WO2011047966A1 - Filter material - Google Patents

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Publication number
WO2011047966A1
WO2011047966A1 PCT/EP2010/064993 EP2010064993W WO2011047966A1 WO 2011047966 A1 WO2011047966 A1 WO 2011047966A1 EP 2010064993 W EP2010064993 W EP 2010064993W WO 2011047966 A1 WO2011047966 A1 WO 2011047966A1
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WO
WIPO (PCT)
Prior art keywords
filter material
filter
carrier material
carrier
material according
Prior art date
Application number
PCT/EP2010/064993
Other languages
German (de)
French (fr)
Inventor
Bernd Neubauer
Birgit Renz
Markus Steppe
Ralf Disson
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 WO2011047966A1 publication Critical patent/WO2011047966A1/en

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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
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
    • 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
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/10—Multiple layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/10—Multiple layers
    • B01D2275/105—Wound layers

Definitions

  • the present invention relates to a filter material, in particular for an air filter, according to the preamble of claim 1.
  • a generic filter material consisting of at least one layer of filter-active material, which consists of at least 50% cellulose fibers and is provided with an impregnation.
  • the position of the filter-active material is covered on at least one side with a Kaschiermaterial that for each in the respective
  • a further filter material comprising at least one carrier material layer and at least one nonwoven fiber layer is known.
  • the at least one fiber fleece layer has a nanofiber nonwoven layer with an average fiber diameter of 10 to 1000 nanometers and further nanofiber-specific parameters.
  • the carrier material layer is constructed from a filter paper.
  • Filter material known, with a fiber layer, which is laminated together with a paper support layer.
  • the present invention addresses the problem of providing an improved or at least some other type of filter material of the generic type Specify embodiment, which in particular is more resilient, less flammable and moreover easier to process.
  • the present invention is based on the general idea
  • Carrier layer and a filter layer wherein a carrier material of the carrier layer is formed as a polymer fleece or cellulose or a mixture of a polymer and cellulose, while the material for the filter layer by
  • Nanofibers is formed.
  • the nanofibers can be made of any plastics, preferably of thermoplastics, such as.
  • PA polyamide
  • PA 66 PA 6 or PA 66
  • PU polyurethane
  • the nanofibers preferably have a fiber diameter smaller ⁇ , ⁇ on.
  • 90% of the nanofibers formed from polyamide have a diameter of less than 300 nm, in particular less than 250 nm.
  • over 70% of the nanofibers have a fiber diameter of less than 180nm.
  • more than 90% of the nanofibers formed of polyurethane have a diameter less than 500 nm.
  • more than 50% of the PU nanofibers have a
  • the filter material has a total thickness d between 0.15 and 0.4 mm, preferably ⁇ 0.35 mm.
  • Special filter materials have a thickness d of about 0.2mm. These materials are then particularly easy to process into star-shaped folded filter bellows or to compact wound filter elements with corrugated filter medium.
  • the filter material produced according to the invention which has a polymer fleece as carrier material, a higher load capacity, a higher elasticity and at the same time a higher elongation at break can be realized.
  • the carrier material ie in particular the carrier layer, particularly uniform be built, which was not possible with the use of previously known filter fabric.
  • the polymer fleece is thus a textile fabric made of individual fibers, which, for example, are laid dry or wet.
  • a so-called random web is used, in which the individual fibers are freely arranged with respect to their orientation.
  • the filter material according to the invention is for use in an air filter, in particular for the engine supply air of a
  • the carrier material polyester in particular PET, PBT, or a mixture thereof.
  • PET stands for polyethylene terephthalate.
  • PBT stands for
  • Polybutylene terephthalate and, like PET, belongs to the group
  • thermoplastic plastics Both plastics have a polar structure and therefore have strong intermolecular forces, which ensure high resistance to breakage and stiffness, as well as high dimensional stability. Furthermore, they also have good chemical resistance as well as good
  • Polyester in particular PBT and PET
  • PET on the one hand can be used inexpensively and, on the other hand, can be handled with ease of manufacture.
  • a carrier material of polyamide for example PA6 or PA66
  • PA6 or PA66 of a polymer of acrylonitrile, for example polyacrylonitrile (PAN)
  • PAN polyacrylonitrile
  • the carrier material has sheathed fibers, in particular also bicomponent fibers.
