EP1263583A1 - Sound-absorbing element - Google Patents

Sound-absorbing element

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Publication number
EP1263583A1
EP1263583A1 EP01925480A EP01925480A EP1263583A1 EP 1263583 A1 EP1263583 A1 EP 1263583A1 EP 01925480 A EP01925480 A EP 01925480A EP 01925480 A EP01925480 A EP 01925480A EP 1263583 A1 EP1263583 A1 EP 1263583A1
Authority
EP
European Patent Office
Prior art keywords
layer
soundproofing
sound
barrier layer
soundproofing element
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
Application number
EP01925480A
Other languages
German (de)
French (fr)
Other versions
EP1263583B1 (en
Inventor
Helmut Ruffer
Uwe Statter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plastocell Kunststoff GmbH
Original Assignee
Plastocell Kunststoff GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Plastocell Kunststoff GmbH filed Critical Plastocell Kunststoff GmbH
Publication of EP1263583A1 publication Critical patent/EP1263583A1/en
Application granted granted Critical
Publication of EP1263583B1 publication Critical patent/EP1263583B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Definitions

  • the invention relates to a soundproofing element or surface product according to the features specified in the preamble of claim 1.
  • a soundproofing element which is designed as a self-supporting soundproofing panel and has a layer of rigid polyurethane, phenolic or melamine hard foam with very low density as an effective sound absorption medium.
  • the plastic foam layer is laminated on both sides with dimensionally stable flat structures.
  • Cross-linked synthetic fiber fleeces or block foam layers hewn on the outside are provided as polyurethane foam as such flat structures.
  • These block foam layers can also be reinforced by a mineral, glass or synthetic fiber fleece, which is melted into the skin when the block foam layer is thermally digested.
  • the sound absorption medium or the soundproofing material consists of a rigid foam, so that additional effort is required for shaping and adapting to the contour of the component to be insulated. Furthermore, such foams have a considerable porosity and thus absorption capacity for volatile substances, so that, in particular when oil, diesel fuel or petrol penetrates, there is a considerable safety risk with regard to ignition with explosive combustion.
  • the object of the invention is to further develop the sound insulation element or surface product in such a way that on the one hand the penetration of substances is prevented and on the other hand the acoustic properties are not adversely affected.
  • the soundproofing element or surface product should have a simple, inexpensive structure and should be easy to handle during manufacture and assembly. Furthermore, the soundproofing element should be heat-stable, taking into account the requirements in the automotive industry, and should have a long service life and functionality.
  • the soundproofing element according to the invention is a surface product and is characterized by a simple and functional design and meets the sound requirements without restrictions over a long period of many years.
  • the layer of sound-absorbing material is designed as a fiber material, in particular as a non-woven material. Such fiber or nonwoven materials do not contain pores like the plastic foam layer of the soundproofing board mentioned at the beginning, but free spaces between the fibers, these free spaces being largely connected to one another, so that any volatile substances that have penetrated can easily emerge again and are not stored.
  • the barrier layer made of a thermoplastic material arranged on a surface of the sound-absorbing material essentially prevents the penetration, in particular of volatile substances, such as water, oil, diesel fuel, gasoline, dust and the like, in particular when exposed to temperature and / or pressure.
  • the barrier layer is preferably made of polypropylene or other thermoplastic materials and is directly connected to the sound-absorbing material.
  • the barrier layer is applied in a particularly advantageous manner immediately after manufacture, in particular by means of an extruder, while still warm to the surface of the sound-absorbing material, so that a "heat connection" with the sound-insulating material is obtained.
  • the sound absorbing material, and preferably also the barrier layer are designed to be flexible in an expedient manner, so that the mounting and fixing 'is easily to components of any possible outer contour.
  • the fibers and / or the material components of the nonwoven material have at least approximately no capacity for any other substances that may have penetrated into the sound-absorbing material, so that their storage or retention is essentially prevented overall.
  • the sound-absorbing material likewise contains thermoplastic constituents and is in particular designed as a thermoplastic fleece.
  • the sound-absorbing material can also contain carbon fibers or can be made entirely of carbon fibers.
  • the soundproofing element according to the invention is heat-stable in a temperature range up to greater than + 200 ° C., even over a longer period of time. It should also be noted that the soundproofing element and / or the surface material withstands an open flame over a longer period of time.
  • the soundproofing element according to the invention can be designed flat or as a flat track or as a three-dimensional body. Due to the direct thermal connection of the thermoplastic barrier layer with the sound-absorbing material, the detachment to be feared when using adhesives when exposed to steam or water or the like, even if this occurs under pressure, is avoided.
  • 1 schematically shows a section through the sound insulation element
  • 2 schematically shows a section through the soundproofing element provided with a barrier layer on both surfaces
  • FIG. 3 schematically shows a section through the sound insulation element in combination with an additional acoustically active material
  • Fig. 4 schematically shows a section similar to Fig. 3, however, the barrier layer is arranged on the outside.
  • Fig. 1 shows schematically a section through the surface product and / or the soundproofing element, containing a layer 2 of soundproofing material which is designed as a fiber material, in particular as a thermoplastic nonwoven.
  • Layer 2 preferably contains or consists of carbon fibers, but other acoustically active fiber materials can also be provided.
  • a barrier layer 4 which consists of a thermoplastic material, in particular of polypropylene, is arranged on a surface of the layer 2 or the thermoplastic, sound-absorbing material.
  • the barrier layer 4 is connected directly to the surface of the layer 2.
  • the barrier layer 4 is designed as a thin film made of thermoplastic material.
  • the thermoplastic barrier layer 4 is applied to the layer 2, which is in particular provided as a flexible web, while it is still warm, for example by means of a roller arrangement or the like, to which the layer 2 made of sound-absorbing material and the barrier layer 4 still in the warm state are fed together. There is thus a direct, permanent connection between the layer 2 and the barrier layer 4.
  • the thin barrier layer 4 advantageously avoids unwanted sound reflections and ensures unimpeded sound passage.
  • the outer surface of the barrier layer 4 facing away from the layer 2 can also be provided with an additional thin layer 3, which has been applied in particular by vapor deposition.
  • This additional thin layer 3 advantageously consists of aluminum, or an aluminum alloy or ceramic, or of a material that can be applied by vapor deposition.
  • the soundproofing element can also be designed as a three-dimensional body, one surface of which has the barrier layer 4 made of thermoplastic material.
  • FIG. 2 shows an embodiment of the sound insulation element, the sound insulation layer 2 of which is provided on both sides with a barrier layer 4, 5.
  • the above explanations regarding the barrier layer 4 apply correspondingly to the second barrier layer 5.
  • Fig. 3 shows schematically the soundproofing element made of the soundproofing layer 2 and the barrier layer 4 in combination with additional soundproofing material. 6.
  • the sound insulation material 6 can be formed in a known manner as a foamed or non-woven material or the like.
  • the barrier layer 4 reliably prevents the penetration of, in particular, volatile materials, such as water, oil or other substances.
  • the soundproofing material 6 can be provided with self-adhesive equipment in order to be easily connectable to the soundproofing element and / or for example the sheet metal of an engine compartment, the wall of a soundproofing cabin or the like.
  • FIG. 4 basically corresponds to the embodiment according to FIG. 3, but the surface element according to the invention is arranged on the additional sound insulation material 6 such that the layer 2 made of sound insulation material is arranged directly on the surface of the additional sound insulation material 6 is.
  • the barrier layer 4 lying on top according to the drawing can be provided with the vapor-coated layer 3 on the free surface, as is explained with reference to FIG. 1.

