Patent · US Active

Filter element and method for producing a filter element

US9669341B2 · kind B2 · utility

1Cited by

6References

33Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Tanja Majer · Bietigheim-Bissingen, DE
Gerhard Vilsmaier · Unterdietfurt, DE

Key dates

Filing date	Jul 28, 2014
Grant date	Jun 6, 2017
Priority date	—
Expiry date	Oct 9, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2037/1269
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter element has a filter body of at least one layer of a flat web-shaped filter medium, separating a raw side from a clean side of the filter element. A hot melt system is provided and the filter body is glued together by the hot melt system. The hot melt system has a hot melt mixture that is made up of 15-85% by weight of a first hot melt that is polyester-based and 15-85% by weight of a second hot melt that is polyamide-based. The first hot melt and the second hot melt together amount to 100% by weight of the hot melt mixture. The hot melt mixture constitutes a proportion of more than 75% by weight of the hot melt system. The remainder of the hot melt system is made up of fillers, pigments, tackiness-imparting resins, and hot melts based on a polycondensate.

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