Common masks are the following: ordinary cotton masks, disposable face masks (such as medical surgical masks), N95 face masks. Disposable Face Mask Supplier shares with you.
disposable face masks (medical surgical masks)
It can prevent respiratory tract infection to a certain extent and cannot prevent haze.
There are three layers of medical surgical mask, from the outside to the inside are waterproof layer, filter layer and comfortable layer. The comfortable layer is a layer of non-woven fabric. When wearing, the white non-woven fabric is facing in, the blue waterproof layer is facing out, and the side with the metal sheet is facing up. Don't put it on backwards. After the rubber band is hung on the ears, pinch the metal sheet to fit the nose, smooth the cheeks, and try not to leave a gap between the mask and the face.
Please pay attention when purchasing, you should choose a mask on the outer package clearly marked "Medical Surgical Mask".
Can effectively prevent respiratory infections, can prevent haze.
The N95 face masks is one of nine anti-particulate masks certified by NIOSH (National Institute of Occupational Safety and Health). "N" means unsuitable for oily particles (oil fume produced by cooking is oily particles, and droplets produced by people speaking or coughing are not oily); "95" means filtering under the detection conditions specified by the NIOSH standard The efficiency reaches 95%.
N95 is not a specific product name. As long as the product meets the N95 standard and passes the NIOSH review, it can be called a "N95 mask".
The biggest feature of N95 type mask is that it can prevent droplet infection caused by patient's body fluid or blood splash. The size of the droplets is 1 to 5 microns in diameter. The U.S. Occupational Safety and Health Administration (OSHA) requires medical institutions that medical workers exposed to tuberculosis bacteria must wear masks above the N95 standard.
Compared with medical surgical masks, N95 face masks are better closed. When choosing a N95 mask, try to choose a N95 face mask without a breathing valve.
Its material may be cotton, gauze, wool, canvas, and velvet. Because the material itself is not dense enough, it cannot serve the purpose of preventing infection.