The structural and tensile properties of glass/polyester co-wrapped hybrid yarns

This research describes the structural and tensile properties of glass/polyester hybrid yarns produced by co-wrapped and side-by-side technologies. Based on co-wrapping technology, the hybrid yarn is composed of polyester and glass fibers as shell and core structure, respectively. In order to produce this type of yarn, a new machine was designed and manufactured to investigate the influence of linear densities (16, 50.67, and 67.11 tex) and wrapping densities (115, 180, and 230 turns/m) of polyester fibers. It was found that the linear and wrapping densities have a significant effect on the structural and tensile properties of the final hybrid yarn. In order to compare, another type of hybrid yarn was also been investigated by hybridization of glass and polyester fibers (16, 50.67, and 67.11 tex) via side-by-side method. In comparison with the side-by-side and single glass yarns, the co-wrapped yarns have higher breaking load and tenacity due to the lateral compression force of the wrapped filament. The results show a 62% increase in breaking load of co-wrapped hybrid yarns in comparison with the side-by-side and single glass yarns.