WO2017207914A1 - Laminated glazing with a borderless functional layer - Google Patents

Laminated glazing with a borderless functional layer Download PDF

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Publication number
WO2017207914A1
WO2017207914A1 PCT/FR2017/051344 FR2017051344W WO2017207914A1 WO 2017207914 A1 WO2017207914 A1 WO 2017207914A1 FR 2017051344 W FR2017051344 W FR 2017051344W WO 2017207914 A1 WO2017207914 A1 WO 2017207914A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
sheet
laminated glazing
sheets
functional layer
Prior art date
Application number
PCT/FR2017/051344
Other languages
French (fr)
Inventor
Arnaud Huignard
Original Assignee
Saint-Gobain Glass France
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 filed Critical Saint-Gobain Glass France
Priority to CN201780033702.1A priority Critical patent/CN109153233B/en
Priority to MX2018014701A priority patent/MX2018014701A/en
Priority to EP17732515.6A priority patent/EP3463870A1/en
Priority to KR1020227003950A priority patent/KR102433607B1/en
Priority to KR1020187034331A priority patent/KR20190012170A/en
Publication of WO2017207914A1 publication Critical patent/WO2017207914A1/en

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Classifications

    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • 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
    • B32B17/10009—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
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening
    • 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
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • 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
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive

Definitions

  • the present invention relates to laminated glazing for all applications, especially for transport vehicles and in particular as automobile windshields, or for the building, and which comprise a functional layer such as heatable (anti-freeze, anti-fog) and / or sunscreen. that is to say, intended to reflect a more or less significant fraction of the solar radiation to limit the heating of a passenger compartment of a transport vehicle or a building enclosure.
  • a functional layer such as heatable (anti-freeze, anti-fog) and / or sunscreen.
  • the term "layer” frequently refers to a stack of thin layers of thicknesses as small as of the order of a few nanometers, in particular formed by a vacuum process, in particular by magnetron assisted sputtering.
  • a heatable functional layer is electroconductive and connected to a current source via bus bars formed in contact with the layer.
  • a functional layer designates, for example, in a privileged manner a ClimaCoat® stack marketed by Saint-Gobain Sekurit, which is heatable, anti-fog / anti-fog and antisolar. This type of stacking saves 0.1 1/100 km by reducing the need to use air conditioning.
  • It may be a stack of three layers of silver, as described in the application WO 2010/037968, with two or four layers of silver, of any other layer / functional heatable stack such as ITO (oxide indium doped with tin) but also non heatable.
  • ITO oxide indium doped with tin
  • the faces of the glass sheets of a laminated glazing are numbered from 1 for the face in contact with the external atmosphere, then 2 for the face of the same glass sheet oriented towards the passenger compartment of the vehicle transport or inside the building, then from the outside to the inside, consecutively 3 and 4 for both sides of the second glass sheet, and so on if more than two sheets of glass are present, all the glass sheets being glued in pairs by a polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA) interlayer adhesive or the like.
  • PVB polyvinyl butyral
  • EVA ethylene-vinyl acetate
  • the functional layer is unglazed, that is to say eliminated on a peripheral fraction of the surface of the glazing, for example with a wire brush, it may be necessary for the sake of aesthetics to hide the edge of the glass.
  • the functional layer unmasked from the outside, for example by depositing at the periphery of the face 2 of the laminated glazing (inner face of the first outer glass sheet) an opaque enamel peripheral band, for example black.
  • the deposition of a functional layer in face 2 of a laminated glazing can be advantageous compared to a deposition in face 3: obviously when it is a deicing layer, bring the heating layer of the frost is advantageous.
  • the object of the invention is therefore to provide improved functional laminated glazings with esthetic qualities that are at least preserved.
  • the subject of the invention is a laminated glazing unit comprising a first and a second glass sheet bonded to one another by an interlayer adhesive layer, characterized in that the face of the first glass sheet facing the second comprises an opaque enamel peripheral strip and an ungured functional layer whose edge covers the peripheral enamel band being entirely located inside the surface thereof, and that the second glass sheet has a thickness strictly less than 1, 4 mm.
  • the opaque enamel peripheral band hides the edge of the functional layer unmasked from the outside.
  • the deicing efficiency is increased compared to a deicing layer on the face 3 of the glazing, and therefore further away from the frost to be removed; there is no screen effect of the interlayer adhesive layer unlike a deicing layer in front 3.
  • the first glass sheet has a thickness of at least 1.4 mm and is not quenched.
  • a relatively large thickness makes the handling and implementation of the sheet easier on an industrial scale.
  • the tools for depositing layers, processing ... glass sheets on industrial chains, are adapted to these thicknesses.
  • the functional layer deposited on the first glass sheet perfectly resists bending of the sheet and is not degraded at all, it is particularly advantageous to be able to deposit it on a flat substrate; it is known for example that the deposition of a silver trilayer stack (Ag) on a curved substrate leads to a control of the optical properties of the extremely difficult stack, and therefore to a very low deposition efficiency.
  • Ag silver trilayer stack
  • the second glass sheet has a thickness at most equal to 1.1 mm. This arrangement reduces the weight of the final laminated glazing.
  • the display devices on the inner face of the laminated glazing such as head-up displays (HUD -) on the windshields, the fineness of the inner glass sheet induced an almost superposition of the images reflected on the faces 4 and 2 of the laminated glazing, in other words a virtual disappearance of ghost images (ghost images) or double images.
