FR2543535A1 - Laminated windscreen for direct bonding to frame - Google Patents

Laminated windscreen for direct bonding to frame Download PDF

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Publication number
FR2543535A1
FR2543535A1 FR8305326A FR8305326A FR2543535A1 FR 2543535 A1 FR2543535 A1 FR 2543535A1 FR 8305326 A FR8305326 A FR 8305326A FR 8305326 A FR8305326 A FR 8305326A FR 2543535 A1 FR2543535 A1 FR 2543535A1
Authority
FR
France
Prior art keywords
sheet
adhesive
bead
layer
glazing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8305326A
Other languages
French (fr)
Other versions
FR2543535B1 (en
Inventor
Heinz Kunert
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 Vitrage SA
Original Assignee
Saint Gobain Vitrage 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 Vitrage SA filed Critical Saint Gobain Vitrage SA
Priority to FR8305326A priority Critical patent/FR2543535B1/en
Priority to DE3409831A priority patent/DE3409831A1/en
Priority to US06/592,895 priority patent/US4551372A/en
Priority to KR1019840001611A priority patent/KR920000770B1/en
Priority to BR8401439A priority patent/BR8401439A/en
Priority to CA000450669A priority patent/CA1245249A/en
Priority to EP19840400642 priority patent/EP0121479B1/en
Priority to JP59061256A priority patent/JPS59190019A/en
Priority to AT84400642T priority patent/ATE25042T1/en
Priority to ZA842385A priority patent/ZA842385B/en
Priority to DE8484400642T priority patent/DE3462102D1/en
Priority to ES1984286962U priority patent/ES286962Y/en
Priority to AU26306/84A priority patent/AU571208B2/en
Publication of FR2543535A1 publication Critical patent/FR2543535A1/en
Application granted granted Critical
Publication of FR2543535B1 publication Critical patent/FR2543535B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/1033—Laminated safety glass or glazing containing temporary protective coatings or layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
    • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/70—Sealing arrangements specially adapted for windows or windscreens
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/04—Joining glass to metal by means of an interlayer
    • C03C27/048—Joining glass to metal by means of an interlayer consisting of an adhesive specially adapted for that purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2375/00—Polyureas; Polyurethanes

Abstract

Windscreen for bonding into the surrounding frame or flange of the automobile bodywork has the inner glass sheet (2) stepped back, i.e. of smaller overall dimensions, relative to the outer glass sheet (1). The resultant projecting edge strip of the outer glass sheet (1) is faced (on the inside) with an opaque coating (7), and onto this a strip (10), occupying the space not occuplied by the inner sheet (2), of adhesive which prevents water vapour diffusion is applied. This strip is of such dimensions what when the windscreen is fitted into the automobile it serves as the bonding strip to the adjacent flange. The strip may be of a material which can be plasticised immediately before mounting the windscreen in the automobile, or may act as an already hardened intermediate strip, onto which a further adhesive strip is applied to make the bond with the mounting flange.

Description

VITRAGE DE SECURITE, ET NOTAMMENT PARE-BRISE POUR VEHICULES AUTOMOBILES
La présente invention a pour objet un nouveau vitrage de sé curité, destiné notamment a etre utilisé comme pare-brise pour véhicules automobiles.SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES
The present invention relates to a new safety glazing, intended in particular to be used as a windshield for motor vehicles.

La description suivante évoquera le cas des pare-brise pour véhicules, mais il va de soi que l'invention peut également concerner les vitrages de sécurité destinés à être montés dans n'importe quelle baie de véhicule ou de bâtiment. The following description will mention the case of windshields for vehicles, but it goes without saying that the invention can also relate to safety glazing intended to be mounted in any bay of a vehicle or building.

Actuellement, les pare-brise couramment utilisés sont des vitrages de sécurité dit "feuilletés", c'est-a-dire formés de deux ou plusieurs feuilles de verre séparées par une ou des feuilles intercalaires en matière plastique, cet intercalaire étant généralement une feuille de polyvinylbutyral. Currently, windshields commonly used are safety glazing called "laminated", that is to say formed from two or more glass sheets separated by one or more interlayer sheets of plastic, this interlayer is generally a sheet polyvinyl butyral.

