WO2009023900A1 - Panneau acoustique - Google Patents

Panneau acoustique Download PDF

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Publication number
WO2009023900A1
WO2009023900A1 PCT/AU2008/001185 AU2008001185W WO2009023900A1 WO 2009023900 A1 WO2009023900 A1 WO 2009023900A1 AU 2008001185 W AU2008001185 W AU 2008001185W WO 2009023900 A1 WO2009023900 A1 WO 2009023900A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
layer
sound absorbing
absorbing layer
apertures
Prior art date
Application number
PCT/AU2008/001185
Other languages
English (en)
Inventor
Mark Borroni
Original Assignee
Bellmax Acoustic Pty Ltd
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 AU2007904442A external-priority patent/AU2007904442A0/en
Application filed by Bellmax Acoustic Pty Ltd filed Critical Bellmax Acoustic Pty Ltd
Priority to AU2008288674A priority Critical patent/AU2008288674B2/en
Publication of WO2009023900A1 publication Critical patent/WO2009023900A1/fr

Links

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
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0867—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
    • 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
    • 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
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element

Definitions

  • the present invention relates generally to acoustics. More particularly, the present invention relates to a panel which is acoustically transparent and/or absorbent relative to conventional plasterboard panels.
  • the panel according to the present invention is particularly suited for lining an interior wall of a building as a substitute to conventional plasterboard panels. It will therefore be convenient to describe the invention in relation to that example application. It should however be understood that the invention is equally suitable for lining other structures, for example ceilings.
  • the interior walls of buildings typically include a frame lined with plasterboard panels.
  • the frame of the wall normally includes a series of upright beams, commonly referred to as studs, to which the plasterboard panels are mounted.
  • the panels are mounted to the studs such that the ends of adjoining panels abut one another.
  • the ends are then covered with wet plaster and subsequently sanded when the plaster dries to provide a continuous wall surface.
  • the wall surface created by the plasterboard panels is also usually painted to provide an aesthetically pleasing appearance.
  • reverberation the time it takes for reverberant sound energy to dissipate by 60 dB is known as the reverberation time.
  • the reverberation time in an enclosure, for example a room can make a significant impact upon the intelligibility of speech. In this respect if the reverberation time is too long speech can be difficult to interpret as the reverberant sound in the room acts as background noise.
  • reverberation problems may not become apparent until construction of a building is completed.
  • reverberation issues include the use of perforated acoustic tiles, carpet, curtains, fabric wall linings and other soft materials. Unfortunately, many of these options are not able to adequately blend with the desired aesthetic appearance.
  • a panel including an outer portion and an inner portion.
  • the outer portion includes a membrane layer
  • the inner portion includes a sound absorbing layer having apertures therein.
  • the inner portion further includes a support layer having openings therein which, in conjunction with the apertures, define a plurality of passageways extending through the sound absorbing layer and the support layer, wherein sound waves incident on the membrane layer pass therethrough and into the passageways and/or sound absorbing layer.
  • the support layer is located between the membrane layer and the sound absorbing layer.
  • the apertures in the sound absorbing layer include sidewalls through which sound waves within the passageways may pass.
  • sound waves which propagate through the sidewalls may have their mechanical energy reduced by interacting with the sound absorbing layer.
  • a proportion of the mechanical energy of the sound waves can be converted to thermal energy due to friction.
  • the sound absorbing layer is made of a porous, fibrous material.
  • the apertures are preferably between approximately 4mm and 20mm in diameter and the sound absorbing layer preferably has a thickness of approximately 4 to 15mm.
  • the apertures in the sound absorbing layer are between approximately 10 to 15mm in diameter and the sound absorbing layer has a thickness of approximately 9mm.
  • the apertures in the sound absorbing layer cover between 10% and 50% of the surface area of the sound absorbing layer.
  • the sound absorbing layer is preferably bonded to the support layer and the support layer is preferably made of a rigid material. In this regard, the rigid material may be cardboard.
  • the openings in the support layer can overlie the apertures in the sound absorbing layer.
  • the membrane layer is made of paper, for example kraft paper.
  • the membrane layer is made of a polymer film or a paper having a foil backing.
