EP0558467A1 - Mirror and a process for the protection of a reflective film of a mirror - Google Patents
Mirror and a process for the protection of a reflective film of a mirror Download PDFInfo
- Publication number
- EP0558467A1 EP0558467A1 EP93870029A EP93870029A EP0558467A1 EP 0558467 A1 EP0558467 A1 EP 0558467A1 EP 93870029 A EP93870029 A EP 93870029A EP 93870029 A EP93870029 A EP 93870029A EP 0558467 A1 EP0558467 A1 EP 0558467A1
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- Prior art keywords
- mirror
- glass
- interstitial space
- humidity
- synthetic material
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
- A47G1/02—Mirrors used as equipment
Definitions
- the present invention applies to a mirror most often composed of a sheet of glass or of synthetic material, the back of which is coated with a reflective layer coated in turn with a protective layer produced, for example, by a galvanic copper plating and a varnish, so as to create an opaque surface reflecting light and image.
- a protective layer produced, for example, by a galvanic copper plating and a varnish.
- the reflecting side of a traditional mirror is produced by immersing a glass or synthetic surface (an acrylic resin, in most cases) in a silver nitrate bath protected by galvanic copper plating and by a reducing agent. The operation ends with the application of one or more layers of varnish.
- the subject of the invention is the creation of a mirror whose lifespan greatly exceeds that of a traditional mirror.
- the invention therefore relates to a method guaranteeing better protection of the reflective layer. It is characterized by its ability to extend the life of a traditional mirror, particularly that of a mirror exposed to a humid environment and / or weathering. Indeed, mirrors are frequently used in interior and exterior decoration, in particular for coating facades, entrance halls and displays, both indoors and outdoors. They are an integral part of certain road safety measures, in particular at dangerous crossroads, bus, tram and metro stops. Mirrors are still applicable in the advertising sector and in particular as light advertising. They are part of the sanitary installations and are also used during the construction of trains, boats, planes, coaches and cars.
- Document BE-A-809072 defines a multilateral insulating glazing where the contours of at least two panes, spaced apart by a space, are assembled by means of a gluing in order to create an interstitial space.
- one of the panes of the multilateral glazing is provided with a metal layer reflecting infrared rays of the long wave type.
- This metallic layer is generally applied by vaporization or cathodic spraying of metal oxides, under vacuum (pyrolysis) or off-line (magnetron layer). It is mainly intended for glazing offering protection against the sun's rays in order to guarantee adequate light transmission and effective thermal insulation. Usually, the vaporization or sputtering process does not apply when making a mirror. Multilateral glazing has for its object only better insulation of the glazing as well as better protection against the rays of the sun.
- Document DE-C-685 622 defines a mirror assembled to a bottom wall, under vacuum and by means of a frame to create a layer of air at rest.
- Said frame is provided with grooves in which are installed the mirror and the glass plate or parallel synthetic material having been bordered over the entire periphery of a glass film and grouted with cement.
- screws and nuts strengthen the assembly.
- additive humidity can also appear in the intermediate space.
- the insertion of a layer of air between two vertical surfaces in no way guarantees protection against oxidation if the operation does not include the application of a hygroscopic substance.
- Document FR-A-2 140 415 illustrates an invention in which the mirror is equipped with a heating element.
- a second parallel surface is installed in a frame or in a profile, but always in the absence of a hygroscopic substance.
- the space between the two surfaces is in no way protected against humidity or against atmospheric conditions, so that oxidation can still occur.
- protection against oxidation was never the major objective of the inventor in question, who only aimed at achieving a mirror fitted with a heating element.
- an orifice must be provided to level the pressure within the hermetic space in relation to the pressure of the ambient air. It is obvious that this orifice will allow a free passage of air and the related humidity. It is clear that the inventor designed his mirror as a heating element.
- our invention aims precisely to eliminate the oxidation caused by ambient humidity and the deterioration by certain detergents and other chemical impacts, resulting from the pollution of ambient air, which attack the reflective layer coating the rear wall of the mirror. .
