ANALYSIS OF QUALITY PARAMETERS OF BLENDED AND “SIRO” YARNS
Abstract
This study evaluates the quality characteristics of yarns made from fiber blends and those spun using the “Siro” ring‑spinning technique. Three yarn types were compared: cotton/polyester (50/50) blend, cotton/viscose (50/50) blend, and a cotton/polyester (50/50) “Siro” yarn. The results show that the linear unevenness (U%) of the “Siro” yarn and the cotton/viscose blend is better than that of the conventional cotton/polyester blend. Thin places (−50%) in the “Siro” yarn were 75% fewer than in the regular blend, whereas thick places (+50%) were 25% more frequent compared to the cotton/polyester blend. Although the specific breaking strength of the “Siro” yarn is up to 50% higher than that of the blended yarns, its coefficient of variation (CV%) does not differ dramatically. However, the “Siro” yarn exhibits significantly lower hairiness and fewer neps. The cotton/polyester “Siro” yarn stands out for its high specific breaking load, low fuzziness, low nep count, and a smooth, strong structure. These findings provide a scientific basis for selecting fiber mixtures and the “Siro” spinning technology in textile manufacturing.
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