Mann+hummel Gmbh

Anton Kreiner

Martin Klein

Lars Spelter

Frank Bartel

Jobst Eisengraeber-Pabst

Pamela Gohl

Bjoern Schmid

Armando Labarta

Nico Behrendt

Markus Weindl

Jens Neumann

Christian Zisslsberger

Fabian Wagner

Michael Fasold

Ulrich Dehnen

Andreas Franz

Stefan Walz

Josef Rohrmeier

Michael Maier

Kathrin Lichtenwalter

Thomas Grein

Christopher Marc Sturgess

Frank Pflüger

Marius Panzer

Heiko Brosi

Florentin Van Uffelen

Margarete Drexler

Helmut Brenneis

Johannes Grad

Sylvia Beier-Moys

Maximilian Steinbrunner

Joachim Stinzendörfer

Jobst EISENGRÄBER-Pabst

In a method for producing a filter medium, at least one substrate layer of a nonwoven comprising cellulose fibers and/or synthetic polymer fibers is provided and a fiber layer of polymer fibers is deposited on the at least one substrate layer. Prior to depositing the fiber layer, a solvent is applied to the at least one substrate layer, wherein a material of the substrate layer and/or a material of the fiber layer is soluble in the solvent. A filter medium produced by the method has material-fused connections at crossing points of the polymer fibers and/or cellulose fibers of the substrate layer with the polymer fibers of the fiber layer.

Method for producing a filter medium, and a filter medium

A filter element for filtering liquids has a folded filter medium with outer fold edges and inner fold edges, wherein the inner and outer fold edges extend along a longitudinal axis of the filter element. A support body is provided with a first support body section and a second support body section, wherein the first support body section is facing the inner fold edges and hugs closely an envelope of the inner fold edges. An envelope of the outer fold edges and the second support body section hug closely at least sectionwise an outer circumferential surface of the filter element.

Filter element and filter arrangement

A filter element for filtering a fluid is provided with a filter bellows made of a filter medium folded along fold edges in a zigzag shape to form folds, wherein the folds extend between oppositely positioned end face edges of the filter bellows. The filter bellows defines a raw side and a clean side of the filter element, wherein a fluid to be filtered flows from the raw side to the clean side. The filter medium has faces that are flowed through by the fluid to be filtered. The filter medium is provided at least on one of the faces that are flowed through with beads extending transversely to the fold edges. In a proper operating state of the filter bellows, the beads effect a flow of at least a portion of the fluid to be filtered in a direction perpendicular to the fold edges.

Filter element with filter bellows

A filter element is provided with a folded bellows that has a first pleated section with parallel arranged first pleats and a second pleated section with parallel arranged second pleats. The first pleats of the first pleated section are positioned at an angle relative to the second pleats of the second pleated section. The end face edges of the first pleats of the first pleated section adjoin a first clean chamber. The end face edges of the second pleats of the second pleated section adjoin a second clean chamber. The second clean chamber is delimited by a longitudinal side of an edge-side pleat of the first pleated section. The first and second clean chambers are connected to each other. A filter insert with such a filter element is provided.

Pleated filter element

A filter insert piece has a filter element with first and second pleated sections each having parallel pleats. The first and second pleated sections each have an inflow side. A first flat outflow side of the first pleated section and a second flat outflow side of the second pleated section adjoin a common clean chamber of the filter element. A length of the pleats of the first and second pleated sections is such that a spacing of an outwardly positioned pleat end face of the pleats at the first or second inflow side, respectively, relative to the center axis increases or decreases monotonic from pleat to pleat. The respective end pleats of the first and of the second pleated sections have a different length extension measured from the outwardly positioned pleat end face of the first end pleats or the second end pleats relative to the center axis.

Filter insert piece comprising a pleated filter element

A filter medium for removing metallic particles, in particular for liquid filtration, is provided. The filter medium is comprised of a substrate, an adhesive layer containing magnetic particles applied onto the substrate, and at least one nanofiber layer arranged on the adhesive layer.

Magnetic filter medium and method for its production

A filter medium, in particular for air filtration, is provided with a substrate and at least one nanofiber layer applied onto the substrate. The nanofiber layer has cavities in or between the nanofibers. In a method for producing the nanofiber layer, a spinning solution for electrospinning from a polymer solution by a spinning electrode and a counter electrode is provided, wherein electrical voltage is applied to the spinning solution and air is passed through the spinning solution. The nanofibers produced by the spinning electrode are deposited onto the substrate that is moved past the counter electrode.

Nanofiber coating, method for its production, and filter medium with such a coating

A connecting socket for a filter hose has an inner part having a first contact surface extending in a circumferential direction on the inner part and an outer part having a second contact surface extending in a circumferential direction on the outer part. A contact section of a filter hose is contacting the first and second contact surfaces when secured on the connecting socket. The outer part has an outer sleeve that is pushed onto the inner part such that the contact section of the filter hose is clamped between the first and second contact surfaces.

Connecting socket for filter hoses

In a method for producing a polyamide nanofiber product that contains PTFE particles, a spinning solution containing polyamide, PTFE, and a conductivity-increasing additive is provided and nanofibers are produced by electrospinning from the spinning solution. The conductivity-increasing additive is an acid-resistant additive; a surfactant additive; or an acid-resistant and surfactant additive and contains one or more organic salts. The polyamide nanofiber product with PTFE particles is used in filter media and is especially applied to a filter layer of cellulose or synthetic material.

Method for producing a polyamide nanofiber product by electrospinning

In a method for manufacturing a filter end disc (), for example for a fluid filter () of a motor vehicle, a first plastic molding material (M) and a second plastic molding material (M) are injected in succession into a tool mold () in a monosandwich method or co-injection method in such a way that the second plastic molding material (M) is substantially surrounded by the first plastic molding material (M). To manufacture a fluid filter, the filter end disc () is further irradiated by a radiation beam (L) having pre-determined beam characteristics for melting the first plastic molding material (M), and a filter material () is applied to the at least partially melted first plastic molding material (M). A filter end disc (), in particular for a fluid filter () of a motor vehicle, said disc being manufactured according to a monosandwich method or co-injection method, comprises a first outer plastic molding material (M) and a second inner plastic molding material (M). In the process, the second plastic molding material (M) is surrounded by the first plastic molding material (M) and the first plastic molding material (M) is impermeable to water and/or water vapor.

Method for manufacturing a filter end disc and a fluid filter, filter end disc

A plastic end disk for a hollow-cylindrical filter element has an end face plastic layer and a neighboring plastic layer. The end face plastic layer is transparent for infrared radiation. The neighboring plastic layer is absorbent for infrared radiation. The plastic end disk is connected to a folded filter medium in that the end face plastic layer is trans-irradiated with an infrared radiation source, wherein the infrared radiation is absorbed in the neighboring plastic layer so that a portion of the neighboring plastic layer and a portion of the end face plastic layer are completely melted. The infrared radiation source is removed and the filter medium is pressed into a melted area of the end face plastic layer. The filter medium is secured in the pressed-in position in the end face plastic layer until a fixed connection of filter medium and end face plastic layer has been formed.

End disk

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Reisbach, Germany

Anton Kreiner