What are the differences between medical masks and ordinary masks?

Oct. 19, 2018

In the fall, the haze is getting worse and worse, and street pedestrians wear various types of dust masks to prevent smog. For example, medical surgical masks, medical masks, cotton thickened masks, etc., medical masks are usually high-efficiency electrostatic filter materials, while ordinary masks are printed patterns, the appearance is very beautiful. So, what are the differences between medical masks and ordinary masks? Are their effects the same?

The characteristics of the medical mask are light, comfortable, tasteless, glass-free, non-irritating to the skin, waterproof, and disinfected to kill or remove pathogenic microorganisms on the medium to make it harmless; Dust-proof, due to low respiratory resistance, wearing sanitation, adsorption of aerosols, dust, smoke, mist, poisonous gas and toxic vapor through the filter material, blocking and not being inhaled by humans, effectively insulting the source of pollution.

The common mask is a fiber mask. Its blocking principle is a mechanical barrier. Through this layer of mechanical barrier, large particles can be blocked, but particles less than 5 microns in diameter can't stop, let alone PM2.5 particles, but medical masks and medical disposable masks can block particles larger than 4 microns in diameter, so a common mask should wear 16 layers to achieve the effect of a medical mask.

In addition to high hygiene requirements, medical respirators should also have the function of effectively blocking liquid splashing. Due to the possibility of blood or contagious body fluid splash during surgery, this kind of splash has a certain pressure, not a general liquid infiltration, and the ability of medical mask materials to block pressurized liquid should be relatively high. Effectively protect medical staff.

Therefore, in the standard of medical protective masks, special testing methods are used to test the barrier liquid properties of such products, and the 3M dust masks used in general industrial environments do not need such special requirements, and the testing standards are also Naturally there is no such regulation.

In addition, medical respirators are not allowed to have an exhalation valve. This is because when the medical protective mask is used as a surgical mask, if the mask with the exhalation valve is worn, the microorganisms carried in the exhalation will be directly discharged out of the mask, posing a threat to the patient undergoing surgery. Many industrial protective masks have the design of an exhalation valve, but the price of a dust mask with an exhalation valve is much higher than that without a valve.

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What are the differences between medical masks and ordinary masks?