Par souci de simplification, la description suivante se réfe- rera aux vitrages feuilletés simples, c-'est- -dire aux vitrages comportant deux feuilles de verre séparées par une feuille intercalaire en matière plastique, sans pour autant exclure du cadre de l'invention d'autres types de vitrages feuilletés. For the sake of simplification, the following description will refer to simple laminated glazing, that is to say, glazing comprising two sheets of glass separated by an intermediate sheet of plastic material, without however excluding the scope of the invention other types of laminated glazing.

De même que les autres matières plastiques utilisables dans cette application, le polyvinylbutyral est connu pour sa sensibilité a l'humidité. Lorsque de la vapeur d'eau diffuse du bord du vitrage dans la feuille intercalaire, la matière plastique qui la constitue absorbe l'eau. I1 se produit alors une diminution de l'adhérence de l'interca laire au verre. I1 appariait en outre au niveau des bords des phénomènes d'opacification du vitrage. Cette absorption d'eau peut se produire aussi bien avant le montage du pare-brise dans la carrosserie du véhicule, par exemple au cours du transport depuis l'atelier de fabrication jusqu'au lieu de montage, que pendant le stockage.Mais la diffusion de l'eau peut également avoir lieu quant le vitrage est déja monté dans la carrosserie, si on ne s'est pas assuré de l'étanchéité au niveau du chassis, de sorte que toute pénétration de l'humidité soit impossible. Like the other plastics which can be used in this application, polyvinyl butyral is known for its sensitivity to humidity. When water vapor diffuses from the edge of the glazing into the interlayer sheet, the plastic which constitutes it absorbs water. I1 then occurs a decrease in the adhesion of the interlayer to the glass. It also matched at the edges the phenomena of opacification of the glazing. This absorption of water can occur both before mounting the windshield in the vehicle body, for example during transport from the manufacturing workshop to the mounting location, as well as during storage. water can also take place when the glazing is already mounted in the bodywork, if we have not made sure of the tightness at the level of the chassis, so that any penetration of moisture is impossible.

Dans les pays tropicaux, les pare-brise feuilletés sont a cet égard soumis a des conditions particulierement séveres. Par suite, dans ces pays chauds et a haut degré d'humidité de l'air, les phénomènes mentionnés d'opacification et de décollage sont largement renforcés.In tropical countries, laminated windscreens are subject to particularly harsh conditions in this respect. Consequently, in these hot countries and with a high degree of air humidity, the mentioned phenomena of clouding and take-off are greatly reinforced.

L'invention a donc pour objet des pare-brise feuilletés dont les bords sont rendus aussi étanches que possible vis-à-vis de l'humidité risquant de pénétrer dans l'intercalaire en plastique, que ce soit avant le montage du pare-brise dans la carrosserie du véhicule ou après. Simultanément, les moyens d'étanchéité proposés facilitent et simplifient l'installation du vitrage dans la baie. The subject of the invention is therefore laminated windscreens, the edges of which are made as airtight as possible with respect to moisture which risks penetrating into the plastic interlayer, whether before the windshield is mounted. in or after the vehicle body. Simultaneously, the proposed sealing means facilitate and simplify the installation of the glazing in the bay.

Dans ce but, les pare-brise selon l'invention sont tels que la feuille de verre dirigée vers l'intérieur de l'habitacle du véhicule présente des dimensions plus petites que celle dirigée vers l'extérieur, de sorte que le bord du vitrage est dégradé en "marche d'escalier". For this purpose, the windshields according to the invention are such that the glass sheet directed towards the interior of the vehicle cabin has smaller dimensions than that directed towards the outside, so that the edge of the glazing is degraded to "stair step".

Selon l'invention une bande péripherique en un matériau opaque est appliquée sur les bords de la feuille de verre de plus grande dimension, qui dépassent par conséquent par rapport a la feuille plus petite, et sur cette bande on dépose un cordon continu qui remplit la "marche" et qui comprend une matiere adhésive qui empeche la diffusion de la vapeur d'eau. Les dimensions du cordon sont telles qu'il sert, lors du montage du pare-brise dans la carrosserie, à sa fixation sur un repli de la tôle de la carrosserie prévu cet effet. According to the invention a peripheral band of an opaque material is applied to the edges of the larger glass sheet, which therefore protrude relative to the smaller sheet, and on this strip is deposited a continuous bead which fills the "market" and which includes an adhesive material which prevents the diffusion of water vapor. The dimensions of the cord are such that it is used, when mounting the windshield in the bodywork, for fixing it to a fold in the sheet metal of the bodywork provided for this purpose.