  • HUD - head-up displays
  • the second glass sheet is a thin glass of thickness at most equal to 1.1 mm
  • depositing the functional layer on the first glass is particularly advantageous.
  • the conventional industrial thin-layer stacking deposition lines such as the ClimaCoat® product
  • magnetron-assisted sputtering being adapted to produce glasses of PLF (Full Width Float) thickness greater than or equal to 1, 4 mm
  • deposit on glasses of thickness less than or equal to 1, 1 mm would require substantial modifications of said lines, especially for all glass handling steps (stripping / stacking, conveying, cutting). Otherwise, the production yields would be greatly degraded (glass breaks, deposition efficiency lower than the usual yields), which would not be economically profitable.
  • a thin glass sheet in an application of the type of those of the invention, is preferably mechanically reinforced, especially hardened chemical.
  • depositing a layer on a chemical toughened glass can only be done after chemical quenching. Indeed, it is impossible to deposit the layer or the stack before performing the chemical quenching, because it would destroy many layers / functional stacks such as those mentioned above. above inhomogeneously.
  • the quenching would then be asymmetrical because of the presence of an alkali barrier layer in the functional stack; and asymmetric ion exchange between the two faces of the glass would result in asymmetric mechanical stresses, and finally, curl, rippling on the glass. It is therefore imperative to form the functional layer on the substrate already chemically quenched.
  • the bending of a chemically toughened glass sheet would lead to a loss of the chemical quenching (rehomogenization of the ions by thermal diffusion), and consequently reduce the mechanical strength of the thin glass, the chemical quenching is necessarily carried out after the bending the substrate.
  • Deposition of a functional layer on a thin sheet of chemically hardened thin glass would therefore be performed on the curved substrate, which is extremely unfavorable as explained above.
  • the use of a thin glass sheet in a laminated glazing therefore encourages the functional layer to be deposited on another sheet of glass of the relatively thick, flat laminated glazing before it is bent.
  • the invention further relates to a method of manufacturing a laminated glazing as described above.
  • a first method comprises the operations of:
  • first glass sheet of dimension at least equal to that of a primitive and at most that of a PLF (6 mx 3.21 m) one or more bands of opaque enamel according to a geometry delimiting a portion less than the periphery of the laminated glazing or windows, by screen printing or the like;
  • the opaque enamel is generally black and of known compositions; instead of opaque enamel, we can use a silicate paint, black for example.
  • Precooking at 500 - 600 ° C has a duration of 1 to 5 min and can be replaced by any suitable drying means without departing from the scope of the invention.
  • the first operations of the process, up to the deposition of the functional layer included, are performed indifferently on the primitive of the first glass sheet or conveniently on a glass of larger dimensions from which several primitives can be cut.
  • Such larger dimensions may be those of the Full Float Width (PLF) (3.21 m X 6 m) or smaller areas of which one side is 3.21 m (for example 3.21 m X 2 m), in which one can cut several primitives of 1, 50 m X 1 m for example.
  • Cutting the primitive of the first glass sheet may be the first step, or performed at any time before the introduction into an assembly line of laminated glass.
  • the removal of the functional layer is carried out with a wire brush or equivalent.
  • the bus bars can in known manner be made of silver.
  • the functional layer is highly resistant to hot bending.
  • the opaque enamel tape hides from an outside view the peripheral boundary of the ungapped functional layer as well as bus-bars.
  • a second method comprises the operations of:
  • the second sheet of glass is subjected to chemical quenching
  • a second opaque enamel band is deposited on the bus bars or the functional layer in a geometry delimiting a part at less than the periphery of the laminated glazing, it is dried and precured at a temperature between 500 and 600 ° C; this second opaque enamel band has the function of hiding the bus bars and the peripheral boundary of the functional layer unmasked from a view of the passenger compartment of the vehicle, the interior of the building ..., which does not This is not always necessary depending on the configuration of the body bay or the frame of the laminated glazing.
  • a laminated windshield of a motor vehicle is manufactured in accordance with the foregoing teaching.
  • the 2.1 mm thick glass sheet is intended to be in contact with the outside atmosphere, that of 1 mm thick with the passenger compartment of the vehicle.
  • a strip of black peripheral enamel is deposited by screen printing
  • the glass sheet is precooked at a temperature of approximately 550 ° C. for 1 to 5 min in order to completely eliminate the organic binders and to precook the black enamel;
  • ClimaCoat® stack sold by the Saint-Gobain Sekurit Company, which is heatable, anti-fog / anti-fog and antisolar, is deposited on the glass sheet by magnetic field-assisted sputtering under reduced pressure; it is a stack of three layers of silver, as described in the application WO 2010/037968.
  • the Full Float Width (PLF) glass sheet is then cut into a primer from the glass.
  • This primitive and that of the second 1 mm thick glass sheet are introduced into an assembly line of laminated glazings.
  • the primitives of the first and second glass sheets are cut to their final shape and passed through the washing machine.
  • the second glass sheet 1 mm thick is chemically quenched.
  • the laminated glazing unit is assembled by means of a 0.76 mm thick layer of polyvinyl butyral (PVB), by the implementation of various possible and known combinations of thermal cycling means - temperature profiles, increased pressure means and / or reduced.
  • PVB polyvinyl butyral
  • the laminated glazing provides excellent anti-sun and sunscreen functions sought; its aesthetic appearance meets current requirements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

