WO2016046127A1 - Élément formant filtre pourvu d'un soufflet de filtre - Google Patents

Élément formant filtre pourvu d'un soufflet de filtre Download PDF

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Publication number
WO2016046127A1
WO2016046127A1 PCT/EP2015/071594 EP2015071594W WO2016046127A1 WO 2016046127 A1 WO2016046127 A1 WO 2016046127A1 EP 2015071594 W EP2015071594 W EP 2015071594W WO 2016046127 A1 WO2016046127 A1 WO 2016046127A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
layer
filter element
beads
filter medium
Prior art date
Application number
PCT/EP2015/071594
Other languages
German (de)
English (en)
Inventor
Nadine WERCHNER
Original Assignee
Mann+Hummel Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Priority to DE112015004381.0T priority Critical patent/DE112015004381A5/de
Priority to CN201580051916.2A priority patent/CN106714935A/zh
Publication of WO2016046127A1 publication Critical patent/WO2016046127A1/fr

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Classifications

    • 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
    • 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/12—Pleated filters
    • B01D2201/127—Pleated filters with means for keeping the spacing between the pleats

Definitions

  • the invention relates to a filter element for filtering a fluid with a filter bellows from a zigzag, in particular star-shaped folded filter medium, in particular for use as a round filter an internal combustion engine, in particular a motor vehicle and a method and a system for producing such a filter element.
  • Forehead wrinkles are the two outer folds, on opposite end faces of the filter bellows of a filter element.
  • End edges are the two free edges of the filter medium from which the filter bellows is formed, which run along the end folds and delimit these at the end faces of the filter bellows.
  • End edges of the filter bellows are the other two free edges of the filter bellows, which extend between the end edges and extend in accordance with the folding of the filter bellows.
  • the fold edges are the edges along which the filter media is folded. In a known from the market zigzag folded, approximately cuboid filter bellows, the front edges and the folding edges are usually straight and parallel to each other.
  • the end edges extend from the side of the filter bellows seen zigzag and perpendicular to the end edges and the fold edges.
  • the front edges of the filter bellows which later have an approximately rectangular imaginary envelope, run straight and parallel to one another.
  • the imaginary envelope is spanned by the end edges, the fold edges or end edges adjacent to a clean fluid side of the filter bellows, and the fold edges or end edges adjacent to a raw fluid side.
  • Filterbälgen of flat filter elements the filter media are not closed, that is, the forehead wrinkles are just like the front edges are not connected.
  • Filterbälgen of round filter elements the filter media are closed, that is, their forehead wrinkles are interconnected.
  • Filter bellows from Flach- Filter elements can be flat, but also have bends in different directions.
  • a filter system which has a folded filter element with longitudinally extending folds, which have knobs, and a wrapper, which is helically wound around the filter element and abuts against the crests of the folds and openings for the enlargement has the dirt capacity of the filter element, the total area of the openings being less than about half of the total surface area defined by the crests of the pleats.
  • the filter element comprises a pleated composite having a first and a second extruded polymeric mesh layer and a filter layer disposed therebetween.
  • An object of the invention is therefore to provide a filter element for filtering a fluid which provides a stabilization and drainage possibility in the filter medium in terms of production and cost favorable. Another object is to provide a method and a system for producing a filter element, which provides a stabilization and drainage possibility in the filter medium in terms of production and cost favorable.
  • the above object is achieved according to one aspect of the invention of a filter element with a filter medium having one or more multi-layered beads, which extend transversely to fold edges of the filter medium and which cause in the normal state of the filter bellows a flow of fluid perpendicular to the folded edges of the filter bellows ,
  • the further object is achieved by a method and a system for producing such a filter element with a filter medium having one or more multilayer beads, which extend transversely to fold edges of the filter medium and which in the normal state of the filter bellows, a flow of the fluid perpendicular to the folding edges cause the filter bellows.
