EP0873453B1 - Process for manufacture of an acoustic panel and acoustic panel with sandwich construction - Google Patents

Process for manufacture of an acoustic panel and acoustic panel with sandwich construction Download PDF

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Publication number
EP0873453B1
EP0873453B1 EP96939889A EP96939889A EP0873453B1 EP 0873453 B1 EP0873453 B1 EP 0873453B1 EP 96939889 A EP96939889 A EP 96939889A EP 96939889 A EP96939889 A EP 96939889A EP 0873453 B1 EP0873453 B1 EP 0873453B1
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EP
European Patent Office
Prior art keywords
panel
layer
adhesive
acoustic panel
intermediate layer
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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.)
Expired - Lifetime
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EP96939889A
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German (de)
French (fr)
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EP0873453A1 (en
Inventor
Klaus Bender
Robert Wachter
Bernd Fiedler
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Wilhelmi Werke AG
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Wilhelmi Werke AG
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E04B2001/8471—Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24826—Spot bonds connect components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/647—Including a foamed layer or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/647—Including a foamed layer or component
    • Y10T442/652—Nonwoven fabric is coated, impregnated, or autogenously bonded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/665—Including a layer derived from a water-settable material [e.g., cement, gypsum, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y10T442/675—Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]

Definitions

  • the invention relates to a method for producing a Acoustic panel in sandwich construction as a component for sound-absorbing ceilings or walls in a room from a porous carrier plate and at least one the plate surface of the carrier plate facing the room provided porous cover layer with the backing plate is glued in such a way that the porosity of the cover layer is not disturbed.
  • the invention further relates to an acoustic panel in sandwich construction as a component for sound-absorbing ceilings or walls in a room from a porous carrier plate and at least one the plate surface of the carrier plate facing the room provided porous cover layer.
  • the characteristics of the preamble of the process claim 1 or the device claim 5, is the one described above Acoustic panel known, in which one consists of a porous, elastic synthetic resin existing carrier plate with regard their sound absorption level is improved when they (on one or both sides) with thin cover layers from one Fleece or fabric covered with glass, synthetic or natural fibers is, the shape stability in a known manner the entire acoustic ceiling can be improved.
  • the top layer (s) with the carrier plate is the Use of an adhesive provided, so applied should be that the porosity of the support plate and the top layers are not disturbed and the room air can circulate the acoustic panel.
  • the top layer a layer composite the actual top layer and a plasterboard use so that the controversial conditions can be met are.
  • the cover layer is by means of a binder attached to a base fabric; the same binder serves to glue the carrier fabric to the plasterboard, which is used in perforated execution to the desired sound permeability to the actual, to achieve sound-absorbing carrier plate.
  • a backing fabric for the top layer is unfavorable, because its structure is on the room side, visible surface of the cover layer especially if the acoustic panel is connected by means of a Printing plate is compressed, which is already due to the adhesive layer is required.
  • the carrier plate consists of a granulated with a binder, then secures otherwise such a compression also binds the individual grains.
  • the application of such a grit is already described in the patent DE 14 84 072 C3 where the binder envelops both the individual grains as well as the cohesion of the grains.
  • non-combustible acoustic panels of swollen pearlite or vermiculite as a grain for the carrier plate has been known for a long time, as well like the connection of the grain by means of an inorganic Binder. These acoustic panels also show the same Disadvantages, as already described in detail above have been.
  • the invention has therefore set itself the task Process for producing an acoustic panel of the beginning specify the specified type and an acoustic panel, where the stated shortcomings of the prior art avoided become and a statically relatively highly resilient Acoustic panel both good sound absorbing and non-flammable is trained.
  • the making of such Acoustic panel should be possible easily and inexpensively his.
  • the adhesive is supposed to increase the porosity of the acoustic panel not significantly affect.
  • the task is first performed by a method solved with the features of claim 1.
  • the intermediate layer and the outer layer are together and with the carrier plate by means of an adhesive grid applied adhesive connected, initially the outer layer and the intermediate layer on top of each other an underlay serving as an abutment can be placed, whereby furthermore the adhesive grid in the manner on top facing layer surface of the intermediate layer applied is that the halftone dots from the adhesive make up the intermediate layer penetrate and contact the outer layer, after which the grain of the carrier plate as Filling applied to the top layer prepared in this way and that finally the acoustic panel by means of a the carrier plate loading pressure plate is compressed.
