EP3034666A1 - Tissu isolant et filtrant et son utilisation en tant que materiau inerte absorbant le bruit - Google Patents

Tissu isolant et filtrant et son utilisation en tant que materiau inerte absorbant le bruit Download PDF

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Publication number
EP3034666A1
EP3034666A1 EP15199873.9A EP15199873A EP3034666A1 EP 3034666 A1 EP3034666 A1 EP 3034666A1 EP 15199873 A EP15199873 A EP 15199873A EP 3034666 A1 EP3034666 A1 EP 3034666A1
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EP
European Patent Office
Prior art keywords
fibers
sound
insulating
carbon
gas stream
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Withdrawn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
EP15199873.9A
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German (de)
English (en)
Inventor
Andreas Schmohl
Klaus Breuer
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Publication of EP3034666A1 publication Critical patent/EP3034666A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon 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
    • 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
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • 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
    • D04H1/4274—Rags; Fabric scraps
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/16—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/02—Corrosion resistive metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/18—Plastics material, e.g. polyester resin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/18—Plastics material, e.g. polyester resin
    • F01N2530/20—Plastics material, e.g. polyester resin reinforced with mineral or metallic fibres

Definitions

  • the invention relates to a fluid-permeable insulation and filter material in the form of a consolidated non-woven fabric, which is intended in particular for use as an inert sound-absorbing material that can come into contact with corrosive and aggressive fluids even at elevated temperatures.
  • fluids refers to free-flowing gaseous, vaporous or liquid substances and substance mixtures to which liquid or solid particulate constituents which can have a corrosive and aggressive action, especially at high temperatures, can also be added as separate phases .
  • High-energy fluids of the type mentioned may contain some of their energy in the form of sound energy or pressure waves or pressure. Since sound, which is perceived by the environment as noise or noise nuisance, in everyday life or at work is perceived as disturbing and proven to be harmful to health, have long been made considerable efforts to suppress sound emissions as far as possible by absorbing the sound energy.
  • Sound energy is removed from currently flowing fluids by various methods, which are often used in combination, and the devices used for this purpose are referred to as silencers.
  • insulation materials used in which the high-energy fluid can penetrate and in which it loses as much of the sound energy contained in it by interaction with the insulating material , typically in that the sound energy in the insulating material is converted into heat or that fine structures such as fine fibers and membranes of the insulating material are destroyed by the sound, wherein the fluid is deprived of the energy contained in it as sound or pressure waves.
  • a new fluid-permeable insulating material which can in principle be used in a multiplicity of different silencer devices, in particular in those in which porous materials, such as rockwool, glass wool or glass fibers, which are currently used for sound absorption, are used At least partially convert sound energy into heat.
  • An insulating material according to the invention should be able to replace the usual porous materials in mufflers of various constructions, but should in particular offer advantages over the currently used materials if the fluid to be extracted from the sound energy, as such or due to the gases contained or entrained liquid or Solid particles are also highly corrosive, especially at higher temperatures.
  • a muffler is disclosed as an insert for a chimney, which has the form of a double-walled tube in which a sound-absorbing and heat-resistant absorber material, in particular rock wool, is arranged between a cylindrical outer tube and a perforated cylindrical inner jacket.
  • a sound-absorbing and heat-resistant absorber material in particular rock wool
  • U.S. Patents 5,926,954 and 6,148,955 are described insofar similar muffler, as well as there a fluid is passed through a perforated inner tube that is surrounded by a sound-absorbing material. This is either a fiberglass material or a mineral wool.
  • the sound-absorbing material is not arranged in the flow path of the fluid to which the sound energy is to be removed, but surrounds its flow path.
