WO2004073984A1 - Procede et dispositif permettant d'insonoriser des composants capables d'osciller, tels que des toles, et revetement a cet effet - Google Patents

Procede et dispositif permettant d'insonoriser des composants capables d'osciller, tels que des toles, et revetement a cet effet Download PDF

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Publication number
WO2004073984A1
WO2004073984A1 PCT/EP2003/013593 EP0313593W WO2004073984A1 WO 2004073984 A1 WO2004073984 A1 WO 2004073984A1 EP 0313593 W EP0313593 W EP 0313593W WO 2004073984 A1 WO2004073984 A1 WO 2004073984A1
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WO
WIPO (PCT)
Prior art keywords
coating
layer
intermediate layer
drone
component
Prior art date
Application number
PCT/EP2003/013593
Other languages
German (de)
English (en)
Inventor
Karlheinz Bildner
Ralf Dopheide
Christoph Freist
Zdislaw Kornacki
Marcus Simon
Josef Polak
Bernhard Koch
Original Assignee
Aksys 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
Priority claimed from DE10342753A external-priority patent/DE10342753B4/de
Application filed by Aksys Gmbh filed Critical Aksys Gmbh
Priority to EP03785713A priority Critical patent/EP1590176A1/fr
Priority to AU2003294769A priority patent/AU2003294769A1/en
Publication of WO2004073984A1 publication Critical patent/WO2004073984A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B29C48/155—Partial coating thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B11/00—Layered products comprising a layer of bituminous or tarry substances
    • B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B11/08—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0091—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B2038/1891—Using a robot for handling the layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2331/00—Polyvinylesters
    • B32B2331/04—Polymers of vinyl acetate, e.g. PVA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2363/00—Epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2395/00—Bituminous material, e.g. tar, asphalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses

Definitions

  • the present invention relates to a method and a device for the anti-vibration of vibratable components such as sheets according to the preambles of patent claims 1 and 17. Furthermore, the invention relates to a corresponding anti-drumming coating according to the preamble of patent claim 8.
  • Processes, devices and coatings of this type for the deadening of, for example, automotive sheet metal are known, foils made of viscose-elastic substances being firmly connected to the component to be damped in order to damp structure-borne noise. When swinging along, the damping layer is deformed by strain. Due to different E-modules and layer thicknesses, there is a complex bending stiffness of the composite system, for which an overall loss factor can be calculated depending on the frequency.
  • the frequency to be “deadened” is often the natural frequency of the component to be deadened, which is caused by an external source, the total loss factor being able to be improved primarily by a high loss factor of the damping layer or a high modulus of elasticity of the damping layer.
  • Anti-drumming compounds based on bitumen, epoxy resin compounds or rubber compounds are known as anti-drumming coatings to be applied to the vibratable component. They are usually applied by spraying or extrusion in the flowable state.
  • Epoxy resin compositions and other thermally or chemically curing compositions, such as materials containing multifunctional acrylates have been shown to slightly deform the sheet metal that supports them during curing.
  • anti-drumming coatings based on bitumen or rubber do not exert as high forces as thermally or chemically hardening compounds, so that deformations or marks can hardly occur on the component that supports them, such as thin sheet metal.
  • the adhesion of this anti-drift coating to the sheet metal is no longer sufficient.
  • EP 0 199 372 B1 describes anti-drumming compounds which can be applied by spraying and which crosslink at temperatures of about 140 ° C. and thus become sufficiently hard.
  • the invention is therefore based on the object of specifying a method and a device for the deadening of vibratable components, so that a composite material produced in this way not only meets the acoustic requirements, but also marks on the metal sheets in the area of the anti-noise coating and detachment of the anti-noise coating in particular low temperatures can be avoided.
  • the de-drone coating should also reinforce the vibratable component if possible and meet the other mechanical load requirements.
  • an anti-drumming coating serving these purposes is to be developed.
  • At least one intermediate layer which consists in particular of an elastomeric material, is applied between the dehumidifier coating and the vibratable component.
  • an intermediate layer between the anti-drone coating and the vibratable component results in a functional separation of the anti-drone coating.
  • an elastomer adhesion promoter layer as the intermediate layer, which can be applied to the component in the flowable state, as a preferred embodiment of the invention, adheres well to the component.
  • Such a material exhibits its elastomeric properties after the phase change through solidification, gelation or poly- or copolymerization. These properties are effective in a temperature range from -40 ° C to 80 ° C.
  • the anti-drone coating which can be produced very inexpensively, prevents different expansions of the component or the anti-drone coating from causing stresses and thus deformation. of the component and thus, for example, to markings on the sheet metal of an automobile body or to a loosening of the anti-drumming coating from the sheet metal at low temperatures.
  • a polyreaction-hardening material can be used as the anti-drift coating, which deforms to such an extent when it hardens that the component, such as a thin sheet metal, would deform without the intermediate layer.
  • bituminous compositions or rubber compositions there is no longer any need to consider the cold adhesion of the compositions, because the intermediate layer, as an adhesion promoter layer, holds the anti-drift coating reliably on the component.
  • the intermediate layer ensures that relative movements between the dehumidifying coating and the component in the intermediate layer are absorbed, so that no shear forces arise which could lead to a loosening of the dehumidifying coating or a sheet metal deformation. This also applies to the coating of a vibratable wire or tube.
  • the at least one anti-drone coating is also advantageously applied in the flowable state after or simultaneously with the at least one intermediate layer. This can be done, for example, by injection molding or by means of coextrusion.
  • sprayable or extrudable materials can be used as the anti-drift coating or as an intermediate layer, which materials are applied manually or (semi) automatically to corresponding components of the automobile, for example after the galvanizing of an automobile body, using a coextrusion nozzle.
  • a damping layer, a stiffening layer or a combination of damping layer and stiffening layer can be used as the anti-drift coating.
  • different anti-drift coatings can be used, which consist of one or a combination of damping or stiffening materials.
  • both the damping layer and the stiffening layer or the intermediate layer can consist of a viscous plastic which hardens through polymerization, copolymerization, polycondensation or crosslinking (crosslinking).
  • the intermediate layer should be compatible with the layer of the dehumidifying coating facing the intermediate layer, since this is permanently bonded to the component by means of the intermediate layer. “Compatibility” is understood below to mean those plastics or plastic / metal combinations which can be adhesively bonded to one another, for example polymerizing or crosslinking.
  • the intermediate layer advantageously consists of a plastic material which obtains its properties by thermal or chemical hardening, in particular by solidification, by polyreaction or by gelling.
  • the intermediate layer consists of an elastomeric material adhering to metal, which compensates for tensions between the anti-drift coating and the component, in particular also at temperatures below approximately -5 ° C. and above approximately 35 ° C.
  • a corrosion layer can be introduced between the intermediate layer and the dehumidifier coating, which protects a corrosive component against corrosion, provided that this task does not already exist is perceived by the damping layer, the stiffening layer and / or the intermediate layer.
  • the intermediate layer can be provided with a powdery, electrically conductive material which is electrically conductively connected to the component made of metal, so that the electrically conductive intermediate layer can be connected to a galvanically coupled electron sink (sacrificial anode), which can be replaced if necessary, and that protects the component from corrosion.
