EP3463614A1 - Procédé de fabrication d'un milieu filtrant et milieu filtrant - Google Patents

Procédé de fabrication d'un milieu filtrant et milieu filtrant

Info

Publication number
EP3463614A1
EP3463614A1 EP17730692.5A EP17730692A EP3463614A1 EP 3463614 A1 EP3463614 A1 EP 3463614A1 EP 17730692 A EP17730692 A EP 17730692A EP 3463614 A1 EP3463614 A1 EP 3463614A1
Authority
EP
European Patent Office
Prior art keywords
filter
joining
filter layers
joined together
geometry
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.)
Withdrawn
Application number
EP17730692.5A
Other languages
German (de)
English (en)
Inventor
Ralf Disson
Hartmut Harr
Hannes LAY
Bernd Neubauer
Birgit Renz
Markus Steppe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3463614A1 publication Critical patent/EP3463614A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard

Definitions

  • the invention relates to a method for producing a filter medium and a filter medium which is produced by means of this method.
  • filter systems for filtering fresh air and liquids such as oil, fuel or coolant are needed.
  • contamination with dirt particles or similar To prevent a suitable filter medium is required.
  • Modern filter media generally consist of a plurality of filter layers and have spacer elements, also known to those skilled in the art as so-called "cams.” Said spacer elements ensure that the filter layers are arranged at a distance from one another in some regions. The said spacer elements prevent at an applied fluid pressure to the undesired blocking of the filter folds formed in the filter medium.
  • spacer elements for instance in the form of a groove structure, into already attached filter media takes place either in a further process step or, alternatively, after the joining process and immediately before the joining process. tion of the filter medium.
  • DE 10 2006 062 189 B4 discloses a method for producing a 3-dimensional, facet-structured material web.
  • a material web is provided with a multi-dimensional structuring in a primary production step and provided with depressions and folds.
  • the wells are partially supported on their concave side by each converging to a point of view support elements.
  • a pressure medium is pressed against the concave side of the troughs, and an active medium presses against the convex side of the troughs.
  • the surface quality of the spatially facet-structured material web is retained in this way.
  • the at least two filter layers each have at least one section in which they are not joined together by means of the thermoplastic fibers. This allows a particularly flexible attachment of the at least two filter layers together.
  • At least one first filter layer is provided for carrying out the method, which has a plurality of thermoplastic fibers which are heated before and / or during the joining.
  • the thermoplastic fibers are softened by heating and / or at least partially melted. In this way, a cohesive connection in the form of an adhesive bond can be generated in a simple manner between the first filter layer in the region of the thermoplastic fibers and the second filter layers.
  • the fibers provided in the first filter layer are formed as thermoplastic fibers which can be deformed by means of a heating device.
  • a heating device allows a particularly homogeneous joining process.
  • said heater may be part of a joining tool for joining the two filter layers together.
  • This variant allows heating / heating of the fibers of the first filter layer before and / or during the attachment. nanderfugens using the joining tool. In this way, a particularly good cohesive connection or adhesive bond between the fibers of the first filter layer and the at least one further filter layer is achieved.
  • both filter layers ie both joining partners, have thermoplastic fibers. In this way, a particularly stable connection between the two filter layers can be generated.
  • At least one filter layer may comprise additional, non-thermoplastic fibers. These fibers remain unaffected by the actual joining process and can thus provide improved strength of the at least one filter layer both before and after the joining process.
  • a pressing tool is used as the joining tool for joining the at least two filter layers together.
  • a pressing tool which may comprise rollers acting as pressure rollers, it is possible to press the at least two filter layers together.
  • the at least one first filter layer in the region of its joining zones is connected to the at least one further filter layer.
  • the first filter layer rests only on the second filter layer or, in a preferred embodiment, can also be arranged at a distance from the second filter layer.
  • the joining tool is designed such that in the region between the fibers when joining a predetermined distance geometry is generated.
  • the introduction of a special distance geometry in an additional process step can be omitted in this variant.