On peut déposer le cordon d'adhésif dans la "marche" tout de suite après la fabrication du pare-brise dans l'atelier de fabrication. You can put the bead of adhesive in the "step" immediately after manufacturing the windshield in the manufacturing workshop.

De cette façon, il assure aussitôt une totale étanchéité de la feuille de plastique intercalaire vis- -vis de l'atmosphère. Ainsi, non seulement on évite a coup sûr toute altération de la feuille intercalaire par absorption éventuelle d'humidité pendant le transport et le stockage, mais également on protège les arêtes du vitrage, du moins celles de la plus petite feuille de verre. Une telle protection est particulière ment avantageuse puisque ces feuilles de verre plus petites sont généralement plus minces et par conséquent extrêmement sensibles aux endommagements mécaniques.In this way, it immediately ensures complete sealing of the interlayer plastic sheet vis-à-vis the atmosphere. Thus, not only is it sure to avoid any deterioration of the interlayer sheet by possible absorption of moisture during transport and storage, but also it protects the edges of the glazing, at least those of the smallest sheet of glass. Such protection is particularly advantageous since these smaller glass sheets are generally thinner and therefore extremely sensitive to mechanical damage.

L'invention présente également l'avantage, en -formant une "marche" entre les deux feuilles de verre et en la remplissant d'un adhésif qui déborde sur la feuille de verre de dimensions inférieures, de permettre de diminuer la profondeur du repli de -la tôle de carrosserie destiné a recevoir le vitrage. Non seulement on peut ainsi économiser de la tôle, mais surtout augmenter l'angle de vision disponible pour le conducteur. The invention also has the advantage, by forming a "step" between the two glass sheets and by filling it with an adhesive which overflows on the glass sheet of smaller dimensions, making it possible to reduce the depth of the fold of -the body sheet intended to receive the glazing. Not only can we save sheet metal, but above all increase the viewing angle available to the driver.

Quand le cordon d'adhésif déborde sur la feuille de verre de dimensions inférieures, il sert avantageusement en outre d'espaceur lors de l'empilement des vitrages. When the bead of adhesive overflows onto the sheet of glass of smaller dimensions, it advantageously also serves as a spacer when the glazing is stacked.

Selon une forme préférée de l'invention, on recouvre le cordon d'adhésif d'une feuille ou d'une bande de protection, par exemple en papier qu'on arrache juste avant de monter le pare-brise dans la carrosserie. According to a preferred form of the invention, the bead of adhesive is covered with a protective sheet or strip, for example of paper which is torn off just before mounting the windshield in the bodywork.

La bande en matériau opaque qui est déposée sur la périphérie de la face interne de la feuille de verre extérieure du vitrage peut par exemple se composer d'une couche d'émail, imprimée puis cuite sur le verre. Cette couche non seulement cache la couche adhésive qui se trouve derrière, mais avantageusement elle améliore en outre l'adné rence de la colle sur la feuille de verre. The strip of opaque material which is deposited on the periphery of the internal face of the outer glass sheet of the glazing may for example consist of a layer of enamel, printed and then baked on the glass. This layer not only hides the adhesive layer which is behind, but advantageously it also improves the adhesion of the adhesive on the glass sheet.

La suite de la description fera référence aux dessins annexés dans lesquels :
- la figure 1 représente une vue en coupe d'un vitrage feuilleté selon l'invention dans une première forme de réalisation,
- les figures 2 et 3 illustrent deux autres formes de réalisation de vitrage selon l'invention selon le rême-mode de représentation,
- la figure 4 représente un pare-brise en verre feuilleté selon l'invention après son montage dans la baie d'une carrosserie d'automobile.The remainder of the description will refer to the accompanying drawings in which:
FIG. 1 represents a sectional view of a laminated glazing according to the invention in a first embodiment,
FIGS. 2 and 3 illustrate two other embodiments of glazing according to the invention according to the same mode of representation,
- Figure 4 shows a laminated glass windshield according to the invention after mounting in the bay of an automobile body.

