CN116034042A - Method for producing a partially coated vehicle glazing - Google Patents

Method for producing a partially coated vehicle glazing Download PDF

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Publication number
CN116034042A
CN116034042A CN202280003687.7A CN202280003687A CN116034042A CN 116034042 A CN116034042 A CN 116034042A CN 202280003687 A CN202280003687 A CN 202280003687A CN 116034042 A CN116034042 A CN 116034042A
Authority
CN
China
Prior art keywords
glass sheet
mask
composite glass
glass pane
metal coating
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.)
Pending
Application number
CN202280003687.7A
Other languages
Chinese (zh)
Inventor
A·戈默
J·哈根
S·詹兹克
J·厄肯斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS filed Critical Saint Gobain Glass France SAS
Publication of CN116034042A publication Critical patent/CN116034042A/en
Pending legal-status Critical Current

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    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
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    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
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    • C—CHEMISTRY; METALLURGY
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    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
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    • C—CHEMISTRY; METALLURGY
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    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
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    • C03C2217/00—Coatings on glass
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    • C03C2217/00—Coatings on glass
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    • C03C2217/00—Coatings on glass
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    • C03C2217/258—Ti, Zr, Hf
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
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    • C03C2217/259—V, Nb, Ta
    • C—CHEMISTRY; METALLURGY
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    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/25—Metals
    • C03C2217/261—Iron-group metals, i.e. Fe, Co or Ni
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/10—Deposition methods
    • C03C2218/15—Deposition methods from the vapour phase
    • C03C2218/154—Deposition methods from the vapour phase by sputtering
    • C03C2218/156—Deposition methods from the vapour phase by sputtering by magnetron sputtering
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/34—Masking

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a method for producing a partially coated vehicle glass pane (100), comprising at least the following method steps: (a) providing a composite glass sheet (1) having an outer surface (I) and an inner surface (IV) and surrounding side edges, (B) applying at least one mask (11) on at least one region of the outer surface (I) or the inner surface (IV) of the composite glass sheet (1), (C) applying a metal coating (5) to the outer surface (I) of the composite glass sheet (1) provided with the at least one mask (11) or the inner surface (IV) provided with the at least one mask (11) by means of magnetron sputtering, (D) removing the at least one mask (11) and the metal coating (5) applied to the at least one mask (11) from the outer surface (I) or the inner surface (IV) of the composite glass sheet (1).

Description

Method for producing a partially coated vehicle glazing
The present invention relates to a method of producing a partially coated carrier glass sheet, a partially coated carrier glass sheet produced by the method and uses thereof.
Modern automobiles are increasingly equipped with so-called heads-up displays (HUDs). The image is projected onto the windscreen by a projector, typically located in the dashboard area, where it is reflected and perceived by the driver as a virtual image (from his perspective) behind the windscreen. Important information can thus be projected into the driver's field of view, such as current driving speed, navigation or warning information, which the driver can perceive without having to take his line of sight away from the road. Thus, head-up displays may make a significant contribution to improving traffic safety.
However, a problem with HUD displays is that the area of the windscreen panel arranged to reflect light projected by the projector must have a high transparency, typically at least 70%. Thus, the reflected projector light overlaps with light from the external environment, which depending on the light situation may lead to a reduced contrast of the virtual image and thus to a poor visual perception of the driver. It should be ensured that safety-specific information, such as lane assistance, speed display or engine revolutions, is adequately visually perceived in all weather and light situations. It is therefore desirable to have a projection device based on heads-up display technology in which undesired secondary images do not occur and whose arrangement can be realized relatively easily and at the same time with good visibility and sufficient brightness and contrast of the displayed image information. To achieve this, it is necessary to improve the contrast in the reflective area of the windscreen panel. For example, the contrast improvement may be achieved by making the background of the reflective region largely or completely opaque, or by making the reflective coating itself disposed in the reflective region largely or completely opaque. However, this solution requires that the reflective coating be applied only in a locally limited area of the windscreen panel.
The metal reflective coating is typically applied to the glass sheet by sputtering, particularly magnetron sputtering. In sputtering, atoms are released from a target, such as a metallic material, by ion bombardment. The released material changes its aggregation state from solid to gaseous. Using physical vapor deposition, a glass plate is coated with atoms released from a target in a vacuum chamber. The atoms are here guided through the chamber by an electric field to move onto the glass plate. Thus, they move from the cathode, where the target is arranged, onto the anode. A layer is formed on the glass plate due to the arrangement of the glass plate between the cathode and the anode. In the case of magnetron sputtering, an additional magnetic field is arranged behind the cathode, which results in faster layer growth and a denser, i.e. lower porosity, layer. Patent documents in which sputtering is used to coat glass sheets are known, for example, from WO 9900528A1, DE 10126868C1 and WO 2017198363 A1.
Magnetron sputtering is therefore also suitable for glass sheet coating, since, unlike many other coating techniques, it can also be used in the case of glass sheet bending, for example in the case of glass sheets which are provided for the vehicle industry. However, one disadvantage of sputtering is that, without special precautions, a specific surface area cannot be coated, but only the entire surface.
