Wear masks carefully, to learn about the knowledge in masks

Masks serve as a filter barrier to protect our respiratory system and can effectively prevent infectious diseases. It is necessary to choose and wear a mask properly.

At present, the masks on the market are mainly divided into three categories, one is cotton masks with low filtering efficiency; one is disposable medical masks with slightly higher filtering efficiency and non-woven material; and the other is protective masks with high filtering efficiency .

Cotton face mask

The utility model relates to a mechanical filtering mask, which exerts a filtering function by blocking layers of cotton cloth. Cotton masks have the lowest filtering efficiency and can only have a certain blocking effect on coarse particles like hair, but they have the best warmth and comfort.

Disposable mask

Non-woven fabric is the main material, the filtering effect is slightly higher than that of cotton masks.

Medical masks without the words “protection” and “surgical” are ordinary disposable medical masks. This level of masks does not require blood barrier properties or tightness requirements. For very fine particles, disposable The protective effect of masks is not as good as protective masks. Therefore, it is only used for general medical environment. But it can be used for larger particles, such as anti-dust, pollen and flying floc.

Disposable medical mask

Medical surgical mask

Medical surgical masks are used for the protection of droplets. Medical surgical masks need to be worn in infectious diseases and fever clinics. It is divided into 3 layers, the outer layer has a water blocking effect, which can prevent droplets from entering the mask to the inside; the middle layer has a filtering effect, which can block particles larger than 5 μm in the air, and the filtering effect is ≥90%; the inner layer near the nose and nose is used for Hygroscopic. However, medical surgical masks have limited filtering efficiency for particles and are mostly rectangular in design, and their closeness to the face is not as tight as that of medical protective masks.

Medical surgical mask

Protective mask

Medical protective masks are commonly referred to as N95 masks. Medical protective masks have a filtration efficiency of greater than 95% for non-oily 0.3μm particles. Medical protective masks have a good fit with the wearer’s face, which can filter particles in the air and block flying. Contaminants such as foam, blood, body fluids, secretions, etc., can filter non-oily particles to more than 95%. It is a personal protective equipment commonly used to deal with airborne diseases.

The protection is high, and the breathability and moisture absorption of the mask are also deteriorated, which means that the wearing comfort is reduced, and the wearing time cannot be too long.

Medical protective mask

For the general public of non-high-risk occupational groups, it is not necessary to wear N95 masks to prevent new coronavirus pneumonia, and medical surgical masks can also block most of the virus stuck to the droplets from entering the respiratory tract.

Masks are worn incorrectly and the results will be greatly reduced

  1. Wash your hands before wearing a mask.
  2. When wearing a disposable medical mask, fully unfold the folded surface, completely cover the mouth, nose, and jaw, and then press the nose clip so that the mask fits the face completely. Also note that disposable masks have inside and outside points, and the light-colored side has moisture absorption. It should be close to the mouth and nose, with the dark side facing outward. To detect whether the mask is tightly connected to your face, the method is very simple. Take a deep breath, and then quickly blow a few breaths, and you will find out whether your nose or mouth is leaking.
  3. After wearing the mask, try not to touch the mask. If you must touch, remember to wash your hands before and after you touch it.
  4. When removing the mask, try not to touch the outside of the mask. Remember to wash your hands immediately after removing the mask.

Precautions

Wear masks should pay attention to the principle of special person, if you exchange and use at will, it may lead to cross infection and other consequences.

Do not use it repeatedly. Disposable masks need to be replaced every day. They cannot be reused.

For reusable cotton masks, care should be taken to clean them in time and place them in the sun for disinfection. Used cotton masks will absorb bacteria and dust, and will be carried in your pocket and will be exposed to different sources of pollution. If you wear them again without cleaning, they may cause respiratory infections.

Children over 3 years old can choose to wear gauze and cotton masks, because these masks are better at filtering dust, but also more comfortable, breathable, and more suitable for children. In addition, pay attention to taking off masks and breathing fresh air. Patients with respiratory diseases, especially asthma patients, the elderly, and children, may wear breathing masks for a long time.