  • the individual, the individual, the carrier material has sheathed fibers, in particular also bicomponent fibers.
  • Substrate-forming fibers not only from a single material, for example. PET, be made, but also bi- or multi-component materials include, in particular fibers are to be understood, which are composed of several material components.
  • the Staudogen-containing fibers are to be understood, which are composed of several material components.
  • the Staudogen-containing fibers are to be understood, which are composed of several material components.
  • the Staudogen-containing fibers are to be made, which are composed of several material components.
  • the Staumatehal is formed as a spunbond.
  • a spunbond is generally understood to mean a spunbonded fabric in which, for example, a polymer is heated in an extruder and brought to a high pressure. The polymer is then in exact dosage by means of spinning pumps through a die, the so-called.
  • the polymer exits from the nozzle plate as a fine filament in molten form and is then cooled by a stream of air.
  • a stream of air On an adjoining conveyor belt, which is designed as a sieve, and in which a suction is arranged under the sieve, the individual threads are fixed and there is a so-called.
  • Impact fleece which then still has to be solidified.
  • the solidification can be done in particular by two heated rollers (calender) or by a vapor stream.
  • calender heated rollers
  • vapor stream By a partial fusion of the individual filament fibers together creates a nonwoven with the desired strength.
  • a particularly uniform distribution of basis weights and thus a particularly homogeneous carrier material can be achieved with a carrier material designed as a spunbond.
  • the nanofibers adhesively adhere to the carrier material or are glued to it.
  • a major feature of adhesion is that of molecular
  • Implement filter material can be influenced directly by such an adhesive filter effect.
  • the nanofibers can be arranged on the carrier material on the raw side and / or on the clean side. In a pure-side arrangement would thus be a
  • the present invention is based on the idea of producing a wound filter, in particular for an air filter, with such a filter material designed according to the invention. Due to the very small thickness of the individual filter material layers, as well as the use of a
  • Polymer material for the carrier material such wound air filter can be easily produced and also easy to process, since by means of a
  • Filter material is not limited to air filters, but can generally be transferred to other gas or liquid filters.

Abstract

The present invention relates to a filter material, in particular for an air filter. It is essential to the invention that the filter material comprises a polymer nonwoven fabric or cellulose or a mixture thereof as carrier material having nanofibers applied thereto, and that the filter material comprises a thickness (d) of 0.15 < d < 0.35 mm, preferably a thickness (d) of approximately 0.2 mm.

Description

Filtermaterial  filter material
Die vorliegende Erfindung betrifft ein Filtermatenal, insbesondere für einen Luftfilter, gemäß dem Oberbegriff des Anspruchs 1 . The present invention relates to a filter material, in particular for an air filter, according to the preamble of claim 1.
Aus der DE 101 50 073 A1 ist ein gattungsgemäßes Filtermaterial bekannt, bestehend aus zumindest einer Lage filteraktiven Materials, welches zu wenigstens 50% aus Zellulosefasern besteht und mit einer Imprägnierung versehen ist. Die Lage des filteraktiven Materials ist dabei auf mindestens einer Seite mit einem Kaschiermaterial bedeckt, das für den im jeweiligen From DE 101 50 073 A1 a generic filter material is known, consisting of at least one layer of filter-active material, which consists of at least 50% cellulose fibers and is provided with an impregnation. The position of the filter-active material is covered on at least one side with a Kaschiermaterial that for each in the respective
Filtrationsprozess relevanten Partikelgrößenbereich keine Filtrationswirkung aufweist. Aufgrund des 50%-igen Zellulosefaseranteils ist das bekannte Filtration process relevant particle size range has no filtration effect. Due to the 50% cellulose fiber content is the well-known
Filtermaterial jedoch leicht entflammbar. Filter material, however, easily inflammable.
