Basics

A Process for Manufacturing Nonwoven Fabric of a very fine nature
Used mainly for filters, but also has many other applications
Not to be confused with Blow Molding
Uses fine nozzles for plastic which are surrounded by high velocity air to essentially atomise it
Melt-blown plastic is a material for making N95 masks, or HEPA filters as well.
Similar Processes are used for Fiberglass, Basalt Fiber...And Cotton Candy, although this is typically done with a linear, rather than radial output (see the patent section)

Patents