How does that work? Through the use of a very special filter layer.
Common cabin filters include a particulate filter and frequently also an activated carbon layer. This is also true for the cabin filters from MANN+HUMMEL. The particulate filter layer almost completely separates coarse particles such as dust, pollen and tire debris as well as the smallest, respirable particles such as particulate matter. The layer of activated carbon adsorbs harmful gases, unpleasant odors and ozone almost completely from the air flowing through the system.
But these cabin filters also have a third layer with a special biofunctional coating made from so-called polyphenols. Polyphenols are natural products with an anti-inflammatory effect and are perceived to promote good health. They are present in plants such as green tea and pomegranates and many others and have the ability to adsorb allergens and make them harmless. This mechanism is exploited by MANN+HUMMEL.