Aus der DE 299 07 699 U1 ist ein weiteres Filtermaterial, umfassend mindestens eine Trägermateriallage und mindestens eine Faservlieslage, bekannt. Die mindestens eine Faservlieslage weist dabei eine Nanofaservlieslage mit einem durchschnittlichen Faserdurchmesser von 10 bis 1000 Nanometer und weiteren nanofaserspezifischen Parametern auf. Die Trägermateriallage ist dabei aus einem Filterpapier aufgebaut. From DE 299 07 699 U1 a further filter material comprising at least one carrier material layer and at least one nonwoven fiber layer is known. The at least one fiber fleece layer has a nanofiber nonwoven layer with an average fiber diameter of 10 to 1000 nanometers and further nanofiber-specific parameters. The carrier material layer is constructed from a filter paper.
Aus der DE 197 31 860 C1 ist wiederum ein mehrschichtig aufgebautes From DE 197 31 860 C1 in turn is a multi-layered structure
Filtermaterial bekannt, mit einer Faserschicht, die mit einer Papierträgerschicht zusammen laminiert ist. Filter material known, with a fiber layer, which is laminated together with a paper support layer.
Weitere Filtermaterialien sind bspw. aus der DE 198 20 918 A1 , aus der DE 197 19 807 A1 , aus der EP 0 626 187 A1 , aus der EP 0 656 224 A1 sowie aus der DE 102 00 635 A1 bekannt. Further filter materials are known, for example, from DE 198 20 918 A1, from DE 197 19 807 A1, from EP 0 626 187 A1, from EP 0 656 224 A1 and from DE 102 00 635 A1.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für ein Filtermaterial der gattungsgemäßen Art eine verbesserte oder zumindest eine andere Ausführungsform anzugeben, welche insbesondere belastbarer, schwerer entflammbar und darüber hinaus einfacher verarbeitbar ist. The present invention addresses the problem of providing an improved or at least some other type of filter material of the generic type Specify embodiment, which in particular is more resilient, less flammable and moreover easier to process.
Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche. This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.
Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, ein The present invention is based on the general idea
Filtermaterial zumindest zweischichtig aufzubauen, nämlich aus einer Build filter material at least two layers, namely from a
Trägerschicht und einer Filterschicht, wobei ein Trägermaterial der Trägerschicht als Polymervlies oder Zellulose oder einer Mischung aus einem Polymer und Zellulose ausgebildet ist, während das Material für die Filterschicht durch Carrier layer and a filter layer, wherein a carrier material of the carrier layer is formed as a polymer fleece or cellulose or a mixture of a polymer and cellulose, while the material for the filter layer by
Nanofasern gebildet wird. Die Nanofasern können aus beliebigen Kunststoffen, bevorzugt aus Thermoplasten, wie z. B. Polyamid (PA), insbesondere PA 6 oder PA 66, oder aus Polyurethan (PU), gebildet werden. Die Nanofasern weisen vorzugsweise einen Faserdurchmesser kleiner Ο,δμιτι auf. Vorzugsweise verfügen 90% der aus Polyamid gebildeten Nanofasern über einen Durchmesser kleiner 300nm, insbesondere kleiner 250nm. Bei vorteilhaften Ausbildungen verfügen über 70% der Nanofasern über einen Faserdurchmesser von weniger als 180nm. Bei anderen Ausgestaltungen verfügen mehr als 90% der aus Polyurethan gebildeten Nanofasern über einen Durchmesser kleiner 500nm. In vorteilhaften Ausgestaltungen verfügen mehr als 50% der PU-Nanofasern über einen Nanofibers is formed. The nanofibers can be made of any plastics, preferably of thermoplastics, such as. As polyamide (PA), in particular PA 6 or PA 66, or polyurethane (PU) are formed. The nanofibers preferably have a fiber diameter smaller Ο, δμιτι on. Preferably, 90% of the nanofibers formed from polyamide have a diameter of less than 300 nm, in particular less than 250 nm. In advantageous embodiments, over 70% of the nanofibers have a fiber diameter of less than 180nm. In other embodiments, more than 90% of the nanofibers formed of polyurethane have a diameter less than 500 nm. In advantageous embodiments, more than 50% of the PU nanofibers have a
