| 摘要 |
PURPOSE: A nose filter using a check valve is provided to improve wearing feeling by reducing foreign sensation and inconvenience. CONSTITUTION: A nose filter using a check valve is constituted as follows. In the check valve, a film is adhered to the inner lower part of a cylindrical body(10) and is supported. In the upper part of the check valve, the film moves outside and air is discharged. When the air is not discharged, the film is adhered to a sealing jaw and prevents water from flowing in the nose.
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