  • the surface pressure on the top layer their application to the carrier plate is dependent on the thickness and consistency of the applied adhesive chosen that under the action of the pressure plate a sufficient fixed connection to the carrier plate without that the degree of coverage of the adhesive increases significantly becomes.
  • the function of the acoustic panel remains in this way obtained, and at the same time the fibers of the Fleece or the fabric of the top layer (s) evenly glued together.
  • the adhesive grid can be more or less wide-meshed trained and with little effort each Be adapted to the circumstances.
  • the grain is advantageously formed by grains of are coated with a binder that is used in compression the pressure plate binds the individual grains together, so that a stable carrier plate with high porosity is created.
  • the stiffness of the acoustic panel is increased when the surface of the carrier plate facing away from the room with a another top layer is provided on the bed the support plate before compression of the acoustic plate is launched.
  • This top layer can be made up of one piece Glass fiber fleece or the like exist.
  • a perfect, highly resilient connection of the different The acoustic panel is stratified if the bonded acoustic panel after compression by the Pressure plate is cured, preferably at a temperature between 140 and 250 ° C.
  • the acoustic panel can be on its panel surface facing away from the room the carrier plate with another, preferably undivided cover layer, for example from a relative coarse-pored and dimensionally stable fleece or fabric his.
  • the carrier plate advantageously consists of a granular Material that is cohesive, for example by means of a binder, interconnected grains becomes.
  • the grains preferably made of a mineral material such as expanded glass, expanded clay, basalt balls, pearlite or the like or a mixture formed by these, can have a grain size between 0.25 and 8 mm and, like the binder, from an inorganic Material.
  • a mineral material such as expanded glass, expanded clay, basalt balls, pearlite or the like or a mixture formed by these
  • the binder can have a grain size between 0.25 and 8 mm and, like the binder, from an inorganic Material.
  • There is water glass for the binder proven, preferably enriched with one or more Additives such as phosphates or the like.
  • the intermediate layer and / or the outer layer is a inorganic fleece or fabric preferably made of glass fibers suitable
  • the intermediate layer is best of a Glass fiber mat
  • the outer layer of a glass fiber fleece is formed.
  • the adhesive can form a point-by-point adhesive grid, the halftone dots formed by adhesive particles each of which is the backing plate, the intermediate layer and connects the outer layer together. It but it is also possible that the adhesive, in each case between the carrier plate and the cover layers and / or between the intermediate layer and the outer layer, as a lattice-shaped Adhesive grid is formed, for example in Form of an adhesive fleece. It preferably consists of a mixture of water glass and aggregates, in particular Phosphates.
  • An acoustic panel according to the invention is highly noise and also can be used in a heat-insulating manner and, in spite of this, has extraordinary low weight, high dimensional stability, without the covering layer (s) being applied over a large area Adhesive film attached to the carrier plate is (are).
  • the acoustic panel is sufficient for an inventive one Production of all fire protection requirements and can be manufactured economically.
  • an acoustic panel according to the invention A can be seen which consists of a carrier plate T and there is a cover layer D, (Fig.1) the cover layer D fixed on a plate surface F facing a space R. shall be.
  • the cover layer D lies on one in the Drawing omitted stationary, flat base, which continue to act as an abutment when compressing the acoustic panel A serves.
  • the carrier plate T is made up of a bulk TS of individual Grains TK by pressing using a pressure plate P manufactured.
  • Fig.1 are the loose fill TS of the grains TK and in Fig.2 the sintered from it Grain TK 'of the carrier plate T symbolically indicated.
  • the Grains TK are from the start with a binder coated, which after pressing the bulk TS Cohesion of the grain TK 'causes.
  • the cover layer D consists of a plate surface F. contacting intermediate layer DZ and a room R facing Outer layer DA, both of which are designed to cover the entire surface are.
  • the intermediate layer DZ is made of a relative coarse-pored and rigid, the outer layer DA, however made from a fine-pored, flexible fleece.
  • the outer layer DA and the intermediate layer are shown in FIG Double room laid on top of each other and dot-matrix with one Adhesive K covered, which concentrates in the halftone dots is; its quantity and consistency as well as the porosity the intermediate layer DZ are dimensioned so that the Adhesive particles K 'in the halftone dots alone their gravity and by the loading from the bed TS penetrate the intermediate layer DZ and the outer layer Contact DA or flow into their surface to a limited extent.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

