DE4126126A1 - FILTER AND MANUFACTURING PROCESS - Google Patents
FILTER AND MANUFACTURING PROCESSInfo
- Publication number
- DE4126126A1 DE4126126A1 DE4126126A DE4126126A DE4126126A1 DE 4126126 A1 DE4126126 A1 DE 4126126A1 DE 4126126 A DE4126126 A DE 4126126A DE 4126126 A DE4126126 A DE 4126126A DE 4126126 A1 DE4126126 A1 DE 4126126A1
- Authority
- DE
- Germany
- Prior art keywords
- beads
- filter body
- body according
- fold
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000011324 bead Substances 0.000 claims description 31
- 238000004049 embossing Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/012—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
- B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
Description
Die Erfindung betrifft einen Filterkörper aus einer relativ dünnwandigen, zwischen Faltenkanten zickzackförmig gefalteten Bahn aus Filtermaterial mit eingeformten Sicken nach dem Oberbegriff des Anspruchs 1, sowie Filterkörper aus diesen Materialien nach dem Oberbegriff des Patentanspruchs 4.The invention relates to a filter body from a relative thin-walled, folded zigzag between fold edges Web of filter material with molded beads after the Preamble of claim 1, and filter body made of these Materials according to the preamble of claim 4.
Außerdem betrifft die Erfindung ein Verfahren zur Herstellung der oben genannten Filterkörper nach den Oberbegriffen der Patentansprüche 13 und 14.The invention also relates to a method of manufacture the above filter body according to the generic terms of Claims 13 and 14.
Es ist aus der DE-PS 12 48 618 ein derartiger Filterkörper bekannt. Die Sicken sind so geformt, daß sich im verbauten Zustand sowohl auf der Anström- als auch auf der Abströmseite gleichartig geformte Zwischenräume ergeben. Bei der bekannten Ausführung liegt jeweils eine zur Anströmseite herausragende Sicke mit ihrer Längsseite an einer zur Abströmseite herausragenden Nachbarsicke. Beim Falten der Filterbahn führt dies dazu, daß sowohl anströmseitig als auch abströmseitig jeweils konvexe Ausbildungen als Abstandshalter aufeinandertreffen.It is from DE-PS 12 48 618 such a filter body known. The beads are shaped so that the built-in Condition on both the upstream and downstream side result in uniformly shaped spaces. With the known Execution is an outstanding on the upstream side Bead with its long side on one to the outflow side outstanding neighbor bead. When folding the filter sheet leads this means that both upstream and downstream each convex formations as spacers meet.
Abströmseitig bilden wie auch anströmseitig die nach außen weisenden Sicken den Abschluß, dies kann an dieser Stelle insbesondere, wenn das anströmende Medium unter Druck steht oder eine Flüssigkeit ist, zum Zusammenfallen des Filtermaterials führen, was zur Folge hat, daß sich die Filterkapazität verkleinert und die Strömungsquerschnitte sich verändern.On the downstream side as well as on the upstream side they form the outside pointing beads the conclusion, this can be done at this point especially when the inflowing medium is under pressure or is a liquid to collapse the Lead filter material, which has the consequence that the Filter capacity reduced and the flow cross-sections themselves change.
Es ist weiterhin aus der DE-PS 33 90 055 bekannt, daß ein Verfahren existiert, daß bei der Herstellung der Kerblinie geradlinige, miteinander fluchtende Kerbabschnitte und zwischen diesen Kerbabschnitten gegenüber der Mittelachse der geradlinigen Kerbabschnitte seitlich versetzte Kerbabschnitte erzeugt werden, die miteinander abwechseln und derart beim Falten ohne weitere Zwischenmanipulationen über die Faltkantenlänge gesehen abwechselnd spitze Faltenkanten und flächige Abstandshalter schaffen. Führt man die Prägung der flächigen Abstandshalter nun undefiniert verteilt über die Faltkantenlänge aus, so läuft man Gefahr, daß das Filterpapier Perforationen erleidet.It is also known from DE-PS 33 90 055 that a Process exists in the making of the score line rectilinear, aligned notch sections and between these notch sections with respect to the central axis of the rectilinear notch sections laterally offset notch sections are generated, which alternate with each other and so when Wrinkles without any further manipulation across the Folded edge length alternately pointed fold edges and Create flat spacers. If one carries out the embossing of the flat spacers now undefined distributed over the Folded edge length, so there is a risk that the filter paper Perforations suffered.
