EP2463451A1 - Sound insulation element, sound insulation wall, window shutter and method for producing a sound insulation element - Google Patents
Sound insulation element, sound insulation wall, window shutter and method for producing a sound insulation element Download PDFInfo
- Publication number
- EP2463451A1 EP2463451A1 EP11009664A EP11009664A EP2463451A1 EP 2463451 A1 EP2463451 A1 EP 2463451A1 EP 11009664 A EP11009664 A EP 11009664A EP 11009664 A EP11009664 A EP 11009664A EP 2463451 A1 EP2463451 A1 EP 2463451A1
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- EP
- European Patent Office
- Prior art keywords
- layer
- soundproofing element
- material mixture
- binder
- mold carrier
- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000009413 insulation Methods 0.000 title description 4
- 239000011230 binding agent Substances 0.000 claims abstract description 66
- 239000008187 granular material Substances 0.000 claims abstract description 28
- 229920001971 elastomer Polymers 0.000 claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
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- 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
- E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate 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
Definitions
- the present invention is based on a soundproofing element comprising a layer structure comprising at least a first and a second layer.
- Such soundproofing elements are well known and are commonly used in soundproof walls extending along traffic routes such as roads, railroad tracks and aircraft runways.
- Such a soundproofing element is further from the document DE 19539309 A1 known, which has a multilayer structure.
- a soundproofing element comprising a layer structure of at least a first and a second layer, wherein both the first layer and the second layer comprises a binder-bound rubber granules and further wherein a first binder content in the first layer is not equal to a second binder content in the second layer is.
- the soundproofing element according to the invention has the advantage over the prior art that two different layers are used, which have a different binder content. It has been found that this significantly improves the sound absorption. In particular, the sound reflection behavior, the sound absorption behavior and the frequency behavior of both layers is thus different, whereby the sound propagation in the soundproofing element is strongly attenuated.
- the soundproofing element according to the invention has the advantage that, on the one hand, a multilayer construction is used for optimizing the sound absorption properties and, on the other hand, a comparatively cost-effective production process is ensured by the use of binder-bound rubber granulate in both layers. In particular, the multilayer structure is achieved solely by the use of different binder proportions, whereby a cost-effective production of the soundproofing element is ensured.
- a development of the present invention relates to a soundproofing element, wherein a first density of the first layer is not equal to a second density of the second layer.
- the strength / weight volume of the first layer and the second layer is different.
- this in turn combines the advantages of comparatively good sound absorption (and the avoidance of sound reflection) by the multilayer structure with the advantages of relatively inexpensive manufacturing process through the use of binder-bound rubber granulate with different densities in the different layers.
- the multilayer structure is achieved here by the two different binder proportions in the first and second layers and by the different densities in the first and second layers. In this case, it is provided in particular that the different densities are produced by the use of the different binder fractions using a single pressing pressure, i.
- the different densities are generated by the use of different pressing pressures in the manufacture of the soundproofing element in a single pressing process, ie it is first the material of that layer which has a higher density or after completion should have in a mold carrier is filled and subjected to a first (higher) pressing pressure, and then the material of that layer, which has a lower density or should have after completion, filled in the mold carrier and subjected to a second (lower) pressing pressure.
- the term bulk density encompasses, in particular, the density based on the volume, including the pore spaces (also referred to as the apparent or geometric density of a porous solid).
- the binder preferably comprises polyurethane and more preferably isocyanate.
- binder content in the context of the present invention refers to the proportion of the binder in percent by weight of the total weight of the rubber granulate material of the respective layer.
- a soundproofing element comprising a layer structure of at least a first and a second layer, wherein both the first layer and the second layer comprises a binder-bound rubber granulate and wherein a first bulk density of first layer is not equal to a second bulk density of the second layer.
- this in turn combines the advantages of comparatively good sound absorption by the multi-layered construction with the advantages of the comparatively cost-effective production process through the use of binder-bound rubber granules.
- the multilayer structure is not necessarily achieved here by two different binder proportions in the first and second layers, but by different densities in the first and second layers.
- the different densities are produced by the use of different pressing pressures in the manufacture of the soundproofing element in a pressing process.
- the term bulk density encompasses, in particular, the density based on the volume, including the pore spaces (also referred to as the apparent or geometric density of a porous solid).
- the binder preferably comprises polyurethane and more preferably isocyanate.
- binder content in the context of the present invention refers to the proportion of the binder in percent by weight of the total weight of the GUmmigranulatmaterials the respective layer.
- the first layer has a bulk density (first apparent density) of (greater than or equal to) 0.5 g / cm 3 to (less than or equal to) 0.9 g / cm 3 , particularly preferably of ( greater than or equal to) 0.6 g / cm 3 to (less than or equal to) 0.8 g / cm 3 , most preferably from (greater than or equal to) 0.65 g / cm 3 to (less than or equal to) 0.75 g / cm 3 .
- first apparent density of (greater than or equal to) 0.5 g / cm 3 to (less than or equal to) 0.9 g / cm 3 , particularly preferably of ( greater than or equal to) 0.6 g / cm 3 to (less than or equal to) 0.8 g / cm 3 , most preferably from (greater than or equal to) 0.65 g / cm 3 to (less than or equal to) 0.75 g / cm 3 .
- the second layer has a bulk density (second bulk density) of (greater than or equal to) 1.0 g / cm 3 to (less than or equal to) 1.5 g / cm 3 , more preferably from (greater than or equal to) 1.1 g / cm 3 to (less than or equal to) 1.4 g / cm 3.
- the first layer has a binder content (first binder content) of (greater than or equal to) 5 wt .-% to (less than or equal to) 9 wt .-%, particularly preferably of (greater or equal ) 7% by weight to (less than or equal to) 8% by weight.
- the second layer has a binder fraction (second binder fraction) of (greater than or equal to) 10% by weight to (less than or equal to) 20% by weight, particularly preferably of (greater than or equal to) 15% by weight to (less than or equal to) 18% by weight.
- the first and the second layer have substantially the same mean grain sizes of the rubber granulate and / or that the first and / or the second layer have air inclusions.
- the use of the same rubber granulate in the first and the second layer allows a particularly cost-effective production of the soundproofing element, since no different rubber granules are necessary. Nevertheless, a multi-layer structure of the soundproofing element is possible by using the different binder proportions and / or the different densities.
- the air inclusions in the first and / or second layer are preferably provided to increase the absorption properties.
- the soundproofing element is produced in a single production step and in particular in a single pressing operation.
- a particularly cost-effective production of the multilayer soundproofing element is possible.
- no separate pressing operations are required in contrast to the prior art, so that on the one hand the fastest possible production is ensured in a single pressing operation and on the other hand, a maximum cohesive connection between the first and the second layer is ensured.
- the stability of the soundproofing element is considerably increased and the risk that the first and the second layer separate from each other, significantly reduced.