Faserdurchmesser kleiner 400nm. Das Filtermaterial weist dabei insgesamt eine Dicke d zwischen 0,15 und 0,4mm, vorzugsweise <0,35mm auf. Besondere Filtermaterialien verfügen über eine Dicke d von ca. 0,2mm auf. Diese Materialien sind dann besonders gut verarbeitbar zu sternförmig gefalteten Filterbälgen oder zu kompakten gewickelten Filterelementen mit gewelltem Filtermedium. Mit dem erfindungsgemäß hergestellten Filtermaterial, welches ein Polymervlies als Trägermaterial aufweist, können eine höhere Belastbarkeit, eine höhere Elastizität und gleichzeitig eine höhere Bruchdehnung realisiert werden. Gleichzeitig kann das Trägermaterial, d. h. insbesondere die Trägerschicht, besonders gleichmäßig aufgebaut werden, was bei der Verwendung von bisher bekannten Filtervlies nicht möglich war. Das Polymervlies ist somit ein textiles Flächengebilde aus einzelnen Fasern, welche bspw. trocken oder nass gelegt sind. Vorzugsweise wird dabei ein sog. Wirrlagenvlies eingesetzt, bei welchem die einzelnen Fasern hinsichtlich ihrer Orientierung frei angeordnet sind. Das erfindungsgemäße Filtermaterial ist für die Verwendung in einem Luftfilter, insbesondere für die Motor-Zuluft eines Fiber diameter less than 400nm. The filter material has a total thickness d between 0.15 and 0.4 mm, preferably <0.35 mm. Special filter materials have a thickness d of about 0.2mm. These materials are then particularly easy to process into star-shaped folded filter bellows or to compact wound filter elements with corrugated filter medium. With the filter material produced according to the invention, which has a polymer fleece as carrier material, a higher load capacity, a higher elasticity and at the same time a higher elongation at break can be realized. At the same time, the carrier material, ie in particular the carrier layer, particularly uniform be built, which was not possible with the use of previously known filter fabric. The polymer fleece is thus a textile fabric made of individual fibers, which, for example, are laid dry or wet. Preferably, a so-called random web is used, in which the individual fibers are freely arranged with respect to their orientation. The filter material according to the invention is for use in an air filter, in particular for the engine supply air of a
Automobils geeignet. Automobile suitable.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, weist das Trägermaterial Polyester, insbesondere PET, PBT, oder eine Mischung daraus auf. PET steht dabei für Polyethylenterephthalat. PBTsteht für In an advantageous development of the solution according to the invention, the carrier material polyester, in particular PET, PBT, or a mixture thereof. PET stands for polyethylene terephthalate. PBT stands for
Polybutylenterephthalat und gehört, wie PET auch, zu der Gruppe Polybutylene terephthalate and, like PET, belongs to the group
thermoplastischer Kunststoffe. Beide Kunststoffe sind polar aufgebaut und besitzen dadurch starke zwischenmolekulare Kräfte, die eine hohe Bruchfestigkeit und Steifigkeit, sowie eine hohe Formbeständigkeit gewährleisten. Weiterhin besitzen sie auch eine gute chemische Widerstandsfähigkeit sowie gute thermoplastic plastics. Both plastics have a polar structure and therefore have strong intermolecular forces, which ensure high resistance to breakage and stiffness, as well as high dimensional stability. Furthermore, they also have good chemical resistance as well as good
Verschleißeigenschaften. Polyester, insbesondere PBT und PET können einerseits kostengünstig und andererseits fertigungstechnisch leicht handhabbar eingesetzt werden. Denkbar wäre aber auch ein Trägermaterial aus Polyamid, beispielsweise PA6 oder PA66, aus einem Polymer von Acrylnitril, beispielsweise Polyacrylnitril (PAN), aus vollsynthetischen Materialien oder aus Papier mit Zellulose denkbar. Wear properties. Polyester, in particular PBT and PET, on the one hand can be used inexpensively and, on the other hand, can be handled with ease of manufacture. However, it would also be conceivable to use a carrier material of polyamide, for example PA6 or PA66, of a polymer of acrylonitrile, for example polyacrylonitrile (PAN), of fully synthetic materials or of paper with cellulose.