Es ist ferner seit Jahrzehnten bekannt, daß derartige Filterkörper mit Abplattungen zum Zwecke der Abstandshaltung, zumindest im Randbereich des Filterkörpers hergestellt werden.It has also been known for decades that such Filter body with flattening for the purpose of spacing, be produced at least in the edge region of the filter body.
Die Aufgabe der Erfindung besteht darin, die oben genannten Nachteile zu vermeiden, die Zahl der Fertigungsschritte zu verringern und die Staubkapazität zu erhöhen. Es ist das Ziel der Erfindung, das großflächige Aneinanderliegen der einzelnen Falten zu vermeiden. Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß mindestens eine der Sicken nach den kennzeichnenden Merkmalen des Patentanspruchs 1 ausgebildet ist.The object of the invention is the above To avoid disadvantages, the number of manufacturing steps decrease and increase the dust capacity. It is the goal the invention, the large-scale abutting the individual To avoid wrinkles. The object is achieved according to the invention solved that at least one of the beads after the characteristic Features of claim 1 is formed.
Eine alternative Lösung ist darin zu sehen, daß mindestens eine der Sicken nach den kennzeichnenden Merkmalen des Patentanspruchs 4 ausgebildet ist.An alternative solution is that at least one the beads according to the characteristic features of the Claim 4 is formed.
Der Vorteil der Lösung ist darin zu sehen, daß die im Hauptanspruch angesprochene Methode ein vereinfachtes Herstellen ermöglicht, die zusätzlich die Staubkapazität und die Stabilität des Filterkörpers erhöht sowie eine Perforation des Papiers vermeidet.The advantage of the solution is that the im Main approach addressed a simplified method Manufacture, which also has the dust capacity and the stability of the filter body increases and perforation avoids the paper.
Eine vorteilhafte Weiterbildung der Erfindung stellt die Teilung der Faltenkante dar, um durch eine durch die Prägung verursachte räumliche Verbreiterung der Faltenkante definierte Abstandshaltung der Falten zu erreichen.An advantageous development of the invention is the Division of the fold edge by one through the embossing caused spatial widening of the fold edge defined To maintain spacing of the folds.
Einen vorteilhaften Nebeneffekt der Erfindung stellt das Versehen der Sicke mit Leim dar, um einen aushärtbar und somit dauerhaft abstandshaltenden Streifen zu erzeugen.This is an advantageous side effect of the invention Provide the bead with glue to make it curable and therefore to create permanently spacing strips.
Eine vorteilhafte Ausgestaltung der Erfindung stellt das Versehen der Sicke mit Leim dar, um eine dauerhafte Klebeverbindung herzustellen, die es erlaubt, auch verdrehsteife Filterkörper zu erzeugen.This is an advantageous embodiment of the invention Provide the beading with glue to make it permanent Establish adhesive bond that allows it, too to produce torsionally rigid filter bodies.
Besonders vorteilhafte Verfahren zur Herstellung eines Filterkörpers sind dadurch gekennzeichnet, daß sie gemäß den kennzeichnenden Merkmalen der Patentansprüche 13 und 14 ausgestaltet sind.Particularly advantageous method for producing a Filter body are characterized in that they according to the characterizing features of claims 13 and 14 are designed.
Mehrere Ausführungsbeispiele der Erfindung und ihrer vorteilhaften Weiterbildungen werden im folgenden unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben. Es stellen dar:Several embodiments of the invention and its Advantageous further developments are described below Described in more detail with reference to the accompanying drawings. They represent:
Fig. 1 eine Draufsicht eines ausgestreckten Filterkörpers; Fig. 1 is a plan view of a stretched filter body;
Fig. 2 eine perspektivische Darstellung eines Filterkörpers; Fig. 2 is a perspective view of a filter body;
Fig. 3 eine Draufsicht auf einen gefalteten Filterkörper; Fig. 3 is a plan view of a pleated filter body;
Fig. 4 eine Draufsicht eines gefalteten Filterkörpers mit Leim; Figure 4 is a plan view of a pleated filter body with glue.
Fig. 5 einen Schnitt durch den Filterkörper in Fig. 4; FIG. 5 shows a section through the filter body in FIG. 4;
Fig. 6 eine Draufsicht auf einen Filterkörper mit Leim; Fig. 6 is a plan view of a filter body with glue;
Fig. 7 einen Schnitt durch den Filterkörper in Fig. 6; FIG. 7 shows a section through the filter body in FIG. 6;
Fig. 8 einen Schnitt durch die Prägung, die im Faltenkantenbereich konkav ist; Fig. 8 is a section through the stamping, which is concave at the pleat edge portion;
Fig. 9 einen Schnitt durch die Prägung, die im Faltenbereich konvex ist. Fig. 9 shows a section through the embossing, which is convex in the fold area.
