EP0013513B1 - Sound absorbing structure - Google Patents
Sound absorbing structure Download PDFInfo
- Publication number
- EP0013513B1 EP0013513B1 EP79303073A EP79303073A EP0013513B1 EP 0013513 B1 EP0013513 B1 EP 0013513B1 EP 79303073 A EP79303073 A EP 79303073A EP 79303073 A EP79303073 A EP 79303073A EP 0013513 B1 EP0013513 B1 EP 0013513B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foil
- sheet material
- sound absorbing
- sheet
- absorbing structure
- 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
Links
- 239000011888 foil Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000001603 reducing effect Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000011490 mineral wool Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003466 welding Methods 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
- E04B1/8409—Sound-absorbing elements sheet-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
Definitions
- the stated purpose is to prevent an air flow along the upper side of the sheet material and thereby also to counteract an air circulation through this perforated sheet material, without substantially reducing the sound absorbing effect, especially in the high frequency range, as would be the case when a tight foil were glued flat to the perforated sheet material.
- the known ceiling lining when applied in practice, has proved not to come up, in all cases, to expectations with regard to the sound absorbing effect.
- the plastic foil has turned out to have a reducing effect on the sound absorbing capacity of the mineral wool, to such extent, in some cases, that the mineral wool becomes almost ineffective, irrespective of its thickness.
- this reducing effect varies substantially dependent on the physical characteristics of the plastic foil, especially its composition, its melting point, and its thickness and variations in thickness, and it has been found that these factors can vary in one and the same roll of plastic foil to such an extent as to strongly influence the said reducing effect.
- the glue stripes constitute a further important factor, as it can be difficult to control their thickness and width with sufficient accuracy, and because they must be expected, by providing a direct contact between the foil and the sheet material, to reduce the effective absorption area proportionally to the area of the glue stripes.
- the present invention has for its object to provide a sound absorbing structure consisting also of perforated sheet and foil but having a sound absorbing capacity which even under practical conditions can be controlled adequately.
- a sound absorbing structure is known from US-A-3 827 999 which comprises a perforated face plate of sheet metal, a backing sheet covering the perforated face plate and spacing means provided between the opposed surfaces of the face plate and the backing sheet and forming a firm bond therebetween.
- This liner is of circular configuration so that it may be positioned about the periphery of a bladed rotor generating an airflow and acoustic field from the tips of the blades, and the spacing means of this known liner are formed by a honeycomb or another layer of partitioned cellular material, sandwiched in between the face plate and the backing sheet.
- a particular feature of the liner is that the axes of the cavities, bounded by the perforated face plate, the backing sheet or plate, and the partitions of the intermediate layer, are slanted relative to the local tangential direction of the liner.
- the sound absorbing structure of the present invention comprises only a thin perforated sheet material, such as aluminium or steel sheet, a plastics foil secured to one side of the sheet having a thickness of 10-50 ⁇ m, and spacing means secured between the sheet material and the foil and dividing the space between the sheet material and the foil into a great plurality of cellular cavities, the spacing between the sheet material and the foil being chosen so as to give the optimum sound absorption of the sound to be absorbed.
- the sound absorbing effect is due to the fact that the foil is divided into a great number of small areas or small diaphragms, which vibrate or oscillate independently and out of time with the vibrations of the perforated sheet material.
- the said diaphragms or cells are given a regular shape, for example a quadratic or hexagonal shape, but this is of minor importance, since a gauze-like material, such as glass fiber gauze, has also proved suitable instead of a netting provided with regular meshes.
- An important advantage of the sound absorbing structure according to the invention is that unintended minor variations originating from slightly varying conditions during the production of the foil, especially unintended variations in its thickness and composition, have practically no importance for the sound absorbing capacity of the finished structure.
- Said capacity may, on the other hand, be varied within a rather wide range, if so desired, in particular according to the prevailing frequency range, by changing the thickness and perforation ratio of the sheet material, the thickness of the foil and the netting, and the size and shape of the net meshes.
- the desired distance between the sheet material and the foil can also be secured in another way than by sandwiching of netting or the like between the parts in question, e.g. the netting may form part of the foil, or said foil and/or the sheet material may be provided with low ribs or protuberances to secure the required spacing.
- the structure comprises a rectangular sheet 1 of steel or aluminium which is perforated between the parallel lines 2, 2 so that a pair of opposite marginal portions 3, 3 are left without perforations.