The possibility of partial coating of vehicle glass sheets is disclosed in CN 112574614A and CN 112456811A.
It is an object of the present invention to provide an improved method of producing a vehicle glass sheet having a locally applied metal coating.
According to the invention, the object of the invention is achieved by a method according to claim 1. Preferred embodiments emerge from the dependent claims.
The method according to the invention for producing a partially coated vehicle glazing comprises at least the following method steps:
(A) Providing a composite glass sheet having an outer surface and an inner surface and surrounding side edges,
(B) At least one mask is applied to at least one region of the outer or inner surface of the composite glass sheet,
(C) A metal coating is applied by means of magnetron sputtering onto the outer surface of the composite glass sheet provided with said mask or onto the inner surface provided with said mask,
(D) The at least one mask and the metal coating applied to the at least one mask are removed from the outer or inner surface of the composite glass sheet.
The process is preferably carried out successively in the stated order, it being possible for further process steps not mentioned here to be carried out between, during, before and after the stated process steps.
By coating the composite glass sheet by means of pre-masking, the metal coating can be applied very precisely on only one area of the outer or inner glass sheet of the composite glass sheet. Coating of glass sheets by means of magnetron sputtering is used according to the standard, but has the disadvantage that only the entire surface can be coated at all times. When referring to laminated composite glass sheets that can be used as carrier glass sheets, for example, in addition to the coating to be applied, the challenge of coating only locally defined areas of the glass surface is greater. In this case, it is often no longer possible to make subsequent corrections to the partially coated carrier glass sheet without damaging the carrier glass sheet. The coating should therefore be applied very precisely, which can be achieved using the method according to the invention.
A composite glass sheet or partially coated vehicle glass sheet is provided for installation in a vehicle, such as a load carrying or man-carrying vehicle. The composite glass sheet is preferably at least partially transparent. The inner surface of the composite glass sheet is disposed to face the vehicle interior space and the outer surface of the composite glass sheet is disposed to face the external environment. The vehicle glazing panel is preferably a windscreen panel.
Magnetron sputtering is a coating method well known to those skilled in the art, in which atoms are released from, for example, a ceramic or metal target by ion bombardment and deposited onto a substrate by physical vapor deposition. In magnetron sputtering, unlike simple sputtering (cathode sputtering), a magnetic field is applied in addition to an electric field, whereby the coating speed can be increased and a denser coating can be achieved. Glass coating by means of magnetron sputtering is known, for example, from DE 69418542T2, US 2011223415A1 and CZ 299337B 6.
In a particular embodiment of the method according to the invention, the composite glass sheet of the partially coated carrier glass sheet comprises
The outer glass sheet is then subjected to a vacuum,
inner glass pane
-a thermoplastic interlayer arranged in a face-shaped form between the outer glass pane and the inner glass pane.
The outer glass sheet has an outer surface facing away from the thermoplastic interlayer and an inner surface facing the thermoplastic interlayer. The inner glass sheet has an outer surface facing the thermoplastic interlayer and an inner surface facing away from the thermoplastic interlayer. Here, the inner surface of the composite glass sheet is also the inner surface of the inner glass sheet, and the outer surface of the composite glass sheet is also the outer surface of the outer glass sheet.
The outer and inner glass sheets comprise, or preferably consist of, soda lime glass, quartz glass or borosilicate glass. The thickness of the individual glass plates (outer and inner glass plates) can vary widely and be adapted to the requirements of the respective case. The outer glass pane and/or the inner glass pane has a thickness of 0.5mm to 15mm, particularly preferably 1mm to 5 mm. Coating the inner surface of the inner glass pane or the outer surface of the outer glass pane by means of magnetron sputtering is particularly suitable for these materials due to the special thermomechanical properties of soda lime glass, quartz glass and borosilicate glass. The outer glass pane and/or the inner glass pane are preferably at least partially transparent, in particular completely transparent.
The inner and/or outer glass sheets may have other suitable coatings known per se, such as anti-reflective, non-stick, scratch-resistant, photocatalytic or sun-protective coatings or low-emissivity coatings.
"applying a metal coating to the outer surface of the composite glass sheet provided with the mask or the inner surface provided with the mask" may also refer to applying to the inner surface or the coated area of the outer surface of the composite glass sheet. For example, the metal coating may also be applied completely or partially to the overlay print.
The inner glass sheet, outer glass sheet and composite glass sheet may have any three-dimensional shape. The inner and outer glass plates preferably have no shadow areas, so that, for example, apart from the coating according to the invention, they can be coated beforehand by means of cathodic sputtering (maskless), in particular magnetron sputtering. The inner and outer glass sheets and thus also the composite glass sheets are preferably bent slightly or strongly in one or more directions of space.
