Melt blowing 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 nonwoven sheet product applicable for filtration, sorbents, apparels and drug delivery. At its heart, meltblown is a fiber-forming process that uses high-velocity hot air to stretch molten polymer into extremely fine fibers. When those fibers land as an interconnected web, they create an airy, porous, lightweight material with powerful filtration and absorption properties. 5 to 10 micrometers in diameter. That's far thinner than a human hair and roughly the same scale as many airborne particles, which is why this. This air flow causes the fibers to remain in a molten state for a longer time than the normal melt spinning line.