NO794220L - COMPOSITION SOUND-ABSORBING MATERIALS. - Google Patents
COMPOSITION SOUND-ABSORBING MATERIALS.Info
- Publication number
- NO794220L NO794220L NO794220A NO794220A NO794220L NO 794220 L NO794220 L NO 794220L NO 794220 A NO794220 A NO 794220A NO 794220 A NO794220 A NO 794220A NO 794220 L NO794220 L NO 794220L
- Authority
- NO
- Norway
- Prior art keywords
- foil
- sheet material
- sound absorption
- thickness
- sound
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title description 3
- 239000011358 absorbing material Substances 0.000 title 1
- 239000011888 foil Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 239000004411 aluminium Substances 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
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 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
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
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
Abstract
Description
Lydabsorberingsaggregat.Sound absorption unit.
Fra beskrivelsen til dansk patent 128 947 kendes en lydabsorberende loftbeklædning bestående af elementer af tyndt, perforeret plademateriale og i disse elementer ån-bragt absorptionsmateriale, såsom mineraluldflager, samt en mellem pladematerialet og absorptionsmaterialet indskudt, luft- og partikelstandsende folie, der er fastlimet til pladematerialet i et krydsmønster bestående af. to hinanden kryd-sende sæt af kontinuerlige limstriber. Det er angivet, at folien fortrinsvis er en plastfolie med en tykkelse på omkring 10yu eller mindre, og at den danner en art vaffellig-nende belægning på pladematerialets overside, idet limstriberne opdeler folien i et stort antal sædvanligvis rektangu-lære, eventuelt kvadratiske, felter med en sidelængde, der normalt er af størrelsesordenen én eller nogle få centimeter. Hensigten er angiveligt at hindre luftstrømning langs pladematerialets overside og derved også at modvirke en luftbe-vægelse gennem dette perforede plademateriale, uden at der samtidig sker en væsentlig reduktion af lydabsorptionsevnen, navnlig i højtoneområdet, således som det er tilfældet, når en tæt folie.fladelimes til det perforede plademateriale^ From the description of Danish patent 128 947, a sound-absorbing ceiling covering is known consisting of elements of thin, perforated sheet material and absorption material applied in these elements, such as mineral wool flakes, as well as an air- and particle-proof foil inserted between the sheet material and the absorption material, which is glued to the sheet material in a cross pattern consisting of two intersecting sets of continuous adhesive strips. It is stated that the foil is preferably a plastic foil with a thickness of around 10 yu or less, and that it forms a sort of waffle-like coating on the upper side of the sheet material, as the adhesive strips divide the foil into a large number of usually rectangular, possibly square, fields with a side length, which is normally of the order of one or a few centimeters. The intention is allegedly to prevent air flow along the upper side of the sheet material and thereby also to prevent air movement through this perforated sheet material, without there being at the same time a significant reduction in the sound absorption capacity, especially in the high-pitched area, as is the case when a dense foil is glued to the perforated sheet material^
Ved praktisk udførelse af den kendte loftbeklædning er det konstateret, at lydabsorptionsevnen ikke i alle tilfælde står mål med forventningerne. Plastfolien har således vist sig at virke reducerende på mineraluldens evne til at absor-bere lyd og i nogle tilfælde endog i en sådan grad, at mine-ralulden bliver næsten virkningsløs, uanset lagtykkelsen. Denne reduktionsvirkning varierer desuden betydeligt med plastfoliens fysiske beskaffenhed, herunder dens komposition og smeltepunkt samt dens tykkelse og tykkelsesvariationer, In practical execution of the known ceiling covering, it has been established that the sound absorption capacity does not in all cases meet expectations. The plastic foil has thus been shown to have a reducing effect on the mineral wool's ability to absorb sound and in some cases even to such an extent that the mineral wool becomes almost ineffective, regardless of the layer thickness. This reduction effect also varies considerably with the physical nature of the plastic film, including its composition and melting point as well as its thickness and thickness variations,
og det er konstateret, at disse faktorer kan variere så meget i en og samme rulle plastfolie, at den nævnte reduktions- and it has been established that these factors can vary so much in one and the same roll of plastic film, that the mentioned reduction
virkning påvirkes stæirkt. En yderligere betydningsfuld faktor er limstriberne, hvis tykkelse og bredde kan være vanskelig at styre med tilstrækkelig nøjagtighed, og som ved at skabe direkte kontakt mellem folien og pladematerialet må forudses at reducere det virksomme absorptions-areal proportionalt med limstribearealet. effect is strongly affected. A further significant factor is the adhesive strips, whose thickness and width can be difficult to control with sufficient accuracy, and which, by creating direct contact between the foil and the sheet material, must be expected to reduce the effective absorption area proportionally to the adhesive strip area.