- optical characteristics of a mirror removed from the oxidation phenomena and the impact of atmospheric conditions and other harmful influences described in the previous paragraph, are identical to those of a traditional mirror.
- the front face of the mirror is in direct contact with the environment while its bottom wall, coated with the reflective layer, is located in the interstitial space free of any trace of humidity.
- the invention may be provided with holes which pierce it from one face to the other. Thanks to the sealing of these holes by means of collagen and a cylindrical joint, the resistance to humidity between the two surfaces will be consolidated.
- Circular holes apply in particular when the mirror must reflect a light advertisement. They will also be used to hang signs or information panels or when decorating a light sign.
- the invention can also materialize by using a specific method for protecting the reflecting layer of a mirror. This is in particular a welding technique where several surfaces merge along the edges of their respective contours, by the application of a metal tab, for example.
- the invention is also ecological since, by ensuring a better longevity of the mirror, it Significantly reduces the amount of waste destined for landfill. It suffices to mention in particular pigments such as Pb and Cr.
- the removal of said layer can be carried out by a sandblasting process or by masking the edges of the surface during manufacture of the mirror, or by a milling operation of the contour of the mirror.
- the mirror is composed of a first glass or synthetic mirror (1) coated on the back with a reflective layer (2) coated in turn with a layer protection (3) by galvanic copper plating, for example, and a layer of varnish (4).
- This mirror differs from other usual mirrors by the addition of a second parallel surface (5).
- the two surfaces are separated from each other by an intermediate piece (6) in order to delimit an interstitial space (7) free of air and traces of moisture between the mirror (1), and the parallel surface ( 5) glass or synthetic material.
- the intermediate element (6) can have an additional function, in particular that of containing a hygroscopic substance (9).
- it is a cavity in communication with the hermetic interstitial space (7) of the double glazing by means of tiny perforations in the wall of the adjacent intermediate element. to this hermetic interstitial space.
- the installation When installing illuminated signs, the installation includes neon lighting in combination with mirrors.
- each hole In order to allow the installation of the required electrical wiring, it is necessary to apply holes to the mirror. Having pierced the two surfaces (1, 5), it is then necessary to stuff each hole with a sealed cylindrical piece (10) applied in a completely sealed manner. In addition, the edge of each hole will be covered with a seal (11) and a fixing nut (12) in order to ensure any absence of air and traces of moisture within the interstitial space ( 7).
- the cylindrical part (10) can be welded in the traditional way by soldering it on a strip of molten copper on the edge of each hole of surfaces 1 and 5.
- the holes will allow the passage of the electrical wiring required to power the neon lighting; on the other hand they will allow the hanging of the sign on the facade of a building when it is an identification panel or a sign.
- the mirror can be flat but also concave or convex or be subject to a surface inflection.
- the contours can also have any shape.
- the atmosphere of the hermetic interstitial space (7) is filled with dry air, thanks to the addition of a hygroscopic substance.
- This fluid can also be an inert and dry gas (generally argon).
- the hygroscopic substance ensures the exemption of all traces of moisture.
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- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Abstract
Description
La présente invention s'applique à un miroir le plus souvent composé d'une feuille de verre ou en matière synthétique dont le dos est revêtu d'une couche réfléchissante revêtue à son tour d'une couche de protection réalisée, par exemple, par un cuivrage galvanique et par un vernis, de manière à créer une surface opaque réfléchissant lumière et image. Généralement, la face réfléchissante d'un miroir traditionnel se réalise par immersion d'une surface en verre ou en matière synthétique (une résine acrylique, dans la plupart des cas) dans un bain de nitrate d'argent protégé par un cuivrage galvanique et par un agent réducteur. L'opération se termine par l'application d'une ou de plusieurs couches de vernis.The present invention applies to a mirror most often composed of a sheet of glass or of synthetic material, the back of which is coated with a reflective layer coated in turn with a protective layer produced, for example, by a galvanic copper plating and a varnish, so as to create an opaque surface reflecting light and image. Generally, the reflecting side of a traditional mirror is produced by immersing a glass or synthetic surface (an acrylic resin, in most cases) in a silver nitrate bath protected by galvanic copper plating and by a reducing agent. The operation ends with the application of one or more layers of varnish.
