EP0095125B1 - Elément plan pour l'absorption d'ondes sonores - Google Patents
Elément plan pour l'absorption d'ondes sonores Download PDFInfo
- Publication number
- EP0095125B1 EP0095125B1 EP83104841A EP83104841A EP0095125B1 EP 0095125 B1 EP0095125 B1 EP 0095125B1 EP 83104841 A EP83104841 A EP 83104841A EP 83104841 A EP83104841 A EP 83104841A EP 0095125 B1 EP0095125 B1 EP 0095125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- sound
- foam layer
- wave absorption
- foam
- 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
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24496—Foamed or cellular component
- Y10T428/24504—Component comprises a polymer [e.g., rubber, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24562—Interlaminar spaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24826—Spot bonds connect components
Definitions
- the invention relates to a flat element for airborne sound absorption, consisting of a flexible, open-cell foam layer with an air-impermeable cover layer made of a film.
- GB-A-1 579 897 Also known from GB-A-1 579 897 is a laminated, multilayer sound absorber, in which an air-impermeable film is connected to the actual absorber material as protection against contamination via a perforated or highly air-permeable spacer layer.
- This elastic spacer layer has the task, on the one hand, of providing the necessary mechanical strength to the film which is untensioned due to the avoidance of reflection and, on the other hand, of allowing the sound waves to continue unimpeded into the absorber material, where they are then converted into heat.
- the absorption essentially depends on the position and width of the frequency band.
- the coordination between film and foam mass, i.e. their mutual assignment, attachment and mass ratio are often decisive. It is also essential that no additional fasteners are used in the form of foreign substances that would negatively affect the damping.
- the invention has for its object to provide an element for airborne noise reduction, which has a higher efficiency compared to the known arrangements and which can be easily adapted in a wide range in terms of frequency and bandwidth.
- the foam layer has at least on one side a profiled surface with wave-shaped, mutually offset bumps, on the profile tips of the membrane-like stretched plastic film with a thickness of less than 50 microns is selectively attached.
- the corresponding hump-like profiling of the foam and the selective attachment of the film ensures that the film can practically vibrate like a freely stretched membrane.
- the air cushion / plastic film resonance system also contributes to particularly good damping.
- Such a structure dampens in particular low to medium frequencies.
- the damping is essentially dependent on the film thickness in the sense that when the film becomes thicker, the lower frequencies are damped. In principle, attenuation to lower frequencies is possible by reinforcing the film and / or foam.
- Another possible variation of the damping consists in changing the shape or the depth of the profile. It has been found to be particularly advantageous that the film and foam are connected directly to one another.
- the foam layer 1 has a profiled surface with mutually offset rows of bumps 2 and 3.
- a polyurethane foam with a bulk density of 16 to about 80 kg / m 3 can expediently be used as the material.
- a thin plastic film 4 is then laminated onto the bump-like profile tips in such a way that the plastic film 4 is only connected to the foam at the profile tips 5 and 6.
- the connection is expediently made by flame lamination, so that no additional material, such as adhesive, hinders the damping.
- the film is expediently thinner than 50 microns and can consist of polyurethane, polyethylene or polyvinyl chloride.
- the film 4 is connected to the foam only at relatively small points 5 and 6 which are far apart in relation to the fastening surface. This results in a large effective area of exposed film areas, which can vibrate freely like a membrane and thereby extract energy from the impinging sound waves, so that optimal damping is achieved.