Zweckmäßig weist das Trägermaterial ummantelte Fasern, insbesondere auch Bikomponentenfasern, auf. Selbstverständlich können die einzelnen, das Expediently, the carrier material has sheathed fibers, in particular also bicomponent fibers. Of course, the individual, the
Trägermaterial bildenden Fasern, nicht nur aus einem einzigen Werkstoff, bspw. PET, hergestellt sein, sondern auch Bi- oder Mehrkomponenten-Werkstoffe umfassen, worunter insbesondere Fasern zu verstehen sind, welche aus mehreren Materialkomponenten aufgebaut sind. Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung, ist das Trägermatehal als Spunbond ausgebildet. Unter einem Spunbond versteht man allgemein ein Spinnvlies, bei welchem bspw. ein Polymer in einem Extruder erhitzt und auf einen hohen Druck gebracht wird. Das Polymer wird anschließend in genauer Dosierung mittels Spinnpumpen durch eine Matrize, die sog. Substrate-forming fibers, not only from a single material, for example. PET, be made, but also bi- or multi-component materials include, in particular fibers are to be understood, which are composed of several material components. In a further advantageous embodiment of the solution according to the invention, the Trägermatehal is formed as a spunbond. A spunbond is generally understood to mean a spunbonded fabric in which, for example, a polymer is heated in an extruder and brought to a high pressure. The polymer is then in exact dosage by means of spinning pumps through a die, the so-called.
Spinndüsen, gepresst. Das Polymer tritt aus der Düsenplatte als feiner Faden (Filament) noch in geschmolzener Form aus und wird anschließend durch einen Luftstrom abgekühlt. Auf einem sich daran anschließenden Förderband, welches als Sieb ausgebildet ist, und bei welchem eine Absaugung unter dem Sieb angeordnet ist, werden die einzelnen Fäden fixiert und es entsteht ein sog. Spinnerets, pressed. The polymer exits from the nozzle plate as a fine filament in molten form and is then cooled by a stream of air. On an adjoining conveyor belt, which is designed as a sieve, and in which a suction is arranged under the sieve, the individual threads are fixed and there is a so-called.
Wirrlagenvlies, das anschließend noch verfestigt werden muss. Die Verfestigung kann dabei insbesondere durch zwei beheizte Walzen (Kalander) oder durch einen Dampfstrom erfolgen. Durch eine bereichsweise Verschmelzung der einzelnen Filamentfasern miteinander entsteht ein Vlies mit der gewünschten Festigkeit. Generell kann mit einem als Spunbond ausgebildeten Trägermaterial eine besonders gleichmäßige Verteilung von Flächengewichten und damit ein besonders homogenes Trägermaterial erreicht werden. Impact fleece, which then still has to be solidified. The solidification can be done in particular by two heated rollers (calender) or by a vapor stream. By a partial fusion of the individual filament fibers together creates a nonwoven with the desired strength. In general, a particularly uniform distribution of basis weights and thus a particularly homogeneous carrier material can be achieved with a carrier material designed as a spunbond.
Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung, haften die Nanofasern adhäsiv auf dem Trägermaterial oder sind mit diesem verklebt. Eine Haupteigenschaft der Adhäsion ist der durch molekulare In a further advantageous embodiment of the solution according to the invention, the nanofibers adhesively adhere to the carrier material or are glued to it. A major feature of adhesion is that of molecular
Wechselwirkungen in der Grenzflächenschicht hervorgerufene mechanische Zusammenhalt der beteiligten Materialien. Lediglich aufgrund von Adhäsion anhaftende Nanofasern kann eine zusätzliche Klebeschicht vermieden werden, was sich bspw. Kosten reduzierend auf den Herstellungsprozess des Interactions in the interface layer caused mechanical cohesion of the materials involved. Only on account of adhesion adherent nanofibers, an additional adhesive layer can be avoided, which, for example, reducing costs on the manufacturing process of
erfindungsgemäßen Filtermaterials auswirkt. Bei dem Vorsehen eines Klebers zur Verbindung der Nanofasern mit dem Trägermaterial ist es jedoch je nach filter material according to the invention. However, in providing an adhesive for bonding the nanofibers to the substrate, it is depending on
Ausführung des Klebers möglich, über diesen zusätzliche Eigenschaften im Execution of the glue possible over these additional characteristics in the
Filtermaterial zu implementieren. Bspw. kann durch einen derartigen Kleber die Filterwirkung direkt beeinflusst werden. Generell gilt, dass die Nanofasern rohseitig und/oder reinseitig am Trägermaterial angeordnet sein können. Bei einer reinseitigen Anordnung wäre somit eine Implement filter material. For example. can be influenced directly by such an adhesive filter effect. In general, the nanofibers can be arranged on the carrier material on the raw side and / or on the clean side. In a pure-side arrangement would thus be a
Gradientenstruktur vorhanden und es würde keine reine Oberflächenfiltration mehr vorliegen. Gradient structure available and there would be no more pure surface filtration.
