In the face of the new coronavirus epidemic, masks have become a hot-selling product and a must-have item! It has also become a hot search term on major e-commerce platforms. People are rushing to grab masks… Will masks really be out of stock? In fact, its production is measured in seconds.
The cost of disposable masks is very low and can be produced on a very large scale with fully automatic mechanization. Especially in the world factory, which has the most complete industrial system in the world and the largest production capacity in the world, there is no need to worry about the supply of anti-virus equipment.
How are masks produced?
The current automatic production line uses rolls of non-woven fabric to automatically cut into the shape of the mask, automatically laminate and then automatically weld the ear straps, and package the finished product after disinfection and other procedures. The whole process They are all fully automated and can produce one or two per second. Multiple production lines can produce them at the speed of bullets coming out of the chamber.
▲ Materials in rolls
▲Earband
▲Welded ear straps
▲Cutting and shaping
▲The finished product is released
What is the N95 mask that everyone is seeking?
N95 is not a specific product name, but a standard. Products that have passed the review of the National Institute for Occupational Safety and Health (NIOSH) can be called “N95 masks.” “N” means not resistant to oil, and “95” means that when exposed to a specified number of special test particles, the particle concentration inside the mask is more than 95% lower than the particle concentration outside the mask. The protection level of N95 means that under the testing conditions specified by NIOSH standards, the filter material of the mask has a filtration efficiency of 95% against non-oily particles (such as dust, acid mist, paint mist, microorganisms, etc.). The N95 mask is one of the nine types of particle protective masks certified by NIOSH.
Generally speaking, N95 masks have the same protective effect as KN95 masks. The difference is that KN complies with Chinese standards and N complies with American standards. In China, KN95 refers to a filtration efficiency greater than 95% for non-oily particles above 0.075 microns. According to NIOSH standards, N95 has a 95% blocking success rate for particles with a diameter of 0.075 microns. Because the diameter of the coronavirus pneumonia (SARS) virus is about 0.1 to 0.12 microns, wearing an N95 or KN95 mask is a feasible prevention method.
In addition, medical surgical masks can also be used to protect against infectious diseases. Medical surgical masks can block 70% of bacteria, while N95 masks can block 95% of bacteria, and the latter has a stronger blocking effect. However, paper masks, activated carbon masks, cotton masks and sponge masks have limited effectiveness in preventing infection because the materials are not tight enough.
How long should the mask be worn at a time?
It is very important to wear medical protective masks, otherwise even if you purchase the correct mask, wearing it incorrectly will affect the filtering effect.
Liang Jiansheng, director of the Disinfection and Vector Biological Control Institute of Wuhan Center for Disease Control and Prevention, introduced the specific wearing steps as follows:
1. Hold the protective mask with one hand, with the side with the nose clip facing away;
2. Cover the nose, mouth and chin with the protective mask, with the nose clip facing upwards Face;
3. Use the other hand to pull the lower frenulum over the head and place it on the back of the neck under the ears;
4. Then pull the upper strap to the middle of the head;
5. Place the fingertips of both hands on the metal nose clip, starting from the middle position, and press the nose inward with your fingers clip, and move and press it to both sides to shape the nose clip according to the shape of the bridge of the nose.
The correct way to wear N95 masks
Director Liang Jiansheng’s reminder If citizens go to public places and do not come into contact with patients, it is enough to wear a surgical mask and there is no need to over-protect. However, if they will come into contact with patients, they must wear a bioproof N95 mask.
N95 masks are highly protective, but they will feel stuffy after being worn for a long time. Wang Yuedan, professor of immunology at Peking University School of Basic Medicine, reminded that when wearing N95 masks, the time should not exceed 4 hours at a time. If N95 masks are used continuously for a long time, it will cause lung damage and may cause problems such as emphysema.
Zong Zhiyong and Wang Yantong, experts from the Infection Management Department of West China Hospital of Sichuan University, recommend not to wear N95 masks for children under 7 years old, even if they are designed with special air valves N95 masks, because the breathing resistance is too great, there is a risk of suffocation for children.
Can masks be used repeatedly?
Experts Zong Zhiyong and Wang Yantong made it clear: “No, no matter what kind of mask, it has a use period. Disposable medical masks…It is recommended to replace it every 4 hours; the recommended use time limit for medical protective masks is 6 to 8 hours. ”
What to do with the mask after use?
When the N95 mask is While purchasing and using masks in large quantities, how to dispose of used masks has become a new problem in controlling the spread of pneumonia.
In hospitals, medical waste is generally divided into three colors: black, yellow and red. . Among them, black plastic bags contain domestic waste, yellow plastic bags contain medical waste (including infectious waste), and red plastic bags contain radioactive waste and other special medical waste. After use, the masks will be put into clean, airtight bags. Throw it into the yellow trash can.
“Judging from the current situation, ordinary citizens cannot tell whether they have been exposed to the new coronavirus when they go out. According to the principle of caution and from the perspective of maximizing the protection of public life and health, it is recommended to place used masks separately in sealed bags such as plastic bags. In cities such as Shanghai that implement garbage classification, put sealed bags into “hazardous garbage” bins. ” Du Huanzheng, a professor at the School of Environment and Sustainable Development of Tongji University, said as quoted by Science and Technology Daily.
In some cities that do not have stricter regulations on garbage classification and disposal, Weihai Haida Hospital intervened in vascular Tao Xiaoqing, director of the department, suggested that mask waste at home should be placed in bags to avoid secondary contamination.
Because high temperature and medical 75% alcohol can kill the new coronavirus, it is recommended to use alcohol After spray disinfection, seal it in a bag and discard it.
The Ministry of Ecology and Environment issued the “On Preparing the Medical Waste Environment for the Pneumonia Epidemic of New Coronavirus Infection” on January 21, 2020 “Notice on the Management of Pneumonia Epidemic”, deploying various localities to dispose of pneumonia epidemic medical waste in a timely, orderly, efficient and harmless manner, requiring local ecological environment departments at all levels to attach great importance to the environmental management of pneumonia epidemic medical waste, and effectively do a good job in the collection, transportation, and management of medical waste. Supervision and management of environmental pollution prevention and control during storage and disposal activities.
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