Abstract
Abstract Coir fibre is a non-conventional fibre extracted from the husk of coconut fruit and is abundantly available in tropical countries. Coir yarn is produced in the decentralised cottage industry. Increase in the demand for the coir fibre yarns for value-added applications has forced the coir yarn manufacturers to improve the existing coir spinning machine in different ways. In this study, the working principle of the existing coir spinning machine has been studied from the perspective of further improvements in production rate, yarn quality and spinning performance. Modifications have been made in the existing coir spinning machine in fibre feeding, opening and cleaning. There is improvement in the production rate of up to 20% with significant improvements in the yarn quality and spinning performance.
Highlights
Coconut fibre, a non-conventional fibre [1], is extracted from the outer shell of coconut fruit
From the studies conducted in the industry, it was observed that the production speed is limited to 10 m min−1 for spinning 6.0-ktex yarn in the existing coir spinning machines
The openness value as measured in this method is dependent on the specific volume of coir fibre
Summary
Coconut (coir) fibre, a non-conventional fibre [1], is extracted from the outer shell of coconut fruit. The limitations of the existing mechanised coir spinning system have been studied and modifications have been made in fibre feeding, opening and cleaning segments to achieve higher production rates and improved quality of the yarns. The linear density of the resultant two-ply coir yarns made from mechanised coir spinning machine is generally in the range of 6.0–7.2 ktex.
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