KN95 medical protective mask conforms to the Chinese GB 2626 mandatory standard and the Chinese national standard GB 19083-2010 "Technical Requirements for Medical Protective Masks". KN95 medical protective mask can filter the particles in the air and block pollutants such as droplets, blood, body fluids and secretions, and the filtration efficiency of non-oily particulate matter is ≥95%.
The features of KN95 medical protective mask
The important performances of KN95 medical protective mask include filtration efficiency, adhesion, liquid barrier performance, comfort, hygiene, and biological safety testing. Generally, there is a hydrophobic protective layer on the outer surface of the mask, and no breathing valve. As shown in the picture above, the KN95 medical protective mask is arch-shaped. So it has a better fit with the wearer's face compared to the strip-shaped medical surgical mask and ordinary medical mask.
The features of KN95 medical protective mask
Main applications of KN95 medical protective mask
KN95 medical protective mask is commonly used in hospital infection departments, fever clinics, epidemic prevention stations, disease control centers and other medical institutions. It is classified as Class II medical devices.
Composition of KN95 medical protective mask
KN95 medical protective mask consists of nose clip, mask tightening band and mask face. The face mask is divided into inner, middle and outer layers. The inner layer is ordinary sanitary gauze or non-woven fabric, the middle layer is a single layer or multiple layers of ultra-fine polypropylene fiber meltblown material layer and ES hot air cotton, and the outer layer is non-woven fabric or ultra-thin Polypropylene meltblown material layer. The KN95 medical protective mask with this structure is highly hydrophobic and breathable, and has a significant filtering effect on tiny virus aerosols or harmful fine dust, and the overall filtering effect is good.
Composition of KN95 medical protective mask
Precautions for using KN95 medical protective mask
1. KN95 medical protective masks cannot be washed, because washing will damage the filter material and structure of the mask face, nor can it be disinfected with alcohol. When it is not contaminated and damaged, and meets the hygienic requirements, it can be placed in a ventilated place, and then considered for use again.
2. KN95 mask is not a product trademark or brand, it is a Chinese requirement for the filtration efficiency level of professional anti-particulate respirator. It refers under the test conditions specified in the standard, the filtration efficiency is at least 95% to non-oily particulate matter. (such as dust, paint mist, acid mist, microorganisms, etc.)
3. The higher the filtering efficiency of the mask, the greater the resistance to breathing. Therefore, wearing a KN95 medical protective mask for a long time is not good for people. Unless necessary, do not wear it for a long time.
4. About the frequency of mask replacement, there is no clear conclusion at present. And China has not yet made relevant regulations on the use time of masks. Some researchers have conducted research on the protection efficiency and wearing time of KN95 medical protective mask. The results show that the filtration efficiency of KN95 masks is still above 95% after wearing 2 days, and the respiratory resistance does not change much. The filtration efficiency is reduced to 94.7% after wearing 3 days.