The thermoplastic interlayer comprises or consists of at least one thermoplastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or Polyurethane (PU) or copolymers or derivatives thereof, optionally in combination with polyethylene terephthalate (PET). However, the thermoplastic intermediate layer may also comprise, for example, polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resins, casting resins, acrylates, fluorinated ethylene-propylene, polyvinyl fluoride and/or ethylene-tetrafluoroethylene or copolymers or mixtures thereof.
The thermoplastic interlayer is preferably designed as at least one thermoplastic joining film and comprises, particularly preferably consists of, polyvinyl butyral (PVB) and additives known to the person skilled in the art, for example plasticizers. The thermoplastic tie film preferably comprises at least one plasticizer.
Plasticizers are compounds that make plastics softer, more pliable, softer and/or more elastic. They shift the thermo-elastic range of the plastic to lower temperatures so that the plastic has the desired more elastic properties over the use temperature range. Preferred plasticizers are carboxylic esters, especially less volatile carboxylic esters, fats, oils, soft resins and camphor.
The thermoplastic interlayer may be formed from a single film or more than one film. The thermoplastic interlayer may be formed from one or more thermoplastic films that are stacked on top of each other, wherein the thickness of the thermoplastic interlayer after lamination to form the composite glass sheet is preferably 0.25mm to 1mm, typically 0.38mm or 0.76mm. The thermoplastic intermediate layer may also be formed from a partially colored and thus opaque film.
The thermoplastic intermediate layer may also be a functional thermoplastic film, in particular a film having acoustic damping properties, a film reflecting infrared radiation, a film absorbing infrared radiation and/or a film absorbing ultraviolet radiation. For example, the thermoplastic intermediate layer may be a belt filtration membrane.
In a further particularly preferred embodiment of the process according to the invention, the process steps are carried out
(E) A protective layer is applied over the metal coating.
The protective layer is preferably transparent and is applied in the form of a surface, in particular congruently, to the metal coating. The protective layer is preferably a polymer based on polyacrylate, polyoxime, alkyd, polyurethane or mixtures thereof. The thickness of the protective layer is preferably 50nm to 10. Mu.m, more preferably 100nm to 5. Mu.m. The protective layer is preferably applied to the metal coating by spraying or painting, for example with a pressure atomizer. The protective layer protects the metal coating from mechanical damage, such as scratches. It can also be used to increase the durability of the coating. With the protective layer, less metal particles separate from the composite glass sheet over time and the uniform metal coating of the composite glass sheet retains its shape for a longer period of time.
In a particularly preferred embodiment of the invention, the protective layer is an easy-to-clean layer and/or an "anti-fingerprint" layer. By "easy-to-clean layer" in the present invention is meant that dirt on the protective layer, for example in the form of fingerprints, oil stains and dirt particles, can be removed from the protective layer by using a cloth, preferably a superfine fiber cloth. Thus, for cleaning the protective layer, dissolution of grease or wiping cleaners and solvents, such as those based on alcohols, is substantially avoided. In the context of the present invention, an "anti-fingerprint" layer refers to a layer where the fingerprint attached to the protective layer is hardly or not at all visually perceptible. Fingerprints refer in particular to the greasy component of a human finger which remains on the surface when touching the surface and may produce an unsightly effect.
If something is formed "based on" a polymeric material, it is composed mainly, i.e. at least 50%, preferably at least 60%, in particular at least 70%, of this material. It may also contain other materials, such as stabilizers or plasticizers.
The process according to the invention can be carried out in a different order. The preferred sequence of method steps is shown below, wherein the first-mentioned method steps are also the first-occurring method steps, and the subsequent method steps are performed in the sequence in which they are mentioned.
1. First preferred sequence:
(A) Providing a composite glass sheet having an outer surface and an inner surface and surrounding side edges;
(B) Applying at least one mask to at least one region of the outer or inner surface of the composite glass sheet;
(C) Applying a metal coating by means of magnetron sputtering onto the outer surface of the composite glass sheet provided with said mask or onto the inner surface provided with said mask;
(D) Removing the at least one mask and the metal coating applied to the at least one mask from the outer or inner surface of the composite glass sheet;
(E) A protective layer is applied over the metal coating.
2. Second preferred sequence:
(A) Providing a composite glass sheet having an outer surface and an inner surface and surrounding side edges;
(B) Applying at least one mask to at least one region of the outer or inner surface of the composite glass sheet;
(C) Applying a metal coating by means of magnetron sputtering onto the outer surface of the composite glass sheet provided with said mask or onto the inner surface provided with said mask;
(E) Applying a protective layer over the metal coating;
(D) The at least one mask and the metal coating applied to the at least one mask are removed from the outer or inner surface of the composite glass sheet.
A protective layer may be applied over the metal coating after removal of the mask. Preferably, the protective layer is applied after the metal coating has been applied to the outer or inner surface of the composite glass sheet, but before the mask is removed. In this way, the protective layer can also be applied very precisely and accurately to the metal coating, without the protective layer also being applied to the areas of the composite glass pane which are not coated with the metal coating.
