With the consumption of medical materials and protective equipment, the demand and quality of respirators has become a hot topic. Silicone mask can be used repeatedly. Compared with disposable mask, it has a longer service life.
How to distinguish masks: from which standards? From the current situation, of course, the higher the dust-proof level, the better. Now the dust-proof mask must comply with gb2626-2006 standard. Dust masks are divided into kn100, kn95 and Kn90. Among them, kn100 can achieve nearly 100% (99.97% above) protective effect on Ultrafine dust. If the particle size is large, kn95 grade can be selected. The protection effect depends on two aspects.
One is the filtration efficiency of filter cotton.
The second is the air leakage rate after the mask and face are combined. Therefore, masks must be divided into size, regardless of size, the leakage rate of masks and faces varies from person to person.
The way of clearing dust: scientific selection of dust mask certified by gb2626-2006 standard is helpful to prevent lung injury.
1. Choose the double half mask type. Due to high air leakage rate, disposable masks are not suitable for long-term or occupational protection.
2. Select kn100 level. High dust environment and low protection rate will lead to physical injury.
3. Masks are in different sizes, which is extremely important. It is not recommended to buy the so-called universal masks, which are easy to leak.
4. There are two kinds of masks: covering nose and mouth, covering nose and jaw. The latter is recommended, which is relatively comfortable.
5. It is recommended to choose a smooth breathing mask. Some masks are designed with double filter cotton and double filter face, so they can breathe smoothly and have a long service life.
6. It is recommended to evaluate the quality, grade, comfort and economy of occupational protection, and choose a good mask for effective prevention of pneumoconiosis.
What are the advantages and effects of silicone mask? Silica gel mask has been developed for anti poison and anti fog in the early years. However, silica gel mask has a relatively long service life and is soft and comfortable. Wear for a long time, not easy to cause allergic reactions. However, silica gel materials also have different degrees of hardness and softness. Masks with high hardness are easy to cause facial indentation, while those with low hardness may not be worn firmly, which is prone to air leakage.
According to our understanding, the current market known as anti haze silicone mask and silicone mask products, in fact, only the part pasted on the face is made of silica gel material, and the main part is made of plastic, which is filtered by filter box or filter. Because silica gel products have good skin affinity, non-toxic, tasteless, soft and comfortable, not aging and hard, easy to clean, durable and not deformed, repeated use can still ensure good adhesion, sealing and other advantages.
However, if the filtering part of silicone rubber mask and silica gel mask does not achieve multi-layer filtering at the same time, the filter cotton is still used, such as synthetic fiber filter cotton, non-woven filter cotton, glass fiber filter cotton, activated carbon filter cotton, etc. one or more kinds of filter cotton are used, and one or more layers of filter cotton are used for air filtration, trying to prevent the new crown virus from damaging the human body, but the actual effect is the same It's far from perfect, so whether it's a silicone mask or a normal mask, it's an important problem or the filter element in the middle.
At present, most of the production methods of silica gel masks are mainly made of filter materials, filter channels, exhaust valves, silica gel face sealing masks and face sealing masks, which are all made of silica gel materials to prevent harmful gases from leaking into the masks. After special design, the filter channel of the transverse filter chamber is extended, PM2.5 micro dust is effectively filtered, and the harm of air to human body is reduced. The silica gel mask is selected because it can be used repeatedly and has a long service life. Only the filter cotton of the filter element in the middle part needs to be replaced. It is different from the ordinary mask in that it uses food grade environmental protection silica gel material, which is similar to the nipple and children's gum material, and soft Soft comfort is not harmful to the skin, and the silicone part can be disassembled after use, boiled and sterilized. It can be used repeatedly, and the contact surface with the skin is not worried about breeding bacteria!
Source: Guangzhou Tibo
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