  • the dehumidifier coating consists of a styrene damping layer which is applied to a thin sheet by means of an intermediate layer made of EVA.
  • the anti-drift coating consists of a stiffening layer made of an epoxy resin, which is applied to the sheet metal by means of an intermediate layer made of butyl.
  • adhesives and other elastic materials can also be used for the intermediate layer, for example highly elastic thermoplastic and thermo-crosslinkable butyl compositions and acrylates or soft PVC coatings, such as seam seals and underbody protection compositions, which are generally used in the automotive industry.
  • Two- and multi-component systems such as acrylates with epoxy resins, bitumen with rubbers containing double bonds, etc. can also be used as an intermediate layer.
  • an anti-drumming coating a cross-hardenable mass has particular advantages, since it can also be applied to very thin-walled sheets by means of the elastic intermediate layer.
  • an epoxy resin composition can be used, which also improves the acoustic properties of the anti-drumming coating compared to a coating without an intermediate layer.
  • bitumen composition in the selection of conventional bitumen-based mixtures, an inexpensive bitumen composition can also be used for the dehumidification coating, since less consideration must be given to the cold adhesion of the bitumen composition due to the elastic intermediate layer.
  • the intermediate layer also improves the acoustic effectiveness of the entire anti-drumming coating.
  • the anti-drift coating has a layer thickness of about 0.5 to 10 mm, in particular 1 to 4 mm, and the intermediate layer has a layer thickness of 0.1 to 1.2 mm.
  • the stiffening layer advantageously has a layer thickness of approximately 0.1 to 2.5 mm and the damping layer a layer thickness of approximately 0.3 to 8 mm.
  • the total thickness of the anti-drone coating, consisting of the intermediate layer and the anti-drone coating, is advantageously about 1 to 3 mm.
  • the basis weight of such a coating is generally between about 2 kg / m 2 and 4 kg / m 2 .
  • the intermediate layer is “compatible” with the layer of the dehumidifying coating facing the intermediate layer, this can be applied together with the intermediate layer by means of spraying or (co-) extrusion in one operation or only two operations.
  • Such application by means of coextrusion is both with synthetic resin compositions and with Bitumen or rubber mass possible, the latter materials can also be fed as granules via an extruder.
  • the device according to the invention for the anti-drumming of vibratable components advantageously has an extrusion nozzle, by means of which the plastic anti-drift coating can be applied to the component.
  • the extrusion die can also apply the at least one intermediate layer on the vibratable component.
  • the dehumidifier coating can be applied simultaneously with the intermediate layer, the coextrusion die being advantageously fed at the same time by at least two metering devices which meter, mix and melt the materials which can be used for the corresponding layers, the materials just before or shortly after leaving the nozzle mouth, and the intermediate layer provided with the anti-drift coating is then applied to the component.
  • the coextrusion nozzle is simultaneously fed by at least two extruders which meter and melt the thermoplastic materials which can be used for the corresponding layers, plastic granules advantageously being automatically fed from central storage containers to the extruders, so that they are continuously filled with thermoplastic material be supplied.
  • FIG. 1 shows a layer structure according to the invention with a double-layer de-stick coating
  • FIG. 2 shows a layer structure according to the invention with a single-layer dehumidifying coating
  • FIG. 3 shows a layer structure according to the invention with a different single-layer dehumidifying coating
  • FIG. 4 shows a diagram which shows the acoustic loss factor of a sheet coated by the method according to the invention as a function of the temperature
  • FIG. 5 shows a diagram corresponding to FIG. 4 for the embodiment of the invention according to FIG. 2,
  • FIG. 6 shows a diagram corresponding to FIG. 4 for the embodiment of the invention according to FIG. 3,
  • FIG. 7 shows a diagram corresponding to FIG. 4 for the embodiment of the invention according to FIG. 1,
  • Figure 8 is a schematic representation of an inventive device for applying the anti-drumming coating.
  • Figures 1 to 3 show three advantageous embodiments of the invention with different anti-drift coatings 5, which are applied to a component 1, for example a thin sheet.
  • a component 1 for example a thin sheet.
  • an intermediate layer 2 made of, in particular, elastomeric material, which at least partially mechanically and acoustically decouples the anti-drone coating 5 from the component 1.
  • FIG. 1 shows a de-drone coating 5 consisting of a damping layer 3 and a stiffening layer 4.
  • FIG. 2 shows a de-drone coating 5 consisting only of a damping layer 3
  • FIG. 3 shows a de-drone coating 5 consisting of a stiffening layer 4 and the intermediate layer 2, in which the stiffening layer 4 is connected to the component 1 by the considerably thicker intermediate layer 2.
  • the intermediate layer 2 also exerts an adhesive effect, that is to say a connecting effect.
  • FIG. 3 shows a special embodiment of the present invention, in which the intermediate layer 2 performs adhesion-promoting tasks and, together with the stiffening layer 4, also performs acoustically decoupling or steaming tasks.
  • the component 1 is connected to the stiffening layer 4 in such a way that the vibrability of the component 1 is greatly reduced by choosing a natural frequency for the stiffening layer 4 that differs from the natural frequency of the component 1.
  • Suitable materials for the individual layers are the thermoplastic, reactive or materials which chemically crosslink by two components, as shown in Table 1.
  • the coextrusion process is the preferred application technique for sprayable multi-layer materials. According to the present - ii -
  • the different layers of the anti-drumming coating are applied according to a preferred embodiment by means of a coextrusion process.
  • This method is suitable for the fully automatic application of the viscous, multi-layer acoustic compound to vehicles or corresponding vehicle components. This achieves high-quality vehicle damping that also meets the mechanical load requirements.
  • a coextrusion die which can be constructed both on the principle of the “inner mixture” and on the principle of the “outer mixture”.
  • the material layers are brought together with a sheathing adapter, so that air trapping between the material layers is minimized.
  • the material layers are joined together in the nozzle, also without noticeable air pockets.
  • the corresponding process parameters such as material quantity, mixing ratio and output quantity then decide on the determination of the mixing process to be used.
