Yasaman Ekbia; Nazanin Ezazshahabi; Houshang Nosraty
Abstract
Three-layer woven fabrics with two warp and three weft systems are considered as thick fabrics, in whichthe third wadded weft yarn group is used to increase the thickness, to color ...
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Three-layer woven fabrics with two warp and three weft systems are considered as thick fabrics, in whichthe third wadded weft yarn group is used to increase the thickness, to color separate two layers, and tostitch the top and bottom layers. The purpose of this study was to investigate the effect of changing theweave pattern and the count of wadded weft yarn in the fabric structure on the physical properties of thefabric including air permeability, thickness and compression energy, thermal resistance and water vaporpermeability. In this research, weft wadded yarns with the fineness of 24/2, 36/2, and 48/2 Nm and weavestructures of “plain-plain”, “twill 2/2- twill 2/2” and “twill 2/2- plain”, in the top and bottom layers, wereused for fabric production. After the production of fabrics, experiments were performed to investigatethe effect of the wadded yarn fineness and the weave structure on the physical properties of the fabrics.Analysis of the results showed that in comparison of various weave structures, the “plain-plain” had thehighest air permeability and water vapor permeability and the least thickness and heat resistance. “Twilltwill”showed the maximum thickness and heat resistance and the lowest amount of air permeabilityand water vapor permeability. In view of the effect of wadded yarn count, it was found that the 24/2 Nmyarn had the highest air and water vapor permeability, and the lowest thickness and thermal resistance.The 48/2 Nm yarn had the maximum thickness and thermal resistance and at the same time exhibited theminimum air and water vapor permeability.
