Fibre properties by HVI and conventional testing at different stages of spinning

摘要

50% Span length, uniformity ratio and bundle tenacity show a significant and consistent improvement from card to drawing sliver in carded mixing in HVI while no such trend is found in Baer sorter and Stelometer results. In combed mixing also, bundle tenacity by HVI increases from card to comber and from comber to drawing, while no such increase is found in Stelometer results. The crimp removal in drawing and the reduced short fibre content in the clamped beard contribute to the increase in tenacity from card to drawing sliver in HVI. HVI results do not agree well with that of Baer sorter in regard to incidence of fibre breakages in blowroom.