  • a filter element for filtering a fluid comprising a filter bellows of a filter medium, which is folded in folds zigzag, in particular star-shaped into folds, each extending between opposite end edges of the filter bellows, and which filter medium for flowing with the fluid of a Raw side of the filter element is provided to a clean side, wherein the filter medium has at least one of its flowed through surfaces one or more beads which extend transversely to the folding edges of the filter medium and which in the normal operating condition of the filter bellows a flow of at least a portion of the fluid perpendicular to cause the folding edges of the filter bellows, wherein the beads each comprise at least a first layer and a second layer lying thereon.
  • the first layer can serve as an adhesion promoter and the second layer as the actual structural layer, which serves the function of a spacer between the folds of- causes each other.
  • the adhesion of the beads and the function of the beads can be optimized independently.
  • the beads adhere better to the filter medium, so that unwanted detachment of the beads from the filter medium can be prevented or at least significantly reduced.
  • the beads of glue, hot melt adhesive or plastic in particular a thermoplastic Kunststoffsoff.
  • the grid glue or plastic beads are applied before or after embossing of the filter medium in the form of beads.
  • These beads can be applied along the processing direction of the filter medium at high speed, which are completely or at least largely cured before setting up the folds of the filter medium and ensure drainage and ensure a stabilizing effect of the filter medium.
  • the grid and the lamination process can be omitted.
  • the beads may be in particular glue or plastic caterpillars.
  • the glue or plastic caterpillars can be applied during bellows production. The inventive solution thus represents a considerable time and cost savings compared to the conventional lamination process.
  • the folds of the filter bellows can be designed both with rounded and pointed fold edges when applying the glue or plastic beads according to the invention.
  • the drainage effect of the beads consists in diverting at least part of the filtered fluid along the beads from the folds of the filter bellows into the inner region of the filter element, so that the fluid can not accumulate in the folds and thus limit the flow of the fluid. Also, the deposition of possible dirt particles can be distributed over the surface of the filter medium.
  • the beads in the folded state of the filter medium at least in the operating state, a spacing of opposite Faltkanten vom a Crease of the filter bellows effect.
  • the beads can certainly have a certain spacing.
  • the beads can prevent opposing fold edge surfaces of a fold of the filter bellows from touching or even sticking together since the opposite beads meet at the same height and thus ensure a distance between the Faltkanten inhabit.
  • the opposite beads are each constructed in two layers, so that the opposite beads are thus constructed of at least four layers. The respective second layers of the opposite beads can only rest against each other. Possibly, however, the two second layers can also be glued together by the filter medium is still folded in the uncured state of the second layers.
  • a distance between the parallel beads of the order of 5 to 7 mm, for example.
  • this value depends on the stiffness of the filter medium and the fluid to be filtered, as well as the material of the bead.
  • a height of the beads of, for example, 0.1 mm to 3 mm is advantageous. This value also depends on the boundary conditions of the filter medium, the fluid and the material.
  • a vacuum applied to the filter element in particular during operation of an internal combustion engine in the intake tract, can cause the interspace folds to collapse locally or even over the entire width of the filter medium, ie to come into direct contact with filter medium sections located on the clean side.
  • the first layer may have a smaller thickness than the second layer.
  • the first layer can be optimized independently of the second or each further layer for its property as a primer.
  • the first layer can be applied under pressure to the filter medium with a flat die, or in another way, which makes possible a particularly good adhesion to the filter medium for the first layer.
  • the first layer may partially penetrate into the filter medium and thus firmly anchor the second layer applied thereto.
  • the first layer is pressed after application to ensure penetration of the first layer into the filter medium.
  • the second layer may have a ratio of the width to the height of the layer of approximately 1, i. the width of the second layer is equal to or approximately equal to the height of the applied layer.
  • the second layer may be applied to form the first layer, a material having a lower viscosity than for the second layer. This allows a partial penetration of the material of the first layer into the surface of the filter medium, especially in the case of fibrous or open-pore filter media, and a particularly intimate connection of the first layer with the filter medium, which enables a particularly secure and permanent adhesion of the second and any further layers to the filter medium ,
  • the first layer may be applied to form the first layer, the same material as for the second layer.