  • a muffler of a different kind and for a slightly different use is described in the European patent EP 2 152 556 B1 or the corresponding published US patent application US 2010/0140015 A1 in which a cup-shaped silencer filled with a sound-absorbing material in the form of a cartridge of a knitted fiber material surrounded by a felt layer is used to dampen the exit sound of compressed air from a compressed air system. In this case, flows through the fluid to be extracted from the sound energy, the sound-absorbing material.
  • the material polyamide fibers are provided in particular.
  • a fluid-permeable insulating and filter fabric in the form of a consolidated nonwoven fabric, in which the fibers of the nonwoven fabric are formed at least predominantly of carbon fibers, which consist entirely or at least in the region of their fiber surface made of carbon, and that the fibers are bonded to at least a portion of their contact points by binders, wherein the binders are preferably solidified binder droplets or solidified binder fibers formed from a molten or solvent-containing precursor.
  • Carbon fiber nonwovens have hitherto been mainly produced and used for uses in which the electrical conductivity properties of the carbon fibers are important or in which the electrical conductivity of the carbon fibers is used, for example their conductivity or their heatability in an electrical heating mat.
  • a carbon fiber preform for a carbon fiber reinforced plastic molding with a binder such as a bisphenol A based epoxy resin is solidified by induction induction heating.
  • preforms for carbon fiber reinforced plastic molded parts are primarily a only temporarily, during a production process required solidification EP 0 864 183 B1
  • a carbon fiber nonwoven fabric of carbonized fibers is disclosed as a raw material for a gas diffusion electrode.
  • a heater according to DE 195 09 153 A1 serves a stiffened with an electrically conductive binder carbon fiber fleece with power connections as a heating mat for a heater, in particular for outside mirrors of motor vehicles.
  • a similar application as a heating element in a plastic composite is described in the WO 2006/131108 A1 ,
  • the nonwoven fabric forming the body of the insulating and filtering fabric of the present invention is preferably a nonwoven fabric in the form of a tangled fabric of carbon fibers selected from carbon fiber composites (CFRP) of recycled carbon fibers or carbon fibers obtained by at least surface carbonization (pyrolysis) of plastics or carbon fibers Natural fibers, in particular cellulose and lignin fibers were produced.
  • CFRP carbon fiber composites
  • Natural fibers, in particular cellulose and lignin fibers were produced.
  • Carbon fibers of the type mentioned have due to the preceding recycling process or carbonization usually no smooth surfaces, but are rough and / or have superficially protruding fiber fragments, which is advantageous for the absorption of sound energy and sound attenuation.
  • the binder contained in the insulation and filter material according to the invention is a binder which is at elevated temperatures against corrosive and aggressive chemicals that occur in an exhaust gas stream from combustion gases of a heating system or an internal combustion engine or in a process gas stream of an industrial plant has a resistance at least comparable to the durability of the carbon fibers. This contributes to the insulating material retaining its sound-absorbing properties over long periods of use.
  • Suitable binders can be found, for example, in the classes of epoxy resins, phenolic resins, organosilanes, inorganic silicates, lignin materials and / or lignin sulfonates.
  • hydrocarbon polymers or perfluorinated or partially fluorinated hydrocarbon polymers are used as binders.
  • the invention also relates to the use of an insulating and filter material according to the invention as an inert sound-absorbing material for contact with corrosive and aggressive fluids at elevated temperatures, in particular in a muffler for an exhaust gas stream of combustion gases from a heating system or an internal combustion engine, for a compressed gas stream or for a Process gas flow of an industrial plant, eg in containers, pipelines and process plants.
  • the sound attenuating means may be a muffler formed by an inner tube sheathed with sound absorbing apertures and enclosed by a sound insulating fluid permeable material disposed in a closed outer tube for an exhaust gas flow or in a gas flow a fluid flowed insulation filled, eg cup-shaped, muffler or a muffler of another type known per se for fluids in the form of gases or vapors, in which porous sound-absorbing materials are used.
  • the carbon fiber fleece which forms the body of the insulating and filter cloth, is made of carbon fibers (Carbon fibers), which are characterized by a high resistance to corrosive and aggressive hot fluids.
