Patent · US Active

Filter medium, filter element and use thereof and filter arrangement

US11795593B2 · kind B2 · utility

0Cited by

4References

29Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Stefan Orendt · Mainleus, DE
Thomas Pemsel · Ludwigsburg, DE

Key dates

Filing date	Sep 27, 2019
Grant date	Oct 24, 2023
Priority date	—
Expiry date	Mar 1, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2239/0627
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter medium (10) for filtering a fluid, in particular for use in an interior air filter (32), comprises a spun-bonded nonwoven formed at least in part of multi-component segmented pie fibers (1) having at least a first plastic component (2) and a second plastic component (3). The multi-component fibers (1) are largely non-split, and in order to manufacture same, segmented pie filaments are spun in a spun-bonding process (S4) to form a spun-bonded nonwoven (10). The segmented pie filaments then form the multi-component fibers (4), the first plastic component (2) and/or the second plastic component (3) being made in particular of a polypropylene.

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