Industry News

Masks (hygiene products to filter air entering the nose and nose)


Masks (hygiene products to filter air entering the nose and nose)

A face mask is a sanitary product, generally refers to a device worn on the nose and nose to filter the air entering the nose and nose to prevent harmful gases, odors, and droplets from entering and exiting the wearer's nose and nose, and is made of gauze or paper.
Masks have a certain filtering effect on the air entering the lungs. When respiratory infections are prevalent, wearing masks has a very good effect when working in a polluted environment such as dust.
Masks can be divided into air filter masks and air supply masks.
Material: fabric, filter (meltblown cloth), non-woven fabric, etc.
Foreign name: face mask; antiseptic gauze; gauze mask
Role: Prevent or reduce airborne dust from entering the respiratory organs

Category: Air filter masks and air supply masks


Plane masks are divided into: cotton masks, non-woven masks, polymer masks, activated carbon powder filter masks, activated carbon fiber felt masks.

Size: 18 × 9 (adult), 15 × 9 (child).

Medical or not

Masks are divided into medical masks and non-medical masks.

Item classification

N series: No time limit for protection of non-oily suspended particles
R series: protection of non-oily suspended particles and sweaty suspended particles for eight hours
P series: protection against non-oily suspended particles and sweaty suspended particles without time limit

When the carrier of some particulate matter is oily, and these substances are attached to the electrostatic non-woven fabric, it will reduce the electrical property and allow the fine dust to penetrate. Purpose of dust. So each series is divided into 3 levels: 95%, 99%, 99.97% (ie, 95, 99, 100 for short), so there are 9 categories of filter media.


2 layers of masks: non-woven fabric, bridge of the nose, ear hook.
3 layers of masks: non-woven fabric, bridge of nose, ear hook, filter paper.

Activated carbon mask: non-woven fabric, bridge of the nose, ear hook, filter paper, activated carbon filter paper.


Use time

From the perspective of human physiological structure, because the blood circulation of the nasal mucosa is very strong, the passages in the nasal cavity are very tortuous, and the nasal hairs constitute a filtering "barrier". When air is drawn into the nostrils, the airflow forms a vortex in the tortuous channel, so that the airflow drawn into the nasal cavity is heated. Some tests have shown that when cold air of minus 7 ° C is drawn into the lungs through the nasal cavity, the airflow has been warmed to 28.8 ° C, which is very close to the temperature of the human body. If you wear a mask for a long time, it will make the nasal mucosa fragile and lose the original physiological function of the nasal cavity. Therefore, you cannot wear a mask for a long time. Masks can only be worn in special environments, such as where there are many people and where there is no air circulation. Of course, when walking in the wild, in order to withstand the wind and sand and cold, or activities in an environment with air pollution, you need to wear a mask, but it should not be too long. In addition, during the influenza season, you should wear a mask when visiting public places where there may be a large number of pathogenic bacteria. Wearing a mask is just one of the ways to prevent respiratory infections. The most important thing is to maintain good living habits.

Cleaning and maintenance

The outer layer of the mask often accumulates a lot of dirt, bacteria and other dirt in the outside air, and the inner layer blocks exhaled bacteria and saliva. Therefore, the two sides cannot be used alternately, otherwise the dirt contaminated by the outer layer will directly adhere to When inhaled on the face, it becomes a source of infection. When not wearing the mask, it should be folded into a clean envelope, and the side that is close to the nose and mouth should be folded inward. Do not put it in your pocket or hang it around your neck.

Proper handling of daily use of masks

If the mask is wet with exhaled heat or saliva, its barrier effect will be greatly reduced. Therefore, it is best to prepare a few more masks in order to replace them, and they should be changed and washed once a day. When washing, first blanch with boiling water for 5 minutes.

Masks should be cleaned and disinfected daily. Both gauze masks and air filter masks can be disinfected by heating. The specific approach is:

1. Cleaning. Gently rub the gauze mask with warm water and soap first. The bowl-shaped mask can be gently cleaned with a soft brush dipped in detergent, and then washed with water. Please be careful not to rub hard, because if the warp and weft gap of the gauze is too large, it will lose the effect of preventing droplets.

2. Disinfection. Soak the cleaned face mask in a 2% peroxyacetic acid solution for 30 minutes or cook in boiling water for 20 minutes or put it in a steamer for 15 minutes, then dry it for later use. This method is suitable for gauze masks and bowl masks.

3. Check. Before using it again, you should carefully check whether the masks and masks are still intact. For the gauze masks and masks, you can use the light transmission inspection method. Is the rate consistent? If in doubt, replace it with a new one. In any case, masks and masks are generally updated after 3 to 7 times of cleaning, and masks of particularly good quality can be washed 10 times. Activated carbon adsorption masks should be replaced regularly with activated carbon interlayers. If activated carbon interlayers are not replaceable, they must be replaced after 7 to 14 days. This type of mask cannot be reused after cleaning.

Handle properly

The daily use of masks should be handled properly. Masks used or taken care of by patients should be placed in lined containers in the patient room before disposal.


KN95 mask