FR2983148A1 - Acoustic protection component for car, has high surface density sealing layer made of polyvinyl butyral and placed on elastically compressible layer, where layers respectively form mass and spring of mass-spring type insulation system - Google Patents
Acoustic protection component for car, has high surface density sealing layer made of polyvinyl butyral and placed on elastically compressible layer, where layers respectively form mass and spring of mass-spring type insulation system Download PDFInfo
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- FR2983148A1 FR2983148A1 FR1160923A FR1160923A FR2983148A1 FR 2983148 A1 FR2983148 A1 FR 2983148A1 FR 1160923 A FR1160923 A FR 1160923A FR 1160923 A FR1160923 A FR 1160923A FR 2983148 A1 FR2983148 A1 FR 2983148A1
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- Prior art keywords
- sealing layer
- mass
- spring
- layer
- component
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- 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
Abstract
Description
L'invention concerne un composant de protection acoustique pour véhicule automobile et un procédé de réalisation d'un tel composant. Il est connu de réaliser un composant de protection acoustique pour véhicule automobile, ledit composant comprenant une couche d'étanchéité de masse surfacique élevée disposée sur une couche élastiquement compressible, lesdites couches formant respectivement la masse et le ressort d'un système d'isolation de type masse-ressort. The invention relates to an acoustic protection component for a motor vehicle and a method for producing such a component. It is known to provide an acoustic protection component for a motor vehicle, said component comprising a high surface area sealing layer disposed on an elastically compressible layer, said layers respectively forming the mass and the spring of an insulation system. mass-spring type.
La couche d'étanchéité est notamment à base de matériau de type polyoléfine élastomère - notamment de l'éthylène propylène diène monomère (EPDM) chargé avec une charge minérale comme la calcite ou la baryte, ladite charge permettant d'augmenter sa densité, ceci en vue d'optimiser les propriétés d'isolation acoustique du composant. The sealing layer is in particular based on elastomer polyolefin material - in particular ethylene propylene diene monomer (EPDM) loaded with a mineral filler such as calcite or baryte, said filler making it possible to increase its density, this being to optimize the acoustic insulation properties of the component.
Généralement, on réalise par extrusion une plaque qui est découpée pour former la couche d'étanchéité, cette dernière étant éventuellement conformée par thermoformage pour présenter une géométrie tridimensionnelle, notamment non développable. On peut aussi prévoir de faire un moulage par injection du matériau destiné à constituer la couche d'étanchéité, sachant qu'une telle technologie requiert une bonne fluidité de la matière, une telle fluidité étant incompatible avec une trop forte charge minérale. Une telle fluidité est également requise - dans une moindre mesure - pour l'extrusion. Les matériaux chargés usuellement utilisés présentent une élasticité 30 relativement faible, ce qui limite leur capacité à être thermoformé avec de fortes déformations. Il en résulte une restriction des possibilités de formes que peuvent présenter les composants. 25 L'invention a pour but de pallier ces inconvénients. A cet effet, et selon un premier aspect, l'invention propose un composant de protection acoustique pour véhicule automobile, ledit composant comprenant une couche d'étanchéité de masse surfacique élevée disposée sur une couche élastiquement compressible, lesdites couches formant respectivement la masse et le ressort d'un système d'isolation de type masse-ressort, ladite couche d'étanchéité étant à base de polyvinyle butyral (PVB). Generally, a plate is produced by extrusion which is cut to form the sealing layer, the latter being optionally shaped by thermoforming to present a three-dimensional geometry, in particular non-developable. It is also possible to make an injection molding of the material intended to form the sealing layer, knowing that such a technology requires a good fluidity of the material, such fluidity being incompatible with too much mineral filler. Such fluidity is also required - to a lesser extent - for extrusion. The loaded materials usually used have a relatively low elasticity, which limits their ability to be thermoformed with high deformations. This results in a restriction of the possibilities of shapes that can present the components. The object of the invention is to overcome these disadvantages. For this purpose, and according to a first aspect, the invention provides an acoustic protection component for a motor vehicle, said component comprising a high surface density sealing layer disposed on an elastically compressible layer, said layers respectively forming the mass and the spring of a mass-spring type insulation system, said sealing layer being based on polyvinyl butyral (PVB).
Une utilisation classique du PVB consiste à l'interposer en film entre deux couches de verre, notamment pour réaliser des pare brise de véhicules automobiles ou des vitres d'immeubles. Une caractéristique de cette matière est son élasticité très importante qui permet de retenir le verre cassé et qui évite aux couches de verre de voler en éclats lors d'un choc. Une telle élasticité permet d'envisager son thermoformage avec de forts étirements. A conventional use of PVB is to interpose it in film between two layers of glass, in particular to make windshields of motor vehicles or windows of buildings. A characteristic of this material is its very high elasticity which makes it possible to retain the broken glass and which prevents the layers of glass from shattering during an impact. Such elasticity allows to consider its thermoforming with strong stretching.
