What kind of masks do not provide safety protection? What are the types of masks?

When we wear masks, everyone has different needs. Some wear masks to keep warm, some wear masks to filter dust, and some wear masks to filter viruses and bacteria. So what kind of masks do not have a safety protection function? Do you know? How many types of masks are there? Is it normal for a new mask to have a smell when worn? Encyclopedia Knowledge Network will show you how to do it.

Contents of this article

1. What kind of masks do not have a safety protection function?

2. Masks are divided into several types

3. Is it normal for a new mask to have a smell?

What kind of masks do not have a safety protection function?

Ordinary cloth masks, thermal masks, masks that have been used for more than three days, etc. do not have a safe protective effect. Cloth masks and thermal masks play a very small role in blocking bacteria and preventing virus invasion, because masks with protective functions require professional medical fabrics.

The shelf life of an unopened disposable medical mask is generally 2-3 years from the date of production. It is not recommended to wear a mask that has exceeded its shelf life.

Before wearing a mask, you should check the shelf life of the mask and whether it is damaged or contaminated. It is best not to reuse the mask because its protective ability will decrease with the number of uses.

The two sides of the mask cannot be worn alternately because the outer layer of the mask will accumulate a lot of pollutants such as dust and bacteria from the outside air.

There are several types of masks

There are three types of masks: medical protective masks, medical surgical masks and ordinary medical masks. Medical protective masks are suitable for medical staff to protect against respiratory infectious diseases, while medical surgical masks are mostly used for basic protection of medical staff. In addition, ordinary medical masks are used to prevent splashes in the mouth and nose.

1. Medical protective masks

Masks include medical protective masks, such as N95, KN95 and other masks, which are mostly used for medical staff to protect against respiratory infectious diseases. They are a kind of tight-fitting self-priming filtering protective equipment that can block most bacteria and prevent the spread of viruses in hospitals.

2. Medical surgical masks

Masks include medical surgical masks, which are mostly used for basic protection of medical staff or related personnel. The protection level is medium. Medical surgical masks can prevent the discharge of microorganisms carried by medical staff during breathing and avoid affecting surgical patients.

3. Ordinary medical masks

Masks include ordinary medical masks, which are generally used to isolate the splashes exhaled from the mouth and nose. They are used for hygiene care in ordinary medical environments, such as cleaning bed sheets, hygienic cleaning, and liquid preparation. The filtration efficiency requirements for bacteria or particulate matter are relatively low.

Is it normal for a new mask to have a smell?

It is normal for new masks to have a smell. Masks will be disinfected before they are sold. During the disinfection process, the masks will be contaminated with the smell of disinfectant, which does not affect their use. When wearing a mask, the end with the steel wire should face upwards, then cover the nose and mouth, and fix the steel wire on the bridge of the nose, and finally fasten the ropes on both sides.

1. Normal

It is normal for new masks to have a smell. Although the mask itself has no smell, it will be disinfected and sterilized after production. During this period, the mask will be stained with the smell of disinfectant, but it will not affect its use. If you mind, you can leave the mask for three days and use it after the smell fades.

2. How to wear

When wearing a mask, point the end with the wire upwards, then use the mask to cover your nose and mouth, and bend the wire along both sides of the bridge of the nose to fit the bridge of the nose. Finally, smooth the mask and hang the ropes on both sides on your ears or tie them behind your head.

3. Notes

The medical masks you buy are generally disposable items and should not be worn for more than eight hours, otherwise the mask will lose its ability to prevent viruses and bacteria. Also, when using the mask, do not squeeze the mask with your hands to avoid getting bacteria on the outside of the mask or squeezing bacteria into the inside of the mask.