Abstract

The invention relates to a sound-absorbing element containing a layer (2) made of a sound-absorbing material, to whose at least one surface an impervious layer (4) is applied. The aim of the invention is to further develop the sound-absorbing element in order to prevent the penetration of, in particular, volatile substances while, at the same time, attaining favorable acoustic properties. To this end, the invention provides that the layer (2) made of a sound-absorbing material is provided in the form of a fibrous material, and the impervious layer (4) is provided in the form of a thermoplastic material.

Description

Schalldämmelement Sound Absorber
Die Erfindung bezieht sich auf ein Schalldämmelement oder Oberflächenprodukt gemäß den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The invention relates to a soundproofing element or surface product according to the features specified in the preamble of claim 1.
Aus der DE-A-35 34 690 ist ein derartiges Schalldämmelement bekannt, welches als eine selbsttragende Schalldämmplatte ausgebildet ist und als wirksames Schallabsorptionsmedium eine Schicht aus steifem Polyurethan-, Phenol- oder Melaminhartschaum mit sehr geringer Dichte aufweist. Um diese Kunststoff-Schaumschicht vor Beschädigung zu schützen und um eine selbsttragende Sandwichstruktur zu erreichen, ist die Kunststoff- Schaumschicht auf beiden Seiten mit dimensionsstabilen Flächengebilden kaschiert. Als derartige Flächengebilde sind vernetzte Kunstfaservliese oder außenseitig verhautete Blockschaumschichten als Polyurethanschaum vorgesehen. Auch diese Blockschaumschichten können durch ein Mineral-, Glas- oder Kunstfaservlies verstärkt sein, welches beim thermischen Verhauten der Blockschaumschicht in die Haut eingeschmolzen wird.From DE-A-35 34 690 such a soundproofing element is known which is designed as a self-supporting soundproofing panel and has a layer of rigid polyurethane, phenolic or melamine hard foam with very low density as an effective sound absorption medium. In order to protect this plastic foam layer from damage and to achieve a self-supporting sandwich structure, the plastic foam layer is laminated on both sides with dimensionally stable flat structures. Cross-linked synthetic fiber fleeces or block foam layers hewn on the outside are provided as polyurethane foam as such flat structures. These block foam layers can also be reinforced by a mineral, glass or synthetic fiber fleece, which is melted into the skin when the block foam layer is thermally digested.
Insbesondere in der Automobilindustrie besteht ein erheblicher Bedarf für den Einsatz von Schalldämmelementen, vornehmlich in Motorräumen von Nutzfahrzeugen, Bussen, Kommunalfahrzeugen, Baumaschinen und dergleichen. Weitere Einsatzgebiete sind beispielsweise die allgemeine Maschinenindustrie, Schallschutzkabinen, Abschirmungen, Trennwände oder der Bootsbau, wobei durch die beispielshafte Nennung keineswegs eine Beschränkung erfolgt. Bei derartigen Schalldämmelementen besteht die Problema- tik, daß flüchtige Stoffe, wie Wasser, Öl, Dieselkraftstoff, Benzin, Staub oder ähnliches in nachteiliger Weise eindringen. Daher wurden in der Vergangenheit derartige Schalldämmelemente mit einer Aluminiumfolie kaschiert, wodurch aber in Folge von Schallreflektionen oder mangelnder Schalldurchlässigkeit die Wirksamkeit nicht unerheblich reduziert wurde. Bei der eingangs erwähnten selbsttragenden Schalldämmplatte besteht das Schallabsorptionsmedium bzw. das schalldämmende Material aus einem steifen Schaum, so daß ein zusätzlicher Aufwand für die Formgebung und Anpassung an die Kontur des zu dämmenden Bauteils erforderlich ist. Des weiteren weisen derartige Schaumstoffe eine erhebliche Porosität und somit Aufnahmefähigkeit für flüchtige Stoffe auf, so daß insbesondere beim Eindringen von Öl, Dieselkraftstoff oder Benzin ein beträchtliches Sicherheitsrisiko hinsichtlich der Entzündung mit explosionsartiger Verbrennung gegeben ist.In the automotive industry in particular, there is a considerable need for the use of soundproofing elements, primarily in engine compartments of commercial vehicles, buses, municipal vehicles, construction machines and the like. Other areas of application are, for example, the general machine industry, soundproofing cabins, shields, partitions or