This is how meltblown nonwovens are made

The meltblown process is similar to the spunlaid process. A high velocity hot gas stream impinges on a molten polymer stream as the polymer extrudes from a small capillary in the die. The force of the gas in a turbulent flow rapidly attenuates the filament from a diameter of about 500 micron at the capillary down to filament diameters as small as 1 micron.