DE4413606A1 - Composite filter for motor vehicles removes acid gases and particles from the air - Google Patents

Composite filter for motor vehicles removes acid gases and particles from the air

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Publication number
DE4413606A1
DE4413606A1 DE4413606A DE4413606A DE4413606A1 DE 4413606 A1 DE4413606 A1 DE 4413606A1 DE 4413606 A DE4413606 A DE 4413606A DE 4413606 A DE4413606 A DE 4413606A DE 4413606 A1 DE4413606 A1 DE 4413606A1
Authority
DE
Germany
Prior art keywords
filter
impregnation
particles
filter according
motor vehicles
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Withdrawn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
DE4413606A
Other languages
German (de)
Inventor
Hasso Von Bluecher
Ernest De Dr Ruiter
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.)
MHB FILTRATION GMBH + CO. KG, 40699 ERKRATH, DE
Original Assignee
Hasso Von Bluecher
Ruiter Ernest De
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 Hasso Von Bluecher, Ruiter Ernest De filed Critical Hasso Von Bluecher
Priority to DE4413606A priority Critical patent/DE4413606A1/en
Publication of DE4413606A1 publication Critical patent/DE4413606A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28028—Particles immobilised within fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/407—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties containing absorbing substances, e.g. activated carbon
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • 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
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
    • 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
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0464—Impregnants

Abstract

Composite filter comprising a particle filter and an adsorption filter is mfd. by the wet fleece process. By successively drawing particle filter layers, and adsorption filter layers, from a mixture of active carbon particles and fibres, into a sieve with the same dimensions as the end product. The aq. dispersion mixture, also contains inorganic and/or organic materials, for impregnating the adsorption material, in order to enable chemisorption to occur as well as physisorption.

Description

Die deutsche Patentanmeldung P 44 08 094.8 beschreibt ein geeignetes Ver­ fahren, um Kombifilter für die Innenluft von Kraftfahrzeugen in einem Arbeits­ gang herzustellen. Das Verfahren arbeitet nach dem Naßvliesverfahren, wobei allerdings in eine Siebform, die dem Endprodukt entspricht, abgesaugt wird, so daß letzteres ohne Verschnitt hergestellt wird.German patent application P 44 08 094.8 describes a suitable Ver drive to work combined filters for the indoor air of motor vehicles in one gear manufacture. The process works according to the wet fleece process, whereby however, is suctioned off into a sieve shape that corresponds to the end product, so that the latter is produced without waste.

Die Innenluft in Kraftfahrzeugen wurde noch vor nicht langer Zeit überhaupt nicht filtriert. Ein erster Schritt in der guten Richtung waren Partikelfilter, die beispielsweise Pollen abscheiden sollten. Nachdem festgestellt worden war, daß das Wohlbefinden der Insassen durch diverse Gerüche, insbesondere Dieselabgase von zu fett eingestellten Benzinern, aber auch durch Gerüche von Kläranlagen, landwirtschaftlichen Betrieben usw., beeinträchtigt wird, ent­ stand die zweite Filtergeneration, bei der eine Aktivkohleschicht diese Gerüche adsorbiert. Diese Filter könnte man Komfort-Filter nennen. Sie sind allerdings nicht im Stande, gewisse flüchtige Schadstoffe befriedigend abzuscheiden.The indoor air in motor vehicles was not long ago at all not filtered. Particle filters were a first step in the right direction for example, should remove pollen. After it was found that the well-being of the occupants through various smells, in particular Diesel emissions from petrol engines that are set too rich, but also from odors of sewage treatment plants, agricultural businesses, etc., ent was the second generation of filters, in which an activated carbon layer had these smells adsorbed. These filters could be called comfort filters. However, you are unable to separate certain volatile pollutants satisfactorily.

Die nächste Generation, die heute bereits vorbereitet wird, könnte man mit Schadstoff-Filter bezeichnen. Neben der Physisorption sorgt eine Chemisorp­ tion, die durch besondere Imprägnierungen der Aktivkohle ermöglicht wird, für die Abscheidung bestimmter, auf Aktivkohle nicht mehr adsorbierter Schad­ stoffe.The next generation, which is already being prepared today, could be with Denote pollutant filter. In addition to physisorption, a chemisorp ensures tion, which is made possible by special impregnation of the activated carbon, for the separation of certain damage no longer adsorbed on activated carbon fabrics.

Jedes Adsorptionsfilter muß gegen Partikel geschützt werden, da diese sonst die Poren der Aktivkohle verstopfen würden. Aus diesem Grunde muß dem Adsorptionsfilter immer ein gutes Partikelfilter vorgeschaltet sein. Dabei kön­ nen beide Filter lose hintereinandergeschaltet, oder aber, und das ist der heu­ tige Trend, in einem einzigen untrennbaren Filter kombiniert sein. So ein Filter wird häufig als Kombifilter bezeichnet.Every adsorption filter must be protected against particles, otherwise they will would clog the pores of the activated carbon. For this reason Adsorption filters must always be preceded by a good particle filter. You can Both filters are loosely connected in series, or else, and that's the hay trend, be combined in a single inseparable filter. Such a filter  is often referred to as a combination filter.