- the soundproofing element has a further first layer and / or a further second layer, the further first layer preferably between the second and the further second layer and / or the further second layer preferably between the first and the further first layer is arranged.
- the soundproofing element has a further first layer and / or a further second layer, the further first layer preferably between the second and the further second layer and / or the further second layer preferably between the first and the further first layer is arranged.
- the layer structure of the first layer, the second layer, the further first layer and / or the further second layer is produced in a single production step and in particular in a single pressing operation. It is conceivable that further first and / or further layers are contained in the soundproofing element.
- the soundproofing element has a reinforcing structure, which preferably comprise steel elements.
- a bending of the soundproofing element is thus effectively prevented by the particularly rigid reinforcing structure is integrated into the soundproofing element.
- the reinforcing structure comprises steel tubes which extend through the soundproofing element parallel to a main extension plane of the soundproofing element.
- the soundproofing element has a honeycomb structure on at least one side. It has been shown that by using a honeycomb structure, the sound absorption capacity of the soundproofing element can be further increased.
- the soundproofing element preferably has a groove or spring unit on one of its ends, via which it is to be connected to further soundproofing elements to a soundproof wall.
- adjacent protective elements engage in one another in the manner of a tongue and groove connection.
- the size of the soundproof wall is thus modularly adaptable.
- the soundproof wall preferably has a plurality of soundproofing elements according to the invention, which are connected to one another by tongue and groove connections and / or which have reinforcing structures.
- Another object of the present invention is a shutter, which has at least one inventive soundproofing element.
- sound absorption is achieved by the soundproofing element when closing the shutter, so that, for example, a located behind the shutter residents of a dwelling is not disturbed by street noise or the like.
- the comparatively light construction the soundproofing element according to the invention in this case allows a simple closing or opening of the shutter.
- Another object of the present invention is a process for producing a soundproofing element according to the invention, wherein in a first process step, a first material mixture of rubber granules and binder for forming the first layer is introduced into a mold carrier and wherein in a subsequent second process step, a second material mixture of rubber granulate and Binder for forming the second layer is introduced into the mold carrier and wherein a first binder content in the first material mixture is not equal to a second binder content in the second material mixture and / or a first density of the first material mixture is not equal to a second density of the second material mixture and wherein in one third method step, the first and the second layer are pressed together.
- the soundproofing element according to the invention is thus produced in a single production process, in particular in a single pressing process, by introducing both the first material mixture and the second material mixture successively into the mold carrier and then pressing them together.
- the production costs for such a soundproofing element are comparatively low.
- the pressing operation is preferably carried out with the application of heat, so that the first and the second layer are cured during the pressing operation.
- a fourth method step is carried out, in which the first material mixture is introduced into the mold carrier for forming a further first layer and / or that in one between the fourth and the third Process step performed fifth process step, the second material mixture is introduced to form a further second layer in the mold carrier, wherein in the subsequent third process step, the first, the second, the further first and / or the further second layer are pressed together.
- a multilayer soundproofing element is constructed, wherein a plurality of layers in the mold carrier from the first material mixture and from the second material mixture are constructed successively and then pressed together. The sound absorption capacity increases with the number of layers used, without the production costs thereby significantly increase significantly.
- Another object of the present invention is a process for producing a soundproofing element, wherein in a first process step, a first material mixture of rubber granules and binder for forming the first layer is introduced and pressed in a mold carrier and that in a subsequent second process step, a second material mixture of rubber granules and binder for forming the second layer is introduced and pressed into the mold carrier, wherein a first binder content in the first material mixture is not equal to a second binder content in the second material mixture and / or a first bulk density of the first material mixture is not equal to a second bulk density of the second material mixture.
- a multilayer construction of a soundproofing element is achieved in a particularly advantageous manner.
- the first material mixture essentially corresponds to the second material mixture, wherein in the first method step a different pressing pressure than in the second method step is used, so that the bulk density of the first layer is not equal to the apparent density in the second layer.
- the pressing process is preferably carried out with the application of heat, so that the first and the second layer are cured during the pressing operation.
- the first material mixture in a third method step, is introduced and pressed to form a further first layer in the mold carrier and / or that introduced in a fourth process step, the second material mixture to form a further second layer in the mold carrier and is pressed.
- the production of further layers is possible, with only further filling and pressing operations are carried out.
- a cohesive connection between adjacent layers is achieved by the binder.
- FIG. 1 1 is a schematic sectional view of a soundproofing element 1 according to an exemplary embodiment of the present invention.
- the soundproofing element 1 has a layer structure 2 of a plurality of layers.
- the layer structure 2 comprises a first layer 3, a second layer 4, a further first layer 3 'and a further second layer 4'.
- the first layer 3, the second layer 4, the further first layer 3 'and the further second layer 4' each have a binder-bound rubber granulate, wherein the granule size in all four layers is substantially equal or unequal.
- the first layer 3 and the further first layer 3 ' have a first binder content which is lower than in the case of the second layer 4 and the further second layer 4'. This is due to different hatching in FIG. 1 schematically illustrated.
- the sound absorption properties of the soundproofing element 1 are optimized. Due to the different binder proportions between the first layer 3 and the second layer 4, the bulk densities between the first layer 3 and the second layer 4 are different. In particular, a first bulk density of the first layer 3 is smaller than a second raw density of the second layer 4. The bulk density between the first layer 3 and the further first layer 3 'are identical, as are the binder fractions. Likewise, the binder contents or the bulk densities between the second layer 4 and the further second layer 4 'are identical.
- the layer structure 2 of the soundproofing element 1 is configured, for example, such that half the total material thickness of the soundproofing element 1 comprises the first layer 3 while the second half of the total material thickness of the soundproofing element 1 by the same proportions of the second layer 4, the further first layer 3 'and the further second layer 4 'are formed.
- the second layer 4 is arranged between the first layer 3 and the further first layer 3 ', while the further first layer 3' is arranged between the second layer 4 and the further second layer 4 '. It has been shown that this layer structure ensures a comparatively good sound absorption.
- the binder preferably comprises polyurethane and more preferably isocyanate.
- An alternative second production method provides that in a first step, the first material mixture of rubber granulate and binder for forming the first layer 3 is introduced into the mold carrier and then pressed. In a second step, a second material mixture of rubber granulate and binder to form the second layer 4 is introduced into the mold carrier and also pressed immediately. Subsequently, in turn, the first material mixture is introduced into the mold carrier and pressed to build the further first layer 3 '. In a final step, in turn, the second material mixture is introduced into the mold carrier and pressed to form the further second layer 4 '. The first material mixture and the second material mixture in this case, as well as in the previous first manufacturing process to a different binder content.
- the third manufacturing method is performed similarly to the second manufacturing method, wherein the first material mixture and the second material mixture comprise identical material mixtures with equal binder proportions.
- the material mixture is introduced into the mold carrier and pressed to form the first material layer 3.
- the same material mixture is introduced again into the mold carrier and this time pressed with a different pressure to form the second layer 4.