  • the material of the first layer may be different from that of the second and any further layers.
  • the first layer may be an adhesive and / or a plastic and / or a hot melt adhesive and / or a precursor to the material of the second layer.
  • the first layer may be interrupted along its longitudinal extent at least in regions, and the second layer lying thereon may be formed continuously along its longitudinal extent.
  • the first layer does not necessarily have to be continuous, but can also be interrupted or have holes in its surface.
  • the first layer can also be soft or plastic.
  • the second layer can be particularly well connected to the first layer.
  • the first layer along its longitudinal extension may be formed continuously at least in some areas and the second layer lying thereon may be interrupted along its longitudinal extension. The person skilled in the art will choose the suitable combination depending on the desired product.
  • the beads may be arranged on the intended clean side of the filter medium.
  • a drainage effect by the beads by discharging the filtered fluid can be represented.
  • Next is prevented with the same stabilizing effect that occurs by contouring the filter medium when attaching beads on the raw side non-uniform deposition of dirt on the surface of the filter medium.
  • the beads may be formed by applying a hot melt adhesive. It is also advantageous if the beads are formed by applying a hot melt adhesive.
  • a hot melt adhesive such a process can be favorably integrated into the usual production process in the manufacture of a filter bellows, in which the filter medium usually runs in long paths through an embossing unit. Additional glue application stations may be provided which apply the hot melt adhesive at the same speed so that the normal manufacturing process is possible with a high speed required for mass production.
  • the filter element may be formed of a filter medium consisting of cellulose, staple fibers, meltblown fibers, micro or nano fibers, woven or knitted fibers, a nonwoven fabric or a combination of these substances.
  • the filter bellows may be formed as a hollow cylindrical round element with a star-folded filter medium.
  • the originally flat filter bellows can be formed from a zigzag-folded filter medium into a star-shaped hollow cylinder which is closed, for example glued, along an end edge. The fluid to be filtered can then flow through the filter medium via the outer surface of the hollow cylinder and flow away via the inner region of the hollow cylindrical filter along the axis of the hollow cylinder.
  • the invention relates to the use of the filter element as a round filter for filtering a fluid, in particular as a round filter of an internal combustion engine.
  • a round filter for filtering a fluid
  • Such round filters are preferably used in the automotive field as air, oil, or fuel filter or the like and used on the internal combustion engine as interchangeable filter elements with regular change intervals.
  • the filter element according to the invention allows a permanent stable operation of the filter element in a filter system.
  • the invention relates to a method for producing a filter element according to the invention comprising the following manufacturing steps of a filter bellows: unwinding the filter medium from a roll, storing the filter medium in a goods storage, applying beads to the filter medium before or after embossing for formation of folding edges, pressing the beads, placing the folded edges to a zigzag, in particular star-shaped folded filter bellows.
  • a filter bellows unwinding the filter medium from a roll, storing the filter medium in a goods storage, applying beads to the filter medium before or after embossing for formation of folding edges, pressing the beads, placing the folded edges to a zigzag, in particular star-shaped folded filter bellows.
  • Such a process can be favorably integrated into the usual production process in the manufacture of a filter bellows, in which the filter medium usually runs in long paths through an embossing unit.
  • additional adhesive application stations can be provided, which apply the hot melt adhesive at the same speed, so that the normal production process is not hinder
  • the first layer of the beads can be applied with a first nozzle and the second layer of the beads with a second nozzle after the first layer.
  • the method for producing a filter element may comprise further manufacturing steps of a filter bellows such as heating the filter medium in preparation for embossing, embossing of fold edges in the filter medium.
  • the embossing of folded edges in the filter medium can be made favorable by preheating the filter medium, since the embossed fold edges remain so permanently.
  • the application of the layers of the beads can be done before embossing the fold edges.
  • the application of the beads can also take place after the embossing of the folded edges.
  • the beads can be advantageously pressed onto the filter medium after application to the filter medium in order to achieve a good and lasting adhesion. This can be favorably effected, for example, by a rolling process.