The at least one mask may be designed as a plate-shaped material, which is preferably a metal plate. In this case, the at least one mask preferably has the same curvature as the composite glass sheet, so that the at least one mask can be applied to at least one region of the outer or inner surface of the composite glass sheet with an exact fit. Thus, the at least one mask is preferably bent in the same way as at least one region of the composite glass sheet. The plate-like material preferably comprises or consists of stainless steel, aluminum or copper. Mixtures of these metals or steels are also possible.
Alternatively, the at least one mask is a film adhered to the inner or outer surface of the composite glass sheet. The adhesive film is preferably formed from a film and a pressure sensitive adhesive applied to one side of the film that enables the film to adhere to the composite glass sheet. However, the adhesive film may also be formed of a self-adhesive film alone. Preferably, the adhesive film may be removed from the inner or outer surface of the composite glass sheet in method step (D) without residue. The film may be formed based on a plastic film, a plastic foam, a paper film, a metal film or a woven fabric. The film preferably comprises or consists of polyethylene, polycarbonate, polyisobutylene, polyimide, polyvinylchloride, polyethylene and/or polypropylene, in particular polyimide. Polyimide is particularly suitable as a mask material in magnetron sputtering because of its electrical insulating properties. In addition, it is also temperature resistant at high temperatures up to 470 ℃ and furthermore has no tendency to exhaust. The pressure-sensitive adhesive preferably comprises or consists of natural rubber, synthetic rubber, acrylic, polyurethane and/or silicone.
If the at least one mask is designed as a plate-shaped material, it is preferred that only exactly one mask is used in method step (B) to cover the inner or outer surface of the composite glass sheet. In this case, the mask has, for example, a recess, or its area is smaller than the inner or outer surface of the composite glass pane, so that a specific region of the composite glass pane is not covered by the mask and can be coated in method step (C) by means of magnetron sputtering. A great advantage of using a plate-like material as a mask is its reusability. If the at least one mask is designed as a plate-shaped material, it can be used as a mask several times when coating a composite glass plate of the same structure.
If the at least one mask is designed as an adhesive film, it is preferred to use more than one mask in method step (B) to cover the inner or outer surface of the composite glass sheet. The masks may also be partially overlapped in this case, so that the masks are partially glued to one another. In this case, the mask is not applied to the region or regions of the outer or inner surface of the composite glass sheet that should be coated with the metal coating in method step (C). For this purpose, the mask may also have a notch. The biggest advantage of using a mask as an adhesive film is its flexible usability. Masks as adhesive films may be arranged and applied in different ways on the outer or inner surface of the composite glass sheet as desired. This simplifies the process flow, since the mask adheres to the outer or inner surface of the composite glass sheet, and furthermore undesired movements of the mask on the inner or outer surface are almost excluded.
The metal coating preferably comprises at least one metal selected from the group consisting of aluminum, magnesium, tin, indium, titanium, tantalum, niobium, nickel, copper, chromium, cobalt, iron, manganese, zirconium, cerium, scandium, yttrium, silver, gold, platinum and palladium, ruthenium or mixtures thereof. Aluminum, chromium, titanium, and/or nickel are preferably applied to the composite glass sheet because they can be highly reflective for p-polarized or s-polarized light. It is therefore particularly suitable in the case of a composite glass sheet as an integral part of a projection device, wherein the virtual image has to be reflected by the composite glass sheet, preferably by the inner surface of the composite glass sheet.
The metal coating preferably has a thickness of from 1nm (nanometer) to 1 μm (micrometer), particularly preferably from 5nm to 500nm, very particularly preferably from 10nm to 100nm, in particular from 20nm to 80 nm.
In a particular embodiment of the invention, the metal coating is a coating comprising a stack of thin layers, i.e. a sequence of layers of a thin monolayer. The thin layer stack preferably comprises a plurality of conductive layers based on at least one metal selected from the group consisting of aluminum, magnesium, tin, indium, titanium, tantalum, niobium, nickel, copper, chromium, cobalt, iron, manganese, zirconium, cerium, scandium, yttrium, silver, gold, platinum and palladium, ruthenium or mixtures thereof. The thin layer stack may also comprise or consist of steel or stainless steel. Conductive layers based on metals, alloys or mixtures of metals give the metal coating basic reflective properties, IR reflecting effects and conductivity. The electrically conductive layer preferably comprises at least 90% by weight of a metal, an alloy or a metal mixture, particularly preferably at least 99% by weight of a metal, an alloy or a metal mixture, very particularly preferably at least 99.9% by weight of a metal, an alloy or a metal mixture. The layer based on a metal, alloy or metal mixture may have a dopant, such as palladium, gold, copper or silver.
Materials based on nickel, titanium, chromium and/or aluminum are particularly suitable for reflecting light, with p-polarized light being particularly preferred. The use of nickel, titanium, chromium and/or aluminum in the metal coating and the thin layer stack has been found to be particularly advantageous for reflecting light. Nickel, titanium, chromium and/or aluminum are significantly cheaper than many other metals, such as gold or silver. The individual layers of the thin-layer stack preferably have a thickness of 1nm to 10 nm. The thin-layer stack preferably has 2 to 20 monolayers, in particular 5 to 10 monolayers.
