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Abstract:
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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.
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