Air filter comprising a multilayer filter material

US10399027B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Katharina Merz · Stuttgart, DE
• Markus Michael · Ilsfeld, DE
• Birgit Renz · Erbach, DE

Key dates

• Filing date: Mar 18, 2016
• Grant date: Sep 3, 2019
• Expiry date: Aug 15, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2275/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A multi-layer filter material for an interior air filter element of an air conditioning system of a vehicle may include an active layer having a plurality of non-impregnated activated carbon particles, an impregnation layer having a plurality of impregnated activated carbon particles, and an ion exchange layer having a plurality of ion exchanger particles. The active layer may be arranged between the ion exchange layer and the impregnation layer. The active layer may further include a first ash content and the impregnation layer may further include a second ash content. The first ash content in the active layer may be less than the second ash content in the impregnation layer.