When it comes to disposable masks, it can be roughly divided into ordinary disposable masks and medical disposable masks.
Ordinary disposable masks are generally made of two layers of 28g non-woven fabrics, with environmentally friendly plastic strips on the bridge of the nose, which are comfortable to wear and suitable for electronics factories and daily life.
However, the composition of disposable medical masks is more complicated. The surface of this mask is usually divided into an inner layer, a middle layer and an outer layer. The inner layer is a skin-friendly material made of ordinary sanitary gauze or non-woven fabric, the middle layer is generally an isolation filter layer made of ultrafine polypropylene fiber meltblown material, the outer layer is an antibacterial layer, and the antibacterial layer is generally non-woven or Made of ultra-thin polypropylene meltblown material.
Medical disposable masks are also a common name. Simply put, medical disposable masks can be divided into: medical protective masks, medical surgical masks and ordinary medical masks.
Ordinary medical masks have the lowest level of protection. From the perspective of production standards, such masks generally lack filtration efficiency requirements for particles and bacteria. Therefore, ordinary medical masks are only suitable for blocking the saliva exhaled from the oral cavity and nasal cavity. The medical surgical masks with medium protection level can block most bacteria and some viruses, which can not only prevent people from being infected, but also prevent some bacteria from being carried in the breath of people . From the perspective of production requirements, medical surgical masks require a bacterial filtration efficiency of 95%.
The highest level of protection is medical protective masks, which are suitable for wearing in hospitals when they come into close contact with patients with respiratory infections spread by air or droplets.
N95 mask is a medical protective mask. It should be noted here that N95 is not a product name, let alone a manufacturer's name, but a certification code name. As long as the medical mask meets the N95 standard and passes the NIOSH inspection product, it can be called "N95 mask".
Disposable masks also have limitations
It is worth noting that respiratory infectious diseases are not only spread through the respiratory tract, so wearing disposable masks is not foolproof. The mouth, nose and even eyes are the "channels" for entering the virus, so you must pay attention to the hygiene of your body in normal times!
Respiratory protection can only reduce the risk of illness, but it cannot completely eliminate the risk. We should know that prevention and treatment are sometimes two different things, and reducing risks and eliminating risks are two different things. Even medical protective masks cannot completely isolate pathogens.
If the mask does not fit the user's face, that is, it will cause serious leakage. Disposable masks are designed according to most people's face shapes, but some people's face shapes are not suitable for wearing disposable masks, but ordinary medical masks can be adjusted, so you must adjust them when you wear them!