  • the at least two filter layers are joined together in one method step and arranged in the same method step in regions at a distance from each other. This measure allows a comparison with conventional methods considerably simplified production of the filter medium with two or more filter layers.
  • At least one, preferably web-like formed, additional joining region can be formed.
  • additional joining region the at least two filter layers are joined together.
  • Such an additional web-like joining area is preferably used to form a filter fold in a further method step.
  • the distance geometry generated by means of the joining train is a sinusoidal or trapezoidal geometry, or, alternatively, a groove-like geometry. All of these geometries have in common that they significantly improve the filter effect of the filter medium.
  • the joining tool comprises an ultrasound source, so that the at least two filter layers are joined together by the action of ultrasound.
  • an ultrasonic source for carrying out the method leads to the generation of a particularly permanent adhesive bond between the filter layers.
  • At least one second filter layer without thermoplastic fibers is provided, which has cellulose, in particular paper, and / or nanofibers as the layer material.
  • Such filter layer without thermoplastic ie by heating / heating fusible fibers, the Based on the aforementioned material systems are particularly easy to the fibers of the first filter layer available or materially, preferably with an adhesive bond, connectable to these.
  • the invention further relates to a filter medium having at least two filter layers, which are preferably produced by means of the method presented above.
  • the advantages explained above in connection with the method according to the invention are therefore also transferred to the filter medium according to the invention.
  • the two filter layers each have at least one portion in which they are not joined together by means of the thermoplastic fibers. This allows a particularly flexible attachment of the at least two filter layers together.
  • the at least two filter layers which are not joined together in the at least one section by means of the thermoplastically deformable fibers, have a predetermined distance geometry.
  • this predetermined distance geometry is a sinusoidal or trapezoidal or groove-like or cam-like geometry.
  • the filter medium is produced using the method according to the method presented above.
  • the above-explained advantages of the production method are therefore also transferred to the filter medium according to the invention.
  • FIG. 1 shows an illustration of the method according to the invention
  • FIG. 2 shows a first example of a filter medium produced by means of the method according to FIG. 1, FIG.
  • FIG. 3 shows a second example of a filter medium produced by means of the method according to FIG. 1,
  • FIG. 4 shows a third example of a filter medium produced by means of the method according to FIG. 1,
  • FIG. 5 shows a fourth example of a filter medium produced by means of the method according to FIG.
  • FIG. 1 shows a first filter layer 2a and a second filter layer 2b, from which a filter medium 1 according to the invention is produced while carrying out the method according to the invention. It is clear that in variants of the example also filter media 1 can be produced with more than just 2 filter layers 2a, 2b.
  • the first filter layer 2 a has a plurality of thermoplastic fibers 5. These thermoplastic fibers 5 are thus fibers which can be plastically deformed by heating by means of a suitable heating device 10.
  • the second filter layer 2b has no thermoplastic fibers and can comprise as layer material cellulose, in particular paper, and / or nanofibers.
  • the first filter layer 2a in addition to the fibers 5 as a layer material cellulose, in particular paper, and / or nanofibers.
  • the second filter layer 2b in a manner analogous to the filter layer 2a, fibers 5 (not shown in Figure 1).
  • the method described here is characterized in that the two filter layers 2a, 2b are joined together in a single, common method step and are arranged in regions at a distance from each other.
  • the joining of the two filter layers 2a, 2b to each other takes place in a plurality of common joining sections 3, which are defined by the position of the joining roller / roller webs.
  • the two filter layers 2a, 2b are arranged in regions 4 between adjacent joining zones 3 at a distance from each other.
  • the plurality of fibers 5 in the first filter layer 2a is heated by means of the heating device 10. With such a heating is a softening and / or at least partially melting of the fibers 5 in the first filter layer 2a accompanied.
  • the first filter layer 2a in the region of the fibers 5, that is to say in the region of the joining zones 3 with the formation of an adhesive bond, that is to say materially bonded can be joined to the second filter layers 2b.
  • the joining of the two filter layers 2a, 2b takes place by means of a joining tool 11, which in the example of FIG. 1 is designed as a pressing tool 12 and comprises two rollers 13a, 13b.
