The filter cloth used in medical masks mainly adsorbs bacteria and viruses and blocks pathogens. The dense filter layer uses N95 filter material to filter out particles and effectively block flying wipes, blood, body fluids and secretions.
The headband of a medical mask is two long straps that pass through the holes on both sides of the mask. The nose is clamped in the center of the upper part of the filter layer and placed between the dense layer and the filter layer. The material is metal or metal-plastic composite, which has both plasticity and certain strength, which is convenient for nose sealing when wearing.
It can be said that medical masks are protective equipment to ensure mutual infection between medical staff and patients. Therefore, they must be manufactured in accordance with national requirements to achieve a bacterial filtration efficiency of more than 95%. This is an important role of medical masks.
How to choose qualified and applicable medical masks? Purchasing personnel, issuing personnel and medical personnel using medical masks at all levels and types of hospitals should know the relevant knowledge of medical masks in order to correctly select and use medical masks.