boat building, although there is no limitation due to the exemplary mentioning. The problem with such sound insulation elements is tic that volatile substances such as water, oil, diesel fuel, gasoline, dust or the like penetrate disadvantageously. For this reason, soundproofing elements of this type have been laminated with an aluminum foil in the past, but as a result of sound reflections or a lack of sound permeability, the effectiveness has been significantly reduced. In the case of the self-supporting soundproofing panel mentioned at the beginning, the sound absorption medium or the soundproofing material consists of a rigid foam, so that additional effort is required for shaping and adapting to the contour of the component to be insulated. Furthermore, such foams have a considerable porosity and thus absorption capacity for volatile substances, so that, in particular when oil, diesel fuel or petrol penetrates, there is a considerable safety risk with regard to ignition with explosive combustion.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, das Schalldämmelement oder Oberflächenprodukt dahingehend weiterzubilden, daß einerseits das Eindringen von Stoffen verhindert und andererseits die akustischen Eigenschaften nicht in nachteiliger weise beeinträchtigt werden. Das Schalldämmelement oder Oberflächenprodukt soll einen einfachen kostengünstigen Aufbau aufweisen und eine einfache Handhabung bei der Fertigung und Montage ermöglichen. Ferner soll das Schalldämmelement vor allem unter Berücksichtigung der Anforderungen in der Automobilindustrie wärmestabil sein und eine lange Lebensdauer und Funktionsfähigkeit aufweisen.Proceeding from this, the object of the invention is to further develop the sound insulation element or surface product in such a way that on the one hand the penetration of substances is prevented and on the other hand the acoustic properties are not adversely affected. The soundproofing element or surface product should have a simple, inexpensive structure and should be easy to handle during manufacture and assembly. Furthermore, the soundproofing element should be heat-stable, taking into account the requirements in the automotive industry, and should have a long service life and functionality.
Die Lösung dieser Aufgabe erfolgt gemäß den im Patentanspruch 1 angegebenen Merkmalen.This object is achieved according to the features specified in claim 1.
Das erfindungsgemäße Schalldämmelement ist ein Oberflächenprodukt und zeichnet sich durch einen einfachen und funktionsgerechten Aufbau aus und erfüllt die schalltechnischen Anforderungen ohne Einschränkungen über einen langen Zeitraum von vielen Jahren. Die Schicht aus schalldämmendem Material ist als Faserwerkstoff, insbesondere als Vlieswerkstoff ausgebildet. Derartige Faser- oder Vlieswerkstoffe enthalten keine Poren wie die Kunststoffschaumschicht der eingangs erwähnten Schalldämmplatte, sondern Freiräume zwischen den Fasern, wobei diese Freiräume weitestgehend miteinander in Verbindung stehen, so daß gegebenenfalls eingedrungene flüchtige Stoffe problemlos wieder heraustreten können und nicht gespeichert werden. Die auf einer Oberfläche des schalldämmenden Materials angeordnete Sperrschicht aus einem thermoplastischen Werkstoff verhindert im wesentlichen das Eindringen, insbesondere von flüchtigen Stoffen, wie Wasser, Öl, Dieselkraftstoff, Benzin, Staub und dergleichen, und zwar auch insbesondere bei Temperatureinwirkung und/oder Druck. Die Sperrschicht besteht bevorzugt aus Polypropylen oder anderen thermoplastischen Werkstoffen und ist direkt mit dem schalldämmenden Material verbunden. Hierzu wird die Sperrschicht in besonders vorteilhafter Weise unmittelbar nach der Fertigung, insbesondere mittels eines Extruders, noch im warmen Zustand auf die Oberfläche des schalldämmenden Materials aufgebracht, so daß eine "Wärmeverbindung" mit dem schalldämmenden Material erhalten wird. In bevorzugter Weise sind somit zwischen der thermoplastischen Sperrschicht und dem schalldämmenden Material keine Klebemittel vorhanden. Das schalldämmende Material und bevorzugt auch die Sperrschicht sind in zweckmäßiger Weise flexibel ausgebildet, so daß die Anbringung und Befestigung an Bauelementen beliebiger Außenkontur problemlos ' möglich ist. Die Fasern und/oder die Materialbestandteile