It's not easy. You need a special machine that is about $4.5m USD and I'm guessing they are in high demand right now. I got this info from this article the oth

It's not easy. You need a special machine that is about $4.5m USD and I'm guessing they are in high demand right now. I got this info from this article the other day so not expert opinion if anyone can give better. https://www.npr.org/sections/goatsandsoda/2020/03/16/814929294/covid-19-has-caused-a-shortage-of-face-masks-but-theyre-surprisingly-hard-to-mak https://www.npr.org/sections/goatsandsoda/2020/03/16/8149292...