Optimum Design of Attenuator of Spun-Bond Production System
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.
[1] W. Michaeli, “Extrusion Dies for Platic and Rubber: Design and
Engineering Computations” Münich: Hanser, 2003.
[2] O. Yilmaz, G. Goren, M. Balaban, and K. Kirkkopru, “The Systematical
Design of Plastic Spiral Extrusion Dies and Validation of Design
Methodology by CFD Analyses” Sigma, vol. 31, pp. 335–349, 2013.
[3] US Patent 5292239 Apparatus for producing nonwoven fabric.
[4] US Patent 3692618 Continuous Filament Nonwoven Web.
[5] US Patent 4812112 Apparatus for making a spun fleece from endless
synthetic-resin filament
[6] US Patent 6183684 Apparatus and method for producing non-woven
web with high filament velocity
[7] C. J. Luo, S. D. Stoyanov, E. Stride, E. Pelan and M. Edirisinghe,
“Electrospining versus fibre production methods: from specifics to
technological convergence” Chem. Soc, vol. 12, pp. 4708-4735, 2012.
[8] E. E. Koslow, “Nanofiber filter media”, 6,872,321, 2005. CONCLUSION
There was a large amount of pressure losses at interior part
of attenuator unit which have been reduced significantly by
changing some design parameters. Also by using the same
properties of inlet a 3 times larger amount of velocity has been
obtained at jet section which will help to protract nanofibers
more than before. Also by using smooth narrowing method at
interior part there will be less vibration which will help to
obtain more uniform spun-bonds.
ACKNOWLEDGMENTS
We gratefully acknowledge the financial support of The
Scientific and Technological Research Council of Turkey
(TUBITAK), through grant number: 112M311.
REFERENCES
[1] W. Michaeli, “Extrusion Dies for Platic and Rubber: Design and
Engineering Computations” Münich: Hanser, 2003.
[2] O. Yilmaz, G. Goren, M. Balaban, and K. Kirkkopru, “The Systematical
Design of Plastic Spiral Extrusion Dies and Validation of Design
Methodology by CFD Analyses” Sigma, vol. 31, pp. 335–349, 2013.
[3] US Patent 5292239 Apparatus for producing nonwoven fabric.
[4] US Patent 3692618 Continuous Filament Nonwoven Web.
[5] US Patent 4812112 Apparatus for making a spun fleece from endless
synthetic-resin filament
[6] US Patent 6183684 Apparatus and method for producing non-woven
web with high filament velocity
[7] C. J. Luo, S. D. Stoyanov, E. Stride, E. Pelan and M. Edirisinghe,
“Electrospining versus fibre production methods: from specifics to
technological convergence” Chem. Soc, vol. 12, pp. 4708-4735, 2012.
[8] E. E. Koslow, “Nanofiber filter media”, 6,872,321, 2005.
[9] A. Kılıç, “Eriyikten Elektroüretim Yöntemiyle Nanolif Üretimi”, Fen
Bilimler Enstitüsü, ĐTÜ, 2008.
[10] S. Ramakrishna, K. Fujihara, W. E. Teo, Z. W. Ma, T. C. Lim, “An
Introduction to Electrospinning and Nanofibers” World Scientific
Publishers, Singapore, 2005.
[1] W. Michaeli, “Extrusion Dies for Platic and Rubber: Design and
Engineering Computations” Münich: Hanser, 2003.
[2] O. Yilmaz, G. Goren, M. Balaban, and K. Kirkkopru, “The Systematical
Design of Plastic Spiral Extrusion Dies and Validation of Design
Methodology by CFD Analyses” Sigma, vol. 31, pp. 335–349, 2013.
[3] US Patent 5292239 Apparatus for producing nonwoven fabric.
[4] US Patent 3692618 Continuous Filament Nonwoven Web.
[5] US Patent 4812112 Apparatus for making a spun fleece from endless
synthetic-resin filament
[6] US Patent 6183684 Apparatus and method for producing non-woven
web with high filament velocity
[7] C. J. Luo, S. D. Stoyanov, E. Stride, E. Pelan and M. Edirisinghe,
“Electrospining versus fibre production methods: from specifics to
technological convergence” Chem. Soc, vol. 12, pp. 4708-4735, 2012.
[8] E. E. Koslow, “Nanofiber filter media”, 6,872,321, 2005. CONCLUSION
There was a large amount of pressure losses at interior part
of attenuator unit which have been reduced significantly by
changing some design parameters. Also by using the same
properties of inlet a 3 times larger amount of velocity has been
obtained at jet section which will help to protract nanofibers
more than before. Also by using smooth narrowing method at
interior part there will be less vibration which will help to
obtain more uniform spun-bonds.
ACKNOWLEDGMENTS
We gratefully acknowledge the financial support of The
Scientific and Technological Research Council of Turkey
(TUBITAK), through grant number: 112M311.
REFERENCES
[1] W. Michaeli, “Extrusion Dies for Platic and Rubber: Design and
Engineering Computations” Münich: Hanser, 2003.
[2] O. Yilmaz, G. Goren, M. Balaban, and K. Kirkkopru, “The Systematical
Design of Plastic Spiral Extrusion Dies and Validation of Design
Methodology by CFD Analyses” Sigma, vol. 31, pp. 335–349, 2013.
[3] US Patent 5292239 Apparatus for producing nonwoven fabric.
[4] US Patent 3692618 Continuous Filament Nonwoven Web.
[5] US Patent 4812112 Apparatus for making a spun fleece from endless
synthetic-resin filament
[6] US Patent 6183684 Apparatus and method for producing non-woven
web with high filament velocity
[7] C. J. Luo, S. D. Stoyanov, E. Stride, E. Pelan and M. Edirisinghe,
“Electrospining versus fibre production methods: from specifics to
technological convergence” Chem. Soc, vol. 12, pp. 4708-4735, 2012.
[8] E. E. Koslow, “Nanofiber filter media”, 6,872,321, 2005.
[9] A. Kılıç, “Eriyikten Elektroüretim Yöntemiyle Nanolif Üretimi”, Fen
Bilimler Enstitüsü, ĐTÜ, 2008.
[10] S. Ramakrishna, K. Fujihara, W. E. Teo, Z. W. Ma, T. C. Lim, “An
Introduction to Electrospinning and Nanofibers” World Scientific
Publishers, Singapore, 2005.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:69637", author = "Nasser Ghassembaglou and Abdullah Bolek and Oktay Yilmaz and Ertan Oznergiz and Hikmet Kocabas and Safak Yilmaz", title = "Optimum Design of Attenuator of Spun-Bond Production System", abstract = "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.
", keywords = "Attenuator, nanofiber, spun-bond.", volume = "9", number = "4", pages = "619-4", }
