Fiber Configuration in Sliver and Roving and its Effect on Yarn Quality

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Abstract
Fiber configuration in sliver and the incidence of hooks in sliver and rovings have been studied, employing two different techniques. It has been established that during the drafting of sliver at draw frames, trailing hooks are removed preferentially as com pared to leading hooks. The direction of presentation of hooks in the ingoing material (sliver or roving) at the ring frame has been shown to have a considerable effect on yarn strength and evenness. For best results with carded yarn, the majority of hooks in the feed to the ring frame should be presented to the drafting system in a trailing direction, i.e., there should be an odd number of processes between carding and spinning.

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