Mask filters, mask sheets

Abstract

This product is a mask filter (or mask sheet) that is inserted into the pocket of a sanitary mask or between the sanitary mask and the face. This product blocks particulate matter in the air more effectively, allowing the user to breathe cleaner air, and is made up of multiple filter sheets of the same shape stacked on top of each other. Multiple sheets are bundled together, and the edges are crimped once around the edges in a dotted line shape as shown in the front view to form a single unit. Four vertical lines are crimped vertically in the plan view. The user can select one of the four vertical lines on each side and cut a little outside the selected vertical line with scissors or the like to adjust the size appropriately for the user's own use. These crimped vertical lines prevent foreign matter from entering the stacked filters from the cut surface even when the filter is cut.

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