  • Carbon fibers show only a very low thermal expansion, so that in their use, the thermal stresses remain low due to strong temperature differences in the muffler.
  • recycled carbon fibers are primarily used, which can be recovered from carbon fiber composites (CFRP), or carbon fibers obtained by at least superficial carbonation of natural renewable raw materials, in particular lignin fibers, can be obtained.
  • CFRP carbon fiber composites
  • carbon fibers obtained by at least superficial carbonation of natural renewable raw materials, in particular lignin fibers can be obtained.
  • the carbon fibers it is not necessary for the carbon fibers to have a uniform, narrowly defined fiber length.
  • Carbon fiber waste in long fiber form has already been proposed as a material for certain nonwovens.
  • the performance characteristics of an insulating and filter material according to the invention for sound insulation are also influenced by the binder used, its amount and the manner in which it is used to solidify the nonwoven fabric.
  • the binder is one for the intended use, i. on contact with the respective fluid at its typical temperatures, sufficient resistance, so that the solidification points do not become weak points for the resistance and strength of the entire insulation and filter material according to the invention.
  • binders in the classes of epoxy resins, phenolic resins, organosilanes, inorganic silicates, lignin materials and / or lignosulfonates.
  • the binders can be used to solidify the carbon fiber fabric in a manner known per se as binder solutions to be sprayed on (for example epoxy resins in a solvent such as butyl acetate, phenolic resins in aqueous carriers, organosilanes in an alcohol, lignin or lignin sulfonates in water or water / alcohol mixtures) , With a suitable wetting behavior they migrate along the fiber surfaces and accumulate at the crossing points of the carbon fibers, where they dry or solidify to solid droplets.
  • binders hydrophobic binders based on hydrocarbon polymers, in particular temperature-resistant perfluorinated or partially fluorinated plastics are advantageously scattered in the production of the nonwoven fabric as fine granules between the carbon fibers.
  • the Granules can be obtained inexpensively using fluoropolymer waste.
  • the binders which can be used are also meltable thermoplastics, in particular in the form of solid hydrocarbon polymers without hydrolyzable or hydrophilic groups, e.g. made of polyethylene or polypropylene.
  • binders can also be used as fibers, which are mixed in the production with the carbon fibers of the nonwoven fabric and melt or soften when heated and connect the carbon fibers together.
  • carbon fibers e.g. by doping with metals, by superficial oxidation, by etching or by treatment with a plasma, e.g. an atmospheric or low pressure plasma to cause the carbon fibers to be better absorbed by the binders used, e.g. strongly hydrophobic binders such as fluoropolymer binder are wetted and a favorable ratio of fiber wetting and surface tension of the liquid or molten binder is obtained.
  • a plasma e.g. an atmospheric or low pressure plasma
  • a particularly preferred embodiment of an insulating and filter fabric according to the invention is obtained by solidifying a carbon fiber random mat with a fluoropolymer binder introduced as granules or in fiber form, in particular in quantities between 1 and 20% by weight of the finished consolidated nonwoven can be.
  • a fluoropolymer binder introduced as granules or in fiber form, in particular in quantities between 1 and 20% by weight of the finished consolidated nonwoven can be.
  • carbon fibers and binder can be scattered substantially together on a conveyor belt, compacted by pressing and / or subsequently thermally treated, for example with IR lamps, by induction heating or in a microwave tunnel.
  • the fluoropolymer bonds the fibers their points of contact and thus ensures when cooling for a stabilization of the structure of the fiber mat or the press cake.
  • binder presscake fluoropolymer granules presscake
  • the insulating and filtering materials according to the invention can be produced as fiber mats or press cakes of various design and shape (thickness, density, running area) and subsequently for the intended use, e.g. in a form suitable for the particular type of silencer in which they are to be used.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Exhaust Silencers (AREA)
  • Filtering Materials (AREA)
EP15199873.9A 2014-12-17 2015-12-14 Tissu isolant et filtrant et son utilisation en tant que materiau inerte absorbant le bruit Withdrawn EP3034666A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014226266.6A DE102014226266A1 (de) 2014-12-17 2014-12-17 Dämm- und Filterstoff und seine Verwendung als inertes schallabsorbierendes Material