The invention relates to: - a laminated glazing comprising a first and a second sheet of glass bonded together by an adhesive interlayer, characterized in that the surface of the first sheet of glass facing the second sheet comprises a peripheral band of opaque enamel and a borderless functional layer the edge of which covers the peripheral enamel band while being entirely located inside the surface of the band, and in that the second sheet of glass has a thickness less than 1.4 mm; - two methods for manufacturing this laminated glazing; - and the application of this laminated glazing for a transport vehicle, a building, interior design or street furniture, and particularly as a windshield for a motor vehicle.

Description

VITRAGE FEUILLETE A COUCHE FONCTIONNELLE  LAMINATED GLAZING WITH FUNCTIONAL LAYER
DEMARGEE  DEMARGEE
La présente invention a trait aux vitrages feuilletés pour toutes applications, notamment pour véhicule de transport et en particulier comme pare-brise automobile, ou pour le bâtiment, et qui comprennent une couche fonctionnelle telle que chauffable (antigivre, antibuée) et/ou antisolaire c'est-à- dire destinée à réfléchir une fraction plus ou moins importante du rayonnement solaire pour limiter le réchauffement d'un habitacle de véhicule de transport ou d'une enceinte de bâtiment. The present invention relates to laminated glazing for all applications, especially for transport vehicles and in particular as automobile windshields, or for the building, and which comprise a functional layer such as heatable (anti-freeze, anti-fog) and / or sunscreen. that is to say, intended to reflect a more or less significant fraction of the solar radiation to limit the heating of a passenger compartment of a transport vehicle or a building enclosure.
Dans la suite, le terme « couche » désigne fréquemment un empilement de couches minces d'épaisseurs aussi petites que de l'ordre de quelques nanomètres, notamment formées par un procédé sous vide, notamment par pulvérisation cathodique assistée par magnétron. Une couche fonctionnelle chauffable est électroconductrice et reliée à une source de courant par l'intermédiaire de bus bars formés en contact avec la couche. Dans le cadre de l'invention, une couche fonctionnelle désigne par exemple de manière privilégiée un empilement ClimaCoat® commercialisé par la Société Saint- Gobain Sekurit, qui est chauffable, antigivre/antibuée et antisolaire. Ce type d'empilement permet d'économiser 0,1 1/100 km en réduisant la nécessité d'utilisation de la climatisation. Il peut s'agir d'un empilement à trois couches d'argent, tel que décrit dans la demande WO 2010/037968, à deux ou quatre couches d'argent, de tout autre couche/empilement fonctionnel chauffable tel qu'ITO (oxyde d'indium dopé à l'étain) mais aussi non chauffable.  In the following, the term "layer" frequently refers to a stack of thin layers of thicknesses as small as of the order of a few nanometers, in particular formed by a vacuum process, in particular by magnetron assisted sputtering. A heatable functional layer is electroconductive and connected to a current source via bus bars formed in contact with the layer. In the context of the invention, a functional layer designates, for example, in a privileged manner a ClimaCoat® stack marketed by Saint-Gobain Sekurit, which is heatable, anti-fog / anti-fog and antisolar. This type of stacking saves 0.1 1/100 km by reducing the need to use air conditioning. It may be a stack of three layers of silver, as described in the application WO 2010/037968, with two or four layers of silver, of any other layer / functional heatable stack such as ITO (oxide indium doped with tin) but also non heatable.
De manière conventionnelle, les faces des feuilles de verre d'un vitrage feuilleté sont numérotées à partir de 1 pour la face en contact avec l'atmosphère extérieure, puis 2 pour la face de la même feuille de verre orientée vers l'habitacle du véhicule de transport ou l'intérieur du bâtiment, puis de l'extérieur vers l'intérieur, consécutivement 3 et 4 pour les deux faces de la seconde feuille de verre, et ainsi de suite en cas de présence de plus de deux feuilles de verre, toutes les feuilles de verre étant collées deux à deux par un adhésif intercalaire du type polyvinylbutyral (PVB), éthylène-acétate de vinyle (EVA) ou équivalent. Selon une première approche, on peut envisager le dépôt d'une couche fonctionnelle sur la face 3 (face extérieure de la seconde feuille de verre). Dans le cas où la couche fonctionnelle est démargée, c'est-à-dire éliminée sur une fraction périphérique de la surface du vitrage, par exemple avec une brosse métallique, il peut être nécessaire dans un souci d'esthétique de cacher le bord de la couche fonctionnelle démargée vue de l'extérieur, par exemple en déposant à la périphérie de la face 2 du vitrage feuilleté (face intérieure de la première feuille de verre -extérieure-) une bande périphérique d'émail opaque, par exemple noir. Conventionally, the faces of the glass sheets of a laminated glazing are numbered from 1 for the face in contact with the external atmosphere, then 2 for the face of the same glass sheet oriented towards the passenger compartment of the vehicle transport or inside the building, then from the outside to the inside, consecutively 3 and 4 for both sides of the second glass sheet, and so on if more than two sheets of glass are present, all the glass sheets being glued in pairs by a polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA) interlayer adhesive or the like. According to a first approach, it is possible to envisage the deposition of a functional layer on the face 3 (outer face of the second glass sheet). In the case where the functional layer is unglazed, that is to say eliminated on a peripheral fraction of the surface of the glazing, for example with a wire brush, it may be necessary for the sake of aesthetics to hide the edge of the glass. the functional layer unmasked from the outside, for example by depositing at the periphery of the face 2 of the laminated glazing (inner face of the first outer glass sheet) an opaque enamel peripheral band, for example black.
Cependant, le dépôt d'une couche fonctionnelle en face 2 d'un vitrage feuilleté peut être avantageux par rapport à un dépôt en face 3 : à l'évidence quand il s'agit d'une couche dégivrante, rapprocher la couche chauffante du givre est avantageux. L'invention a donc eu pour but la réalisation de vitrages feuilletés fonctionnels améliorés et aux qualités esthétiques pour le moins préservées.  However, the deposition of a functional layer in face 2 of a laminated glazing can be advantageous compared to a deposition in face 3: obviously when it is a deicing layer, bring the heating layer of the frost is advantageous. The object of the invention is therefore to provide improved functional laminated glazings with esthetic qualities that are at least preserved.
A cet effet l'invention a pour objet un vitrage feuilleté comprenant une première et une seconde feuilles de verre collées l'une à l'autre par une couche adhésive intercalaire, caractérisé en ce que la face de la première feuille de verre orientée vers la seconde comprend une bande périphérique d'émail opaque et une couche fonctionnelle démargée dont le bord recouvre la bande périphérique d'émail en étant entièrement situé à l'intérieur de la surface de celle-ci, et en ce que la seconde feuille de verre a une épaisseur strictement inférieure à 1 ,4 mm. Ainsi, en supposant que c'est la face 2 du vitrage feuilleté qui est munie de l'émail et de la couche fonctionnelle, la bande périphérique d'émail opaque cache le bord de la couche fonctionnelle démargée vue de l'extérieur. De plus l'efficacité de dégivrage est accrue par rapport à une couche dégivrante en face 3 du vitrage, donc plus éloignée du givre à éliminer ; il n'y a pas d'effet d'écran de la couche adhésive intercalaire contrairement à une couche dégivrante en face 3.  To this end, the subject of the invention is a laminated glazing unit comprising a first and a second glass sheet bonded to one another by an interlayer adhesive layer, characterized in that the face of the first glass sheet facing the second comprises an opaque enamel peripheral strip and an ungured functional layer whose edge covers the peripheral enamel band being entirely located inside the surface thereof, and that the second glass sheet has a thickness strictly less than 1, 4 mm. Thus, assuming that it is the face 2 of the laminated glazing which is provided with the enamel and the functional layer, the opaque enamel peripheral band hides the edge of the functional layer unmasked from the outside. In addition the deicing efficiency is increased compared to a deicing layer on the face 3 of the glazing, and therefore further away from the frost to be removed; there is no screen effect of the interlayer adhesive layer unlike a deicing layer in front 3.
