EP0745738A1 - Panneau acoustique aussi bien que procédé pour production du même - Google Patents

Panneau acoustique aussi bien que procédé pour production du même Download PDF

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Publication number
EP0745738A1
EP0745738A1 EP95890167A EP95890167A EP0745738A1 EP 0745738 A1 EP0745738 A1 EP 0745738A1 EP 95890167 A EP95890167 A EP 95890167A EP 95890167 A EP95890167 A EP 95890167A EP 0745738 A1 EP0745738 A1 EP 0745738A1
Authority
EP
European Patent Office
Prior art keywords
layer
grooves
slits
acoustic panel
cover 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.)
Granted
Application number
EP95890167A
Other languages
German (de)
English (en)
Other versions
EP0745738B1 (fr
Inventor
Michael Albert Dipl-Ing. Stache
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wiesner-Hager Baugruppe Gesmbh
Original Assignee
Wiesner-Hager Baugruppe Gesmbh
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
Application filed by Wiesner-Hager Baugruppe Gesmbh filed Critical Wiesner-Hager Baugruppe Gesmbh
Publication of EP0745738A1 publication Critical patent/EP0745738A1/fr
Application granted granted Critical
Publication of EP0745738B1 publication Critical patent/EP0745738B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E04B2001/849—Groove or slot type openings
    • 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
    • E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element

