Local nurse designs mask with 99.5% filtration efficiency
https://www.universityhealthsystem.com/~/media/files/pdf/news/tm-2020-mask-pattern.pdf
Tommy Austin talks about the TM2020 mask. You can see the materials needed and the design.
Ingredients needed:
Swimmer's tape
Surgical drape fabric
Merv 13 fabric
1/8" elastic tape
Metal nose bridge strips
All purpose thread
Instructions
- Cut two 12 x12 pieces of AC filter material with a Merv rating of 13 or higher. Cut two pieces of 1/8 inch elastic: neck piece is 8 inches and head pieces is 10 inches. Please measure your head and neck if you want a tighter seal.
- Fold the 12 x 12 inch square of fabric in half.
- Fold Fabric 1 inch upward on each side to create air pocket. This fold creates the air pocket that allows the user to breathe better and avoid carbon dioxide build up.
- Measure mask across the face from cheek to cheek and mark.
- Press down seams at top of mask for ½ inches
- Trim edges across the top of the mask
- Insert metal nose piece and stitch it in place.
- Stitch each end elastic to each corner at the top of the mask. Stitch all layers together using a straight stitch. The filter material should be sandwiched between layers of the cotton fabric or surgical drape.
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