Abstract
Currently, ring spinning has limitations of poor integration of fibers that protrude from yarn surface, which causes hairiness and irregularity. The aim of this research is to improve yarn quality by modification of bottom apron/nose bar with perforation and applying air-suction in a conventional Reiter G35 ring frame and spinning 29.52 Tex (20 Ne) and 14.76 Tex (40 Ne). To produce modified yarn 17 combinations of apron hole diameter, suction pressure, and widthwise hole distance was used. The ANOVA result shows that as suction pressure increases hairiness, tenacity, and thick place (+50%/km) were improved significantly for both counts. Based on the result suction pressure, apron hole diameter, and hole distance were optimized to 23.9 mbar, 1.58 mm and 10 mm respectively for 40 Ne and 25 mbar, 1.75 mm, and 11.6 mm respectively for 20 Ne. As compared with conventional hairiness, tenacity, thin place, and thick place of 40 Ne modified yarn were improved by 16.25%, 12.7%, 17.42%, and 14.62% respectively. Whereas hairiness, tenacity, and thick place of 20 Ne modified yarn were improved by 8.87%, 7.42%, and 18.2% respectively. Thus, the modified G35 method of yarn condensing has capability to be used as an alternative method of conventional spinning as it is capable of producing better quality yarn.
Highlights
The textile industry is more competitive today than ever in an attempt to produce high-quality clothes at minimal production costs that meet both the aesthetic and technical needs of todays’ generation [1]
The analysis was done by design expert with Box-Behnken design and comparison was done by independent samples t- test using Analysis of Variance (ANOVA) statistical software were used
Effect of Apron Hole Diameter, Suction Air Pressure, and Width-wise Hole Distance on Properties 40 Ne Ring Yarn Table 3 shows the average yarn test result for 40 Ne yarn spun on the modified G 35 ring
Summary
The textile industry is more competitive today than ever in an attempt to produce high-quality clothes at minimal production costs that meet both the aesthetic and technical needs of todays’ generation [1]. The main objective of yarn spinning is to achieve the highest predictable yarn evenness with minimum imperfections, which imparts uniformity in yarn strength These improvements positively influence the quality of subsequent processes, like weaving and knitting [5, 6]. The attempts to produce high-quality yarns have been concerned with great developments in the area of spinning [9] These developments consist of examining, manufacturing, and optimizing various mechanisms and settings in spinning to modify conventional rings by introducing new elements or developing entirely new yarn production systems. Yarn quality refers to the physical characteristics of a yarn that influence fabric production, performance, and serviceability These parameters include yarn hairiness, yarn strength, imperfection, and yarn evenness [10, 11]
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