Fig. 10 eine Draufsicht auf einen Filterkörper, der mit Hilfe der durchgehenden Prägung und von zusätzlich aufgebrachtem Leim geschlossene Rohrquerschnitte hat. Fig. 10 is a plan view of a filter body, which has closed tube cross sections with the help of continuous embossing and additionally applied glue.
Der mit Hilfe von lediglich einer Prägewalze hergestellte Filterkörper 1 wird mit durchgehenden Sicken 2 oder mit zusätzlichen, zwischen den längs des Filterkörpers laufenden Sicken angebrachten Prägungen, die sich als Abplattungen 3 ausprägen, versehen (Fig. 1, 2, 3, 4, 6). Garantierte bisher eine Imprägnierung die Formstabilität solcher Filter, so übernehmen diese Funktion die räumlichen Prägungen, die sowohl im Bereich der Faltenkanten als auch im weiteren Verlauf der Filterbahn alle in den Unteransprüchen genannten Formen annehmen können. Die im Bereich der Faltenkanten angebrachten Abplattungen 3 (oval, rund, vieleckig, konvex oder konkav) verhindern ein Zusammenfallen des Filterkörpers 1 und garantieren eine konstante Staubaufnahmekapazität (Fig. 1, 2, 3, 4, 6). In Fig. 8 wird die konkave Prägung im Bereich der Faltenkante dargestellt, die konvexe Prägung in genanntem Bereich zeigt Fig. 9. Zur zusätzlichen Erhöhung der Verwindungssteifigkeit und zur Einstellung eines definierten Faltenabstands dient das Versehen mindestens einer Sicke mit Leim 4 (Fig. 4, 5, 6, 7). The filter body 1 , which is produced with the aid of only one embossing roller, is provided with continuous beads 2 or with additional embossments which are provided between the beads running along the filter body and which are in the form of flattenings 3 ( FIGS. 1, 2, 3, 4, 6). . Previously, impregnation guaranteed the dimensional stability of such filters, this function is taken over by the spatial embossing, which can take on all of the shapes mentioned in the subclaims both in the area of the fold edges and in the further course of the filter path. The flattened areas 3 (oval, round, polygonal, convex or concave) in the area of the fold edges prevent the filter body 1 from collapsing and guarantee a constant dust holding capacity ( FIGS. 1, 2, 3, 4, 6). FIG. 8 shows the concave embossing in the area of the fold edge, the convex embossment in the area mentioned shows FIG. 9. To at least increase the torsional rigidity and to set a defined fold distance, the provision of at least one bead with glue 4 is used ( FIG. 4, 5, 6, 7).
Zur Erzeugung von geschlossenen Rohrquerschnitten, die der weiteren Erhöhung der Steifigkeit dienen, versieht man die inneren Kanten der durchgehenden Sicken mit Leim 4 (Fig. 10).In order to produce closed pipe cross sections which serve to further increase the rigidity, the inner edges of the continuous beads are provided with glue 4 ( FIG. 10).
BezugszeichenlisteReference list
1 Filterkörper
2 durchgehende Sicke
3 Abplattungen
4 Leim
5 Faltenkante 1 filter body
2 continuous beads
3 flattenings
4 glue
5 fold edge
Claims (14)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4126126A DE4126126C2 (en) | 1991-08-07 | 1991-08-07 | Filter manufacturing process |
PL29886292A PL298862A1 (en) | 1991-08-07 | 1992-07-21 | Filter and method of making same |
PCT/EP1992/001657 WO1993002769A1 (en) | 1991-08-07 | 1992-07-21 | Filter and method of manufacture |
MX9204560A MX9204560A (en) | 1991-08-07 | 1992-08-06 | IMPROVEMENTS IN A FILTERING BODY AND PROCEDURE TO MANUFACTURE THE SAME. |
TR92/0765A TR26163A (en) | 1991-08-07 | 1992-08-07 | FILTER AND MANUFACTURING METHOD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4126126A DE4126126C2 (en) | 1991-08-07 | 1991-08-07 | Filter manufacturing process |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4126126A1 true DE4126126A1 (en) | 1993-02-11 |
DE4126126C2 DE4126126C2 (en) | 1998-02-12 |
Family
