| 摘要 |
<p>The present invention relates to a filter type mask, which makes the thickness of a filter layer inserted into the mask thinner while ensuring superior dust protection effect, and reduces the risk of damage to the filter during usage and storage. To this end, a filter type mask comprises: a body which has an air passage formed inside by sealing of an inner sheet, which has first ventilation holes at the center, and of an outer sheet, which has second ventilation holes at the opposite sides, with the circumferential portions of the inner sheet and of outer sheet being engaged with each other; and a plurality of air filters which purify air moving in upward and downward directions through the air passage.</p> |