  • the membrane layer is preferably bonded to the support layer and regions of the membrane layer which overlie the openings in the support layer and apertures in the sound absorbing layer can form a series of diaphragms.
  • a panel including an outer portion and an inner portion.
  • the outer portion includes a membrane layer
  • the inner portion includes a sound absorbing layer having apertures therein.
  • the inner portion further includes a first and second support layer having openings therein which, in conjunction with the apertures, define a plurality of passageways extending through the sound absorbing layer and the support layers, wherein sound waves incident on the membrane layer are able to pass therethrough and into the passageways and/or sound absorbing layer.
  • a panel including an outer portion and an inner portion.
  • the outer portion includes a membrane layer and the inner portion includes a sound absorbing layer having apertures therein which define a plurality of passageways extending through the sound absorbing layer, wherein sound waves incident on the membrane layer pass therethrough and into the passageways and/or sound absorbing layer.
  • a panel including an outer portion and an inner portion.
  • the outer portion includes a membrane layer and a sound absorbing layer having apertures therein.
  • the inner portion includes a support layer having openings therein. The openings, in conjunction with the apertures, define a plurality of passageways extending through the sound absorbing layer and the support layer. Sound waves incident on the membrane layer are able to pass therethrough and into the passageways and/or sound absorbing layer.
  • the inner portion of the panel according to the fourth aspect of the invention may further include a protective layer and the support layer may be located between the protective layer and the sound absorbing layer.
  • the protective layer is preferably air permeable and made of a fibrous material.
  • the support layer of the panel according to the fourth aspect of the invention is preferably made of a rigid material and may include a plurality of indentations. At least one of the indentations in the support layer preferably has side walls which extend around and converge towards one of the openings. In a particularly preferred embodiment, a multiple number of the indentations each include side walls which extend around and converge towards a respective opening.
  • the rigid material from which the support layer is constructed may be metal, for example aluminium.
  • the sound absorbing layer may be adhesively bonded to the support layer and assists to dampen any vibrational sound wave energy within the support layer.
  • the panel is a wall panel of a wall structure.
  • the wall structure includes a frame upon which panels may be fastened.
  • a plurality of panels are incorporated into the wall structure with the panels being mounted to the frame to provide a continuous wall surface.
  • the frame preferably includes a plurality of wall studs having sound absorbing material located there between.
  • the panels are mounted to the wall studs such that the inner portion faces towards the frame and the outer portion faces away from the frame with the membrane layer of each panel preferably lying flush with the membrane layer of adjoining panels.
  • each panel preferably has an overall thickness of approximately 10 mm, which matches the overall thickness of a conventional plasterboard panel. Accordingly, panels in accordance with the present invention are able to lie flush with adjoining conventional plasterboard panels when mounted to the frame.
  • the present invention advantageously provides a panel which is able to be incorporated into a wall structure to thereby provide the wall structure with optimal sound absorption properties compared with a wall structure consisting of only conventional plasterboard panels.
  • the acoustic transparency of the panels, relative to conventional plasterboard panels enables sound waves incident upon the membrane layer to pass there through and subsequently interact with the passageways and sound absorbing layer. Sound waves may also pass through the panel and subsequently be absorbed by sound absorbing material located between wall studs within the wall structure.
  • Figure 2 is an end view of a portion of the panel illustrated in Figure 1 ;
  • Figure 3 is a cross sectional view of a wall structure incorporating a plurality of panels illustrated in Figure 1 ;
  • Figure 4 is a cross sectional view of a portion of the wall structure illustrated in Figure 3, detailing the manner in which a panel as shown in Figure 1 is seamlessly joined to a conventional plasterboard panel;
  • Figure 5 is a perspective view of a side of a support layer of the panel, in accordance with another embodiment of the invention.
  • Figure 6 is an end view of a portion of a panel incorporating a support layer as illustrated in Figure 5, according to another embodiment of the invention;
  • Figure 7 is an end view of a portion of a panel incorporation a support layer similar to that shown in Figure 5, according to yet another embodiment of the invention;
  • Figure 8 is an end view of panel, according to yet another embodiment of the invention.