des Vlieswerkstoffes besitzen zumindest näherungsweise kein Aufnahmevermögen für gegebenenfalls in das schalldämmende Material eingedrungene sonstige Stoffe, so daß insgesamt deren Speicherung oder Festhalten im wesentlichen unterbunden ist.The soundproofing element according to the invention is a surface product and is characterized by a simple and functional design and meets the sound requirements without restrictions over a long period of many years. The layer of sound-absorbing material is designed as a fiber material, in particular as a non-woven material. Such fiber or nonwoven materials do not contain pores like the plastic foam layer of the soundproofing board mentioned at the beginning, but free spaces between the fibers, these free spaces being largely connected to one another, so that any volatile substances that have penetrated can easily emerge again and are not stored. The barrier layer made of a thermoplastic material arranged on a surface of the sound-absorbing material essentially prevents the penetration, in particular of volatile substances, such as water, oil, diesel fuel, gasoline, dust and the like, in particular when exposed to temperature and / or pressure. The barrier layer is preferably made of polypropylene or other thermoplastic materials and is directly connected to the sound-absorbing material. For this purpose, the barrier layer is applied in a particularly advantageous manner immediately after manufacture, in particular by means of an extruder, while still warm to the surface of the sound-absorbing material, so that a "heat connection" with the sound-insulating material is obtained. There are therefore preferably no adhesives between the thermoplastic barrier layer and the sound-absorbing material. The sound absorbing material, and preferably also the barrier layer are designed to be flexible in an expedient manner, so that the mounting and fixing 'is easily to components of any possible outer contour. The fibers and / or the material components of the nonwoven material have at least approximately no capacity for any other substances that may have penetrated into the sound-absorbing material, so that their storage or retention is essentially prevented overall.
Im Rahmen der Erfindung enthält das schalldämmende Material gleichfalls thermoplastische Bestandteile und ist insbesondere als ein thermoplastisches Vlies ausgebildet. Femer kann das schalldämmende Material Kohlefasern enthalten oder auch völlig aus Kohlefasern gefertigt sein. Des weiteren ist das erfindungsgemäße Schalldämmelement in einem Temperaturbereich bis größer +200° C wärmestabil, und zwar auch über einen längeren Zeitraum. Weiterhin sei festgehalten, daß das Schalldämmelement und/oder das Oberflächenmaterial über einen längeren Zeitraum einer offenen Flamme standhält. Des weiteren kann das erfindungsgemäße Schalldämmelement plan bzw. als ebene Bahn oder auch als ein dreidimensionaler Körper ausgebildet sein. Aufgrund der direkten Wärmeverbindung der thermoplastischen Sperrschicht mit dem schalldämmenden Material wird das bei Einsatz von Klebestoffen zu befürchtende Ablösen beim Einwirken von Dampf oder Wasser oder dergleichen, selbst wenn dies unter Druck geschieht, vermieden.In the context of the invention, the sound-absorbing material likewise contains thermoplastic constituents and is in particular designed as a thermoplastic fleece. The sound-absorbing material can also contain carbon fibers or can be made entirely of carbon fibers. Furthermore, the soundproofing element according to the invention is heat-stable in a temperature range up to greater than + 200 ° C., even over a longer period of time. It should also be noted that the soundproofing element and / or the surface material withstands an open flame over a longer period of time. Furthermore, the soundproofing element according to the invention can be designed flat or as a flat track or as a three-dimensional body. Due to the direct thermal connection of the thermoplastic barrier layer with the sound-absorbing material, the detachment to be feared when using adhesives when exposed to steam or water or the like, even if this occurs under pressure, is avoided.
Weiterbildungen und besondere Ausgestaltungen der Erfindung sind in den Unteransprüchen sowie der weiteren Beschreibung angegeben.Further developments and special refinements of the invention are specified in the subclaims and in the further description.