En raison de ces couches de protection et en fonction de la température ambiante, du degré d'humidité et des conditions atmosphériques, la durée de la protection contre l'oxydation ou l'altération de la couche réfléchissante est variable. L'invention a pour objet la création d'un miroir dont la durée de vie dépasse largement celle d'un miroir traditionnel.Due to these protective layers and depending on the ambient temperature, humidity and atmospheric conditions, the duration of protection against oxidation or alteration of the reflective layer is variable. The subject of the invention is the creation of a mirror whose lifespan greatly exceeds that of a traditional mirror.
L'invention vise dès lors un procédé garantissant une meilleure protection de la couche réfléchissante. Elle se caractérise par sa capacité de prolonger la durée de vie d'un miroir traditionnel, particulièrement celle d'un miroir exposé à un environnement humide et/ou aux intempéries. En effet, les miroirs sont fréquemment utilisés en décoration intérieure et extérieure, notamment pour le revêtement de façades, de halls d'entrée et d'étalages, tant à l'intérieur qu'à l'extérieur. Ils font partie intégrante de certaines mesures de sécurité routière, en particulier aux carrefours dangereux, arrêts de bus, de tram et de métro. Les miroirs s'appliquent encore dans le secteur de la publicité et notamment comme publicité lumineuse. Ils font partie des installations sanitaires et s'utilisent en outre lors de la construction de trains, bateaux, avions, autocars et voitures.The invention therefore relates to a method guaranteeing better protection of the reflective layer. It is characterized by its ability to extend the life of a traditional mirror, particularly that of a mirror exposed to a humid environment and / or weathering. Indeed, mirrors are frequently used in interior and exterior decoration, in particular for coating facades, entrance halls and displays, both indoors and outdoors. They are an integral part of certain road safety measures, in particular at dangerous crossroads, bus, tram and metro stops. Mirrors are still applicable in the advertising sector and in particular as light advertising. They are part of the sanitary installations and are also used during the construction of trains, boats, planes, coaches and cars.
Le document BE-A-809072 définit un vitrage isolant multilatéral où les les contours de deux vitres au moins, écartées par un espace, s'assemblent au moyen d'un encollage afin de créer un espace interstitiel. A la face intérieure ou extérieure de l'espace interstitiel, l'une des vitres du vitrage multilatéral est pourvue d'une couche métallique réfléchissant les rayons infrarouges du type ondes longues.Document BE-A-809072 defines a multilateral insulating glazing where the contours of at least two panes, spaced apart by a space, are assembled by means of a gluing in order to create an interstitial space. On the interior or exterior face of the interstitial space, one of the panes of the multilateral glazing is provided with a metal layer reflecting infrared rays of the long wave type.
Cette couche métallique s'applique généralement par vaporisation ou pulvérisation cathodique d'oxydes de métal, sous vide ( pyrolyse) ou off-line (couche magnétron). Elle se destine principalement aux vitrages offrant une protection contre les rayons de soleil afin de garantir une transmission lumineuse adéquate et une isolation thermique efficace. Habituellement, le procédé de vaporisation ou de pulvérisation cathodique ne s'applique pas lors de la réalisation d'un miroir. Le vitrage multilatéral n'a pour objet qu'une meilleure isolation du vitrage ainsi qu'une meilleure protection contre les rayons du soleil.This metallic layer is generally applied by vaporization or cathodic spraying of metal oxides, under vacuum (pyrolysis) or off-line (magnetron layer). It is mainly intended for glazing offering protection against the sun's rays in order to guarantee adequate light transmission and effective thermal insulation. Usually, the vaporization or sputtering process does not apply when making a mirror. Multilateral glazing has for its object only better insulation of the glazing as well as better protection against the rays of the sun.
Le document DE-C-685 622 définit un miroir assemblé à une paroi de fond, sous vide et au moyen d'un châssis pour créer une couche d'air au repos. Ledit châssis est pourvu de rainures dans lesquelles s'installent le miroir et la plaque de verre ou en matière synthétique parallèle ayant été bordés sur toute la périphérie d'une pellicule de verre et jointoyé au ciment. Aux coins du miroir, des vis et des écrous renforcent l'assemblage. Il n'est nullement question de rendre le miroir inoxydable. C'est logique puisque l'on ne peut empêcher que de l'humidité résiduelle s'installe lors de l'assemblage et qu'elle est de nature à provoquer une oxydation rapide. En fonction de la nature du châssis (en bois, notamment) de l'humidité additive peut en outre se manifester dans l'espace intermédiaire. En résumé, il est clair que l'insertion d'une couche d'air entre deux surfaces verticales ne garantit nullement une protection contre l'oxydation si l'opération n'inclut pas l'application d'une substance hygroscopique.Document DE-C-685 622 defines a mirror assembled to a bottom wall, under vacuum and by means of a frame to create a layer of air at rest. Said frame is provided with grooves in which are installed the mirror and the glass plate or parallel synthetic material having been bordered over the entire periphery of a glass film and grouted with cement. At the corners of the mirror, screws and nuts strengthen the assembly. There is no question of making the mirror stainless. This is logical since it cannot be prevented that residual moisture settles during assembly and that it is likely to cause rapid oxidation. Depending on the nature of the chassis (wooden, in particular), additive humidity can also appear in the intermediate space. In summary, it is clear that the insertion of a layer of air between two vertical surfaces in no way guarantees protection against oxidation if the operation does not include the application of a hygroscopic substance.
Le document FR-A-2 140 415 illustre une invention où le miroir est équipé d'un élément chauffant. Ici également, une seconde surface parallèle s'installe dans un châssis ou dans un profil, mais toujours en absence d'une substance hygroscopique. Il en résulte que l'espace entre les deux surfaces n'est nullement protégé contre l'humidité ou contre les conditions atmosphériques, de sorte que l'oxydation puisse encore se manifester.
Par ailleurs, la protection contre l'oxydation n'a jamais été l'objectif majeur de l'inventeur en question qui ne visait que la réalisation d'un miroir équipé d'un élément chauffant. En ayant recours à un châssis permettant une isolation hermétique (voir page 21, ligne 15), il faut prévoir un orifice destiné à niveler la pression au sein de l'espace hermétique par rapport à la pression de l'air ambiant. Il est évident que cet orifice permettra un passage libre de l'air et de l'humidité afférente. Il est clair que l'inventeur a conçu son miroir comme un élément chauffant.Document FR-A-2 140 415 illustrates an invention in which the mirror is equipped with a heating element. Here also, a second parallel surface is installed in a frame or in a profile, but always in the absence of a hygroscopic substance. As a result, the space between the two surfaces is in no way protected against humidity or against atmospheric conditions, so that oxidation can still occur.
Furthermore, protection against oxidation was never the major objective of the inventor in question, who only aimed at achieving a mirror fitted with a heating element. When using a chassis allowing hermetic insulation (see page 21, line 15), an orifice must be provided to level the pressure within the hermetic space in relation to the pressure of the ambient air. It is obvious that this orifice will allow a free passage of air and the related humidity. It is clear that the inventor designed his mirror as a heating element.
Or, notre invention vise précisément à éliminer l'oxydation provoquée par l'humidité ambiante et l'altération par certains détergents et autres impacts chimiques, résultant de la pollution de l'air ambiant, qui attaquent la couche réfléchissante revêtant la paroi arrière du miroir.However, our invention aims precisely to eliminate the oxidation caused by ambient humidity and the deterioration by certain detergents and other chemical impacts, resulting from the pollution of ambient air, which attack the reflective layer coating the rear wall of the mirror. .
Il s'agit d'un miroir analogue au type de miroir traditionnel défini au premier paragraphe de notre document. Il se caractérise par son assemblage à une deuxième ou plusieurs surfaces en verre ou en matière synthétique parallèles, transparentes ou non et résistant aux conditions atmosphériques et à l'humidité. L'assemblage des surfaces parallèles s'effectue à l'aide d'un élément intermédiaire créant de ce fait un espace interstitiel exempt d'air et de toute trace d'humidité. L'adjonction d'une substance hygroscopique permet d'absorber et de retenir l'humidité résiduelle, infiltrée lors de l'assemblage. Cette substance garantit en outre l'étanchéité de l'espace interstitiel isolé hermétiquement après l'assemblage des surfaces parallèles.It is a mirror similar to the traditional type of mirror defined in the first paragraph of our document. It is characterized by its assembly to a second or more parallel glass or synthetic surfaces, transparent or not and resistant to atmospheric conditions and humidity. The parallel surfaces are assembled using an intermediate element, thereby creating an interstitial space free of air and any trace of moisture. The addition of a hygroscopic substance makes it possible to absorb and retain the residual moisture, infiltrated during assembly. This substance also guarantees the tightness of the interstitial space hermetically isolated after the assembly of the parallel surfaces.
Les caractéristiques optiques d'un miroir soustrait aux phénomènes d'oxydation et à l'impact des conditions atmosphériques et autres influences néfastes décrites au paragraphe précédent, sont identiques à celles d'un miroir traditionnel.The optical characteristics of a mirror removed from the oxidation phenomena and the impact of atmospheric conditions and other harmful influences described in the previous paragraph, are identical to those of a traditional mirror.
La face avant du miroir est en contact direct avec l'environnement alors que sa paroi de fond, revêtue de la couche réfléchissante, se situe dans l'espace interstitiel exempt de toute trace d'humidité.The front face of the mirror is in direct contact with the environment while its bottom wall, coated with the reflective layer, is located in the interstitial space free of any trace of humidity.
L'invention peut être pourvue de trous qui le transpercent d'une face à l'autre. Grâce à l'étanchement de ces trous au moyen d'un collagène et d'un joint cylindrique, la résistance à l'humidité entre les deux surfaces sera consolidée.The invention may be provided with holes which pierce it from one face to the other. Thanks to the sealing of these holes by means of collagen and a cylindrical joint, the resistance to humidity between the two surfaces will be consolidated.
Des trous circulaires s'appliquent notamment lorsque le miroir devra réfléchir une publicité lumineuse. Ils serviront également à accrocher des enseignes ou panneaux d'information ou lors de la décoration d'une enseigne lumineuse.Circular holes apply in particular when the mirror must reflect a light advertisement. They will also be used to hang signs or information panels or when decorating a light sign.
L'invention peut encore se matérialiser en ayant recours à un procédé spécifique de protection de la couche réfléchissante d'un miroir. Il s'agit notamment d'une technique de soudage où plusieurs surfaces fusionnent tout au long des bords de leurs contours respectifs, par l'application d'une languette métallique, par exemple.The invention can also materialize by using a specific method for protecting the reflecting layer of a mirror. This is in particular a welding technique where several surfaces merge along the edges of their respective contours, by the application of a metal tab, for example.
L'invention est en outre écologique puisque, en assurant une meilleure longévité du miroir, elle réduit sensiblement la quantité de déchets destinés à la décharge publique. Il suffit de mentionner notamment des pigments tels que Pb et Cr.The invention is also ecological since, by ensuring a better longevity of the mirror, it Significantly reduces the amount of waste destined for landfill. It suffices to mention in particular pigments such as Pb and Cr.
Avant de réaliser, par encollage, la fixation d'une languette ou d'un profil métallique au bord d'un miroir en plein assemblage, il importe d'enlever la couche réfléchissante et éventuellement le vernis d'une partie sur le bord du contour. L'enlèvement de ladite couche peut s'effectuer par un procédé de sablage ou en masquant les bords de la surface en cours de fabrication du miroir, ou par une opération de fraisage du contour du miroir.Before making, by gluing, the fixing of a tongue or a metal profile to the edge of a mirror in full assembly, it is important to remove the reflective layer and possibly the varnish of a part on the edge of the contour . The removal of said layer can be carried out by a sandblasting process or by masking the edges of the surface during manufacture of the mirror, or by a milling operation of the contour of the mirror.
Les caractéristiques spécifiques de la présente invention ainsi que d'autres particularités et détails seront reprises à la description détaillée de l'une des formes d'une exécution préférentielle lors de la mise en pratique de cette invention. A cet effet, il est fait référence aux dessins accompagnant le présent document.The specific characteristics of the present invention as well as other particularities and details will be taken up in the detailed description of one of the forms of a preferred embodiment when this invention is put into practice. For this purpose, reference is made to the drawings accompanying this document.
En ce qui concerne ces dessins :
- la figure 1 est une coupe verticale partielle d'un miroir protégé par un montage parallèle conformément à l'énoncé de l'invention,
et - la figure 2 est une coupe verticale partielle d'un miroir composé, conformément à l'invention, d'un verre de sécurité feuilleté pourvu d'une couche réfléchissante et d'une seconde surface en verre ou en matière synthétique.
- FIG. 1 is a partial vertical section of a mirror protected by a parallel mounting in accordance with the statement of the invention,
and - FIG. 2 is a partial vertical section of a mirror composed, in accordance with the invention, of a laminated safety glass provided with a reflective layer and with a second surface in glass or plastic.
Comme le montre la figure 1, conformément à l'invention, le miroir est composé d'un premier miroir en verre ou en matière synthétique (1) revêtu au dos d'une couche réfléchissante (2) revêtue à son tour d'une couche de protection (3) par un cuivrage galvanique, par exemple, et une couche de vernis (4). Ce miroir diffère des autres miroirs habituels par l'addition d'une seconde surface parallèle (5). Les deux surfaces sont écartées l'une de l'autre par une pièce intermédiaire (6) afin de délimiter un espace interstitiel (7) exempt d'air et de traces d'humidité entre le miroir (1), et la surface parallèle (5) en verre ou en une matière synthétique.As shown in Figure 1, according to the invention, the mirror is composed of a first glass or synthetic mirror (1) coated on the back with a reflective layer (2) coated in turn with a layer protection (3) by galvanic copper plating, for example, and a layer of varnish (4). This mirror differs from other usual mirrors by the addition of a second parallel surface (5). The two surfaces are separated from each other by an intermediate piece (6) in order to delimit an interstitial space (7) free of air and traces of moisture between the mirror (1), and the parallel surface ( 5) glass or synthetic material.
L'utilisation de pareil élément intermédiaire pour séparer les deux surfaces définies, assure sur toute la périphérie des deux surfaces décrites, une protection contre les conditions atmosphériques puisque l'élément intermédiaire est appliqué par voie d'encollage (8). Dans les deux cas, une substance hygroscopique (9) a été utilisée pour absorber l'humidité résiduelle et l'humidité s'infiltrant éventuellement.The use of such an intermediate element to separate the two defined surfaces, provides protection over the entire periphery of the two surfaces described, protection against atmospheric conditions since the intermediate element is applied by gluing (8). In both cases, a hygroscopic substance (9) was used to absorb the residual moisture and possibly infiltrating moisture.
Tel qu'il est défini au document BE-A-775639, l'élément intermédiaire (6) peut avoir une fonction supplémentaire, notamment celle de contenir une substance hygroscopique (9). Dans ce contexte, il s'agit d'une cavité en communication avec l'espace interstitiel hermétique (7) du double vitrage par le biais de perforations minuscules dans la paroi de l'élément intermédiaire adjacent à cet espace interstitiel hermétique.As defined in document BE-A-775639, the intermediate element (6) can have an additional function, in particular that of containing a hygroscopic substance (9). In this context, it is a cavity in communication with the hermetic interstitial space (7) of the double glazing by means of tiny perforations in the wall of the adjacent intermediate element. to this hermetic interstitial space.
Lors de la mise en place d'enseignes lumineuses, l'installation comprend un éclairage au néon en combinaison avec des miroirs.When installing illuminated signs, the installation includes neon lighting in combination with mirrors.
Afin de permettre l'installation du câblage électrique requis, il est nécessaire d'appliquer des trous au miroir. Ayant percé les deux surfaces (1, 5), il faut ensuite bourrer chaque trou d'une pièce cylindrique étanche (10) appliquée de manière entièrement étanche. En outre, le bord de chaque trou sera couvert d'un joint (11) et d'un écrou de fixation (12) afin d'assurer toute absence d'air et de traces d'humidité au sein de l'espace interstitiel (7).In order to allow the installation of the required electrical wiring, it is necessary to apply holes to the mirror. Having pierced the two surfaces (1, 5), it is then necessary to stuff each hole with a sealed cylindrical piece (10) applied in a completely sealed manner. In addition, the edge of each hole will be covered with a seal (11) and a fixing nut (12) in order to ensure any absence of air and traces of moisture within the interstitial space ( 7).
La pièce cylindrique (10) peut être soudée de façon traditionnelle en la soudant sur une languette de cuivre fondue sur le bord de chaque trou des surfaces 1 et 5.The cylindrical part (10) can be welded in the traditional way by soldering it on a strip of molten copper on the edge of each hole of
D'une part, les trous permettront le passage du câblage électrique requis pour alimenter l'éclairage au néon; d'autre part ils permettront l'accrochage de l'enseigne à la façade d'un immeuble lorsqu'il s'agit d'un panneau d'identification ou d'une enseigne.On the one hand, the holes will allow the passage of the electrical wiring required to power the neon lighting; on the other hand they will allow the hanging of the sign on the facade of a building when it is an identification panel or a sign.
Dans certains cas, il peut s'avérer très utile d'assembler deux miroirs au lieu d'assembler un miroir et une surface en verre ou en matière synthétique. Ces deux miroirs sont alors montés les faces réfléchissantes tournées l'une vers l'autre selon une manière décrite dans l'invention, mais en utilisant toujours l'espace intermédiaire (6) et une substance hygroscopique (9). Ce procédé est particulièrement avantageux lorsque les deux faces du miroir doivent réfléchir simultanément.In some cases, it can be very useful to assemble two mirrors instead of assembling a mirror and a glass or plastic surface. These two mirrors are then mounted with the reflecting faces facing one another in a manner described in the invention, but still using the space intermediate (6) and a hygroscopic substance (9). This process is particularly advantageous when the two sides of the mirror must reflect simultaneously.
En lieu et place d'un miroir traditionnel, il peut être utile, comme le montre la figure 2, d'utiliser un vitrage normal (14) assemblé à la face avant d'un miroir traditionnel (1), au moyen d'une pellicule transparente (15) (généralement du polyvinylbutyral) ou d'une résine coulée. Il en résulte un miroir de sécurité feuilleté (13) dont le montage s'effectue par après à l'instar d'un miroir normal, soit parallèle à la surface en verre ou en une matière synthétique (5), créant de ce fait un espace interstitiel hermétique (7) rendu exempt de toute trace d'humidité grâce à l'adjonction d'une substance hygroscopique (9). Ce procédé s'applique surtout pour des raisons de sécurité.In place of a traditional mirror, it may be useful, as shown in Figure 2, to use normal glazing (14) assembled to the front face of a traditional mirror (1), by means of a transparent film (15) (generally polyvinyl butyral) or a cast resin. The result is a laminated safety mirror (13), the mounting of which is carried out afterwards like a normal mirror, either parallel to the surface of glass or of a synthetic material (5), thereby creating a hermetic interstitial space (7) made free from all traces of humidity by the addition of a hygroscopic substance (9). This process applies mainly for security reasons.
Lorsqu'il s'agit d'un miroir destiné à la publicité lumineuse, il peut être avantageux d'appliquer la couche réfléchissante sur une surface en verre ou en une matière synthétique après que le verre, pour une raison décorative, a été muni d'une sérigraphie ou d'une gravure ou d'une autre forme de surimpression ou de reproduction. Un effet analogue peut être obtenu (figure 2) lorsque l'on traite partiellement la face réfléchissante (17) d'un miroir par une technique de gravure, de sablage ou de fraisage (16), et ce p.ex. en forme de lettres ou de dessins pouvant être coloriés par laquage ou à l'aide d'une surface en matière synthétique coloriée (18) à appliquer à la face réfléchissante du miroir traité.In the case of a mirror intended for illuminated advertising, it may be advantageous to apply the reflective layer to a glass or synthetic material surface after the glass, for decorative reasons, has been provided with '' a serigraphy or an engraving or another form of overprinting or reproduction. A similar effect can be obtained (FIG. 2) when the reflective face (17) of a mirror is partially treated by an engraving, sanding or milling technique (16), and this in the form of letters or designs that can be colored by lacquering or using a colored synthetic surface (18) to be applied to the reflecting face of the treated mirror.
Le miroir peut être plat mais également concave ou convexe ou être sujet à une inflexion de surface. Les contours peuvent en outre présenter une forme quelconque.The mirror can be flat but also concave or convex or be subject to a surface inflection. The contours can also have any shape.
Généralement, l'atmosphère de l'espace interstitiel hermétique (7) se remplit d'air sec, grâce à l'adjonction d'une substance hygroscopique. Ce fluide peut également être un gaz inerte et sec (généralement de l'argon). Ici encore, la substance hygroscopique assure l'exemption de toute trace d'humidité.Generally, the atmosphere of the hermetic interstitial space (7) is filled with dry air, thanks to the addition of a hygroscopic substance. This fluid can also be an inert and dry gas (generally argon). Here again, the hygroscopic substance ensures the exemption of all traces of moisture.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9200202A BE1005519A3 (en) | 1992-02-28 | 1992-02-28 | Mirror and method for protecting a layer of a mirror reflecting. |
| BE9200202 | 1992-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0558467A1 true EP0558467A1 (en) | 1993-09-01 |
Family
ID=3886165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93870029A Withdrawn EP0558467A1 (en) | 1992-02-28 | 1993-02-26 | Mirror and a process for the protection of a reflective film of a mirror |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0558467A1 (en) |
| BE (1) | BE1005519A3 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE685622C (en) * | 1900-01-01 | |||
| GB678676A (en) * | 1951-04-09 | 1952-09-03 | Novolor Ltd | Improvements in mirrors |
| FR2140415A1 (en) * | 1971-06-09 | 1973-01-19 | Glaverbel | |
| BE809072A (en) * | 1972-12-23 | 1974-04-16 | Jenaer Glaswerk Schott & Gen | MULTIPLE INSULATION GLAZING |
| US3921359A (en) * | 1970-11-27 | 1975-11-25 | Glaverbel | Multiple-pane glazings |
-
1992
- 1992-02-28 BE BE9200202A patent/BE1005519A3/en not_active IP Right Cessation
-
1993
- 1993-02-26 EP EP93870029A patent/EP0558467A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE685622C (en) * | 1900-01-01 | |||
| GB678676A (en) * | 1951-04-09 | 1952-09-03 | Novolor Ltd | Improvements in mirrors |
| US3921359A (en) * | 1970-11-27 | 1975-11-25 | Glaverbel | Multiple-pane glazings |
| FR2140415A1 (en) * | 1971-06-09 | 1973-01-19 | Glaverbel | |
| BE809072A (en) * | 1972-12-23 | 1974-04-16 | Jenaer Glaswerk Schott & Gen | MULTIPLE INSULATION GLAZING |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1005519A3 (en) | 1993-08-31 |
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