Chapter 8 - Conversion of Fibre to Yarn: An Overview

Abstract

The chapter describes different types of yarns in terms of their structures, properties and applications. Appropriate yarn structures and manufacturing technologies are selected for required applications and properties. Detailed definitions and manufacturing principles for different types of yarns are provided. Particular emphasis is given to various types of fancy yarns, which are described with suitable diagrams and detailed explanations of their manufacturing methods. In the case of synthetic continuous-filament yarns, manufacturing methods including melt spinning, wet spinning, dry spinning and gel spinning techniques are explained and different forms of continuous-filament yarns are dealt with, such as flat yarns, textured yarns, bi-component yarns and split tape or film yarns. In case of staple-fibre yarns, manufacturing technologies including ring, rotor, air-jet spinning and Vortex spinning are explained together with the type of yarn structures obtained from the respective technologies and their end-uses.