Abstract:
Abstract: Production of better yarns in terms of uniformity is every spinner’s goal
since yarns with a large number of irregularities and defects reduces the market value
of the end product. This study aimed at studying the influence of count, twist, opening
roller speed and rotor speed on the number of thin and thick places formed in 100%
cotton rotor spun yarns using statistical techniques. The results obtained in this
research work indicated that increase in count increased thin and thick places in the
yarns. With twist and opening roller speed, thin and thick places were reduced up to a
certain value and then started to increase. Count 15Ne, twist multiplier of 5TM,
opening roller speed of 8000 rpm and rotor speed of 90,000rpm gave the lowest
number of thin and thick places/km formed in the resulting yarns.