If a thin layer (lamina) "is formed on" a material, it is composed primarily, i.e. at least 90% of this material, in particular essentially at least 99% of this material, apart from possible impurities or dopants.
The metal coating is preferably opaque or partially opaque, which in the context of the present invention means that it has an average transmission in the visible spectral range of preferably at most 80%, particularly preferably at most 50%, in particular less than 10% (according to ISO 9050:2003). The metal coating preferably reflects at least 10%, particularly preferably at least 50%, very particularly preferably at least 80%, in particular at least 90%, of the light impinging on the metal coating. The metal coating preferably reflects the same proportion of p-polarized light and s-polarized light, but it may also reflect p-polarized light and s-polarized light to a different extent.
The light reflected by the metal coating is preferably visible light, i.e. light having a wavelength in the range of about 380nm to 780 nm. The metal coating preferably has a high and uniform reflectivity (at different angles of incidence) for p-polarized and/or s-polarized radiation, so that a high intensity and color neutral image display is ensured.
The polarization direction is based here on the plane of incidence of the radiation on the composite glass pane. p-polarized radiation refers to radiation whose electric field oscillates in the plane of incidence. s-polarized radiation refers to radiation whose electric field oscillates perpendicular to the plane of incidence. The incidence plane is stretched by the incidence vector and the normal line of the composite glass plate surface of the geometric center of the irradiated area.
In other words, the polarization, i.e. in particular the ratio of p-polarized radiation and s-polarized radiation, is determined at a point in the area illuminated by the image display device, preferably at the geometric center of the illuminated area. Since the composite glass pane may be curved (for example when it is designed as a windscreen pane), which affects the plane of incidence of the radiation of the image display device, a slightly different polarization ratio may occur in the remaining region, which is unavoidable for physical reasons.
In a preferred embodiment of the invention, the mask is applied outside the edge region of the composite glass sheet such that the mask extends over at most 95%, preferably at most 90%, of the total area of the composite glass sheet. The edge region is a region at least partially immediately adjacent to the surrounding side edge. Since the mask is not applied in this edge region, this region of the outer or inner surface of the composite glass sheet is coated with a metal coating in method step (C).
In a particularly preferred embodiment of the invention, the mask is preferably not applied in the region along the entire circumferential side edge of the composite glass pane, so that there is a central perspective region of the composite glass pane, which is surrounded by the region with the metal coating, according to the method of the invention. Alternatively, the composite glass sheet is devoid of a mask in a locally adjacent section of the surrounding side edge of the composite glass sheet, preferably along the lower edge of the composite glass sheet (glass sheet root of the composite glass sheet). Here too, no mask is applied to the outer or inner surface of the composite glass pane in method step (B). The lower edge of the composite glass sheet is disposed to face the bottom when installed in the vehicle, and the upper edge of the composite glass sheet is disposed to face away from the bottom. The width of the region not covered by the mask is preferably at least 10cm, particularly preferably at least 20cm, in particular at least 30cm. In the context of the present invention, "width" refers to a width perpendicular to the direction of extension.
The composite glass pane may have one or more than one covering print, which is made in particular of dark, preferably black enamel. The at least one overlay print may be applied to the inner or outer surface of the outer and/or inner glass sheets; the at least one overlay print is preferably applied to the outer surface of the inner glass pane and/or the inner surface of the outer glass pane. The cover print is used primarily as an ultraviolet shield for the assembly adhesive of the composite glass sheets. The overlay print may be designed to be opaque. The at least one covering print may also be designed at least partially to be translucent, for example as a dot grid, a stripe grid or a diamond grid. Alternatively, the first overlay print may also have a gradient, for example from opaque overlay to translucent overlay. The first overlay print may also be applied to the inner or outer surface of the inner glass sheet and the second overlay print may be applied to the inner or outer surface of the outer glass sheet. The at least one cover print preferably extends over less than 30%, particularly preferably less than 25%, in particular less than 20% of the main surface of the composite glass pane.
In a preferred embodiment of the method according to the invention, the at least one overlay print is applied to the outer surface of the inner glass pane or to the inner surface of the outer glass pane. In this embodiment, a mask is applied to a region of the inner surface of the composite glass sheet (method step (B)) that does not partially overlap or completely overlap the at least one overlay print when viewed through the composite glass sheet. This means that in method step (C) a metallic coating is applied to a region of the inner surface of the composite glass pane which, when viewed through the composite glass pane, at least partially overlaps the at least one overlay print or completely overlaps it.
The at least one overlay print is preferably applied in a frame form along the surrounding side edges of the composite glass sheet. The at least one covering print furthermore preferably has a greater width in the region overlapping the region not covered by the mask in method step (B). In the context of the present invention, "width" refers to a width perpendicular to the direction of extension. This arrangement is particularly advantageous when a composite glass sheet is used as an integral part of the projection device. Due to the covering print, no light escapes from the inner space to the outside, and the contrast of the virtual image reflected on the metal coating is improved in the region overlapping the covering print.