Definitions

  • the invention relates to an acoustic panel and a method for producing the same.
  • Acoustic panels made of wood-based materials usually plywood panels, with row holes at certain center distances are currently available. These holes are through holes and have the task of absorbing the sound that occurs in a reverberation room (e.g. gyms or similar), i.e. to reduce or specifically influence the reverberation time in the reverberation room by converting the sound energy into thermal energy.
  • This degree of sound absorption can be influenced in acoustic panels with through holes by attaching a sound-absorbing insulating material over the entire surface on the side facing away from the reverberation room and using a suitable substructure to create a defined distance (enclosed reverberation room volume) from the supporting wall or ceiling. With the change in the enclosed reverberation volume, the measurement curves in the third octave bands can be shifted slightly. Additional options for influencing are offered by varying the plate thickness and the proportion of holes (by changing the hole pattern and / or hole diameter).
  • laminated veneer lumber or plywood panels are currently being produced, which have a regular slit structure in the surface.
  • the panels are whole (slit-shaped opening) or partially slotted.
  • the degree of sound absorption of the partially slotted panels can be influenced by varying the slot depth, the slot spacing and the slot width. The same influencing options apply to the slotted plates as to the drilled plates.
  • MDF boards Medium Density Fibreboard
  • acoustic panel is slotted on the visible side up to the middle of the board thickness and drilled from the back in the form of row holes to the bottom of the slot.
  • the same variation options apply to this type of acoustic panel as to the exclusively drilled version.
  • the object of the invention is to provide an acoustic panel, the sound-absorbing effect of which is significantly improved over that of the known acoustic panels made of wood-based materials by utilizing basic physical or acoustic principles.
  • an acoustic panel which is characterized according to the invention in that it consists of a three-layer solid wood panel with two top layers running parallel to one another with respect to the fiber direction and a central layer running transversely to these there is that the (layer side) cover layer has longitudinally extending and reaching to the central position slits, and that the central layer on its side facing the slotted cover layer has parallel, the slots cutting grooves.
  • the invention is based on the idea of letting the sound impinging obliquely on the plate level run dead with the aid of a cavity within the plate cross section by means of multiple sound reflection between the cavity walls.
  • a plurality of such cavities is formed within the panel cross section by the grooves provided in the central position and cutting the slots in the cover layer on the reverberation chamber side.
  • the sound enters these cavities at the intersections of these slots and grooves and is reflected several times by the walls thereof. With every reflection, the sound within the cavities loses energy, as this is converted into heat due to the friction that occurs.
  • the degree of sound absorption achievable with an acoustic panel according to the invention can be influenced essentially by varying the slot and / or groove spacing, and to a lesser extent by different groove depths and slot and / or groove shapes.
  • the grooves of the central layer cut the slits of the cover layer on the reverberation chamber side at a right angle, since this facilitates the manufacture of the plate because the grooves are then to be produced in the longitudinal direction of the boards forming the central layer.
  • the slits and / or grooves can have a rectangular, rounded, triangular, chamfered, or caries-arch cross-section.
  • the other cover layer can also have slits extending in the longitudinal direction and reaching to the middle layer, which are preferably aligned with the slits of one cover layer, and the middle layer on its side facing the other cover layer parallel and coinciding with the slits of the other cover layer Have grooves, the sum of the depths of the grooves on both sides of the middle layer being greater than the thickness of the middle layer.
  • This design creates openings at the interfaces of the grooves, through which the sound can also pass through the panel, as is the case with the known slotted or drilled acoustic panels, so that there is a further possibility of influencing the degree of sound absorption.
  • the process is first planed or milled in boards intended for the central position on one side in parallel grooves which preferably run in the longitudinal direction of the boards, then the boards provided with the grooves with the boards forming the two top layers in the press be glued to a blank plate, then the blank plate is cut into panels of the size intended for the finished acoustic panel, and finally with the help of planing or milling tools in the one adjacent to the grooves of the central layer (on the hall side) of such a cover layer Plate slits running in the longitudinal direction and reaching to the central position are produced, whereby in the other cover layer, too, longitudinal slits are produced, preferably aligned with the slits of the one cover layer, which extend into the central position and thus simultaneously in the central position with the Slots of this other top layer form coincident grooves.
  • FIG. 1 shows an oblique view of a first embodiment of the acoustic panel according to the invention
  • FIG. 2 shows the acoustic panel according to FIG. 1 in plan view
  • FIG. 3 shows an oblique view of a second embodiment of the acoustic panel according to the invention
  • FIG. 4 shows the acoustic panel according to FIG. 3 in top view.
  • 1 and 2 consists of a three-layer solid wood panel with two cover layers 1, 2 running parallel to each other with respect to the fiber direction, of which the cover layer 1 represents the cover layer on the reverberation chamber side, and a central layer 3 running transversely to these cover layers.
  • the basic structure of this three-layer solid wood panel corresponds to the guidelines of the ⁇ -Norm B3022.
  • the cover layer 1 on the reverberation chamber side has slits 1 a extending in the longitudinal direction and extending to the central position 3.
  • parallel grooves 3a are provided which cut the slits 1a at an angle of 90 ° and which form cavities within the plate cross section which undercut the slits 1a. From the walls of these cavities, the sound entering the acoustic panel at the intersections of the slots 1a and grooves 3a is reflected several times, so that its energy is converted into heat by the resulting friction.
  • FIGS. 3 and 4 represents a further development of the invention, as the top layer 2 has longitudinally extending and up to the middle layer 3 slits 2a, which are aligned with the slits 1a, and the middle layer 3 on their Cover layer 2 facing side has further grooves 3b, which coincide with the slots 2a of the cover layer 2.
  • the depths of the grooves 3a and 3b are dimensioned such that their sum exceeds the thickness of the central layer 3, so that openings 4 (shown hatched in FIG.
  • the grooves 3a of the central layer 3 it is not absolutely necessary for the grooves 3a of the central layer 3 to cut the slots 1a of the cover layer 1 at a right angle, although this is currently the preferred embodiment.
  • An inclination of the grooves 3a with respect to the slots 1a could e.g. serve to produce decorative patterns in a wall or ceiling to be clad with acoustic panels according to the invention.
  • the slits 1a are as over the entire acoustic panel shown throughout. However, it would also be possible to interrupt these slits at locations where there are no grooves 3a or to let them end before the edge of the plate. A decorative effect could also be achieved with this.
  • these cross sections can also have any other suitable shape instead of the rectangular shape shown.
  • rounded, triangular, chamfered or caries-like cross-sections also lend themselves here.
  • the sound absorption effect of the acoustic panel can be influenced to a certain extent via the cross-sectional shape of the slots 1a and grooves 3a.
  • various decorative effects can be achieved through the various cross-sectional shapes.
  • the procedure for producing the acoustic panel according to the invention is as follows.
  • the grooves 3a are planed or milled on one side into the boards intended for the formation of the middle layer 3.
  • the middle-layer boards prepared in this way are integrated into the normal production process for three-layer solid wood panels and glued to a board blank in the press with the boards forming the two top layers 1 and 2.
  • the cover layer 1 After the press has been emptied, the grooves 3a of the middle layer are covered by the cover layer 1.
  • the blank disc is then formatted, i.e. cut into individual panels of the size intended for the acoustic panels.
  • the top layer 1 of such a board is slit in the run up to the middle layer 3 with the help of planing or milling tools (slits 1a), whereby an acoustic board according to FIG. 1 is completed.
  • the top layer 2 In the case of the acoustic panel according to FIG. 2, the top layer 2, u. between. In the middle layer 3, slotted, whereby at the same time the slots 2a of the top layer 2 and the coincident with these slots 3b grooves of the middle layer 3 are formed.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Panels For Use In Building Construction (AREA)
EP95890167A 1995-06-02 1995-09-21 Panneau acoustique aussi bien que procédé pour production du même Expired - Lifetime EP0745738B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT945/95 1995-06-02
AT0094595A AT405069B (de) 1995-06-02 1995-06-02 Akustikplatte sowie verfahren zur herstellung derselben

Publications (2)

Publication Number Publication Date
EP0745738A1 true EP0745738A1 (fr) 1996-12-04
EP0745738B1 EP0745738B1 (fr) 1999-04-14