- the netting 5 is adhesively attached to both the plastic foil 4 and the metal sheet 1 and forms a layer of air-filled cells therebetween which are closed by the plastic foil or film but communicate with the surrounding air through the perforations of the metal sheet 1.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- External Artificial Organs (AREA)
- Golf Clubs (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Waveguide Aerials (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT79303073T ATE9017T1 (de) | 1979-01-04 | 1979-12-28 | Schalldaemmende struktur. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK43/79 | 1979-01-04 | ||
DK4379A DK4379A (da) | 1979-01-04 | 1979-01-04 | Lydabsorberingsaggregat |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0013513A1 EP0013513A1 (en) | 1980-07-23 |
EP0013513B1 true EP0013513B1 (en) | 1984-08-15 |
Family
ID=8089085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79303073A Expired EP0013513B1 (en) | 1979-01-04 | 1979-12-28 | Sound absorbing structure |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0013513B1 (no) |
JP (1) | JPS5592446A (no) |
AT (1) | ATE9017T1 (no) |
AU (1) | AU533557B2 (no) |
DE (1) | DE2967185D1 (no) |
DK (1) | DK4379A (no) |
EG (1) | EG14896A (no) |
ES (1) | ES256657Y (no) |
FI (1) | FI800007A (no) |
MX (1) | MX149377A (no) |
NO (1) | NO794220L (no) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3242940A1 (de) * | 1982-11-20 | 1984-05-24 | Hans Julius 6303 Hungen Schmitt | Akustisch wirksames bauelement |
DE4007556C2 (de) * | 1990-03-09 | 1998-05-07 | Gruenzweig & Hartmann Montage | Resonatorkulisse für Kulissenschalldämpfer |
JP2522604B2 (ja) * | 1990-04-26 | 1996-08-07 | 株式会社ユニックス | 吸音材およびその製造方法 |
CA2091288C (en) * | 1992-03-13 | 1995-11-28 | Toru Morimoto | Membranous-vibration sound absorbing materials |
IT231856Y1 (it) * | 1993-03-05 | 1999-08-06 | Eurofibre Spa | Pannello termoisolante e fonoassorbente |
AU3300900A (en) | 2000-03-20 | 2001-10-03 | Newmat, S.A. | Flexible sheet fabrics for tensile structures, method for making same, tensile false ceilings comprising same |
DE10337878B4 (de) | 2003-08-18 | 2008-02-21 | Silu Verwaltung Ag | Montageband mit abschnittsweiser Abdeckfolie |
FR2926099B1 (fr) | 2008-01-09 | 2010-03-19 | Normalu | Nappe pour parois tendues accoustiques etanches et partiellement translucides |
FR2970009B1 (fr) * | 2010-12-30 | 2021-06-11 | Normalu | Ensemble acoustiquement absorbant |
KR102445140B1 (ko) * | 2017-05-08 | 2022-09-21 | 크바드라트 소프트 셀스 에이/에스 | 방의 천장 또는 벽에 장착되도록 구성된 건축 패널 및 이러한 건축 패널을 제조하는 방법 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2192653A (en) * | 1937-11-13 | 1940-03-05 | Schenk Eduard | Acoustic construction |
US2966954A (en) * | 1957-07-11 | 1961-01-03 | Celotex Corp | Acoustical correction element |
US3948347A (en) * | 1974-11-25 | 1976-04-06 | Gallagher-Kaiser Corporation | Acoustical panel |
JPS5719759Y2 (no) * | 1976-01-28 | 1982-04-26 |
-
1979
- 1979-01-04 DK DK4379A patent/DK4379A/da unknown
- 1979-12-20 NO NO794220A patent/NO794220L/no unknown
- 1979-12-28 AT AT79303073T patent/ATE9017T1/de not_active IP Right Cessation
- 1979-12-28 ES ES1979256657U patent/ES256657Y/es not_active Expired
- 1979-12-28 EP EP79303073A patent/EP0013513B1/en not_active Expired
- 1979-12-28 DE DE7979303073T patent/DE2967185D1/de not_active Expired
-
1980
- 1980-01-02 AU AU54268/80A patent/AU533557B2/en not_active Ceased
- 1980-01-02 FI FI800007A patent/FI800007A/fi not_active Application Discontinuation
- 1980-01-03 MX MX180672A patent/MX149377A/es unknown
- 1980-01-04 JP JP26480A patent/JPS5592446A/ja active Granted
- 1980-01-05 EG EG08/80A patent/EG14896A/xx active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
Also Published As
Publication number | Publication date |
---|---|
JPS6310258B2 (no) | 1988-03-04 |
ES256657Y (es) | 1981-12-16 |
FI800007A (fi) | 1980-07-05 |
AU533557B2 (en) | 1983-12-01 |
AU5426880A (en) | 1980-07-10 |
MX149377A (es) | 1983-10-28 |
DE2967185D1 (en) | 1984-09-20 |
ES256657U (es) | 1981-07-01 |
EP0013513A1 (en) | 1980-07-23 |
ATE9017T1 (de) | 1984-09-15 |
EG14896A (en) | 1986-12-30 |
DK4379A (da) | 1980-07-05 |
NO794220L (no) | 1980-07-07 |
JPS5592446A (en) | 1980-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19810120 |
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ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
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