PCT No. PCT/EP96/05150 Sec. 371 Date Jul. 9, 1998 Sec. 102(e) Date Jul. 9, 1998 PCT Filed Nov. 22, 1996 PCT Pub. No. WO97/25491 PCT Pub. Date Jul. 17, 1997A dimensionally stable and fireproof acoustic panel includes an underlying panel covered on one or both sides by a cover panel. The underlying panel can be produced with a cover layer on the interior side thereof. The cover layer is composed of two layers, a coarse-pored stabilizing intermediate layer which in turn is covered by a second, fine-pored outer layer, both of which are bonded to one another and to the underlying panel by a matrix of adhesive material.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Akustikplatte in Sandwich-Bauweise als Bauelement für schallabsorbierende Decken oder Wände in einem Raum, bestehend aus einer porösen Trägerplatte und einer zumindest auf der dem Raum zugewandten Plattenfläche der Trägerplatte vorgesehenen porösen Deckschicht, die mit der Trägerplatte derart verklebt ist, daß dadurch die Porosität der Deckschicht nicht gestört ist. Weiterhin betrifft die Erfindung eine Akustikplatte in Sandwich-Bauweise als Bauelement für schallabsorbierende Decken oder Wände in einem Raum, bestehend aus einer porösen Trägerplatte und einer zumindest auf der dem Raum zugewandten Plattenfläche der Trägerplatte vorgesehenen porösen Deckschicht.The invention relates to a method for producing a Acoustic panel in sandwich construction as a component for sound-absorbing ceilings or walls in a room from a porous carrier plate and at least one the plate surface of the carrier plate facing the room provided porous cover layer with the backing plate is glued in such a way that the porosity of the cover layer is not disturbed. The invention further relates to an acoustic panel in sandwich construction as a component for sound-absorbing ceilings or walls in a room from a porous carrier plate and at least one the plate surface of the carrier plate facing the room provided porous cover layer.

Aus der DE-U- 93 00 151 ,die die Merkmale des Oberbegriffes des Verfahrensanspruchs 1 bzw. des Vorrichtungsanspruchs 5 aufweist, ist die vorstehend beschriebene Akustikplatte bekannt, bei der eine aus einem porösen, elastischen Kunstharz bestehende Trägerplatte hinsichtlich ihres Schallabsorptionsgrades verbessert wird, wenn sie (ein- oder beiderseits) mit dünnen Deckschichten aus einem Vlies oder Gewebe von Glas-, Kunst- oder Naturfasern bedeckt wird, wobei sich in bekannter Weise auch die Formstabilität der gesamten Akustikdecke verbessern läßt. Zur Verbindung der Deckschicht(en) mit der Trägerplatte ist die Verwendung eines Klebstoffes vorgesehen, der dabei so aufgetragen sein soll, daß die Porosität der Trägerplatte und der Deckschichten nicht gestört ist und die Raumluft durch die Akustikplatte zirkulieren kann.From DE-U-93 00 151 , the characteristics of the preamble of the process claim 1 or the device claim 5, is the one described above Acoustic panel known, in which one consists of a porous, elastic synthetic resin existing carrier plate with regard their sound absorption level is improved when they (on one or both sides) with thin cover layers from one Fleece or fabric covered with glass, synthetic or natural fibers is, the shape stability in a known manner the entire acoustic ceiling can be improved. For connection the top layer (s) with the carrier plate is the Use of an adhesive provided, so applied should be that the porosity of the support plate and the top layers are not disturbed and the room air can circulate the acoustic panel.

Aus der Offenlegungsschrift DE 31 47 174 A1 ist es auch bereits bekannt, für die Deckschicht einen Schichtverbund aus der eigentlichen Deckschicht und einer Gipskarton-Platte zu verwenden, so daß die kontroversen Bedingungen erfüllbar sind. Die Deckschicht ist dabei mittels eines Bindemittels auf einem Trägergewebe befestigt; das gleiche Bindemittel dient zum Verkleben des Trägergewebes mit der Gipskarton-Platte, die in gelochter Ausführung verwendet wird, um die gewünschte Schall-Durchlässigkeit zu der eigentlichen, schallabsorbierenden Trägerplatte zu erreichen.From DE 31 47 174 A1 it is already known for the top layer a layer composite the actual top layer and a plasterboard use so that the controversial conditions can be met are. The cover layer is by means of a binder attached to a base fabric; the same binder serves to glue the carrier fabric to the plasterboard, which is used in perforated execution to the desired sound permeability to the actual, to achieve sound-absorbing carrier plate.

Die Verwendung eines Trägergewebes für die Deckschicht ist ungünstig, weil sich dessen Struktur auf der raumseitigen, sichtbaren Oberfläche der Deckschicht abzeichnen kann, vor allem, wenn der Verbund der Akustikplatte mittels einer Druckplatte komprimiert wird, was bereits wegen der Klebeschicht erforderlich ist. Besteht die Trägerplatte aus einer mit einem Bindemittel versetzten Körnung, dann sichert im übrigen eine solche Kompression zugleich die Bindung der einzelnen Körner. Die Anwendung einer solchen Körnung ist bereits in der Patentschrift DE 14 84 072 C3 beschrieben worden, wo das Bindemittel sowohl die einzelnen Körner einhüllt als auch den Zusammenhalt der Körner bewirkt.The use of a backing fabric for the top layer is unfavorable, because its structure is on the room side, visible surface of the cover layer especially if the acoustic panel is connected by means of a Printing plate is compressed, which is already due to the adhesive layer is required. The carrier plate consists of a granulated with a binder, then secures otherwise such a compression also binds the individual grains. The application of such a grit is already described in the patent DE 14 84 072 C3 where the binder envelops both the individual grains as well as the cohesion of the grains.