De préférence, la première feuille de verre a une épaisseur au moins égale à 1 ,4 mm et n'est pas trempée. Une telle épaisseur relativement importante rend la manipulation et la mise en œuvre de la feuille plus aisée à l'échelle industrielle. Les outils de dépôt de couches, transformation... des feuilles de verre sur les chaînes industrielles, sont adaptés à ces épaisseurs. Dans la mesure où la couche fonctionnelle déposée sur la première feuille de verre résiste parfaitement au bombage de la feuille et n'en est pas du tout dégradée, il est particulièrement avantageux de pouvoir la déposer sur un substrat plat ; on sait en effet par exemple que le dépôt d'un empilement tricouche argent (Ag) sur un substrat bombé conduit à un contrôle des propriétés optiques de l'empilement extrêmement difficile, et par conséquent à un rendement de dépôt très faible. Preferably, the first glass sheet has a thickness of at least 1.4 mm and is not quenched. Such a relatively large thickness makes the handling and implementation of the sheet easier on an industrial scale. The tools for depositing layers, processing ... glass sheets on industrial chains, are adapted to these thicknesses. Insofar as the functional layer deposited on the first glass sheet perfectly resists bending of the sheet and is not degraded at all, it is particularly advantageous to be able to deposit it on a flat substrate; it is known for example that the deposition of a silver trilayer stack (Ag) on a curved substrate leads to a control of the optical properties of the extremely difficult stack, and therefore to a very low deposition efficiency.
Dans une réalisation avantageuse, la seconde feuille de verre a une épaisseur au plus égale à 1 ,1 mm. Cette disposition permet de diminuer le poids du vitrage feuilleté final. De plus, dans les dispositifs d'affichage sur la face intérieure du vitrage feuilleté, tels que les dispositifs d'affichage tête haute (Head Up Display - HUD -) sur les pare-brise automobiles, la finesse de la feuille de verre intérieure induit une quasi superposition des images réfléchies sur les faces 4 et 2 du vitrage feuilleté, autrement dit une quasi disparition des images fantômes (ghost images) ou doubles images.  In an advantageous embodiment, the second glass sheet has a thickness at most equal to 1.1 mm. This arrangement reduces the weight of the final laminated glazing. In addition, in the display devices on the inner face of the laminated glazing, such as head-up displays (HUD -) on the windshields, the fineness of the inner glass sheet induced an almost superposition of the images reflected on the faces 4 and 2 of the laminated glazing, in other words a virtual disappearance of ghost images (ghost images) or double images.
Lorsque la seconde feuille de verre est un verre mince d'épaisseur au plus égale à 1 ,1 mm, déposer la couche fonctionnelle sur le premier verre (c'est-à-dire sur le verre extérieur) est particulièrement avantageux. En effet, les lignes industrielles classiques de dépôt d'empilement de couches minces (tel que le produit ClimaCoat ®) par pulvérisation cathodique assistée par magnétron étant adaptées pour produire des verres de dimensions PLF (Pleine Largeur Float) d'épaisseur supérieure ou égale à 1 ,4 mm, déposer sur des verres d'épaisseur inférieure ou égale à 1 , 1 mm nécessiterait des modifications conséquentes desdites lignes, notamment pour toutes les étapes de manipulation des verres (dépilement / empilement, convoyage, découpe). Dans le cas contraire, les rendements de production s'en trouveraient fortement dégradés (casses de verres, rendement de dépôt inférieur aux rendements habituels), ce qui ne serait pas économiquement rentable.  When the second glass sheet is a thin glass of thickness at most equal to 1.1 mm, depositing the functional layer on the first glass (that is to say on the outer glass) is particularly advantageous. Indeed, the conventional industrial thin-layer stacking deposition lines (such as the ClimaCoat® product) by magnetron-assisted sputtering being adapted to produce glasses of PLF (Full Width Float) thickness greater than or equal to 1, 4 mm, deposit on glasses of thickness less than or equal to 1, 1 mm would require substantial modifications of said lines, especially for all glass handling steps (stripping / stacking, conveying, cutting). Otherwise, the production yields would be greatly degraded (glass breaks, deposition efficiency lower than the usual yields), which would not be economically profitable.
Une feuille de verre fine, dans une application du type de celles de l'invention, est de préférence renforcée mécaniquement, tout particulièrement trempée chimique. Or, déposer une couche sur un verre trempé chimique ne peut se faire qu'après la trempe chimique. En effet, on ne peut pas déposer la couche ou l'empilement avant d'effectuer la trempe chimique, car celle-ci détruirait de nombreux couches/empilements fonctionnels tels que ceux cités ci- dessus de façon inhomogène. La trempe serait alors asymétrique à cause de la présence d'une couche barrière aux alcalins dans l'empilement fonctionnel ; et l'échange d'ions asymétrique entre les deux faces du verre entraînerait des contraintes mécaniques asymétriques, et finalement, un gondolement, une formation d'ondulations sur le verre. Il est donc impératif de former la couche fonctionnelle sur le substrat déjà trempé chimiquement. Comme d'autre part le bombage d'une feuille de verre trempée chimiquement entraînerait une perte de la trempe chimique (réhomogénéisation des ions par diffusion thermique), et en conséquence réduirait la résistance mécanique du verre mince, la trempe chimique est effectuée nécessairement après le bombage du substrat. Le dépôt d'une couche fonctionnelle sur une feuille de verre fine trempée chimiquement serait donc effectué sur le substrat bombé, ce qui est extrêmement défavorable comme expliqué précédemment. L'utilisation d'une feuille de verre fine dans un vitrage feuilleté incite par conséquent à déposer la couche fonctionnelle sur une autre feuille de verre du vitrage feuilleté, relativement épaisse, plane, avant son bombage. A thin glass sheet, in an application of the type of those of the invention, is preferably mechanically reinforced, especially hardened chemical. However, depositing a layer on a chemical toughened glass can only be done after chemical quenching. Indeed, it is impossible to deposit the layer or the stack before performing the chemical quenching, because it would destroy many layers / functional stacks such as those mentioned above. above inhomogeneously. The quenching would then be asymmetrical because of the presence of an alkali barrier layer in the functional stack; and asymmetric ion exchange between the two faces of the glass would result in asymmetric mechanical stresses, and finally, curl, rippling on the glass. It is therefore imperative to form the functional layer on the substrate already chemically quenched. As, on the other hand, the bending of a chemically toughened glass sheet would lead to a loss of the chemical quenching (rehomogenization of the ions by thermal diffusion), and consequently reduce the mechanical strength of the thin glass, the chemical quenching is necessarily carried out after the bending the substrate. Deposition of a functional layer on a thin sheet of chemically hardened thin glass would therefore be performed on the curved substrate, which is extremely unfavorable as explained above. The use of a thin glass sheet in a laminated glazing therefore encourages the functional layer to be deposited on another sheet of glass of the relatively thick, flat laminated glazing before it is bent.