Die vorliegende Erfindung beruht abschließend auch auf dem Gedanken, mit einem derartigen erfindungsgemäß ausgeführten Filtermaterial einen Wickelfilter, insbesondere für einen Luftfilter, herzustellen. Aufgrund der sehr geringen Dicke der einzelnen Filtermateriallagen, sowie der Verwendung eines Finally, the present invention is based on the idea of producing a wound filter, in particular for an air filter, with such a filter material designed according to the invention. Due to the very small thickness of the individual filter material layers, as well as the use of a
Polymerwerkstoffes für das Trägermaterial, lassen sich derartige gewickelte Luftfilter einfach herstellen und auch leicht verarbeiten, da mittels einer Polymer material for the carrier material, such wound air filter can be easily produced and also easy to process, since by means of a
entsprechenden Erwärmung eine Verschweißung des Filtermaterials erfolgen kann. Selbstverständlich ist dabei die Anwendung des erfindungsgemäßen corresponding heating a welding of the filter material can be done. Of course, the application of the invention is
Filtermaterials nicht nur auf Luftfilter beschränkt, sondern kann generell auch auf weitere Gas- oder Flüssigkeitsfilter übertragen werden. Filter material is not limited to air filters, but can generally be transferred to other gas or liquid filters.

Claims

Patentansprüche claims
1 . Filtermaterial, insbesondere für ein Luftfilter, 1 . Filter material, in particular for an air filter,
dadurch gekennzeichnet,  characterized,
- dass das Filtermaterial ein Trägermaterial mit darauf aufgebrachten  - That the filter material is a carrier material with applied thereto
Nanofasern aufweist,  Having nanofibers,
- dass das Filtermaterial eine Dicke (d) von 0,15 < d < 0,35 mm,  that the filter material has a thickness (d) of 0.15 <d <0.35 mm,
vorzugsweise eine Dicke (d) von ca. 0,2 mm, aufweist.  preferably has a thickness (d) of about 0.2 mm.
2. Filtermaterial nach Anspruch 1 , 2. Filter material according to claim 1,
dadurch gekennzeichnet,  characterized,
- dass das Trägermaterial ein Polymervlies aufweist,  that the carrier material comprises a polymer fleece,
- wobei das Trägermaterial Polyester, insbesondere  - Where the carrier material is polyester, in particular
Polyethylenterephthalat (PET) und/oder Polybutylenterephthalat (PBT) aufweist, oder  Polyethylene terephthalate (PET) and / or polybutylene terephthalate (PBT), or
- wobei das Trägermaterial Polyamid, beispielsweise PA6, oder ein  - Where the carrier material polyamide, for example PA6, or a
Polymer von Acrylnitril, beispielsweise Polyacrylnitril (PAN), aufweist.  Polymer of acrylonitrile, for example polyacrylonitrile (PAN).
3. Filtermaterial nach Anspruch 1 , 3. Filter material according to claim 1,
dadurch gekennzeichnet,  characterized,
dass das Trägermaterial Zellulose, insbesondere glattes Papier oder gerilltes Papier mit einer Dicke von ca. 0,35mm aufweist.  the carrier material comprises cellulose, in particular smooth paper or grooved paper with a thickness of about 0.35 mm.
4. Filtermaterial nach einem der Ansprüche 1 bis 3, 4. Filter material according to one of claims 1 to 3,
dadurch gekennzeichnet,  characterized,
dass das Trägermaterial ummantelte Fasern aufweist.  in that the carrier material comprises sheathed fibers.
5. Filtermaterial nach einem der Ansprüche 1 bis 4, 5. Filter material according to one of claims 1 to 4,
dadurch gekennzeichnet,  characterized,
dass das Trägermaterial als Spunbond ausgebildet ist. that the carrier material is formed as a spunbond.