Besonders für nichtbrennbare Akustikplatten ist die Verwendung von geblähten Perlitten oder Vermiculiten als Körnung für die Trägerplatte bereits seit langem bekannt, genauso wie die Verbindung der Körnung mittels eines anorganischen Bindemittels. Auch diese Akustikplatten zeigen die gleichen Nachteile, wie sie oben bereits ausführlich beschrieben worden sind.The use is particularly for non-combustible acoustic panels of swollen pearlite or vermiculite as a grain for the carrier plate has been known for a long time, as well like the connection of the grain by means of an inorganic Binder. These acoustic panels also show the same Disadvantages, as already described in detail above have been.

Die Erfindung hat sich deshalb die Aufgabe gestellt, ein Verfahren zur Herstellung einer Akustikplatte der eingangs näher bezeichneten Art sowie eine Akustikplatte anzugeben, wo die dargelegten Mängel des Standes der Technik vermieden werden und eine statisch verhältnismäßig hoch belastbare Akustikplatte sowohl gut schallschluckend als auch nichtbrennbar ausgebildet ist. Die Herstellung einer solchen Akustikplatte soll dabei problemlos und kostengünstig möglich sein. Der Klebstoff soll die Porigkeit der Akustikplatte nicht wesentlich beeinträchtigen.The invention has therefore set itself the task Process for producing an acoustic panel of the beginning specify the specified type and an acoustic panel, where the stated shortcomings of the prior art avoided become and a statically relatively highly resilient Acoustic panel both good sound absorbing and non-flammable is trained. The making of such Acoustic panel should be possible easily and inexpensively his. The adhesive is supposed to increase the porosity of the acoustic panel not significantly affect.

Erfindungsgemäß wird die Aufgabe zunächst durch ein Verfahren mit den Merkmalen des Anspruches 1 gelöst. Die Zwischenschicht und die Außenschicht werden miteinander und mit der Trägerplatte mittels eines in Form eines Klebstoff-Rasters aufgebrachten Klebstoffes verbunden, wobei zunächst die Außenschicht und die Zwischenschicht übereinander auf eine als Widerlager dienende Unterlage gelegt werden, wobei ferner der Klebstoff-Raster in der Weise auf die nach oben weisende Schichtfläche der Zwischenschicht aufgebracht wird, daß die Rasterpunkte aus dem Klebstoff die Zwischenschicht durchdringen und die Außenschicht kontaktieren, wobei danach die Körnung der Trägerplatte als Schüttung auf die so vorbereitete Deckschicht aufgebracht wird, und daß schließlich die Akustikplatte mittels einer die Trägerplatte belastenden Druckplatte komprimiert wird. According to the invention, the task is first performed by a method solved with the features of claim 1. The intermediate layer and the outer layer are together and with the carrier plate by means of an adhesive grid applied adhesive connected, initially the outer layer and the intermediate layer on top of each other an underlay serving as an abutment can be placed, whereby furthermore the adhesive grid in the manner on top facing layer surface of the intermediate layer applied is that the halftone dots from the adhesive make up the intermediate layer penetrate and contact the outer layer, after which the grain of the carrier plate as Filling applied to the top layer prepared in this way and that finally the acoustic panel by means of a the carrier plate loading pressure plate is compressed.

Auf diese Weise wird sichergestellt, daß der Klebstoff ganz gleichmäßig verteilt, jedoch nicht flächendeckend aufgebracht wird und von vornherein das Verhältnis der von dem Klebstoff bedeckten zu der von diesem freibleibenden Fläche gewahrt wird. Die Flächenpressung auf die Deckschicht bei deren Anlegen an die Trägerplatte wird in Abhängigkeit von der Dicke und Konsistenz des aufgetragenen Klebstoffes so gewählt, daß unter der Wirkung der Druckplatte eine ausreichend feste Verbindung mit der Trägerplatte erfolgt, ohne daß der Bedeckungsgrad des Klebstoffes wesentlich erhöht wird. Die Funktion der Akustikplatte bleibt auf diese Weise erhalten, und gleichzeitig werden dabei die Fasern des Vlieses oder des Gewebes der Deckschicht(en) gleichmäßig miteinander verklebt. Je nach dem verwendeten Klebstoff kann das Klebstoff-Raster mehr oder weniger weitmaschig ausgebildet und mit wenig Aufwand den jeweiligen Verhältnissen angepaßt werden.This ensures that the adhesive is completely evenly distributed, but not applied across the board and from the outset the relationship between that Adhesive covered to the area free of this is preserved. The surface pressure on the top layer their application to the carrier plate is dependent on the thickness and consistency of the applied adhesive chosen that under the action of the pressure plate a sufficient fixed connection to the carrier plate without that the degree of coverage of the adhesive increases significantly becomes. The function of the acoustic panel remains in this way obtained, and at the same time the fibers of the Fleece or the fabric of the top layer (s) evenly glued together. Depending on the adhesive used the adhesive grid can be more or less wide-meshed trained and with little effort each Be adapted to the circumstances.