L'invention a d'autre part pour objet un procédé de fabrication d'un vitrage feuilleté tel que décrit ci-dessus.  The invention further relates to a method of manufacturing a laminated glazing as described above.
Un premier procédé comprend les opérations consistant à :  A first method comprises the operations of:
- déposer sur une première feuille de verre de dimension au moins égale à celle d'un primitif et au plus celle d'un PLF (6 m x 3,21 m) une ou plusieurs bandes d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du ou des vitrages feuilletés, par sérigraphie ou équivalent ;  depositing on a first glass sheet of dimension at least equal to that of a primitive and at most that of a PLF (6 mx 3.21 m) one or more bands of opaque enamel according to a geometry delimiting a portion less than the periphery of the laminated glazing or windows, by screen printing or the like;
précuire la première feuille de verre à une température comprise entre 500 et 600 °C pour éliminer totalement les liants organiques et précuire l'émail opaque ;  precooking the first sheet of glass at a temperature between 500 and 600 ° C to completely eliminate the organic binders and precook the opaque enamel;
déposer sur la première feuille de verre une couche fonctionnelle, notamment par pulvérisation cathodique sous pression réduite assistée par champ magnétique ;  depositing on the first sheet of glass a functional layer, in particular by magnetic field assisted sputtering under reduced pressure;
- découper le cas échéant au plus tard à ce moment la première feuille de verre en primitifs ;  - if necessary, at the latest, cut out the first sheet of glass in primitive form;
introduire les primitifs des première et seconde feuilles de verre dans une ligne d'assemblage de vitrages feuilletés ; découper les primitifs des première et seconde feuilles de verre à leur forme finale et les passer dans la machine à laver ; introducing the primitives of the first and second sheets of glass into an assembly line of laminated glazings; cut the primitives of the first and second sheets of glass into their final shape and pass them through the washing machine;
démarger la couche fonctionnelle si nécessaire, c'est-à-dire si un masquage lors du dépôt de la couche n'a pas été effectué aux endroits où l'on souhaite éviter la présence de la couche ;  start the functional layer if necessary, that is to say if a masking during the deposition of the layer has not been carried out where it is desired to avoid the presence of the layer;
former sur cette dernière des bus-bars par sérigraphie ou équivalent puis sécher ;  form on the latter bus-bars by screen printing or equivalent and then dry;
appairer les première et seconde feuilles de verre et les bomber à chaud ;  pair the first and second sheets of glass and bomber them hot;
- assembler le vitrage feuilleté au moyen d'une couche adhésive intercalaire.  - Assemble the laminated glazing by means of an interlayer adhesive layer.
L'émail opaque est en général noir et de compositions connues ; au lieu d'émail opaque, on peut employer une peinture aux silicates, noire par exemple.  The opaque enamel is generally black and of known compositions; instead of opaque enamel, we can use a silicate paint, black for example.
La précuisson à 500 - 600 °C a une durée de 1 à 5 min et peut être remplacée par tout moyen de séchage adapté sans sortir du cadre de l'invention.  Precooking at 500 - 600 ° C has a duration of 1 to 5 min and can be replaced by any suitable drying means without departing from the scope of the invention.
Les premières opérations du procédé, jusqu'au dépôt de la couche fonctionnelle compris, sont effectuées indifféremment sur le primitif de la première feuille de verre ou commodément sur un verre de dimensions supérieures à partir duquel pourront être découpés plusieurs primitifs. De telles dimensions supérieures peuvent être celles du Pleine Largeur Float (PLF).(3,21 m X 6 m) ou des surfaces plus petites dont un côté est de 3,21 m (par exemple 3,21 m X 2 m), dans lequel on pourra découper plusieurs primitifs de 1 ,50 m X 1 m par exemple. La découpe du primitif de la première feuille de verre peut être la première étape, ou bien effectuée à tout moment avant l'introduction dans une ligne d'assemblage de vitrages feuilletés.  The first operations of the process, up to the deposition of the functional layer included, are performed indifferently on the primitive of the first glass sheet or conveniently on a glass of larger dimensions from which several primitives can be cut. Such larger dimensions may be those of the Full Float Width (PLF) (3.21 m X 6 m) or smaller areas of which one side is 3.21 m (for example 3.21 m X 2 m), in which one can cut several primitives of 1, 50 m X 1 m for example. Cutting the primitive of the first glass sheet may be the first step, or performed at any time before the introduction into an assembly line of laminated glass.
Le démargeage de la couche fonctionnelle est effectué à la brosse métallique ou équivalent.  The removal of the functional layer is carried out with a wire brush or equivalent.
Les bus-bars peuvent de manière connue être en argent.  The bus bars can in known manner be made of silver.
Conformément à l'invention, la couche fonctionnelle résiste parfaitement au bombage à chaud. La bande d'émail opaque cache d'une vue de l'extérieur la limite périphérique de la couche fonctionnelle démargée ainsi que les bus- bars. Un second procédé comprend les opérations consistant à : According to the invention, the functional layer is highly resistant to hot bending. The opaque enamel tape hides from an outside view the peripheral boundary of the ungapped functional layer as well as bus-bars. A second method comprises the operations of:
- déposer sur une première feuille de verre de dimension au moins égale à celle d'un primitif et au plus celle d'un PLF (6 m X 3,21 m) une ou plusieurs bandes d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du ou des vitrages feuilletés, par sérigraphie ou équivalent ; puis sécher ;  depositing on a first glass sheet of dimension at least equal to that of a primitive and at most that of a PLF (6 m X 3.21 m) one or more bands of enamel opaque according to a geometry delimiting a part at least from the periphery of the laminated glazing (s), by screen printing or the like; then dry;
- former sur la première feuille de verre des bus-bars par sérigraphie ou équivalent puis sécher ;  forming on the first sheet of glass bus-bars by screen printing or equivalent and then drying;
- précuire la première feuille de verre à une température comprise entre 500 et 600 °C pour éliminer totalement les liants organiques et précuire l'émail opaque et les bus-bars ;  precooking the first sheet of glass at a temperature of between 500 and 600 ° C. in order to completely eliminate the organic binders and to precook the opaque enamel and bus-bars;
- découper le cas échéant au plus tard à ce moment la première feuille de verre en primitifs ;  - if necessary, at the latest, cut out the first sheet of glass in primitive form;
- introduire les primitifs des première et seconde feuilles de verre dans une ligne d'assemblage de vitrages feuilletés ;  introducing the primitives of the first and second sheets of glass into an assembly line of laminated glazings;
- découper les primitifs des première et seconde feuilles de verre à leur forme finale et les passer dans la machine à laver ;  - cut the primitives of the first and second sheets of glass to their final shape and pass them in the washing machine;