En outre, le PVB présente la particularité d'avoir une densité de l'ordre de 1,1 sachant que la densité de l'EPDM est de l'ordre de 0,86. Il en résulte qu'une même densité de couche d'étanchéité requiert moins de charge pour un PVB que pour un EPDM, ce qui facilite la mise en oeuvre d'un moulage par injection ou d'une extrusion avec un PVB. Selon un deuxième aspect, l'invention propose un procédé de réalisation d'un tel composant, ledit procédé comprenant l'étape de séparer le polyvinyle butyral compris dans un verre feuilleté destiné au recyclage afin de réaliser la couche d'étanchéité. In addition, PVB has the particularity of having a density of about 1.1 knowing that the density of the EPDM is of the order of 0.86. As a result, the same seal layer density requires less charge for PVB than for EPDM, which facilitates injection molding or extrusion with PVB. According to a second aspect, the invention proposes a process for producing such a component, said process comprising the step of separating the polyvinyl butyral included in a laminated glass intended for recycling in order to produce the sealing layer.
Un intérêt majeur de déployer un tel procédé est que le PVB recyclé ne présente pas une qualité satisfaisante pour être réutilisé dans la fabrication de verre feuilleté. A major advantage of deploying such a method is that the recycled PVB does not have a satisfactory quality to be reused in the manufacture of laminated glass.
Avec l'utilisation proposée, on dispose d'une filière de recyclage pour le PVB dont les déchets de recyclage ne sont pas exploités à ce jour. D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence à la figure jointe qui est une vue schématique en coupe partielle d'un composant selon une réalisation. En référence à la figure, on décrit un composant 1 de protection acoustique pour véhicule automobile, ledit composant comprenant une couche d'étanchéité 2 de masse surfacique élevée disposée sur une couche élastiquement compressible 3, lesdites couches formant respectivement la masse et le ressort d'un système d'isolation de type masse-ressort, ladite couche d'étanchéité étant à base de polyvinyle butyral (PVB). Par « masse surfacique élevée », on entend par exemple une masse surfacique comprise entre 2 et 5 kg/m2, cette fourchette de valeurs étant indicative. Selon une réalisation, la couche d'étanchéité 2 comprend une dispersion de charge minérale. With the proposed use, there is a recycling pipeline for PVB whose recycling waste is not exploited to date. Other features and advantages of the invention will appear in the description which follows, made with reference to the attached figure which is a schematic partial sectional view of a component according to one embodiment. Referring to the figure, there is described a component 1 acoustic protection for a motor vehicle, said component comprising a sealing layer 2 of high mass per unit area disposed on an elastically compressible layer 3, said layers respectively forming the mass and the spring of a mass-spring type insulation system, said sealing layer being based on polyvinyl butyral (PVB). By "high surface density" is meant for example a basis weight of between 2 and 5 kg / m 2, this range of values being indicative. In one embodiment, the sealing layer 2 comprises a mineral filler dispersion.
Selon une réalisation, la couche d'étanchéité 2 présente une densité comprise entre 1,1 et 2. Selon une réalisation, le composant 1 comprend en outre, disposé sur la couche d'étanchéité 2 à l'opposé de la couche compressible 3, une couche poreuse 4 d'absorption acoustique, par exemple sous forme de moquette. Selon une réalisation, la couche compressible 3 est à base de mousse flexible - notamment de polyuréthanne - surmoulant la couche d'étanchéité 2. According to one embodiment, the sealing layer 2 has a density of between 1.1 and 2. According to one embodiment, the component 1 further comprises disposed on the sealing layer 2 opposite the compressible layer 3, a porous acoustic absorption layer 4, for example in the form of carpet. According to one embodiment, the compressible layer 3 is based on flexible foam - in particular polyurethane - over-molding the sealing layer 2.
En variante, la couche compressible 3 est à base de feutre. Selon une réalisation, la couche d'étanchéité 2 est conformée de façon non développable, notamment par thermoformage. On décrit à présent un procédé de réalisation d'un composant 1, ledit procédé comprenant l'étape de séparer le polyvinyle butyral compris dans un verre feuilleté destiné au recyclage afin de réaliser la couche d'étanchéité 2. In a variant, the compressible layer 3 is based on felt. According to one embodiment, the sealing layer 2 is shaped in a non-developable manner, in particular by thermoforming. A method of producing a component 1 is now described, said method comprising the step of separating the polyvinyl butyral included in a laminated glass intended for recycling in order to produce the sealing layer 2.
