Yarn evenness parameters optimization in jetring spinning process

What is it about?

In this study, the effects of air nozzles called jetring or nozzlering, on yarn quality which is used as an additional process in conventional ring spinning machines have been investigated. The response surface methodology (RSM) was used to investigate the yarn properties value. In the experiment, Ne30/1 100% cotton fibers were used. In all jetring yarn productions, the air pressure was kept at 125 kPa (gauge). In all samples, the nozzle length was kept 27 mm and twisting chamber diameter was kept Ø2mm. The number of injectors has been kept constant as 4 pieces. Giving the best yarn quality as a result of RSM, injector diameter Ø0.5 mm and injector angle 35° as determined. With this nozzle structural configuration, yarn hairiness values were reduced by 9.2% but yarn irregularity values were increased by 0.7%, yarn elongation values were decreased by 6.2% and yarn tenacity (cN/tex) values decreased to 5.6.

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Photo by Mat Reding on Unsplash

Photo by Mat Reding on Unsplash

Why is it important?

The textile sector on the yarn slope line the measurement and evaluation of yarn hairiness and hairiness variation is a significant part of the total quality control of a yarn. Particularly, as a result of various technological developments, the increase in machine speeds and the increase in the quality expectation, yarn hairiness has become an important yarn parameter which should be controlled by measuring. This is a parametric study using quartic RSM analysis on angle and diameter parameters of jetring injector. The study examines the effects of injector structural parameter changes on yarn hairiness, yarn irregularity, yarn elongation and yarn tenacity.

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