WO2023186647A1 - Kit comprenant au moins deux vitrages feuilletés - Google Patents
Kit comprenant au moins deux vitrages feuilletés Download PDFInfo
- Publication number
- WO2023186647A1 WO2023186647A1 PCT/EP2023/057291 EP2023057291W WO2023186647A1 WO 2023186647 A1 WO2023186647 A1 WO 2023186647A1 EP 2023057291 W EP2023057291 W EP 2023057291W WO 2023186647 A1 WO2023186647 A1 WO 2023186647A1
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- WIPO (PCT)
- Prior art keywords
- laminated glazing
- state
- kit according
- glazing
- equal
- 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.)
- Ceased
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Classifications
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- 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
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- 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
- B32B17/10082—Properties of the bulk of a glass sheet
- B32B17/1011—Properties of the bulk of a glass sheet having predetermined tint or excitation purity
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- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
-
- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
- B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
- B32B17/10504—Liquid crystal layer
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- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
- B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
- B32B17/10513—Electrochromic layer
-
- 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
- B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
- B32B17/10467—Variable transmission
- B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
- B32B17/10532—Suspended particle layer
-
- 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
- B32B17/10651—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 comprising colorants, e.g. dyes or pigments
Definitions
- the invention relates to the field of motor vehicle glazing.
- Glazing for motor vehicles must meet an increasing number of requirements, in terms of safety (visibility, impact resistance, resistance to burglary), comfort (visual, thermal, acoustic) or even aesthetics (curvature, appearance in reflection and transmission, from inside or outside).
- Various functionalities are also integrated into the glazing, for example for display, heating, etc.
- laminated glazing in which two sheets of glass are adhesively bonded using a laminated interlayer, improves burglary resistance and acoustic comfort, ensures good visibility even in the event of breakage, and makes it easier to integrate different functionalities.
- the different glazing used must meet requirements which are different depending on the type of glazing.
- an automobile roof is generally very tinted in order to ensure good thermal comfort
- a windshield must allow good vision at least in its central area, and may require defrosting or demisting functions requiring the adding thin layers to the glass.
- the glass sheets used for these glazings will therefore generally be different.
- tint the colored appearance in transmission, characterized in particular by the colorimetric coordinates L*a*b*, calculated from the transmission spectrum between 380 and 780 nm taking into consideration the illuminant D65 as well as the CIE 1964 observer (10°).
- dark state we mean a state in which the light transmission of the glazing in the corresponding zone is lower than in the “bright” state.
- a dark state can correspond to a light transmission less than or equal to 8%, in particular less than or equal to 5%, even less than or equal to 3%, and even less than or equal to 1%.
- a clear state can correspond to a light transmission greater than or equal to 10%, in particular greater than or equal to 15%.
- the light transmission is calculated from the transmission spectrum between 380 and 780 nm taking into account the illuminant A and the CIE 1964 reference observer (10°). This functionality makes it possible to improve the thermal and light comfort of the occupants of the passenger compartment by modulating the entry of light as desired.
- the inventors were able to demonstrate that despite the use of different sheets of glass, it was nevertheless possible to ensure that the appearance of the different zones with variable tint was substantially identical, both in the clear state and in the the dark state, in particular to improve the visual comfort of the occupants of the passenger compartment and the general appearance of the vehicle.
- the subject of the invention is a kit comprising a first laminated glazing and a second laminated glazing, said first and second laminated glazing being different from each other and being intended to equip the same motor vehicle, in which: - the first laminated glazing comprises at least one electro-controllable zone with variable tint so as to go from a light state to a dark state and vice versa, and comprises two sheets of glass and at least one lamination spacer, - the second laminated glazing comprises at least one electrically controllable zone with variable tint so as to go from a light state to a dark state and vice versa, and comprises two sheets of glass and at least one lamination spacer, at least one of glass sheets of the second laminated glazing having a different shade from that of each of the glass sheets of the first laminated glazing, - the difference ⁇ TLA between the light transmission of the first laminated glazing in the electrocontrollable zones in the light state, respectively in the dark state, and the light transmission of the second laminated glazing in the electrocontrollable zones in the light state, respectively in the dark state dark
- the difference ⁇ TLA and the color difference in transmission ⁇ E are therefore small, both in the light state and in the dark state.