In a particularly preferred embodiment of the invention, at least one overlay print is applied to at least one edge region of the inner surface of the outer glass pane. In this case, the at least one mask is applied to the inner surface of the inner glass pane in method step (B) such that it does not overlap the covering print at most partially, preferably at all, when viewed through the composite glass pane.
The at least one mask preferably extends in the entire area of the inner surface of the inner glass pane which does not overlap with the at least one overlay print. In this way, the metallic coating is not visible when seen through the composite glass sheet in the viewing direction from the outer glass sheet to the inner glass sheet, whereby an aesthetic improvement of the glass sheet can be achieved.
For example, a description of element a fully overlapping element B means in the context of the present invention that the orthogonal projection of element a onto the surface plane of element B is fully arranged within element B. Accordingly, partial or partial overlap means that the orthogonal projection of element a is partially, but not fully, arranged on the surface plane of element B.
In the context of the present invention, "overlap" refers to, for example, a partial overlap of element a and element B, wherein element a and element B are in spatial contact with each other with overlap.
The thermoplastic interlayer may also include at least one of an opaque thermoplastic film and a transparent thermoplastic film. The opaque thermoplastic film and the transparent thermoplastic film are preferably arranged offset from one another such that the two films do not overlap or overlap when viewed through the composite glass sheet. The opaque film preferably extends over less than 30%, particularly preferably less than 25%, in particular less than 20% of the major surface of the composite glass pane. The transparent film preferably extends over more than 30%, particularly preferably more than 85%, in particular more than 80% of the main surface of the composite glass pane. The transparent film and the opaque film are composed of or preferably comprise the same plastic. Materials from which the opaque and transparent films can be formed are those also described for the thermoplastic interlayer. The opaque film is preferably a colored film, which may have various colors (e.g., blue, green, black, white, gray, red, and yellow).
As mentioned above, the thermoplastic intermediate layer may also be designed in the form of a partially opaque colored thermoplastic film. The partially opaque colored thermoplastic film is opaque in one or more regions and transparent in one or more regions in a top view looking into the film. The opaque region preferably extends over less than 30%, particularly preferably less than 25%, in particular less than 20% of the main surface of the composite glass pane. The transparent region preferably extends over more than 30%, particularly preferably more than 85%, in particular more than 80% of the main surface of the composite glass pane.
In a preferred embodiment of the invention, the at least one mask is applied in a method step to all areas of the inner surface of the inner glass pane which do not overlap with the opaque thermoplastic film or the at least one opaque colored region. Thus in method step (C) a metal coating is applied to the inner surface of the inner glass sheet in a region that completely overlaps the opaque thermoplastic film or the at least one opaque colored region. The opaque region of the opaque film or of the partially opaque colored thermoplastic film is preferably arranged here along the lower edge and adjacent to the lower edge. In a top view looking into the composite glass sheet, a rectangular opaque strip is thereby created that is disposed along the lower edge. Such an arrangement enables a projection device with a high contrast image in the area of the opaque film or opaque area if the composite glass sheet is used, for example, as a windshield sheet in a vehicle. Since the opaque film or opaque region is disposed along the lower edge, the see-through region of the composite glass sheet remains transparent. Alternatively, the opaque film or opaque region is arranged in a frame-like fashion around the edge region of the composite glass pane and has a greater width, in particular in the region arranged to overlap the metal coating, than in the region differing therefrom. If the thermoplastic interlayer is formed from an opaque film and a transparent film, the transparent film is preferably disposed within an opaque frame formed from the opaque film. The opaque film is thus arranged around the transparent film in a frame-like manner.
In the context of the present invention, "transparent" means that the total transmittance of the composite glass sheet complies with the legal requirements regarding the windscreen sheet and preferably has a transmittance for visible light of more than 30%, in particular more than 60%, for example more than 70% (according to ISO 9050:2003). Accordingly, "opaque" means a light transmission of less than 15%, preferably less than 10%, particularly preferably less than 5%, in particular 0%.
The invention also relates to a partially coated vehicle glazing according to the invention comprising at least:
-a composite glass sheet having an outer surface, an inner surface and surrounding side edges, and
a metallic coating applied locally on the inner or outer surface of the composite glass sheet by the method according to the invention.
In a particularly preferred embodiment of the invention, the composite glass sheet of the partially coated carrier glass sheet comprises at least:
an outer glass plate having an outer surface and an inner surface,
an inner glass pane having an outer surface and an inner surface, and
-a thermoplastic intermediate layer.
The thermoplastic interlayer is disposed between the outer glass sheet and the inner glass sheet, wherein the outer surface of the inner glass sheet and the inner surface of the outer glass sheet face each other. The outer surface of the outer glass sheet is also the outer surface of the composite glass sheet and the inner surface of the inner glass sheet is also the inner surface of the composite glass sheet.
