Patent · US Expired

Method of producing a filter insert

US5622583A · kind A · utility

27Cited by

7References

10Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Volker Ernst · Sachsenheim, DE
Arthur Klotz · Willow Grove, US
Michael Kolmeder · Dingolfing, DE
Bernhard Wimmer · Hersbruck, DE

Key dates

Filing date	Aug 29, 1994
Grant date	Apr 22, 1997
Priority date	—
Expiry date	Aug 29, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T156/1798
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter insert and a method for producing the same in which the filter insert has an accordion-folded filter medium. In a first operating step, folded edges are impressed on the filter medium. Subsequently, by glue application devices which are provided with glue application nozzles, at least two glue beads are applied to the surface of the filter medium and the folding is carried out subsequently. At least one of the glue application devices is movable transversely to the transport direction of the filter medium.

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