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Biology and Medical
Effect of Melt-Blown (MB) filter fibers of facial masks on lung tissues
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[QUOTE="Shinyoung Noh, post: 6316681, member: 572424"] [B]TL;DR Summary:[/B] I heard Asbestos or rockwool(?) is cancer causing material since its fiber is too thin (<3um), I also heard glass wool is still safe to use since its fiber is thick(>4um) Then I see some high-grade facial masks which has <3um thin fibers for filtration and they are sticked to the noses to be used. How is it safer compared to Asbestos ? I came up with a curiosity whether having a facial mask on face to breathe can actually be safe to lungs in the following aspect. I remember when I was young, Asbestos was so popularly used in construction. and now, people wear Hazmat suits to remove any remaining Asbestos since it is first-class(?) cancer causing material. I heard Asbestos is harmful because the fiber is too thin, makes fine dusts which gets into lungs, never gets digested, causes inflammation which ends up being a cancer. I also heard glass wool is still used and is safe because its fiber is thick (>5um), does not make fine dusts floating around in the air, therefore,never gets into lungs. Then, I see many high-grade facial mask products emphasizing upto how small particles they can filter. One of the commercial I saw was saying their mask can filter max-level fine dust since their filter's fiber is ~0.1 um. I see most of facial masks uses Melt-Blown(MB) filters which is similar or the same process of making Asbestos and glass wools. Then, I do not see how it can be safe to be place right on the nose to inhale. [/QUOTE]
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Effect of Melt-Blown (MB) filter fibers of facial masks on lung tissues
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