Back to results
US 2026/0233137 A1Published application
Filter medium, method of producing filter medium, and filter element
AssigneeMann+Hummel GmbH
InventorsMatthias STARZER, Roland SIEBENGARTNER, Christoph KRAUTNER
Life of this patent
Estimating the term…
Abstract
A filter medium includes a pre-filter layer made of staple fibers and a microfiber layer adhered to the pre-filter layer. The thickness of an adhesion interface is limited to a maximum of 30% of the total thickness of the pre-filter layer and the microfiber layer. Additionally, a method of producing the filter medium includes the filter medium and a filter element for filtration of cabin air incorporates the filter medium.
Claims14
A filter medium comprising:
- a pre-filter layer comprising staple fibers, wherein the staple fibers are thermally bonded together;
- and
- a microfiber layer adhered to the pre-filter layer,
- wherein the thickness of an adhesion interface is at most 30% of the thickness of the pre-filter layer and the microfiber layer.
1 more element
A method of producing a filter medium, the method comprising:
- providing a pre-filter layer comprising staple fibers, wherein the staple fibers are thermally bonded together;
- providing a microfiber layer adhered to the pre-filter layer, wherein a thickness of an adhesion interface is at most 30% of a thickness of the pre-filter layer and the microfiber layer.
Dependencies are inferred from the claim text.