Die Patentanmeldung P 44 08 094.8 besagt, daß man nach dem Prinzip des Naßvliesverfahrens bei Absaugen in eine dem Endprodukt entsprechende Form im gleichen Arbeitsgang folgende Schichten aufbauen kann: Eine aus­ gezeichnete Partikelfilterschicht, eine aus Schmelzfasern und Aktivkohleteil­ chen bestehende Adsorptionsschicht und die Deckschicht. Dabei ist die schar­ fe Trennung der Schichten gar nicht nötig: Sie können leicht fließend ineinan­ derübergehen.Patent application P 44 08 094.8 states that according to the principle of Wet fleece method in suction in a corresponding to the end product Form can build up the following layers in the same operation: One off drawn particle filter layer, one made of melt fibers and activated carbon part Chen existing adsorption layer and the top layer. The sharp one Separation of the layers is not necessary at all: they can easily flow into each other pass over.

Nach Durchsaugen der Faser- bzw. Faser/Kohle-Dispersion wird überschüssi­ ges Wasser abgesaugt und das Filter getrocknet und ausreichend verhitzt, da­ mit die Schmelzfasern ihre Wirkung bringen.After sucking through the fiber or fiber / carbon dispersion is excess sucked off water and the filter dried and sufficiently heated, because with the melt fibers bring their effect.

Es wurde nun überraschenderweise gefunden, daß es möglich ist, die Kohle im gleichen Arbeitsgang zu imprägnieren. Eine viel verwendete Imprägnierung gegen saure Gase (NO₂, SO₂ . . .) ist die K₂CO₃-Imprägnierung, die beispiels­ weise mit einer 10%igen Lösung durchgeführt wird. Wird nun das Wasser der Faser- und Kohle-Dispersion im beschriebenen Verfahren durch eine K₂CO₃- Lösung ersetzt, erhält man ein Kombifilter, dessen Aktivkohle tadellos gegen saure Gase imprägniert ist. Daß im Partikelfilter Restmengen von K₂CO₃ vor­ handen sind, stört in keiner Weise. Diese Mengen können weiter durch opti­ males Durchsaugen am Ende des Takts auf ein Minimum reduziert werden. Ein "Stauben" der Filter bei der ersten Verwendung wurde nicht beobachtet.It has now surprisingly been found that it is possible to use the coal impregnated in the same operation. A much used impregnation against acid gases (NO₂, SO₂...) is the K₂CO₃ impregnation, for example wise is carried out with a 10% solution. Now the water of the Fiber and carbon dispersion in the process described by a K₂CO₃- Solution replaced, you get a combination filter, the activated carbon perfectly against is impregnated with acidic gases. That in the particle filter residual amounts of K₂CO₃ before are in no way disturbing. These quantities can be further opti times sucking through at the end of the cycle can be reduced to a minimum. No "dusting" of the filters when first used was observed.

Claims (6)

1. Kombifilter, bestehend aus einem Partikelfilter und einem Adsorptionsfil­ ter, insbesondere auf Basis von Aktivkohle, hergestellt nach dem Naß­ vliesverfahren, wobei sukzessiv erst die Partikelfilterschicht und danach die Adsorptionsfilterschicht aus einer Mischung von Adsorberteilchen und (Schmelz)fasern durch Absaugen in eine Siebform mit den dem Endpro­ dukt entsprechenden Dimensionen hergestellt wird, dadurch gekenn­ zeichnet, daß die wäßrige Dispersion von Fasern und Adsorberteilchen auch anorganische bzw. organische Stoffe zur Imprägnierung der Adsor­ ber enthält, um neben der Physisorption eine Chemisorption zu ermögli­ chen.1. Combination filter, consisting of a particle filter and an Adsorptionsfil ter, in particular based on activated carbon, manufactured by the wet nonwoven process, successively first the particle filter layer and then the adsorption filter layer from a mixture of adsorber particles and (melt) fibers by suction in a sieve form the dimensions corresponding to the end product are produced, characterized in that the aqueous dispersion of fibers and adsorber particles also contains inorganic or organic substances for impregnating the adsorber to enable chemisorption in addition to physisorption. 2. Kombifilter nach Anspruch 1, dadurch gekennzeichnet, daß die Im­ prägnierung K₂CO₃ ist.2. Combined filter according to claim 1, characterized in that the im Impregnation is K₂CO₃. 3. Kombifilter nach Anspruch 1, dadurch gekennzeichnet, daß die Im­ prägnierung H₃PO₄ bzw. H₂SO₄ ist.3. Combined filter according to claim 1, characterized in that the im Impregnation H₃PO₄ or H₂SO₄ is. 4. Kombifilter nach Anspruch 1, dadurch gekennzeichnet, daß die Im­ prägnierung I₂/KI ist.4. Combined filter according to claim 1, characterized in that the im is I₂ / KI. 5. Kombifilter nach Anspruch 1, dadurch gekennzeichnet, daß die Im­ prägnierung Trimethanolamin ist.5. Combined filter according to claim 1, characterized in that the im impregnation is trimethanolamine. 6. Kombifilter nach Anspruch 1, dadurch gekennzeichnet, daß die Im­ prägnierungsstoffe in Konzentrationen von 5-20% vorliegen.6. Combined filter according to claim 1, characterized in that the im Impregnation substances are present in concentrations of 5-20%.
DE4413606A 1994-03-04 1994-04-19 Composite filter for motor vehicles removes acid gases and particles from the air Withdrawn DE4413606A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4413606A DE4413606A1 (en) 1994-03-04 1994-04-19 Composite filter for motor vehicles removes acid gases and particles from the air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407149A DE4407149B4 (en) 1994-03-04 1994-03-04 Method for producing a multilayer adsorption filter layer
DE4413606A DE4413606A1 (en) 1994-03-04 1994-04-19 Composite filter for motor vehicles removes acid gases and particles from the air