Le vitrage en verre feuilleté représenté a la figure 1 comprend une feuille de verre 1 qui après montage constitue la feuille de verre dirigée vers l'extérieur, et une feuille 2 qui après montage est dirigée vers l'intérieur de l'habitacle du véhicule. En général, a feuille 2 est plus mince que la feuille 1. Les deux feuilles 1 et 2 sont séparées par une feuille intercalaire en matière plastique 3. La feuille 2 est plus petite que la feuille 1 de sorte qu'il y a une différence de 1 à 2 cm environ entre leurs tranches respectives 4 et 5. La feuille en matière plastique 3, en polyvinylbutyral ou tout autre matériau comparable, a les mêmes dimensions que la feuille 2 et leurs tranches sont dans un même plan. The laminated glass glazing shown in FIG. 1 comprises a glass sheet 1 which, after assembly, constitutes the glass sheet directed towards the outside, and a sheet 2 which, after assembly, is directed towards the interior of the passenger compartment of the vehicle. In general, sheet 2 is thinner than sheet 1. The two sheets 1 and 2 are separated by a plastic interlayer sheet 3. Sheet 2 is smaller than sheet 1 so there is a difference from 1 to 2 cm approximately between their respective edges 4 and 5. The plastic sheet 3, of polyvinyl butyral or any other comparable material, has the same dimensions as the sheet 2 and their edges are in the same plane.

Sur les bords de la face de la feuille de verre 1 dirigée vers la feuille intercalaire 3, qui dépassent de la feuille de verre 2, est déposée une couche 7 de couleur opaque, par exemple une pate noire thermodurcissable. On trouve dans le commerce de telles pâtes convenant pour l'application envisagée. Parmi les pattes disponibles, on en choisit une qui présente une bonne adhérence a la colle utilisée. On peut le cas échéant, avant d'appliquer la pate sur la feuille de verre, la mélanger à des additifs connus en soi qui améliorent l'adhérence. On applique la patte de façon connue, par exemple par sérigraphie.Selon une forme préférée de l'invention, on utilise une pate qu'on applique sur la feuille de verre avant le bombage et que l'on cuit au cours de cette opération grâce à la température élevée nécessaire à cet effet. On the edges of the face of the glass sheet 1 directed towards the intermediate sheet 3, which protrude from the glass sheet 2, is deposited a layer 7 of opaque color, for example a black thermosetting paste. There are commercially available such pastes suitable for the intended application. Among the available legs, we choose one that has good adhesion to the glue used. It is possible, if necessary, before applying the paste to the glass sheet, mix it with additives known per se which improve the adhesion. The leg is applied in a known manner, for example by screen printing. According to a preferred form of the invention, a paste is used which is applied to the glass sheet before bending and which is baked during this operation thanks to at the high temperature required for this purpose.

On remplit l'espace limité par la tranche 4 de la feuille de verre 2 et la couche 7 avec un cordon d'adhésif 10 qui peut être par exemple directement injecté dans cet espace au moyen d'une buse d'injection. On applique la matière adhésive pour obtenir un cordon 10 qui déborde en épaisseur par rapport à -la surface de la feuille de verre 2 et peut ainsi servir directement à la fixation du vitrage sur la carrosserie. Avantageusement, le cordon d'adhésif se compose d'une matiere qui conserve un certain temps son aptitude à la déformation plastique, et ne durcit qu'après le montage du pare-brise dans la baie. On peutobtenir un tel résultat par exemple en recouvrant le cordon d'adhésif après son dépôt d'une feuille de protection étanche à l'air. The space limited by the edge 4 of the glass sheet 2 and the layer 7 is filled with a bead of adhesive 10 which can, for example, be directly injected into this space by means of an injection nozzle. The adhesive material is applied to obtain a bead 10 which extends in thickness relative to the surface of the glass sheet 2 and can thus be used directly for fixing the glazing to the bodywork. Advantageously, the adhesive bead consists of a material which retains its ability to plastic deformation for a certain time, and does not harden until after the windshield has been mounted in the bay. Such a result can be obtained, for example, by covering the bead of adhesive after deposition with an airtight protective sheet.

