Papers by Keyword: Yarn Properties

Abstract: In this study, the effects of cotton fiber characteristics, tested by Uster High VolumeInstruments (HVI) on the tenacity, elongation, unevenness, imperfection index (IPI) and hairiness values of the combed ring spinning yarns, were investigated in detail. Based on the experiments, it was found that an increase in fiber tensile strength and elongation leads to an increase in the specific tensile strength and elongation of the yarn; an increase in short fiber content and neps fiber materials leads to an increase in the unevenness, IPI of the yarn; an increase in the fiber length leads to a decrease the hairiness values of the yarn, etc. Information concerning the relative contribution of fiber characteristics to yarn properties is one of the important targets for the spinner to choose cottons that are best suited to the manufacture of specific end product.

Abstract: In this article, morphology, IR and single fiber strength of cooling-mica fiber, and single yarn strength, yarn hairiness, twist, yarn evenness, resisting acid and alkali have been studied and tested.

Abstract: The effect of blending ratio and yarn twist multiplier on Polysulfone /Meta-aramid blended yarn properties is studied. Two-factor analysis of variance shows that yarn twist multiplier and blending ration have a significant effect on yarn breaking strength while yarn breaking elongation is affected by yarn twist multiplier considerably. Yarn evenness varies with blending ration delicately. Blending ratio and yarn twist multiplier have little effect on yarn hairiness. Yarn evenness nearly has no change with yarn twist multiplier and yarn breaking elongation remains consistent under different blending ratios. Yarn breaking strength gets higher with Meta-aramid content increasing. When the yarn twist multiplier is small, it’s easy to increase yarn strength by blending high-strength fibers. Yarn breaking elongation gets higher when yarn twist multiplier is larger. Blended yarn evenness gets better with finer Meta-aramid content increasing.