Die Körnung wird vorteilhaft von Körnern gebildet, die von einem Bindemittel überzogen sind, das bei der Kompression der Druckplatte die einzelnen Körner aneinander bindet, so daß eine stabile Trägerplatte hoher Porigkeit entsteht.The grain is advantageously formed by grains of are coated with a binder that is used in compression the pressure plate binds the individual grains together, so that a stable carrier plate with high porosity is created.

Die Formsteifigkeit der Akustikplatte wird erhöht, wenn die dem Raum abgewandte Plattenfläche der Trägerplatte mit einer weiteren Deckschicht versehen wird, die auf die Schüttung der Trägerplatte vor der Kompression der Akustikplatte aufgelegt wird. Diese Deckschicht kann ungeteilt aus einem Glasfaservlies oder dergleichen bestehen.The stiffness of the acoustic panel is increased when the the surface of the carrier plate facing away from the room with a another top layer is provided on the bed the support plate before compression of the acoustic plate is launched. This top layer can be made up of one piece Glass fiber fleece or the like exist.

Eine einwandfreie, hoch belastbare Verbindung der verschiedenen Schichtungen der Akustikplatte ergibt sich, wenn die verklebte Akustikplatte nach der Kompression durch die Druckplatte ausgehärtet wird, vorzugsweise bei einer Temperatur zwischen 140 und 250°C. A perfect, highly resilient connection of the different The acoustic panel is stratified if the bonded acoustic panel after compression by the Pressure plate is cured, preferably at a temperature between 140 and 250 ° C.

Die Aufgabe hinsichtlich der Akustikplatte wird durch die Merkmale des Anspruches 5 gelöst.The task regarding the acoustic panel is performed by the Features of claim 5 solved.

Die Akustikplatte kann auf ihrer dem Raum abgewandte Plattenfläche der Trägerplatte mit einer weiteren, vorzugsweise ungeteilten Deckschicht, beispielsweise aus einem relativ grobporigen und formsteifen Vlies oder Gewebe, versehen sein.The acoustic panel can be on its panel surface facing away from the room the carrier plate with another, preferably undivided cover layer, for example from a relative coarse-pored and dimensionally stable fleece or fabric his.

Die Trägerplatte besteht vorteilhaft aus einem körnigen Werkstoff, der von stoffschlüssig, beispielsweise mittels eines Bindemittels, miteinander verbundenen Körnern gebildet wird.The carrier plate advantageously consists of a granular Material that is cohesive, for example by means of a binder, interconnected grains becomes.

Die Körner, vorzugsweise aus einem mineralischen Material wie Blähglas, Blähton, Basaltkugeln, Perlitten oder dergleichen oder einem von diesen gebildeten Gemisch bestehend, können eine Korngröße zwischen 0,25 und 8 mm aufweisen und, wie auch das Bindemittel, aus einem anorganischen Werkstoff bestehen. Für das Bindemittel hat sich Wasserglas bewährt, vorzugsweise angereichert mit einem oder mehreren Zuschlagstoffen wie Phosphaten oder dergleichen.The grains, preferably made of a mineral material such as expanded glass, expanded clay, basalt balls, pearlite or the like or a mixture formed by these, can have a grain size between 0.25 and 8 mm and, like the binder, from an inorganic Material. There is water glass for the binder proven, preferably enriched with one or more Additives such as phosphates or the like.

Für die Zwischenschicht und/oder die Außenschicht ist ein anorganisches Vlies oder Gewebe vorzugsweise aus Glasfasern geeignet, wobei die Zwischenschicht am besten von einer Glasfaser-Matte, die Außenschicht hingegen von einem Glasfaser-Vlies gebildet wird.For the intermediate layer and / or the outer layer is a inorganic fleece or fabric preferably made of glass fibers suitable, the intermediate layer is best of a Glass fiber mat, the outer layer of a glass fiber fleece is formed.