ID=6437855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4126126A Expired - Lifetime DE4126126C2 (en) | 1991-08-07 | 1991-08-07 | Filter manufacturing process |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE4126126C2 (en) |
MX (1) | MX9204560A (en) |
PL (1) | PL298862A1 (en) |
TR (1) | TR26163A (en) |
WO (1) | WO1993002769A1 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5804014A (en) * | 1993-12-30 | 1998-09-08 | Detroit Holding Limited | Process for providing a filter insert |
US5868889A (en) * | 1993-12-30 | 1999-02-09 | "Jacobi" Systemtechnik Gmbh | Process for manufacturing a fluid filter |
DE19735993A1 (en) * | 1997-08-19 | 1999-02-25 | Mann & Hummel Filter | Long-life filter element for e.g. hot oil, fuel and water |
US5888262A (en) * | 1993-12-30 | 1999-03-30 | "Jacobi" Systemtechnik Gmbh | Filter insert and process for producing it |
DE19755466A1 (en) * | 1997-12-03 | 1999-06-10 | Jacobi Systemtechnik Gmbh | Glue application for continuous filter element manufacture |
DE4345130C1 (en) * | 1993-12-30 | 2000-11-23 | Jacobi Systemtechnik Gmbh | Hollow cylindrical filter element |
EP1059108A1 (en) * | 1999-06-11 | 2000-12-13 | Filtrauto | Filter element for internal combustion engine |
DE10015951A1 (en) * | 1999-12-22 | 2001-07-05 | Jacobi Systemtechnik Gmbh | Air filter has supports at inflow and/or outflow sides overlapping with projection of built-up adhesive on plane of neighboring folded wall for increased resistance to changing pressure directions |
EP2764905A1 (en) * | 2013-02-12 | 2014-08-13 | Mann + Hummel Gmbh | Filter body |
WO2015082584A1 (en) * | 2013-12-05 | 2015-06-11 | Mann+Hummel Gmbh | Filter element with filter bellows |
DE102015122746A1 (en) | 2015-12-23 | 2017-06-29 | Neenah Gessner Gmbh | Filter material and filter element made therefrom |
US10058812B2 (en) | 2010-01-25 | 2018-08-28 | Donaldson Company, Inc. | Pleated filtration media having tapered flutes |
US11298645B2 (en) | 2007-06-26 | 2022-04-12 | Donaldson Company, Inc. | Filtration media pack, filter element, and methods |
US11612845B2 (en) | 2007-02-02 | 2023-03-28 | Donaldson Company, Inc. | Air filtration media pack, filter element, air filtration media, and methods |
US12048888B2 (en) | 2008-07-25 | 2024-07-30 | Donaldson Company, Inc. | Pleated filtration media, media packs, filter elements, and methods for filtering fluids |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19711230B4 (en) * | 1996-05-03 | 2011-09-15 | BLüCHER GMBH | Flat filter material with adsorptive properties |
US6824581B1 (en) * | 2001-05-01 | 2004-11-30 | Dana Corporation | Pleated filter media with embossed spacers and cross flow |
US7425227B1 (en) | 2004-06-17 | 2008-09-16 | Wix Filtration Corp Llc | Pleated filter element with offset emboss pattern |
WO2009100067A1 (en) | 2008-02-04 | 2009-08-13 | Donaldson Company, Inc. | Method and apparatus for forming fluted filtration media |
JP5711230B2 (en) | 2009-08-03 | 2015-04-30 | ドナルドソン カンパニー,インコーポレイティド | Method and apparatus for forming fluted filtration media having tapered flutes |
EP3474965A4 (en) * | 2016-06-24 | 2020-02-05 | K & N Engineering, Inc. | Compound air filters and methods thereof |
DE102019115568A1 (en) | 2019-06-07 | 2020-12-10 | Mann+Hummel Gmbh | Filter element and filter system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2311854A1 (en) * | 1972-03-11 | 1973-09-20 | Gen Motors Ltd | FLUID FILTER ARRANGEMENT |
US4615804A (en) * | 1984-08-30 | 1986-10-07 | Donaldson Company, Inc. | High density pleat spacing and scoring tool and filter made therewith |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1248618B (en) * | 1968-03-21 | Filterwerk Mann &. Hummel G.m.b.H., 7140 Ludwigsburg | Filter body made from a zigzag folded sheet of a relatively thin-walled filter material | |
US4452619A (en) * | 1982-06-18 | 1984-06-05 | Donaldson Company, Inc. | Pleated filter element having integral pleat spacers |
