Popular Science: Disposable Medical Masks ≠ surgical mask, Wearing the Wrong One Is Risky, You Must Be Careful _ Protect

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Original title: Popular Science: Disposable Medical Masks ≠ surgical mask, Wearing the Wrong One Is Risky, We Must Be

Original title: Popular Science: Disposable Medical Masks ≠ surgical mask, Wearing the Wrong One Is Risky, We Must Be Cautious Since our company Bo Pfizer entered the production of epidemic prevention materials, we have received many calls about the consultation and ordering of masks. However, we find that people are generally confused about the concepts of surgical mask and disposable medical masks, and even think that they are the same. The names are similar, but the protective performance is essentially different. Today, Xiaobian will give you the main differences between the two. [Difference between medical surgical mask and disposable medical mask] First, different standards The medical surgical mask meets the requirements of the medical standard of YY 0469-2011 Medical Surgical Mask, and the disposable medical mask meets the requirements of YY/T 0969-2013 Disposable Medical Mask. When you buy a mask, you can find the standard information on the outer package. As long as it is YY 0469-2011, it is a medical surgical mask, and YY/T 0969-2013 is a disposable medical mask. Expand the full text The picture shows the medical surgical mask produced by Bo Hui Rui Jin, which meets the requirements of YY 0469-2011 Medical Surgical Mask. 2. Different manufacturing processes The medical surgical mask is divided into three layers, an inner water absorption layer, a middle filter layer and an outer waterproof layer. The inner layer is a skin-friendly moisture absorption layer (generally spunbond non-woven fabric, mainly used for moisture absorption), the middle layer is an isolation filter layer (generally melt-blown fabric with electret treatment, mainly used for blocking bacteria, viruses and fine particles), and the outer layer is a spunbond water repellent layer (generally spunbond non-woven fabric, used for blocking droplets). It should be noted that the melt-blown fabric with electret treatment in the middle layer is commonly known as the "heart" of the mask. When the droplets containing the virus are close to the melt-blown fabric,Full Body Disposable Coverall, the droplets will be blocked, and the virus will be electrostatically adsorbed on the surface of the fiber, unable to pass through, which can play a role in blocking the spread of the virus. However, we also found that some disposable medical masks are limited by the qualification of the manufacturer, the supply of raw materials for melt-blown cloth, the price, the production process and other factors. Many non-compliant disposable medical masks use poor quality melt-blown cloth or do not have an intermediate melt-blown fabric isolation layer, which has poor or no barrier effect on viruses and can not guarantee the safety of the wearer. 3. Different protective performance In the standards of surgical mask and disposable medical masks, the efficiency of bacterial filtration is required to be more than 95%, that is to say, Antivirus Disposable Mask with CE Certificate ,Virus Prevention Mask 3 Ply with Earloop, both kinds of masks can clearly block bacteria. However, there is a significant difference that the filtration efficiency of surgical mask to non-oily particles with a diameter of 0.3 μm is more than 30%, and the fluid resistance to splashes (droplets) of blood and body fluids reaches 120 mmHg, but there is no requirement for disposable medical masks. This shows that besides isolating bacteria, surgical mask can also isolate blood, body fluid splashes and non-oily particles, while the isolation effect of disposable medical masks on blood, body fluid splashes and non-oily particles is unknown. After electret treatment, the melt-blown fabric in the middle layer of the surgical mask plays a role of electrostatic adsorption barrier for viruses.However, the melt-blown fabric in the middle layer of the disposable medical mask has poor quality or no melt-blown layer, and some of them have not been treated by electret treatment, which has poor barrier effect for viruses. 4. Different occasions of use Surgical mask, it can be used for high-level protection of medical staff in medical clinics and wards. Disposable medical masks can only be used as ordinary level of protection, if it is a disposable medical mask without melt-blown cloth, it basically has no anti-virus effect. According to the recommendations of the Chinese Center for Disease Control and Prevention: medical staff in general outpatient clinics and wards; staff in crowded places, including hospitals, airports, railway stations, subways, ground buses, airplanes, trains, supermarkets, restaurants and other relatively sealed places; staff engaged in administrative management, police, security, express delivery and other employees related to the epidemic situation; Home-based quarantine and those living with them are recommended to wear surgical mask. The picture shows that the Chinese Center for Disease Control and Prevention recommends people to wear surgical mask. With the resumption of work and production of enterprises and institutions around the country and the resumption of classes of students, it ushered in the biggest wave of return and rework peak since the epidemic. Personnel gathering is inevitable, and protective measures become the key. We recommend that you wear surgical mask with better protection effect, because you can not detect whether there is a "potential source of virus infection" around you. Compared with disposable medical masks with lower protection level, surgical mask are more suitable for enterprises, institutions, schools, stations and other places with dense flow of people, and have better protection effect. In the special period, we should choose surgical mask that meet the national standards,Against Bacteria Breathable KN95 Face Mask, do a good job of self-protection, wait for the epidemic to pass, and spring blossoms. Return to Sohu to see more Responsible Editor:. zjyuan-group.com