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1. Ultrasonic welding roller: the client is required to provide mask drawings, including the pattern drawing when the mask is not folded and the mask appearance drawing after folding; 2. Printing pattern: the customer is required to provide the plane drawing of the pattern, including the total size of the pattern (length x width), the size and font of each line of the pattern. Font color, etc. 3. Ear strap welding: The customer shall provide the location map of ear strap welding on the mask. The error is + / - 1 mm After the outbreak, masks were snapped up by the public in China, and it was even hard to find a cover in major drugstores. Many citizens did not buy masks and went abroad to buy them. For example, KF94 masks belong to South Korea, but can kF94 masks prevent viruses now? Found! Since there is no medical standard for KF94, there is no standard for bacterial filtration rate during production. In addition, the external materials are the same as non-medical KN95 and N95 masks. Splash proof properties are not as good as medical properties. Once infected with droplets, there is still a risk if the mask is not changed for a long time. So now, these masks can be used to keep people from going outside, but they don't really prevent the virus. KF94 is the protection grade of the protective mask in South Korea, that is, the filtration rate of particles with a diameter of 0.4 meters is greater than 94%. As a PERSONAL protective device against novel Coronirus infection, KF94 mask is slightly inferior to KN95 and N95 mask. If you can't buy a better mask, you can choose KF94. After all, it is also suitable for ordinary people to wear! KF94 masks he an erage diameter of 0.4 meters and a filtration rate of more than 94 percent, which is the standard in South Korea. KF94 masks he a slightly lower standard than N95, but can also prevent airborne droplets from spreading the virus. What does Kf94 mask mean KF94 masks are manufactured to the standards of the Korea Food and Drug Administration. KF94 is a mask that filters more than 94% of particles with an erage diameter of 0.4 meters. All respirators and disposable masks in China he been sold out, as he popular N95 and KN95 masks. So, people began to pursue the mask of KF94. The N95 mask has a diameter of 0.3 meters and can filter more than 95 percent of non-oily particles. These masks are made to American standards. Compared with N95 mask, KF94 has slightly lower filtration diameter and filtration rate. However, KF94 standard can still filter out the virus brought by droplets in the air, playing a preventive role against new viral pneumonia. Although KF94's standard is slightly lower than N95, it can also provide protection. KF94's price is lower than N95. A mask automatic folding machine, folding products used in the production of mask production line fully automatic machine, using ultrasonic technology, will be 3 ~ 5 layer polypropylene nonwoven fabric and melt - blown fabrics, activated carbon and filtration material welding, non-woven fabrics, ears and welding, folded in half, sealing side, integration of automatic slitting line fold masks, N95, KF94 (not South Korea KF94 fish) and other fold masks. With N95 construction, aluminum frame and sheet metal doors are self-improving, with tag and offset mechanism removed. Depending on the raw materials used, masks can meet different standards, such as FFP1, FFP2, N95, etc. No manual operation is required. All masks are mechanized. The drawings are for reference only The frequency of replacement of KF94 masks depends on the situation and cannot be generalized. The use time is related to the environment used, different particle concentration, properties, storage methods, personal habits and other factors. Look first at KF94 mask, mask of different countries and regions he different for each index in the standard data, usually N/R/P series is American standard, KN/KP series is the Chinese standard (GB2626) FFP series is the European standard, filtering and KF Korea shorthand, KF series standard is South Korea food and drug administration issued the mainstream standards of the mask. The KF series is divided into KF80, KF94 and KF99. KF94 mask has a filtering efficiency of 94%, that is, it can filter out 94% of particles with a diameter of 0.4 meters at least, and oil and non-oil particles reach the same level. Non-oil particles include dust, paint and microorganisms. Therefore, the mask has a certain isolation effect on viruses. Theoretically, the KF94 mask could be REUS