The tension belt and the mask face make up the medical mask. The mask face has three layers: the inner layer is made of a material that is gentle on the skin, the middle layer acts as an isolation filter, and the outer layer is a special antibacterial material. This medical mask is highly efficient, as it is both hydrophobic and breathable. It effectively filters out tiny virus-carrying aerosols and harmful dust particles. Overall, it provides excellent filtration while being non-toxic, harmless, and comfortable to wear.
2 types:
There are various types of masks available in the medical field. These include disposable non-woven masks, gauze masks, and special anti-virus masks. Each serves a specific purpose and is utilized depending on the medical situation at hand. So, it is crucial to understand the differences between them and select the appropriate mask accordingly.
Non-woven masks that are disposable and consist of more than three layers are effective in protecting against bacteria and dust. Due to their disposable nature, they are a safe and reliable option with no risk of secondary infection.
Gauze masks find extensive usage in medical care and scientific research, making them the preferred choice among various mask types.
The central component of anti-virus masks comprises a filter layer, typically composed of either activated carbon felt or meltblown cloth. These materials possess exceptional properties that enhance the mask's functionality by effectively sterilizing and eliminating harmful microorganisms.
Next, let's examine the performance characteristics and scope of application. It is important to rearrange the above content while ensuring that the generated content is still aligned with the original text information. Please note that the generated content will be different from that produced by ChapGPT, as it will be based on a language model.
1. Medical protective masks
(1) The filtration efficiency of sodium chloride aerosol, with an aerodynamic median diameter of (0.24±0.06) μm, is not less than 95% when tested with an air flow of (85±2) L/min. This level of efficiency meets the requirements of N95 (or FFP2) and exceeds them.
The inhalation resistance remains below 343.2Pa (35mmH2O) throughout the specified flow conditions.