  • the invention relates to a system for producing a filter element, which comprises at least the following aggregates for producing a filter bellows: an unwinder, a goods storage, a polymer application station for applying the beads in several, at least two, successive layers, a flow heater, an embossing unit, as well as a Faltenaufstellaggregat.
  • a hot melt application station if a hot melt glue bead is used as the bead.
  • a pressure roller can be provided with which one or more layers of the beads can be pressed against the filter medium. It can be pressed only the first layer, or only the second layer or each of the layers. On a pressure roller can also be dispensed with, if the first layer is thin enough and can penetrate directly into the filter medium.
  • Fig. 1 is an isometric view of a filter element according to an embodiment of the invention
  • FIG. 2 shows a partial cross section through a filter element according to an embodiment of the invention.
  • Fig. 3 is a plan view of a filter medium according to an embodiment of the
  • FIG. 5 schematically shows a section through a filter medium with two parallel beads with two layers
  • FIG. 6 shows schematically the application of multi-ply beads to a filter medium
  • Fig. 7 is a schematic representation of a system for producing a filter element according to an embodiment of the invention.
  • FIG. 1 shows an isometric view of a filter element 10 according to an embodiment of the invention.
  • the filter element 10 for filtering a fluid comprises a filter bellows 12 made of a filter medium 14, which along star-shaped fold edges 26 is folded into folds 34, each extending between opposite end edges 22a, 22b of the filter bellows 12.
  • the filter medium 14 is provided for flowing through with the fluid from a raw side 50 of the filter element to a clean side 52, specifically in a flow direction 54 from an outer surface to an inner region of the filter element 10.
  • the filter medium 14 has on several of its surfaces through a plurality of beads 40 on the clean side 52 (shown in Figures 2 to 6), which extend transversely to fold edges 26 of the filter medium 14 and which in the normal operating condition of the filter bellows 12 a flow of at least a portion of Fluids perpendicular to the folded edges 26 of the filter bellows 12 effect.
  • the filter element 10 in FIG. 1 is designed as a hollow-cylindrical round filter element with a star-folded filter medium 14. Such round filter elements are preferably used in the automotive sector as air, oil or fuel filters or the like and used on the internal combustion engine as replaceable filter elements 10 with regular change intervals.
  • the filter bellows 12 is closed on both end faces with end disks 16, 18, which comprise a central central tube 38, through which the filtered fluid can also flow in the direction of flow 54.
  • FIG. 2 shows a partial cross section through a filter element 10 according to an exemplary embodiment of the invention, as shown in FIG.
  • the cross-section shows a plurality of folds 34 of the filter bellows 12, which are folded at folded edges 26.
  • the fluid to be filtered passes from a raw side 50 outside of the round filter 10 in an inner region of the filter element 10 with the clean side 52.
  • the filter bellows 12 is stiffened in the interior with a central tube 38, which is partially seen cut.
  • the filter medium 14 has on the clean side 52 multi-ply beads 40.
  • the beads 40 in addition to the drainage effect for discharging the filtered fluid, in the folded state of the filter medium 14 at least in the operating state, a spacing of opposite Faltkanten inhabit 20a, 20b of a fold 34 of the filter bellows 12.
  • the beads 40 may in particular on the Faltkantendon 20a, 20b and interrupted or formed thinner in the curvature region of the folds 34.
  • Figure 3 shows a plan view of a filter medium 14 according to an embodiment of the invention.
  • the flat filter medium 14 has folded edges 26 in regular Ab- stood up, which may be formed by stampings of Filternediunns 14. Walls 40 extend transversely thereto.
  • the beads 40 can be formed, for example, by applying at least two layers of a hot-melt adhesive.
  • Figures 4 to 6 show the formation of such beads 40 from at least two layers 42, 44.
  • the first layer 42 has a smaller thickness than the second layer 44.
  • a material having a lower viscosity the filter medium 14 may be applied as for the second layer 44.
  • the filter medium may be, for example, a non-woven or the like.
  • the material of the first layer 42 may partially penetrate into the surface of the filter medium 14 and form there a good anchor for subsequent layers.
  • the first layer 42 may have a width to height ratio of approximately one.
  • the first layer 42 can be applied in a process step of the production of the filter element by means of a nozzle 1 16 on the filter medium 14, which is guided at high speed past the nozzle 1 16, as shown in Figure 6.
  • the filter medium 14 is moved in the figure in the direction of arrow to the right under the nozzle 1 16.
