<Classification of non-woven masks>
Masks on the market are mainly divided into three categories, one is cotton yarn masks with low filtration efficiency; one is disposable medical masks with slightly higher filtration efficiency and non-woven material; the other is protective masks with higher filtration efficiency .
Wear masks should pay attention to the principle of special personnel, if you exchange the use at will, it may lead to cross-infection and other consequences; the principle of non-repetitive use, disposable masks need to be replaced daily, and cannot be reused.
Reusable cotton masks should be cleaned in time and placed in the sun for exposure and disinfection. Used cotton masks will absorb bacteria and dust, and will come into contact with different sources of pollution in your pocket. If you wear it again without washing, it is very likely to cause respiratory infections.
<Definition of N95 mask>
N95 medical mask is one of 9 anti-particulate masks certified by NIOSH (National Institute of Occupational Safety and Health). “N” means particles that are not suitable for oily (oily smoke produced by cooking is oily particulate matter, and the droplets generated by people talking or coughing are not oily); “95” refers to the test version specified in the NIOSH standard answer Under the conditions, the filtration efficiency reaches 95%. N95 is not a specific product name. As long as it conforms to the N95 standard, and products that pass the NIOSH review can be called “N95 masks.”
<FFP2 mask filtering effect>
The FFP2 mask( Minimum filtering effect> 94%)is one of the European mask standards EN149: 2001. Its function is to adsorb harmful aerosols, including dust, smoke, mist, toxic gas and toxic vapor, etc. through the filter material, blocking it from being inhaled by people.
The filter material of FFP2 mask is mainly divided into four layers, that is, two layers of non-woven fabric + one layer of sprayed fabric + one layer of needle-punched cotton.