How to distinguish the advantages and disadvantages of disposable masks?

First of all, we will make a classification of the types of commonly used masks, non-woven masks can be divided into three kinds (what is non-woven masks, please Baidu), each style is used in different places.

One is a two-layer mask. Generally, the two-layer mask is mainly used in food processing plants. There is no filter melt blown cloth in the middle, but two pieces of non-woven cloth are sewn together. Its main function is to prevent the substances in the mouth from entering the food, such as saliva, snot, cold and so on. Its gram weight is generally about 2 ~ 4.5g.

The second is a three-layer mask, its interlayer is a filter meltblown cloth, suitable for medical structure and outdoor, dust factory and other places. It consists of a double layer of non-woven fabric and a middle layer of filter melt blown fabric.

The third is a disposable four layer activated carbon mask, which adds a layer of activated carbon paper on the premise of the original three-layer non-woven filter paper, which better improves the ability of filtering dust bacteria. That's the gray black mask you see. But it's enough to wear a three-layer mask outdoors. Of course, it's OK to wear a four layer mask outdoors.

matters needing attention

1. Disposable masks should be used within the validity period.

2. It can only be used once and destroyed after use.

3. The package is damaged. It is forbidden to use.

4. Pay attention to production