  • a further nozzle 1 18 is arranged, with which the second layer 44 is applied to the first layer 42.
  • the beads 40 may be formed, for example, of hot melt adhesive.
  • FIG. 7 shows a schematic representation of a plant 100 for producing a filter element 10 according to an exemplary embodiment of the invention.
  • the method for producing a filter element 10 according to the invention comprises the following manufacturing steps of a filter bellows 12: unwinding the filter medium 14 from a roll, storing the filter medium 14 in a goods storage 104, applying multi-layered beads 40 to the filter medium 14 before or after embossing for Forming of folding edges 34, pressing the beads 40 before and / or after applying the second layer, setting the folding edges 34 to a star-folded filter bellows 12.
  • Such a process can be conveniently in the usual manufacturing process in the production of a filter bellows 12th integrate, in which the filter medium 14 usually runs in long lanes through a stamping unit 1 10.
  • additional adhesive application stations 106 can be provided, which seal the hot melt adhesive in the same Apply with speed, so that the normal production process is not hindered. Also interruptions in the applied beads 40 can be provided so low by the adhesive application stations 106 are driven accordingly and provided with valves.
  • the application of the beads 40 may be provided before or after an embossing process. If the beads 40 are applied before embossing, then they can be provided with the folding edges 26 in the embossing process with tapers at the intersection points in order to favor the setting up of the folded edges 26, in particular tapering, folds 34. Alternatively, however, the beads 40 may be applied after the stamping process. In this case, tapering can be realized by interruptions in the beads 40, for example by application of hot melt glue beads interrupted at the folding edges 26.
  • the beads 40 may be advantageously pressed onto the filter medium 14 after application to the filter medium 14 in order to achieve a good and lasting adhesion. This can be favorably effected, for example, by a rolling process.
  • the method for producing a filter element 10 may include further manufacturing steps of a filter bellows 12 such as heating the filter medium in preparation for embossing, embossing folding edges 26 in the filter medium 14.
  • the embossing of folded edges 26 in the filter medium 14 can be made low by preheating the filter medium 14, since the embossed fold edges 26 remain so permanently.
  • a filter bellows 12 comprises the following aggregates for producing a filter bellows 12: an unwinder 102, a goods storage 104, a polymer application station 106 for applying a first layer of the beads 42, optionally a pressure roller 107 for pressing the first layer of the Wulst 40 to the filter medium 14, a polymer application station 106 for applying a second layer of the beads 42, a not shown further optional pressure roller 107 for pressing the second layer of the beads 40 to the filter medium 14, a flow heater 108, a stamping unit 1 10, and a Fold-up unit 1 12.
  • the Polymer applicator stations 106 may also be provided with hot melt adhesive application stations if a bead of hot melt adhesive bead is to be used as the bead 40.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un élément (10) formant filtre pour filtrer un fluide, comprenant un soufflet (12) de filtre constitué par un milieu filtrant (14), qui est plié le long de bords de pliage (26) en plis (34) en forme d'étoile, qui s'étendent à chaque fois entre des faces frontales (22a, 22b) opposées du soufflet (12) de filtre et le milieu filtrant (14) étant prévu pour l'écoulement du fluide d'un côté brut (50) de l'élément formant filtre vers un côté pur (52). Le milieu filtrant (14) présente, au niveau d'au moins une de ses surfaces traversées, un ou plusieurs bourrelets (40) qui s'étendent transversalement par rapport aux bords de pliage (26) du milieu filtrant (14) et qui provoquent, dans un état de fonctionnement du soufflet de filtre (12) conforme à sa destination, un écoulement d'au moins une partie du fluide perpendiculairement aux bords de pliage (26) du soufflet (12) de filtre, les bourrelets comprenant respectivement au moins une première couche (42) et une deuxième couche (44) superposée à celle-ci. L'invention concerne en outre l'utilisation de l'élément formant filtre (10) comme élément formant filtre rond, en particulier comme élément formant filtre rond d'un moteur à combustion interne, ainsi qu'un procédé pour la fabrication d'un élément (10) formant filtre et une installation pour la fabrication d'un élément (10) formant filtre.
PCT/EP2015/071594 2014-09-25 2015-09-21 Élément formant filtre pourvu d'un soufflet de filtre WO2016046127A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112015004381.0T DE112015004381A5 (de) 2014-09-25 2015-09-21 Filterelement mit Filterbalg
CN201580051916.2A CN106714935A (zh) 2014-09-25 2015-09-21 具有过滤波纹包的过滤元件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014014008.3 2014-09-25
DE102014014008.3A DE102014014008A1 (de) 2014-09-25 2014-09-25 Filterelement mit Filterbalg