Le cordon d'adhésif 10 peut aussi se composer d'une matière qui durcit après application, mais qui toutefois peut être ramollie juste avant le montage du pare-brise. Il peut par exemple s'agir d'une matière thermoplastique que l'on chauffe à sa température de ramollissement avant le montage du pare-brise. De même, on peut utiliser des adhésifs susceptibles d'être plastifiés ou activés par traitement avec un plastifiant ou un solvant. The adhesive bead 10 can also be made of a material which hardens after application, but which can however be softened just before mounting the windscreen. It may for example be a thermoplastic material which is heated to its softening temperature before mounting the windshield. Likewise, adhesives capable of being plasticized or activated by treatment with a plasticizer or a solvent can be used.

Selon un procédé particulièrement adapté pour l'installation de tels pare-brise, on peut, avant le montage du pare-brise dans la baie, déposer sur le repli de la tole prévu pour recevoir le pare-brise ou sur le cordon d'adhésif lui-meme, une couche de colle qui à elle seule plastifie le cordon d'adhésif tout en étant apte à y adhérer, si bien qu'il se forme une liaison durable et étanche entre cette couche de colle plastifiante, le cordon d'adhésif et le repli de la baie de la carrosserie. According to a process particularly suitable for the installation of such windshields, it is possible, before mounting the windshield in the bay, to deposit on the fold of the sheet provided for receiving the windshield or on the adhesive bead itself, a layer of glue which alone plasticizes the adhesive bead while being able to adhere to it, so that a durable and tight connection is formed between this layer of plasticizing glue, the bead of adhesive and the withdrawal of the body bay.

Dans la forme de réalisation représentée à la figure 2, la feuille intercalaire 13 présente des dimensions inférieures à celles de la feuille de verre 2. Son bord est décalé de quelques millimetres par rapport à la tranche 4 de la feuille de verre 2. Il en résulte la création d'une rainure 14 autour de la feuille intercalaire 13 et entre les deux feuilles de verre 1 et 2, dans laquelle pénètre une partie de l'adhésif 20. La présence de cette rainure assure ainsi une étanchéité particulièrement bonne de la feuille intercalaire 13 vis-à-vis de l'atmosphère environnante. In the embodiment shown in FIG. 2, the intermediate sheet 13 has dimensions smaller than those of the glass sheet 2. Its edge is offset by a few millimeters relative to the edge 4 of the glass sheet 2. It results in the creation of a groove 14 around the intermediate sheet 13 and between the two glass sheets 1 and 2, into which part of the adhesive 20 penetrates. The presence of this groove thus ensures a particularly good sealing of the sheet insert 13 vis-à-vis the surrounding atmosphere.

On choisit la matière constitutive du cordon 20 selon les mêmes criteres que ceux mentionnés pour l'exemple de la figure 1. The material constituting the cord 20 is chosen according to the same criteria as those mentioned for the example in FIG. 1.

Dans le cas ou, au cours de la fabrication du pare-brise feuilleté; on applique le cordon d'adhésif avant le traitement thermique du vitrage, la rainure due à la réduction des dimensions de la feuille intercalaire 13 se révèle également avantageuse. En effet, l'étanchéité à l'air de la feuille intercalaire 13, réalisée par la présence du cordon d'adhésif 20, s'oppose à sa ventilation, avantageuse lors du traitement thermique. On pourrait écarter cet inconvénient en laissant libre un interstice de 1 à 2 mm entre le cordon d'adhésif 20 et la feuille interealaireS et en ne le remplissant avec le même matériau adhésif qu'après le traitement thermique. In the event that, during the manufacture of the laminated windscreen; the bead of adhesive is applied before the glazing is heat treated, the groove due to the reduction in the dimensions of the interlayer sheet 13 also proves to be advantageous. Indeed, the airtightness of the interlayer sheet 13, produced by the presence of the adhesive bead 20, is opposed to its ventilation, which is advantageous during the heat treatment. This drawback could be avoided by leaving a gap of 1 to 2 mm between the bead of adhesive 20 and the interalareal sheet and by filling it with the same adhesive material only after the heat treatment.