Med udgangspunkt i den forklarede, kendte teknik tager opfindelsen sigte på at anvise et lydabsorberingsaggregat, der også består af perforeret plade og folie, men hvis lydabsorptionsevne også under praktiske forhold kan styres på ønsket måde. Based on the explained, known technique, the invention aims to provide a sound absorption unit, which also consists of perforated plate and foil, but whose sound absorption capacity can also be controlled in the desired manner under practical conditions.
Nærmere angivet angår opfindelsen et lydabsorberingsaggregat, der på kendt måde består af tyndt, perfo-ret plademateriale, såsom aluminiumplade, og en til dettes ene side fastholdt folie, fortrinsvis en plastfolie med en tykkelse på omkring 10-50^. Fra de kendte udførel-ser af samme art adskiller dette aggregat ifølge opfindelsen sig ved, at folien mellem fastholdelsesstederne er holdt i en absorptionsmæssigtoptimal afstand fra pladematerialet. Dette kan i praksis hensigtsmæssigt være sikret ved, at der mellem pladematerialet og folien er indskudt et net, som ved limning eller svejsning er bundet til såvel pladematerialet som folien, og hvis maskevidde er af størrelsesordenen 1-5 mm. In more detail, the invention relates to a sound absorption unit, which in a known manner consists of thin, perforated plate material, such as aluminum plate, and a film fixed to one side thereof, preferably a plastic film with a thickness of around 10-50 µm. According to the invention, this aggregate according to the invention differs from the known designs of the same kind in that the foil between the fixing points is kept at an absorption-optimal distance from the sheet material. In practice, this can conveniently be ensured by inserting a net between the sheet material and the foil, which is bound to both the sheet material and the foil by gluing or welding, and whose mesh size is of the order of 1-5 mm.
Trods omfattende forsøg og teoretiske analyser er det ikke lykkedes at finde frem til en entydig forkla-ring på, hvorfor afstanden mellem folien og pladematerialet er af afgørende betydning for lydabsorptionsevnen, men det er konstateret, at der ved aggregatet ifølge opfindelsen forekommer et sådant samspil mellem det perforede plademateriale, det luftfyldte hulrum og folien, at en tilfredsstillende lydabsorption kan opnås helt uden brug af mineraluld eller andet porøst materiale. Dette er selvsagt af stor betydning ikke blot i økonomisk hen-seende, men også af miljømæssige grunde,, idet sådanne ma-terialer kan give anledning til generende støv. Despite extensive experiments and theoretical analyses, it has not been possible to find a clear explanation as to why the distance between the foil and the sheet material is of decisive importance for the sound absorption capacity, but it has been established that with the aggregate according to the invention, such an interaction occurs between the perforated sheet material, the air-filled cavity and the foil, that a satisfactory sound absorption can be achieved completely without the use of mineral wool or other porous material. This is of course of great importance, not only in economic terms, but also for environmental reasons, as such materials can give rise to nuisance dust.
Det kan betragtes som fastslået, at lydabsorptions-virkningen i hvert fald for en væsentlig del beror på, at folien opdeles i et meget stort antal småarealer eller småmembraner, der svinger selvstændigt sammen med den perforerede plade, men ude af takt med denne. En yderligere sandsynlig årsag kan være, at der mellem folien og pladematerialet findes et lag luftfyldte celler, hvortil der er adgang gennem pladens perforeringshuller. Disse enkeltceller virker lydslugende. Det er ligeledes konstateret, at den sædvanligvis med mineraluld opnåede hul-rumsabsorption også opnås ved aggregatet ifølge opfindelsen, så at ekstra foranstaltninger hertil er minimeret. Ved anvendelse af et net som foran angivet får de omtalte membraner eller celler en regelmæssig facon, eksempelvis med kvadratisk form eller sekskantform, men dette er mindre betydningsfuldt, eftersom et floragtigt materiale, såsom glasfiberflor, også har vist sig anvendeligt i ste-det for et egentligt net med regelmæssige masker. It can be considered established that the sound absorption effect, at least for a significant part, is due to the foil being divided into a very large number of small areas or small membranes, which oscillate independently together with the perforated plate, but out of step with it. A further probable reason could be that there is a layer of air-filled cells between the foil and the sheet material, to which there is access through the sheet's perforation holes. These single cells seem to absorb sound. It has also been established that the cavity absorption usually achieved with mineral wool is also achieved with the aggregate according to the invention, so that extra measures for this are minimized. When using a net as stated above, the mentioned membranes or cells are given a regular shape, for example with a square shape or a hexagonal shape, but this is less significant, since a flake-like material, such as glass fiber flake, has also been shown to be usable instead of a actual mesh with regular meshes.