The invention further relates to the use of a partially coated vehicle glazing according to the invention in an amphibious vehicle, in particular in a motor vehicle, for example as a windscreen, rear glass panel, side glass panel and/or roof or as a component part thereof, preferably as a windscreen. The partially coated vehicle glass pane is preferably used here as a component of a projection device. The virtual image is projected from the image display device onto the metal coating. The metallic coating reflects the virtual image to a vehicle occupant, such as a driver, thereby making it possible to visually perceive the information in the image.
In a particularly preferred embodiment of the invention, the vehicle glazing according to the invention is a windscreen or a component of a windscreen of a vehicle. The metal coating is provided here as a reflective coating, wherein it is applied in the lower region of the windscreen plate, i.e. along the lower edge of the windscreen plate. The metal coating thus extends from the left edge of the windscreen to the right edge of the windscreen and here along the lower edge of the windscreen. In this case, the width of the metal coating is preferably at least 20cm, particularly preferably at least 30cm, in particular at least 40cm.
Furthermore, the invention extends to a projection device comprising a windscreen panel and an image display device. The image display device is directed towards the reflective coating and is adapted to irradiate the reflective coating with visible light, wherein the reflective coating is adapted to reflect visible light. The image display device preferably includes a Liquid Crystal (LCD) display, a Thin Film Transistor (TFT) display, a Light Emitting Diode (LED) display, an Organic Light Emitting Diode (OLED) display, an Electroluminescent (EL) display, or a micro LED display.
The invention will be explained in more detail below using examples, wherein reference is made to the accompanying drawings. They are shown in simplified illustrations not to true scale:
figure 1 is a top view of one embodiment of a vehicle glazing according to the invention,
figure 2 is a cross-sectional view of the vehicle glazing panel of figure 1,
figures 3-4 are cross-sectional views of another embodiment of a vehicle glazing panel according to the invention,
figure 5 is a top view of a composite glass sheet in an embodiment of the method according to the invention,
FIG. 6 is a cross-sectional view of a composite glass sheet in the embodiment of the method according to the invention of FIG. 5, and
fig. 7 is a cross-sectional view of a composite glass sheet in an extended embodiment of the method according to the invention of fig. 5 and 6.
Fig. 1 and 2 show details of a vehicle glazing 100 according to the invention, respectively, as may be obtained by a method according to the invention. Fig. 1 shows a top view of a vehicle glass plate 100 according to the invention, and fig. 2 shows a cross-sectional view of the vehicle glass plate 100 of fig. 1. The cross-sectional view of fig. 2 corresponds to the cut line A-A' of the vehicle glass plate 100 shown in fig. 1.
The vehicle glass sheet 100 includes an outer glass sheet 2, an inner glass sheet 3, and a thermoplastic interlayer 4 disposed between the outer glass sheet 2 and the inner glass sheet 3. The vehicle glass plate 100 is mounted, for example, in a vehicle (not shown here) and separates the interior space 9 from the external environment 10. For example, the vehicle glazing 100 is a windshield of an automobile. Thus, the inner glass pane 3 faces, for example, the inner space 9 and the outer glass pane 2 faces, for example, the outer environment 10.
The outer glass pane 2 and the inner glass pane 3 are each made of glass, preferably thermally prestressed soda lime glass, and are transparent to visible light. The thermoplastic interlayer 4 is composed of a thermoplastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or polyethylene terephthalate (PET). The inner glass plate 3 has a thickness of 1.6mm, for example. The outer glass pane 2 has a thickness of 2.1mm, for example, and the thermoplastic interlayer 4 has a thickness of 0.5mm, for example.
The outer surface I of the outer glass pane 2 faces away from the thermoplastic interlayer 4 and is at the same time the outer surface of the vehicle glass pane 100. The inner surface II of the outer glass pane 2 and the outer surface III of the inner glass pane 3 respectively face the intermediate layer 4. The inner surface IV of the inner glass sheet 3 faces away from the thermoplastic interlayer 4 and is at the same time the inner surface of the vehicle glass sheet 100. It should be appreciated that the vehicle glazing panel 100 can have any of a variety of suitable geometries and/or curvatures. As a windshield plate, it generally has a convex curvature. The vehicle glazing panel 100 also has surrounding side edges, which in the installed position include an upper edge at the upper part and a lower edge at the lower part, and two side edges at the left and right.
Fig. 1 shows a top view of the inner surface IV of the inner glass pane 3. Fig. 2 shows that a first cover print 7, 7a (not shown in black in the top view of fig. 1, to better show the shape of the vehicle glazing panel 100) is applied in the form of a frame on the inner surface IV of the inner glazing panel 3 in the edge regions 8, 8a, 8 b. The first overlay print 7, 7b is opaque and consists of a non-conductive material typically used for overlay prints, such as fired black coloured screen printing ink.