- the light transmission of the laminated glazing in the electrocontrollable zones is preferably less than or equal to 8%, in particular less than or equal to 5%, or even less than or equal to 3% and even less than or equal to 1%.
- the dark state can therefore be opaque or almost opaque.
- the light transmission of the glazing in the electrocontrollable zones is preferably greater than or equal to 8%, in particular greater than or equal to 10%, for example between 10 and 30%.
- the difference ⁇ TLA is preferably less than or equal to 1, in particular less than or equal to 0.5, in absolute value, in the light state and/or in the dark state.
- the difference ⁇ TLA is determined according to the following formula:
- TLA 1 and TLA 2 corresponding respectively to the light transmission of the first laminated glazing and the second laminated glazing (in the areas with variable tint).
- the light transmission is calculated from the transmission spectrum between 380 and 780 nm taking into account the illuminant A and the CIE 1964 reference observer (10°) and expressed in percent. Thus, if TLA 1 is worth 20% and TLA 2 is worth 18%, the difference ⁇ TLA is worth 2.
- the colorimetric coordinates L*a*b* of the first and second glass sheets are calculated from the transmission spectrum between 380 and 780 nm taking into consideration the illuminant D65 as well as the CIE 1964 observer (10°).
- the kit or vehicle may include other laminated glazing, in particular a third laminated glazing, a fourth laminated glazing, etc.
- the conditions relating to the difference in transmission and the color difference may also apply to these additional laminated glazing, either in its entirety, or in possible electro-controllable areas with variable tint, and in the latter case, both in the light state and in the dark state.
- the vehicle or kit may also include monolithic glazing, generally mechanically reinforced (tempered or hardened).
- monolithic glazing generally mechanically reinforced (tempered or hardened).
- the glass of these glazings can be chosen so that the aforementioned conditions relating to the difference in transmission and the color difference apply to these additional monolithic glazings, in the light state or in the dark state. .
- Laminated glazing is generally curved, particularly in one or two directions, in order to integrate perfectly with the vehicle body.
- the interior face of the glazing intended to be located on the interior side of the vehicle, which is the concave face
- the exterior face of the glazing intended to be located on the exterior side of the vehicle, which is the convex face. Bending can in particular be carried out by gravity (the glass deforming under its own weight) or by pressing, at temperatures typically ranging from 550 to 650°C.
- the two sheets of glass of the laminated glazing are curved separately.
- the glass sheets are curved together.
- laminated glazing comprises only two sheets of glass.
- the first and second laminated glazing are preferably chosen from the windshield, the roof, the side windows (front or rear), the quarter panels and the rear window.
- the side windows can for example include an electrically controllable zone occupying the entire surface of the window (particularly in the case of rear side windows), or only a part, for example in the form of a horizontal strip located in the upper part of the glazing ( particularly in the case of front side windows).
- the first and/or second laminated glazing may comprise one or more electro-controllable zones. This or these zones can occupy all or part of the surface of the glazing. Depending on the case, the total surface occupied by the electrocontrollable zone(s) represents at least 60%, in particular at least 70%, or even at least 80% or at least 90% of the surface of the laminated glazing, or on the contrary occupies for example between 5 and 80%, in particular between 10 and 50% of the surface of the laminated glazing.
- the first and second laminated glazing preferably comprise sheets of clear glass, tinted glass and/or over-tinted glass, in any possible combination.
- the light transmission and tint of each sheet of glass are adjusted using the chemical composition of the glass and the thickness of the glass sheet.
- the thickness of the glass sheets is preferably between 0.7 and 4.0 mm, in particular between 1.4 and 3.0 mm.
- the chemical composition of the glass includes a colorless base, preferably silico-soda-lime (but other glasses can be used, in particular borosilicate or aluminosilicate glasses), as well as a coloring part.
- the coloring part comprises in particular one or more dyes chosen from transition metal oxides – in particular iron oxides (ferrous and ferric), cobalt oxide, chromium oxide, nickel oxide, oxides of rare earths, notably erbium oxide, and selenium.
