EP0447797A2 - Sound damping element - Google Patents
Sound damping element Download PDFInfo
- Publication number
- EP0447797A2 EP0447797A2 EP91102075A EP91102075A EP0447797A2 EP 0447797 A2 EP0447797 A2 EP 0447797A2 EP 91102075 A EP91102075 A EP 91102075A EP 91102075 A EP91102075 A EP 91102075A EP 0447797 A2 EP0447797 A2 EP 0447797A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- component according
- soundproofing component
- grooves
- soundproofing
- cover film
- 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
- 238000013016 damping Methods 0.000 title abstract 3
- 239000013039 cover film Substances 0.000 claims description 13
- 239000006260 foam Substances 0.000 claims description 10
- 239000000123 paper Substances 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 239000012876 carrier material Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 239000011111 cardboard Substances 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 4
- 239000011087 paperboard Substances 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 244000098338 Triticum aestivum Species 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract 2
- 238000009413 insulation Methods 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
Definitions
- the invention relates to a soundproofing component with surface profiles.
- a sound absorber which consists of a polyethylene foam plate which has channel-shaped cavities with different cross sections which are connected to the environment (outside air) via slots.
- the cross sections of the cavities can be round or angular.
- the depth of the slots mentioned is different.
- This sound absorber is therefore not provided with surface profiles, but rather has a flat surface, the distance between the slots being a multiple of the slot width.
- DE-A1 32 42 940 discloses an acoustically effective component made of a perforated or slotted board, to which a nonwoven fabric is applied, which perforates the board tympanic membrane spanned and thereby causes increased flow resistance in the area of the perforations, which defines the desired sound absorption capacity of the component.
- the surface of the component covered by the nonwoven fabric has a smooth surface. The perforations form sharp edges with the plate surface.
- DE-A1-26 02 839 discloses a plate which consists of a double-sided corrugated cardboard forming a reinforcement, as well as a further plate and tapes made of polyurethane foam, which are used as padding for the corrugated cardboard and for filling and reinforcing the folds and breaks caused by the shaping serve.
- a cladding covering and an elastomer solution are also provided, which at the same time ensure that the various components of the plate are connected and - after their polymerization - the rigidity of the foam and the cardboard.
- the invention has for its object to improve the sound insulation effect of the components described above.
- this object is achieved according to the invention in that the surface profiles are parallel, mutually separated by bead-like webs, outwardly open grooves, the cross section of which has a slightly undercut shape, so that the sound entry slot merges into an expanding groove interior .
- the grooves are close to one another and are only separated from one another by bead-like webs.
- the sound entry slot is therefore comparatively much wider than in the sound absorber explained at the beginning.
- the surface of the designed according to the invention Soundproofing component is therefore predominantly open to the entry of sound waves into the grooves, this sound wave entry being only opposed by the linear webs which are rounded on their outer contour, but which do not form smooth or sharp-edged reflection surfaces.
- the groove cross section can correspond approximately to a circular surface segment with more than 180 degrees of circumference or, in an alternative solution, can be approximately W-shaped.
- the sound impact area of these groove profiles is considerably larger than in the known surface surveys. Due to the undercut design of the grooves can be within everyone Achieve a multiple impact of the sound waves on the inner walls of the groove, so that at least some of the sound waves practically "run dead".
- the width of the sound inlet slot and / or the inner contour of the grooves can be adapted accordingly at a constant frequency of a sound source in order to achieve optimal sound absorption.
- the soundproofing component according to the invention preferably consists at least predominantly of paper foam or fluff, which is expediently composed of fifty parts paper and / or cardboard, thirty parts starch, e.g. B. wheat and twenty parts of polyvinyl alcohol (PVA).
- paper foam or fluff which is expediently composed of fifty parts paper and / or cardboard, thirty parts starch, e.g. B. wheat and twenty parts of polyvinyl alcohol (PVA).
- the PVA can be added as finely ground granules, as an aqueous solution or as a dispersion and leads to better foaming in the end product with good elasticity / flexibility.
- Plasticizers and / or lubricants e.g. Glycerol can be added.
- the soundproofing component as described above can be pressed or extruded.
- the surface forming the grooves it is also possible for the surface forming the grooves to be formed by a correspondingly deformed cover film which is fixed on a carrier material consisting of paper foam or fluff.
