What Are Face Masks Made of?

Author: Vera KoesterORCID iD

We use them all the time, but what are face masks actually made of? How does the filter effect work?

The SARS-CoV-2 virus is released into the ambient air mainly by aerosol particles emitted by infected persons when they breathe. Therefore, the main route of transmission over short distances is droplet infection. Masks can reduce the rate of infection and have, therefore, become very popular since the beginning of the pandemic. The vidoe explains what they are made of and how they work.

Overall, there is still much room to further improve the properties and functions of the masks. PP nonwovens could be replaced with more environmentally friendly fabrics, masks could be coated to destroy viruses and microorganisms, etc.



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