Die Erfindung wird nachfolgend anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert, ohne daß insoweit eine Beschränkung erfolgt. Es zeigen:The invention is explained below with reference to the exemplary embodiments shown in the drawing, without there being any limitation. Show it:
Fig. 1 schematisch einen Schnitt durch das Schalldämmelement, Fig. 2 Fig. 2 schematisch einen Schnitt durch das auf beiden Oberflächen mit einer Sperrschicht versehene Schalldämmelement,1 schematically shows a section through the sound insulation element, 2 schematically shows a section through the soundproofing element provided with a barrier layer on both surfaces,
Fig. 3 schematisch einen Schnitt durch das Schalldämmelement in Kombination mit einem zusätzlichen akustisch wirksamen Werkstoff,3 schematically shows a section through the sound insulation element in combination with an additional acoustically active material,
Fig. 4 schematisch einen Schnitt ähnlich Fig. 3, wobei jedoch die Sperrschicht an der Außenseite angeordnet ist.Fig. 4 schematically shows a section similar to Fig. 3, however, the barrier layer is arranged on the outside.
Fig. 1 zeigt schematisch einen Schnitt durch das Oberlächenprodukt und/oder das Schalldämmelement, enthaltend eine Schicht 2 aus schalldämmendem Material, welches als Faserwerkstoff, insbesondere als thermoplastisches Vlies ausgebildet ist. Die Schicht 2 enthält oder besteht in bevorzugter Weise aus Kohlefasern, doch können gleichermaßen auch andere akustisch wirksame Faserwerkstoffe vorgesehen sein. Ferner ist an einer Oberfläche der Schicht 2 bzw. des thermoplastischen, schalldämmenden Materials eine Sperrschicht 4 angeordnet, welche aus einem thermoplastischen Werkstoff, insbesondere aus Polypropylen, besteht. Die Sperrschicht 4 ist unmittelbar mit der Oberfläche der Schicht 2 verbunden. Die Sperrschicht 4 ist als eine dünne Folie aus thermoplastischem Werkstoff ausgebildet. Die thermoplastische Sperrschicht 4 ist während der Fertigung noch im warmen Zustand auf die insbesondere als flexible Bahn bereitgestellte Schicht 2 aufgebracht, beispielsweise mittels einer Walzenanordnung oder dergleichen, welcher die Schicht 2 aus schalldämmendem Material und die noch im warmen Zustand befindliche Sperrschicht 4 gemeinsam zugeführt werden. Es besteht somit eine direkte, dauerhafte Verbindung zwischen der Schicht 2 und der Sperrschicht 4. Die dünne Sperrschicht 4 vermeidet in vorteilhafter Weise unerwünschte Schallreflektionen und gewährleistet einen ungehinderten Schalldurchtritt. In besonders zweckmäßiger Weise kann ferner die der Schicht 2 abgewandte Außenfläche der Sperrschicht 4 mit einer zusätzlichen dünnen Schicht 3 versehen sein, welche insbesondere durch Bedampfen aufgebracht worden ist. Diese zusätzliche dünne Schicht 3 besteht in vorteilhafter Weise aus Aluminium, oder einer Aluminiumlegierung oder aus Keramik oder aus einem durch Bedampfen aufbringbaren Material. Aufgrund dieser zusätzlichen dünnen Schicht 3, deren Dicke wesentlich kleiner ist als die Dicke der Sperrschicht, wird in besonders zweckmäßiger Weise deren Oberflächengüte und/oder Härte verbessert, so daß die Gefahr von Beschädigungen der Sperrschicht wesentlich reduziert wird. Anstelle des dargestellten planen oder als Bahn ausgebildeten Schalldämmelements kann erfindungsgemäß das Schalldämmelement auch als dreidimensionaler Körper ausgebildet sein, wobei eine Oberfläche desselben die Sperrschicht 4 aus thermoplastischem Werkstoff aufweist.Fig. 1 shows schematically a section through the surface product and / or the soundproofing element, containing a layer 2 of soundproofing material which is designed as a fiber material, in particular as a thermoplastic nonwoven. Layer 2 preferably contains or consists of carbon fibers, but other acoustically active fiber materials can also be provided. Furthermore, a barrier layer 4, which consists of a thermoplastic material, in particular of polypropylene, is arranged on a surface of the layer 2 or the thermoplastic, sound-absorbing material. The barrier layer 4 is connected directly to the surface of the layer 2. The barrier layer 4 is designed as a thin film made of thermoplastic material. The