Der Klebstoff kann ein punktweises Klebstoff-Raster ausbilden, wobei die Rasterpunkte von Klebstoff-Partikeln gebildet werden, deren jeder einzelne die Trägerplatte, die Zwischenschicht und die Außenschicht miteinander verbindet. Es ist aber ebenso möglich, daß der Klebstoff, jeweils zwischen der Trägerplatte und den Deckschichten und/oder zwischen der Zwischenschicht und der Außenschicht, als gitterförmiges Klebstoff-Raster ausbildet ist, beispielsweise in Form eines Klebevlieses. Er besteht bevorzugt aus einem Gemisch von Wasserglas und Zuschlagstoffen, insbesondere Phosphaten.The adhesive can form a point-by-point adhesive grid, the halftone dots formed by adhesive particles each of which is the backing plate, the intermediate layer and connects the outer layer together. It but it is also possible that the adhesive, in each case between the carrier plate and the cover layers and / or between the intermediate layer and the outer layer, as a lattice-shaped Adhesive grid is formed, for example in Form of an adhesive fleece. It preferably consists of a mixture of water glass and aggregates, in particular Phosphates.

Eine erfindungsgemäße Akustikplatte ist hoch lärm- und auch wärmeisolierend verwendbar und besitzt dabei trotz des außerordentlich geringen Gewichtes eine hohe Formsteifigkeit, ohne daß die Deckschicht(en) mittels eines flächig aufgetragenen Klebstoff-Filmes auf der Trägerplatte befestigt ist (sind). Die Akustikplatte genügt bei einer erfindungsgemäßen Anfertigung auch allen Anforderungen des Brandschutzes und kann kostensparend hergestellt werden.An acoustic panel according to the invention is highly noise and also can be used in a heat-insulating manner and, in spite of this, has extraordinary low weight, high dimensional stability, without the covering layer (s) being applied over a large area Adhesive film attached to the carrier plate is (are). The acoustic panel is sufficient for an inventive one Production of all fire protection requirements and can be manufactured economically.

Die Erfindung wird nachstehend an Hand der Zeichnung an einem Ausführungsbeispiel näher erläutert. Es zeigen

Fig.1
eine erfindungsgemäße Akustikplatte in einer ersten Phase ihrer Herstellung und
Fig.2
die fertige Akustikplatte,
beide in schematischer, räumlicher Darstellung.The invention is explained below with reference to the drawing using an exemplary embodiment. Show it
Fig. 1
an acoustic panel according to the invention in a first phase of its manufacture and
Fig. 2
the finished acoustic panel,
both in a schematic, spatial representation.

In der Fig.1 der Zeichnung ist eine erfindungsgemäße Akustikplatte A zu erkennen, die aus einer Trägerplatte T und einer Deckschicht D besteht, wobei (Fig.1) die Deckschicht D auf einer einem Raum R zugewandten Plattenfläche F fixiert werden soll. Die Deckschicht D liegt auf einer in der Zeichnung weggelassenen ortsfesten, ebenen Unterlage auf, die weiterhin als Widerlager bei der Kompression der Akustikplatte A dient.1 of the drawing is an acoustic panel according to the invention A can be seen which consists of a carrier plate T and there is a cover layer D, (Fig.1) the cover layer D fixed on a plate surface F facing a space R. shall be. The cover layer D lies on one in the Drawing omitted stationary, flat base, which continue to act as an abutment when compressing the acoustic panel A serves.

Die Trägerplatte T wird aus einer Schüttung TS von einzelnen Körnern TK durch Verpressen mittels einer Druckplatte P hergestellt. In der Fig.1 sind die lose Schüttung TS der Körner TK und in der Fig.2 die daraus gesinterte Körnung TK' der Trägerplatte T symbolisch angedeutet. Die Körner TK sind von vornherein mit einem Bindemittel überzogen, das nach dem Verpressen der Schüttung TS den Zusammenhalt der Körnung TK' bewirkt.The carrier plate T is made up of a bulk TS of individual Grains TK by pressing using a pressure plate P manufactured. In Fig.1 are the loose fill TS of the grains TK and in Fig.2 the sintered from it Grain TK 'of the carrier plate T symbolically indicated. The Grains TK are from the start with a binder coated, which after pressing the bulk TS Cohesion of the grain TK 'causes.

Mit ihrer dem Raum R zugewandten Plattenfläche F wird die Trägerplatte T mit der Deckschicht D durch einen Klebstoff K verbunden.With its plate surface F facing the space R, the Carrier plate T with the cover layer D by an adhesive K connected.

Die Deckschicht D besteht aus einer die Plattenfläche F kontaktierenden Zwischenschicht DZ und einer dem Raum R zugewandten Außenschicht DA, die beide flächendeckend ausgebildet sind. Die Zwischenschicht DZ ist aus einem relativ grobporigen und formsteifen, die Außenschicht DA hingegen aus einem feinporigen, biegsamen Vlies ausgebildet.The cover layer D consists of a plate surface F. contacting intermediate layer DZ and a room R facing Outer layer DA, both of which are designed to cover the entire surface are. The intermediate layer DZ is made of a relative coarse-pored and rigid, the outer layer DA, however made from a fine-pored, flexible fleece.