- déposer sur la première feuille de verre au-dessus des bus-bars une couche fonctionnelle, notamment par pulvérisation cathodique sous pression réduite assistée par champ magnétique ;  depositing on the first sheet of glass above the bus bars a functional layer, in particular by magnetic field assisted sputtering under reduced pressure;
- démarger la couche fonctionnelle si nécessaire, c'est-à-dire si un masquage lors du dépôt de la couche n'a pas été effectué aux endroits où l'on souhaite éviter la présence de la couche ;  - Start the functional layer if necessary, that is to say if a masking during the deposition of the layer has not been performed in places where it is desired to avoid the presence of the layer;
- appairer les première et seconde feuilles de verre et les bomber à chaud ;  - pair the first and second sheets of glass and bomber hot;
- assembler le vitrage feuilleté au moyen d'une couche adhésive intercalaire.  - Assemble the laminated glazing by means of an interlayer adhesive layer.
Selon deux modes de réalisation particuliers du procédé de l'invention : According to two particular embodiments of the method of the invention:
- entre le bombage à chaud des deux feuilles de verre et leur assemblage en vitrage feuilleté, la seconde feuille de verre est soumise à une trempe chimique ; between the hot bending of the two sheets of glass and their assembly in laminated glazing, the second sheet of glass is subjected to chemical quenching;
- juste avant l'appairage des première et seconde feuilles de verre et leur bombage à chaud, on dépose sur les bus-bars ou la couche fonctionnelle une seconde bande d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du vitrage feuilleté, on la sèche et la précuit à une température comprise entre 500 et 600 °C ; cette seconde bande d'émail opaque a pour fonction de cacher les bus-bars et la limite périphérique de la couche fonctionnelle démargée d'une vue de l'habitacle du véhicule, de l'intérieur du bâtiment..., ce qui n'est pas toujours nécessaire selon la configuration de la baie de carrosserie ou du cadre du vitrage feuilleté. just before pairing of the first and second glass sheets and their hot bending, a second opaque enamel band is deposited on the bus bars or the functional layer in a geometry delimiting a part at less than the periphery of the laminated glazing, it is dried and precured at a temperature between 500 and 600 ° C; this second opaque enamel band has the function of hiding the bus bars and the peripheral boundary of the functional layer unmasked from a view of the passenger compartment of the vehicle, the interior of the building ..., which does not This is not always necessary depending on the configuration of the body bay or the frame of the laminated glazing.
D'autres objets de l'invention consistent en l'application d'un vitrage feuilleté décrit précédemment pour un véhicule de transport terrestre, aérien ou aquatique, le bâtiment, l'aménagement intérieur ou le mobilier urbain, en particulier comme pare-brise de véhicule automobile.  Other objects of the invention consist in the application of a laminated glazing previously described for a land, air or aquatic transport vehicle, the building, the interior design or the street furniture, in particular as a windshield for motor vehicle.
Un pare-brise feuilleté de véhicule automobile est fabriqué conformément à l'enseignement qui précède.  A laminated windshield of a motor vehicle is manufactured in accordance with the foregoing teaching.
Il est composé d'une feuille de verre flotté silicosodocalcique de 2,1 mm d'épaisseur non trempée et d'une feuille de verre flotté silicosodocalcique trempée chimiquement, de 1 mm d'épaisseur, collées l'une à l'autre par une feuille de polyvinylbutyral (PVB) de 0,76 mm d'épaisseur.  It consists of a 2.1 mm thick non-quenched silica-gel float glass sheet and a 1 mm thick chemically toughened silica-sand float glass sheet glued to each other by a polyvinylbutyral (PVB) sheet 0.76 mm thick.
La feuille de verre de 2,1 mm d'épaisseur est destinée à être en contact avec l'atmosphère extérieure, celle de 1 mm d'épaisseur avec l'habitacle du véhicule.  The 2.1 mm thick glass sheet is intended to be in contact with the outside atmosphere, that of 1 mm thick with the passenger compartment of the vehicle.
Sur une feuille de verre de 2,1 mm d'épaisseur en Pleine Largeur Float : On a 2.1 mm thick glass sheet in Full Float Width:
- on dépose une bande d'émail noir périphérique, par sérigraphie ; - A strip of black peripheral enamel is deposited by screen printing;
- on précuit la feuille de verre à une température approximative de 550 °C pendant 1 à 5 min pour éliminer totalement les liants organiques et précuire l'émail noir ;  the glass sheet is precooked at a temperature of approximately 550 ° C. for 1 to 5 min in order to completely eliminate the organic binders and to precook the black enamel;
- on dépose sur la feuille de verre un empilement ClimaCoat® commercialisé par la Société Saint-Gobain Sekurit, qui est chauffable, antigivre/antibuée et antisolaire, par pulvérisation cathodique sous pression réduite assistée par champ magnétique ; il s'agit d'un empilement à trois couches d'argent, tel que décrit dans la demande WO 2010/037968.  a ClimaCoat® stack sold by the Saint-Gobain Sekurit Company, which is heatable, anti-fog / anti-fog and antisolar, is deposited on the glass sheet by magnetic field-assisted sputtering under reduced pressure; it is a stack of three layers of silver, as described in the application WO 2010/037968.
On découpe ensuite la feuille de verre en Pleine Largeur Float (PLF) en un primitif à partir du verre.  The Full Float Width (PLF) glass sheet is then cut into a primer from the glass.
On introduit ce primitif et celui de la seconde feuille de verre de 1 mm d'épaisseur dans une ligne d'assemblage de vitrages feuilletés. On découpe les primitifs des première et seconde feuilles de verre à leur forme finale et les passe dans la machine à laver. This primitive and that of the second 1 mm thick glass sheet are introduced into an assembly line of laminated glazings. The primitives of the first and second glass sheets are cut to their final shape and passed through the washing machine.
On démarge l'empilement ClimaCoat®, c'est-à-dire qu'on en élimine une fine bande périphérique par abrasion, avec une brosse métallique, de sorte que la délimitation de l'empilement soit intégralement à l'intérieur de la surface de la bande d'émail noir périphérique.  We start the ClimaCoat® stack, that is to say that we remove a thin peripheral band by abrasion, with a wire brush, so that the delimitation of the stack is entirely inside the surface black peripheral enamel tape.
On forme sur l'empilement ClimaCoat®, en contact avec deux parties périphériques opposées de sa surface, situées aussi intégralement en vis-à-vis de la surface de la bande d'émail noir périphérique, des bus-bars en argent par sérigraphie puis on sèche.  On the ClimaCoat® stack, in contact with two opposite peripheral parts of its surface, located as completely opposite the surface of the peripheral black enamel strip, are formed by silver bars by serigraphy and then we dry.
On-appaire les deux feuilles de verre et les bombe à chaud.  We pair the two glass sheets and hot bombs.
On trempe chimiquement la seconde feuille de verre de 1 mm d'épaisseur.  The second glass sheet 1 mm thick is chemically quenched.
On assemble le vitrage feuilleté au moyen d'une couche de polyvinylbutyral (PVB) de 0,76mm d'épaisseur, par la mise en œuvre de différentes combinaisons possibles et connues de moyens de cycles thermiques - profils de températures, moyens de pression augmentée et/ou réduite. Le vitrage feuilleté procure d'excellentes fonctionnalités antigivre, antisolaire recherchées ; son aspect esthétique satisfait aux exigences en cours.  The laminated glazing unit is assembled by means of a 0.76 mm thick layer of polyvinyl butyral (PVB), by the implementation of various possible and known combinations of thermal cycling means - temperature profiles, increased pressure means and / or reduced. The laminated glazing provides excellent anti-sun and sunscreen functions sought; its aesthetic appearance meets current requirements.

