Patent · US Active

Filter material

US9592465B2 · kind B2 · utility

0Cited by

21References

19Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Ralf Disson · Leutenbach, DE
Bernd Neubauer · Welzheim, DE
Birgit Renz · Erbach, DE
Markus Steppe · Malmsheim, DE

Key dates

Filing date	Nov 8, 2012
Grant date	Mar 14, 2017
Priority date	—
Expiry date	May 20, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2275/305
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter material for an air filter may include a substrate layer on an inflow side and a fine-fiber layer on an outflow side relative to a flow direction. The filter material may include a connection region arranged between the substrate layer and the fine-fiber layer. The substrate layer, connection region and fine-fiber layer may include pores having an aggregate degressive pore size with respect to the flow direction. A combined thickness of the substrate layer, connection region and fine-fiber layer may be at least 0.35 mm. The substrate layer may include a cellulose material and have an impregnation of resin disposed along the inflow side. The resin may amount to approximately 22% by mass of the substrate layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.