Pour ménager un tel interstice entre le cordon 20 et la feuille intercalaire, il est possible d'introduire à ce niveau un cordon étroit dont la surface est lisse et non collante, et que l'on retire avant le traitement thermique. Après ce traitement; on comble le trou laisse avec l'adhésif constitutif du cordon. To provide such a gap between the bead 20 and the intermediate sheet, it is possible to introduce at this level a narrow bead whose surface is smooth and non-sticky, and which is removed before the heat treatment. After this treatment; the hole left is filled with the adhesive constituting the cord.

Le vitrage feuilleté represente à la figure 3 comprend égal en ment une première feuille de verre 1 dirigée vers l'extérieur et une deuxième feuille 2 dirigée vers lllntérieur de l'habitacle du vehicul-e, séparées par une feuille intercalaire en matière plastique 13. La feuille 2 est plus petite que la feuille 1. On dispose sur les bords de la face intérieure de la feuille 1 qui dépassent de la feuille 2 une couche opaque 7 en émail noir. La feuille 2 est recouverte sur la face dirigée vers l'intérieur de l'habitacle du véhicule d'une feuille de protection 8 contre les éclats de verre, en polyuréthane souple, trans-  The laminated glazing represented in FIG. 3 also includes a first sheet of glass 1 directed towards the outside and a second sheet 2 directed towards the interior of the passenger compartment of the vehicle, separated by an intermediate sheet of plastic material 13. The sheet 2 is smaller than the sheet 1. There is an opaque layer 7 made of black enamel on the edges of the inner face of the sheet 1 which protrude from the sheet 2. The sheet 2 is covered on the side facing the interior of the vehicle interior with a sheet 8 for protection against glass fragments, made of flexible polyurethane, trans-

Claims (8)