Claims

REVENDICATIONS
1. Vitrage feuilleté comprenant une première et une seconde feuilles de verre collées l'une à l'autre par une couche adhésive intercalaire, caractérisé en ce que la face de la première feuille de verre orientée vers la seconde comprend une bande périphérique d'émail opaque et une couche fonctionnelle démargée dont le bord recouvre la bande périphérique d'émail en étant entièrement situé à l'intérieur de la surface de celle-ci, et en ce que la seconde feuille de verre a une épaisseur strictement inférieure à 1 ,4 mm. 1. Laminated glazing comprising a first and a second sheets of glass bonded to each other by an adhesive interlayer, characterized in that the face of the first sheet of glass oriented towards the second comprises a peripheral strip of enamel opaque and a demarcated functional layer whose edge covers the peripheral strip of enamel while being entirely located inside the surface thereof, and in that the second sheet of glass has a thickness strictly less than 1.4 mm.
2. Vitrage feuilleté selon la revendication 1 , caractérisé en ce que la première feuille de verre a une épaisseur au moins égale à 1 ,4 mm et n'est pas trempée. 2. Laminated glazing according to claim 1, characterized in that the first sheet of glass has a thickness at least equal to 1.4 mm and is not tempered.
3. Vitrage feuilleté selon l'une des revendications 1 ou 2, caractérisé en ce que la seconde feuille de verre a une épaisseur au plus égale à 1 ,1 mm. 3. Laminated glazing according to one of claims 1 or 2, characterized in that the second sheet of glass has a thickness at most equal to 1.1 mm.
4. Vitrage feuilleté selon la revendication 3, caractérisé en ce que la seconde feuille de verre est trempée chimique. 4. Laminated glazing according to claim 3, characterized in that the second sheet of glass is chemically tempered.
5. Procédé de fabrication d'un vitrage feuilleté selon l'une des revendications précédentes, caractérisé en ce qu'il comprend les opérations consistant à : 5. Process for manufacturing laminated glazing according to one of the preceding claims, characterized in that it comprises the operations consisting of:
- déposer sur une première feuille de verre de dimension au moins égale à celle d'un primitif et au plus celle d'un PLF (6 m X 3,21 m) une ou plusieurs bandes d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du ou des vitrages feuilletés, par sérigraphie ou équivalent ; - deposit on a first sheet of glass of dimension at least equal to that of a primitive and at most that of a PLF (6 m at least from the periphery of the laminated glazing(s), by screen printing or equivalent;
- précuire la première feuille de verre à une température comprise entre 500 et 600 °C pour éliminer totalement les liants organiques et précuire l'émail opaque ; - precook the first sheet of glass at a temperature between 500 and 600°C to completely eliminate the organic binders and precook the opaque enamel;
- déposer sur la première feuille de verre une couche fonctionnelle, notamment par pulvérisation cathodique sous pression réduite assistée par champ magnétique ; - deposit a functional layer on the first sheet of glass, in particular by cathode sputtering under reduced pressure assisted by a magnetic field;
- découper le cas échéant au plus tard à ce moment la première feuille de verre en primitifs ; - if necessary, cut the first sheet of glass into blanks at the latest at this time;
- introduire les primitifs des première et seconde feuilles de verre dans une ligne d'assemblage de vitrages feuilletés ; - découper les primitifs des première et seconde feuilles de verre à leur forme finale et les passer dans la machine à laver ; - introduce the blanks of the first and second sheets of glass into a laminated glazing assembly line; - cut the blanks of the first and second sheets of glass to their final shape and put them in the washing machine;
- démarger la couche fonctionnelle si nécessaire, c'est-à-dire si un masquage lors du dépôt de la couche n'a pas été effectué aux endroits où l'on souhaite éviter la présence de la couche ; - remove the functional layer if necessary, that is to say if masking during deposition of the layer has not been carried out in the places where it is desired to avoid the presence of the layer;
- former sur cette dernière des bus-bars par sérigraphie ou équivalent puis sécher ; - form bus bars on the latter by screen printing or equivalent then dry;
- appairer les première et seconde feuilles de verre et les bomber à chaud ; - pair the first and second sheets of glass and hot bend them;
- assembler le vitrage feuilleté au moyen d'une couche adhésive intercalaire. - assemble the laminated glazing using an adhesive interlayer.
6. Procédé de fabrication d'un vitrage feuilleté selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend les opérations consistant à : 6. Process for manufacturing laminated glazing according to one of claims 1 to 4, characterized in that it comprises the operations consisting of:
- déposer sur une première feuille de verre de dimension au moins égale à celle d'un primitif et au plus celle d'un PLF (6 m X 3,21 m) une ou plusieurs bandes d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du ou des vitrages feuilletés, par sérigraphie ou équivalent ; puis sécher ; - deposit on a first sheet of glass of dimension at least equal to that of a primitive and at most that of a PLF (6 m at least from the periphery of the laminated glazing(s), by screen printing or equivalent; then dry;
- former sur la première feuille de verre des bus-bars par sérigraphie ou équivalent puis sécher ; - form bus bars on the first sheet of glass by screen printing or equivalent then dry;
- précuire la première feuille de verre à une température comprise entre 500 et 600 °C pour éliminer totalement les liants organiques et précuire l'émail opaque et les bus-bars ; - pre-cook the first sheet of glass at a temperature between 500 and 600 °C to completely eliminate the organic binders and pre-cook the opaque enamel and the bus-bars;
- découper le cas échéant au plus tard à ce moment la première feuille de verre en primitifs ; - if necessary, cut the first sheet of glass into blanks at the latest at this time;
- introduire les primitifs des première et seconde feuilles de verre dans une ligne d'assemblage de vitrages feuilletés ; - introduce the blanks of the first and second sheets of glass into a laminated glazing assembly line;
- découper les primitifs des première et seconde feuilles de verre à leur forme finale et les passer dans la machine à laver ; - cut the blanks of the first and second sheets of glass to their final shape and put them in the washing machine;
- déposer sur la première feuille de verre au-dessus des bus-bars une couche fonctionnelle, notamment par pulvérisation cathodique sous pression réduite assistée par champ magnétique ; - démarger la couche fonctionnelle si nécessaire, c'est-à-dire si un masquage lors du dépôt de la couche n'a pas été effectué aux endroits où l'on souhaite éviter la présence de la couche ; - deposit a functional layer on the first sheet of glass above the bus bars, in particular by cathode sputtering under reduced pressure assisted by a magnetic field; - remove the functional layer if necessary, that is to say if masking during deposition of the layer has not been carried out in the places where it is desired to avoid the presence of the layer;
- appairer les première et seconde feuilles de verre et les bomber à chaud ; - pair the first and second sheets of glass and hot bend them;
- assembler le vitrage feuilleté au moyen d'une couche adhésive intercalaire. - assemble the laminated glazing using an adhesive interlayer.
7. Procédé selon l'une des revendications 5 ou 6, caractérisé en ce qu'entre le bombage à chaud des deux feuilles de verre et leur assemblage en vitrage feuilleté, la seconde feuille de verre est soumise à une trempe chimique. 7. Method according to one of claims 5 or 6, characterized in that between the hot bending of the two sheets of glass and their assembly into laminated glazing, the second sheet of glass is subjected to chemical tempering.
8. Procédé selon l'une des revendications 5 à 7, caractérisé en ce que juste avant l'appairage des première et seconde feuilles de verre et leur bombage à chaud, on dépose sur les bus-bars ou la couche fonctionnelle une seconde bande d'émail opaque selon une géométrie délimitant une partie au moins de la périphérie du vitrage feuilleté, on la sèche et la précuit à une température comprise entre 500 et 600 °C. 8. Method according to one of claims 5 to 7, characterized in that just before the pairing of the first and second sheets of glass and their hot bending, a second strip of Opaque enamel according to a geometry delimiting at least part of the periphery of the laminated glazing, it is dried and pre-cooked at a temperature between 500 and 600 ° C.
9. Application d'un vitrage feuilleté selon l'une des revendications 1 à 4 pour un véhicule de transport terrestre, aérien ou aquatique, le bâtiment, l'aménagement intérieur ou le mobilier urbain. 9. Application of laminated glazing according to one of claims 1 to 4 for a land, air or water transport vehicle, the building, interior design or urban furniture.
10. Application selon la revendication 8 comme pare-brise de véhicule automobile. 10. Application according to claim 8 as a motor vehicle windshield.
PCT/FR2017/051344 2016-05-31 2017-05-30 Laminated glazing with a borderless functional layer WO2017207914A1 (en)

