Mohair fibre drafting in ring spinning. Part I: Pinned apron

This paper deals with a novel approach for improved fibre alignment and hoo ks removal during drafting of mohair fibres in ring spinning. The concept o f fibre control with a pinned apron to replace the conventional double apro ns used in ring spinning was examined. The intention was to achieve both fi bre alignment and hooks removal, coupled with fibre control due to fibre/pi n interaction during drafting. This was thought to he particularly importan t for slippery fibres like mohair. The yarn assessment results obtained ind icate that, far the pinned apron arrangement used, there was a significant reduction in the number of neps, but the yarn evenness deteriorated. The pr oblems associated with the pinned apron are discussed in this paper. A diff erent approach, overcoming these problems, will be reported in Part II of t his series.