An adhesive-aided ring spinning for improving cotton yarn quality with the aid of sodium carboxymethyl cellulose solution

Peiying Li,Fengxin Sun,Mingrui Guo,Weidong Gao

doi:10.1177/1558925020927837

Abstract

An adhesive-aided ring spinning was developed to improve cotton yarn quality through the wetting and adhesion effect of an adhesive solution, namely, sodium carboxymethyl cellulose solution on fibrous strand in yarn formation zone during spinning process. The spinning mechanism of the adhesive-aided ring spinning with sodium carboxymethyl cellulose solution was analyzed, and the effects of two factors, that is, speed ratio (the ratio of the linear surface velocity to the output speed) and sodium carboxymethyl cellulose concentration, on the yarn performance are investigated. The experiment results reveal that the adhesive-aided ring spinning with sodium carboxymethyl cellulose concentration of 0.7% can significantly reduce yarn hairiness indicated by the hairiness S3 value reducing to 69% and still showing a prominent reduction (65%) after winding process. It has been found that a slightly faster linear surface velocity of the cylinder of the adhesive-aided ring spinning compared with the output speed of the yarn is more beneficial to the reduction of yarn hairiness S1+2 value. Meanwhile, the higher sodium carboxymethyl cellulose concentration also contributes to a higher breaking strength (increasing from 18.24 to 21.12 cN/tex) and lower breaking elongation (reducing from 4.98% to 4.08%). The abrasion resistance of adhesive-aided ring spun yarns also shows an obvious improvement of 12.8%. Therefore, the newly developed adhesive-aided ring spinning with the sodium carboxymethyl cellulose solution provides an effective method to enhance the quality of cotton yarns.

Highlights

Ring spinning has a long history and a simple structure; it is the most common spinning method for its good yarn quality, wide ranges of yarn counts, and high raw material adaptability.[1]
In order to compare the differences of yarn hairiness, breaking strength and elongation, abrasion resistance and yarn twist between the adhesive-aided ring spun yarns and conventional ring spun yarns, a one-way analysis of variance (ANOVA) was applied, and the differences were determined using a significance level of 0.05, which represents the estimated probability of rejecting the null hypothesis when there is no difference between the two kinds of yarns
The results show that the adhesive-aided ring spun yarns have an obvious reduction in yarn hairiness, and higher CMC-Na concentration attains more reduction in yarn hairiness for both bobbin and cone yarns

Summary

Introduction

Ring spinning has a long history and a simple structure; it is the most common spinning method for its good yarn quality, wide ranges of yarn counts, and high raw material adaptability.[1]. Yarn sample “S1.0-C0.4” means the adhesive-aided ring spun yarn was spun with the speed ratio of 1.0 and CMC-Na concentration of 0.4%.

Results

Conclusion