- the same material mixture is again introduced into the mold carrier and pressed with a further pressure to form the further first layer 3 '.
- the same material mixture once again introduced into the mold carrier and pressed with a fourth pressure to form the further second layer 4 '.
- FIG. 2 a soundproofing wall 8 comprising a soundproofing element 1 according to an exemplary embodiment of the present invention is shown.
- the soundproofing element 1 is preferably like that in FIG FIG. 1 constructed soundproofing element 1 constructed.
- the soundproof wall 8 is preferably used for sound insulation on busy roads, at railway tracks and / or at airports.
- the soundproofing wall 8 has reinforcing structures 5 in the form of steel pipes, which are integrated into the soundproofing wall 8 and extend along a main extension plane of the soundproofing wall 8.
- the reinforcing structures 5 steel mesh, wires; Wire mesh and / or the like include.
- the soundproof wall 8 has on one side a honeycomb structure 6 for improving the sound absorption properties.
- the soundproof wall preferably has a smooth surface. It is conceivable to provide the soundproof wall with different surfaces or structures.
- the soundproof wall 8 is provided at its ends with tongue and groove connecting elements 7, by which adjacent soundproof walls 8 are to be connected to each other modular (not shown).
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- Acoustics & Sound (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
Description
Die vorliegende Erfindung geht aus von einem Schallschutzelement, umfassend einen Schichtaufbau aus wenigstens einer ersten und einer zweiten Schicht.The present invention is based on a soundproofing element comprising a layer structure comprising at least a first and a second layer.
Solche Schallschutzelemente sind allgemein bekannt und werden üblicherweise in Schallschutzwänden verwendet, welche sich entlang von Verkehrswegen, wie beispielsweise Straßen, Gleisen und Start- bzw. Landebahnen für Flugzeuge erstrecken.Such soundproofing elements are well known and are commonly used in soundproof walls extending along traffic routes such as roads, railroad tracks and aircraft runways.
Ein solches Schallschutzelement ist ferner aus der Druckschrift
Es war die Aufgabe der vorliegenden Erfindung ein Schallschutzelement bereit zu stellen, welches im Vergleich zum Stand der Technik ein verbessertes Schallabsorptionsverhalten aufweist und gleichzeitig eine kostengünstigere Herstellung ermöglicht.It was the object of the present invention to provide a soundproofing element which, compared to the prior art, has an improved sound absorption behavior and at the same time enables a more cost-effective production.
Gelöst wird die Aufgabe mit einem Schallschutzelement, umfassend einen Schichtaufbau aus wenigstens einer ersten und einer zweiten Schicht, wobei sowohl die erste Schicht als auch die zweite Schicht ein bindemittelgebundenes Gummigranulat umfasst und wobei ferner ein erster Bindemittelanteil in der ersten Schicht ungleich einem zweiten Bindemittelanteil in der zweiten Schicht ist.The object is achieved with a soundproofing element, comprising a layer structure of at least a first and a second layer, wherein both the first layer and the second layer comprises a binder-bound rubber granules and further wherein a first binder content in the first layer is not equal to a second binder content in the second layer is.
Das erfindungsgemäße Schallschutzelement hat gegenüber dem Stand der Technik den Vorteil, dass zwei unterschiedliche Schichten verwendet werden, welche einen unterschiedlichen Bindemittelanteil aufweisen. Es hat sich gezeigt, dass hierdurch die Schallabsorption in erheblichem Maße verbessert wird. Insbesondere ist das Schallreflexionsverhalten, das Schallabsorptionsverhalten und das Frequenzverhalten beider Schichten somit unterschiedlich, wodurch die Schallausbreitung im Schallschutzelement stark gedämpft wird. Man spricht in diesem Zusammenhang auch von einem Schallschlucken, welches durch innere und/oder äußere Reibung im Material des Schallschutzelements erfolgt. Das erfindungsgemäße Schallschutzelement hat den Vorteil, dass einerseits ein mehrschichtiger Aufbau zur Optimierung der Schallabsorptionseigenschaften verwendet wird und dass andererseits ein vergleichsweise kostengünstiger Herstellungsprozess durch die Verwendung von bindemittelgebundenen Gummigranulat in beiden Schichten gewährleistet wird. Insbesondere wird der mehrschichtige Aufbau allein durch die Verwendung verschiedener Bindemittelanteile erzielt, wodurch eine kostengünstige Herstellung des Schallschutzelements sichergestellt wird.The soundproofing element according to the invention has the advantage over the prior art that two different layers are used, which have a different binder content. It has been found that this significantly improves the sound absorption. In particular, the sound reflection behavior, the sound absorption behavior and the frequency behavior of both layers is thus different, whereby the sound propagation in the soundproofing element is strongly attenuated. One speaks in this context of a sound swallowing, which takes place by internal and / or external friction in the material of the soundproofing element. The soundproofing element according to the invention has the advantage that, on the one hand, a multilayer construction is used for optimizing the sound absorption properties and, on the other hand, a comparatively cost-effective production process is ensured by the use of binder-bound rubber granulate in both layers. In particular, the multilayer structure is achieved solely by the use of different binder proportions, whereby a cost-effective production of the soundproofing element is ensured.
Eine Weiterbildung der vorliegenden Erfindung betrifft ein Schallschutzelement, wobei eine erste Rohdichte der ersten Schicht ungleich einer zweiten Rohdichte der zweiten Schicht ist. Alternativ ist die Festigkeit / Gewichtsvolumen der ersten Schicht und der zweiten Schicht unterschiedlich. In vorteilhafter Weise werden hierdurch wiederum die Vorteile der vergleichsweise guten Schallabsorption (und der Vermeidung der Schallreflexion) durch den mehrschichtigen Aufbau mit den Vorteilen des vergleichsweise kostengünstigen Herstellungsprozesses durch die Verwendung von bindemittelgebundenen Gummigranulat mit unterschiedlichen Rohdichten in den verschiedenen Schichten vereint. Der mehrschichtige Aufbau wird hier durch die zwei verschiedenen Bindemittelanteile in der ersten und zweiten Schicht und durch die unterschiedlichen Rohdichten in der ersten und zweiten Schicht erzielt. Hierbei ist es insbesondere vorgesehen, dass die unterschiedlichen Rohdichten durch die Verwendung der unterschiedlichen Bindemittelanteile bei Anwendung eines einzigen Pressdruck erzeugt werden, d.h. es wird zunächst das Material derjenigen Schicht, die eine höhere Rohdichte aufweist bzw. nach der Fertigstellung aufweisen soll (d.h. einen höheren Bindemittelanteil aufweist), in einen Formträger eingefüllt, und es wird anschließend das Material derjenigen Schicht, die eine niedrigere Rohdichte aufweist bzw. nach der Fertigstellung aufweisen soll (d.h. einen niedrigeren Bindemittelanteil aufweist), in den Formträger eingefüllt und einem gemeinsamen Pressdruck unterworfen.A development of the present invention relates to a soundproofing element, wherein a first density of the first layer is not equal to a second density of the second layer. Alternatively, the strength / weight volume of the first layer and the second layer is different. Advantageously, this in turn combines the advantages of comparatively good sound absorption (and the avoidance of sound reflection) by the multilayer structure with the advantages of relatively inexpensive manufacturing process through the use of binder-bound rubber granulate with different densities in the different layers. The multilayer structure is achieved here by the two different binder proportions in the first and second layers and by the different densities in the first and second layers. In this case, it is provided in particular that the different densities are produced by the use of the different binder fractions using a single pressing pressure, i. It is first the material of that layer which has a higher apparent density or should have after completion (ie, a higher binder content), filled in a mold carrier, and it is then the material of that layer having a lower density or after the completion is to have (ie, a lower binder content), filled in the mold carrier and subjected to a common pressing pressure.