  • Figure 9 is an end view of panel, according to yet a further embodiment of the invention.
  • Figure 10 is an end view of panel, according to yet another embodiment of the invention.
  • Figure 11 is a graph showing the absorption coefficient of various samples at a range of frequencies.
  • each panel 1 which includes an outer portion and an inner portion.
  • the elements of each panel 1 represented in the drawings are referred to by the same reference numerals.
  • the outer portion of the panel 1 includes a membrane layer 3 and a sound absorbing layer 5 having apertures 7 therein, and the inner portion of the panel 1 includes a support layer 9 having openings 11 therein.
  • the openings 11 in conjunction with the apertures 7, define a plurality of passageways 13 which extend through the sound absorbing layer 5 and the support layer 9.
  • the openings 11 and the apertures 7 preferably overlie one another.
  • the inner portion of the panel 1 may further include a protective layer which is preferably in the form of a scrim layer 15 made of a fibrous material.
  • the support layer 9 is preferably located between the scrim layer 15 and the sound absorbing layer 5.
  • the scrim layer 15 is air permeable and functions to prevent debris from readily entering the passageways 13. In addition, the scrim layer 15 functions to protect the membrane layer 3 of adjacent panels 1 from being accidentally torn by edges of the support layer 9 when the panels 1 are stacked together during storage and transit.
  • the sound absorbing layer 5 is preferably located between the membrane layer 3 and the support layer 9.
  • the membrane layer 3 is preferably impermeable to air flow and made of paper, for example a high wet strength kraft paper, or polymer film.
  • the membrane layer 3 preferably has a thickness of no greater than 0.05 mm and a surface density of less than 180 g/m 2 .
  • the membrane layer 3 is made of a paper having a surface density between approximately 35 to 45 g/m 2 .
  • the paper may also contain a clay component.
  • the paper may be provided with a clay coating.
  • the membrane layer 3 is effectively the outer skin of the panel 1 and can be painted if desired, preferably with flexible acrylic or latex type paints.
  • the sound absorbing layer 5 can be made of foam or a compressible fibrous material, for example a non woven polyester material.
  • the sound absorbing layer 5 preferably has a thickness of approximately 4 to 15 mm and a surface density between approximately 1000 and 2000 g/m 2 .
  • the apertures 7 in the sound absorbing layer 5 can range between approximately 4 mm and 20 mm in diameter.
  • Each aperture 7 includes side walls 17 which have a width corresponding to the thickness of the sound absorbing layer 5.
  • the apertures 7 in the sound absorbing layer 5 cover approximately 10 to 50% of the surface area of the sound absorbing layer 5. In a particularly preferred embodiment, the apertures 7 in the sound absorbing layer 5 cover approximately 25% of the surface area of the sound absorbing layer 5.
  • the membrane layer 3 may be bonded to one side of the sound absorbing layer 5 by applying an adhesive.
  • a bonding layer 39 which is preferably in the form of a thin layer of thermoplastic material, for example polyethylene, may be provided on one side of the membrane layer 3.
  • the support layer 9 is the main structural layer of the panel 1.
  • the support layer 9 is preferably a sheet material that is rigid and made of metal, for example aluminium or steel.
  • the metal preferably has a thickness of between approximately 0.5 mm and 2 mm.
  • the support layer 9 provides the panel 1 with structural rigidity and preferably has one side adhesively bonded to the sound absorbing layer 5.
  • the openings 11 in the support layer 9 are preferably circular and have a diameter of between approximately 3 mm and 15 mm.
  • the openings 11 in the support layer 9, in conjunction with the apertures 7 in the sound absorbing layer 5, define a plurality of passageways 13 extending through the sound absorbing layer 5 and the support layer 9. Sound waves incident on the membrane layer 3 are able to be readily transmitted therethrough, particularly in those regions of the membrane layer 3 where the diaphragms 6 are formed. In the passageways 13 behind the diaphragms 6, sound pressure can be dissipated in the sound absorbing layer 5 by passing through the sidewalls 21.
  • the outer portion of the panel 1 includes the membrane layer 3, and the inner portion of the panel 1 includes a sound absorbing layer 5.
  • the inner portion further includes first and second support layers 9, 10 between which the sound absorbing layer 5 is located.
  • the first and second support layers 9, 10 provide the panel 1 with rigidity and are preferably made of a bonded, fibrous polyester, thick paper or cardboard, a polymer sheet or a metal foil.
  • the sound absorbing layer 5 is effectively encased by the first and second support layers 9, 10 which is particularly advantageous when the sound absorbing layer 5 is made of an open cell foam material.
  • the rigidity of the first and second support layers 9, 10 advantageously compensates for the relative pliancy of the foam material.