Publications (1)

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DE4413606A1 true DE4413606A1 (en) 1995-11-16

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DE4413606A Withdrawn DE4413606A1 (en) 1994-03-04 1994-04-19 Composite filter for motor vehicles removes acid gases and particles from the air

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Application Number Title Priority Date Filing Date
DE4407149A Expired - Fee Related DE4407149B4 (en) 1994-03-04 1994-03-04 Method for producing a multilayer adsorption filter layer

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248518A1 (en) * 2002-10-17 2004-04-29 Mann + Hummel Gmbh adsorption filter
US6761753B2 (en) * 2000-05-05 2004-07-13 Extraction Systems, Inc. Methods using filters employing both acidic polymers and physical-adsorption media
CN100378262C (en) * 2003-09-30 2008-04-02 傅旭正 Forming method of interweaving composite filtering material using aerodynamic force and structure thereof
US7540901B2 (en) 2000-05-05 2009-06-02 Entegris, Inc. Filters employing both acidic polymers and physical-adsorption media
US7922791B2 (en) 2006-07-13 2011-04-12 Entegris, Inc. Filtering system for a semiconductor processing tool
DE102018114351A1 (en) 2017-06-30 2019-01-03 Mann+Hummel Gmbh filter media

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19617754A1 (en) * 1996-05-03 1997-11-06 Bluecher Gmbh Air cleaning filter for removing pollutants and odours from air
DE19708693A1 (en) * 1996-05-03 1998-09-10 Bluecher Gmbh Filter material for water filters or as a combined filter material for vehicle interiors
DE10026902A1 (en) * 2000-05-31 2002-04-18 Sandler Helmut Helsa Werke Filters, in particular for a vehicle
CN104399443A (en) * 2014-11-18 2015-03-11 柳州市金旭节能科技有限公司 Adsorbent cotton strip bag
DE102017209145A1 (en) * 2017-05-31 2018-12-06 BSH Hausgeräte GmbH FILTER STRIPS FOR A SPIRAL-WRAPPED WRAP FILTER
CN113337963B (en) * 2021-06-01 2023-06-06 江南大学 Nonwoven material with gradient structure for melt-blown polypropylene protection and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE456612C (en) * 1923-04-07 1928-02-27 Luftfilter Baugesellschaft M B Process for the complete dedusting of air and gases
DE2829695A1 (en) * 1978-07-06 1980-01-24 Heinz Hoelter Chemical absorption filter for gas purificn. - comprising fleece coated with calcium aluminium silicate
DE3525476A1 (en) * 1985-07-17 1987-01-29 Peter Dr Rieckmann Multifunctional filter for removing solid and gaseous pollutants from air
GB2194255A (en) * 1986-07-31 1988-03-02 Kimberly Clark Co Active particle-containing nonwoven material, method of formation thereof, and uses thereof
EP0399730A1 (en) * 1989-05-26 1990-11-28 Pall Corporation Sorbent filtration device
DE4206442A1 (en) * 1992-02-29 1993-09-02 Sandler Helmut Helsa Werke Surface filter used for protective clothing - comprises air permeable carrier of particles fixed by two component crosslinked adhesive

