Effect of Changing Front Top Roller Pressure of Drafting Zone of a Ring Frame on the Quality of Cotton-Flax Blended Yarn

Md Masum Reza,Mohammad Nayemul Islam,Mohammad Naim Hassan,Sharif Ahmed

doi:10.4236/jtst.2022.81003

Abstract

Pressure applied on the top roller of drafting zone is a vital factor on which the quality of ultimate yarn depends. Drafting zone is needed to reduce the mass per unit length of input material. Appropriate contact of top rollers with bottom rollers is necessary to ensure proper drafting. In this paper, the effects of different front top roller pressure of drafting zone on the quality of 20Ne cotton-flax blended yarns (C:L = 45:55) were studied. It was observed that a higher pressure value gives a lower co-efficient of mass variation, imperfections, hairiness and higher evenness, tenacity, elongation properties.

Highlights

The arm pressure loads of roller drafting system in ring frame machine have a great influence on the yarn properties to produce a high quality yarn
0.73Ne roving were produced through speed frame (Toyota FL-16) and 20Ne cotton-flax blended yarns were produced in ring frame machine (Jingwei F-1520)
Produced yarns are collected from these eight spindles by changing front top roller pressures were 18, 14, 10 kgs respectively and tested on an USTER TESTER-5 machine for testing count, evenness, co-efficient of mass variation, imperfection, hairiness, Count Strength Product (CSP), tenacity and elongation

Summary

Introduction

The arm pressure loads of roller drafting system in ring frame machine have a great influence on the yarn properties to produce a high quality yarn. Yuemin et al [7] studied the effects of block gauge, pressure on the front rollers and break draft on a modified drafting system based on the ring spinning frame to produce 18.2 tex cotton yarn. Previous studies showed that most of the works on top arm pressure are applied to cotton and synthetic yarns but till little is known about the effects of top arm pressure on cotton-flax blended yarns In this project, we used a ring frame machine (jingwei F-1520) where spring loaded pressure arm was used. The main object of this study was to investigate the yarn quality parameters by changing the front top roller pressure of drafting zone to optimize the yarn quality

Materials

Methods

Result

Discussion

Findings

Conclusion