- a sheet of clear glass is a sheet having, for example, a light transmission of at least 85%, or even at least 90%. It generally does not include any coloring part with the exception of inevitable impurities, in particular iron oxides, in a total content of between 0.005 and 0.200% by weight, in particular between 0.010 and 0.150% by weight, or even between 0.030 and 0.200% by weight. 0.120% by weight.
- a sheet of tinted glass is a sheet of glass having, for example, a light transmission between 50 and 80%, in particular between 60 and 75%. It comprises a coloring part, for example consisting of iron oxides, in a total content of between 0.4 and 1.2% by weight, in particular between 0.6 and 1.1% by weight.
- the glasses obtained are then green, possibly yellowish or green-blue depending on the proportion of ferrous iron.
- cobalt oxide, selenium and/or erbium oxide are added in order to impart a tint, for example blue or gray.
- a sheet of overtinted glass is a sheet of glass having, for example, a light transmission between 5 and 50%, in particular between 8 and 40%. It comprises a coloring part for example consisting of iron oxides, in a total content of between 1.0 and 2.3 by weight, in particular between 1.1 and 2.0% by weight, as well as cobalt oxides and chromium and/or selenium.
- the coloring part comprises for example the following dyes, in the weight contents defined below: Fe 2 O 3 (total iron) from 1.2 to 2.3%, in particular from 1.5 to 2.2%, CoO from 50 to 400 ppm, in particular from 200 to 350 ppm, Se from 0 to 35 ppm, in particular from 10 to 30 ppm.
- the redox is preferably between 0.1 and 0.4, in particular between 0.2 and 0.3.
- redox we mean the weight ratio between the ferrous iron content (expressed as FeO) and the total iron content (expressed as Fe 2 O 3 ).
- the glasses obtained are notably green or gray.
- At least one of the glass sheets of the second laminated glazing has a tint, and preferably also a light transmission, different from that of each of the glass sheets of the first laminated glazing.
- the second laminated glazing may comprise a sheet of tinted glass (possibly with a sheet of clear glass or a sheet of tinted glass), while the first laminated glazing comprises two sheets of tinted glass or a sheet of tinted glass and one clear glass sheet.
- the differences in color, or even light transmission can also be characterized by the parameters ⁇ TLA and ⁇ E previously defined, except that the light transmissions and L*a*b* coordinates are those of the glass sheets to be compared, and not of the complete laminated glazing.
- at least one of the glass sheets of the second laminated glazing has a difference ⁇ TLA of at least 10, in particular at least 15, or even at least 20 or at least 30, even at least 30. least 40 or at least 50, with at least one, and even with each of the glass sheets of the first laminated glazing.
- at least one of the glass sheets of the second laminated glazing has a color difference ⁇ E of at least 5, in particular at least 6, or even at least 7, with at least one, or even with each of the glass sheets of the first laminated glazing.
- the first laminated glazing is a windshield and the second laminated glazing is a roof.
- the windshield may in particular be a panoramic windshield, which extends towards the rear of the vehicle above the driver and the front passenger.
- the roof can occupy all or part of the roof of the vehicle. It can be separated from the windshield by a part of the bodywork or, on the contrary, be a direct extension of the windshield.
- the first laminated glazing is advantageously a windshield which comprises at least one electro-controllable zone with variable tint located in the upper part of the windshield in the assembled state, in particular in zone C, for example in the form of a horizontal strip.
- an electrically controllable zone can be located in the lower part of the windshield, for example for the purpose of displaying information.
- one or more electrically controllable zones can be located in the part intended to be located above the driver or front passenger.
- two independently electrically controllable zones can be located one above the driver, the other above the front passenger, which allows each occupant to adapt their thermal and light comfort independently of the others. .
- the light transmission of the windshield in the electrocontrollable zones in the clear state and advantageously in the central part, called zone A, is preferably greater than or equal to 70%.
- the light transmission is as defined previously (TLA). To do this, you can laminate a sheet of clear glass with a sheet of tinted glass.
- the clear glass sheet is preferably located on the exterior side of the vehicle.
- the second laminated glazing when it is a roof, it may in particular comprise a single electro-controllable zone, which can occupy all or part of the surface of the roof, for example between 50 and 100%, in particular between 70 and 95% of the surface of the roof.