- the cover film is preferably made permeable to sound and can be a perforated plate or wire mesh.
- the carrier material also has grooves running parallel to one another on its surface facing the cover film, which are similar in cross section to that of the cover film grooves but run transversely to them.
- Figure 1 shows a detail of the corner area of the front view of a plate-shaped soundproofing component with an outwardly open groove 1, the cross section of which corresponds approximately to a circular area segment with more than 180 degrees of circumference, so that the sound inlet slot 2 merges into an expanding groove interior 3.
- Lines 4 symbolizing the sound waves make it clear that a part of the sound waves "runs dead” due to multiple impacts on the inner wall of the groove.
- Figure 2 shows a modified embodiment for the groove cross section.
- the groove inner contour is approximately W-shaped and is composed of groove walls 5, 6 that are curved outwards and inwards.
- the diameter and / or circumferential degrees of the grooves can be adapted to the sound frequency to be insulated in order to optimize the sound insulation.
- FIG. 3 shows a plate-shaped soundproofing component with mutually opposite grooves (1) which are offset by half a groove pitch.
- Such components can, for. B. use as impact sound plates, which then only result in punctiform or linear loads between a cover plate, not shown, and the component according to the invention. Due to the offset groove arrangement, the appropriately bead-shaped webs 7, which separate the grooves 1 from one another, each face a groove 1. This increases the strength of the component.
- Figure 4 shows that the soundproofing component can also be tubular. Also in this embodiment, mutually opposed and mutually offset grooves offset by half a groove pitch would be possible, in which case the inner grooves 1 in conjunction with the webs 7 separating them would bring about additional insulation of the tube 8.
- the soundproofing components shown in FIGS. 1 to 4 can consist of paper foam or paper fluff, which is preferably composed of paper and / or cardboard, starch and polyvinyl alcohol (PVA). Such components can be pressed or they can also be extruded, the water-soluble PVA added as granules or dispersion serving as a plasticizer, which gives the paper foam or paper fluff greater flexibility. Anti-inflammatory additives, dyes or the like can also be added to the material.
- PVA polyvinyl alcohol
- cover sheet 9 which is fixed on a carrier material 10, which consists of paper foam or fluff.
- the cover sheet 9 is preferably sound-permeable and can, for. B. be a perforated plate or wire mesh.
- a non-woven fabric can be provided between the cover film 9 and the carrier material 10, in particular for absorbing moisture.
- FIG. 5 an embodiment according to FIG. 5 can be provided, in which the carrier material 10 also has grooves 1 running parallel to one another on its surface facing the cover film 9, which are similar in cross section to that of the cover film grooves, but run transversely to them.
- the carrier material 10 then consists of a body such. B. according to Figure 1 or 2. Impinging sound waves that still penetrate through the cover sheet 9 due to their intensity, are then broken again several times, absorbed and almost completely insulated.
- Such an insulation board construction is expediently supported by a rigid rear wall made of wood, sheet metal or the like and is gripped by means of a frame (not shown).
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
Abstract
Description
Die Erfindung betrifft ein Schalldämmbauteil mit Oberflächenprofilierungen.The invention relates to a soundproofing component with surface profiles.
Es ist bekannt, bei Schalldämmbauteilen die der Schallquelle zugewandte Oberfläche mit trapez-, kegel- oder pyramidenförmigen Erhebungen zu versehen.It is known in the case of soundproofing components to provide the surface facing the sound source with trapezoidal, conical or pyramidal elevations.
Durch die DE-B1-28 34 683 ist ein Schallabsorber bekannt geworden, der aus einer Polyäthylenschaum-Platte besteht, die kanalförmige Hohlräume mit verschiedenen Querschnitten aufweist, die über Schlitze mit der Umgebung (Außenluft) in Verbindung stehen. Dabei können die Hohlraumquerschnitte rund oder eckig sein. Die Tiefe der genannten Schlitze ist unterschiedlich. Dieser Schallabsorber ist somit nicht mit Oberflächenprofilierungen versehen, sondern weist eine plane Oberfläche auf, wobei der Abstand der Schlitze voneinander ein Vielfaches der Schlitzbreite beträgt.From DE-B1-28 34 683 a sound absorber has become known which consists of a polyethylene foam plate which has channel-shaped cavities with different cross sections which are connected to the environment (outside air) via slots. The cross sections of the cavities can be round or angular. The depth of the slots mentioned is different. This sound absorber is therefore not provided with surface profiles, but rather has a flat surface, the distance between the slots being a multiple of the slot width.