  • the panel 1 is able to maintain a sufficient degree of overall stiffness.
  • the support layer 10 is advantageously able to provide a smooth surface upon which the membrane layer 3 is placed.
  • the support layers 9, 10 can be bonded to opposite sides of the sound absorbing layer 5 by applying an adhesive.
  • a thin layer of thermoplastic material for example polyethylene, may be provided on the support layers 9, 10.
  • the membrane layer 3 in this embodiment is preferably made of a high wet strength paper and may be bonded to one side of the support layer 10 by applying an adhesive.
  • a bonding layer 39 which is preferably in the form of a thin layer of thermoplastic material, for example polyethylene, may be provided on one side of the membrane layer 3 and/or the support layer 10. By applying heat to the thermoplastic material the membrane layer 3 can be heat laminated to the support layer 10.
  • the embodiment of the panel 1 shown in Figure 9 is the same as that shown in Figure 8 except that the inner portion only includes a support layer 10 on one side of the sound absorbing layer 5.
  • the support layer 10 is located between the sound absorbing layer 5 and the membrane layer 3.
  • the panel 1 has an overall thickness of approximately 10mm.
  • the membrane layer 3 is preferably made of paper having a thickness which is no greater than approximately 0.05mm
  • the support layer 10 is preferably made of cardboard having a thickness of approximately 0.5mm
  • the sound absorbing layer 5 is preferably made of a compressed fibrous polyester having a thickness of approximately 9.5mm.
  • the fibrous polyester preferably has a surface density between approximately 1000 and 2000 g/m 2 .
  • the sound absorbing layer 5 provides the panel 1 with structural rigidity.
  • the rigidity of the sound absorbing layer 5 also ensures that the process of forming the apertures 7 can be performed relatively easily by punching. Further, the apertures 7 in the sound absorbing layer 5 may be formed after the support layer 10 has been adhered to the sound absorbing layer 5 such that the openings 11 and apertures 7 can be formed simultaneously in a single punching action. This assists to ensure that the openings 11 and the apertures 7 overlie one another.
  • the outer portion of the panel 1 consists of the membrane layer 3, and the inner portion of the panel 1 consists of the sound absorbing layer 5.
  • the sound absorbing layer 5 is preferably made of a fibrous material which is compressed to provide rigidity.
  • the sound absorbing layer 5 may consist of one or more layers of corrugated cardboard.
  • the overall shape of the one or more support layers 9, 10 can be varied to suit specific applications.
  • the openings 11 in the support layer 9 are separated from each other by a surrounding region which is generally planar. As a result, the entire surface of one side of the support layer 9 generally abuts with the sound absorbing layer 5, as shown in Figures 1 to 4.
  • FIG. 5 To further improve the support layers 9 rigidity and increase the depth of the passageways 13, alternative embodiments of the support layer 9, as shown in Figures 5 to 7, can be utilised.
  • like reference numerals are used in all of the embodiments to identify the same features.
  • the support layers 9 shown in the panel 1 illustrated in Figures 5 to 7 all include a plurality of indentations 19 which each include sidewalls 21 which extend around and converge towards their respective opening 11.
  • the openings 11 in the support layer 9 shown in Figure 5 are circular, however the openings 11 may be of any other desired shape, for example square, triangular, etc.
  • the support layers 9 illustrated in Figures 5 to 7 are similar to the sheet materials disclosed in Australian Provisional Patent Application No. 2007902701 , the contents of which are hereby incorporated by reference.
  • FIG. 3 and 4 of the accompanying drawings there is shown a wall structure 23.
  • the wall structure 23 includes a frame consisting of a plurality of wall studs 25.
  • the panels 1 are fastenable to the wall studs 25 in a conventional manner by using nails, screws, adhesives of the like.
  • the panels 1 depicted in the wall structure 23 shown in figures 3 and 4 are of the type shown in figures 1 and 2.
  • Panels 1 in accordance with the other embodiments can be fastened to the wall studs 25 in the same manner.
  • cavities are provided between adjoining wall studs
  • each cavity effectively becomes an enclosed air volume when the panels 1 are mounted to the walls studs 25.
  • Sound absorbing material 29 can be located in the cavities to absorb sound waves which, instead of being absorbed by the sound absorbing layer 5, pass through the panel 1.
  • an edge portion 31 of a panel 1 is shown in abutment with an edge of a conventional plasterboard panel 27.
  • the overall thickness of the panel 1 is the same as the conventional plasterboard panel 27.
  • the thickness of the panel 1 in the vicinity of the edge portion 31 is reduced 1 by the compression the sound absorbing layer 5 near the edge portion 31.
  • the thickness of the panel 1 tapers towards the edge portion 31 , as shown in Figure 4.