  • FIG. 4 shows, as a curve marked with triangles, the anti-drumming effect of a coating with an epoxy resin composition as material for the damping layer, which is on a thin layer elastomeric intermediate layer made of PVC was applied.
  • the weight per unit area of the epoxy resin composition was 3.0 kg / m 2
  • that of the intermediate layer was 0.3 kg / m 2 .
  • the curve marked with diamonds shows the setpoints required by the automotive industry. It can be seen that the curve for the coating according to the invention lies at about -20 ° C. and + 60 ° C. on the target curve, but from approximately 0 ° C. to 60 ° C.
  • the target curve runs above the target curve and has a range of approximately between 20 ° C and 40 ° C a clear distance from the target curve.
  • the range between approximately 10 ° C. and 40 ° C. is the temperature range for sheets facing the vehicle interior, for example door sheets or roof sheets. The acoustics in a vehicle can thus be significantly improved by the invention.
  • the curve marked with squares (without intermediate layer) runs significantly below the target curve up to over 30 ° C and only surpasses it at around 40 ° C with a peak.
  • the anti-drone coating without an intermediate layer is therefore only better at higher temperatures than the coating according to the invention when using a single-layer epoxy resin composition as a damping layer 3. It can therefore be used, for example, for the engine compartment, but is rather unsuitable for sheet metal for the vehicle interior.
  • FIG. 5 shows the anti-noise effect of a coating similar to FIG. 4 with an intermediate layer made of EVA and a damping layer made of styrene.
  • FIGS. 4 and 5 correspond to a layer structure according to FIG. 2, EVA or butyl being particularly preferably used as the intermediate layer and bitumen, styrene or an epoxy resin composition being particularly preferably used as the damping layer.
  • This layer structure has a thickness of 1.7 mm with a weight per unit area of 2.4 kg / m 2 .
  • FIG. 6 relates to a structure according to FIG. 3 with a relatively “thick” intermediate layer 2 and stiffening layer 4. From FIG compared to the previous damping curves there is a considerably improved dehumidification effect of the stiffening layer 4 applied to the component 1 by means of the intermediate layer 2.
  • the loss factor lies over the entire temperature range from approximately -20 ° C. to +60 ° C. above the setpoint curve from FIG. 4, here as the intermediate layer 2 butyl and as a stiffening layer 4 with advantage epoxy resin is used.
  • Other advantageous materials for the intermediate layer 2 are bitumen or rubber and acrylate for the stiffening layer 4.
  • the total thickness of this layer structure is 2.0 mm, while the weight per unit area was 3.1 kg / m 2 .
  • FIG. 7 shows an improved dehumidifying effect of a layer structure according to FIG. 1, in particular in the upper temperature profile from approximately 10 ° C. compared to FIG.
  • Particularly preferred materials are 2 butyl for the intermediate layer, 3 bitumen for the damping layer and 4 epoxy resin composition for the stiffening layer.
  • the total layer thickness of this structure is 1.6 mm with a basis weight of 2.58 kg / m 2 .
  • a three-layer structure of the anti-drumming coating consisting of intermediate layer 2, damping layer 3 and stiffening layer 4 has about the same good acoustic damping properties as a structure according to FIG. 3 with a 40% reduced thickness and approximately 17% reduced basis weight and with approximately the same basis weight and about the same layer thickness as in a layer structure according to FIG. 2, acoustic damping values improved considerably.
  • FIG. 8 schematically shows a device according to the invention for applying the de-drone coating 5 with intermediate layer 2 to a component 1.
  • a coextrusion nozzle 6 is advantageously installed on a robot (not shown) and with flexible material supply lines to metering systems such as two extruders 7a and 7b connected.
  • the dosing systems must be controllable separately, both in print mode and also in volume mode to achieve a defined material layer structure in the coextrusion nozzle.
  • the corresponding materials used for the coating can be stored in granular form in a central material container (not shown) and can be supplied to the individual take-off points of the steaming agent application, that is to say the extruders 7a and 7b in the production line, via supply lines, for example via compressed air and corresponding valves.
  • thermoplastic materials these are melted for application by means of the extruders and brought to pump viscosity and fed to the metering system with the coextrusion nozzle 6 as a pasty acoustic mass.
  • the individual layers are advantageously brought together only shortly before or shortly after the nozzle mouth 8 in order to achieve a defined material confluence and a defined layer thickness of the anti-drumming coating.
  • the robot travels with the extruders 7a, 7b under the granule feed line and new granulate is picked up, for example, via a funnel system.
  • This process saves the process of changing the barrel at each dam application station and drastically reduces the maintenance costs of the system, since the heating hoses that connect the robots and the supply system can be dispensed with.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant d'insonoriser des composants capables d'osciller, tels que des tôles, en reliant un revêtement antibruit (5) à un composant (1). Selon ladite invention, au moins une couche intermédiaire (2) est appliquée entre le revêtement antibruit (5) et le composant capable d'osciller (1). Cette couche intermédiaire (2) offre l'avantage d'être une couche d'adhésif en particulier élastomère appliquée à l'état coulant avant ou conjointement avec le revêtement antibruit (5), p. ex. par co-extrusion. A cet effet, une matière servant à l'adhérence peut être utilisée comme matière pour la couche intermédiaire et une matière servant à l'isolation acoustique peut être utilisée comme matière pour le revêtement antibruit. Cette invention concerne également un revêtement correspondant et un dispositif appliquant ce revêtement de façon automatique p. ex. sur des tôles.
PCT/EP2003/013593 2003-02-21 2003-12-02 Procede et dispositif permettant d'insonoriser des composants capables d'osciller, tels que des toles, et revetement a cet effet WO2004073984A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03785713A EP1590176A1 (fr) 2003-02-21 2003-12-02 Procede et dispositif permettant d'insonoriser des composants capables d'osciller, tels que des toles, et revetement a cet effet
AU2003294769A AU2003294769A1 (en) 2003-02-21 2003-12-02 Method and device for soundproofing oscillatory components, such as sheet metal, and coating therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10307350.7 2003-02-21
DE10307350 2003-02-21
DE10342753.8 2003-09-16
DE10342753A DE10342753B4 (de) 2003-02-21 2003-09-16 Verfahren und Vorrichtung zum Entdröhnen von schwingfähigen Bauteilen, wie Blechen, und Beschichtung hierzu