Die DE-A1 32 42 940 offenbart ein akkustisch wirksames Bauelement aus einer gelochten oder geschlitzten Tafel, auf die ein Faservlies aufgebracht ist, das die Lochungen der Tafel trommelfellartig überspannt und dadurch im Bereich der Lochungen einen erhöhten Strömungswiderstand bewirkt, der die angestrebte Schallschluckfähigkeit des Bauelementes definiert. Die von dem Faservlies abgedeckte Oberfläche des Bauelementes ist glattflächig ausgebildet. Die Lochungen bilden mit der Plattenoberfläche scharfe Kanten.DE-A1 32 42 940 discloses an acoustically effective component made of a perforated or slotted board, to which a nonwoven fabric is applied, which perforates the board tympanic membrane spanned and thereby causes increased flow resistance in the area of the perforations, which defines the desired sound absorption capacity of the component. The surface of the component covered by the nonwoven fabric has a smooth surface. The perforations form sharp edges with the plate surface.
Die DE-A1-26 02 839 offenbart eine Platte, die aus einer eine Armierung bildenden doppelseitigen Wellpappe sowie aus einer weiteren Platte und aus Bänden aus Polyurethanschaumstoff besteht, die als Polsterung der Wellpappe und zum Ausfüllen und verstärken der durch das Formen erzeugten Falten und Brüche dienen. Vorgesehen ist ferner ein Verkleidungsüberzug und eine Elastomerlösung, die gleichzeitig diejenige Verbindung der verschiedenen Bestandteile der Platte und - nach ihrer Polymerisation - die Starrheit des Schaumstoffes und der Pappe gewährleistet.DE-A1-26 02 839 discloses a plate which consists of a double-sided corrugated cardboard forming a reinforcement, as well as a further plate and tapes made of polyurethane foam, which are used as padding for the corrugated cardboard and for filling and reinforcing the folds and breaks caused by the shaping serve. A cladding covering and an elastomer solution are also provided, which at the same time ensure that the various components of the plate are connected and - after their polymerization - the rigidity of the foam and the cardboard.
Der Erfindung liegt die Aufgabe zugrunde, die Schalldämmwirkung der vorstehend beschriebenen Bauteile zu verbessern.The invention has for its object to improve the sound insulation effect of the components described above.
Ausgehend von einem Schalldämmbauteil mit Oberflächenprofilierungen wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die Oberflächenprofilierungen parallel zueinander verlaufende, durch wulstartige Stege voneinander getrennte, nach außen offene Nuten sind, deren Querschnitt eine leicht hinterschnittene Form aufweist, so daß der Schalleintrittsschlitz in einen sich erweiternden Nutinnenraum übergeht.Starting from a soundproofing component with surface profiles, this object is achieved according to the invention in that the surface profiles are parallel, mutually separated by bead-like webs, outwardly open grooves, the cross section of which has a slightly undercut shape, so that the sound entry slot merges into an expanding groove interior .
Erfindungsgemäß liegen also die Nuten dicht nebeneinander und sind voneinander lediglich durch wulstartig ausgebildete Stege getrennt. Der Schalleintrittsschlitz ist somit vergleichsweise sehr viel breiter ausgebildet als bei dem eingangs erläuterten Schallabsorber. Die Oberfläche des erfindungsgemäß ausgebildeten Schalldämmbauteiles ist somit überwiegend offen für den Eintritt von Schallwellen in die Nuten, wobei diesem Schallwelleneintritt lediglich die linienförmig verlaufenden, auf ihrer Außenkontur abgerundeten Stege entgegenstehen, die aber keine glatten bzw. scharfkantigen Reflektionsflächen bilden.According to the invention, the grooves are close to one another and are only separated from one another by bead-like webs. The sound entry slot is therefore comparatively much wider than in the sound absorber explained at the beginning. The surface of the designed according to the invention Soundproofing component is therefore predominantly open to the entry of sound waves into the grooves, this sound wave entry being only opposed by the linear webs which are rounded on their outer contour, but which do not form smooth or sharp-edged reflection surfaces.
