What characterizes viscous impingement filters?

Viscous impingement filters are specifically characterized by their design, which involves being coated with a sticky adhesive that captures airborne particles. This adhesive property allows particles to adhere to the surface of the filter as air flows through it, effectively removing contaminants from the airstream. This functionality is vital in applications where it is necessary to maintain a high level of air cleanliness, such as in HVAC systems or certain industrial environments.

The adhesive coating is what distinguishes these filters from others, as it enhances their ability to trap a wide variety of particulates, including dust and grease, making them particularly effective for certain filtration needs. The use of viscous impingement filters is not limited to filtration within specific temperature ranges, and they can be used in various environments depending on the adherent material's tolerance and the filter's overall design.