| 摘要 |
PURPOSE: A mask fixed by mouth is provided to prevent hepatitis caused by various viruses by easily wearing in a place where people are collected. CONSTITUTION: A mask fixed by mouth includes: a nose-like molding unit(20) as a molding mask frame unit(10), which is molded according the face line at a noise position that is an essential part which has to be covered by the mask; and a protrusion unit(30) protruding toward oral cavity.
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