- the roof may comprise several independently electrically controllable zones (in particular two, three or four), which may in total occupy all or part of the surface of the roof, for example between 50 and 100%, in particular between 70 and 95% of the surface of the roof. roof.
- the light transmission of the roof (and generally of the first and second laminated glazing) in the electrocontrollable zone(s) in the clear state is preferably between 5 and 50%, in particular between 8 and 30%. , in order to ensure good thermal comfort.
- the light transmission is as defined previously (TLA). To do this, it is possible, for example, to laminate two sheets of tinted glass, or to laminate a sheet of tinted glass with a sheet of clear glass, or to laminate a sheet of tinted glass with a sheet of tinted glass, or even to leaf through two sheets of tinted glass.
- the first or second laminated glazing may also comprise a thin layer or a stack of thin layers deposited on one of the glass sheets. It may in particular be a low-emissivity coating, in particular whose normal emissivity is preferably less than 0.50, in particular 0.30 and even 0.20 or even 0.10. It is preferably a stack of thin layers comprising at least one (in particular two, three or four) layers of silver or a layer of a transparent conductive oxide, in particular chosen from tin and tin oxides. indium, zinc oxides doped with aluminum or gallium or tin oxides doped with fluorine or antimony. These functional layers are generally interposed between dielectric layers based on oxides, nitrides and/or oxide nitrides.
- these layers Due to their low emissivity, these layers improve thermal comfort, by reducing the entry of solar heat in summer and reducing heat loss in winter. When electrical current inputs are provided, these layers, due to their low electrical resistivity, can also dissipate heat by the Joule effect, making it possible, particularly in the case of a windshield, to defrost or demist the glazing.
- these layers or stacks are preferably arranged on face 2 or 3 of the glazing, that is to say facing a lamination interlayer.
- a stack comprising a layer of transparent conductive oxide, on face 4 of the glazing, that is to say the face located in contact with the interior of the vehicle. The thermal comfort of the occupants is further improved by the presence of such a stack.
- the electrocontrollable zones with variable tint of the first and second laminated glazing comprise films interposed between two lamination interlayers and chosen independently from electrochromic films, films for suspended particle devices (technology sometimes called “SPD”) and liquid crystal films.
- SPD suspended particle devices
- active films are generally films comprising several layers, some of which may be liquid.
- the functional layers are generally encapsulated between two polymer sheets, for example polyethylene terephthalate (PET) or polycarbonate (PC).
- PET polyethylene terephthalate
- PC polycarbonate
- Electrochromic films preferably comprise two transparent electrodes separated by an ion storage layer, a polymer electrolyte layer and an electrochromic layer. The reversible chemical reaction between the ions and the electrochromic layer causes a variation in color.
- Films for suspended particle devices comprise particles suspended in a liquid (in particular contained in the pores of a polymer matrix), said particles having the capacity to align themselves under the effect of an electric field, modifying the tint of the film (changing from dark to light).
- Liquid crystal films are for example liquid crystal films dispersed in a polymer (technology called PDLC) or liquid crystal films of the guest/host type (also called “Guest-Host” or GH-LCD). In the latter case, dichroic coloring molecules are dissolved in a liquid crystal, the two components aligning under the effect of an electric field so as to go from the dark state to the light state.
- Guest/host type liquid crystal films are preferred because they feature very fast switching time, high contrast between light and dark states, low blur, and neutral tint.
- the active films of the first and second laminated glazing are of the same nature. It is thus easier to obtain similar shades and light transmissions.
- first laminated glazing comprising an SPD film
- second laminated glazing comprising a PDLC film or a GH-LCD film.
- the lamination step can be carried out by autoclave treatment, for example at temperatures of 110 to 160°C and under a pressure ranging from 10 to 15 bars.
- the air trapped between the glass sheets and the lamination interlayer can be eliminated by calendering or vacuum.
- lamination can alternatively be carried out by calendering or using a vacuum press, followed by autoclave treatment, to eliminate residual air bubbles and optimize adhesion. .
- At least one of the first and second laminated glazings also comprises an additional colored layer.