thermoplastic barrier layer 4 is applied to the layer 2, which is in particular provided as a flexible web, while it is still warm, for example by means of a roller arrangement or the like, to which the layer 2 made of sound-absorbing material and the barrier layer 4 still in the warm state are fed together. There is thus a direct, permanent connection between the layer 2 and the barrier layer 4. The thin barrier layer 4 advantageously avoids unwanted sound reflections and ensures unimpeded sound passage. In a particularly expedient manner, the outer surface of the barrier layer 4 facing away from the layer 2 can also be provided with an additional thin layer 3, which has been applied in particular by vapor deposition. This additional thin layer 3 advantageously consists of aluminum, or an aluminum alloy or ceramic, or of a material that can be applied by vapor deposition. Because of this additional thin layer 3, the thickness of which is significantly smaller than the thickness of the barrier layer, its surface quality and / or hardness is improved in a particularly expedient manner, so that the risk of damage to the barrier layer is substantially reduced. Instead of the planar soundproofing element shown or in the form of a web, the soundproofing element can also be designed as a three-dimensional body, one surface of which has the barrier layer 4 made of thermoplastic material.
In Fig. 2 ist eine Ausführungsform des Schalldämmelements dargestellt, dessen schalldämmende Schicht 2 beidseitig jeweils mit einer Sperrschicht 4, 5 versehen ist. Die vorstehenden Erläuterungen zur Sperrschicht 4 gelten entsprechend zur zweiten Sperrschicht 5.FIG. 2 shows an embodiment of the sound insulation element, the sound insulation layer 2 of which is provided on both sides with a barrier layer 4, 5. The above explanations regarding the barrier layer 4 apply correspondingly to the second barrier layer 5.
Fig. 3 zeigt schematisch das Schalldämmelement aus der schalldämmenden Schicht 2 und der Sperrschicht 4 in Kombination mit zusätzlichem Schalldämm-Material. 6. Das Schalldämm-Material 6 kann in bekannter Weise als geschäumter oder vliesgefertigter Werkstoff oder dergleichen ausgebildet sein. Die Sperrschicht 4 verhindert zuverlässig das Eindringen von insbesondere flüchtigen Werkstoffen, wie Wasser, Öl oder sonstigen Stoffen. Das Schalldämm-Material 6 kann mit einer Selbstklebeausrüstung versehen sein, um mit dem Schalldämmelement und/oder beispielsweise dem Blech eines Motorraumes, der Wand einer Schallschutzkabine oder dergleichen in einfacher Weise verbindbar zu sein.Fig. 3 shows schematically the soundproofing element made of the soundproofing layer 2 and the barrier layer 4 in combination with additional soundproofing material. 6. The sound insulation material 6 can be formed in a known manner as a foamed or non-woven material or the like. The barrier layer 4 reliably prevents the penetration of, in particular, volatile materials, such as water, oil or other substances. The soundproofing material 6 can be provided with self-adhesive equipment in order to be easily connectable to the soundproofing element and / or for example the sheet metal of an engine compartment, the wall of a soundproofing cabin or the like.
Die in Fig. 4 dargestellte Ausführungsform entspricht grundsätzlich der Ausführungsform gemäß Fig. 3, wobei jedoch das erfindungsgemäße Oberflächenelement derart auf dem zusätzlichen Schalldämm-Material 6 angeordnet ist, daß die Schicht 2 aus schalldämmendem Material direkt auf der Oberfläche des zusätzlichen Schalldämm-Materials 6 angeordnet ist. In bevorzugter Weise kann die gemäß Zeichnung obenliegende Sperrschicht 4 an der freien Oberfläche mit der bedampften Schicht 3 versehen sein, wie es anhand von Fig. 1 erläutert ist. The embodiment shown in FIG. 4 basically corresponds to the embodiment according to FIG. 3, but the surface element according to the invention is arranged on the additional sound insulation material 6 such that the layer 2 made of sound insulation material is arranged directly on the surface of the additional sound insulation material 6 is. In a preferred manner, the barrier layer 4 lying on top according to the drawing can be provided with the vapor-coated layer 3 on the free surface, as is explained with reference to FIG. 1.

