EP0849411A1 - Schallschluckende Bauplatte - Google Patents
Schallschluckende Bauplatte Download PDFInfo
- Publication number
- EP0849411A1 EP0849411A1 EP97119592A EP97119592A EP0849411A1 EP 0849411 A1 EP0849411 A1 EP 0849411A1 EP 97119592 A EP97119592 A EP 97119592A EP 97119592 A EP97119592 A EP 97119592A EP 0849411 A1 EP0849411 A1 EP 0849411A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grains
- building board
- support plate
- board according
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 5
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 23
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 239000004922 lacquer Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005373 porous glass Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
- E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
-
- 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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
-
- 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 invention relates to a sound-absorbing building board For covering interior walls and ceilings, in particular Ceiling slab consisting of one at a distance from a wall to be arranged support plate, advantageous made of perforated sheet metal and at least one Sound-absorbing side of the support plate Layer, the sound-absorbing layer from a at least the visible side of the building board, with the support plate firmly connected microporous layer consists.
- Such a sound absorbing building board is for example known from EP-B-0 023 618.
- the sound absorbing Building board consists of a support plate perforated sheet metal, being on one side of the support plate a sound absorbing layer is applied.
- This sound absorbing layer is microporous, being on the outside of this microporous Layer a layer of lacquer is applied.
- the sound absorbing Layer consists of either a microporous layer Foil or from organic or inorganic Fibers joined together with a binder are connected.
- Such a building board has the advantage that with very good sound damping properties a deposit of this building board with additional Insulation material is dispensable.
- This well-known building board however, is relatively expensive to manufacture, especially in the setting of the required microporosity.
- the invention has for its object a building board of the type mentioned in such a way that this with good sound absorption properties on one Deposit of the support plate with absorption materials can be dispensed with and that these are inexpensive the manufacture is.
- a sound absorbing designed according to the invention Building board thus consists of a perforated support plate, the hole diameter can be varied to a greater extent is, but it has been found that a Hole diameter of 1.5 mm is advantageous.
- This Support plate which advantageously consists of sheet metal and can be kept relatively thin, grains are applied, which are essentially round. These grains should have a diameter that has 0.1 to 0.9 times the hole diameter, where these grains are surrounded on all sides by an adhesive layer are. For an even surface layer and that Setting the required microporosity has it turned out to be advantageous if the grain size diameter deviate from an average value by only ⁇ 25%.
- the grains are essentially round because of the all-round adhesive layer approximately punctiform with each other, so that a porous Layer is obtained.
- the microporosity of this Layer that is advantageously between 10 and 1,000 Rayl should lie in a simple way due to the grain size gradation and the ratio of smaller to larger grains can be set.
- Water glass is advantageously used as the adhesive, wherein however, any other glue, as well as organic Glue can be used.
- the type of glue depends on the fact that this is simple Way can be applied to the grain surface and on the other hand which fire protection regulations are required.
- the sound absorption plate according to the invention consists of a support plate 1 on which grains 2 are applied, the grains being of a substantially spherical shape exhibit. Grains are different here Size used, which are selected such that maintain a porosity within the sound absorption layer remains, the size of the porosity by the Selection of the fill is obtained.
- the diameter of the grains are smaller than the openings 3 in the support plate 1.
- the adhesive layer that on the grains is small compared to that Diameter of the grains, being through this adhesive layer obtain a punctiform gluing of the grains together becomes.
- the porosity of the sound-absorbing On the one hand, the choice of fill and layer can be used the size of the grains can be reached and secondly by the thickness of the applied layer. Hereby it is possible to have the sound absorption panels with any desired Adjust flow resistance, this advantageously between 10 and 1,000 Rayl should.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- Fig. 1
- einen Schnitt durch eine erfindungsgemäß ausgebildete Tragplatte mit einer mikroporösen Schicht gemäß der Erfindung und
- Fig. 2
- einen vergrößerten Ausschnitt der Fig. 1.
