Respirator is a kind of sanitary products, generally refers to the mouth and nose is used to filter the air entering the nose and mouth, in order to achieve the role of blocking harmful gases, odors, droplets, viruses and other substances, made of gauze or paper.

Masks have a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent and when working in a polluted environment such as dust, wearing a mask has a very good effect.

N series: no time limit for protection of non-oily suspended particles

R series: Protect non-oily suspended particles and sweaty oily suspended particles for a period of eight hours

P series: no time limit for protection of non-oily suspended particles and sweaty oily suspended particles

When the carrier of some particulates is oily, and these substances are attached to the electrostatic non-woven fabric, the electrical properties will be reduced, and the fine dust will penetrate. Therefore, the filter material for preventing the oil and gas sol should undergo special electrostatic treatment to prevent the fineness. The purpose of dust. So each series is divided into 3 levels: 95%, 99%, 99.97% (that is, referred to as 95, 99, 100), so there are 9 small categories of filter materials.

Uit die oogpunt van menslike fisiologie is die bloedsomloop in die neusslymvlies baie sterk, die kanale in die neusholte is baie kragtig, en die neushare vorm 'n filterende "versperring". As lug in die neusgange gesuig word, vorm die lugvloei 'n draaikolk in die kronkelende kanaal, wat die lugvloei in die neusholte verhit. Sommige toetse het getoon dat wanneer koue lug by minus 7 ° C deur die neusholte in die longe ingetrek word, die lugvloei verhit is tot 28,8 ° C, wat baie naby die temperatuur van die menslike liggaam is. As u lank 'n masker dra, sal die mukosa in die neus broos word en die oorspronklike fisiologiese funksie van die neusholte verloor, so u kan nie 'n lang masker dra nie. Maskers kan slegs in spesiale omgewings gedra word, soos plekke met baie mense en geen lugsirkulasie nie. Dit is natuurlik nodig om 'n masker te dra om in die natuur te loop om wind en sand te weerstaan, of om in 'n omgewing met lugbesoedeling te beweeg, maar die tyd moet nie te lank wees nie. Verder, in die griepseisoen, na openbare plekke gaan waar 'n groot aantal patogene kan voorkom, moet u ook 'n masker dra. Die dra van 'n masker is slegs een van die maniere om aansteeklike siektes te voorkom. Die belangrikste is om goeie lewensgewoontes te handhaaf.