- the main areas of application for such flat elements are sound-absorbing linings of machine housings or motor enclosures or corresponding cabins.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3219339A DE3219339C1 (de) | 1982-05-22 | 1982-05-22 | Flaechiges Element zur Luftschall-Absorption |
DE3219339 | 1982-05-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0095125A2 EP0095125A2 (fr) | 1983-11-30 |
EP0095125A3 EP0095125A3 (en) | 1984-09-26 |
EP0095125B1 true EP0095125B1 (fr) | 1987-05-20 |
Family
ID=6164288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83104841A Expired EP0095125B1 (fr) | 1982-05-22 | 1983-05-17 | Elément plan pour l'absorption d'ondes sonores |
Country Status (5)
Country | Link |
---|---|
US (1) | US4469736A (fr) |
EP (1) | EP0095125B1 (fr) |
JP (1) | JPS58209792A (fr) |
DE (2) | DE3219339C1 (fr) |
ES (1) | ES272335Y (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60113375A (ja) * | 1983-11-24 | 1985-06-19 | Mitsubishi Plastics Ind Ltd | フロツピ−デイスクジヤケツト |
US4690847A (en) * | 1986-06-26 | 1987-09-01 | Burlington Industries, Inc. | Cold weather garment structure |
IN170733B (fr) * | 1986-06-26 | 1992-05-09 | Burlington Industries Inc | |
US4863791A (en) * | 1987-04-06 | 1989-09-05 | United Technologies Automotive, Inc. | Sound absorption in foam core panels |
FR2675936B1 (fr) * | 1991-04-24 | 1993-08-20 | Noisetec Sa | Dispositif d'insonorisation, notamment pour systemes de ventilation. |
DE9110552U1 (fr) * | 1991-08-26 | 1992-12-24 | Irbit Research + Consulting Ag, Freiburg/Fribourg, Ch | |
JPH081114U (ja) * | 1991-11-20 | 1996-07-02 | 株式会社ダイウレ | 遮音材 |
US5858283A (en) * | 1996-11-18 | 1999-01-12 | Burris; William Alan | Sparger |
JPH1167402A (ja) * | 1997-08-08 | 1999-03-09 | Harness Sogo Gijutsu Kenkyusho:Kk | 吸音材および該吸音材を備えたケーブルリール |
GB9727469D0 (en) * | 1997-12-30 | 1998-02-25 | Sugden Kurt D | Fabric material |
DE10358595A1 (de) * | 2003-12-15 | 2005-07-21 | Cellofoam Gmbh & Co. Kg | Schallabsorbierendes flächiges Schaumstoffmaterial |
DE10358593A1 (de) * | 2003-12-15 | 2005-07-14 | Cellofoam Gmbh & Co. Kg | Schallabsorbierendes flächiges Schaumstoffmaterial |
JP2005283703A (ja) * | 2004-03-29 | 2005-10-13 | Inoac Corp | 吸音材 |
SI2052828T1 (sl) | 2007-10-23 | 2011-05-31 | Retro Flex Ag | Porozne teĹľke protihrupne folije, protihrupni sistem in postopek izdelave porozne teĹľke protihrupne folije |
US8770344B2 (en) * | 2010-07-13 | 2014-07-08 | Bellmax Acoustic Pty Ltd. | Acoustic panel |
GB2486714A (en) * | 2010-12-23 | 2012-06-27 | Levolux At Ltd | Acoustic louvre having sound energy absorption element encased by a watertight element |
WO2014055991A1 (fr) * | 2012-10-05 | 2014-04-10 | Leonard Michael R | Système d'isolation en couches |
US9362799B2 (en) * | 2014-04-14 | 2016-06-07 | Cummins Power Generation Ip, Inc. | Acoustic covering for a generator set enclosure with pressure sensitive adhesive |
RU2593401C1 (ru) * | 2015-02-25 | 2016-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный архитектурно-строительный университет" | Звукопоглощающая панель |
RU185081U1 (ru) * | 2017-07-12 | 2018-11-21 | Общество с ограниченной ответственностью "ШиКор" | Звукоизоляционный материал |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2984312A (en) * | 1959-04-24 | 1961-05-16 | Owens Corning Fiberglass Corp | Acoustical wall board |
US3360423A (en) * | 1961-09-21 | 1967-12-26 | Gen Tire & Rubber Co | Flexible structural foam sandwich construction |
