Why pe fibre reinforced layflat hose more popular than PVC layflat hose?
KN95 and N95 masks are two types of masks that people often use, but do they really work? As a professional medical product manufacturer, I will introduce it to everyone.
How KN95 / N95 masks anti virus?
Viruses usually do not exist alone in the air, but instead adhere to particles such as droplets, dust, and dander. The filtering mechanism of KN95 and N95 masks is to block these fine particles through the high-performance filter layer in the mask to build a Protective barrier.
When wearing KN95 / N95 respirator self-priming filter anti-particulate respirator masks, pay attention to tightness, and should be close to the face. Never leave a “door of convenience” for viruses and bacteria. Exhalation valve type mask.
What are the protective effects of KN95 / N95 masks with breathing valves?
KN95 / N95 masks are also divided into breathing valve and non-breathing valve. For masks, air permeability and filtering effect are always a contradiction. If the filtering effect is good, they tend to feel more breathless. Breathing valves are designed to relieve radon.
The exhalation valve and the inhalation valve are a mechanical switch. They are closed during inhalation, and the valve is opened during exhalation, and the air is “screened” through the filter layer. The valve is opened during exhalation to reduce the sense of resistance. The problem is that people don’t know if this mechanical switch will suddenly break when worn, or will be caught by fine particles, so that the air that has not passed through the filter layer will carry harmful particles while entering. Therefore, medical type masks have no breathing valve. At the same time, we also call on the ordinary people to choose KN95 / N95 masks or medical surgical masks without breathing valves as much as possible during the epidemic prevention period, especially when the surrounding environment is harsh.