Alternativ kann es vorgesehen sein, dass die unterschiedlichen Rohdichten durch die Verwendung von unterschiedlichen Pressdrücken beim Herstellen des Schallschutzelements in einem einzigen Pressverfahren erzeugt werden, d.h. es wird zunächst das Material derjenigen Schicht, die eine höhere Rohdichte aufweist bzw. nach der Fertigstellung aufweisen soll, in einen Formträger eingefüllt und einem ersten (höheren) Pressdruck unterworfen, und es wird anschließend das Material derjenigen Schicht, die eine niedrigere Rohdichte aufweist bzw. nach der Fertigstellung aufweisen soll, in den Formträger eingefüllt und einem zweiten (niedrigeren) Pressdruck unterworfen.Alternatively, it can be provided that the different densities are generated by the use of different pressing pressures in the manufacture of the soundproofing element in a single pressing process, ie it is first the material of that layer which has a higher density or after completion should have in a mold carrier is filled and subjected to a first (higher) pressing pressure, and then the material of that layer, which has a lower density or should have after completion, filled in the mold carrier and subjected to a second (lower) pressing pressure.
Der Begriff Rohdichte umfasst im Sinne der vorliegenden Erfindung insbesondere die Dichte basierend auf dem Volumen einschließlich der Porenräume (auch als scheinbare oder geometrische Dichte eines porösen Festkörpers bezeichnet). Das Bindemittel umfasst bevorzugt Polyurethan und besonders bevorzugt Isocyanat. Der Begriff Bindemittelanteil im Sinne der vorliegenden Erfindung bezieht sich auf den Anteil des Bindemittels in Gewichtsprozent am Gesamtgewicht des Gummigranulatmaterials der jeweiligen Schicht.For the purposes of the present invention, the term bulk density encompasses, in particular, the density based on the volume, including the pore spaces (also referred to as the apparent or geometric density of a porous solid). The binder preferably comprises polyurethane and more preferably isocyanate. The term binder content in the context of the present invention refers to the proportion of the binder in percent by weight of the total weight of the rubber granulate material of the respective layer.
Ein weiterer Gegenstand der vorliegenden Erfindung und/oder eine Weiterbildung der vorliegenden Erfindung ist ein Schallschutzelement, umfassend einen Schichtaufbau aus wenigstens einer ersten und einer zweiten Schicht, wobei sowohl die erste Schicht als auch die zweite Schicht ein bindemittelgebundenes Gummigranulat umfasst und wobei eine erste Rohdichte der ersten Schicht ungleich einer zweiten Rohdichte der zweiten Schicht ist. In vorteilhafter Weise werden hierdurch wiederum die Vorteile der vergleichsweise guten Schallabsorption durch den mehrschichtigen Aufbau mit den Vorteilen des vergleichsweise kostengünstigen Herstellungsprozesses durch die Verwendung von bindemittelgebundenen Gummigranulat vereint. Der mehrschichtige Aufbau wird hier nicht zwangsläufig durch zwei verschiedene Bindemittelanteile in der ersten und zweiten Schicht erzielt, sondern durch unterschiedliche Rohdichten in der ersten und zweiten Schicht. Denkbar ist beispielsweise, dass die unterschiedlichen Rohdichten durch die Verwendung von unterschiedlichen Pressdrücken beim Herstellen des Schallschutzelements in einem Pressverfahren erzeugt werden. Der Begriff Rohdichte umfasst im Sinne der vorliegenden Erfindung insbesondere die Dichte basierend auf dem Volumen einschließlich der Porenräume (auch als scheinbare oder geometrische Dichte eines porösen Festkörpers bezeichnet). Das Bindemittel umfasst bevorzugt Polyurethan und besonders bevorzugt Isocyanat. Der Begriff Bindemittelanteil im Sinne der vorliegenden Erfindung bezieht sich auf den Anteil des Bindemittels in Gewichtsprozent am Gesamtgewicht des GUmmigranulatmaterials der jeweiligen Schicht.Another object of the present invention and / or a development of the present invention is a soundproofing element comprising a layer structure of at least a first and a second layer, wherein both the first layer and the second layer comprises a binder-bound rubber granulate and wherein a first bulk density of first layer is not equal to a second bulk density of the second layer. Advantageously, this in turn combines the advantages of comparatively good sound absorption by the multi-layered construction with the advantages of the comparatively cost-effective production process through the use of binder-bound rubber granules. The multilayer structure is not necessarily achieved here by two different binder proportions in the first and second layers, but by different densities in the first and second layers. It is conceivable, for example, that the different densities are produced by the use of different pressing pressures in the manufacture of the soundproofing element in a pressing process. For the purposes of the present invention, the term bulk density encompasses, in particular, the density based on the volume, including the pore spaces (also referred to as the apparent or geometric density of a porous solid). The binder preferably comprises polyurethane and more preferably isocyanate. The term binder content in the context of the present invention refers to the proportion of the binder in percent by weight of the total weight of the GUmmigranulatmaterials the respective layer.
Gemäß der vorliegenden Erfindung ist insbesondere vorgesehen, dass die erste Schicht eine Rohdichte (erste Rohdichte) aufweist von (größer oder gleich) 0,5 g/cm3 bis (kleiner oder gleich) 0,9 g/cm3, besonders bevorzugt von (größer oder gleich) 0,6 g/cm3 bis (kleiner oder gleich) 0,8 g/cm3, ganz besonders bevorzugt von (größer oder gleich) 0,65 g/cm3 bis (kleiner oder gleich) 0,75 g/cm3. Ferner ist es gemäß der vorliegenden Erfindung vorgesehen, dass die zweite Schicht eine Rohdichte (zweite Rohdichte) aufweist von (größer oder gleich) 1,0 g/cm3 bis (kleiner oder gleich) 1,5 g/cm3, besonders bevorzugt von (größer oder gleich) 1,1 g/cm3 bis (kleiner oder gleich) 1,4 g/cm3.According to the present invention, it is provided in particular that the first layer has a bulk density (first apparent density) of (greater than or equal to) 0.5 g / cm 3 to (less than or equal to) 0.9 g / cm 3 , particularly preferably of ( greater than or equal to) 0.6 g / cm 3 to (less than or equal to) 0.8 g / cm 3 , most preferably from (greater than or equal to) 0.65 g / cm 3 to (less than or equal to) 0.75 g / cm 3 . Further, according to the present invention, it is provided that the second layer has a bulk density (second bulk density) of (greater than or equal to) 1.0 g / cm 3 to (less than or equal to) 1.5 g / cm 3 , more preferably from (greater than or equal to) 1.1 g / cm 3 to (less than or equal to) 1.4 g / cm 3.
