At the beginning of 2020, the most famous slogan is to wear a mask, wash your hands frequently, and not go out at home! It is to contribute to the country! Academician Zhong Nanshan has repeatedly emphasized that wearing a mask when going out is the most effective way to prevent infection!
Regular medical treatment Surgical mask is a 3-layer protective structure, referred to as SMS structure for short.
The outermost layer has a water-blocking effect, which can prevent droplets from entering the mask; the middle layer has a filtering effect, which can block >90% of 5¦Ìm particles; the inner layer near the mouth and nose is used to absorb moisture.
The principle of mask protection
KN95 can have such a strong protection ability, the core secret lies in the principle of electrostatic adsorption. Tear open the KN95 mask, inside is a layer of meltblown non-woven fabric. This kind of meltblown non-woven fabric is made of polypropylene. It is a kind of ultra-fine electrostatic fiber. The biggest feature is that it has electrostatic adsorption ability after electret treatment. When the airflow you breathe passes through the non-woven fabric, the air passes through normally, and all dust and toxic droplets are absorbed by static electricity. If you think about the way your hair is adsorbed by sweaters in winter, you probably know the principle of KN95 protection. After the air dust is adsorbed by static electricity, it is extremely difficult to separate, and there is no way to clean it. As long as the static electricity is there, the dust and germs will be there.
If the static electricity is gone, then the mask will be scrapped and become an ordinary cotton mask. The most fear of static electricity is water. Many people are ignorant of reusing masks after washing. I wrote this article urgently after seeing many people washing their masks. If it gets wet, it will be useless, I will emphasize it again. The regular KN95 level protective masks have a shelf life because they will lose static electricity and become waste products when stored for a long time.
Benefits are coming
Adult masks in stock
Masks that are hard to find on the market are in stock
Is the price expensive?
mask 1.99 yuan/piece