What kind of mask is practical?

Masks must be the right size and worn in the right way for them to be effective. There are generally two types of masks sold in the market: rectangular and cup-shaped. A rectangular mask must have at least three layers of paper structure in order to have a protective effect.

The user should press the wire on the bridge of the nose and spread the entire mask along the bridge of the nose to be effective. The child wears a rectangular surgical mask because it does not have a fixed shape and fits snugly against the child's face if it is tied well. Cup-shaped masks should be effective by ensuring that the mask is dense enough after being attached to the face and that the air will not leak out when exhaled.

When wearing a cup-shaped mask, try to blow with your hands over the mask to check for air leakage from the edges of the mask, and if the mask is not tightly covered, reposition it before putting it back on.

I recommend wearing a mask.

First, whether it is water vapor or fog, there will be dirty air when you go out, such as car exhaust, avian flu and so on. Wearing a mask is a great way to protect yourself.

Second, the air is very cold in winter, and it is very warm to wear a thick mask to avoid catching a cold Third, there are many styles of masks nowadays, not just white gauze!! Put on a mask and show a hazy you

There are a lot of practical masks.

First, the dust blocking efficiency of masks. The dust blocking efficiency of the mask is based on its blocking efficiency against fine dust, especially respirable dust below 5 microns. Because this particle size of dust can directly enter the alveoli, right.

The impact on human health is the greatest. The general gauze mask, its dust blocking principle is mechanical filtration, that is.

When the dust collides with the gauze, it passes through layers of barriers, and some large particles of dust are blocked in the sandcloth. However, some fine dusts, especially those smaller than 5 microns, pass through the mesh of the gauze and enter.

Respiratory system. Now there are some dust masks abroad, the filter material is composed of fibers filled with permanent static electricity, and those respirable dust smaller than 5 microns are attracted by static electricity and adsorbed in the filter material in the process of passing through this filter material.

to fine dust, which really plays a role in dust barrier.

Clause. Second, the degree of fit between the mask and the shape of the face. Air is like the flow of water, **resistance is small, the first to flow**.

When the shape of the mask does not fit the face, the dangerous substances in the air will leak in from the misfit and enter the person's respiratory tract. So, even if you choose a mask with a good filter material. Nor can it guarantee your health.

Now many foreign regulations and standards stipulate that workers should regularly conduct mask fit testing. The purpose is to ensure that workers choose the right size of mask and follow the correct steps to wear it.

Clause. 3. Comfortable to wear. It is required that the breathing resistance should be small, the weight should be light, the wearing should be hygienic, and the maintenance should be convenient. In this way, workers will be happy to wear it in the workplace and be more productive. Now foreign maintenance-free masks, no.

Use cleaning or replacement parts, and discard the mask when the dust is saturated or the mask is damaged, which not only ensures the hygiene of the mask, but also saves the time and energy of workers to maintain the mask. And many masks have an arched shape, which can be guaranteed to be with.

The shape of the face fits well and retains a certain amount of space at the mouth and nose, making it comfortable to wear.

A black mask that can be used to commit crimes.

Whether it's because of a cold or because of air quality problems, masks are one of the very good daily necessities, which can effectively isolate the outside air and is beneficial to the health of the body. When buying masks, everyone is undoubtedly concerned about two points, one is the filtration effect, and the comfort of wearing, what is the most practical mask? Let's share a few easy-to-use masks, let's take a look!

Shigematsu CDD11V-KN95-2K anti-smog mask.

Shigematsu CDD11V-KN95-2K anti-smog mask.

If you want to say what mask is the most practical, of course, it is indispensable to blow up the whole network before, Shigematsu is a well-known mask brand in Japan, from Japan's professional respiratory protective equipment manufacturer - "Shigematsu Manufacturing". This mask is designed according to the structure of the human face, which is not only comfortable to wear, but also very effective in blocking the outside air. The nose position is grooved and automatically fits the bridge of the nose.

Moreover, its protection level belongs to N95, and according to actual measurements, its filtration efficiency has reached. For easier breathing, it features a high-performance exhaust valve and a reversible fin edge airtight structure.

3M9501VKN95 Folding Protective Mask.

3M9501VKN95 Folding Protective Mask.

This mask from 3M belongs to the KN95 level, and it comes with a breathing valve, which is classic and versatile. This mask can effectively remove exhaled moisture and heat, and is comfortable to wear without affecting normal breathing. In addition, the 9501VKN95 folding protective mask can prevent dry particulate matter, and has a dust and haze prevention efficiency of more than 95%.

Honeywell H950V KN95 grade mask with valve.

Honeywell H950V KN95 grade mask with valve.