- additional colored layer means an additional layer in relation to the elements of the glazing which are the glass sheets, the interlayer and the active film.
- the polymer can be dissolved in a solvent to make liquid deposition possible.
- a polymeric layer based on poly(vinyl butyral), polyethylene, copolymer of ethylene and vinyl acetate dissolved in a solvent.
- the colored polymeric layer is a layer obtained from a composition comprising epoxy compounds or (meth)acrylate compounds.
- the polymeric layer is for example obtained from a liquid composition comprising (meth)acrylate compounds chosen from monomers, oligomers, or polymers comprising at least one methacrylate function.
- the polymeric layer comprises a coloring agent, which preferably represents between 0.01 and 10% by mass relative to the total mass of the polymeric compounds.
- the coloring agent is in particular an organic compound, preferably inserted into the polymeric composition in the molecular state, that is to say that it is dissolved in the composition and does not form solid particles.
- derivatives of the anthraquinone family can be cited as dyes (Acid Blue 25, Alizarin, Anthrapurpurin, Carminic acid, 1,4-Diamino-2,3-dihydroanthraquinone, 7,14-Dibenzpyrenequinone, Dibromoanthanthrone, 1,3- Dihydroxyanthraquinone, 1,4-Dihydroxyanthraquinone, Disperse Red 9, Disperse Red 11, Indanthrone blue, Morindone, Oil Blue 35, Oil Blue A, Parietin, Quinizarine Green SS, Remazol Brilliant Blue R, Solvent Violet 13, 1,2,4- Trihydroxyanthraquinone, Vat Orange 1, Vat Yellow 1) or products from the Neozapon®, Irgasperse®, Basantol®, Orasol® ranges, marketed by the company BASF.
- dyes Acid Blue 25, Alizarin, Anthrapurpurin, Carminic acid, 1,4-Diamino-2,
- a sol-gel process typically comprises the formation of a “sol”, that is to say a solution containing at least one precursor of the oxide to be deposited, the application of this solution to the surface to be coated , then the consolidation or densification of the coating by means of heat treatment.
- the precursor includes salts of the element whose oxide is to be deposited.
- organometallic compounds include alkoxides, for example tetraorthosilicate (TEOS) in the case of a layer of silicon oxide.
- the soil may be partially watery. It preferably comprises an organic solvent, for example an alcohol, in particular chosen from ethanol, isopropanol, butanol and glycols or glycol derivatives, and their mixtures.
- the sol may additionally contain viscosity regulating agents, such as cellulose ethers or polyacrylates.
- the sol-gel layers are notably colored by adding inorganic pigments such as metal oxides or metals, generally in the form of nanometric particles.
- FIG. 1 is a partial schematic sectional view of laminated glazing in an electrically controllable zone.
- FIG. 1 is a partial schematic sectional view of laminated glazing in an electrically controllable zone.
- Vehicle 3 shown in comprises a laminated windshield 1 as well as a laminated roof 2 comprising electro-controllable zones with variable tint.
- the vehicle also includes side windows 4 and 5, quarter windows 6 and a rear window (not shown).
- these glazings do not include electrically controllable zones with variable tint.
- these glazings, or some of them, could also include electrically controllable zones with variable tint.
- the interlayer 108 has a different shade from that of the interlayers 206 and 208.
- the interlayer 109 has the same color as that of the interlayers 206 and 208, but the windshield 1 includes an additional colored layer 110.
- the layer 110 is placed on the glass sheet 104, but d Other examples are obviously possible, the layer being able for example to be placed on the glass sheet 102 or between one of the interlayers 106 or 109 and the active film 107.
