%0 Journal Article
	%A Nasser Ghassembaglou and  Abdullah Bolek and  Oktay Yilmaz and  Ertan Oznergiz and  Hikmet Kocabas and  Safak Yilmaz
	%D 2015
	%J International Journal of Mechanical and Mechatronics Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 100, 2015
	%T Optimum Design of Attenuator of Spun-Bond Production System
	%U https://publications.waset.org/pdf/10001106
	%V 100
	%X Nanofibers are effective materials which have
frequently been investigated to produce high quality air filters. As an
environmental approach our aim is to achieve nanofibers by melting.
In spun-bond systems extruder, spin-pump, nozzle package and
attenuator are used. Molten polymer which flows from extruder is
made steady by spin-pump. Regular melt passes through nozzle holes
and forms fibers under high pressure. The fibers pulled from nozzle
are shrunk to micron size by an attenuator; after solidification, they
are collected on a conveyor. In this research different designs of
attenuator system have been studied; and also CFD analysis has been
done on these different designs. Afterwards, one of these designs
tested and finally some optimizations have been done to reduce
pressure loss and increase air velocity.

	%P 609 - 612