  • a joining tool 11 which in the example of FIG. 1 is designed as a pressing tool 12 and comprises two rollers 13a, 13b.
  • the pressing tool 12 By means of the pressing tool 12, the two filter layers 2 a, 2 b are pressed against one another such that the first filter layer 2 a is pressed in the region of its thermoplastic fibers 5 with the second filter layer 2 b and thus joined together in a material-locking manner. In areas 4 between the fibers 5 of the first filter layer 2a, however, no cohesive connection is formed.
  • the two filter layers 2a, 2b are initially arranged on each other and guided by a rotational movement of the two rollers 13a, 13b along a joining direction R by a space 14 formed between the two rollers 13a, 13b.
  • said intermediate space 14 the actual joining takes place by means of pressing.
  • the heating device 10 may be integrated into the two rollers 13 a, 13 b of the pressing tool 12.
  • the heater 10 may be formed as an electric heater, which is indicated schematically in Figure 1.
  • the heating device 10 is thus part of the joining tool 11.
  • the provision of a separate heating device in the form of a suitable heating furnace is conceivable, which is arranged immediately adjacent to the joining tool 1 1 (not It is also possible to irradiate the two filter layers 2a, 2b by means of heating radiation, so that they are heated as desired before joining them together.
  • the heating device 10 is formed as a radiant heat source, which is also located immediately adjacent to the joining tool 1 1 (not shown).
  • the heating device 1 regardless of their concrete technical realization form, integrated into the in the Fügewerkszug 1 1 and thus part of the joining tool 1 first
  • the rollers 13a, 13b of the pressing tool 12 and the joining tool 1 1 are designed such that in the produced filter medium 1 with the at least two filter layers 2a, 2b in the areas 4 between the fibers 5 when joining a predetermined distance geometry is generated.
  • This may be, for example, a trapezoidal geometry shown in FIG. 2 or a sinusoidal geometry illustrated in FIG.
  • the desired geometry can be determined by appropriate design of the outer peripheral sides 15a, 15b of the two rollers 13a, 13b.
  • sinusoidal or trapezoidal design other geometries are conceivable.
  • additional rollers 18a, 18b at least one, preferably web-like, additional joining region 16 can be formed in the at least two filter layers 2a, 2b.
  • the web-like additional execution area can also be integrated in the roller 15b.
  • a fold (not shown) of the filter medium 1 can later be formed in a further, optional process step.
  • FIG. 4 shows, as a further variant, two filter layers 2a, 2b with cam-like geometry, so that a plurality of cams 6-in the example of FIG. 4, only two such cams 6 are shown as an example-are arranged at a distance from one another.
  • the two filter layers 2 a, 2 b abut each other and are joined together in the region of the cams 6 by means of the thermoplastic fibers 5.
  • the filter layers 2a, 2b are not connected to one another in sections 7 between two cams 6, but lie against one another only.
  • the joint connection in the region of the cams 6 can take place flat over the entire respective cam 6, but also only in a pointwise or in sections over the area of the relevant cam 6.
  • FIG. 5 shows, as a further variant, two filter layers 2 a, 2 b, which are joined to one another by means of a grooving 8.
  • a groove-like geometry can be produced by providing a groove-like structure on the two outer peripheral sides 15a, 15b of the two rollers 13a, 13b.
  • Such so-called creasing rolls provide for the connection of the two filter layers 2a, 2b in the region of the creasing 8.
  • a joining connection does not necessarily have to be produced over the entire surface, but only selectively or in sections, in particular at the vertexes 9a and at the flanks 9b of the creasing 8. This results in a stiff, yet very flow-optimized fiber layer composite.
  • an ultrasonic source can also be used as the joining tool 1 1 as an alternative to the pressing tool 12 explained above.
  • the at least two filter layers 2a, 2b can be joined together in an analogous manner to the above-described use of a pressing tool 12 by ultrasound action and be arranged in regions at a distance from each other.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un milieu filtrant (1) comprenant au moins deux couches filtrantes (2a, 2b), procédé selon lequel au moins une première couche filtrante (2a), qui comporte une pluralité de fibres thermoplastiques (5), est jointe en certains endroits en une seule étape de procédé.
EP17730692.5A 2016-05-31 2017-05-30 Procédé de fabrication d'un milieu filtrant et milieu filtrant Withdrawn EP3463614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016209482.3A DE102016209482A1 (de) 2016-05-31 2016-05-31 Verfahren zur Herstellung eines Filtermediums sowie Filtermedium
PCT/EP2017/063002 WO2017207547A1 (fr) 2016-05-31 2017-05-30 Procédé de fabrication d'un milieu filtrant et milieu filtrant