Claims (10)
- Schallschluckende Bauplatte zur Verkleidung von Innenraumwänden und -decken, insbesondere Deckenplatte, bestehend aus einer im Abstand von einer Wand anzuordnenden Tragplatte, vorteilhaft aus gelochtem Metallblech und einer zumindest die eine Seite der Tragplatte bedeckenden schallschluckenden Schicht, wobei die schallschluckende Schicht aus einer zumindest die Sichtseite der Bauplatte bildenden, mit der Tragplatte fest verbundenen mikroporösen Schicht besteht, dadurch gekennzeichnet, daß die schallschluckende Schicht aus Körnern aufgebaut ist, die allseitig von einer Klebeschicht umgeben sind, daß die Körner im wesentlichen kugelförmig ausgebildet sind und im wesentlichen punktförmig miteinander und mit der Tragplatte verklebt sind und daß der Durchmesser der Körner zwischen dem 0,1 bis 0,9-fachen des Lochdurchmessers in der Tragplatte liegt.
- Bauplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Körner einen Durchmesser von 0,5 bis 1 mm bei einem Lochdurchmesser in der Tragplatte von 1,5 mm aufweisen.
- Bauplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Durchmesser der Körner in der Schicht um maximal ± 25 % voneinander abweichen.
- Bauplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Klebeschicht aus Wasserglas besteht.
- Bauplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Klebeschicht aus pulverförmigem Wasserglas besteht, das nach dem Aufbringen der Schallschluckschicht mit Wasser aktivierbar ist.
- Bauplatte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Dicke der Klebeschicht klein gegenüber dem Durchmesser der Körner ist.
- Bauplatte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die gelochte Tragplatte vor dem Aufbringen der Körner mit einer Klebeschicht versehen ist.
- Bauplatte nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Körner aus Glaskugeln bestehen.
- Bauplatte nach Anspruch 8, dadurch gekennzeichnet, daß die Glaskugeln porös sind.
- Bauplatte nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die schallschluckende Schicht mit einer porösen Lackschicht bedeckt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19653930A DE19653930A1 (de) | 1996-12-21 | 1996-12-21 | Schallschluckende Bauplatte |
DE19653930 | 1996-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0849411A1 true EP0849411A1 (de) | 1998-06-24 |
EP0849411B1 EP0849411B1 (de) | 2001-06-27 |
Family
ID=7815950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119592A Expired - Lifetime EP0849411B1 (de) | 1996-12-21 | 1997-11-08 | Schallschluckende Bauplatte |
Country Status (4)
Country | Link |
---|---|
US (1) | US5910082A (de) |
EP (1) | EP0849411B1 (de) |
AT (1) | ATE202608T1 (de) |
DE (2) | DE19653930A1 (de) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19600586A1 (de) * | 1996-01-10 | 1997-07-17 | Wilhelmi Werke Ag | Verfahren zur Herstellung einer Akustikplatte und Akustikplatte in Sandwichbauweise |
US7032356B2 (en) * | 2003-08-19 | 2006-04-25 | Layfield Derek J | Interior wall and partition construction |
US7181891B2 (en) * | 2003-09-08 | 2007-02-27 | Quiet Solution, Inc. | Acoustical sound proofing material and methods for manufacturing same |
US20050211500A1 (en) * | 2004-03-26 | 2005-09-29 | Wendt Alan C | Fibrous faced ceiling panel |
US8495851B2 (en) * | 2004-09-10 | 2013-07-30 | Serious Energy, Inc. | Acoustical sound proofing material and methods for manufacturing same |
US7921965B1 (en) | 2004-10-27 | 2011-04-12 | Serious Materials, Inc. | Soundproof assembly and methods for manufacturing same |
US7798287B1 (en) | 2005-01-20 | 2010-09-21 | Serious Materials, Inc. | Acoustical ceiling panels |
US7837008B1 (en) * | 2005-09-27 | 2010-11-23 | The United States Of America As Represented By The Secretary Of The Air Force | Passive acoustic barrier |