REVENDICATIONS 1. Vitrage feuilleté5 notamment pare-brise pour véhicule automobile comprenant deux feuilles de verre (19 2) et un intercalaire (13) en matière plastique, caractérisé en ce que la feuille de verre (2) dirigée vers l'intérieur de l'habitacle du véhicule a des dimensions plus petites que la feuille de verre (1) dirigée vers l'extérieur, les bords orientés vers l'intérieur de la feuille extérieure étant recouverts d'une bande périphérique en un matériau opaque, cette bande étant elle-même recouverte d'un cordon (10, 20) adhésif empêchant la diffusion de la vapeur d'eau dans l'intercalaire, ce cordon ayant des dimensions telles qu'il remplisse l'espace vide laissé par la feuille (2) et l'intercalaire en retrait et qu'il puisse servir à la fixation du vitrage sur un repli (22) de la baie de carrosserie lors de son montage. 1. Laminated glazing5 in particular windshield for motor vehicle comprising two sheets of glass (19 2) and an interlayer (13) made of plastic, characterized in that the glass sheet (2) directed towards the interior of the passenger compartment of the vehicle has dimensions smaller than the glass sheet (1) directed towards the outside, the edges oriented towards the inside of the external sheet being covered with a peripheral strip of an opaque material, this strip itself being covered with an adhesive bead (10, 20) preventing the diffusion of water vapor in the interlayer, this bead having dimensions such that it fills the empty space left by the sheet (2) and the interlayer set back and that it can be used to fix the glazing to a fold (22) of the bodywork bay during its assembly. 2. Vitrage selon la revendication 1, caractérisé en ce que la couche (7) est constituée d'un émail que l'on peut déposer par sérigraphie. 2. Glazing according to claim 1, characterized in that the layer (7) consists of an enamel which can be deposited by screen printing. 3. Vitrage selon la revendication 2, caractérisé en ce que l'émail utilisé présente, vis-à-vis du cordon d'adhésif (10, 20) des propriétés d'adhérence meilleures que celles du verre. 3. Glazing according to claim 2, characterized in that the enamel used has, vis-à-vis the adhesive bead (10, 20) better adhesion properties than those of glass. 4. Vitrage selon l'une des revendications 1 à 3, caractérisé en ce que le cordon d'adhésif (10, 20) se compose d'une matière synthétique pouvant ramollir avant le montage du vitrage dans la carrosserie. 4. Glazing according to one of claims 1 to 3, characterized in that the adhesive bead (10, 20) consists of a synthetic material which can soften before mounting the glazing in the bodywork. 5. Vitrage selon l'une des revendications 1 à 4, caractérisé en ce que la feuille intercalaire plastique (13) disposée entre les deux feuilles de verre (1, 2) est plus petite que la feuille de verre (2). 5. Glazing according to one of claims 1 to 4, characterized in that the plastic interlayer sheet (13) disposed between the two glass sheets (1, 2) is smaller than the glass sheet (2). 6. Vitrage selon l'une des revendications 1 à 5, caractérisé en ce qu'on recouvre le cordon (10 > 20j d'une feuille de protection que l'on peut arracher. 6. Glazing according to one of claims 1 to 5, characterized in that the cord (10> 20d) is covered with a protective sheet which can be torn off. 7. Vitrage selon l'une des revendications 1 à 65 caractérisé en ce que la tranche (5) de la feuille de verre (1) présente un profil arrondi. 7. Glazing according to one of claims 1 to 65 characterized in that the edge (5) of the glass sheet (1) has a rounded profile. 8. Procédé de montage d'un vitrage selon l'une des revendications 1 à 7 dans une baie de carrosserie, caractérisé en ce qu'on applique sur le repli (22) de la baie de carrosserie et/ou sur le cordon d'adhésif (10, 20) une couche de colle (24) contenant un solvant et apte à adhérer audit cordon, qui ramollit ledit cordon et réalise avec lui une liaison durable.  8. A method of mounting a glazing according to one of claims 1 to 7 in a body bay, characterized in that one applies to the fold (22) of the body bay and / or on the cord adhesive (10, 20) a layer of glue (24) containing a solvent and capable of adhering to said bead, which softens said bead and achieves a lasting bond with it. parent, et possédant des propriétés autocicatrisantes. On dispose le cordon d'adhésif 20 dans l'espace libre entre la tranche de la feuille 2 et le bord en saillie de la feuille 1. L'adhésif remplit également la rainure 14 présente du fait de la taille réduite de la feuille plastique 13 par rapport à celle de la feuille 2.parent, and having self-healing properties. The adhesive bead 20 is placed in the free space between the edge of the sheet 2 and the projecting edge of the sheet 1. The adhesive also fills the groove 14 present due to the reduced size of the plastic sheet 13 compared to that of sheet 2. Dans cette forme de réalisation, l'invention présente un avantage supplémentaire qui est d'une importance décisive pour le montage de tels pare-brise par simple collage. Il est en effet possible d'appliquer sur la couche opaque 7 une couche de fond, avant d'appliquer le cordon d'adhésif 20 sans que pour cela la couche de fond vienne en contact de la pellicule de protection 8. In this embodiment, the invention has an additional advantage