Ferner ist es gemäß der vorliegenden Erfindung vorgesehen, dass die erste Schicht einen Bindemittelanteil (erster Bindemittelanteil) aufweist von (größer oder gleich) 5 Gew.-% bis (kleiner oder gleich) 9 Gew.-%, besonders bevorzugt von (größer oder gleich) 7 Gew.-% bis (kleiner oder gleich) 8 Gew.-%. Ferner ist es gemäß der vorliegenden Erfindung vorgesehen, dass die zweite Schicht einen Bindemittelanteil (zweiter Bindemittelanteil) aufweist von (größer oder gleich) 10 Gew-% bis (kleiner oder gleich) 20 Gew.-%, besonders bevorzugt von (größer oder gleich) 15 Gew-% bis (kleiner oder gleich) 18 Gew.-%.Furthermore, it is provided according to the present invention that the first layer has a binder content (first binder content) of (greater than or equal to) 5 wt .-% to (less than or equal to) 9 wt .-%, particularly preferably of (greater or equal ) 7% by weight to (less than or equal to) 8% by weight. Furthermore, it is provided according to the present invention that the second layer has a binder fraction (second binder fraction) of (greater than or equal to) 10% by weight to (less than or equal to) 20% by weight, particularly preferably of (greater than or equal to) 15% by weight to (less than or equal to) 18% by weight.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindungen sind in UnteransprĂĽchen, sowie der Beschreibung unter Bezugnahme auf die Zeichnungen entnehmbar.Advantageous embodiments and further developments of the inventions can be found in subclaims, as well as the description with reference to the drawings.
Gemäß einer bevorzugten Weiterbildung ist vorgesehen, dass die erste und die zweite Schicht im Wesentlichen gleiche mittlere Korngrößen des Gummigranulats aufweisen und/oder dass die erste und/oder die zweite Schicht Lufteinschlüsse aufweisen. Die Verwendung des gleichen Gummigranulats in der ersten und der zweiten Schicht erlaubt eine besonders kostengünstige Herstellung des Schallschutzelements, da keine unterschiedlichen Gummigranulate notwendig sind. Trotzdem ist durch die Verwendung der unterschiedlichen Bindemittelanteile und/oder der unterschiedlichen Rohdichten ein mehrschichtiger Aufbau des Schallschutzelements möglich. Die Lufteinschlüsse in der ersten und/oder zweiten Schicht sind vorzugsweise zur Erhöhung der Absorptionseigenschaften vorgesehen.According to a preferred development, it is provided that the first and the second layer have substantially the same mean grain sizes of the rubber granulate and / or that the first and / or the second layer have air inclusions. The use of the same rubber granulate in the first and the second layer allows a particularly cost-effective production of the soundproofing element, since no different rubber granules are necessary. Nevertheless, a multi-layer structure of the soundproofing element is possible by using the different binder proportions and / or the different densities. The air inclusions in the first and / or second layer are preferably provided to increase the absorption properties.
Gemäß einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung ist vorgesehen, dass das Schallschutzelement in einem einzigen Herstellungsschritt und insbesondere in einem einzigen Pressvorgang hergestellt ist. Auf diese Weise ist eine besonders kostengünstige Herstellung des mehrschichtigen Schallschutzelements möglich. Insbesondere sind im Gegensatz zum Stand der Technik keine separaten Pressvorgänge erforderlich, so dass einerseits eine möglichst zügige Herstellung in einem einzigen Pressvorgang gewährleistet wird und andererseits eine maximale stoffschlüssige Anbindung zwischen der ersten und der zweiten Schicht sichergestellt wird. Hierdurch wird die Stabilität des Schallschutzelements erheblich erhöht und die Gefahr, dass sich die erste und die zweite Schicht voneinander lösen, deutlich reduziert.According to a further preferred embodiment of the present invention, it is provided that the soundproofing element is produced in a single production step and in particular in a single pressing operation. In this way, a particularly cost-effective production of the multilayer soundproofing element is possible. In particular, no separate pressing operations are required in contrast to the prior art, so that on the one hand the fastest possible production is ensured in a single pressing operation and on the other hand, a maximum cohesive connection between the first and the second layer is ensured. As a result, the stability of the soundproofing element is considerably increased and the risk that the first and the second layer separate from each other, significantly reduced.
Gemäß einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung ist vorgesehen, dass das Schallschutzelement eine weitere erste Schicht und/oder eine weitere zweite Schicht aufweist, wobei die weitere erste Schicht vorzugsweise zwischen der zweiten und der weiteren zweiten Schicht und/oder die weitere zweite Schicht vorzugsweise zwischen der ersten und der weiteren ersten Schicht angeordnet ist. Auf diese Weise wird ein mehrschichtiger Schichtaufbau erzielt, wobei die benachbarten Schichten jeweils unterschiedliche Bindemittelanteile und/oder unterschiedliche Rohdichten aufweisen. Die Schallabsorptionsfähigkeit des Schallschutzelements wird im Vergleich zum Stand der Technik erheblich gesteigert, wobei gleichzeitig die Herstellungskosten gleich bleiben und/oder sogar gesenkt werden. Insbesondere wird der Schichtaufbau aus der ersten Schicht, der zweiten Schicht, der weiteren ersten Schicht und/oder der weiteren zweiten Schicht in einem einzigen Herstellungsschritt und insbesondere in einem einzigen Pressvorgang hergestellt. Denkbar ist, dass weitere erste und/oder weitere Schichten im Schallschutzelement enthalten sind.According to a further preferred embodiment of the present invention, it is provided that the soundproofing element has a further first layer and / or a further second layer, the further first layer preferably between the second and the further second layer and / or the further second layer preferably between the first and the further first layer is arranged. In this way, a multi-layered Achieved layer structure, wherein the adjacent layers each have different binder proportions and / or different densities. The sound absorption capacity of the soundproofing element is considerably increased compared to the prior art, while at the same time the production costs remain the same and / or even lowered. In particular, the layer structure of the first layer, the second layer, the further first layer and / or the further second layer is produced in a single production step and in particular in a single pressing operation. It is conceivable that further first and / or further layers are contained in the soundproofing element.