En væsentlig fordel ved lydabsorberingsaggregatet ifølge opfindelsen er, at utilsigtede variationer i den anvendte folie, specielt tykkelses- og kompositionsva- .. riationer, bliver praktisk talt betydningsløse for det færdige aggregats lydabsorberingsevne. Denne kan på den anden side varieres efter ønske inden for ret vide græn-ser, navnlig med hensyn til det mest fremtrædende fre-kvensområde, ved ændring af pladematerialets tykkelse og perforerihgsprocent samt foliens og nettets tykkelse og netmaskernes størrelse og form. Herved bliver det muligt på økonomisk måde at fremstille aggregater med nærmere specificerede lyddæmpningsegenskaber f.eks. til opfyldel-se af krav om tilpasset lydabsorption.'A significant advantage of the sound absorption unit according to the invention is that unintended variations in the foil used, especially thickness and composition variations, become practically insignificant for the finished unit's sound absorption capacity. This, on the other hand, can be varied as desired within fairly wide limits, especially with regard to the most prominent frequency range, by changing the thickness and percentage of perforation of the sheet material as well as the thickness of the foil and the net and the size and shape of the net meshes. This makes it possible in an economical way to produce aggregates with more precisely specified sound dampening properties, e.g. to meet requirements for adapted sound absorption.'
Tilvejebringelsen af den ønskede afstand mellem pladematerialet og folien kan også sikres på anden måde end ved indlægning af et net eller en tilsvarende struk-tur mellem de pågældende dele, idet nettet kan indgå som en bestanddel i folien, eller denne og/eller pladematerialet kan være præget med lave ribber eller forhøjnin-ger til sikring af afstanden. The provision of the desired distance between the sheet material and the foil can also be ensured in other ways than by inserting a net or a similar structure between the parts in question, since the net can be included as a component of the foil, or this and/or the sheet material can be marked with low ribs or elevations to secure the distance.
Tegningen viser en udførelsesform for lydabsorberingsaggregatet ifølge opfindelsen. The drawing shows an embodiment of the sound absorption unit according to the invention.
I denne udførelsesform har aggregatet en rektan-gulær plade 1 af stål eller aluminium, der er perforeret mellem de parallelle linier 2,2, altså mellem et par modstående kantpartier 3,3 uden perfo-rering. In this embodiment, the unit has a rectangular plate 1 of steel or aluminium, which is perforated between the parallel lines 2,2, i.e. between a pair of opposite edge parts 3,3 without perforation.