Claims

Patentansprüche claims
1 . Schalldämmelement mit einer Schicht (2) aus schalldämmendem Material, an deren wenigsten einen Oberfläche eine Sperrschicht (4) angeordnet ist, dadurch gekennzeichnet, daß die Schicht (2) aus schalldämmendem Material als ein Faserwerkstoff ausgebildet ist und daß die Sperrschicht (4) als thermoplastischer Werkstoff ausgebildet ist.1 . Soundproofing element with a layer (2) of soundproofing material, on the least one surface of which a barrier layer (4) is arranged, characterized in that the layer (2) of soundproofing material is designed as a fiber material and that the barrier layer (4) is made of a thermoplastic material Material is formed.
2. Schalldämmelement nach Anspruch 1 , dadurch gekennzeichnet, daß die Sperrschicht (4) unmittelbar mit der Schicht (2) verbunden ist und/oder daß die Sperrschicht (4) noch im warmen Zustand auf die Schicht (2) aufgebracht ist und/oder daß zwischen der Schicht (2) und der Sperrschicht (4) eine Wärmeverbindung vorhanden ist.2. Soundproofing element according to claim 1, characterized in that the barrier layer (4) is directly connected to the layer (2) and / or that the barrier layer (4) is still applied to the layer (2) in the warm state and / or that there is a thermal connection between the layer (2) and the barrier layer (4).
3. Schalldämmelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schicht (2) aus schalldämmendem Material als ein thermoplastisches Vlies ausgebildet ist.3. Soundproofing element according to claim 1 or 2, characterized in that the layer (2) is made of soundproofing material as a thermoplastic fleece.
4. Schalldämmelement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schicht (2) teilweise oder vollständig aus Kohlefasern besteht.4. Soundproofing element according to one of claims 1 to 3, characterized in that the layer (2) consists partly or completely of carbon fibers.
5. Schalldämmelement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schicht (2) aus schalldämmendem Material flexibel ausgebildet ist und/oder daß das Schalldämmelement insgesamt flexibel ausgebildet ist.5. Soundproofing element according to one of claims 1 to 4, characterized in that the layer (2) made of soundproofing material is flexible and / or that the soundproofing element is flexible overall.
6. Schalldämmelement, insbesondere nach einem der Ansprüche 1 bis 5, gekennzeichnet durch die Kombination mit Schalldämm-Material (6), welches insbesondere als ein geschäumter oder vliesgefertigter Werkstoff ausgebildet ist.6. Soundproofing element, in particular according to one of claims 1 to 5, characterized by the combination with soundproofing material (6), which is in particular designed as a foamed or non-woven material.
7. Schalldämmelement nach Anspruch 6, dadurch gekennzeichnet, daß das Schalldämm-Material (6) eine Selbstklebeausrüstung aufweist. 7. Soundproofing element according to claim 6, characterized in that the soundproofing material (6) has a self-adhesive equipment.
EP01925480A 2000-03-16 2001-03-16 Method for production of a sound-absorbing element Expired - Lifetime EP1263583B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20004796U 2000-03-16
DE20004796U DE20004796U1 (en) 2000-03-16 2000-03-16 Soundproofing element
PCT/EP2001/003047 WO2001070499A1 (en) 2000-03-16 2001-03-16 Sound-absorbing element