Gemäß einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass das Schallschutzelement eine Verstärkungsstruktur aufweist, welche vorzugsweise Stahlelemente umfassen. In vorteilhafter Weise wird somit ein Verbiegen des Schallschutzelementes wirksam unterbunden, indem die insbesondere steife Verstärkungsstruktur in das Schallschutzelement integriert wird. Denkbar ist hierbei, dass die Verstärkungsstruktur Stahlrohre umfasst, welche sich parallel zu einer Haupterstreckungsebene des Schallschutzelements durch das Schallschutzelement hindurch erstrecken. Gemäß einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung ist ferner vorgesehen, dass das Schallschutzelement wenigstens auf einer Seite eine Wabenstruktur aufweist. Es hat sich gezeigt, dass durch die Verwendung einer Wabenstruktur die Schallabsorptionsfähigkeit des Schallschutzelements weiter gesteigert werden kann. Ferner ist vorgesehen, dass das Schallschutzelement vorzugsweise eine Nut- oder Federeinheit auf einer seiner Enden aufweist, über welche es mit weiteren Schallschutzelementen zu einer Schallschutzwand zu verbinden ist. Hierbei greifen benachbarte Schutzelemente nach Art einer Nut-Feder-Verbindung ineinander ein. Die Größe der Schallschutzwand ist somit modular anpassbar.According to a further preferred embodiment it is provided that the soundproofing element has a reinforcing structure, which preferably comprise steel elements. Advantageously, a bending of the soundproofing element is thus effectively prevented by the particularly rigid reinforcing structure is integrated into the soundproofing element. It is conceivable here that the reinforcing structure comprises steel tubes which extend through the soundproofing element parallel to a main extension plane of the soundproofing element. According to a further preferred embodiment of the present invention, it is further provided that the soundproofing element has a honeycomb structure on at least one side. It has been shown that by using a honeycomb structure, the sound absorption capacity of the soundproofing element can be further increased. It is further provided that the soundproofing element preferably has a groove or spring unit on one of its ends, via which it is to be connected to further soundproofing elements to a soundproof wall. In this case, adjacent protective elements engage in one another in the manner of a tongue and groove connection. The size of the soundproof wall is thus modularly adaptable.
Ein weiterer Gegenstand der vorliegenden Erfindung ist eine Schallschutzwand, welche wenigstens ein erfindungsgemäßes Schallschutzelement aufweist. Vorzugsweise weist die Schallschutzwand eine Mehrzahl von erfindungsgemäßen Schallschutzelementen auf, welche mittels Nut-Feder-Verbindungen miteinander verbunden sind und/oder welche Verstärkungsstrukturen aufweisen.Another object of the present invention is a soundproof wall, which has at least one inventive soundproofing element. The soundproof wall preferably has a plurality of soundproofing elements according to the invention, which are connected to one another by tongue and groove connections and / or which have reinforcing structures.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Fensterladen, welcher wenigstens ein erfindungsgemäßes Schallschutzelement aufweist. In vorteilhafter Weise wird beim Schließen des Fensterladens ein Schallabsorption durch das Schallschutzelement erzielt, so dass beispielsweise ein sich hinter dem Fensterladen befindlicher Bewohner einer Wohnung nicht durch Straßenlärm oder dergleichen gestört wird. Der vergleichsweise leichte Aufbau des erfindungsgemäßen Schallschutzelement erlaubt hierbei ein einfaches Schließen bzw. Öffnen des Fensterladens.Another object of the present invention is a shutter, which has at least one inventive soundproofing element. Advantageously, sound absorption is achieved by the soundproofing element when closing the shutter, so that, for example, a located behind the shutter residents of a dwelling is not disturbed by street noise or the like. The comparatively light construction the soundproofing element according to the invention in this case allows a simple closing or opening of the shutter.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines erfindungsgemäßen Schallschutzelements, wobei in einem ersten Verfahrensschritt eine erste Materialmischung aus Gummigranulat und Bindemittel zur Bildung der ersten Schicht in ein Formträger eingebracht wird und wobei in einem nachfolgenden zweiten Verfahrensschritt eine zweite Materialmischung aus Gummigranulat und Bindemittel zur Bildung der zweiten Schicht in den Formträger eingebracht wird und wobei ein erster Bindemittelanteil in der ersten Materialmischung ungleich einem zweiten Bindemittelanteil in der zweiten Materialmischung ist und/oder eine erste Rohdichte der ersten Materialmischung ungleich einer zweiten Rohdichte der zweiten Materialmischung ist und wobei in einem dritten Verfahrensschritt die erste und die zweite Schicht gemeinsam gepresst werden.Another object of the present invention is a process for producing a soundproofing element according to the invention, wherein in a first process step, a first material mixture of rubber granules and binder for forming the first layer is introduced into a mold carrier and wherein in a subsequent second process step, a second material mixture of rubber granulate and Binder for forming the second layer is introduced into the mold carrier and wherein a first binder content in the first material mixture is not equal to a second binder content in the second material mixture and / or a first density of the first material mixture is not equal to a second density of the second material mixture and wherein in one third method step, the first and the second layer are pressed together.
In vorteilhafter Weise wird somit das erfindungsgemäße Schallschutzelement in einem einzigen Herstellungsvorgang, insbesondere in einem einzigen Pressverfahren hergestellt, indem in den Formträger sowohl die erste Materialmischung als auch die zweite Materialmischung nacheinander eingebracht werden und dann gemeinsam miteinander gepresst werden. Die Herstellungskosten für ein solches Schallschutzelement sind vergleichsweise gering. Der Pressvorgang wird vorzugsweise unter Zuführung von Wärme durchgeführt, damit die erste und die zweite Schicht während des Pressvorgangs aushärten.Advantageously, the soundproofing element according to the invention is thus produced in a single production process, in particular in a single pressing process, by introducing both the first material mixture and the second material mixture successively into the mold carrier and then pressing them together. The production costs for such a soundproofing element are comparatively low. The pressing operation is preferably carried out with the application of heat, so that the first and the second layer are cured during the pressing operation.
Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass zwischen dem zweiten und dem dritten Verfahrensschritt, ein vierter Verfahrensschritt durchgeführt wird, in welchem die erste Materialmischung zur Bildung einer weiteren ersten Schicht in den Formträger eingebracht wird und/oder dass in einem zwischen dem vierten und dem dritten Verfahrensschritt durchgeführten fünften Verfahrensschritt, die zweite Materialmischung zur Bildung einer weiteren zweiten Schicht in den Formträger eingebracht wird, wobei im nachfolgenden dritten Verfahrensschritt, die erste, die zweite, die weitere erste und/oder die weitere zweite Schicht gemeinsam gepresst werden. In vorteilhafter Weise wird somit ein vielschichtiges Schallschutzelement aufgebaut, wobei mehrere Lagen im Formträger aus der ersten Materialmischung und aus der zweiten Materialmischung nacheinander aufgebaut werden und anschließend gemeinsam gepresst werden. Die Schallabsorptionsfähigkeit erhöht sich dabei mit der Anzahl der verwendeten Lagen, ohne dass die Herstellungskosten sich hierdurch maßgeblich erheblich erhöhen.According to a preferred embodiment, it is provided that between the second and the third method step, a fourth method step is carried out, in which the first material mixture is introduced into the mold carrier for forming a further first layer and / or that in one between the fourth and the third Process step performed fifth process step, the second material mixture is introduced to form a further second layer in the mold carrier, wherein in the subsequent third process step, the first, the second, the further first and / or the further second layer are pressed together. Advantageously, thus, a multilayer soundproofing element is constructed, wherein a plurality of layers in the mold carrier from the first material mixture and from the second material mixture are constructed successively and then pressed together. The sound absorption capacity increases with the number of layers used, without the production costs thereby significantly increase significantly.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines Schallschutzelements, wobei in einem ersten Verfahrensschritt eine erste Materialmischung aus Gummigranulat und Bindemittel zur Bildung der ersten Schicht in einem Formträger eingebracht und gepresst wird und dass in einem nachfolgenden zweiten Verfahrensschritt eine zweite Materialmischung aus Gummigranulat und Bindemittel zur Bildung der zweiten Schicht in den Formträger eingebracht und gepresst wird, wobei ein erster Bindemittelanteil in der ersten Materialmischung ungleich einem zweiten Bindemittelanteil in der zweiten Materialmischung ist und/oder eine erste Rohdichte der ersten Materialmischung ungleich einer zweiten Rohdichte der zweiten Materialmischung ist. Besonders vorteilhaft wird hierdurch wiederum ein mehrschichtiger Aufbau eines Schallschutzelements erzielt. Vorzugsweise ist vorgesehen, dass hier die erste Materialmischung im Wesentlichen der zweiten Materialmischung entspricht, wobei im ersten Verfahrensschritt ein anderer Pressdruck als im zweiten Verfahrensschritt verwendet wird, damit die Rohdichte der ersten Schicht ungleich der Rohdichte in der zweiten Schicht ist. Das Pressverfahren wird vorzugsweise unter Zuführung von Wärme durchgeführt, damit die erste und die zweite Schicht während des Pressvorgangs aushärten.Another object of the present invention is a process for producing a soundproofing element, wherein in a first process step, a first material mixture of rubber granules and binder for forming the first layer is introduced and pressed in a mold carrier and that in a subsequent second process step, a second material mixture of rubber granules and binder for forming the second layer is introduced and pressed into the mold carrier, wherein a first binder content in the first material mixture is not equal to a second binder content in the second material mixture and / or a first bulk density of the first material mixture is not equal to a second bulk density of the second material mixture. In this way, a multilayer construction of a soundproofing element is achieved in a particularly advantageous manner. It is preferably provided that in this case the first material mixture essentially corresponds to the second material mixture, wherein in the first method step a different pressing pressure than in the second method step is used, so that the bulk density of the first layer is not equal to the apparent density in the second layer. The pressing process is preferably carried out with the application of heat, so that the first and the second layer are cured during the pressing operation.
Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass in einem dritten Verfahrensschritt die erste Materialmischung zur Bildung einer weiteren ersten Schicht in dem Formträger eingebracht und gepresst wird und/oder dass in einem vierten Verfahrensschritt die zweite Materialmischung zur Bildung einer weiteren zweiten Schicht in dem Formträger eingebracht und gepresst wird. Auf dieser Weise ist die Herstellung weiterer Schichten möglich, wobei lediglich weitere Einfüll- und Pressvorgänge durchzuführen sind.According to a preferred embodiment, it is provided that in a third method step, the first material mixture is introduced and pressed to form a further first layer in the mold carrier and / or that introduced in a fourth process step, the second material mixture to form a further second layer in the mold carrier and is pressed. In this way, the production of further layers is possible, with only further filling and pressing operations are carried out.
In vorteilhafter Weise wird durch das Bindemittel eine stoffschlĂĽssige Verbindung zwischen benachbarten Schichten erzielt.Advantageously, a cohesive connection between adjacent layers is achieved by the binder.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus den Zeichnungen, sowie aus der nachfolgenden Beschreibung vom bevorzugten AusfĂĽhrungsformen anhand der Zeichnungen.Further details, features and advantages of the invention will become apparent from the drawings, as well as from the following description of the preferred embodiments with reference to the drawings.
Die Zeichnungen illustrieren dabei lediglich beispielhafte Ausführungsformen der Erfindung, welche den wesentlichen Erfindungsgedanken nicht einschränken.The drawings illustrate only exemplary embodiments of the invention, which do not limit the essential inventive idea.
- Figur 1FIG. 1
- zeigt eine schematische Schnittbildansicht eines Schallschutzelements gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.shows a schematic sectional view of a soundproofing element according to an exemplary embodiment of the present invention.
- Figur 2FIG. 2
- zeigt eine Schallschutzwand aufweisend ein Schallschutzelement gemäß einer beispielhaften Ausführungsform der vorliegenden Erfindung.shows a soundproofing wall having a soundproofing element according to an exemplary embodiment of the present invention.
In
Zur Herstellung dieses Schallschutzelementes werden grundsätzlich 3 verschiedene Herstellungsverfahren beschrieben:
- Gemäß einem ersten Herstellungsverfahren wird in einen Formträger eine erste Materialmischung aus Gummigranulat und Bindemittel zur Bildung der ersten Schicht 3 eingebracht, anschließend wird eine zweite Materialmischung aus Gummigranulat und Bindemittel zur Bildung der zweiten Schicht 4 in den Formträger eingebracht, anschließend wird erneut die erste Materialmischung zur Bildung der weiteren ersten Schicht 3' in den Formträger eingebracht und abschließend wird erneut die zweite Materialmischung zur Bildung der weiteren zweiten Schicht 4' in den Formträger eingebracht. In einem nachfolgenden Schritt wird im Rahmen eines gemeinsamen Pressschrittes das Material in dem Formträger derart gepresst, dass die erste Schicht 3, die
zweite Schicht 4, die weitere erste Schicht 3' und die weitere zweite Schicht 4' gepresst werden. Der Pressvorgang wird dabei unter Wärmezufuhr durchgeführt, so dass die erste Schicht 3, diezweite Schicht 4, die weitere erste Schicht 3' und die weitere zweite Schicht 4' ferner aushärten. Die Bindemittelanteile in der ersten und der zweiten Materialmischung sind hierbei verschieden.
- According to a first production method, a first material mixture of rubber granules and binder for forming the first layer 3 is introduced into a mold carrier, then a second material mixture of rubber granules and binder for forming the
second layer 4 is introduced into the mold carrier, then the first material mixture is again Forming the further first layer 3 'introduced into the mold carrier and finally the second material mixture is introduced again to form the further second layer 4' in the mold carrier. In a subsequent step, as part of a common pressing step, the material in the mold carrier is pressed such that the first layer 3, thesecond layer 4, the further first layer 3 'and the further second layer 4' are pressed. The pressing process is carried out under heat, so that the first layer 3, thesecond layer 4, the further first layer 3 'and the further second layer 4' further harden. The binder proportions in the first and the second material mixture are different here.