Publications (1)

Publication Number Publication Date
EP3034666A1 true EP3034666A1 (fr) 2016-06-22

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EP15199873.9A Withdrawn EP3034666A1 (fr) 2014-12-17 2015-12-14 Tissu isolant et filtrant et son utilisation en tant que materiau inerte absorbant le bruit

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Country Link
EP (1) EP3034666A1 (fr)
DE (1) DE102014226266A1 (fr)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904529A1 (de) 1979-02-07 1980-08-14 Graubremse Gmbh Mit einer abblasoeffnung versehenes luftventil fuer eine druckluftanlage
WO1988002695A1 (fr) * 1986-10-14 1988-04-21 The Dow Chemical Company Isolation phonique et thermique
EP0396753A1 (fr) * 1988-07-28 1990-11-14 Yamato Co: Ltd Silencieux pour gaz d'echappement de moteurs a combustion
US5036585A (en) 1988-08-05 1991-08-06 Grunzweig & Hartmann Ag Process for the manufacture of an exhaust silencer
EP0316640B1 (fr) 1987-11-18 1993-02-10 BBC Brown Boveri AG Silencieux à basse fréquence
DE19509153A1 (de) 1995-03-14 1996-09-19 Bayerische Motoren Werke Ag Formkörper mit Heizeinrichtung, insbesondere Außenrückblickspiegel eines Kraftfahrzeugs
US5926954A (en) 1997-09-10 1999-07-27 Acoust-A-Fiber Research & Development, Inc. Method of making a silencer
EP0612221B1 (fr) 1992-09-11 1999-11-17 Philip Morris Products Inc. Unite a arome de tabac pour articles a fumer electriques
EP0963964A1 (fr) * 1997-02-27 1999-12-15 Osaka Gas Company Limited Materiau d'isolation thermique et acoustique, et son procede de production
EP0864183B1 (fr) 1995-11-28 2000-11-08 Proton Motor Fuel Cell Gmbh Electrode de diffusion gazeuse pour piles a combustible avec membrane en electrolyte polymerique
DE10010112A1 (de) * 2000-03-03 2001-09-06 Asglawo Gmbh Stoffe Zum Daemme Verfahren zur Herstellung eines flexiblen,hochtemperaturbeständigen Wärme-und Schalldämmmaterials geringer Dichte,insbesondere für Anwendungen in der Luft-und Raumfahrtindustrie sowie im Fahrzeug-,Waggon- und Schiffsbau
DE10353070A1 (de) 2003-11-13 2005-06-30 Airbus Deutschland Gmbh Verfahren und Vorrichtung zur Binderaktivierung auf einem Faserhalbzeug/Preform durch direktes Erwärmen von Kohlenstofffasern über eine angelegte elektrische Spannung
DE102004046553A1 (de) 2004-09-24 2006-03-30 Rotex Heating Systems Gmbh Schalldämpfer für eine Abgasleitung einer Heizungsanlage
EP1382031B1 (fr) 2001-04-27 2006-07-12 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Silencieux
WO2006131108A1 (fr) 2005-06-10 2006-12-14 Engelmann Automotive Gmbh Procede de fabrication d'un corps moule pouvant etre chauffe, en particulier pour un retroviseur exterieur, avec un element chauffant
US20080142295A1 (en) * 2006-12-14 2008-06-19 Huff Norman T Binder for preforms in silencers
US20100140015A1 (en) 2007-05-09 2010-06-10 Stephan Weber Silencer