  • the panel 1 is thereby provided with an edge portion 31 which resembles the edge of the conventional plasterboard panel 27.
  • an infill of plaster 33 can be provided over the edge portion 31 such that the panel 1 is seamlessly incorporated into the wall structure 23 with the membrane layer 3 providing a continuous wall surface with the infill of plaster 33 and an outer face 37 of the plasterboard panel 27.
  • the continuous wall surface 35 has the same appearance of a wall structure 23 made solely of plasterboard panels 27.
  • the sound absorbing material 29 can be slightly spaced from the panels 1 such each panel 1 is able to oscillate in response to sound waves incident on the panel 1.
  • the panels 1 in combination with the enclosed air volumes behind the panels 1 act like a series of panel absorbers.
  • a panel absorber is a form of resonant oscillating mass-spring system.
  • a panel absorber typically includes a non rigid, non porous planar material which is positioned over an enclosed air space.
  • the planar material is able to resonate in response to sound waves incident on the material with dampening being provided by the enclosed air space.
  • the panels 1 can be regarded as the planar material which is able to oscillate and the enclosed air volumes between the wall studs 25 can be regarded as the air space.
  • conventional plasterboards have a relatively high mass per square meter the frequency absorbed according to the above equation will be relatively low due to the mass of conventional plasterboards. In this regard, the frequencies absorbed tend to be in the range below 500 Hz. In contrast, the relatively low mass per square meter of the panels 1 of the present invention enables the frequencies absorbed to be of a much higher.
  • the graph in Figure 11 shows the absorption coefficient of various acoustic shield samples at a range of frequencies.
  • the samples where all mounted to a frame structure having wall type timber studs and sound absorbing material located therebetween.
  • the sample panels identified in the graph as BellMax WP1 , BellMax WP2 and BellMax WP3 (“the BellMax samples") all consist of an outer portion including a membrane layer made of a clay coated paper, and a sound absorbing layer made of fibrous polyester.
  • the inner portion of these three samples all include a support layer made of an aluminium mesh.
  • the apertures in the sound absorbing layer are 15mm in diameter.
  • the apertures in the sound absorbing layer are 10mm in diameter.
  • the apertures cover approximately 25% of the surface area of the panel. In contrast, the apertures cover approximately 50% of the surface area of the panel in the BellMax WP3 sample.
  • the other samples in the graph in Figure 11 are a commercial ceiling tile, a commercial wall tile and a plasterboard panel having a thickness of 10mm.
  • the graph in Figure 11 demonstrates that the BellMax sample panels all have an absorption coefficient between approximately 0.8 and 1.0 at frequencies of approximately 250Hz to 1000Hz. In comparison, all of the other samples in the graph have a much lower absorption coefficient over this frequency range.
  • the present invention advantageously provides a panel which can be used as a substitute for conventional plasterboard panels.
  • the panels according to the present invention are lightweight and acoustically transparent, relative to conventional plasterboard panels, in that sound waves incident on the panels are able to readily penetrate the panels rather than be reflected. Accordingly, by incorporating the panels into interior walls lower reverberation times can be achieved, thereby reducing reverberated noise and subsequently improving the intelligibility of speech.
  • the membrane layer 3 of the panel 1 advantageously provides the panel 1 with an outer surface which is smooth and flat and has the same appearance as a conventional plasterboard panel when painted. Accordingly, the panel 1 of the present invention is advantageously able to be used in a wall structure to create a wall having the same aesthetic appearance as a wall lined with conventional plasterboard panels.
  • the panels are particularly well suited for use in hospitals, manufacturing facilities, offices, etc where noise from a variety of sources needs to be absorbed. For example, drilling and cutting equipment used in hospital theatres during surgical procedures can produce considerable levels of noise. By incorporating the panels into the walls of the theatre the noise generated can be absorbed into the walls rather than be reflected. Medical staff are thereby able to more easily hear one another during the surgical procedure, minimising the risk of important instructions be misheard.
  • the panels according to the present invention are advantageously able to be integrated into a wall structure in an aesthetically pleasing manner. Further, the panels can be painted and can be installed utilising the same methods and skills as conventional plasterboard panels. The panels can also be used for other applications, for example as the outer surface of a motor vehicle dashboard.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)

