| 摘要 |
A mask (10, 10', 10'') for filtering dust and other particulates from air to be breathed by a person (14). The mask (10, 10', 10'') includes a compressible strip (30, 30', 30'') covered partially by a sealing material (32, 32', 32'') around the entire contact path between the mask (10, 10', 10'') and the person's face. The compressible strip (30, 30', 30'') provides for changes in the configuration of the face, while the impermeable material (32, 32', 32'') maintains a seal during all such changes. |