Publications (1)

Publication Number Publication Date
WO2016046127A1 true WO2016046127A1 (fr) 2016-03-31

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Application Number Title Priority Date Filing Date
PCT/EP2015/071594 WO2016046127A1 (fr) 2014-09-25 2015-09-21 Élément formant filtre pourvu d'un soufflet de filtre

Country Status (3)

Country Link
CN (1) CN106714935A (fr)
DE (2) DE102014014008A1 (fr)
WO (1) WO2016046127A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109603357A (zh) * 2019-01-25 2019-04-12 山西新华化工有限责任公司 滤毒罐用异形净化单元制作方法
CN110448973B (zh) * 2019-08-07 2021-09-17 九江七所精密机电科技有限公司 一种锥形筒式空气滤芯及其制作工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2034670A1 (de) * 1970-07-13 1972-01-27 Purolator Filter GmbH, 7110 Ohnngen Filter, insbesondere fur Verbrennungs kraftmaschinen mit einem zickzackförmig gefalteten Filterpapierstreifen
GB1277588A (en) * 1968-12-13 1972-06-14 Marshall D A G Improvements in or relating to the manufacture of pleated filtering material
DE4345122A1 (de) * 1993-12-30 1995-07-06 Detroit Holding Ltd Verfahren zur Herstellung eines Filtereinsatzes
JP2003284914A (ja) * 2002-03-28 2003-10-07 Nippon Muki Co Ltd ジグザグ状エアフィルタ用濾材及びその製造方法
JP2004321937A (ja) * 2003-04-24 2004-11-18 Nippon Air Filter Kk 折込み型エアフィルタ及びその製造方法
JP2007098233A (ja) * 2005-09-30 2007-04-19 Nippon Muki Co Ltd ジグザグ状エアフィルタ用濾材およびエアフィルタ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252207A (en) 1988-06-15 1993-10-12 Pall Corporation Wrap member having openings
DE4038966A1 (de) * 1990-12-06 1992-06-11 Hengst Walter Gmbh & Co Kg Filterelement, bestehend aus einem in falten gelegten filtermedium
ES2298098T1 (es) * 2004-06-24 2008-05-16 Camfil Farr, Inc. Filtro de aire con pliegues, dotado de limpieza pulsante inversa de la corriente de aire.
US7235115B2 (en) * 2004-07-09 2007-06-26 3M Innovative Properties Company Method of forming self-supporting pleated filter media
DE102011113649A1 (de) * 2011-09-19 2013-03-21 Mann + Hummel Gmbh Filterelement, Vorrichtung zum Falten eines bahnförmigen Filtermediums und Verfahren zur Herstellung eines zickzackförmig gefalteten Filterelements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277588A (en) * 1968-12-13 1972-06-14 Marshall D A G Improvements in or relating to the manufacture of pleated filtering material
DE2034670A1 (de) * 1970-07-13 1972-01-27 Purolator Filter GmbH, 7110 Ohnngen Filter, insbesondere fur Verbrennungs kraftmaschinen mit einem zickzackförmig gefalteten Filterpapierstreifen
DE4345122A1 (de) * 1993-12-30 1995-07-06 Detroit Holding Ltd Verfahren zur Herstellung eines Filtereinsatzes
JP2003284914A (ja) * 2002-03-28 2003-10-07 Nippon Muki Co Ltd ジグザグ状エアフィルタ用濾材及びその製造方法
JP2004321937A (ja) * 2003-04-24 2004-11-18 Nippon Air Filter Kk 折込み型エアフィルタ及びその製造方法
JP2007098233A (ja) * 2005-09-30 2007-04-19 Nippon Muki Co Ltd ジグザグ状エアフィルタ用濾材およびエアフィルタ

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DE112015004381A5 (de) 2017-06-08
DE102014014008A1 (de) 2016-03-31
CN106714935A (zh) 2017-05-24

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