US3356562A (en) * | 1964-06-22 | 1967-12-05 | Cincinnati Ind Inc | Materials and methods for the production of stereotype mats |
JPS5112856B1 (fr) * | 1967-05-09 | 1976-04-22 | ||
US3712846A (en) * | 1971-06-23 | 1973-01-23 | Carpenter L & Co | Acoustical panel |
DE2246621A1 (de) * | 1972-09-22 | 1974-03-28 | Albert Schrey | Akustikplatte |
SE402142B (sv) * | 1976-06-03 | 1978-06-19 | Becker Wilhelm Ab | Laminerad ljudabsorbent |
-
1982
- 1982-05-22 DE DE3219339A patent/DE3219339C1/de not_active Expired
-
1983
- 1983-05-17 EP EP83104841A patent/EP0095125B1/fr not_active Expired
- 1983-05-17 DE DE8383104841T patent/DE3371615D1/de not_active Expired
- 1983-05-19 ES ES1983272335U patent/ES272335Y/es not_active Expired
- 1983-05-20 US US06/496,663 patent/US4469736A/en not_active Expired - Lifetime
- 1983-05-20 JP JP58089031A patent/JPS58209792A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0444279B2 (fr) | 1992-07-21 |
DE3219339C1 (de) | 1983-02-03 |
US4469736A (en) | 1984-09-04 |
JPS58209792A (ja) | 1983-12-06 |
EP0095125A3 (en) | 1984-09-26 |
ES272335Y (es) | 1984-07-01 |
DE3371615D1 (en) | 1987-06-25 |
ES272335U (es) | 1983-11-16 |
EP0095125A2 (fr) | 1983-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0095125B1 (fr) | Elément plan pour l'absorption d'ondes sonores | |
DE3044865C2 (fr) | ||
DE2408028C3 (fr) | ||
DE10347084B4 (de) | Abstimmbare, den Schall absorbierende, und die Luft filternde Dämpfungseinrichtung und Herstellungsverfahren | |
EP0531761B1 (fr) | Absorbeur | |
DE19804718C2 (de) | Schall absorbierende Sandwichwand | |
EP1060073B1 (fr) | Stratifie | |
WO1998016915A1 (fr) | Dispositif pour absorber et/ou amortir des ondes sonores | |
EP0781445A1 (fr) | Absorbeur phonique a plusieurs couches pour l'absorption d'ondes acoustiques | |
CH692731A5 (de) | Ultraleichter, schall- und schockabsorbierender Bausatz. | |
DE4408782A1 (de) | Folien-Schallabsorber | |
WO2000036240A1 (fr) | Corps moules structures pour l'absorption acoustique | |
DE2724172A1 (de) | Schallschluckender schichtstoff | |
EP0640951B1 (fr) | Elément de construction à plusieurs couches pour l'atténuation du son | |
DE1605884A1 (de) | Wand,insbesondere eines Fahrzeuges | |
DE3412432A1 (de) | Schallabsorbierendes bauelement | |
DE2609872A1 (de) | Schalldaempfer fuer stroemungskanaele | |
DE102005002621B3 (de) | Hermetisch abgeschlossenes Modul zur Schalldämpfung | |
DE2437947C3 (de) | Anordnung zur Absorption von Luftschall | |
EP0236810B1 (fr) | Construction pour l'atténuation du son par absorption | |
EP2275253A1 (fr) | Elément d'amortissement de bruit | |
DE3217784A1 (de) | Schalldaemmendes element mit resonatoren | |
EP0150373A2 (fr) | Amortisseur de vibrations | |
DE2531866C2 (de) | Wandelement zur breitbandigen Schallabsorption unter Ausnutzung des Koinzidenzeffektes | |
DE4206615A1 (de) | Schallschluckende bauplatte |
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 |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19830517 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 3371615 Country of ref document: DE Date of ref document: 19870625 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010427 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010518 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20010531 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021203 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030131 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |