EP1521895A1 - Sound-insulating glazing with thermoviscous losses - Google Patents

Sound-insulating glazing with thermoviscous losses

Info

Publication number
EP1521895A1
EP1521895A1 EP03753633A EP03753633A EP1521895A1 EP 1521895 A1 EP1521895 A1 EP 1521895A1 EP 03753633 A EP03753633 A EP 03753633A EP 03753633 A EP03753633 A EP 03753633A EP 1521895 A1 EP1521895 A1 EP 1521895A1
Authority
EP
European Patent Office
Prior art keywords
cavity
micro
substrate
glazing according
sheets
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.)
Withdrawn
Application number
EP03753633A
Other languages
German (de)
French (fr)
Inventor
Béatrice MOTTELET
Marc Rehfeld
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.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP1521895A1 publication Critical patent/EP1521895A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6707—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased acoustical insulation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/6612—Evacuated glazing units

Definitions

  • the present invention relates to glazing with improved acoustic insulation performance.
  • Insulating glass is commonly used in the building to improve the thermal insulation of premises.
  • the glazings in question comprise two sheets of glass generally of different thickness, associated by means of an intermediate frame which keeps them at a certain distance from each other by trapping between them a blade of a gas, such as the air.
  • Various means have so far been proposed for improving the acoustic performance of insulating glazing, as has been reported in international PCT application WO 00/75473.
  • These means may in particular consist of a waveguide which is arranged at the periphery of the glazing and which communicates with the air gap by several orifices whose shape, section and position are determined so as to detune the acoustic waves and mechanical which arise respectively in the air space and on the glass sheets when the glazing is subjected to an incident sound field.
  • an acoustic insulating double glazing comprising internally, in order to improve the acoustic performance, an additional profile attached to the peripheral intermediate frame via 'an elastic bond.
  • the Applicant Company sought to further improve the acoustic performance of such glazing and it has developed a new type of profile configuration attached to an intermediate frame or associated with it, this profile forming against the walls of transparent substrate micro-cavities in which the acoustic waves are caused to "exhaust" by friction against their facing walls, causing losses thermo-viscous, that is to say transforming waves into heat energy and, by. there, decreasing the acoustic energy.
  • the glazings according to the present invention can thus be qualified as glazings "with a thermo-viscous loss effect" and, as the results indicated below show, allow significant improvements in acoustic performance.
  • the present invention therefore firstly relates to an acoustic insulating glazing comprising at least two sheets of substrate, assembled at their periphery using a device forming a tight seal and intermediate frame, which defines with the two sheets of substrate a flat cavity filled with a gas, characterized in that, on at least part of the periphery of said cavity, is formed at least one micro-cavity constituting an area of thermo-viscous losses from said cavity along '' at least one of the internal walls of the two sheets of substrate delimiting said cavity, the dimensions of a micro-cavity being chosen to favor the propagation of part of the acoustic waves from the cavity towards the micro-cavity, generating thermo-viscous losses and thus reducing the acoustic energy of said cavity, means being provided for containing the acoustic waves escaping from said micro-cavity.
  • part of the acoustic waves of a glazing cavity is absorbed mainly in the medium and high frequencies.
  • a micro-cavity is advantageously in the form of a thin blade whose width is between 0.2 mm and 1 mm limits included and the useful height is at least equal to 6 mm, preferably at least equal to 11 mm .
  • the thickness of a micro-cavity is greater than a millimeter, the expected effect of reducing the acoustic energy of the cavity will not be obtained. It is moreover important that the useful height of the microcavity is sufficient so that the friction surface of the acoustic wave is made large, leading to the thermo-viscous losses which are estimated to be the cause of the reduction in acoustic energy. It should however be emphasized that the increase in the useful height of the micro-cavity will be limited by the need to keep an acceptable view in the case of transparent glazing.
  • At least one micro-cavity is formed on at least one face and at least one of the sides of the glazing; in particular, provision may be made for at least one micro-cavity to be formed on each of the faces of the glazing, in particular over the entire periphery of the latter.
  • a micro-cavity is formed between the internal wall of a substrate sheet and a wall opposite a profile disposed at the internal periphery of the cavity and delimiting an internal chamber in communication with the microcavity by at least one opening in said wall of the profile, said chamber for containing the acoustic wave's escaping from the micro-cavity.
  • an opening is formed by a continuous or discontinuous longitudinal slot over the entire length of a profile. We prefer a discontinuous slot to maintain the rigidity of the profile.
  • the slot (s) will be arranged in the lower part of the profile opposite the cavity, namely, as close as possible to the bottom of the micro-cavities in order to maximize the useful height of the micro-cavity and therefore the surfaces friction.
  • useful height of a micro-cavity means "the distance between the upper plane of the slot and that where the micro-cavity opens into the cavity.
  • a slot could for example have a height of the order of 1 mm.
  • the slots have the role of ensuring a natural circulation of the gas (air) to force it to enter the microcavity. This circulation is improved if a configuration is provided with microcavities on each face of the glazing, which represents a preferred embodiment.
  • the profile is advantageously constituted by an element having a section at least in a U whose bottom in contact with the cavity filled with gas and the wings delimit the interior chamber and the wings each delimit a micro-cavity with the wall facing the substrate and cooperate at their base with the device forming a seal and an intermediate frame.
  • the device forming a waterproof seal and intermediate frame is constituted by a frame having a bottom in contact with a peripheral sealing joint adhering to the internal edges of the two facing sheets of substrate, and wings arranged facing the sheets of substrate with interposition of a bonding and sealing bead, continuous or discontinuous, the U-shaped profile for forming micro-cavities being attached to said intermediate frame or being formed in one piece with it, in which case the wings of the intermediate frame extend to form those of said U-shaped profile.
  • the device forming a tight seal and intermediate frame is constituted by a peripheral strip adhering to the edges of the two sheets of substrate, the U-shaped profile for forming micro-cavities being attached to said strip.
  • the substrate sheets which form the double glazing or multiple glazing according to the present invention may consist of monolithic glass, laminated glass, or so-called “acoustic” laminated glass, that is to say that is to say incorporating, as an interlayer sheet situated between the glass sheets, at least one film of particular plastic materials having acoustic properties.
  • acoustic acoustic performance due to these films with acoustic properties will be added to those due to the configuration known as “with thermo-viscous loss effect” of the present invention.
  • Figure 1 is a schematic view in partial cross section in an edge region of a double glazing according to a first variant of the invention
  • Figures 2 and 3 are views similar to Figure 1 of n double glazing according to a second and a third variant of the invention, respectively
  • FIG. 4 represents the curves of the sound reduction index as a function of the frequency for different heights of microcavities and with respect to a reference glazing without microcavity.
  • acoustic insulating double glazing which includes two glass sheets 2, 3, of different thickness, which are kept separate by means of a peripheral device 4 forming a tight seal and intermediate frame, the sheets 2, 3 and the device 4 delimiting a flat cavity 5, tight, containing a gas such as air.
  • the device 4 consists of an intermediate frame 6 consisting of a profile which has two side walls ⁇ a, ⁇ b, each in contact with the facing glass sheet with the interposition of a longitudinal bead of bonding and sealing respectively 7a, 7b.
  • the bonding and sealing beads 7a, 7b are continuous.
  • the frame 6 can be metallic (for example aluminum) or composite material, and the bonding and sealing cords, for example butyl rubber.
  • the two side walls 6a, 6b are closed on the internal side by a front transverse wall 6c and on the external side by a transverse bottom wall 6d adhering to a plane peripheral sealing joint 8 made of polysulphide which is glued to the internal edges of the two sheets of glass 2 and 3 opposite.
  • the sealing joint provides, in addition to the gluing and mechanical holding function of the glazing, the functions of sealing against gases, dust and liquid water. Note that the water vapor tightness is ensured by the butyl cords 7a. 7b and by the presence of aluminum opposite 6d.
  • the two walls 6a, 6b of the profile 6 each have, parallel to the respective bonding and sealing bead 7a, 7b, a longitudinal slot 9a, 9b respectively, which can be continuous or discontinuous.
  • micro-cavity 5a and 5b having the shape of thin blades - opening into the cavity 5, the gas contained therein circulating through these micro-cavities 5a, 5b and through the slots 9a, 9b in the inner chamber 6e of the intermediate frame 6, which also constitutes the section known as “with thermo loss effect”. viscous "which is a feature of the present invention.
  • Thickness of the cavity 5 20 mm - Thickness of a bead 7a, 7b / width of a micro-cavity 5a, 5b: 0.2 mm
  • FIG. 1 There is symbolically shown in Figure 1, by arrow F, the path of a sound wave in the microcavity 5a.
  • the configuration of the present invention is such that the wave is encouraged to move in this micro-cavity by undergoing friction against the walls delimiting this micro-cavity, its acoustic energy decreasing thanks to these thermo-viscous losses.
  • FIG. 1 requires modifying the height of a typical intermediate frame, such as that which was used for the reference double glazing.
  • reference numbers 10 times greater than those used to designate similar elements in Figure 1 were used.
  • This variant differs from that of Figure 1 in that used a typical intermediate frame closed by a transverse wall 16f disposed in the plane of the upper edge of the cords 17a, 17b and that, on this frame, a section 16 has been added comprising a bottom 16c and two wings 16a, 16b comprising the slots respectively 19a, 19b.
  • Profile 16 can be attached to the typical intermediate frame by any means such as gluing, welding or coextrusion.
  • FIG. 3 To illustrate the alternative embodiment of Figure 3, reference numbers 20 times higher than those used to designate similar elements in Figure 1 were used.
  • This variant differs from that of Figure 1 in that the device 24 is limited to a peripheral strip 28 adhering to the edges of the two glass sheets 22 and 23, and that the U-shaped section 26, which comprises the bottom 26c and the wings 26a and 26b with the slots respectively 29a and 29b, is directly attached to the strip 28.
  • the strip 28 is for example made of aluminum and thus ensures total tightness.
  • the invention has been described for insulating glazing comprising at least two sheets of transparent glass substrate. It also applies to insulating glazing whose substrates are not necessarily transparent and / or glass, such as metal, polycarbonate, methacrylate substrates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to sound-insulating glazing comprising at least two sheets of substrate (2, 3) which are assembled at the periphery thereof using a device (4) forming a sealed joint and a spacer frame which, together with the two sheets of substrate (2, 3), forms a flat gas-filled cavity (5). The invention is characterised in that at least one micro-cavity (5a, 5b) is formed on at least one part of the edge of the aforementioned gas-filled cavity (5), thereby forming an area of thermoviscous losses from the cavity (5) along at least one of the inner walls of the two sheets of substrate (2, 3) defining said cavity (5). The dimensions of the micro-cavity (5a, 5b) are selected so as to encourage the propagation of part of the acoustic waves from the cavity (5) towards the micro-cavity, thus producing thermoviscous losses and reducing the acoustic energy of said cavity. In addition, means (6e) are provided in order to contain the acoustic waves leaving said micro-cavity (5a, 5b).

Description

VITRAGE ISOLANT ACOUSTIQUE A EFFET DE PERTES THERMOVISQUEUSES.SOUND INSULATING GLAZING WITH THERMOVISCOUS LOSS EFFECT.
La présente invention concerne un vitrage à performances d'isolation acoustique améliorée.The present invention relates to glazing with improved acoustic insulation performance.
On utilise couramment dans le bâtiment des vitrages isolants pour améliorer l'isolation thermique des locaux. Les vitrages en question comprennent deux feuilles de verre généralement d'épaisseur différente, associées au moyen d'un cadre intercalaire qui les maintient à une certaine distance l'une de l'autre en emprisonnant entre elles une lame d'un gaz, tel que l'air.Insulating glass is commonly used in the building to improve the thermal insulation of premises. The glazings in question comprise two sheets of glass generally of different thickness, associated by means of an intermediate frame which keeps them at a certain distance from each other by trapping between them a blade of a gas, such as the air.
Différents moyens ont été proposés jusqu'ici pour améliorer les performances acoustiques des vitrages isolants, comme cela a été rapporté dans la demande internationale PCT WO 00/75473. Ces moyens peuvent notamment consister en un guide d'onde qui est disposé à la périphérie du vitrage et qui communique avec la lame d'air par plusieurs orifices dont la forme, la section et la position sont déterminées de manière à désaccorder les ondes acoustiques et mécaniques qui naissent respectivement dans la lame d' air et sur les feuilles de verre lorsque le vitrage est soumis à un champ acoustique incident.Various means have so far been proposed for improving the acoustic performance of insulating glazing, as has been reported in international PCT application WO 00/75473. These means may in particular consist of a waveguide which is arranged at the periphery of the glazing and which communicates with the air gap by several orifices whose shape, section and position are determined so as to detune the acoustic waves and mechanical which arise respectively in the air space and on the glass sheets when the glazing is subjected to an incident sound field.
On connaît aussi, par la demande de brevet allemand DE-A-28 03 740, un double vitrage isolant acoustique comportant intérieurement, dans le but d'améliorer les performances acoustiques, un profil supplémentaire rapporté sur le cadre intercalaire périphérique par l'intermédiaire d'une liaison élastique. La Société déposante a recherché à améliorer encore les performances acoustiques de tels vitrages et elle a mis au point un nouveau type de configuration de profilé rapporté sur un cadre intercalaire ou associé avec lui, ce profilé formant contre les parois de substrat transparent des micro-cavités dans lesquelles les ondes acoustiques sont amenées à s' « épuiser » par frottement contre leurs parois en regard, provoquant des pertes thermo-visqueuses, c'est-à-dire transformant les ondes en énergie calorifique et, par . là, diminuant l'énergie acoustique. Les vitrages selon la présente invention peuvent ainsi être qualifiés de vitrages « à effet de pertes thermo-visqueuses » et, comme le montrent les résultats indiqués ci-après, permettent des améliorations notables des performances acoustiques.Also known, from German patent application DE-A-28 03 740, an acoustic insulating double glazing comprising internally, in order to improve the acoustic performance, an additional profile attached to the peripheral intermediate frame via 'an elastic bond. The Applicant Company sought to further improve the acoustic performance of such glazing and it has developed a new type of profile configuration attached to an intermediate frame or associated with it, this profile forming against the walls of transparent substrate micro-cavities in which the acoustic waves are caused to "exhaust" by friction against their facing walls, causing losses thermo-viscous, that is to say transforming waves into heat energy and, by. there, decreasing the acoustic energy. The glazings according to the present invention can thus be qualified as glazings "with a thermo-viscous loss effect" and, as the results indicated below show, allow significant improvements in acoustic performance.
La présente invention a donc d'abord pour objet un vitrage isolant acoustique comportant au moins deux feuilles de substrat , assemblées à leur périphérie à l'aide d'un dispositif formant joint étanche et cadre intercalaire, qui définit avec les deux feuilles de substrat une cavité plate remplie d'un gaz, caractérisé par le fait que, sur au moins une partie de la périphérie de ladite cavité, est formée au moins une micro-cavité constituant une zone de pertes thermo-visqueuses à partir de ladite cavité le long d'au moins l'une des parois internes des deux feuilles de substrat délimitant ladite cavité, les dimensions d'une micro-cavité étant choisies pour favoriser la propagation d'une partie des ondes acoustiques depuis la cavité vers la micro-cavité, engendrant des pertes thermo-visqueuses et diminuant ainsi l'énergie acoustique de ladite cavité, des moyens étant prévus pour contenir les ondes acoustiques s' échappant- de ladite micro-cavité.The present invention therefore firstly relates to an acoustic insulating glazing comprising at least two sheets of substrate, assembled at their periphery using a device forming a tight seal and intermediate frame, which defines with the two sheets of substrate a flat cavity filled with a gas, characterized in that, on at least part of the periphery of said cavity, is formed at least one micro-cavity constituting an area of thermo-viscous losses from said cavity along '' at least one of the internal walls of the two sheets of substrate delimiting said cavity, the dimensions of a micro-cavity being chosen to favor the propagation of part of the acoustic waves from the cavity towards the micro-cavity, generating thermo-viscous losses and thus reducing the acoustic energy of said cavity, means being provided for containing the acoustic waves escaping from said micro-cavity.
Conformément à la présente invention, une partie des ondes acoustiques d'une cavité du vitrage est absorbée principalement dans les moyennes et hautes fréquences.According to the present invention, part of the acoustic waves of a glazing cavity is absorbed mainly in the medium and high frequencies.
Une micro-cavité se présente avantageusement sous la forme d'une lame mince dont la largeur est comprise entre 0,2 mm et 1 mm bornes incluses et la hauteur utile est au moins égale à 6 mm, de préférence au moins égale à 11 mm.A micro-cavity is advantageously in the form of a thin blade whose width is between 0.2 mm and 1 mm limits included and the useful height is at least equal to 6 mm, preferably at least equal to 11 mm .
Si l'épaisseur d'une micro-cavité est supérieure au millimètre, on n'obtiendra pas l'effet attendu de diminution de l'énergie acoustique de la cavité. Il est par ailleurs important que la hauteur utile de la microcavité soit suffisante afin que la surface de frottement de l'onde acoustique soit rendue importante, conduisant aux pertes thermo-visqueuses qui sont estimées être la cause de la diminution de l'énergie acoustique. Il faut cependant souligner que l'augmentation de la hauteur utile de la micro-cavité sera limitée par la nécessité de conserver un clair de vue acceptable dans le cas d'un vitrage transparent . Conformément à un mode de réalisation intéressant de la présente invention, au moins une micro-cavité est formée sur au moins une face et au moins l'un des côtés du vitrage ; en particulier, on pourra prévoir qu'au moins une micro-cavité soit formée sur chacune des faces du vitrage, notamment sur toute la périphérie de ce dernier.If the thickness of a micro-cavity is greater than a millimeter, the expected effect of reducing the acoustic energy of the cavity will not be obtained. It is moreover important that the useful height of the microcavity is sufficient so that the friction surface of the acoustic wave is made large, leading to the thermo-viscous losses which are estimated to be the cause of the reduction in acoustic energy. It should however be emphasized that the increase in the useful height of the micro-cavity will be limited by the need to keep an acceptable view in the case of transparent glazing. According to an advantageous embodiment of the present invention, at least one micro-cavity is formed on at least one face and at least one of the sides of the glazing; in particular, provision may be made for at least one micro-cavity to be formed on each of the faces of the glazing, in particular over the entire periphery of the latter.
Dans une forme de réalisation particulière, une micro-cavité est formée entre la paroi interne d'une feuille de substrat et une paroi en regard d'un profilé disposé à la périphérie interne de la cavité et délimitant une chambre intérieure en communication avec la microcavité par au moins une ouverture pratiquée dans ladite paroi du profilé, ladite chambre permettant de contenir les ondes acoustiques' s' échappant de la micro-cavité. En particulier, une ouverture est constituée par une fente longitudinale continue ou discontinue sur toute la longueur d'un profilé. On préférera une fente discontinue pour maintenir la rigidité du profilé.In a particular embodiment, a micro-cavity is formed between the internal wall of a substrate sheet and a wall opposite a profile disposed at the internal periphery of the cavity and delimiting an internal chamber in communication with the microcavity by at least one opening in said wall of the profile, said chamber for containing the acoustic wave's escaping from the micro-cavity. In particular, an opening is formed by a continuous or discontinuous longitudinal slot over the entire length of a profile. We prefer a discontinuous slot to maintain the rigidity of the profile.
La ou les fentes seront disposées dans la partie inférieure du profilé à l'opposé de la cavité, à savoir, le plus près possible du fond des micro-cavités afin de rendre maximales la hauteur utile de la micro-cavité et par conséquent les surfaces de frottement. On comprendra que l'on entend par « hauteur utile » d'une micro-cavité," la distance entre le plan supérieur de la fente et celui où la micro-cavité débouche dans la cavité. Une fente pourra par exemple avoir une hauteur de l'ordre de 1 mm.The slot (s) will be arranged in the lower part of the profile opposite the cavity, namely, as close as possible to the bottom of the micro-cavities in order to maximize the useful height of the micro-cavity and therefore the surfaces friction. It will be understood that the term "useful height" of a micro-cavity means " the distance between the upper plane of the slot and that where the micro-cavity opens into the cavity. A slot could for example have a height of the order of 1 mm.
Les fentes ont pour rôle d'assurer une circulation naturelle du gaz (air) pour forcer celui-ci à pénétrer dans la microcavité. Cette circulation est améliorée si l'on a prévu une configuration avec des microcavités sur chaque face du vitrage, ce qui représente un mode de réalisation préféré.The slots have the role of ensuring a natural circulation of the gas (air) to force it to enter the microcavity. This circulation is improved if a configuration is provided with microcavities on each face of the glazing, which represents a preferred embodiment.
Ainsi, le profilé est avantageusement constitué par un élément présentant une section au moins en U dont le fond en contact avec la cavité remplie de gaz et les ailes délimitent la chambre intérieure et les ailes délimitent chacune une micro-cavité avec la paroi en regard du substrat et coopèrent par leur base avec le dispositif formant joint étanche et cadre intercalaire.Thus, the profile is advantageously constituted by an element having a section at least in a U whose bottom in contact with the cavity filled with gas and the wings delimit the interior chamber and the wings each delimit a micro-cavity with the wall facing the substrate and cooperate at their base with the device forming a seal and an intermediate frame.
Conformément à une variante, le dispositif formant joint étanche et cadre intercalaire est constitué par un cadre présentant un fond en contact avec un joint de scellement périphérique adhérant aux bords internes des deux feuilles de substrat en regard, et des ailes disposées en regard des feuilles de substrat avec interposition d'un cordon de collage et d' étanchéité, continu ou discontinu, le profilé en U de formation des micro-cavités étant rapporté sur ledit cadre intermédiaire ou étant formé d'une seule pièce avec lui, auquel cas les ailes du cadre intermédiaire se prolongent pour former celles dudit profilé en U.According to one variant, the device forming a waterproof seal and intermediate frame is constituted by a frame having a bottom in contact with a peripheral sealing joint adhering to the internal edges of the two facing sheets of substrate, and wings arranged facing the sheets of substrate with interposition of a bonding and sealing bead, continuous or discontinuous, the U-shaped profile for forming micro-cavities being attached to said intermediate frame or being formed in one piece with it, in which case the wings of the intermediate frame extend to form those of said U-shaped profile.
Conformément à une autre variante, le dispositif formant joint étanche et cadre intercalaire est constitué par un feuillard périphérique adhérant aux tranches des deux feuilles de substrat, le profilé en U de formation des micro-cavités étant rapporté sur ledit feuillard.According to another variant, the device forming a tight seal and intermediate frame is constituted by a peripheral strip adhering to the edges of the two sheets of substrate, the U-shaped profile for forming micro-cavities being attached to said strip.
Les feuilles de substrat qui forment les doubles vitrages ou vitrages multiples selon la présente invention peuvent être constituées de verre monolithique, de verre feuilleté, ou de verre feuilleté dit « acoustique », c'est- à-dire incorporant, comme feuille intercalaire située entre les feuilles de verre, au moins un film de matières plastiques particulières ayant des propriétés acoustiques. Dans ce cas, les performances acoustiques dues à ces films à propriétés acoustiques s'ajouteront à celles dues à la configuration dite « à effet de pertes thermo-visqueuses » de la présente invention.The substrate sheets which form the double glazing or multiple glazing according to the present invention may consist of monolithic glass, laminated glass, or so-called “acoustic” laminated glass, that is to say that is to say incorporating, as an interlayer sheet situated between the glass sheets, at least one film of particular plastic materials having acoustic properties. In this case, the acoustic performances due to these films with acoustic properties will be added to those due to the configuration known as “with thermo-viscous loss effect” of the present invention.
Pour mieux illustrer l'objet de la présente invention, on va maintenant en décrire des modes de réalisation particuliers avec référence aux dessins annexés sur lesquels : la Figure 1 est une vue schématique en coupe transversale partielle dans une région de bordure d'un double vitrage conforme à une première variante de l'invention ; les Figures 2 et 3 sont des vues analogues à la Figure 1 d' n double vitrage conforme respectivement à une seconde et à une troisième variante de l'invention ; et la Figure 4 représente les courbes de l'indice d'affaiblissement acoustique en fonction de la fréquence pour différentes hauteurs de micro-cavités et par rapport à un vitrage de référence sans microcavité.To better illustrate the object of the present invention, we will now describe particular embodiments with reference to the accompanying drawings in which: Figure 1 is a schematic view in partial cross section in an edge region of a double glazing according to a first variant of the invention; Figures 2 and 3 are views similar to Figure 1 of n double glazing according to a second and a third variant of the invention, respectively; and FIG. 4 represents the curves of the sound reduction index as a function of the frequency for different heights of microcavities and with respect to a reference glazing without microcavity.
Si l'on se réfère à la Figure 1, on peut voir que l'on a désigné par 1 dans son ensemble un double vitrage isolant acoustique, qui comprend deux feuilles de verre 2, 3, d'épaisseur différente, qui sont maintenues séparées au moyen d'un dispositif périphérique 4 formant joint étanche et cadre intercalaire, les feuilles 2, 3 et le dispositif 4 délimitant une cavité plate 5 , étanche, contenant un gaz tel que l'air.If one refers to Figure 1, one can see that one designated by 1 in its entirety an acoustic insulating double glazing, which includes two glass sheets 2, 3, of different thickness, which are kept separate by means of a peripheral device 4 forming a tight seal and intermediate frame, the sheets 2, 3 and the device 4 delimiting a flat cavity 5, tight, containing a gas such as air.
Le dispositif 4 se compose d'un cadre intercalaire 6 consistant en un profilé qui comporte deux parois latérales βa, βb, chacune en contact avec la feuille de verre en regard avec interposition d'un cordon longitudinal de collage et d' étanchéité respectivement 7a, 7b. Les cordons de collage et d' étanchéité 7a, 7b sont continus .The device 4 consists of an intermediate frame 6 consisting of a profile which has two side walls βa, βb, each in contact with the facing glass sheet with the interposition of a longitudinal bead of bonding and sealing respectively 7a, 7b. The bonding and sealing beads 7a, 7b are continuous.
Le cadre 6 peut être métallique (par exemple en aluminium) ou en matière composite, et les cordons de collage et d' étanchéité, en caoutchouc butyle par exemple. Les deux parois latérales 6a, 6b sont fermées du côté interne par une paroi transversale avant 6c et du côté externe par une paroi transversale de fond 6d adhérant à un joint de scellement périphérique plan 8 en polysulfure qui est collé aux bordures internes des deux feuilles de verre 2 et 3 en regard. Le joint de scellement assure outre la fonction de collage et de maintien mécanique du vitrage, les fonctions d' étanchéité aux gaz, poussières et à l'eau liquide. Notons que l' étanchéité à la vapeur d'eau est assurée par les cordons de butyle 7a. 7b et par la présence d'aluminium en face 6d.The frame 6 can be metallic (for example aluminum) or composite material, and the bonding and sealing cords, for example butyl rubber. The two side walls 6a, 6b are closed on the internal side by a front transverse wall 6c and on the external side by a transverse bottom wall 6d adhering to a plane peripheral sealing joint 8 made of polysulphide which is glued to the internal edges of the two sheets of glass 2 and 3 opposite. The sealing joint provides, in addition to the gluing and mechanical holding function of the glazing, the functions of sealing against gases, dust and liquid water. Note that the water vapor tightness is ensured by the butyl cords 7a. 7b and by the presence of aluminum opposite 6d.
Les deux parois 6a, 6b du profilé 6 comportent chacune, parallèlement au cordon de collage et d' étanchéité respectif 7a, 7b, une fente longitudinale respectivement 9a, 9b, qui peut être continue ou discontinue.The two walls 6a, 6b of the profile 6 each have, parallel to the respective bonding and sealing bead 7a, 7b, a longitudinal slot 9a, 9b respectively, which can be continuous or discontinuous.
Il est ainsi constitué entre la feuille de verre 2 et la paroi 6a une micro-cavité 5a et entre la feuille de verre 3 et la paroi 6b une micro-cavité 5b, les microcavités 5a et 5b ayant la forme de lames minces- débouchant dans la cavité 5, le gaz contenu dans celle-ci circulant par ces micro-cavités 5a, 5b et par les fentes 9a, 9b dans la chambre intérieure 6e du cadre intercalaire 6, lequel constitue également le profilé dit « à effet de pertes thermo-visqueuses » qui constitue une caractéristique de la présente invention.There is thus formed between the glass sheet 2 and the wall 6a a micro-cavity 5a and between the glass sheet 3 and the wall 6b a micro-cavity 5b, the microcavities 5a and 5b having the shape of thin blades - opening into the cavity 5, the gas contained therein circulating through these micro-cavities 5a, 5b and through the slots 9a, 9b in the inner chamber 6e of the intermediate frame 6, which also constitutes the section known as “with thermo loss effect”. viscous "which is a feature of the present invention.
La représentation schématique de la Figure 1 n'est pas à l'échelle ; on indiquera ci-après les dimensions caractéristiques principales :The schematic representation of Figure 1 is not to scale; the main characteristic dimensions will be indicated below:
- Epaisseur de la feuille de verre 2 : 4 mm - Epaisseur de la feuille de verre 3 : 6 mm- Thickness of the glass sheet 2: 4 mm - Thickness of the glass sheet 3: 6 mm
- Epaisseur de la cavité 5 : 20 mm - Epaisseur d'un cordon 7a, 7b / largeur d'une micro-cavité 5a, 5b : 0,2 mm- Thickness of the cavity 5: 20 mm - Thickness of a bead 7a, 7b / width of a micro-cavity 5a, 5b: 0.2 mm
- Distance entre les parois 6c et 6d : 20 mm- Distance between walls 6c and 6d: 20 mm
- Distance entre la paroi 6c et la bordure supérieure d'une fente 9a, 9b / hauteur utile d'une micro-cavité 5a, 5b : 15 m- Distance between the wall 6c and the upper edge of a slot 9a, 9b / useful height of a micro-cavity 5a, 5b: 15 m
On a représenté symboliquement sur la Figure 1, par la flèche F, le trajet d'une onde sonore dans la microcavité 5a. La configuration de la présente invention est telle que l'onde est incitée à se déplacer dans cette micro-cavité en subissant un frottement contre les parois délimitant cette micro-cavité, son énergie acoustique diminuant grâce à ces pertes thermo-visqueuses.There is symbolically shown in Figure 1, by arrow F, the path of a sound wave in the microcavity 5a. The configuration of the present invention is such that the wave is encouraged to move in this micro-cavity by undergoing friction against the walls delimiting this micro-cavity, its acoustic energy decreasing thanks to these thermo-viscous losses.
A l'aide de mesures et de calculs, on a obtenu les indices d'affaiblissement acoustique en fonction de la fréquence pour des doubles vitrages conformes à la Figure 1 en faisant varier la hauteur utile des micro-cavités 5a, 5b : 4,5 mm ; 6 mm ; 11 mm et 16,5 mm, et en prenant comme référence un cadre intercalaire classique, sans fentes latérales, dont la paroi 6c se trouve dans le plan de la bordure supérieure des cordons 7a, 7b (réf = air) .Using measurements and calculations, the acoustic reduction indices as a function of the frequency were obtained for double glazing units according to Figure 1 by varying the useful height of the micro-cavities 5a, 5b: 4.5 mm; 6 mm; 11 mm and 16.5 mm, and taking as a reference a conventional intermediate frame, without side slits, the wall 6c of which lies in the plane of the upper edge of the cords 7a, 7b (ref = air).
A partir de ces courbes, on peut calculer les indices globaux de gain Ra,t et de gain Rw par rapport à la référence, conformément à la norme EN ISO 717 partie 1 :From these curves, we can calculate the global indices of gain Ra, t and gain R w compared to the reference, in accordance with standard EN ISO 717 part 1:
La variante de réalisation de la Figure 1 nécessite de modifier la hauteur d'un cadre intercalaire typique, tel que celui que l'on a utilisé pour le double vitrage de référence. Pour illustrer la variante de réalisation de la Figure 2, on a utilisé des chiffres de référence supérieurs de 10 à ceux utilisés pour désigner les éléments analogues sur la Figure 1. Cette variante diffère de celle de la Figure 1 par le fait que l'on a utilisé un cadre intercalaire typique fermé par une paroi transversale 16f disposée dans le plan de la bordure supérieure des cordons 17a, 17b et que, sur ce cadre, on a rapporté un profilé 16 comportant un fond 16c et deux ailes 16a, 16b comportant les fentes respectivement 19a, 19b. Le profilé 16 peut être rapporté sur le cadre intercalaire typique par tous moyens tels que collage, soudage ou coextrusion.The variant embodiment of FIG. 1 requires modifying the height of a typical intermediate frame, such as that which was used for the reference double glazing. To illustrate the alternative embodiment of Figure 2, reference numbers 10 times greater than those used to designate similar elements in Figure 1 were used. This variant differs from that of Figure 1 in that used a typical intermediate frame closed by a transverse wall 16f disposed in the plane of the upper edge of the cords 17a, 17b and that, on this frame, a section 16 has been added comprising a bottom 16c and two wings 16a, 16b comprising the slots respectively 19a, 19b. Profile 16 can be attached to the typical intermediate frame by any means such as gluing, welding or coextrusion.
Pour illustrer la variante de réalisation de la Figure 3, on a utilisé des chiffres de référence supérieurs de 20 à ceux utilisés pour désigner les éléments analogues sur la Figure 1. Cette variante diffère de celle de la Figure 1 par le fait que le dispositif 24 est limité à un feuillard périphérique 28 adhérant aux tranches des deux feuilles de verre 22 et 23, et que le profilé en U 26, qui comporte le fond 26c et les ailes 26a et 26b avec les fentes respectivement 29a et 29b, est directement rapporté sur le feuillard 28. Le feuillard 28 est par exemple en aluminium et permet ainsi d'assurer une étanchéité totale.To illustrate the alternative embodiment of Figure 3, reference numbers 20 times higher than those used to designate similar elements in Figure 1 were used. This variant differs from that of Figure 1 in that the device 24 is limited to a peripheral strip 28 adhering to the edges of the two glass sheets 22 and 23, and that the U-shaped section 26, which comprises the bottom 26c and the wings 26a and 26b with the slots respectively 29a and 29b, is directly attached to the strip 28. The strip 28 is for example made of aluminum and thus ensures total tightness.
Il est bien entendu que les modes de réalisation particuliers décrits ci-dessus ont été donnés à titre indicatif et non limitatif et que des modifications et variantes peuvent être apportées sans que l'on s'écarte pour autant du cadre de la présente invention.It is understood that the particular embodiments described above have been given by way of non-limiting indication and that modifications and variants can be made without departing from the scope of the present invention.
L'invention a été décrite pour un vitrage isolant comprenant au moins deux feuilles de substrat transparent verrier. Elle s'applique également à des vitrages isolants dont les substrats ne sont pas forcément transparents et/ou verriers, tels que des substrats en métal, polycarbonate, méthacrylate . The invention has been described for insulating glazing comprising at least two sheets of transparent glass substrate. It also applies to insulating glazing whose substrates are not necessarily transparent and / or glass, such as metal, polycarbonate, methacrylate substrates.

Claims

REVENDICATIONS
1 - Vitrage isolant acoustique comportant au moins deux feuilles de substrat (2, 3 ; 12, 13 ; 22, 23) , assemblées à leur périphérie à l'aide d'un dispositif (4 ; 14 ; 24) formant joint étanche et cadre intercalaire, qui définit avec les deux feuilles de substrat (2, 3 ; 12, 13 ; 22, 23), une cavité plate (5 ; 15 ; 25) remplie d'un gaz, caractérisé par le fait que, sur au moins une partie de la périphérie de ladite cavité (5 ; 15 ; 25) , est formée au moins une micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) , constituant une zone de pertes thermo-visqueuses à partir de ladite cavité (5 ; 15 ; 25) le long d'au moins l'une des parois internes des deux feuilles de substrat (2, 3 ; 12, 13 ; 22, 23) délimitant ladite cavité (5 ; 15 ; 25), les dimensions d'une micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) étant choisies pour favoriser la propagation d'une partie des ondes acoustiques de la cavité (5 ; 15 ; 25) vers la micro-cavité, engendrant des pertes thermo- visqueuses et diminuant ainsi l'énergie acoustique de ladite cavité; des moyens (6e ; 16e ; 26e étant prévus pour contenir les ondes acoustiques s'échappant de ladite micro-cavité (5a, '5b ; 15a, 15b ; 25a, 25b) .1 - Acoustic insulating glazing comprising at least two sheets of substrate (2, 3; 12, 13; 22, 23), assembled at their periphery using a device (4; 14; 24) forming a tight seal and frame interlayer, which defines with the two substrate sheets (2, 3; 12, 13; 22, 23), a flat cavity (5; 15; 25) filled with a gas, characterized in that, on at least one part of the periphery of said cavity (5; 15; 25), is formed at least one micro-cavity (5a, 5b; 15a, 15b; 25a, 25b), constituting an area of thermo-viscous losses from said cavity (5; 15; 25) along at least one of the internal walls of the two sheets of substrate (2, 3; 12, 13; 22, 23) delimiting said cavity (5; 15; 25), the dimensions of a micro-cavity (5a, 5b; 15a, 15b; 25a, 25b) being chosen to favor the propagation of part of the acoustic waves from the cavity (5; 15; 25) towards the micro-cavity, generating thermo-viscous losses e t thereby reducing the acoustic energy of said cavity; means (6th; 16th; 26th being provided to contain the acoustic waves escaping from said micro-cavity (5a, ' 5b; 15a, 15b; 25a, 25b).
2 - Vitrage selon la revendication 1, caractérisé par le fait qu'une micro-cavité (5a, 5b ; 15a, 15b ; 25a,2 - Glazing according to claim 1, characterized in that a micro-cavity (5a, 5b; 15a, 15b; 25a,
25b) se présente sous la forme d'une lame mince dont la largeur est comprise entre 0,2 mm et 1 mm bornes incluses et la hauteur utile est au moins égale à 6 mm.25b) is in the form of a thin blade, the width of which is between 0.2 mm and 1 mm inclusive, and the useful height is at least equal to 6 mm.
3 - Vitrage selon la revendication 2, caractérisé par le fait que la hauteur de la lame mince est au moins égale à 11 mm.3 - Glazing according to claim 2, characterized in that the height of the thin strip is at least equal to 11 mm.
4 - Vitrage selon l'une des revendications 1 à 3, caractérisé par le fait qu'au moins une micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) est formée sur au moins une face et au moins l'un des côtés du vitrage. 5 - Vitrage selon la revendication 4, caractérisé par le fait qu'au moins une micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) est formée sur chacune des faces du vitrage, notamment sur toute la périphérie de ce dernier. 6 - Vitrage selon l'une des revendications 1 à 5, caractérisé par le fait qu'une micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) est formée entre la paroi interne d'une feuille de substrat (2, 3 ; 12, 13 ; 22, 23) et une paroi en regard (6a, 6b ; 16a, 16b ; 26a, 26b) d'un profilé (6 ; 16 ; 26) disposé à la périphérie interne de la cavité (5 ; 15 ; 25) et délimitant une chambre intérieure (6e ; 16e ; 26e) en communication avec la micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) par au moins une ouverture (9a, 9b ; 19a, 19b ; 29a, 29b), pratiquée dans ladite paroi (6a, 6b ; 16a, 16b ; 26a, 26b) du profilé (6 ; 16 ; 26), ladite chambre (6e ; 16e ; 26e) permettant de contenir les ondes acoustiques s' échappant de la micro-cavité (5a, 5b ; 15a, 15b ; 25a, 25b) .4 - Glazing according to one of claims 1 to 3, characterized in that at least one micro-cavity (5a, 5b; 15a, 15b; 25a, 25b) is formed on at least one face and at least the one side of the glazing. 5 - Glazing according to claim 4, characterized in that at least one micro-cavity (5a, 5b; 15a, 15b; 25a, 25b) is formed on each of the faces of the glazing, in particular on the entire periphery of the latter . 6 - Glazing according to one of claims 1 to 5, characterized in that a micro-cavity (5a, 5b; 15a, 15b; 25a, 25b) is formed between the internal wall of a sheet of substrate (2 , 3; 12, 13; 22, 23) and a facing wall (6a, 6b; 16a, 16b; 26a, 26b) of a profile (6; 16; 26) disposed at the internal periphery of the cavity (5 ; 15; 25) and delimiting an interior chamber (6th; 16th; 26th) in communication with the microcavity (5a, 5b; 15a, 15b; 25a, 25b) by at least one opening (9a, 9b; 19a, 19b ; 29a, 29b), formed in said wall (6a, 6b; 16a, 16b; 26a, 26b) of the profile (6; 16; 26), said chamber (6th; 16th; 26e) making it possible to contain the acoustic waves s' escaping from the microcavity (5a, 5b; 15a, 15b; 25a, 25b).