Ein alternatives zweites Herstellungsverfahren sieht vor, dass in einem ersten Schritt die erste Materialmischung aus Gummigranulat und Bindemittel zur Bildung der ersten Schicht 3 in den Formträger eingebracht und anschließend gepresst wird. In einem zweiten Schritt wird eine zweite Materialmischung aus Gummigranulat und Bindemittel zur Bildung der zweiten Schicht 4 in den Formträger eingebracht und ebenfalls sofort gepresst. Anschließend wird wiederum die erste Materialmischung in den Formträger eingebracht und gepresst, um die weitere erste Schicht 3' aufzubauen. In einem abschließenden Schritt wird wiederum die zweite Materialmischung in den Formträger eingebracht und gepresst, um die weitere zweite Schicht 4' zu bilden. Die erste Materialmischung und die zweite Materialmischung weisen hierbei wie auch in dem vorangegangenen ersten Herstellungsverfahren einem unterschiedlichen Bindemittelanteil auf.An alternative second production method provides that in a first step, the first material mixture of rubber granulate and binder for forming the first layer 3 is introduced into the mold carrier and then pressed. In a second step, a second material mixture of rubber granulate and binder to form the
Das dritte Herstellungsverfahren wird ähnlich wie das zweite Herstellungsverfahren durchgeführt, wobei die erste Materialmischung und die zweite Materialmischung identische Materialmischungen mit gleichen Bindemittelanteilen umfassen. Zunächst wird die Materialmischung in den Formträger eingebracht und gepresst, um die erste Materialschicht 3 zu bilden. Anschließend wird die gleiche Materialmischung wieder in den Formträger eingebracht und diesmal mit einem anderen Druck zur Bildung der zweiten Schicht 4 gepresst. Anschließend wird die gleiche Materialmischung wieder in den Formträger eingebracht und mit einem weiteren Druck gepresst, um die weitere erste Schicht 3' zu bilden. Anschließend wird die gleiche Materialmischung noch einmal in den Formträger eingebracht und mit einem vierten Druck gepresst, um die weitere zweite Schicht 4' zu bilden. Durch die Verwendung unterschiedlicher Pressdrücke werden unterschiedliche Rohdichten in den unterschiedlichen Schichten erzeugt, ohne dass andere Bindemittelanteile notwendig sind.The third manufacturing method is performed similarly to the second manufacturing method, wherein the first material mixture and the second material mixture comprise identical material mixtures with equal binder proportions. First, the material mixture is introduced into the mold carrier and pressed to form the first material layer 3. Subsequently, the same material mixture is introduced again into the mold carrier and this time pressed with a different pressure to form the
In
- 11
- SchallschutzelementSoundproofing element
- 22
- Schichtaufbaulayer structure
- 33
- Erste SchichtFirst shift
- 3'3 '
- Weitere erste SchichtFurther first shift
- 44
- Zweite SchichtSecond shift
- 4'4 '
- Weitere zweite SchichtAnother second shift
- 55
- Verstärkungsstrukturreinforcing structure
- 66
- Wabenstrukturhoneycomb structure
- 77
- Nut-Feder-VerbindungTongue and groove
- 88th
- SchallschutzwandNoise barrier
Claims (14)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010053612A DE102010053612A1 (en) | 2010-12-07 | 2010-12-07 | Soundproofing element, soundproof wall, shutter and method for producing a soundproofing element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2463451A1 true EP2463451A1 (en) | 2012-06-13 |
EP2463451B1 EP2463451B1 (en) | 2015-01-21 |
Family
ID=45350598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110009664 Active EP2463451B1 (en) | 2010-12-07 | 2011-12-07 | Sound insulation element, sound insulation wall, window shutter and method for producing a sound insulation element |
Country Status (2)
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EP (1) | EP2463451B1 (en) |
DE (1) | DE102010053612A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020111582A1 (en) | 2020-04-28 | 2021-10-28 | Conradi + Kaiser Gmbh | Flame-retardant elastic flooring element |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1017767B (en) * | 1952-05-23 | 1957-10-17 | Willy Maur | Loose or bound sound and thermal insulation layer for floating screeds, ceilings, walls, etc. |
GB1481218A (en) * | 1973-08-04 | 1977-07-27 | Pass & Co | Soundabsorbing element |
EP0679765A1 (en) * | 1994-03-30 | 1995-11-02 | Kurt Dr. Bitterli | Sound-proofing element and method for the production of a sound-proofing element |
US20070137927A1 (en) * | 2003-01-31 | 2007-06-21 | Robert Ducharme | Multi-composite acoustic panel |
US20080029337A1 (en) * | 2006-08-03 | 2008-02-07 | Glacier Bay, Inc. | System for reducing acoustic energy |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH684279A5 (en) * | 1991-07-05 | 1994-08-15 | Umb Trading Ltd | A noise protection element for noise barriers. |
DE19539309C2 (en) | 1995-10-23 | 2000-01-05 | Thomas Goetz | Soundproofing or soundproofing material, building board made of it and process for its manufacture |
DE102008011627A1 (en) * | 2008-02-28 | 2009-09-17 | Sto Ag | Method for producing a plate-shaped or profile-shaped component as well as a plate or profile-shaped component |
-
2010
- 2010-12-07 DE DE102010053612A patent/DE102010053612A1/en not_active Withdrawn
-
2011
- 2011-12-07 EP EP20110009664 patent/EP2463451B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1017767B (en) * | 1952-05-23 | 1957-10-17 | Willy Maur | Loose or bound sound and thermal insulation layer for floating screeds, ceilings, walls, etc. |
GB1481218A (en) * | 1973-08-04 | 1977-07-27 | Pass & Co | Soundabsorbing element |
EP0679765A1 (en) * | 1994-03-30 | 1995-11-02 | Kurt Dr. Bitterli | Sound-proofing element and method for the production of a sound-proofing element |
US20070137927A1 (en) * | 2003-01-31 | 2007-06-21 | Robert Ducharme | Multi-composite acoustic panel |
US20080029337A1 (en) * | 2006-08-03 | 2008-02-07 | Glacier Bay, Inc. | System for reducing acoustic energy |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020111582A1 (en) | 2020-04-28 | 2021-10-28 | Conradi + Kaiser Gmbh | Flame-retardant elastic flooring element |
WO2021219726A1 (en) | 2020-04-28 | 2021-11-04 | Conradi + Kaiser Gmbh | Flame-retardant elastic floor covering element |
Also Published As
Publication number | Publication date |
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EP2463451B1 (en) | 2015-01-21 |
DE102010053612A1 (en) | 2012-06-14 |
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