Publications (1)

Publication Number Publication Date
EP3463614A1 true EP3463614A1 (fr) 2019-04-10

Family

ID=59070607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17730692.5A Withdrawn EP3463614A1 (fr) 2016-05-31 2017-05-30 Procédé de fabrication d'un milieu filtrant et milieu filtrant

Country Status (6)

Country Link
US (1) US20200023297A1 (fr)
EP (1) EP3463614A1 (fr)
CN (1) CN109195680A (fr)
BR (1) BR112018074116A2 (fr)
DE (1) DE102016209482A1 (fr)
WO (1) WO2017207547A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916838A1 (de) * 1989-05-19 1990-11-22 Lippold Hans Joachim Filtereinsatz
US5753343A (en) * 1992-08-04 1998-05-19 Minnesota Mining And Manufacturing Company Corrugated nonwoven webs of polymeric microfiber
DE69422032T2 (de) * 1993-04-01 2000-04-20 Minnesota Mining & Mfg Filterelement zur filtration von strömenden medien
DE19900424B4 (de) * 1999-01-08 2006-04-06 Carl Freudenberg Kg Dreidimensional strukturiertes Faserflächengebilde und Verfahren zur Herstellung
EP2279783A1 (fr) * 2001-12-08 2011-02-02 IBS Filtran Kunststoff-/Metallerzeugnisse GmbH Matériau filtrant composite à plusieurs couches pour filtration en série
DE102006000782A1 (de) * 2006-01-04 2007-07-05 Johnson & Johnson Gmbh Absorbierendes mehrlagiges Verbundvlies
CN103933785B (zh) * 2006-02-01 2016-07-27 东丽株式会社 过滤器用无纺布及其制造方法
DE102006062189B4 (de) 2006-12-22 2009-03-19 Dr. Mirtsch Gmbh Verfahren zum Herstellen einer strukturierten Materialbahn für das Durchströmen von fluiden Medien, strukturierte Materialbahn und Verwendung derselben
US8147583B2 (en) * 2007-06-08 2012-04-03 Gore Enterprise Holdings, Inc. Multiple layer filter media
DE102007027268A1 (de) * 2007-06-11 2008-12-18 Sandler Ag Filtermedium für die Luft- und Flüssigkeitsfiltration
JP2010221210A (ja) * 2009-02-27 2010-10-07 Sintokogio Ltd 表面濾過方式集塵機用帯電防止濾布
JP5842353B2 (ja) * 2010-04-13 2016-01-13 Jnc株式会社 嵩高性不織布

Also Published As

Publication number Publication date
WO2017207547A1 (fr) 2017-12-07
US20200023297A1 (en) 2020-01-23
BR112018074116A2 (pt) 2019-03-06
DE102016209482A1 (de) 2017-11-30
CN109195680A (zh) 2019-01-11

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