In der Fig.1 sind die Außenschicht DA und die Zwischenschicht DZ aufeinander gelegt und punktrasterförmig mit einem Klebstoff K bedeckt, der in den Rasterpunkte konzentriert ist; seine Menge und Konsistenz sowie die Porigkeit der Zwischenschicht DZ sind so bemessen, daß die Klebstoff-Partikel K' in den Rasterpunkten allein durch ihre Schwerkraft und durch die Belastung aus der Schüttung TS die Zwischenschicht DZ durchdringen und die Außenschicht DA kontaktieren bzw. begrenzt in deren Oberfläche einfließen.The outer layer DA and the intermediate layer are shown in FIG Double room laid on top of each other and dot-matrix with one Adhesive K covered, which concentrates in the halftone dots is; its quantity and consistency as well as the porosity the intermediate layer DZ are dimensioned so that the Adhesive particles K 'in the halftone dots alone their gravity and by the loading from the bed TS penetrate the intermediate layer DZ and the outer layer Contact DA or flow into their surface to a limited extent.

Danach wird entsprechend Fig.2 die Druckplatte P abgesenkt und die Akustikplatte A verpreßt; anschließend erfolgt die Aushärtung des Klebstoffes K, worauf die nunmehr endgültige Akustikplatte A wieder entlastet wird. Then the pressure plate P is lowered in accordance with FIG and the acoustic panel A presses; then the Hardening of the adhesive K, whereupon the now final Acoustic panel A is relieved.

Aufstellung der BezugszeichenList of reference numbers

AA
AkustikplatteAcoustic panel
DD
DeckschichtTop layer
DATHERE
AußenschichtOuter layer
DZDZ
ZwischenschichtIntermediate layer
FF
PlattenflächePlate surface
KK
Klebstoffadhesive
K'K '
Klebstoff-PartikelAdhesive particles
PP
Druckplatteprinting plate
RR
Raumroom
TT
TrägerplatteCarrier plate
TKTK
KörnerGrains
TK'TK '
KörnungGrit
TSTS
SchüttungFill

Claims (17)