Family

ID=3503456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890167A Expired - Lifetime EP0745738B1 (fr) 1995-06-02 1995-09-21 Panneau acoustique aussi bien que procédé pour production du même

Country Status (3)

Country Link
EP (1) EP0745738B1 (fr)
AT (2) AT405069B (fr)
DE (1) DE59505656D1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992636A3 (fr) * 1998-10-06 2001-06-06 Lignoform Benken AG Panneau isolant acoustique pour l'aménagement intérieur
EP1109150A3 (fr) * 1999-12-17 2001-09-05 ISOLITH Leichtbauplattenwerk M. Hattinger Gesellschaft mbH Panneau acoustique
WO2002043047A1 (fr) * 2000-11-21 2002-05-30 Thomas Wiegel Materiau stratifie
EP1357237A3 (fr) * 2002-04-22 2004-01-28 Pream S.R.L. Panneau absorbant le bruit et méthode de fabrication correspondante
DE10248072A1 (de) * 2002-10-15 2004-05-13 Waldemar Staudigel Schallabsorberplatte
EP1380699A3 (fr) * 2002-07-10 2004-11-17 Tavapan SA Panneau absorbant le son
EP1612343A2 (fr) * 2004-07-01 2006-01-04 Lignotrend AG Panneau en bois
ES2304085A1 (es) * 2006-05-04 2008-09-01 Grupo Sansano Valero, S.L. Procedimiento de obtencion de un recubrimiento de madera en paneles acusticos, y panel obtenido con dicho recubrimiento.
EP2039841A1 (fr) 2007-09-20 2009-03-25 VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG Armoire ou étagère
ITMI20120343A1 (it) * 2012-03-06 2013-09-07 Radaelli Angelo S A S Di Renata Va Gni Radaelli & Struttura di pannello fonoassorbente.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285130B (de) * 1966-11-28 1970-10-12 Francais Isolants Platte zur Schallabsorption und Schwingungsisolation
EP0150500A2 (fr) * 1984-01-17 1985-08-07 Karl Danzer KG Panneau acoustique à copeaux de bois agglomérés avec des évidements tubulaires
EP0361025A1 (fr) * 1988-09-16 1990-04-04 AG Hunziker & Cie. Dispositif anti-bruit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285130B (de) * 1966-11-28 1970-10-12 Francais Isolants Platte zur Schallabsorption und Schwingungsisolation
EP0150500A2 (fr) * 1984-01-17 1985-08-07 Karl Danzer KG Panneau acoustique à copeaux de bois agglomérés avec des évidements tubulaires
EP0361025A1 (fr) * 1988-09-16 1990-04-04 AG Hunziker & Cie. Dispositif anti-bruit

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992636A3 (fr) * 1998-10-06 2001-06-06 Lignoform Benken AG Panneau isolant acoustique pour l'aménagement intérieur
EP1109150A3 (fr) * 1999-12-17 2001-09-05 ISOLITH Leichtbauplattenwerk M. Hattinger Gesellschaft mbH Panneau acoustique
WO2002043047A1 (fr) * 2000-11-21 2002-05-30 Thomas Wiegel Materiau stratifie
EP1357237A3 (fr) * 2002-04-22 2004-01-28 Pream S.R.L. Panneau absorbant le bruit et méthode de fabrication correspondante
EP1380699A3 (fr) * 2002-07-10 2004-11-17 Tavapan SA Panneau absorbant le son
DE10248072B4 (de) * 2002-10-15 2006-08-24 Waldemar Staudigel Schallabsorberplatte
DE10248072A1 (de) * 2002-10-15 2004-05-13 Waldemar Staudigel Schallabsorberplatte
EP1612343A2 (fr) * 2004-07-01 2006-01-04 Lignotrend AG Panneau en bois
EP1612343A3 (fr) * 2004-07-01 2007-03-07 Lignotrend AG Panneau en bois
ES2304085A1 (es) * 2006-05-04 2008-09-01 Grupo Sansano Valero, S.L. Procedimiento de obtencion de un recubrimiento de madera en paneles acusticos, y panel obtenido con dicho recubrimiento.
EP2039841A1 (fr) 2007-09-20 2009-03-25 VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG Armoire ou étagère
DE102007044875A1 (de) 2007-09-20 2009-04-02 VS Vereinigte Spezialmöbelfabriken GmbH & Co. KG Plattenförmiges Bauteil
ITMI20120343A1 (it) * 2012-03-06 2013-09-07 Radaelli Angelo S A S Di Renata Va Gni Radaelli & Struttura di pannello fonoassorbente.

Also Published As

Publication number Publication date
DE59505656D1 (de) 1999-05-20
ATA94595A (de) 1998-09-15
ATE178964T1 (de) 1999-04-15
AT405069B (de) 1999-05-25
EP0745738B1 (fr) 1999-04-14

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