Abstract

La présente invention concerne un panneau acoustique (1) qui est acoustiquement transparent et/ou absorbant par rapport à un panneau de plaque de plâtre classique. Le panneau (1) est particulièrement approprié pour le revêtement d'une paroi intérieure d'un bâtiment, comme substitut à un panneau de plaque de plâtre classique. Le panneau (1) comprend une couche de membrane (3), une couche de support (9) comportant des orifices, et une couche d'absorption de son (5) comportant des ouvertures (7). Les orifices, en association avec les ouvertures (7), définissent une pluralité de passages de telle sorte que des ondes sonores incidentes sur la couche de membrane (3) passent à travers celle-ci et dans les passages et/ou la couche d'absorption de son (5).
PCT/AU2008/001185 2007-08-17 2008-08-15 Panneau acoustique WO2009023900A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2008288674A AU2008288674B2 (en) 2007-08-17 2008-08-15 An acoustic panel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2007904442 2007-08-17
AU2007904442A AU2007904442A0 (en) 2007-08-17 An Acoustically Transparent Wall Panel
AU2007906936 2007-12-18
AU2007906936A AU2007906936A0 (en) 2007-12-18 An Acoustic Panel

Publications (1)

Publication Number Publication Date
WO2009023900A1 true WO2009023900A1 (fr) 2009-02-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2008/001185 WO2009023900A1 (fr) 2007-08-17 2008-08-15 Panneau acoustique

Country Status (2)

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AU (1) AU2008288674B2 (fr)
WO (1) WO2009023900A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010148439A1 (fr) * 2009-06-22 2010-12-29 Kingspan Insulation Pty Ltd Isolation composite
WO2011047429A1 (fr) 2009-10-21 2011-04-28 Bellmax Acoustic Pty Ltd Panneau acoustique
WO2012006663A1 (fr) * 2010-07-13 2012-01-19 Bellmax Acoustic Pty Ltd Panneau acoustique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858676A (en) * 1973-01-22 1975-01-07 Masurier Philip H Le Sound absorbing panel
GB2019937A (en) * 1978-04-29 1979-11-07 Rolls Royce Sound absorbing lining
US4241806A (en) * 1978-10-10 1980-12-30 Metzger Arthur C Noise attenuation panel
US4291079A (en) * 1979-12-12 1981-09-22 Rohr Industries, Inc. Method of manufacturing a honeycomb noise attenuation structure and the structure resulting therefrom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858676A (en) * 1973-01-22 1975-01-07 Masurier Philip H Le Sound absorbing panel
GB2019937A (en) * 1978-04-29 1979-11-07 Rolls Royce Sound absorbing lining
US4241806A (en) * 1978-10-10 1980-12-30 Metzger Arthur C Noise attenuation panel
US4291079A (en) * 1979-12-12 1981-09-22 Rohr Industries, Inc. Method of manufacturing a honeycomb noise attenuation structure and the structure resulting therefrom

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010265843A1 (en) * 2009-06-22 2011-12-15 Kingspan Insulation Pty Ltd Composite insulation
AU2010265843B2 (en) * 2009-06-22 2016-06-30 Kingspan Insulation Pty Ltd Composite insulation
WO2010148439A1 (fr) * 2009-06-22 2010-12-29 Kingspan Insulation Pty Ltd Isolation composite
US8708097B2 (en) 2009-10-21 2014-04-29 Bellmax Acoustic Pty Ltd. Acoustic panel
WO2011047429A1 (fr) 2009-10-21 2011-04-28 Bellmax Acoustic Pty Ltd Panneau acoustique
AU2010310882B2 (en) * 2009-10-21 2011-11-24 Bellmax Acoustic Pty Ltd Acoustic panel
CN102639795A (zh) * 2009-10-21 2012-08-15 贝尔马克斯声学有限公司 声学面板
CN102639795B (zh) * 2009-10-21 2014-09-10 贝尔马克斯声学有限公司 声学面板、墙结构和路旁屏障
CN103069086A (zh) * 2010-07-13 2013-04-24 贝尔马克斯声学有限公司 声学板
US8770344B2 (en) 2010-07-13 2014-07-08 Bellmax Acoustic Pty Ltd. Acoustic panel
EP2593614A1 (fr) * 2010-07-13 2013-05-22 Bellmax Acoustic Pty Ltd Panneau acoustique
EP2593614A4 (fr) * 2010-07-13 2014-12-24 Bellmax Acoustic Pty Ltd Panneau acoustique
CN103069086B (zh) * 2010-07-13 2015-11-25 贝尔马克斯声学有限公司 多层声学板
WO2012006663A1 (fr) * 2010-07-13 2012-01-19 Bellmax Acoustic Pty Ltd Panneau acoustique

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