EP0873453B1 - Procede de fabrication d'un panneau acoustique, et panneau acoustique a construction en sandwich - Google Patents

Procede de fabrication d'un panneau acoustique, et panneau acoustique a construction en sandwich 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
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.)
Expired - Lifetime
Application number
EP96939889A
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German (de)
English (en)
Other versions
EP0873453A1 (fr
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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Publication date
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Classifications

    • 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.

Landscapes

  • 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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Claims (17)

  1. Procédé de fabrication d'un panneau acoustique (A) à structure sandwich servant d'élément structurel pour des plafonds ou parois à absorption acoustique dans une pièce (R), constitué d'un panneau de support (T) poreux et d'une couche de recouvrement (D) poreuse qui est prévue au moins sur la surface (F) du panneau porteur (T) qui fait face à la pièce (R) et qui est collée au panneau porteur (T) d'une manière telle que, de ce fait, la porosité de la couche de recouvrement ne soit pas détériorée,
       caractérisé en ce que la couche de recouvrement (D) est composée d'une couche intermédiaire (DZ), appliquée directement sur la surface (F) du panneau porteur (T), et d'une couche extérieure (DA)visible, située du côté de la pièce (R), la couche intermédiaire (DZ) étant constituée d'un feutre ou produit tissé à pores relativement grossiers et indéformable et, au contraire, la couche extérieure (DA) constituée d'un feutre ou produit tissé à pores relativement fins et souple, la couche intermédiaire (DZ) et la couche extérieure (DA) étant rendues solidaires l'une de l'autre et du panneau porteur (T) au moyen d'une substance adhésive (K) appliquée sous forme d'un motif de substance adhésive, et en ce que
    (a) la couche extérieure (DA) et la couche intermédiaire (DZ) sont d'abord posées l'une au-dessus de l'autre sur un support servant de contre-appui,
    (b) le motif de substance adhésive est appliqué sur la surface de couche de la couche intermédiaire (DZ) qui est tournée vers le haut, d'une manière telle que les points de motif formés de la substance adhésive (K) traversent la couche intermédiaire (DZ) et viennent au contact de la couche extérieure (DA),
    (c) le panneau porteur (T) est appliqué, sous forme d'une matière en vrac (TS) constituée d'une matière granulée (TK'), sur la couche de recouvrement (D) ainsi préparée au préalable et,
    d) ensuite, le panneau acoustique (A) est comprimé au moyen d'une plaque de compression (P) appliquant une contrainte sur le panneau porteur (T).
  2. Procédé suivant la revendication 1, caractérisé en ce que la matière granulée (TK') est formée de grains (TK) qui sont revêtus d'un agent de liaison qui relie les grains (TK) les uns aux autres lors de la compression par la plaque de compression (P).
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que la surface (F) du panneau porteur (P) qui est située du côté opposé à la pièce (R) est pourvue d'une autre couche de revêtement (D) qui est appliquée sur la matière en vrac (TS) du panneau porteur (T) avant la compression du panneau acoustique (A).
  4. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce qu'après la compression au moyen de la plaque de compression (P), le panneau acoustique (A) collé est durci, de préférence à une température comprise entre 180 et 250 °C.
  5. Panneau acoustique à structure sandwich servant d'élément structurel pour des plafonds ou parois à absorption acoustique dans une pièce (R), constitué d'un panneau de support (T) poreux et d'une couche de recouvrement (D) poreuse qui est prévue au moins sur la surface (F) du panneau porteur (T) qui fait face à la pièce (R), caractérisé en ce que
       la couche de recouvrement (D) est composée d'une couche intermédiaire (DZ), appliqué directement sur la surface (F) du panneau porteur (T), et d'une couche extérieure (DA) visible, située du côté de la pièce (R), la couche intermédiaire (DZ) étant constituée d'un feutre ou produit tissé à pores relativement grossiers et indéformable et, au contraire, la couche extérieure (DA) d'un feutre ou produit tissé à pores relativement fins et souple et la couche intermédiaire (DZ) et la couche extérieure (DA) sont rendues solidaires l'une de l'autre et du panneau porteur (T) au moyen d'une substance adhésive (K) qui ne vient au contact des surfaces collées entre elles que d'une manière partielle, sous forme d'un motif de substance adhésive.
  6. Panneau acoustique suivant la revendication 5, caractérisé en ce que la surface (F) du panneau porteur (T) qui est située du côté opposé à la pièce (R) est pourvue d'une autre couche de revêtement (D) , de préférence non divisée, par exemple formée d'un feutre ou produit tissé à pores relativement grossiers et indéformable.
  7. Panneau acoustique suivant la revendication 5 ou 6, caractérisé en ce que le panneau porteur (T) est constitué d'une matière granulée qui est formée de grains rendus solidaires les uns des autres, par exemple au moyen d'un agent de liaison, de façon à présenter une solidarisation due à la présence d'une matière.
  8. Procédé et panneau acoustique suivant l'une des revendications 1, 2 ou 7, caractérisés en ce que les grains (TK) ont une taille de grain comprise entre 0,25 et 8 mm.
  9. Procédé et panneau acoustique suivant l'une des revendications 1, 2, 7 ou 8, caractérisés en ce que les grains (TK) et/ou l'agent de liaison sont constitués chacun d'une matière non organique.
  10. Procédé et panneau acoustique suivant la revendication 9, caractérisés en ce que les grains (TK) sont constitués d'une matière minérale, telle que verre soufflé, argile expansée, billes de basalte, perlítes ou analogues ou un mélange formé de ceux-ci.
  11. Procédé et panneau acoustique suivant la revendication 9 ou 10, caractérisés en ce que l'agent de liaison est constitué de verre soluble, de préférence enrichi d'un ou plusieurs additifs, tels que phosphates ou analogues.
  12. Procédé et panneau acoustique suivant l'une des revendications 1 à 11, caractérisés en ce que la couche intermédiaire (DZ) et/ou la couche extérieure (DA) sont constituées d'un feutre ou produit tissé non organique, de préférence en fibre de verre.
  13. Procédé et panneau acoustique suivant la revendication 12, caractérisés en ce que la couche intermédiaire (DZ) est formée d'un mat de fibre de verre.
  14. Procédé et panneau acoustique suivant la revendication 12 ou 13, caractérisés en ce que la couche extérieure (DA) est formée d'un feutre en fibre de verre et/ou polyester.
  15. Procédé et panneau acoustique suivant l'une des revendications 1 à 14, caractérisés en ce que la substance adhésive (K) forme un motif de substance adhésive point par point, les points de motif étant formés de particules de substance adhésive (K') qui chacune individuellement relient entre eux le panneau porteur (T), la couche intermédiaire (DZ) et la couche extérieure (DA).
  16. Procédé et panneau acoustique suivant l'une des revendications 1 à 15, caractérisés en ce que la substance adhésive (K) est réalisée sous forme d'un motif de substance adhésive en forme de grille, par exemple sous forme d'un feutre adhésif, respectivement entre le panneau porteur (T) et les couches de recouvrement (D) et/ou entre la couche intermédiaire (DZ) et la couche extérieure (DA).
  17. Procédé et panneau acoustique suivant l'une des revendications 1 à 16, caractérisés en ce que la substance adhésive (K) est composée d'un mélange de verre soluble et d'additifs, notamment de phosphates.
EP96939889A 1996-01-10 1996-11-22 Procede de fabrication d'un panneau acoustique, et panneau acoustique a construction en sandwich Expired - Lifetime EP0873453B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19600586 1996-01-10
DE19600586A DE19600586A1 (de) 1996-01-10 1996-01-10 Verfahren zur Herstellung einer Akustikplatte und Akustikplatte in Sandwichbauweise
PCT/EP1996/005150 WO1997025491A1 (fr) 1996-01-10 1996-11-22 Procede de fabrication d'un panneau acoustique, et panneau acoustique a construction en sandwich

