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Nonwoven melt-blown fabrics are porous. As a result, they can filter liquids and gases. Their applications include water treatment, masks, and air-conditioning filters. During the COVID-19 pandemic, the price of meltblown spiked from few thousand USD per ton to approximately 100 thousand USD per ton.
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applicable for filtration, sorbents, apparels and drug delivery systems. The substantial benefits of melt blowing are simplicity, high specific productivity and solvent-free operation. Choosing an appropriate combination of polymers with optimized
51:. The same phenomenon applies for melt blowing of polymers. The first research on melt blowing was a naval attempt in the US to produce fine filtration materials for radiation measurements on drone aircraft in the 1950s. Later on,
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is a conventional fabrication method of micro- and nanofibers where a polymer melt is extruded through small nozzles surrounded by high speed blowing gas. The randomly deposited fibers form a
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developed the first industrial process based on the melt blowing principle with high throughput levels. China produces 40% of the non-woven fabric in the world with the majority produced in
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Sarbatly R.; Kamin, Z. & Krishnaiah D. (2016). "A review of polymer nanofibres by electrospinning and their application in oil-water separation for cleaning up marine oil spills".
206:. The high drug throughput rate (extrusion feeding), solvent-free operation and increased surface area of the product make melt blowing a promising new formulation technique.
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and materials. It is particularly known for its ability to produce fine fibers, which can be used in various applications. Here's an overview of how melt blowing works:
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Wei, Q. F.; Mather, R. R.; Fotheringham, A. F. & Yang, R. D. (2003). "Evaluation of nonwoven polypropylene oil sorbents in marine oil-spill recovery".
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Nonwoven materials can retain liquids several times their own weight. Thus, those made from polypropylene are ideal for collecting oil contamination.
140:: The force of the air stretches and elongates the molten polymer into very fine fibers, which are then collected on a moving conveyor belt or drum.
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Ellison CJ, Phatak A, Giles DW, Macosko CW, Bates FS (2007). "Melt blown nanofibers: Fiber diameter distributions and onset of fiber breakup".
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Polymers with thermoplastic behavior are applicable for melt blowing. The main polymer types commonly processed with melt blowing:
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and surface properties, scientists have been able to produce melt-blown fibers with an average diameter as small as 36 nm.
225:"Influence of rheology and surface properties on morphology of nanofibers derived from islands-in-the-sea meltblown nonwovens"
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128:: The process begins with a polymer resin being melted and extruded through a spinneret, which is a device with tiny holes.
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Melt-blown fabrics have three qualities that help make them useful for clothing, especially in harsh environments:
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544:"Melt-blown and electrospun drug-loaded polymer fiber mats for dissolution enhancement: A comparative study"
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The high absorption of melt-blown fabrics is exploited in disposable diapers and feminine hygiene products.
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During volcanic activity a fibrous material may be drawn by vigorous wind from molten basaltic magma called
354:"China export credit insurance company releases domestic mask supply and demand risk analysis and outlook"
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Wehmann, Michael; McCulloch, W. John G. (2012). "Melt blowing technology". In Karger-Kocsis, J. (ed.).
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Shaumbaugh, R.L. (1988). "A macroscopic view of the melt-blowing process for producing microfibers".
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Balogh, A.; Farkas, B.; Faragó, K.; Farkas, A.; Wagner, I.; Van Assche, I.; et al. (2015).
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Microscopic image of the outer layer of a surgical mask, made from melt blown polymer filaments
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Shimozuru, D. (1994). "Physical parameters governing the formation of Pele's hair and tears".
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The main uses of melt-blown nonwovens and other innovative approaches are as follows.
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What is Melt-Blown
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373:"Overview and analysis of the meltblown process and parameters"
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Melt blowing can produce drug-loaded fibers for controlled
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Melt blowing is a manufacturing process used to create
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