DE3300293A1 (en) * | 1983-01-07 | 1984-07-12 | Ing. Walter Hengst GmbH & Co KG, 4400 Münster | Filter body |
-
1991
- 1991-08-07 DE DE4126126A patent/DE4126126C2/en not_active Expired - Lifetime
-
1992
- 1992-07-21 PL PL29886292A patent/PL298862A1/en unknown
- 1992-07-21 WO PCT/EP1992/001657 patent/WO1993002769A1/en active Application Filing
- 1992-08-06 MX MX9204560A patent/MX9204560A/en unknown
- 1992-08-07 TR TR92/0765A patent/TR26163A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2311854A1 (en) * | 1972-03-11 | 1973-09-20 | Gen Motors Ltd | FLUID FILTER ARRANGEMENT |
US4615804A (en) * | 1984-08-30 | 1986-10-07 | Donaldson Company, Inc. | High density pleat spacing and scoring tool and filter made therewith |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5804014A (en) * | 1993-12-30 | 1998-09-08 | Detroit Holding Limited | Process for providing a filter insert |
US5868889A (en) * | 1993-12-30 | 1999-02-09 | "Jacobi" Systemtechnik Gmbh | Process for manufacturing a fluid filter |
US5888262A (en) * | 1993-12-30 | 1999-03-30 | "Jacobi" Systemtechnik Gmbh | Filter insert and process for producing it |
DE4345130C1 (en) * | 1993-12-30 | 2000-11-23 | Jacobi Systemtechnik Gmbh | Hollow cylindrical filter element |
DE19735993A1 (en) * | 1997-08-19 | 1999-02-25 | Mann & Hummel Filter | Long-life filter element for e.g. hot oil, fuel and water |
WO1999008771A2 (en) * | 1997-08-19 | 1999-02-25 | Filterwerk Mann + Hummel Gmbh | Filter element, in particular for filtering liquids |
WO1999008771A3 (en) * | 1997-08-19 | 1999-05-14 | Mann & Hummel Filter | Filter element, in particular for filtering liquids |
DE19755466A1 (en) * | 1997-12-03 | 1999-06-10 | Jacobi Systemtechnik Gmbh | Glue application for continuous filter element manufacture |
EP1059108A1 (en) * | 1999-06-11 | 2000-12-13 | Filtrauto | Filter element for internal combustion engine |
FR2794798A1 (en) * | 1999-06-11 | 2000-12-15 | Filtrauto | FILTER ELEMENT FOR INTERNAL COMBUSTION ENGINE |
DE10015951A1 (en) * | 1999-12-22 | 2001-07-05 | Jacobi Systemtechnik Gmbh | Air filter has supports at inflow and/or outflow sides overlapping with projection of built-up adhesive on plane of neighboring folded wall for increased resistance to changing pressure directions |
DE10015951C2 (en) * | 1999-12-22 | 2002-09-26 | Jacobi Systemtechnik Gmbh | filter element |
US11612845B2 (en) | 2007-02-02 | 2023-03-28 | Donaldson Company, Inc. | Air filtration media pack, filter element, air filtration media, and methods |
US11298645B2 (en) | 2007-06-26 | 2022-04-12 | Donaldson Company, Inc. | Filtration media pack, filter element, and methods |
US12017177B2 (en) | 2007-06-26 | 2024-06-25 | Donaldson Company, Inc. | Filtration media pack, filter element, and methods |
US12048888B2 (en) | 2008-07-25 | 2024-07-30 | Donaldson Company, Inc. | Pleated filtration media, media packs, filter elements, and methods for filtering fluids |
US10058812B2 (en) | 2010-01-25 | 2018-08-28 | Donaldson Company, Inc. | Pleated filtration media having tapered flutes |
US11413563B2 (en) | 2010-01-25 | 2022-08-16 | Donaldson Company, Inc. | Pleated filtration media having tapered flutes |
EP2764905A1 (en) * | 2013-02-12 | 2014-08-13 | Mann + Hummel Gmbh | Filter body |
WO2015082584A1 (en) * | 2013-12-05 | 2015-06-11 | Mann+Hummel Gmbh | Filter element with filter bellows |
DE102015122746A1 (en) | 2015-12-23 | 2017-06-29 | Neenah Gessner Gmbh | Filter material and filter element made therefrom |
US11198079B2 (en) | 2015-12-23 | 2021-12-14 | Neenah Gessner Gmbh | Filter material and filter element produced therefrom |
Also Published As
Publication number | Publication date |
---|---|
MX9204560A (en) | 1993-02-01 |
TR26163A (en) | 1995-02-15 |
PL298862A1 (en) | 1993-11-02 |
WO1993002769A1 (en) | 1993-02-18 |
DE4126126C2 (en) | 1998-02-12 |
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