Dust Blocking Efficiency Method Of Mask

Cov plua plav thaiv kev ua haujlwm ntawm lub npog ntsej muag yog ua raws li nws cov kev tiv thaiv zoo rau cov plua plav zoo, tshwj xeeb tshaj yog rau cov plua plav ua pa qis dua 2.5 microns. Vim tias hmoov av ntawm qhov loj me no tuaj yeem nkag mus rau alveoli ncaj qha, nws muaj kev cuam tshuam loj tshaj plaws rau tib neeg kev noj qab haus huv. Lub hauv paus ntsiab lus ntawm kev thaiv cov plua plav ntawm lub qhov ncauj qhov ntswg yog cov tshuab pom, uas yog, thaum cov plua plav tsoo cov ntaub qhwv, nws dhau los ntawm cov khaubncaws sab nraud povtseg, thaiv qee qhov loj ntawm cov plua plav hauv cov ntaub xuab zeb. Rau qee cov plua plav zoo, tshwj xeeb tshaj yog cov plua plav tsawg dua 2.5 microns, nws yuav dhau los ntawm cov ntaub nplaum thiab nkag mus rau hauv lub ntsws. Plua plav pov thawj qhov ncauj qhov ntswg yog tsim los ntawm activated carbon fiber mats los yog non-woven fabrics raws li cov ntaub ntawv lim. Respirable plua plav tsawg dua 2.5 microns raug thaiv thaum lub sij hawm hla cov khoom siv lim no los lim cov huab cua.