  1. A method of manufacturing an acoustic panel (A) of sandwich construction as a structural component for sound-absorbing ceilings or walls in a room (R), comprising a porous carrier panel (T) and a porous covering layer (D) provided at least on the panel surface (F) of the carrier panel (T) facing into the room, the said porous covering layer (D) being bonded to the carrier panel (T) in such a way that the porosity of the covering layer is not disturbed thereby, characterised in that the covering layer (D) is composed of an intermediate layer (DZ) directly adjacent to the panel surface (F) of the carrier panel (T) and a visible outer layer (DA) facing into the room, the intermediate layer (DZ) consisting of a relatively large-pore and dimensionally stable non-woven or woven fabric, whereas the outer layer (DA) consists of a relatively fine-pore and flexible non-woven or woven fabric, the intermediate layer (DZ) and the outer layer (DA) being bonded to each other and to the carrier panel (T) by means of an adhesive (K) applied in the form of an adhesive grid, in which
    a) the outer layer (DA) and the intermediate layer (DZ) are first of all laid on top of one another on a base serving as a support,
    b) the adhesive grid is applied to the upwards-facing layer surface of the intermediate layer (DZ) in such a way that the grid points penetrate the intermediate layer (DZ) from the adhesive (K) and contact the outer layer (DA),
    c) the carrier panel (T) is applied to the thus prepared covering layer (D) in the form of a bulk material (TS) consisting of a granulate (TK'), and
    d) the acoustic panel (A) is thereafter compressed by means of a pressure panel (P) loading the carrier panel (T).
  2. A method according to Claim 1, characterised in that the granulate (TK') is formed of granules (TK) coated with a bonding agent which bonds the granules (TK) to one another when compressed by the pressure panel (P).
  3. A method according to Claim 1 or 2, characterised in that the panel surface (F) of the carrier panel (T) facing away from the room (R) is provided with another covering layer (D) which is placed on to the bulking material (TS) of the carrier panel (T) prior to compression of the acoustic panel (A).
  4. A method according to Claim 1 to 3, characterised in that, following compression by the pressure panel (P), the glued acoustic panel (A) is hardened, preferably at a temperature between 180 and 250 °C.
  5. An acoustic panel in sandwich construction as a structural component for sound-absorbing ceilings or walls in a room (R), comprising a porous carrier panel (T) and a porous covering layer (D) provided at least on the panel surface (F) of the carrier panel (T) facing into the room (R),
    characterised in that
    the covering layer (D) is composed of an intermediate layer (DZ) directly adjacent to the panel surface (F) of the carrier panel (T) and a visible outer layer (DA) facing into the room (R), the intermediate layer (DZ) consisting of a relatively large-pore and dimensionally stable non-woven or woven fabric, whereas the outer layer (DA) consists of a relatively fine-pore and flexible non-woven or woven fabric, and the intermediate layer (DZ) and the outer layer (DA) are bonded to one another and to the carrier panel (T) by means of an adhesive (K) which contacts the glued-together surfaces only partially in the form of an adhesive grid.
  6. An acoustic panel according to Claim 5, characterised in that the panel surface (F) of the carrier panel (T) facing away from the room (R) is provided with another, preferably undivided covering layer (D), made for example from a relatively large-pore and dimensionally stable non-woven or woven fabric.
  7. An acoustic panel according to Claim 5 or 6, characterised in that the carrier panel (T) consists of a granular material formed of granules (TK) integrally bonded with each other, for example by means of a bonding agent.
  8. A method and acoustic panel according to one of Claims 1, 2 or 7, characterised in that the granules (TK) have a particle size between 0.25 and 8 mm.
  9. A method and acoustic panel according to one of Claims 1, 2, 7, or 8, characterised in that the granules (TK) and/or the bonding agent each consist of an inorganic material.
  10. A method and acoustic panel according to Claim 9, characterised in that the granules (TK) consist of a mineral material such as swelling glass, swelling clay, basalt balls, perlites or the like, or a mixture thereof.
  11. A method and acoustic panel according to Claim 9 or 10, characterised in that the bonding agent consists of water glass, preferably enriched with one or more additives such as phosphates or the like.
  12. A method and acoustic panel according to one of Claims 1 to 11, characterised in that the intermediate layer (DZ) and/or the outer layer (DA) consist of an inorganic non-woven or woven fabric, preferably of glass fibres.
  13. A method and acoustic panel according to Claim 12, characterised in that the intermediate layer (DZ) is formed from a glass-fibre mat.
  14. A method and acoustic panel according to Claim 12 or 13, characterised in that the outer layer (DA) is formed from a glass-fibre and/or polyester non-woven fabric.
  15. A method and acoustic panel according to Claims 1 to 14, characterised in that the adhesive (K) forms a punctiform adhesive grid, the points of the grid being formed from adhesive particles (K'), each individual one of which bonds the carrier panel (T), the intermediate layer (DZ) and the outer layer (DA) with one another.
  16. A method and acoustic panel according to one of Claims 1 to 15, characterised in that the adhesive (K) is in each case formed between the carrier panel (T) and the covering layers (D) and/or between the intermediate layer (DZ) and the outer layer (DA) as a latticed grid of adhesive, for example in the form of an adhesive non-woven fabric.
  17. A method and acoustic panel according to one of Claims 1 to 16, characterised in that the adhesive (K) is composed of a mixture of water glass and additives, particularly phosphates.
EP96939889A 1996-01-10 1996-11-22 Process for manufacture of an acoustic panel and acoustic panel with sandwich construction Expired - Lifetime EP0873453B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19600586 1996-01-10
DE19600586A DE19600586A1 (en) 1996-01-10 1996-01-10 Process for the production of an acoustic panel and acoustic panel in sandwich construction
PCT/EP1996/005150 WO1997025491A1 (en) 1996-01-10 1996-11-22 Process for manufacture of an acoustic panel and acoustic panel with sandwich construction

Publications (2)

Publication Number Publication Date
EP0873453A1 EP0873453A1 (en) 1998-10-28
EP0873453B1 true EP0873453B1 (en) 2001-08-16

Family

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EP96939889A Expired - Lifetime EP0873453B1 (en) 1996-01-10 1996-11-22 Process for manufacture of an acoustic panel and acoustic panel with sandwich construction

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US (1) US6057254A (en)
EP (1) EP0873453B1 (en)
CN (1) CN1079474C (en)
AT (1) ATE204354T1 (en)
DE (2) DE19600586A1 (en)
DK (1) DK0873453T3 (en)
ES (1) ES2159364T3 (en)
PT (1) PT873453E (en)
TW (1) TW333639B (en)
WO (1) WO1997025491A1 (en)

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Publication number Publication date
PT873453E (en) 2001-11-30
US6057254A (en) 2000-05-02
ATE204354T1 (en) 2001-09-15
DK0873453T3 (en) 2001-11-05
EP0873453A1 (en) 1998-10-28
ES2159364T3 (en) 2001-10-01
CN1207790A (en) 1999-02-10
DE59607517D1 (en) 2001-09-20
CN1079474C (en) 2002-02-20
DE19600586A1 (en) 1997-07-17
TW333639B (en) 1998-06-11
WO1997025491A1 (en) 1997-07-17

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