7 - Vitrage selon la revendication 6, caractérisé par le fait qu'une ouverture (9a, 9b ; 19a, 19b ; 29a, 29b) est constituée par une fente longitudinale continue ou discontinue, agencée dans la partie inférieure du profilé à l'opposé de la cavité plate (5 ; 15 ; 25).7 - Glazing according to claim 6, characterized in that an opening (9a, 9b; 19a, 19b; 29a, 29b) is constituted by a continuous or discontinuous longitudinal slot, arranged in the lower part of the profile opposite of the flat cavity (5; 15; 25).
8 - Vitrage selon la revendication 7, caractérisé par le fait que la hauteur de la fente (9a, 9b ; 19a, 19b ;8 - Glazing according to claim 7, characterized in that the height of the slot (9a, 9b; 19a, 19b;
29a, 29b) est de l'ordre de 1 mm.29a, 29b) is of the order of 1 mm.
9 - Vitrage selon l'une des revendications 6 à 8, caractérisé par le fait que le profilé (6 ; 16 ; 26) est constitué par un élément de section au moins en U dont le fond (6c ; 16c ; 26c) en contact avec la cavité remplie de gaz et les ailes (6a, 6b ; 16a, 16b ; 26a, 26b) délimitent la chambre intérieure (6e ; 16e ; 26e), et les ailes (6a, 6b ; 16a, 16b ; 26a, 26b) délimitent chacune une microcavité (5a, 5b ; 15a, 15b ; 25a, 25b) avec la paroi en regard du substrat (2, 3 ; 12, 13 ; 22, 23) et coopèrent par leur base avec le dispositif (4 ; 14 ; 24) formant joint étanche et cadre intercalaire.9 - Glazing according to one of claims 6 to 8, characterized in that the profile (6; 16; 26) is constituted by an element of section at least in U whose bottom (6c; 16c; 26c) in contact with the gas-filled cavity and the wings (6a, 6b; 16a, 16b; 26a, 26b) delimit the inner chamber (6e; 16th; 26e), and the wings (6a, 6b; 16a, 16b; 26a, 26b) each delimit a microcavity (5a, 5b; 15a, 15b; 25a, 25b) with the wall opposite the substrate (2, 3; 12, 13; 22, 23) and cooperate by their base with the device (4; 14; 24) forming a watertight seal and an intermediate frame.
10 - Vitrage selon la revendication 9, caractérisé par le fait que le dispositif (4 ; 14) formant joint étanche et cadre intercalaire est constitué par un cadre (6 ; 16) présentant un fond (6d) ; lβd) en contact avec un joint de scellement périphérique (8 ; 18) adhérant aux bords internes des deux feuilles de substrat (2, 3 ; 12, 13) en regard, et des ailes (6a, 6b ; 16a, 16b). disposées en regard des feuilles de substrat (2, 3 ; 12, 13) avec interposition d'un cordon de collage et d' étanchéité (7a, 7b ; 17a, 17b), continu ou discontinu, le profilé en U de formation des micro-cavités étant rapporté sur ledit cadre intermédiaire (14) ou étant formé d'une seule pièce avec lui, auquel cas les ailes (6a, 6b) du cadre intermédiaire (6) se prolongent pour former celles dudit profilé en .U.10 - Glazing according to claim 9, characterized in that the device (4; 14) forming a waterproof seal and intermediate frame is constituted by a frame (6; 16) having a bottom (6d); lβd) in contact with a peripheral sealing joint (8; 18) adhering to the internal edges of the two substrate sheets (2, 3; 12, 13) facing each other, and of the wings (6a, 6b; 16a, 16b). arranged opposite the substrate sheets (2, 3; 12, 13) with interposition of a bonding and sealing bead (7a, 7b; 17a, 17b), continuous or discontinuous, the U-shaped profile for forming micro -cavities being attached to said intermediate frame (14) or being formed in one piece with it, in which case the wings (6a, 6b) of the intermediate frame (6) extend to form those of said profile in .U.
11 - Vitrage selon la revendication 9, caractérisé par le fait que le dispositif (24) formant joint étanche et cadre intercalaire est constitué par un feuillard périphérique (28) adhérant aux tranches des deux feuilles de substrat (22, 23) , le profilé en U (26) de formation des micro-cavités (25a, 25b) étant rapporté sur ledit feuillard (28) . 12 - Vitrage selon l'une des revendications 1 à11 - Glazing according to claim 9, characterized in that the device (24) forming a tight seal and intermediate frame is constituted by a peripheral strip (28) adhering to the edges of the two sheets of substrate (22, 23), the profile in U (26) for forming micro-cavities (25a, 25b) being attached to said strip (28). 12 - Glazing according to one of claims 1 to
11, caractérisé par le fait qu'une feuille de substrat (2, 3 ; 12, 13 ; 22, 23) est constituée par un verre monolithique, un verre feuilleté ou un verre feuilleté acoustique. 11, characterized in that a substrate sheet (2, 3; 12, 13; 22, 23) is constituted by a monolithic glass, a laminated glass or an acoustic laminated glass.
EP03753633A 2002-07-15 2003-07-09 Sound-insulating glazing with thermoviscous losses Withdrawn EP1521895A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0208937A FR2842242B1 (en) 2002-07-15 2002-07-15 ACOUSTIC INSULATING GLAZING WITH THERMO-VISCOUS LOSS EFFECT
FR0208937 2002-07-15
PCT/FR2003/002138 WO2004007886A1 (en) 2002-07-15 2003-07-09 Sound-insulating glazing with thermoviscous losses