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Laminated Bodies (AREA)
- Liquid Crystal (AREA)
Abstract
Description
- le premier vitrage feuilleté comprend au moins une zone électrocommandable à teinte variable de manière à passer d’un état clair à un état sombre et inversement, et comprend deux feuilles de verre et au moins un intercalaire de feuilletage,
- le deuxième vitrage feuilleté comprend au moins une zone électrocommandable à teinte variable de manière à passer d’un état clair à un état sombre et inversement, et comprend deux feuilles de verre et au moins un intercalaire de feuilletage, l’une au moins des feuilles de verre du deuxième vitrage feuilleté ayant une teinte différente de celle de chacune des feuilles de verre du premier vitrage feuilleté,
- la différence ΔTLA entre la transmission lumineuse du premier vitrage feuilleté dans les zones électrocommandables à l’état clair, respectivement à l’état sombre, et la transmission lumineuse du deuxième vitrage feuilleté dans les zones électrocommandables à l’état clair, respectivement à l’état sombre, est inférieure ou égale à 2 en valeur absolue, et
- l’écart de couleur en transmission ΔE entre le premier vitrage feuilleté dans les zones électrocommandables à l’état clair, respectivement à l’état sombre, et le deuxième vitrage feuilleté dans les zones électrocommandables à l’état clair, respectivement à l’état sombre, est inférieur ou égal à 5,0.
- le pare-brise 1 comprenait dans les zones électrocommandables, et depuis l’extérieur du véhicule, une feuille de verre clair 102 de 2,1 mm d’épaisseur revêtue en face 2 d’un empilement de couches minces comprenant trois couches d’argent et servant au dégivrage du pare-brise, puis un intercalaire 106 en PVB clair de 0,76 mm d’épaisseur, puis un film actif 107 de type LCD-GH, puis un intercalaire 108 en PVB gris de 0,85 mm d’épaisseur, puis une feuille de verre teinté vert 104 de 1,6 mm d’épaisseur. A l’état clair, le vitrage présentait une TLA de 11,3% et les coordonnées colorimétriques suivantes : L* = 41,0 ; a* = -9,6 ; b* = 6,3. A l’état sombre, le vitrage présentait une TLA de 0,6% et les coordonnées colorimétriques suivantes : L* = 6,0 ; a* = -2,4 ; b* = 0,2.
- le toit 2 comprenait dans les zones électrocommandables, et depuis l’extérieur du véhicule, une feuille de verre clair 202 de 2,1 mm d’épaisseur revêtue en face 2 d’un empilement de couches minces comprenant quatre couches d’argent, puis un intercalaire 206 en PVB clair de 0,76 mm d’épaisseur, puis un film actif 207 de type LCD-GH (identique à celui utilisé pour le pare-brise 1), puis un intercalaire 208 en PVB clair de 0,38 mm d’épaisseur, puis une feuille de verre surteinté gris 204 de 1,6 mm d’épaisseur. A l’état clair, le vitrage présentait une TLA de 12,0% et les coordonnées colorimétriques suivantes : L* = 41,0 ; a* = -6,0 ; b* = 9,3, soit une ΔTLA de 0,7 et un ΔE de 4,7. A l’état sombre, le vitrage présentait une TLA de 0,6% et les coordonnées colorimétriques suivantes : L* = 6,0 ; a* = -1,2 ; b* = 1,0, soit une ΔTLA de 0,7 et un ΔE de 1,4.
- le pare-brise comprenait dans les zones électrocommandables, et depuis l’extérieur du véhicule, une feuille de verre teinté vert de 2,1 mm d’épaisseur, puis un intercalaire en PVB clair anti-UV de 0,76 mm d’épaisseur, puis un intercalaire en PVB gris de 0,38 mm d’épaisseur, puis un film actif de type LCD-GH, puis un intercalaire en PVB clair de 0,38 mm d’épaisseur, puis une feuille de verre clair de 1,6 mm d’épaisseur. A l’état clair, le vitrage présentait une TLA de 10,2% et les coordonnées colorimétriques suivantes : L* = 39,0 ; a* = -9,1 ; b* = 1,0. A l’état sombre, le vitrage présentait une TLA de 0,4% et les coordonnées colorimétriques suivantes : L* = 4,0 ; a* = -0,8 ; b* = -1,0.
