What is the difference between medical masks and ordinary masks?

1. The number of layers is different

Medical mask is composed of 2113 mask body and tension belt, 5261 of which the mask body is divided into 4102 inner, middle and outer layers. Ordinary medical 1653 mask is a common gauze mask, which has four layers, eight layers and sixteen layers.

2. The protective effect is different

The ordinary mask is used to filter the air entering the mouth and nose, so as to prevent harmful gases, odors and droplets from entering and leaving the wearer's mouth and nose.

Medical mask, comfortable, tasteless, without glass fiber, has no irritation to the skin and is waterproof. After disinfection, it can kill or remove pathogenic microorganisms on the media and make it harmless; And it can prevent dust. Because of the small respiratory resistance and wearing hygiene, it can absorb aerosol, dust, smoke, fog drops, poisonous gas and toxic vapor by filter materials, and prevent them from being inhaled by people, thus effectively isolating pollution sources.

Extended data:

Medical masks are generally divided into cotton gauze masks, medical surgical masks and N95 masks

1. Cotton gauze mask: it can prevent part of the virus from invading, but it has poor tightness with human face and low anti-virus efficiency.

2. Medical surgical mask: it is divided into three layers, the outer layer blocks water, the middle layer blocks the air with 5 μ m particles larger than 90%, and the inner layer absorbs moisture.

3. N95 medical protective mask: N95 is certified by the National Institute of occupational safety and health. N refers to non oily particles, 95 refers to the filtration rate of 95% under the standard detection conditions, with good tightness