Publications (2)

Publication Number Publication Date
EP1263583A1 true EP1263583A1 (en) 2002-12-11
EP1263583B1 EP1263583B1 (en) 2004-09-29

Family

ID=7938801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01925480A Expired - Lifetime EP1263583B1 (en) 2000-03-16 2001-03-16 Method for production of a sound-absorbing element

Country Status (10)

Country Link
EP (1) EP1263583B1 (en)
AT (1) ATE277759T1 (en)
AU (1) AU2001252215A1 (en)
DE (2) DE20004796U1 (en)
DK (1) DK1263583T3 (en)
ES (1) ES2227175T3 (en)
PL (1) PL358099A1 (en)
PT (1) PT1263583E (en)
TR (1) TR200402578T4 (en)
WO (1) WO2001070499A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102004017701A1 (en) * 2004-04-10 2005-10-27 Saurer Gmbh & Co. Kg Spindle cover, especially for a twisting machine, comprises damping plates attached to a flexible sheet that also acts as a hinge
DE202007007323U1 (en) 2007-05-23 2007-08-16 Gummi-Welz Gmbh U. Co. Kg Gummi-Kunststofftechnik-Schaumstoffe Isolating unit for constructing/isolating e.g. engine compartment lining, has foamed material layers that are made of high and low heat-resistant closed porous foamed materials, and connected to each other
ES2335253B1 (en) * 2007-06-11 2011-05-16 Gea 21, S.A. ACOUSTIC INSULATION AND PROCEDURE FOR OBTAINING.
ES2339418B1 (en) * 2008-11-18 2011-06-09 Gea 21, S.A. IMPROVEMENTS INTRODUCED IN THE PATENT OF INVENTION P200701600 BY ACOUSTIC INSULATION AND PROCEDURE FOR OBTAINING IT.

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DE2946892A1 (en) * 1979-11-21 1981-06-04 Erste Deutsche Basaltwolle Kg A. Messler, 8712 Volkach Heat and sound insulation - for metal structures by fibre mat covering plastic layer with filler
DE3539146A1 (en) * 1985-11-05 1987-05-14 Ford Werke Ag WHEEL HOUSING LINING FOR MOTOR VEHICLES
DE9114103U1 (en) * 1991-11-13 1992-02-06 Johann Borgers Gmbh & Co Kg, 4290 Bocholt, De
US5298694A (en) * 1993-01-21 1994-03-29 Minnesota Mining And Manufacturing Company Acoustical insulating web
DE9408097U1 (en) * 1994-05-17 1995-09-14 Faist M Gmbh & Co Kg Soundproofing component
IT239745Y1 (en) * 1996-05-27 2001-03-13 San Valeriano S P A WHEELHOUSE COVER PANEL FOR VEHICLES.
DE19821532A1 (en) * 1998-05-14 1999-11-25 Hp Chemie Pelzer Res & Dev Lower cost, heat and noise absorbing shroud, manufacturing method and use of shroud in an engine vehicle compartment
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Title
See references of WO0170499A1 *

Also Published As

Publication number Publication date
AU2001252215A1 (en) 2001-10-03
ES2227175T3 (en) 2005-04-01
PL358099A1 (en) 2004-08-09
DE20004796U1 (en) 2000-07-06
DK1263583T3 (en) 2004-12-20
PT1263583E (en) 2005-01-31
ATE277759T1 (en) 2004-10-15
DE50103877D1 (en) 2004-11-04
EP1263583B1 (en) 2004-09-29
WO2001070499A1 (en) 2001-09-27
TR200402578T4 (en) 2004-12-21

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