Firma Carl Freudenberg

Jorgen Knudsen

Udo Michaelis

Ulrich Schlor

Andreas Brandhofer

Thomas Schroth

Margit Hofmann

Hans-Joachim Lippold

Dieter Linse

Wolfgang Schmidt

Matthias Schuster

A method for manufacturing a filter cartridge that has a filter medium, which, on the circumferential side, is surrounded with clearance by a gasket-seal. The method provides for a frame to be arranged in the gap formed by the clearance, and sealingly bonded to the edges of the filter medium and the gasket-seal.

Method for the manufacture of a filter cartridge

An accordion filter insert has a frame formed about the filter material. The frame has an elastically deformable sealing lip on the periphery of the frame. The elastically deformable sealing lip is formed of the same material as the frame itself. The sealing lip and frame are formed as a unitary piece.

Accordion filter insert having an elastic sealing lip unitary with a

A cartridge filter has a filter element and a frame formed of plates. The plates are installable around the filter element and are interconnectable in the area of the sides of the plates. The plates have plug-in connection members which interact with corresponding plug-in connection members of adjacent plates to thereby affix the plates to one another.

Cartridge filter with frame

A filter cartridge has a filter medium, which, on the circumferential side, is surrounded with clearance by a gasket-seal. A frame is arranged in the gap formed by the clearance, and is sealingly bonded to the edges of the filter medium and the gasket-seal.

Filter cartridge and a method for its manufacture

A filter cartridge has a frame made of tough material, which sealingly surrounds an accordion fold pack on its circumferential side. The frame is made of assemblable, plate-shaped frame elements and has, on the circumferential side along the lower and/or upper edge of the frame, a tongue, the tongue being insertable in a latticed holder having a U-shaped profile. A viscous joining compound is used to affix the tongue in place. The tongue is formed by strip-shaped tongue elements, each tongue element being joined to a frame element, wherein the adjacent ends of the tongue elements are sealingly fastened to each other by connecting corner pieces.

Filter cartridge

A filter insert. The filter insert includes an accordion fold pack that is made of a filter material and is joined to a filter frame. The material of the filter frame is injected in a flowable state into the folds of the accordion fold pack which are open in the on-coming flow direction of the medium to be filtered. The material is subsequently hardened during automatic claw fixation with the fold walls. The entire peripheral edge of the accordion fold pack sealingly overlaps the outer boundary surfaces of the filter frame, and is designed as a sealing device.

Filter insert

A method for manufacturing a filter insert, and the filter insert so manufactured. The filter insert includes an accordion fold pack that is made of a filter material and is joined to a filter frame. The material of the filter frame is injected in a flowable state into the folds of the accordion fold pack which are open in the on-coming flow direction of the medium to be filtered. The material is subsequently hardened during automatic claw fixation with the fold walls. The entire peripheral edge of the accordion fold pack sealingly overlaps the outer boundary surfaces of the filter frame, and is designed as a sealing device.

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Angelbachtal, Germany

Jorgen Knudsen