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EP1521895A1 true EP1521895A1 (en) 2005-04-13

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EP (1) EP1521895A1 (en)
JP (1) JP2005533204A (en)
KR (1) KR20050025599A (en)
CN (1) CN100439647C (en)
AU (1) AU2003271798A1 (en)
BR (1) BR0312018A (en)
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FR2856951B1 (en) * 2003-07-01 2006-06-23 Saint Gobain GLAZING COMPRISING A REINFORCING ELEMENT
JP5888496B2 (en) * 2012-01-13 2016-03-22 セントラル硝子株式会社 Double glazing
JP5975809B2 (en) * 2012-09-12 2016-08-23 八千代工業株式会社 Double glazing structure

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LU62150A1 (en) * 1970-11-27 1972-08-03
CH582636A5 (en) * 1973-09-13 1976-12-15 Fankhauser Glas Ag
DE2748223C2 (en) * 1977-10-27 1982-12-09 DCL Glass Consult GmbH, 8000 München Insulating glass unit with at least two parallel glass panes, in which at least one hollow profile part is arranged along the inner surface of the sealing and connecting member, the cross section of which forms an inner cavity containing soundproofing material which is connected to the interior space between the glass panes containing the gas filling
CN2047706U (en) * 1989-04-10 1989-11-15 杜根胜 Double glazing window
FR2794792B1 (en) 1999-06-08 2001-08-31 Saint Gobain Vitrage ACOUSTIC INSULATING GLASS WITH PARTITIONED WAVEGUIDE

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Title
See references of WO2004007886A1 *

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KR20050025599A (en) 2005-03-14
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US20060162280A1 (en) 2006-07-27
CN100439647C (en) 2008-12-03
WO2004007886A1 (en) 2004-01-22
FR2842242A1 (en) 2004-01-16
JP2005533204A (en) 2005-11-04
US7537813B2 (en) 2009-05-26
AU2003271798A1 (en) 2004-02-02
FR2842242B1 (en) 2004-12-17

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