| 摘要 |
The invention refers to a personal protective equipment for the respiration that is made up of an upper (1) and a lower (2) part characterized in that the two parts are both flat and exactly identical, are circle-shaped with a straight edge and a curved one, arc-shaped, and are linked together through the curved edge (3). The equipment can be re-positioned in a folded position for storage, while during the use, it creates an air-chamber, crescent shaped, over the nose and the mouth of the user, and the linear edges of the two parts are in contact with the face. The protective equipment of the invention, thanks to its small size, high comfort and high sealing along its perimeter, is particular effective in the applications where a high tightness is required for high protection level such as the use to protect against biological agents. |
