4 ms·
Meltblown isn't that limited in supply and from all the masks it is wasted mostly on surgical masks, not N95, since surgical masks use the same sickness meltblo
by jk700 6y ago
Meltblown isn't that limited in supply and from all the masks it is wasted mostly on surgical masks, not N95, since surgical masks use the same sickness meltblown layer, but are produced in much higher quantities.