- le toit comprenait dans les zones électrocommandables, et depuis l’extérieur du véhicule, une feuille de verre clair de 2,1 mm d’épaisseur, puis un intercalaire en PVB clair anti-UV de 0,76 mm d’épaisseur, puis un intercalaire en PVB bleu de 0,76 mm, puis un film actif de type LCD-GH (identique à celui utilisé pour le pare-brise), puis un intercalaire en PVB clair de 0,38 mm d’épaisseur, puis une feuille de verre surteinté gris de 2,1 mm d’épaisseur. A l’état clair, le vitrage présentait une TLA de 10,0% et les coordonnées colorimétriques suivantes : L* = 39,0 ; a* = -8,2 ; b* = 1,8, soit une ΔTLA de 0,2 et un ΔE de 1,2. A l’état sombre, le vitrage présentait une TLA de 0,4% et les coordonnées colorimétriques suivantes : L* = 4,0 ; a* = -0,5 ; b* = -0,8, soit une ΔTLA de 0 et un ΔE de 0,4.
Claims (15)
- Kit comprenant un premier vitrage feuilleté (1) et un deuxième vitrage feuilleté (2), lesdits premier et deuxième vitrages feuilletés étant différents l’un de l’autre et étant destinés à équiper un même véhicule automobile (3), dans lequel :
- le premier vitrage feuilleté (1) comprend au moins une zone électrocommandable (11, 12) à teinte variable de manière à passer d’un état clair à un état sombre et inversement, et comprend deux feuilles de verre (102, 104) et au moins un intercalaire de feuilletage (106, 108, 109),
- le deuxième vitrage feuilleté (2) comprend au moins une zone électrocommandable (21, 22) à teinte variable de manière à passer d’un état clair à un état sombre et inversement, et comprend deux feuilles de verre (202, 204) et au moins un intercalaire de feuilletage (206, 208), l’une au moins des feuilles de verre du deuxième vitrage feuilleté (202, 204) ayant une teinte différente de celle de chacune des feuilles de verre (102, 104) du premier vitrage feuilleté,
- la différence ΔTLA entre la transmission lumineuse du premier vitrage feuilleté (1) dans les zones électrocommandables (11, 12) à l’état clair, respectivement à l’état sombre, et la transmission lumineuse du deuxième vitrage feuilleté dans les zones électrocommandables (21, 22) à l’état clair, respectivement à l’état sombre, est inférieure ou égale à 2 en valeur absolue, et
- l’écart de couleur en transmission ΔE entre le premier vitrage feuilleté (1) dans les zones électrocommandables (11, 12) à l’état clair, respectivement à l’état sombre, et le deuxième vitrage feuilleté (2) dans les zones électrocommandables (21, 22) à l’état clair, respectivement à l’état sombre, est inférieur ou égal à 5,0. - Kit selon la revendication précédente, dans lequel le premier vitrage feuilleté (1) est un pare-brise et le deuxième vitrage feuilleté (2) est un toit.
- Kit selon la revendication précédente, dans lequel le premier vitrage feuilleté (1) est un pare-brise qui comprend au moins une zone électrocommandable (11, 12) à teinte variable située en partie supérieure du pare-brise à l’état monté, notamment sous forme de bande horizontale.
- Kit selon l’une des revendications 2 et 3, dans lequel la transmission lumineuse du pare-brise (1) dans les zones électrocommandables (11, 12) à l’état clair est supérieure ou égale à 70%.
- Kit selon l’une des revendications 2 à 4, dans lequel la transmission lumineuse du toit (2) dans la ou les zone(s) électrocommandable(s) (21, 22) à l’état clair est comprise entre 5 et 50%, notamment entre 8 et 30%.
- Kit selon l’une des revendications précédentes, dans lequel, dans les zones électrocommandables (11, 12, 21, 22) à l’état sombre, la transmission lumineuse du premier et du deuxième vitrage feuilleté (1, 2) est inférieure ou égale à 5%, notamment inférieure ou égale à 3%.
- Kit selon l’une des revendications précédentes, dans lequel les zones électrocommandables (11, 12, 21, 22) à teinte variable des premier et deuxième vitrages feuilletés comprennent des films interposés (107, 207) entre deux intercalaires de feuilletage (106, 108, 109, 206, 208) et choisis indépendamment parmi les films électrochromes, les films pour dispositifs à particules en suspension et les films à cristaux liquides.
- Kit selon la revendication précédente, dans lequel les films à cristaux liquides sont des films à cristaux liquides dispersés dans un polymère ou des films à cristaux liquides du type invité/hôte.
