A vacuum cleaner bag was considered the most formidable household material with a rate of nearly 86 percent protection against the smallest particles tested. Falling behind was a standard dish towel at nearly 73 percent; a cotton-blend T-shirt at 70 percent; and an antimicrobial pillowcase at 68 percent.
They also tested how doubling up on the material could help. In the case of dish towels, two layers showed a notable increase in filtration rate — a 14 percent jump for particles of 1 micron in size — although the same level of increased benefits could not be said for cotton shirts or pillowcases.
Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner
Gardens in my mind never need water https://permies.com/t/75353/permaculture-projects/Gardens-Mind
Castles in the air never have a wet basement https://permies.com/t/75355/permaculture-projects/Maison-du-Bricolage-house
Well made buildings are fractal -- equally intelligent design at every level of detail.
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
We live on Blue Planet that circles a ball of fire. Our Planet is circled by a Golden Moon that moves its oceans. Now tell me that you don’t believe in miracles....Unknown
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
Gardens in my mind never need water https://permies.com/t/75353/permaculture-projects/Gardens-Mind
Castles in the air never have a wet basement https://permies.com/t/75355/permaculture-projects/Maison-du-Bricolage-house
Well made buildings are fractal -- equally intelligent design at every level of detail.
Judith Browning wrote:I wonder about using some of the non woven things used in clothing construction like pelon or some other interfacing fabric sold by the yard (or something similar to the vacuum cleaner bags mentioned in Anne's quote above) that might filter but not make such a humidity pocket behind the mask like a cotton fabric does?
Gardens in my mind never need water https://permies.com/t/75353/permaculture-projects/Gardens-Mind
Castles in the air never have a wet basement https://permies.com/t/75355/permaculture-projects/Maison-du-Bricolage-house
Well made buildings are fractal -- equally intelligent design at every level of detail.
Gardens in my mind never need water https://permies.com/t/75353/permaculture-projects/Gardens-Mind
Castles in the air never have a wet basement https://permies.com/t/75355/permaculture-projects/Maison-du-Bricolage-house
Well made buildings are fractal -- equally intelligent design at every level of detail.
Judith Browning wrote:I wonder about using some of the non woven things used in clothing construction like pelon or some other interfacing fabric sold by the yard (or something similar to the vacuum cleaner bags mentioned in Anne's quote above) that might filter but not make such a humidity pocket behind the mask like a cotton fabric does?
"Do the best you can in the place where you are, and be kind." - Scott Nearing
Beth Wilder wrote:
Judith Browning wrote:I wonder about using some of the non woven things used in clothing construction like pelon or some other interfacing fabric sold by the yard (or something similar to the vacuum cleaner bags mentioned in Anne's quote above) that might filter but not make such a humidity pocket behind the mask like a cotton fabric does?
Someone in my local fiber arts guild said, "I've just learned that the filtration membrane in a surgical mask is meltblown polypropylene. Better known to BFAGsters as nonwoven fabric interfacing! A layer of this in your diy surgical masks might be a good idea!" What do you-all think? That in between a couple layers of cotton? It should help hold the mask's shape away from the face, too. This Instructable is the pattern folks around here have started to use, I believe.
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
Beth Wilder wrote:
Someone in my local fiber arts guild said, "I've just learned that the filtration membrane in a surgical mask is meltblown polypropylene. Better known to BFAGsters as nonwoven fabric interfacing! A layer of this in your diy surgical masks might be a good idea!" What do you-all think? That in between a couple layers of cotton? It should help hold the mask's shape away from the face, too. This Instructable is the pattern folks around here have started to use, I believe.
The only thing...more expensive than education is ignorance.~Ben Franklin
Moderator, Treatment Free Beekeepers group on Facebook.
https://www.facebook.com/groups/treatmentfreebeekeepers/
I miss the old days when I would think up a sinister scheme for world domination and you would show a little emotional support. So just look at this tiny ad:
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