US8029881B2 (en) * | 2005-11-04 | 2011-10-04 | Serious Energy, Inc. | Radio frequency wave reducing material and methods for manufacturing same |
US20080171179A1 (en) * | 2007-01-11 | 2008-07-17 | Quiet Solution, Llc | Low embodied energy wallboards and methods of making same |
US8445101B2 (en) | 2007-03-21 | 2013-05-21 | Ashtech Industries, Llc | Sound attenuation building material and system |
US20090239429A1 (en) | 2007-03-21 | 2009-09-24 | Kipp Michael D | Sound Attenuation Building Material And System |
CN103898996A (zh) * | 2007-03-21 | 2014-07-02 | 阿什工业技术有限责任公司 | 结合微粒基质的实用材料 |
US7987645B2 (en) * | 2007-03-29 | 2011-08-02 | Serious Materials, Inc. | Noise isolating underlayment |
US9388568B2 (en) | 2007-04-06 | 2016-07-12 | Pacific Coast Building Products, Inc. | Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same |
US7883763B2 (en) | 2007-04-12 | 2011-02-08 | Serious Materials, Inc. | Acoustical sound proofing material with controlled water-vapor permeability and methods for manufacturing same |
US8424251B2 (en) * | 2007-04-12 | 2013-04-23 | Serious Energy, Inc. | Sound Proofing material with improved damping and structural integrity |
US8397864B2 (en) * | 2007-04-24 | 2013-03-19 | Serious Energy, Inc. | Acoustical sound proofing material with improved fire resistance and methods for manufacturing same |
US8181738B2 (en) * | 2007-04-24 | 2012-05-22 | Serious Energy, Inc. | Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same |
US10174499B1 (en) | 2007-05-01 | 2019-01-08 | Pacific Coast Building Products, Inc. | Acoustical sound proofing material for architectural retrofit applications and methods for manufacturing same |
US20080286609A1 (en) * | 2007-05-15 | 2008-11-20 | Surace Kevin J | Low embodied energy wallboards and methods of making same |
US20100101457A1 (en) * | 2007-05-25 | 2010-04-29 | Surace Kevin J | Low embodied energy sheathing panels and methods of making same |
US20090000245A1 (en) * | 2007-06-28 | 2009-01-01 | Tinianov Brandon D | Methods of manufacturing acoustical sound proofing material |
US9387649B2 (en) * | 2007-06-28 | 2016-07-12 | Pacific Coast Building Products, Inc. | Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics |
US7908818B2 (en) * | 2008-05-08 | 2011-03-22 | Serious Materials, Inc. | Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics |
US7799410B2 (en) * | 2007-06-30 | 2010-09-21 | Serious Materials, Inc. | Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same |
US7914914B2 (en) * | 2007-06-30 | 2011-03-29 | Serious Materials, Inc. | Low embodied energy sheathing panels with optimal water vapor permeance and methods of making same |
US8337993B2 (en) * | 2007-11-16 | 2012-12-25 | Serious Energy, Inc. | Low embodied energy wallboards and methods of making same |
DE102007060525A1 (de) * | 2007-12-13 | 2009-06-18 | Aksys Gmbh | Schalldämpfungs-Luftführungskanal und Verfahren zur Herstellung eines Schalldämpfungs-Luftführungskanals |
US8591677B2 (en) | 2008-11-04 | 2013-11-26 | Ashtech Industries, Llc | Utility materials incorporating a microparticle matrix formed with a setting agent |
US8118928B1 (en) | 2010-12-22 | 2012-02-21 | Usg Interiors, Llc | Cast ceiling tile |
US8383233B2 (en) | 2010-12-22 | 2013-02-26 | Usg Interiors, Llc | Ceiling tile base mat |
CA2839425C (en) | 2011-06-17 | 2019-10-15 | Basf Se | Prefabricated wall assembly having an outer foam layer |
US20140115988A1 (en) * | 2011-06-17 | 2014-05-01 | Basf Se | Prefabricated Wall Assembly Having An Insulating Foam Layer |
CA2839587C (en) | 2011-06-17 | 2021-08-24 | Basf Se | High performance wall assembly |
US20130052429A1 (en) * | 2011-08-22 | 2013-02-28 | Sabic Innovative Plastics Ip B.V. | Multiwall sheet and methods for making and using the same |
