Thesis Details

Thesis Title: The influence of entanglement and fiber finish on flat filament weft yarn in air jet weaving
Thesis Author: Desiree Lawless
Abstract: Air jet weaving has been commercially available since the early 1950s and is one of the newest weaving technologies. There is still much to be learned about air jet weaving machines and the yarns that are processed on them. One of the hardest types of yarns to process on an air jet weaving machine is flat filament weft yarn. Flat filament yarns are yarns that have very little to no surface texture. Since air is the medium used to transport the weft yarn across the width of the weaving machine, flat filament yarhs pose a unique problem in air jet weaving. The lack of surface texture on the weft yarns inhibits the ability of the air streams to propel the weft yarn. However, these yarns can be entangled to aid them in crossing the width of the machine. In addition, all filament weft yarns have finish applied to them to withstand the abrasive actions of textile processes. The amount of fiber finish applied also has an effect on the transportation of the weft yarn across the width of the air jet weaving machine. The purpose of the research was to determine the effect of entanglement and fiber finish levels on the performance of flat nylon weft yarns when woven on air jet machines. The results of this research indicate that high levels of entanglement and low levels of finish provide the best weft insertion performance and fabric quality. In addition, low fiber finish also provided the lowest compressed air pressure.