Dabei kann der Nutquerschnitt etwa einem Kreisflächensegment mit mehr als 180 Umfangsgrad entsprechen oder aber in einer Alternativlösung etwa W-förmig gestaltet sein.The groove cross section can correspond approximately to a circular surface segment with more than 180 degrees of circumference or, in an alternative solution, can be approximately W-shaped.
Die Schallauftrefffläche dieser Nutprofilierungen ist erheblich größer als bei den bekannten Oberflächenerhebungen. Durch die hinterschnittene Ausbildung der Nuten läßt sich innerhalb jeder Nut ein mehrfaches Auftreffen der Schallwellen an den Nutinnenwandungen erzielen, so daß sich zumindest ein Teil der Schallwellen praktisch "totläuft". Die Breite des Schalleintrittsschlitzes und/oder die Innenkontur der Nuten kann bei einer ständig gleichbleibenden Frequenz einer Schallquelle entsprechend angepaßt werden, um eine optimale Schallabsorption zu erzielen.The sound impact area of these groove profiles is considerably larger than in the known surface surveys. Due to the undercut design of the grooves can be within everyone Achieve a multiple impact of the sound waves on the inner walls of the groove, so that at least some of the sound waves practically "run dead". The width of the sound inlet slot and / or the inner contour of the grooves can be adapted accordingly at a constant frequency of a sound source in order to achieve optimal sound absorption.
Das erfindungsgemäße Schalldämmbauteil besteht vorzugsweise zumindest überwiegend aus Papierschaum oder -fluff, der sich zweckmäßig zusammensetzt aus fünfzig Teilen Papier und/oder Pappe, dreißig Teilen Stärke, z. B. Weizen und zwanzig Teilen Polyvinylalkohol (PVA).The soundproofing component according to the invention preferably consists at least predominantly of paper foam or fluff, which is expediently composed of fifty parts paper and / or cardboard, thirty parts starch, e.g. B. wheat and twenty parts of polyvinyl alcohol (PVA).
Der PVA kann als feingemahlenes Granulat, als wässrige Lösung oder als Dispersion zugegeben werden und führt im Endprodukt zu einer besseren Aufschäumung mit guter Elastizität/Flexibilität. Außerdem können noch Weichmacher und/oder Gleitmittel, z.B. Glycerol, zugegeben werden.The PVA can be added as finely ground granules, as an aqueous solution or as a dispersion and leads to better foaming in the end product with good elasticity / flexibility. Plasticizers and / or lubricants, e.g. Glycerol can be added.
Das Schalldämmbauteil gemäß vorstehender Beschreibung kann gepreßt oder auch extrudiert werden. In einer abgewandelten Ausführungsform ist es auch möglich, daß die die Nuten bildende Oberfläche durch eine entsprechend verformte Abdeckfolie gebildet ist, die auf einem aus Papierschaum oder -fluff bestehenden Trägermaterial festgelegt ist. Dabei ist die Abdeckfolie vorzugsweise schalldurchlässig ausgebildet und kann ein Lochblech oder Drahtgewebe sein.The soundproofing component as described above can be pressed or extruded. In a modified embodiment, it is also possible for the surface forming the grooves to be formed by a correspondingly deformed cover film which is fixed on a carrier material consisting of paper foam or fluff. The cover film is preferably made permeable to sound and can be a perforated plate or wire mesh.
Zur Erhöhung der Schalldämmung ist es zusätzlich vorteilhaft, wenn das Trägermaterial auf seiner der Abdeckfolie zugewandten Oberfläche ebenfalls parallel zueinander verlaufende Nuten aufweist, die in ihrem Querschnitt ähnlich dem der Abdeckfoliennuten ausgebildet sind aber quer zu diesen verlaufen.To increase the sound insulation, it is additionally advantageous if the carrier material also has grooves running parallel to one another on its surface facing the cover film, which are similar in cross section to that of the cover film grooves but run transversely to them.
Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche und werden in Verbindung mit weiteren Vorteilen der Erfindung anhand von Ausführungsbeispielen näher erläutert.Further features of the invention are the subject of the subclaims and are explained in more detail in connection with further advantages of the invention using exemplary embodiments.
