| 摘要 |
PURPOSE: An air filter is provided, which is an air filter exhibits effects of sterilizing, anti-bacteria, deodorizing, and electromagnetic wave shield caused by copper powder as well as effects of elvan. CONSTITUTION: The air filter is characterized in that elvan powder with a particle size distribution of 100 to 350 μm is applied on either one or both sides of synthetic non woven fabric with a density of 50 to 200 g/m¬2, wherein the elvan powder contains copper powder by 10 to 50 wt.% and binder powder for strong adhesion.
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