Et stykke plastfolie 4 med en tykkelse på eksempelvis 25y og med et net 5 på undersiden dæk-ker det perforerede område af pladen 1 og strækker sig et lille stykke uden for dette som antydet ved linierne 6,6. Nettet 5 er ved klæbning fastholdt til både plastfolien 4 og metalpladen 1 og danner mellem disse et lag af luftfyldte celler, der til den ene side er lukket af plastfolien, men til den anden side har åben forbindelse til omgivelserne gennem perforeringshullerne i pladen 1. A piece of plastic foil 4 with a thickness of, for example, 25y and with a net 5 on the underside covers the perforated area of the plate 1 and extends a small distance beyond this as indicated by the lines 6,6. The net 5 is fixed to both the plastic foil 4 and the metal plate 1 by adhesion and forms between them a layer of air-filled cells, which on one side is closed by the plastic foil, but on the other side has an open connection to the surroundings through the perforation holes in the plate 1.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK4379A DK4379A (en) | 1979-01-04 | 1979-01-04 | SOUND ABSORPTION UNIT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO794220L true NO794220L (en) | 1980-07-07 |
Family
ID=8089085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO794220A NO794220L (en) | 1979-01-04 | 1979-12-20 | COMPOSITION SOUND-ABSORBING MATERIALS. |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0013513B1 (en) |
| JP (1) | JPS5592446A (en) |
| AT (1) | ATE9017T1 (en) |
| AU (1) | AU533557B2 (en) |
| DE (1) | DE2967185D1 (en) |
| DK (1) | DK4379A (en) |
| EG (1) | EG14896A (en) |
| ES (1) | ES256657Y (en) |
| FI (1) | FI800007A (en) |
| MX (1) | MX149377A (en) |
| NO (1) | NO794220L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3242940A1 (en) * | 1982-11-20 | 1984-05-24 | Hans Julius 6303 Hungen Schmitt | ACOUSTICALLY EFFECTIVE COMPONENT |
| DE4007556C2 (en) * | 1990-03-09 | 1998-05-07 | Gruenzweig & Hartmann Montage | Resonator backdrop for backdrop silencers |
| JP2522604B2 (en) * | 1990-04-26 | 1996-08-07 | 株式会社ユニックス | Sound absorbing material and method for manufacturing the same |
| CA2091288C (en) * | 1992-03-13 | 1995-11-28 | Toru Morimoto | Membranous-vibration sound absorbing materials |
| IT231856Y1 (en) * | 1993-03-05 | 1999-08-06 | Eurofibre Spa | THERMAL INSULATION AND SOUND ABSORBING PANEL |
| ATE288001T1 (en) | 2000-03-20 | 2005-02-15 | Newmat Sa | FLEXIBLE POLYMER FILM FOR STRETCHED STRUCTURES, METHOD FOR THE PRODUCTION THEREOF AND SUBSTRATE CEILING WITH THIS FILM |
| DE10337878B4 (en) | 2003-08-18 | 2008-02-21 | Silu Verwaltung Ag | Assembly tape with section-wise cover foil |
| FR2926099B1 (en) * | 2008-01-09 | 2010-03-19 | Normalu | PATCH FOR ACCOUSTIC TIGHTS, SEALED AND PARTIALLY TRANSLUCENT |
| FR2970009B1 (en) * | 2010-12-30 | 2021-06-11 | Normalu | ACOUSTICALLY ABSORBENT PACKAGE |
| US11091909B2 (en) | 2017-05-08 | 2021-08-17 | Kvadrat Soft Cells A/S | Building panel adapted to be mounted at a ceiling or wall of a room and method of manufacturing such building panel |
Family Cites Families (5)
| 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 |
| US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
| US3948347A (en) * | 1974-11-25 | 1976-04-06 | Gallagher-Kaiser Corporation | Acoustical panel |
| JPS5719759Y2 (en) * | 1976-01-28 | 1982-04-26 |
-
1979
- 1979-01-04 DK DK4379A patent/DK4379A/en unknown
- 1979-12-20 NO NO794220A patent/NO794220L/en unknown
- 1979-12-28 ES ES1979256657U patent/ES256657Y/en not_active Expired
- 1979-12-28 AT AT79303073T patent/ATE9017T1/en not_active IP Right Cessation
- 1979-12-28 EP EP79303073A patent/EP0013513B1/en not_active Expired
- 1979-12-28 DE DE7979303073T patent/DE2967185D1/en not_active Expired
-
1980
- 1980-01-02 AU AU54268/80A patent/AU533557B2/en not_active Ceased
- 1980-01-02 FI FI800007A patent/FI800007A/en not_active Application Discontinuation
- 1980-01-03 MX MX180672A patent/MX149377A/en unknown
- 1980-01-04 JP JP26480A patent/JPS5592446A/en active Granted
- 1980-01-05 EG EG08/80A patent/EG14896A/en active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0013513A1 (en) | 1980-07-23 |
| EP0013513B1 (en) | 1984-08-15 |
| FI800007A (en) | 1980-07-05 |
| ATE9017T1 (en) | 1984-09-15 |
| AU533557B2 (en) | 1983-12-01 |
| JPS5592446A (en) | 1980-07-12 |
| JPS6310258B2 (en) | 1988-03-04 |
| MX149377A (en) | 1983-10-28 |
| ES256657Y (en) | 1981-12-16 |
| EG14896A (en) | 1986-12-30 |
| DE2967185D1 (en) | 1984-09-20 |
| AU5426880A (en) | 1980-07-10 |
| ES256657U (en) | 1981-07-01 |
| DK4379A (en) | 1980-07-05 |
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