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3971373A (en) * 1974-01-21 1976-07-27 Minnesota Mining And Manufacturing Company Particle-loaded microfiber sheet product and respirators made therefrom
DE2512659B2 (en) * 1974-11-20 1978-02-02 Toyobo Co, Ltd, Osaka (Japan) ADSORPTION FILTER MATERIAL
DE3029758A1 (en) * 1980-08-06 1982-04-01 Ochs, Hans-Joachim, 4030 Ratingen GAS ADSORPTION FILTER, IN PARTICULAR FOR AIR PURIFICATION
SE436693B (en) * 1981-06-04 1985-01-21 Bofors Ab SET TO MAKE A RECOVERABLE FILTER FOR GAS OR LIQUID SEPARATION
DE3228156C2 (en) * 1982-07-28 1994-01-20 Bluecher Hubert Use of a flexible surface filter in an air cleaning device for motor vehicle cabins
DE3271426D1 (en) * 1982-10-22 1986-07-03 Gessner & Co Gmbh Multilayer filter material, process for making it and its use
DE3304349C3 (en) * 1983-02-09 1995-10-26 Bluecher Hubert Surface filter and process for its manufacture
DE3403738A1 (en) * 1984-02-03 1985-08-08 Helmut 7074 Mögglingen Schafft METHOD FOR PRODUCING A FILTER BODY AND FILTER BODY PRODUCED BY THIS METHOD AND ITS APPLICATION FOR FILTERING AND / OR CHEMICALLY-PHYSICAL TREATMENT OF LIQUID AND / OR GASEOUS MEDIA
DE3435043A1 (en) * 1984-09-24 1986-04-03 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach POLYGRANULAR CARBON BODY AND METHOD FOR THE PRODUCTION THEREOF
DE3443900C2 (en) * 1984-12-01 1997-03-06 Bluecher Hubert Protective material, process for its production and its use
WO1991014496A1 (en) * 1990-03-20 1991-10-03 W.L. Gore & Associates, Inc. An adsorbent assembly for removing gaseous contaminants
DE4134222C2 (en) * 1991-10-16 2002-09-19 Mhb Filtration Gmbh & Co Kg Filters for passenger compartments
DE4142017A1 (en) * 1991-12-19 1993-06-24 Hasso Von Bluecher Filter for redn. of fuel emission from tanks - using adsorption film in form of three=dimensional support contg. adsorbents e.g. microporous carbon@ and porous styrene]-di:vinyl]-benzene polymers
DE4143237A1 (en) * 1991-12-31 1993-07-01 Minnesota Mining & Mfg FILTER ELEMENT FOR FILTERING GASES AND / OR LIQUIDS, IN PARTICULAR FOR FILTERING THE AIR FLOWING INTO THE PASSENGER AREA OF A MOTOR VEHICLE
DE9301995U1 (en) * 1993-02-12 1993-05-27 Fabritz, Gerhard, 4150 Krefeld, De

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE456612C (en) * 1923-04-07 1928-02-27 Luftfilter Baugesellschaft M B Process for the complete dedusting of air and gases
DE2829695A1 (en) * 1978-07-06 1980-01-24 Heinz Hoelter Chemical absorption filter for gas purificn. - comprising fleece coated with calcium aluminium silicate
DE3525476A1 (en) * 1985-07-17 1987-01-29 Peter Dr Rieckmann Multifunctional filter for removing solid and gaseous pollutants from air
GB2194255A (en) * 1986-07-31 1988-03-02 Kimberly Clark Co Active particle-containing nonwoven material, method of formation thereof, and uses thereof
EP0399730A1 (en) * 1989-05-26 1990-11-28 Pall Corporation Sorbent filtration device
DE4206442A1 (en) * 1992-02-29 1993-09-02 Sandler Helmut Helsa Werke Surface filter used for protective clothing - comprises air permeable carrier of particles fixed by two component crosslinked adhesive

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6761753B2 (en) * 2000-05-05 2004-07-13 Extraction Systems, Inc. Methods using filters employing both acidic polymers and physical-adsorption media
US7540901B2 (en) 2000-05-05 2009-06-02 Entegris, Inc. Filters employing both acidic polymers and physical-adsorption media
USRE44536E1 (en) 2000-05-05 2013-10-15 Entegris, Inc. Filters employing both acidic polymers and physical-adsorption media
DE10248518A1 (en) * 2002-10-17 2004-04-29 Mann + Hummel Gmbh adsorption filter
WO2004035177A1 (en) * 2002-10-17 2004-04-29 Mann+Hummel Gmbh Adsorbing filter element
CN100378262C (en) * 2003-09-30 2008-04-02 傅旭正 Forming method of interweaving composite filtering material using aerodynamic force and structure thereof
US7922791B2 (en) 2006-07-13 2011-04-12 Entegris, Inc. Filtering system for a semiconductor processing tool
DE102018114351A1 (en) 2017-06-30 2019-01-03 Mann+Hummel Gmbh filter media

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