In der Zeichnung sind einige als Beispiele dienende Ausführungsformen der Erfindung dargestellt. Es zeigen:
Figur 1- - im Ausschnitt einen Querschnitt durch ein plattenförmig ausgebildetes Schalldämmbauteil;
- Figur 2
- - eine abgewandelte Ausführungsform in einer Darstellung gemäß
Figur 1; Figur 3- - eine abgewandelte Ausführungsform in einer Darstellung gemäß
Figur 1; Figur 4- - einen Querschnitt durch ein rohrförmig ausgebildetes Schalldämmbauteil;
Figur 5- - in schaubildlicher Darstellung ein plattenförmiges, aus mehreren Lagen gebildetes Schalldämmbauteil und
- Figur 6
- - eine Stirnansicht der Darstellung gemäß
Figur 5.
- Figure 1
- - In the cutout a cross section through a plate-shaped soundproofing component;
- Figure 2
- - A modified embodiment in a representation according to Figure 1;
- Figure 3
- - A modified embodiment in a representation according to Figure 1;
- Figure 4
- - A cross section through a tubular soundproofing component;
- Figure 5
- - In a diagrammatic representation, a plate-shaped, multi-layer sound insulation component and
- Figure 6
- - An end view of the representation according to Figure 5.
Figur 1 zeigt im Ausschnitt den Eckbereich der Stirnansicht eines plattenförmig ausgebildeten Schalldämmbauteils mit einer nach außen offenen Nut 1, deren Querschnitt etwa einem Kreisflächensegment mit mehr als 180 Umfangsgrad entspricht, so daß der Schalleintrittsschlitz 2 in einen sich erweiternden Nutinnenraum 3 übergeht. Durch die Schallwellen symbolisierende Linien 4 wird verdeutlicht, daß sich ein Teil der Schallwellen durch mehrfaches Auftreffen an der Nutinnenwandung "totläuft".Figure 1 shows a detail of the corner area of the front view of a plate-shaped soundproofing component with an outwardly
Figur 2 zeigt für den Nutquerschnitt eine abgewandelte Ausführungsform. Die Nutinnenkontur ist etwa W-förmig gestaltet und setzt sich aus nach außen und innen gewölbten Nutwandungen 5, 6 zusammen.Figure 2 shows a modified embodiment for the groove cross section. The groove inner contour is approximately W-shaped and is composed of
Bei ständig gleichbleibender Frequenz einer Schallquelle können zur Optimierung der Schalldämmung Durchmesser und/oder Umfangsgrade der Nuten der zu dämmenden Schallfrequenz angepaßt werden.If the frequency of a sound source remains constant, the diameter and / or circumferential degrees of the grooves can be adapted to the sound frequency to be insulated in order to optimize the sound insulation.
Figur 3 zeigt ein plattenförmig ausgebildetes Schalldämmbauteil mit sich gegenüberliegenden, um jeweils eine halbe Nutteilung gegeneinander versetzt angeordneten Nuten (1). Derartige Bauteile lassen sich z. B. als Trittschallplatten einsetzen, wobei sich dann zwischen einer nicht dargestellten Abdeckplatte und dem erfindungsgemäßen Bauteil nur punktuelle bzw. linienförmige Belastungen ergeben. Durch die versetzte Nutanordnung liegen die zweckmäßigerweise jeweils wulstartig ausgebildeten, die Nuten 1 voneinander trennenden Stege 7 jeweils einer Nut 1 gegenüber. Hierdurch wird die Festigkeit des Bauteils erhöht.FIG. 3 shows a plate-shaped soundproofing component with mutually opposite grooves (1) which are offset by half a groove pitch. Such components can, for. B. use as impact sound plates, which then only result in punctiform or linear loads between a cover plate, not shown, and the component according to the invention. Due to the offset groove arrangement, the appropriately bead-shaped
Figur 4 läßt erkennen, daß das Schalldämmbauteil auch rohrförmig ausgebildet sein kann. Auch bei dieser Ausbildung wären beidseitig angeordnete, sich jeweils gegenüberliegende und um eine halbe Nutteilung gegeneinander versetzt angeordnete Nuten möglich, wobei dann die innenliegenden Nuten 1 in Verbindung mit den sie trennenden Stegen 7 eine zusätzliche Isolierung des Rohres 8 bewirken würden.Figure 4 shows that the soundproofing component can also be tubular. Also in this embodiment, mutually opposed and mutually offset grooves offset by half a groove pitch would be possible, in which case the
Die in den Figuren 1 bis 4 dargestellten Schalldämmbauteile können aus Papierschaum oder Papierfluff bestehen, der sich vorzugsweise aus Papier und/oder Pappe, Stärke und Polyvinylalkohol (PVA) zusammensetzt. Derartige Bauteile können gepreßt oder aber auch extrudiert werden, wobei der wasserlösliche, als Granulat oder Dispersion zugegebene PVA als Weichmacher dient, der dem Papierschaum bzw. Papierfluff eine höhere Flexibilität verleiht. Dem Material können noch entzündungshemmende Zusätze, Farbstoffe o. dergl. zugegeben werden.The soundproofing components shown in FIGS. 1 to 4 can consist of paper foam or paper fluff, which is preferably composed of paper and / or cardboard, starch and polyvinyl alcohol (PVA). Such components can be pressed or they can also be extruded, the water-soluble PVA added as granules or dispersion serving as a plasticizer, which gives the paper foam or paper fluff greater flexibility. Anti-inflammatory additives, dyes or the like can also be added to the material.
