| 摘要 |
A pleated filter is provided with electrically conductive fibrous material that releases ions to improve trapping efficiency. The edges of folded filte r media are rendered emitting as by attaching conductive strings to the edges of the folds. The ends of the fibers in the strings are left exposed and, by applying high voltage on these strings, ions may be produced which charge du st particles to improve the filter's efficiency. Alternately, the pleated mediu m itself provides ion-emitting fiber ends along folded edges that have been rendered conductive.
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