DE102014202477A1 (de) * | 2014-02-11 | 2015-08-13 | Leena Rose Wilson | Akustischer Absorber und Verwendung eines derartigen akustischen Absorbers |
US11541625B2 (en) | 2015-01-19 | 2023-01-03 | Basf Se | Wall assembly |
US10801197B2 (en) | 2015-01-19 | 2020-10-13 | Basf Se | Wall assembly having a spacer |
CA2988547C (en) | 2016-12-15 | 2021-01-26 | Certainteed Gypsum, Inc. | Plaster boards and methods for making them |
CA3182566A1 (en) | 2017-09-26 | 2019-04-04 | Certainteed Gypsum, Inc. | Plaster boards having internal layers and methods for making them |
US11203864B2 (en) | 2017-09-28 | 2021-12-21 | Certainteed Gypsum, Inc. | Plaster boards and methods for making them |
ES2946143T3 (es) | 2017-09-30 | 2023-07-13 | Certainteed Gypsum Inc | Placas de yeso de sección ahusada y métodos de fabricación de las mismas |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1053173B (de) * | 1954-04-09 | 1959-03-19 | Holzwerke H Wilhelmi O H G | Poroeses Schallschluckblatt und Verfahren zu seiner Herstellung |
DE3025136A1 (de) * | 1979-07-05 | 1981-01-29 | Camalco Sa | Verkleidung fuer mauerwerke von gebaeuden o.dgl., verfahren zum schraegschneiden wenigstens eines der laengsraender dieser verkleidung sowie schneidanlage zur durchfuehrung des verfahrens |
EP0023618A1 (de) * | 1979-07-25 | 1981-02-11 | Wilhelmi Werke GmbH & Co.KG | Schallschluckende Bauplatte und Verfahren zu ihrer Herstellung |
EP0085863A1 (de) * | 1982-02-05 | 1983-08-17 | Wilhelmi Werke GmbH & Co.KG | Schallschluckende Bauplatte |
EP0399514A1 (de) * | 1989-05-23 | 1990-11-28 | Sto Poraver Gmbh | Schallabsorptionsplatte |
WO1994024381A1 (fr) * | 1993-04-14 | 1994-10-27 | Pic Conseil S.A.R.L. | Materiau absorbant acoustique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2028272A (en) * | 1930-12-19 | 1936-01-21 | Burgess Lab Inc C F | Sound absorbing construction |
US2923372A (en) * | 1952-04-22 | 1960-02-02 | Maccaferri Mario | Acoustic tile |
US4235303A (en) * | 1978-11-20 | 1980-11-25 | The Boeing Company | Combination bulk absorber-honeycomb acoustic panels |
US4960184A (en) * | 1989-11-09 | 1990-10-02 | Bruce Woodward | Sound absorbing structure |
US5678363A (en) * | 1993-12-21 | 1997-10-21 | Ogorchock; Paul | Sound barrier panel |
-
1996
- 1996-12-21 DE DE19653930A patent/DE19653930A1/de not_active Withdrawn
-
1997
- 1997-11-08 DE DE59703904T patent/DE59703904D1/de not_active Expired - Fee Related
- 1997-11-08 EP EP97119592A patent/EP0849411B1/de not_active Expired - Lifetime
- 1997-11-08 AT AT97119592T patent/ATE202608T1/de not_active IP Right Cessation
- 1997-12-19 US US08/994,291 patent/US5910082A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1053173B (de) * | 1954-04-09 | 1959-03-19 | Holzwerke H Wilhelmi O H G | Poroeses Schallschluckblatt und Verfahren zu seiner Herstellung |
DE3025136A1 (de) * | 1979-07-05 | 1981-01-29 | Camalco Sa | Verkleidung fuer mauerwerke von gebaeuden o.dgl., verfahren zum schraegschneiden wenigstens eines der laengsraender dieser verkleidung sowie schneidanlage zur durchfuehrung des verfahrens |
EP0023618A1 (de) * | 1979-07-25 | 1981-02-11 | Wilhelmi Werke GmbH & Co.KG | Schallschluckende Bauplatte und Verfahren zu ihrer Herstellung |
EP0085863A1 (de) * | 1982-02-05 | 1983-08-17 | Wilhelmi Werke GmbH & Co.KG | Schallschluckende Bauplatte |
EP0399514A1 (de) * | 1989-05-23 | 1990-11-28 | Sto Poraver Gmbh | Schallabsorptionsplatte |
WO1994024381A1 (fr) * | 1993-04-14 | 1994-10-27 | Pic Conseil S.A.R.L. | Materiau absorbant acoustique |
Also Published As
Publication number | Publication date |
---|---|
DE19653930A1 (de) | 1998-06-25 |
US5910082A (en) | 1999-06-08 |
DE59703904D1 (de) | 2001-08-02 |
EP0849411B1 (de) | 2001-06-27 |
ATE202608T1 (de) | 2001-07-15 |
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