Es ist aber auch möglich, die die Nuten 1 bildende Oberfläche durch eine entsprechend verformte Abdeckfolie 9 zu bilden, die auf einem Trägermaterial 10 festgelegt ist, das aus Papierschaum oder -fluff besteht. Die Abdeckfolie 9 ist vorzugsweise schalldurchlässig ausgebildet und kann z. B. ein Lochblech oder Drahtgewebe sein.However, it is also possible to form the surface forming the
Zwischen der Abdeckfolie 9 und dem Trägermaterial 10 kann insbesondere zur Feuchtigkeitaufnahme ein Fließstoff vorgesehen werden.A non-woven fabric can be provided between the
Zur Vergrößerung der Schalldämmwirkung kann eine Ausführungsform gemäß Figur 5 vorgesehen werden, bei der das Trägermaterial 10 auf seiner der Abdeckfolie 9 zugewandten Oberfläche ebenfalls parallel zueinander verlaufende Nuten 1 aufweist, die in ihrem Querschnitt ähnlich dem der Abdeckfoliennuten ausgebildet sind, aber quer zu diesen verlaufen. Das Trägermaterial 10 besteht dann aus einem Körper z. B. gemäß Figur 1 oder 2. Auftreffende Schallwellen, die aufgrund ihrer Intensität noch durch die Abdeckfolie 9 hindurchdringen, werden anschließend erneut mehrfach gebrochen, absorbiert und nahezu vollständig gedämmt. Eine solche Dämmplattenkonstruktion wird zweckmäßigerweise durch eine biegesteife Rückwand, aus Holz, Blech o. dgl. abgestützt und mittels eines nicht dargestellten Rahmens gefaßt.To increase the sound insulation effect, an embodiment according to FIG. 5 can be provided, in which the
Claims (15)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4008861 | 1990-03-20 | ||
| DE4008861A DE4008861A1 (en) | 1990-03-20 | 1990-03-20 | SOUND INSULATION COMPONENT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0447797A2 true EP0447797A2 (en) | 1991-09-25 |
| EP0447797A3 EP0447797A3 (en) | 1992-10-21 |
| EP0447797B1 EP0447797B1 (en) | 1995-01-18 |
Family
ID=6402603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91102075A Expired - Lifetime EP0447797B1 (en) | 1990-03-20 | 1991-02-14 | Sound damping element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0447797B1 (en) |
| DE (2) | DE4008861A1 (en) |
| ES (1) | ES2067063T3 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0615900A1 (en) * | 1991-06-18 | 1994-09-21 | Raytheon Company | Sonar baffles |
| USRE39339E1 (en) * | 1992-08-11 | 2006-10-17 | E. Khashoggi Industries, Llc | Compositions for manufacturing fiber-reinforced, starch-bound articles having a foamed cellular matrix |
| WO2010089351A1 (en) * | 2009-02-06 | 2010-08-12 | Loughborough University | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| WO2013184370A3 (en) * | 2012-06-04 | 2014-03-13 | 3M Innovative Properties Company | Sound absorbing (acoustic) board |
| US9607600B2 (en) | 2009-02-06 | 2017-03-28 | Sonobex Limited | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| CN114541618A (en) * | 2022-04-01 | 2022-05-27 | 国网河南省电力公司电力科学研究院 | Sound barrier system for reducing electric field distortion and sound environment improvement method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508072A (en) | 1992-08-11 | 1996-04-16 | E. Khashoggi Industries | Sheets having a highly inorganically filled organic polymer matrix |
| US5660903A (en) | 1992-08-11 | 1997-08-26 | E. Khashoggi Industries | Sheets having a highly inorganically filled organic polymer matrix |