6. Filtermaterial nach einem der Ansprüche 1 bis 5, 6. Filter material according to one of claims 1 to 5,
dadurch gekennzeichnet,  characterized,
dass das Filtermaterial schwerentflammbar ist.  that the filter material is flame retardant.
7. Filtermaterial nach einem der Ansprüche 1 bis 6, 7. Filter material according to one of claims 1 to 6,
dadurch gekennzeichnet,  characterized,
dass eine Luftdurchlässigkeit des Filtermaterials von 600 - 1200l/m2s, insbesondere ca. 770 l/m2s, beträgt. that an air permeability of the filter material of 600 - 1200l / m 2 s, in particular about 770 l / m 2 s, is.
8. Filtermaterial nach einem der Ansprüche 3 bis 7, 8. Filter material according to one of claims 3 to 7,
dadurch gekennzeichnet,  characterized,
dass eine Luftdurchlässigkeit des Zellulose aufweisenden Trägermaterials zwischen 500 und 1 .000 l/m2s liegt. an air permeability of the cellulose-containing carrier material is between 500 and 1, 000 l / m 2 s.
9. Filtermaterial nach einem der Ansprüche 1 bis 8, 9. Filter material according to one of claims 1 to 8,
dadurch gekennzeichnet,  characterized,
dass die Nanofasern adhäsiv auf dem Trägermaterial haften oder mit diesem verklebt sind, und/oder  that the nanofibers adhesively adhere or are glued to the carrier material, and / or
dass die Nanofasern rohseitig und/oder reinseitig am Trägermaterial angeordnet sind.  the nanofibers are arranged on the carrier material on the raw side and / or on the clean side.
10. Wickelfilter mit einem Filtermaterial nach einem der Ansprüche 1 bis 9. 10. wound filter with a filter material according to one of claims 1 to 9.
PCT/EP2010/064993 2009-10-23 2010-10-07 Filter material WO2011047966A1 (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8148278B2 (en) 2003-06-19 2012-04-03 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8178199B2 (en) 2003-06-19 2012-05-15 Eastman Chemical Company Nonwovens produced from multicomponent fibers
US8216953B2 (en) 2003-06-19 2012-07-10 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8512519B2 (en) 2009-04-24 2013-08-20 Eastman Chemical Company Sulfopolyesters for paper strength and process
US8840758B2 (en) 2012-01-31 2014-09-23 Eastman Chemical Company Processes to produce short cut microfibers
DE102013221340A1 (en) * 2013-10-21 2015-04-23 Mahle International Gmbh Filter material, filter element and manufacturing process
US9273417B2 (en) 2010-10-21 2016-03-01 Eastman Chemical Company Wet-Laid process to produce a bound nonwoven article
DE102015002672A1 (en) * 2015-03-03 2016-09-08 Mann + Hummel Gmbh Filter medium and filter element with a filter medium
US9598802B2 (en) 2013-12-17 2017-03-21 Eastman Chemical Company Ultrafiltration process for producing a sulfopolyester concentrate
US9605126B2 (en) 2013-12-17 2017-03-28 Eastman Chemical Company Ultrafiltration process for the recovery of concentrated sulfopolyester dispersion
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626187A1 (en) 1993-05-26 1994-11-30 Chisso Corporation A filtering medium and a process for producing the same
EP0656224A1 (en) 1993-12-01 1995-06-07 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Filter material
DE19719807A1 (en) 1997-05-13 1998-11-19 Bayer Ag Heat sealable filter material with biodegradable polymers
DE19820918A1 (en) 1997-05-16 1998-11-19 Upf Corp N D Ges D Staates Kal Self-supporting pleated filter composite and process for its manufacture
DE19731860C1 (en) 1997-07-24 1999-01-28 Freudenberg Carl Fa Dust filter bag
DE29907699U1 (en) 1999-04-30 1999-08-05 Fibermark Gessner Gmbh & Co Dust filter bag containing nanofiber fleece
DE10150073A1 (en) 2001-10-10 2003-04-24 Mann & Hummel Filter Multiple layer filter medium used in pleated filters for filtering air, oil, fuel and water comprises a layer of filter-active material made from cellulose fibers and provided with an impregnation covered with a laminated material
DE10200635A1 (en) 2002-01-10 2003-07-24 Mann & Hummel Filter filter element
US20040065195A1 (en) * 2002-10-08 2004-04-08 Gogins Mark A. Motor vehicle filter structure having visual indicator of useful life