Priority Applications (5)

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CN201780033702.1A CN109153233B (en) 2016-05-31 2017-05-30 Laminated glazing with a functional layer having a removed edge portion
MX2018014701A MX2018014701A (en) 2016-05-31 2017-05-30 Laminated glazing with a borderless functional layer.
EP17732515.6A EP3463870A1 (en) 2016-05-31 2017-05-30 Laminated glazing with a borderless functional layer
KR1020227003950A KR102433607B1 (en) 2016-05-31 2017-05-30 Laminated glazing with a borderless functional layer
KR1020187034331A KR20190012170A (en) 2016-05-31 2017-05-30 Laminate-type glazing with borderless functional layer

Applications Claiming Priority (2)

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FR1654900A FR3051716B1 (en) 2016-05-31 2016-05-31 LAMINATED GLAZING WITH A FUNCTIONAL LAYER DEMARGED
FR1654900 2016-05-31

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KR (2) KR102433607B1 (en)
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CN110382227A (en) * 2018-02-14 2019-10-25 法国圣戈班玻璃厂 The area of visual field of camera has the motor vehicle windshield of reduced optical distortion
CN111470781A (en) * 2020-03-06 2020-07-31 信义节能玻璃（四川）有限公司 Glass processing method and glass processing equipment
WO2021254766A1 (en) 2020-06-18 2021-12-23 Saint-Gobain Glass France Method for producing a curved, coated vehicle pane having an opaque top coating and a transparent coating
WO2022058691A1 (en) * 2020-09-21 2022-03-24 Saint-Gobain Glass France Method for obtaining curved laminated glazing
CN114765970A (en) * 2020-11-12 2022-07-19 法国圣戈班玻璃厂 Laminated glazing for a vehicle, in particular a motor vehicle

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FR3093105B1 (en) * 2019-02-22 2021-02-26 Saint Gobain Glass sheet coated with a layer of mineral paint and a stack of thin layers
FR3100244B1 (en) * 2019-09-04 2023-10-27 Saint Gobain Glass sheet comprising an enameled area and an undercoat
WO2021105241A1 (en) * 2019-11-29 2021-06-03 Agc Glass Europe Laminated glazing for projecting an image from a head-up display (hud)

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CN110382227A (en) * 2018-02-14 2019-10-25 法国圣戈班玻璃厂 The area of visual field of camera has the motor vehicle windshield of reduced optical distortion
CN111470781A (en) * 2020-03-06 2020-07-31 信义节能玻璃（四川）有限公司 Glass processing method and glass processing equipment
CN111470781B (en) * 2020-03-06 2023-01-13 信义节能玻璃（四川）有限公司 Glass processing method and glass processing equipment
WO2021254766A1 (en) 2020-06-18 2021-12-23 Saint-Gobain Glass France Method for producing a curved, coated vehicle pane having an opaque top coating and a transparent coating
WO2022058691A1 (en) * 2020-09-21 2022-03-24 Saint-Gobain Glass France Method for obtaining curved laminated glazing
FR3114265A1 (en) * 2020-09-21 2022-03-25 Saint-Gobain Glass France Process for obtaining laminated curved glazing
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CN114765970B (en) * 2020-11-12 2024-04-19 法国圣戈班玻璃厂 Laminated glazing for a vehicle, in particular a motor vehicle

Also Published As

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EP3463870A1 (en) 2019-04-10
CN109153233A (en) 2019-01-04
FR3051716A1 (en) 2017-12-01
FR3051716B1 (en) 2020-09-25
KR20220025117A (en) 2022-03-03
CN109153233B (en) 2021-11-09
MX2018014701A (en) 2019-03-11
KR102433607B1 (en) 2022-08-18
KR20190012170A (en) 2019-02-08

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