| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an insect repellent ventilation filter capable of being very easily attached to/detached from a vent hole without impairing the ventilation capability. <P>SOLUTION: The insect repellent ventilation filter is formed in the shape of a disk (disk-shaped, oblong board-shaped, or polygonal board-shaped) having approximately the same size and contour as the opening area and contour of a target vent hole for attaching the filter, and is made of a flexible material configured into a net structure having a dimple 6b in the central area which is thinner t<SB POS="POST">2</SB>than the wall thickness t<SB POS="POST">1</SB>of a flange 6a formed in the outer peripheral side edge area. Specifically, a plastic net base material formed in the shape of a bottomed cylinder is wound and layered outward from an open end side to form a flange 9 in the outer peripheral side edge area, so that the bottom part of the net base material corresponds to the dimple 6b of the filter 6. By heating and fusing the central are, the tucked-in open end is fixed not to be unwound. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