- Kit selon l’une des revendications 7 ou 8, dans lequel les films (107, 207) des premier et deuxième vitrages feuilletés sont de même nature.
- Kit selon l’une des revendications précédentes, dans lequel la différence ΔTLA à l’état clair et/ou à l’état sombre est inférieure ou égale à 1, notamment inférieure ou égale à 0,5, en valeur absolue.
- Kit selon l’une des revendications précédentes, dans lequel l’écart de couleur en transmission ΔE à l’état clair et/ou à l’état sombre est inférieur ou égal à 4,0, notamment inférieur ou égal à 3,0, voire inférieur ou égal à 2,0.
- Kit selon l’une des revendications précédentes, dans lequel au moins un intercalaire de feuilletage du premier vitrage feuilleté (108) présente une teinte différente de celle du ou de chaque intercalaire de feuilletage du deuxième vitrage feuilleté (206, 208).
- Kit selon l’une des revendications précédentes, dans lequel l’un au moins parmi les premier et deuxième vitrages feuilletés (1, 2) comprend en outre une couche colorée additionnelle (110).
- Kit selon la revendication précédente, dans lequel la couche colorée additionnelle (110) est une couche minérale ou organique déposée sur l’une des feuilles de verre de l’un au moins parmi le premier vitrage feuilleté (1) et le deuxième vitrage feuilleté (2).
- Véhicule automobile (3) comprenant le premier vitrage feuilleté (1) et le deuxième vitrage feuilleté (2) du kit selon l’une des revendications précédentes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23713878.9A EP4499407A1 (fr) | 2022-03-31 | 2023-03-22 | Kit comprenant au moins deux vitrages feuilletés |
| CN202380031797.9A CN118973813A (zh) | 2022-03-31 | 2023-03-22 | 包括至少两个层压玻璃制品的成套组件 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2202933A FR3134031B1 (fr) | 2022-03-31 | 2022-03-31 | Kit comprenant au moins deux vitrages feuilletés |
| FRFR2202933 | 2022-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023186647A1 true WO2023186647A1 (fr) | 2023-10-05 |
Family
ID=81927438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/057291 Ceased WO2023186647A1 (fr) | 2022-03-31 | 2023-03-22 | Kit comprenant au moins deux vitrages feuilletés |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4499407A1 (fr) |
| CN (1) | CN118973813A (fr) |
| FR (1) | FR3134031B1 (fr) |
| WO (1) | WO2023186647A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150367782A1 (en) * | 2014-06-19 | 2015-12-24 | Agp America S.A. | Panoramic extended windshield with integrated non-moving blind |
| EP3350001B1 (fr) * | 2015-10-28 | 2019-06-05 | Vlyte Innovations Limited | Véhicule autonome qui réduit au minimum les réactions humaines |
| WO2020065038A1 (fr) * | 2018-09-27 | 2020-04-02 | Saint-Gobain Glass France | Dispositif electrocommandable a diffusion variable par cristaux liquides et son procede |
-
2022
- 2022-03-31 FR FR2202933A patent/FR3134031B1/fr active Active
-
2023
- 2023-03-22 WO PCT/EP2023/057291 patent/WO2023186647A1/fr not_active Ceased
- 2023-03-22 CN CN202380031797.9A patent/CN118973813A/zh active Pending
- 2023-03-22 EP EP23713878.9A patent/EP4499407A1/fr active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150367782A1 (en) * | 2014-06-19 | 2015-12-24 | Agp America S.A. | Panoramic extended windshield with integrated non-moving blind |
| EP3350001B1 (fr) * | 2015-10-28 | 2019-06-05 | Vlyte Innovations Limited | Véhicule autonome qui réduit au minimum les réactions humaines |
| WO2020065038A1 (fr) * | 2018-09-27 | 2020-04-02 | Saint-Gobain Glass France | Dispositif electrocommandable a diffusion variable par cristaux liquides et son procede |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118973813A (zh) | 2024-11-15 |
| FR3134031B1 (fr) | 2025-03-21 |
| FR3134031A1 (fr) | 2023-10-06 |
| EP4499407A1 (fr) | 2025-02-05 |
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