From my estimate, they produce plastic resin in pellet form. Imagine a material that is like coarse plastic sand. If you are making a respirator mask, another

From my estimate, they produce plastic resin in pellet form. Imagine a material that is like coarse plastic sand. If you are making a respirator mask, another factory will take these pellets, heat it to melting, and basically spray the hot plastic to form a sheet with very fine plastic fibers. Because the fibers need very specific properties, they probably use a custom plastic resin, not a regular commodity resin. If you are making protective clothing, a different factory will take the pellets, heat it to melting, and slowly extrude it through a nozzle. Once you get a sheet, you cut it to size, and maybe glue some different pieces together. https://www.youtube.com/watch?v=W6V0w-ajtN8 https://www.youtube.com/watch?v=W6V0w-ajtN8