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WO2004073984A1 true WO2004073984A1 (fr) 2004-09-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2067604A2 (fr) * 2007-12-06 2009-06-10 Daimler AG Procédé de fabrication d'un composant et composant pour un véhicule automobile
CN103556788A (zh) * 2013-08-09 2014-02-05 广西青龙化学建材有限公司 一种自粘防水卷材和其制备方法以及使用方法
CN105370345A (zh) * 2015-12-07 2016-03-02 天津博威动力设备有限公司 一种用于柴油机的声波吸收材料

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034848A1 (de) * 1980-09-16 1982-04-08 Rütgerswerke AG, 6000 Frankfurt Daempfungsfolie
EP0067060A1 (fr) * 1981-06-09 1982-12-15 Taiyo Steel Co., Ltd: Bande métallique revêtue et procédé pour sa fabrication
EP0466513A2 (fr) * 1990-07-12 1992-01-15 Nihon Sekiso Kogyo Kabushiki Kaisha Matériau amortisseur
EP0510974A1 (fr) * 1991-04-24 1992-10-28 Nichias Corporation Matériau amortisseur de vibration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034848A1 (de) * 1980-09-16 1982-04-08 Rütgerswerke AG, 6000 Frankfurt Daempfungsfolie
EP0067060A1 (fr) * 1981-06-09 1982-12-15 Taiyo Steel Co., Ltd: Bande métallique revêtue et procédé pour sa fabrication
EP0466513A2 (fr) * 1990-07-12 1992-01-15 Nihon Sekiso Kogyo Kabushiki Kaisha Matériau amortisseur
EP0510974A1 (fr) * 1991-04-24 1992-10-28 Nichias Corporation Matériau amortisseur de vibration

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2067604A2 (fr) * 2007-12-06 2009-06-10 Daimler AG Procédé de fabrication d'un composant et composant pour un véhicule automobile
EP2067604A3 (fr) * 2007-12-06 2009-07-29 Daimler AG Procédé de fabrication d'un composant et composant pour un véhicule automobile
CN103556788A (zh) * 2013-08-09 2014-02-05 广西青龙化学建材有限公司 一种自粘防水卷材和其制备方法以及使用方法
CN105370345A (zh) * 2015-12-07 2016-03-02 天津博威动力设备有限公司 一种用于柴油机的声波吸收材料

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AU2003294769A1 (en) 2004-09-09
EP1590176A1 (fr) 2005-11-02

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