Selon une réalisation, le procédé comprend une étape d'extrusion pour réaliser la couche d'étanchéité 2. Dans ce cas, le procédé peut comprendre en outre une étape de thermoformage pour obtenir la couche d'étanchéité 2. En variante, le procédé comprend l'étape de réaliser la couche d'étanchéité 2 par moulage par injection, ce qui permet de lui conférer directement une géométrie complexe.20 According to one embodiment, the method comprises an extrusion step for producing the sealing layer 2. In this case, the method may further comprise a thermoforming step to obtain the sealing layer 2. In a variant, the method comprises the step of producing the sealing layer 2 by injection molding, which makes it possible to directly give it a complex geometry.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR1160923A FR2983148B1 (en) | 2011-11-29 | 2011-11-29 | ACOUSTIC PROTECTION COMPONENT FOR A MOTOR VEHICLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR1160923A FR2983148B1 (en) | 2011-11-29 | 2011-11-29 | ACOUSTIC PROTECTION COMPONENT FOR A MOTOR VEHICLE |
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FR2983148A1 true FR2983148A1 (en) | 2013-05-31 |
FR2983148B1 FR2983148B1 (en) | 2014-01-10 |
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FR1160923A Expired - Fee Related FR2983148B1 (en) | 2011-11-29 | 2011-11-29 | ACOUSTIC PROTECTION COMPONENT FOR A MOTOR VEHICLE |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016146919A1 (en) * | 2015-03-19 | 2016-09-22 | Cera Aps | Thermoformed sound protection element for a motor vehicle |
FR3033734A1 (en) * | 2015-03-19 | 2016-09-23 | Cera Aps | THERMOFORMING MEMBER FOR TRIM AND ACOUSTIC PROTECTION FOR MOTOR VEHICLE |
CN106274731A (en) * | 2016-08-29 | 2017-01-04 | 山东三岭汽车内饰有限公司 | A kind of inner lining of automobile device that can realize personalized layout |
FR3054166A1 (en) * | 2016-07-22 | 2018-01-26 | Cera Aps | METHOD FOR PRODUCING A FILLING MEMBER AND ACOUSTIC PROTECTION OF A WALL OF A MOTOR VEHICLE |
FR3094259A1 (en) * | 2019-03-29 | 2020-10-02 | Treves Products, Services & Innovation | Method of producing a heavy and waterproof layer for an acoustic protection screen for a motor vehicle |
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EP0077987A1 (en) * | 1981-10-24 | 1983-05-04 | Nissan Motor Co., Ltd. | Vibration damper of constrained laminate type |
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US20100249253A1 (en) * | 2008-03-27 | 2010-09-30 | Claudio Fernandez Acevedo | Method for the recycling of polyvinyl butyral |
EP2365483A1 (en) * | 2010-03-09 | 2011-09-14 | Rieter Technologies AG | Automotive insulating trim part |
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2011
- 2011-11-29 FR FR1160923A patent/FR2983148B1/en not_active Expired - Fee Related
Patent Citations (7)
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EP0077987A1 (en) * | 1981-10-24 | 1983-05-04 | Nissan Motor Co., Ltd. | Vibration damper of constrained laminate type |
US6132882A (en) * | 1996-12-16 | 2000-10-17 | 3M Innovative Properties Company | Damped glass and plastic laminates |
US20080196971A1 (en) * | 2005-07-07 | 2008-08-21 | Faurecia Automotive Industrie | Soundproofing Assembly, Use For Soundproofing Enclosed Spaces, And Method for Making Same |
US20070154694A1 (en) * | 2005-12-30 | 2007-07-05 | Samuels Sam L | Multilayer polymeric laminates and high strength laminates produced therefrom |
EP2053593A2 (en) * | 2007-10-23 | 2009-04-29 | Centre d'Etude et de Recherche pour l'Automobile (CERA) | Acoustic protection complex comprising a compregnated porous layer |
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Non-Patent Citations (1)
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WEI J ET AL: "Response of laminated architectural glazing subjected to blast loading", INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, PERGAMON, GB, vol. 32, no. 12, 1 December 2006 (2006-12-01), pages 2032 - 2047, XP028005845, ISSN: 0734-743X, [retrieved on 20061201], DOI: 10.1016/J.IJIMPENG.2005.05.012 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016146919A1 (en) * | 2015-03-19 | 2016-09-22 | Cera Aps | Thermoformed sound protection element for a motor vehicle |
FR3033733A1 (en) * | 2015-03-19 | 2016-09-23 | Cera Aps | ACOUSTIC PROTECTION THERMOFORMING ELEMENT FOR MOTOR VEHICLE |
FR3033734A1 (en) * | 2015-03-19 | 2016-09-23 | Cera Aps | THERMOFORMING MEMBER FOR TRIM AND ACOUSTIC PROTECTION FOR MOTOR VEHICLE |
FR3054166A1 (en) * | 2016-07-22 | 2018-01-26 | Cera Aps | METHOD FOR PRODUCING A FILLING MEMBER AND ACOUSTIC PROTECTION OF A WALL OF A MOTOR VEHICLE |
CN106274731A (en) * | 2016-08-29 | 2017-01-04 | 山东三岭汽车内饰有限公司 | A kind of inner lining of automobile device that can realize personalized layout |
CN106274731B (en) * | 2016-08-29 | 2018-07-24 | 山东三岭汽车内饰有限公司 | A kind of inner lining of automobile device that personalized arrangement may be implemented |
FR3094259A1 (en) * | 2019-03-29 | 2020-10-02 | Treves Products, Services & Innovation | Method of producing a heavy and waterproof layer for an acoustic protection screen for a motor vehicle |
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FR2983148B1 (en) | 2014-01-10 |
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