1, Yiwu Angel Labor Insurance Products Co., Ltd.
Address: F2- 13844 storefront, Yiwu International Trade City, Jinhua City, Zhejiang Province. Huailu Bachelor's Labor Insurance Products Factory.
Address: No.3, China Commodity City 14630, Yiwu, Jinhua, Zhejiang. Yiwu Huixian labor insurance shop.
Address: A3-04b, Huangyuan Market, Yiwu China Commodity City, Jinhua, China. The introduction mask has a certain filtering effect on the air entering the lungs.
Respiratory infectious diseases
When it is popular, wearing a mask has a very good effect when working in a polluted environment such as dust.
China is the first country in the world to use masks. In ancient times, when people encountered pollution and dust, they only knew how to cover their nose and mouth with their hands or sleeves. For example, in "Li Shu", they cover their mouths for fear that the gas will touch people. "Mencius? Li Lou: If the house where Chinese characters are studied is not clean, everyone will ignore it.
It is very unsanitary to cover your nose with your hands or sleeves, and it is inconvenient to do other things. Later, some people covered their mouths and noses with a piece of silk.
Kyle. Poirot wrote in his book that Kyle? Polo's travels
",describes his experience of living in China for 17 years. One of them is: in the palaces of the Yuan Dynasty, people who offer food cover their noses and mouths with silk, so that they can breathe and don't touch food. This silk cloth covering the nose and mouth is also the original mask.
From the physiological structure of human body, because the blood circulation of nasal mucosa is very strong, the passage in nasal cavity is very tortuous, and nasal hair constitutes a filter barrier. When air is inhaled into the nostrils, the airflow forms a vortex in the tortuous channel, which warms the airflow inhaled into the nasal cavity. Experiments show that when cold air of minus 7 degrees Celsius is inhaled into the lungs through the nasal cavity, its airflow has been heated to 28.8 degrees Celsius, 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, so you can't wear a mask for a long time.
Masks can only be worn in special circumstances, such as crowded places with poor ventilation. Of course, you need to wear a mask when walking in the wild, in order to prevent wind, sand and cold, or to move in an environment with air pollution, but the time should not be too long. In addition, in the flu season, you should wear a mask when you go to public places where there may be a lot of pathogenic bacteria. Wearing a mask is only one of the ways to prevent respiratory infectious diseases, and the most important thing is to maintain good living habits.
Selection of masks: dust-proof efficiency of masks.
The dust blocking efficiency of the mask is based on its blocking efficiency for fine dust, especially for inhalable dust below 5 microns. Because dust with this particle size can directly enter alveoli, it has the greatest impact on human health. The general gauze mask, its dustproof principle is mechanical filtration, that is, when dust collides with gauze, some large particles of dust are blocked in the emery cloth through layers of barriers. However, some fine dust, especially dust smaller than 5 microns, will pass through the mesh of gauze and enter the respiratory system. At present, there are some dust masks abroad, and their filter materials are made of fibers with permanent static electricity. In the process of passing through this filter material, breathable dust less than 5 microns is attracted by static electricity and adsorbed on the filter material to capture fine dust, which really plays a role in dust prevention.
How close the mask is to the face.
Air is like water flow, where there is little resistance, it flows first. When the shape of the mask is not close to a person's face, dangerous substances in the air will leak into a closed place and enter the human respiratory tract. Well, even if you choose the mask with the best filter material. It can't guarantee your health. At present, many foreign laws and standards stipulate that workers should regularly test the air tightness of masks. The purpose is to ensure that workers choose suitable masks and wear them according to the correct steps.
Comfortable to wear
Require low respiratory resistance, light weight, hygienic wearing and convenient maintenance. In this way, workers will be willing to wear them in the workplace and improve work efficiency.
. At present, foreign maintenance-free masks do not need to be cleaned or replaced, and they are discarded when the dust resistance is saturated or the mask is damaged, which not only ensures the hygiene of the mask, but also saves the time and energy for workers to maintain the mask. Moreover, many masks are arched, which can not only ensure a good fit with the face, but also reserve a certain space at the nose and mouth, making them comfortable to wear.
Dust prevention efficiency of mask
The dust blocking efficiency of the mask is based on its blocking efficiency for fine dust, especially for inhalable dust below 5 microns. Because dust with this particle size can directly enter alveoli, it has the greatest impact on human health. The general gauze mask, its dustproof principle is mechanical filtration, that is, when dust collides with gauze, some large particles of dust are blocked in the emery cloth through layers of barriers. However, some fine dust, especially dust smaller than 5 microns, will pass through the mesh of gauze and enter the respiratory system. At present, there are some dust masks abroad, and their filter materials are made of fibers with permanent static electricity. In the process of passing through this filter material, breathable dust less than 5 microns is attracted by static electricity and adsorbed on the filter material to capture fine dust, which really plays a role in dust prevention.
How close the mask is to the face.
Air is like water flow, where there is little resistance, it flows first. When the shape of the mask is not close to a person's face, dangerous substances in the air will leak into a closed place and enter the human respiratory tract. Well, even if you choose the mask with the best filter material. It can't guarantee your health. At present, many foreign laws and standards stipulate that workers should regularly test the air tightness of masks. The purpose is to ensure that workers choose suitable masks and wear them according to the correct steps.
Comfortable wearing requires low respiratory resistance, light weight, hygienic wearing and convenient maintenance. In this way, workers will be willing to wear them in the workplace and improve work efficiency. At present, foreign maintenance-free masks do not need to be cleaned or replaced, and they are discarded when the dust resistance is saturated or the mask is damaged, which not only ensures the hygiene of the mask, but also saves the time and energy for workers to maintain the mask. Moreover, many masks are arched, which can not only ensure a good fit with the face, but also reserve a certain space at the nose and mouth, making them comfortable to wear. Of course there are other suggestions.