Why is the innermost layer of the mask the most absorbent?

The outermost layer of the mask, like the innermost material, is spunbond, which mainly plays the role of blocking pollutants. The reason why it is made of different colors is that the blue or green of the outer layer is more resistant to dirt and blends in with the environment of the operating room. For masks, the real key role is the middle layer of meltblown cloth, which has high fiber density, small pores, and a filtration effect of more than 95%.

The standard surgical mask is divided into 3 layers, and the outer layer has a water-blocking effect to prevent droplets from entering the mask; The middle layer has a filtering effect, which can block 90% of 5 m particles; The inner layer near the mouth and nose is used to absorb moisture.

Because people breathe with steam, it is necessary to absorb water well, so it is more comfortable to wear.

As there is vapor in human breath, water absorption is necessary. It's comfortable to wear.

Because it contains a sponge.

It's good without moisture.

Advantages: very good ventilation; Able to filter toxic gases; Able to keep warm; Can absorb water; Able to be waterproof; Elastic; will not be unkempt; It feels very good and quite soft; Compared with other masks, the texture is relatively light; It is very elastic and can be restored after stretching; **Relatively low, suitable for mass production.

It's good without moisture. There is water vapor in the mask, and it needs to be replaced if it is worn for a long time or if the mask is contaminated or damaged. Normal breathing brings out some water vapor, which is more pronounced in winter when the temperature difference is relatively large.

If there is a lot of water vapor in the mask, you can place the mask in a ventilated place to dry before use, and avoid folding or pocketing the mask after use, which may transfer the germs from the outer layer of the mask to the inner layer of the mask, and it is easy to cause infection when worn again.

Precautions for the use of disposable masks.

Don't buy inferior masks, not only can not play a role in preventing germs and sand, but also harm people's health, and its pungent smell is easy to cause dizziness and allergies, which makes the face red with itching.

Disposable masks are only suitable for ordinary occasions, if there is haze weather, anti-haze masks should be used, and special work occasions need to use special masks, such as spray paint, dust masks need to be used for brushing paint, doctors need to use sterilized or sterilized medical masks, etc. Don't think that just wearing a disposable mask is all right.

The above content refers to People's Daily Online-How should used disposable masks be disposed of?

Disposable masks, of course, are not as good as moisture when worn.

If there is moisture during wearing, it means that the mask is not breathable. So a good mask is, of course, better to choose a breathable one.

I think it's good that there is no moisture, and if there is moisture, it means that the door is easy to grow bacteria if it is not breathable, and it is good to buy without moisture!

It's good if there is no moisture, but the mask is uncomfortable with moisture.

It should be better with moisture.

The waterproof layer of the mask is on the outside. Generally speaking, a standard surgical mask has three layers, the innermost layer is the absorbent layer, which can absorb the moisture of the wearer's mouth and nose; The middle layer is called the filter layer, which can effectively block particles; The outer layer is the water barrier, which mainly acts as a barrier to splashing liquids.

Medical masks are mostly three or more layers, which have the effect of isolating bacteria and dust. Medical masks are disposable protective equipment, which are safe and reliable, reducing the risk of secondary infection. Generally speaking, the outermost layer is the waterproof layer, which can not only block the external moisture, but also prevent splashing saliva, droplets, etc.; The middle layer is the layer that blocks the particles carried inside.

There is also a saying that there are three layers of medical surgical masks, which are waterproof layer, filter layer, and comfort layer from the outside to the inside. When wearing the mask, the white gauze is facing inward, the blue waterproof layer is facing outward, and the side with the metal sheet is facing up. Hang the rubber band on both ears and pinch the metal sheet to fit the nose and smooth the cheeks so that there is no gap between the mask and the face.

It should be noted that it is best to dispose of used disposable masks to a dedicated disposal point, mainly for the health of yourself and others.

The effect is definitely there, but because the mask becomes damp, its effect will be greatly reduced. I can tell you very responsibly, not to mention that you are wearing a wet mask, you just cover your mouth with your hands, and it will also have a certain protective effect, but it is not as protective as a wet mask. In the same way, a wet mask is certainly not as protective as a dry one.

You must know that there are many kinds of masks, strictly speaking, not all masks have a protective effect, like the kind of cotton masks worn in daily life, although there is a certain protective effect, but in fact, the protective ability of this protective mask against bacteria and viruses is almost zero, which is not determined by the wetness or dryness of the mask, but by the closure of its material. Take the rise and fall of the spray cloth for making masks when the epidemic broke out, usually more than 10,000 yuan a ton, and even rose to 20 tens of thousands of tons when it was in demand.

So, it doesn't matter if there is moisture on the mask, what matters is what material your mask is made of and how wet it is. You must know that the production of masks is strictly enforced, and the protection capacity of general medical masks is about 50%, and the protection rate of masks like N95 is about 80% 90%, which cannot reach 100%, and although masks can achieve such a high protection rate, if the way of wearing is different and the storage environment is different, it will also lead to a decrease in the protection rate of masks.

Therefore, if conditions permit, if you are often outdoors, you must change your mask frequently, but if you are not in a high area, you can appropriately extend the wearing time of the mask. The most important thing is that the epidemic is still a bit serious, and it is better not to stay outside for too long and try to return to a closed home if it is not necessary. But I can tell you responsibly that even if the mask is wet, it can still play a protective role to a certain extent.

1 is generally normal.

It is very likely that there are water droplets on the outside of the mask because the exhaled air contains water, so the water in the gas condenses on the outside of the mask, resulting in the formation of water droplets, which is generally normal, and the formation of water droplets on the inside layer is more common.

It is not possible to judge the quality of the mask by whether it has formed water droplets, and if it is felt that the quality is not good, you can take the method of testing the quality.

2 points for specific situations.

Generally, masks are breathable, but there are differences in the degree of spine, because non-breathable masks will cause people to lack oxygen, so medical surgical masks and medical protective masks are breathable, but ordinary disposable medical masks and surgical masks will have better air permeability, and the protective effect of medical protective masks will be stronger, and relatively speaking, the air permeability will be poorer.

And when the thickness of the mask reaches a certain standard, the breathability will always be hindered, and wearing a mask with poor breathability for a long time will cause a lack of oxygen due to insufficient oxygen, so it is necessary to control the breathability within a reasonable range while paying attention to the isolation effect.

3. The mask plays the role of guarding against the missing key is the melt-blown cloth, which is located in the middle layer of the mask, and its structure is dense and white; The spunbond fabric has a relatively loose structure, high transparency, and the meltblown fabric has a very low strength, and it is broken by hand, and the spunbond fabric has a high strength, which requires a lot of force to tear.

Inferior masks are thin, have good light transmittance, and have a dense meltblown cloth structure that is almost opaque; Many fake and shoddy masks that do not contain meltblown cloth have high light transmittance, and the face is faintly visible when worn.

4. The darker side of the mask is the front, and the lighter side is the back, so you need to wear it with the front facing outward.

The outer layer of the mask has a water-blocking function, so it is relatively smooth. The inner layer is mostly made of materials with good air permeability, which is conducive to breathing and is more comfortable to use. Therefore, you need to wear a mask during use, otherwise it is likely to cause the effect of the mask to fail.