Investigation and Comparative Evaluation of Fabric Inner Structure Weaved With Different Looms

Abstract

Usually several types of looms are used in factories. Wool and semi-wool fabrics are weaved with such looms, where weft yarn insertion is with rapier or projectile, ordinarily. It was noticed that, properties of fabrics with the same setting parameters, but weaved with not identical technological parameters are different. These differences can be seen only from fabric cross-section analysis or differences of stress-strain curves. The microscopical investigations and tensile properties of fabrics were done. The differences can be seen clearly from the initial part of stress-strain curves, which characterizes fabric structure and was confirmed by crimp analysis of 1 m length. Such difference occurs for fabrics with elastic component lycra in weft, while without lycra fabrics structure are the same. The reason of presented phenomena can be technological and constructional parameters of the looms, which in different looms usually are not the same. The small differences of technological parameters do not influence fabrics without lycra, but have the great influence for fabrics with lycra because the elastic component of yarn is very sensitive for various effects.