Last March, 2020, I had made many face masks- both for Veterans and for civilians. I have designed a few different types. This month, I designed a five-layer face mask, because many people were wearing two layers, and I myself don't like to wear two masks, if I can wear one that has enough layers.
Most of my face masks are two layers of tightly woven cotton. My five-layer masks are that, with an inner, enclosed lining of the surgical mask fabric, which gives a total of five layers. Because the surgical mask fabric is entirely enclosed, it never gets contaminated.
White researching this, I found a set of three links regarding the study of how well fabrics block contaminants, including fabrics that people had to rely on last spring.
These links are:
-Scientific Comparison of COVID-19 Face Mask Materials: T-shirts, Socks, Jeans, Vacuum Bags, N95
-Respiratory Protection Engineering Task Force
-Ability of fabric face mask materials to filter ultrafine particles at coughing velocity