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DE19713068A1 (de) * 1997-03-27 1998-10-01 Ecm Ingenieur Unternehmen Fuer Verfahren zur Herstellung von Heißgasfilter-Elementen sowie die Verwendung des Filters zur Heißgasfiltration von Rauchgasen
DE19836267A1 (de) * 1998-08-11 2000-02-17 Gunther Rosenmayer Elektrisch leitfähiges Schichtmaterial
DE60040033D1 (de) * 1999-05-12 2008-10-09 Sumitomo Electric Industries Vliesstoff aus Metallfasern und Verfahren zu dessen Herstellung
JP2002146659A (ja) * 2000-11-07 2002-05-22 Sumitomo Electric Ind Ltd 金属不織布及びその製造方法
US20040142620A1 (en) * 2002-09-10 2004-07-22 Fibermark, Inc. Nonwoven fiber webs with poly(phenylene sulfide) binder

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904529A1 (de) 1979-02-07 1980-08-14 Graubremse Gmbh Mit einer abblasoeffnung versehenes luftventil fuer eine druckluftanlage
WO1988002695A1 (fr) * 1986-10-14 1988-04-21 The Dow Chemical Company Isolation phonique et thermique
EP0316640B1 (fr) 1987-11-18 1993-02-10 BBC Brown Boveri AG Silencieux à basse fréquence
EP0396753A1 (fr) * 1988-07-28 1990-11-14 Yamato Co: Ltd Silencieux pour gaz d'echappement de moteurs a combustion
US5036585A (en) 1988-08-05 1991-08-06 Grunzweig & Hartmann Ag Process for the manufacture of an exhaust silencer
EP0612221B1 (fr) 1992-09-11 1999-11-17 Philip Morris Products Inc. Unite a arome de tabac pour articles a fumer electriques
DE19509153A1 (de) 1995-03-14 1996-09-19 Bayerische Motoren Werke Ag Formkörper mit Heizeinrichtung, insbesondere Außenrückblickspiegel eines Kraftfahrzeugs
EP0864183B1 (fr) 1995-11-28 2000-11-08 Proton Motor Fuel Cell Gmbh Electrode de diffusion gazeuse pour piles a combustible avec membrane en electrolyte polymerique
EP0963964A1 (fr) * 1997-02-27 1999-12-15 Osaka Gas Company Limited Materiau d'isolation thermique et acoustique, et son procede de production
US5926954A (en) 1997-09-10 1999-07-27 Acoust-A-Fiber Research & Development, Inc. Method of making a silencer
US6148955A (en) 1997-09-10 2000-11-21 Acoust-A-Fiber Research And Development Inc Silencer
DE10010112A1 (de) * 2000-03-03 2001-09-06 Asglawo Gmbh Stoffe Zum Daemme Verfahren zur Herstellung eines flexiblen,hochtemperaturbeständigen Wärme-und Schalldämmmaterials geringer Dichte,insbesondere für Anwendungen in der Luft-und Raumfahrtindustrie sowie im Fahrzeug-,Waggon- und Schiffsbau
EP1382031B1 (fr) 2001-04-27 2006-07-12 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Silencieux
DE10353070A1 (de) 2003-11-13 2005-06-30 Airbus Deutschland Gmbh Verfahren und Vorrichtung zur Binderaktivierung auf einem Faserhalbzeug/Preform durch direktes Erwärmen von Kohlenstofffasern über eine angelegte elektrische Spannung
DE102004046553A1 (de) 2004-09-24 2006-03-30 Rotex Heating Systems Gmbh Schalldämpfer für eine Abgasleitung einer Heizungsanlage
WO2006131108A1 (fr) 2005-06-10 2006-12-14 Engelmann Automotive Gmbh Procede de fabrication d'un corps moule pouvant etre chauffe, en particulier pour un retroviseur exterieur, avec un element chauffant
US20080142295A1 (en) * 2006-12-14 2008-06-19 Huff Norman T Binder for preforms in silencers
US20100140015A1 (en) 2007-05-09 2010-06-10 Stephan Weber Silencer
EP2152556B1 (fr) 2007-05-09 2014-06-11 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Silencieux

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