| 摘要 |
<p>The filter has bars (1) running normal to a filter surface, and profiles (4) including a curved or bent cross-section. The bars include slots (3) at one side facing away from an upper side of the filter. The profiles include counter slots (8) at another side facing toward the upper side. The bars and the profiles are fit into each other by the slots and the counter slots. Strips (2) run along upper edges (7) of the bars, where the edges face toward the upper side. Width of each strip is larger than thickness (D) of each bar. The bars and/or the strips are welded with the profiles. The filter is coated with plastic.</p> |