EP1970111A1 (en) * 2007-03-05 2008-09-17 BHA Group, Inc Composite filter media and methods of manufacture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6746517B2 (en) * 2000-09-05 2004-06-08 Donaldson Company, Inc. Filter structure with two or more layers of fine fiber having extended useful service life
DE202004009899U1 (en) * 2004-06-23 2004-09-30 Hengst Gmbh & Co.Kg Electrical apparatus includes filter comprising medium whose pores filter out particles in fluid flow, and carrier coating
DE102007027299B4 (en) * 2007-06-11 2009-02-26 Johns Manville Europe Gmbh Filter, process for its production, its use and filter modules

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626187A1 (en) 1993-05-26 1994-11-30 Chisso Corporation A filtering medium and a process for producing the same
EP0656224A1 (en) 1993-12-01 1995-06-07 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Filter material
DE19719807A1 (en) 1997-05-13 1998-11-19 Bayer Ag Heat sealable filter material with biodegradable polymers
DE19820918A1 (en) 1997-05-16 1998-11-19 Upf Corp N D Ges D Staates Kal Self-supporting pleated filter composite and process for its manufacture
DE19731860C1 (en) 1997-07-24 1999-01-28 Freudenberg Carl Fa Dust filter bag
DE29907699U1 (en) 1999-04-30 1999-08-05 Fibermark Gessner Gmbh & Co Dust filter bag containing nanofiber fleece
DE10150073A1 (en) 2001-10-10 2003-04-24 Mann & Hummel Filter Multiple layer filter medium used in pleated filters for filtering air, oil, fuel and water comprises a layer of filter-active material made from cellulose fibers and provided with an impregnation covered with a laminated material
DE10200635A1 (en) 2002-01-10 2003-07-24 Mann & Hummel Filter filter element
US20040065195A1 (en) * 2002-10-08 2004-04-08 Gogins Mark A. Motor vehicle filter structure having visual indicator of useful life
EP1970111A1 (en) * 2007-03-05 2008-09-17 BHA Group, Inc Composite filter media and methods of manufacture

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8444896B2 (en) 2003-06-19 2013-05-21 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8178199B2 (en) 2003-06-19 2012-05-15 Eastman Chemical Company Nonwovens produced from multicomponent fibers
US8163385B2 (en) 2003-06-19 2012-04-24 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8444895B2 (en) 2003-06-19 2013-05-21 Eastman Chemical Company Processes for making water-dispersible and multicomponent fibers from sulfopolyesters
US8216953B2 (en) 2003-06-19 2012-07-10 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8148278B2 (en) 2003-06-19 2012-04-03 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8236713B2 (en) 2003-06-19 2012-08-07 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8247335B2 (en) 2003-06-19 2012-08-21 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8257628B2 (en) 2003-06-19 2012-09-04 Eastman Chemical Company Process of making water-dispersible multicomponent fibers from sulfopolyesters
US8262958B2 (en) 2003-06-19 2012-09-11 Eastman Chemical Company Process of making woven articles comprising water-dispersible multicomponent fibers
US8273451B2 (en) 2003-06-19 2012-09-25 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8277706B2 (en) 2003-06-19 2012-10-02 Eastman Chemical Company Process of making water-dispersible multicomponent fibers from sulfopolyesters
US8314041B2 (en) 2003-06-19 2012-11-20 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
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US8398907B2 (en) 2003-06-19 2013-03-19 Eastman Chemical Company Process of making water-dispersible multicomponent fibers from sulfopolyesters
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US8158244B2 (en) 2003-06-19 2012-04-17 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8227362B2 (en) 2003-06-19 2012-07-24 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US8513147B2 (en) 2003-06-19 2013-08-20 Eastman Chemical Company Nonwovens produced from multicomponent fibers
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US8871052B2 (en) 2012-01-31 2014-10-28 Eastman Chemical Company Processes to produce short cut microfibers
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US8906200B2 (en) 2012-01-31 2014-12-09 Eastman Chemical Company Processes to produce short cut microfibers
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