Nonwovens / Technical Textiles


Ahlstrom introduces a new dual-layer filtration technology for longer lifetime and reduced size of air intake filters

The quality of air intake is a substantial factor in the overall performance of today’s engines. An efficient air intake filtration supports optimal operation, preventing particulate contaminants from entering the engine while optimizing fuel consumption and reducing engine wear. In this context, a longer filter lifetime is a key benefit as it ensures continuous removal of contaminants while extending service intervals and minimizing environmental impact.

Ahlstrom introduces a new dual-layer filter media technology, available globally, that represents a leap forward in filtration and is a perfect solution to comply with future market needs. The dual-layer design offers up to double dust holding capacity compared to the single-layer design, as each layer serves a distinct purpose to optimize the overall retention of particles in the depth of the material. 

In automotive engine air intake applications, the technology has proven to extend by over 50% the filter lifetime in the same configuration. It also offers the possibility to reduce both size and weight of the filter element in vehicles where these parameters are important. 

Dual-layer filter materials are designed to comply with current and future engine air intake specifications, including fuel cells. The media can be customized with flame retardancy properties to increase safety in use without compromising performance. The technology is highly adaptable and can be extended to filter air and liquid in many other transportation and industrial applications. 

“Leveraging our advanced manufacturing processes and know-how, Ahlstrom’s dual-layer filter media are setting new standards for filtration performance on the market,” says Tamara Quatrano, VP of R&D and Product Development for the Filtration division. “They can be adapted to different environments, and they not only purify and protect but also contribute to a more sustainable future,” she continues.

© 2024

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