How to choose the correct mask?
Experts said that in addition to providing effective protection, the wearing of masks must also take into account the comfort of the wearer and cannot bring about negative effects such as biological hazards. Generally speaking, the higher the protective performance of the mask, the greater the impact on comfort performance. When people wear masks to inhale, the masks have a certain resistance to the flow of air. When the inhalation resistance is too large, some people will feel dizzy, chest tightness and other uncomfortable conditions.
Different people have different industries and different physiques, so the requirements for the sealing, protection, comfort and adaptability of masks are also different. Some special populations, such as children, the elderly, people with respiratory diseases and cardiovascular diseases, should carefully choose the type of masks, on the premise of ensuring safety protection, to avoid accidents such as hypoxia and dizziness when wearing for a long time.
Taking ordinary medical masks as an example, for the convenience of wearing, ordinary medical masks generally adopt rubber band ears. The face of the mask has two sides, there are several layers of wrinkles on the face, and there is a hard strip on the side. When wearing it, the stiff side is first on top, because it can be used to pinch the bridge of the nose to ensure the tightness of the mask. Then the folds of the mask must be down, because if the folds are up, bacteria, viruses or dust will tend to stay in the folds.