| 摘要 |
<p>There is provided a mask including a front panels section having an outward curved surface. The mask includes a 2-intersecting front panels section having upper and lower flaps divided foldably by a reference line, each of the flaps having a width decreasing from a center to both ends along the reference line in a longitudinal direction thereof so that the front panels section has a curved surface in a fully extended position; an upper panel having an upper first edge connected along a longitudinal direction thereof to an upper edge of the front panels section to define an upper connection line therebetween, and a free, upper second edge opposite to the upper first edge, the upper panel being foldable onto an inner face of the upper flap about the upper connection line; and a lower panel having a lower first edge connected along a longitudinal direction thereof to a lower edge of the front panels section to define a lower connection line therebetween, and a free, lower second edge opposite to the lower first edge, the lower panel being foldable onto an inner face of the lower flap about the lower connection line. The mask may be useful to improve user's wearing feeling and facilitate easy portability.</p> |
