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Abstract:
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Slashing and weaving operations are under a constant demand for increased
performance and production with a reduced level of cost. To satisfy the desire for
production, weavers are increasingly turning to air jet machines for faster speeds. The
faster production speeds and insertion mechanics of the air jet weaving machine have
placed renewed emphasis on the quality of the slashed warp. One of the slashed yarn
properties under increased scrutiny from air jet weavers is warp yarn hairiness. This
property has surfaced because of the inability of the stream of air to penetrate
obstructions in the shed created by clinging yarns resulting from protruding fibers. One
way of combating warp yam hairiness is through increases in size add-on. However, this
response brings increased cost in the sizing area which may not be tolerated in today's
global competition.
This research was conducted to determine the effects of pre-wetting warp yarns
prior to the sizing operation on slashed yarn quality, weaving performance, and selected
finished fabric properties. The conditions which were pre-wet were run at significantly
lower levels of size add-on than the control to determine if improvements associated with
pre-wetting could be obtained at a reduced level of cost. This experiment was limited to
711 Ne 100 percent cotton ring spun warp yarns woven on the Nissan LA-51 air jet
weaving machine.
The general conclusion of this research is that pre-wetting yields equivalent or
improved product quality and machine performance in slashing and weaving at a reduced
range of percent add-on as compared to conventional sizing.
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