which is of decisive importance for the mounting of such windshields by simple bonding. It is indeed possible to apply a base layer to the opaque layer 7, before applying the adhesive bead 20 without the bottom layer coming into contact with the protective film 8 for this purpose. Il s'est en effet avéré que la couche de fond exerce un effet très néfaste sur la pellicule de protection 8 lorsqu'elles sont au contact l'une de l'autre, ce qui est pratiquement inévitable avec les procédés usuels. It has indeed been found that the base layer exerts a very harmful effect on the protective film 8 when they are in contact with each other, which is practically inevitable with the usual methods. Les pare-brise selon l'invention conviennent particulierement pour leur encastrement à fleur de carrosserie sans introduction de profilés supplémentaires ou d'éléments ornementaux recouvrant les bords du vitrage. Puisque la couche 7 masque déjà la couche d'adhésif, il n'est même plus nécessaire de la dissimuler par une ornementation extérieure. The windshields according to the invention are particularly suitable for being flush with the bodywork without introducing additional profiles or ornamental elements covering the edges of the glazing. Since layer 7 already masks the adhesive layer, it is no longer even necessary to conceal it by external ornamentation. Il est néanmoins recommandé, puisque de cette façon la tranche 5 de la feuille de verre 1 est visible, de lui donner un profil arrondi.It is nevertheless recommended, since in this way the edge 5 of the glass sheet 1 is visible, to give it a rounded profile. La figure 4 représente un pare-brise selon la figure 2 monté dans une baie. Pour encastrer le pare-brise, on applique sur le repli 22 de la tôle de la baie une couche 24 relativement fine et constituée d'une colle contenant un solvant. Quand, au moment du montage, le cordon d'adhésif 20 vient en contact avec cette couche 24, ils réagissent de telle façon que le cordon se ramollit et prend même éventuellement un aspect irrégulier. Après durcissement, le cordon d'adhésif 20 a réalisé avec la couche 24 une liaison durable. On coince, pour la fermer, un joint creux élastique 26, dans la fente qui subsiste entre la tranche 5 du pare-brise et la partie 25 du châssis de la baie qui lui fait vis-a-vis.  Figure 4 shows a windshield according to Figure 2 mounted in a bay. To embed the windshield, a relatively thin layer 24 consisting of an adhesive containing a solvent is applied to the fold 22 of the bay sheet. When, at the time of assembly, the bead of adhesive 20 comes into contact with this layer 24, they react in such a way that the bead softens and even possibly takes on an irregular appearance. After hardening, the adhesive bead 20 has formed a lasting bond with the layer 24. In order to close it, an elastic hollow seal 26 is wedged in the slot which remains between the edge 5 of the windshield and the part 25 of the chassis of the bay which faces it.
FR8305326A 1983-03-31 1983-03-31 SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES Expired FR2543535B1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR8305326A FR2543535B1 (en) 1983-03-31 1983-03-31 SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES
DE3409831A DE3409831A1 (en) 1983-03-31 1984-03-17 Laminated glass windscreen for motor vehicles
US06/592,895 US4551372A (en) 1983-03-31 1984-03-23 Laminated safety glass
BR8401439A BR8401439A (en) 1983-03-31 1984-03-28 LEAF GLASS, ESPECIALLY WINDOWS FOR AUTOMOBILE VEHICLES AND ASSEMBLY PROCESS BY GLUING
CA000450669A CA1245249A (en) 1983-03-31 1984-03-28 Safety glass, to wit for automotive windshield
KR1019840001611A KR920000770B1 (en) 1983-03-31 1984-03-28 Laminated safety glass
EP19840400642 EP0121479B1 (en) 1983-03-31 1984-03-30 Security glass, especially a vehicle windshield
JP59061256A JPS59190019A (en) 1983-03-31 1984-03-30 Safety window glass for car and method of mounting said window glass
AT84400642T ATE25042T1 (en) 1983-03-31 1984-03-30 SAFETY GLASS, IN PARTICULAR WINDSHIELD OF A MOTOR VEHICLE.
ZA842385A ZA842385B (en) 1983-03-31 1984-03-30 Laminated safety glass
DE8484400642T DE3462102D1 (en) 1983-03-31 1984-03-30 Security glass, especially a vehicle windshield
ES1984286962U ES286962Y (en) 1983-03-31 1984-03-30 SAFETY GLASS.
AU26306/84A AU571208B2 (en) 1983-03-31 1984-04-02 Laminated glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8305326A FR2543535B1 (en) 1983-03-31 1983-03-31 SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES

Publications (2)

Publication Number Publication Date
FR2543535A1 true FR2543535A1 (en) 1984-10-05
FR2543535B1 FR2543535B1 (en) 1986-08-14

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FR8305326A Expired FR2543535B1 (en) 1983-03-31 1983-03-31 SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES

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JP (1) JPS59190019A (en)
AU (1) AU571208B2 (en)
DE (1) DE3409831A1 (en)
FR (1) FR2543535B1 (en)
ZA (1) ZA842385B (en)

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Publication number Publication date
DE3409831A1 (en) 1984-10-04
JPH0432790B2 (en) 1992-06-01
JPS59190019A (en) 1984-10-27
AU2630684A (en) 1984-10-04
AU571208B2 (en) 1988-04-14
FR2543535B1 (en) 1986-08-14
ZA842385B (en) 1984-11-28

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