| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve usability of a filter and a mask by making the filter separate from a dustproof cloth of the mask, three-dimensional, and attachable to and detachable from the dustproof cloth. <P>SOLUTION: The filter 1 for the mask is formed into a hood shape by folding end parts of the right and left sides of a sheet 2 made of a non-woven fabric having flexibility, air permeability, and filterability of fine particles along a slit 4 formed at the side end part. The filter 1 is attached to and detached from the inner surface of the dustproof cloth covering the nose part and the mouth part of the sanitary mask. <P>COPYRIGHT: (C)2004,JPO |