Publications (2)

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

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96939889A Expired - Lifetime EP0873453B1 (fr) 1996-01-10 1996-11-22 Procede de fabrication d'un panneau acoustique, et panneau acoustique a construction en sandwich

Country Status (10)

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

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DE19731910A1 (de) * 1997-07-24 1999-01-28 Wilhelmi Werke Ag Verfahren zum Herstellen von Verbundstoffen und -platten und Vorrichtung für dieses Verfahren
DE10053552A1 (de) * 2000-10-27 2002-05-16 Kaenner Karin Insbesondere plattenförmiger Formling
US20040131836A1 (en) * 2003-01-02 2004-07-08 3M Innovative Properties Company Acoustic web
US7320739B2 (en) * 2003-01-02 2008-01-22 3M Innovative Properties Company Sound absorptive multilayer composite
US20040231914A1 (en) * 2003-01-02 2004-11-25 3M Innovative Properties Company Low thickness sound absorptive multilayer composite
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US7500541B2 (en) * 2004-09-30 2009-03-10 Kimberly-Clark Worldwide, Inc. Acoustic material with liquid repellency
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Publication number Publication date
WO1997025491A1 (fr) 1997-07-17
TW333639B (en) 1998-06-11
CN1207790A (zh) 1999-02-10
EP0873453A1 (fr) 1998-10-28
CN1079474C (zh) 2002-02-20
DK0873453T3 (da) 2001-11-05
DE19600586A1 (de) 1997-07-17
ES2159364T3 (es) 2001-10-01
PT873453E (pt) 2001-11-30
ATE204354T1 (de) 2001-09-15
US6057254A (en) 2000-05-02
DE59607517D1 (de) 2001-09-20

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