. However, the lint cleaners tend to break seed-coat fragments into very small fragments to reduce fibre length, and it becomes very difficult to remove them in opening and cleaning lines. Therefore in order to clean the fibres from these fragments sufficiently, mechanical treatments in the blow room line become more exhaustive. During the opening and cleaning processes, for removing trash and dust particles from cotton, beating, drawing and rolling motions take place, and these actions cause neps formation. Furthermore, the pneumatic transport of fibres between particular machines in the technological line cause an increment in the number of neps, as the more open fibre stream means in creased tendencies of fibres to form neps. Therefore it can be stated that regular air stream and clean air circulation are significant in these preliminary processes.