The biohazard mask which is suited for one for national welfare

摘要

The case of emergency in order to protect both parties of the individual and public health, the biohazard mask for national welfare which includes bidirectional HEPA filtering. It is the overpressure cancellation valve which keeps the facial seal the case of thermal dispersion, sneeze and the with cloudiness prevention and the net suspension by the humidity cancellation valve of thing and the eye which separate installation and the eye volume where some expedients are devised in order to convert compatibility and wearing characteristic maximally, for example as for this the feeling by the gel seal are good from oral nose volume. The infiltration characteristic air filter promotes the humidity decrease around the mouth and the nose. In order to conform to telephonic communication or audio amusement, at the same time attractive it is combined stylish design promotes the fact that the wearing person keeps the mask the case of emergency. Selective figure Figure 1