| DE10055521A1 (en) * | 2000-11-09 | 2002-06-06 | Kaefer Isoliertechnik | Interior insulation system, with at least one layer of insulating material for insulation of two wall surfaces, comprises spring elements which acoustically decouple the two wall surfaces |
| DE102005030711A1 (en) * | 2005-06-29 | 2007-01-04 | Frormann, Lars, Prof. Dr.-Ing. | Method for producing sandwich structured layers especially paper products by extruding core layer into profiled rollers and with extruded coating layers |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1483366A (en) * | 1922-10-09 | 1924-02-12 | Mazer Jacob | Sound-absorbing method and material |
| BE488420A (en) * | 1949-04-12 | |||
| FR2336246A2 (en) * | 1975-02-05 | 1977-07-22 | Roth Sa Freres | MANUFACTURING PROCESS OF SHAPED PANELS BASED ON CARDBOARD AND FOAM, AND PANELS THUS REALIZED |
| DE2834683C2 (en) * | 1978-08-08 | 1980-07-24 | Optac Wilfrid Weltin, 6074 Roedermark | Sound absorber |
| US4300978A (en) * | 1979-07-06 | 1981-11-17 | Rohr Industries, Inc. | Bonding tool for venting honeycomb noise attenuation structure during manufacture |
| FR2469851A1 (en) * | 1979-11-12 | 1981-05-22 | Siare | Loudspeaker enclosure with straight cavities - which are situated in walls communicating through parallel grooves with interior of enclosure |
| DE3242940A1 (en) * | 1982-11-20 | 1984-05-24 | Hans Julius 6303 Hungen Schmitt | ACOUSTICALLY EFFECTIVE COMPONENT |
| DE3322204A1 (en) * | 1983-06-21 | 1985-01-03 | G + H Montage Gmbh, 6700 Ludwigshafen | Sound absorber for gaseous media |
| GB8817669D0 (en) * | 1988-07-25 | 1988-09-01 | Short Brothers Ltd | Means for attenuating sound energy |
-
1990
- 1990-03-20 DE DE4008861A patent/DE4008861A1/en active Granted
-
1991
- 1991-02-14 DE DE59104281T patent/DE59104281D1/en not_active Expired - Fee Related
- 1991-02-14 ES ES91102075T patent/ES2067063T3/en not_active Expired - Lifetime
- 1991-02-14 EP EP91102075A patent/EP0447797B1/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0615900A1 (en) * | 1991-06-18 | 1994-09-21 | Raytheon Company | Sonar baffles |
| USRE39339E1 (en) * | 1992-08-11 | 2006-10-17 | E. Khashoggi Industries, Llc | Compositions for manufacturing fiber-reinforced, starch-bound articles having a foamed cellular matrix |
| WO2010089351A1 (en) * | 2009-02-06 | 2010-08-12 | Loughborough University | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| US8789652B2 (en) | 2009-02-06 | 2014-07-29 | Sonobex Limited | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| EP3139373A1 (en) * | 2009-02-06 | 2017-03-08 | Sonobex Limited | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| US9607600B2 (en) | 2009-02-06 | 2017-03-28 | Sonobex Limited | Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers |
| WO2013184370A3 (en) * | 2012-06-04 | 2014-03-13 | 3M Innovative Properties Company | Sound absorbing (acoustic) board |
| CN114541618A (en) * | 2022-04-01 | 2022-05-27 | 国网河南省电力公司电力科学研究院 | Sound barrier system for reducing electric field distortion and sound environment improvement method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59104281D1 (en) | 1995-03-02 |
| DE4008861A1 (en) | 1991-10-02 |
| DE4008861C2 (en) | 1993-02-18 |
| EP0447797B1 (en) | 1995-01-18 |
| EP0447797A3 (en) | 1992-10-21 |
| ES2067063T3 (en) | 1995-03-16 |
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