This mask from Honeywell has a breathing valve, which is not only comfortable to wear, but also very good in expelling exhaled moisture and heat, its breathing resistance is small, the foldable design can be easily carried out, the aluminum nose clip is easy to play and easy to fold, and the filtration level also meets China's KN95 standard. However, it should be noted that this mask is not washable.

pittamask dustproof and pollen breathable mask.

pittamask dustproof and pollen breathable mask.

This is an Internet celebrity mask, because of its thin, soft material and comfortable wearability, so it will be liked by everyone. The filtration effect of this dust-proof and pollen-proof mask is very good, if you want to say what mask is the most practical, you can take a look at the shared one, it can be washed, and the filtration of pollen after cleaning is still as high as 99%, in addition, its appearance is also higher, which is very suitable for daily wear!

If you don't know what mask is the most practical, you might as well take a look at the masks shared above, which are not only comfortable to wear, but also will not affect normal breathing, which can be said to be a very good choice.

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The production standard of medical protective masks (KN95 N95) is GB19083-2010, and the standard number of medical surgical masks is: YY0469-2011. The real disposable surgical mask has a total of three layers of filtration, please find out whether there is the word "YY0469-2011" on the mask packaging before purchasing, if there are such letters (numbers)**, it proves that this mask is a mask that meets the national standard of YY0469-2011 "Medical Surgical Mask".

Usually, the outer packaging of more formal medical surgical masks will be marked with the product registration number. The numbering rule is usually as follows: X device note (X is the abbreviation of each province, such as Hubei, Zhejiang, Guangdong, etc.) Registration year 264 (indicating that it belongs to Class II medical device 64 classification) Number.

It can be identified by the National Medical Products Administration's **.

Distinguish between real and fake masks

1. Look at the label.

Non-domestic masks, as long as they enter the country through formal channels, must have LA labor safety certification, and domestic masks, whether they are used for domestic use or export, must have QS labels and LA certification.

2. Check the official website.

If you want to judge the authenticity of a mask, another trick is the query function of the National Medical Products Administration. All masks produced by regular manufacturers can be found on the official website of the State Food and Drug Administration.

3. Smell the smell.

There is no obvious peculiar smell in the regular product, only a faint activated carbon fragrance.

1. Both N95 masks and surgical masks are useful.

2. The N95 mask is one of the 9 types of anti-particulate masks certified by NIOSH. N means that it is not suitable for oily particles (the oil smoke produced by stir-frying is oily particulate matter, and the droplets produced by people talking or coughing are not oily), 95 means that the filtration efficiency reaches 95% under the detection conditions specified in the NIOSH standard.

3. N95 mask is a mask with a breathing valve, the function of the breathing valve is to use a mask with a breathing valve to help you feel more comfortable when exhaling in a working environment with hot humidity or poor ventilation or large amount of labor. Duration of use: It depends on the personal use and environment, but if you find that you have difficulty breathing or feel unwell, the mask is contaminated with foreign objects such as blood stains or droplets, the user feels that the breathing resistance has increased, and the mask is damaged, etc., the mask should be replaced immediately.

4. The medical surgical mask mainly uses polypropylene as the main raw material, and these ultra-fine fibers with a unique capillary structure increase the number and surface area of fibers per unit area, so that the meltblown cloth has good filtration and shielding.

The difference between sterilized and non-sterilized masks is the degree of sterilization and protection.

Different degrees of sterilization:

Most of the surgical masks are the highest-grade and most protective masks, and the sterilizable masks will be further sterilized and completely sterile within the effective packaging of the masks.

The protective effect is different:

The protective effect of the two masks is different, and the protective effect of sterilized medical masks is generally better than that of non-sterilized medical masks, which can effectively block the source of pollution from being absorbed by the human body.

How to choose a mask:

1. Disposable medical masks: they are easy to wear, but they have poor protective effect, which can only prevent respiratory droplets and external droplets, and play a role in blocking and barriers, and are mainly used in dense places in non-epidemic areas. It can protect the droplets generated during conversation from infecting each other.

However, it is not waterproof, so the protection is relatively poor.

2. Blue disposable surgical mask: it has a certain waterproof effect and stronger protective function. It is recommended that the wearing group is a professional medical staff, and it can be worn when it comes into contact with suspected patients, which can play a certain protective role.

However, the airtightness is poor, so it is not recommended to use this mask when coming into contact with confirmed patients or high-risk groups, and you can use a mask with stronger protection.

3. Medical protective masks: The protective effect is better, that is, the commonly known N95 mask, which can be effectively attached to the face and prevent bacteria and viruses from eroding the respiratory tract. The use of such masks by confirmed patients can also prevent their own droplets of bacteria and viruses from being transmitted to others, and the protective effect is very good.

And these masks have been shaped to fit snugly around the nose.