As shown in fig. 2, the vehicle glass pane 100 also has a second coating print 7, 7b on the inner surface II of the outer glass pane 2 in the edge regions 8, 8a, 8 b. The second overlay print 7, 7b is designed to surround in the form of a frame. Like the first overlay print 7, 7a, the second overlay print 7, 7b is composed of a non-conductive material commonly used for overlay prints, such as fired black coloured screen printing ink. The first and second cover prints 7, 7a, 7b are also provided, for example, for preventing a view from the outside to structures arranged inside the vehicle glass plate 100, for example adhesive strips for gluing the vehicle glass plate 100 into a vehicle body.
Locally on the inner surface IV of the inner glass pane 3 there is a metal coating 5, which is applied by the method according to the invention. The metal coating 5 is applied in an area near the lower edge of the vehicle glazing panel 100. The metal coating 5 is completely adjacent to the region of the first covering print 7, 7a extending along the lower edge. The metal coating 5 is also locally adjacent to the areas of the first overlay print 7, 7a extending along the left and right edges. The metal coating 5 is thus applied outside the see-through area of the vehicle glazing panel 100 and will be arranged in a strip from left to right above the dashboard in the installed position in the vehicle. The metal coating 5 consists, for example, of an aluminium layer with a thickness of 50 nm. The metal coating 5 has a reflective property to visible light and for example reflects at least 80% of the visible light impinging thereon. The metal coating 5 can also overlap the first and/or second cover print 7, 7a, 7b locally. The metal coating 5 can also be applied locally to the first overlay print 7, 7 a.
The vehicle glazing 100 may be used as an integral part of a projection device. If the vehicle glass sheet 100 is installed in a vehicle as a windshield sheet, an LED display installed in a dashboard may be used as an image generator, for example. At this time, the LED display is used to generate light (image information) which is emitted onto the metal coating 5 and radiated as reflected light by the metal coating 5 into the interior space 9 where it can be seen by a viewer, such as a driver. The metal coating 5 is designed to be suitable for reflecting light of an LED display, i.e. typically an image of an image display. In this way, information such as vehicle speed, fuel gauge, or cooler temperature may be visually conveyed to one or more vehicle occupants. The use of the windscreen 100 for this purpose enables the space requirement of the dashboard (in the conventional manner the information is displayed by a display) to be reduced at the same time.
The variations in the cross-sectional form shown in fig. 3 and 4 correspond substantially to the vehicle glass sheet 100 of fig. 1 and 2, so only the differences will be discussed herein, with reference to the description of fig. 1 and 2 in other respects.
In the variant of the vehicle glass plate 100 shown in fig. 3, the second cover print 7, 7b has a widening along the lower edge of the vehicle glass plate 100 in the edge region 8, 8a of the vehicle glass plate 100, so that the second cover print 7, 7b covers the metal coating 5 when seen through the vehicle glass plate 100 and when seen from the outside environment 10 towards the interior space 9. The metal coating 5 is thus applied thereto such that it is completely covered by the second covering print 7, 7 b.
Furthermore, a transparent protective layer 6 is applied congruently to the metal coating 5. The protective layer 6 is formed, for example, based on a polyoxime and has a thickness of 1 μm. The protective layer 6 protects the metal coating 5 from mechanical damage, such as scratches.
By covering the partially light-transmitting metal coating 5 with the second cover print 7, 7b, a higher image contrast can be achieved when the vehicle glass plate 100 is used as a component of a projection device. Furthermore, by masking the metal coating 5, a more aesthetically pleasing overall image of the vehicle glazing 100 from the perspective of the external environment 10 can be obtained.
In contrast to the variants shown in fig. 1 and 2, the glass pane 100 according to the invention shown in fig. 4 has no second overlay print 7, 7b. The thermoplastic intermediate layer 4 is formed of an opaque thermoplastic film 4a and a transparent thermoplastic film 4b. The opaque thermoplastic film 4a and the transparent thermoplastic film 4b are composed of, for example, thermoplastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or polyethylene terephthalate (PET) and have a thickness of 0.38 mm. For example, the opaque thermoplastic film 4a is black colored. The opaque thermoplastic film 4a and the transparent film 4b are arranged offset from each other and do not overlap when viewed through the vehicle glazing 100. The opaque thermoplastic film 4a is applied in a frame form around and ends flush with the upper edge, lower edge and both side edges of the vehicle glazing panel 100. The transparent thermoplastic film 4b is arranged within a frame-shaped opaque film 4a surrounding the see-through area of the vehicle glass plate 100. The opaque film 4a widens along the lower edge of the vehicle glass plate 100 in the edge regions 8, 8a of the vehicle glass plate 100, so that the opaque thermoplastic film 4a covers the metal coating 5 when seen through the vehicle glass plate 100 and from the external environment 10 towards the interior space 9. The metal coating 5 is thus applied to the inner surface IV of the inner glass plate 3 such that it is completely covered by the opaque thermoplastic film 4 a. By covering the partially light-transmitting metal coating 5 with the opaque film 4a, higher image contrast can be achieved when the vehicle glass plate 100 is used as a constituent of a projection device. Furthermore, by masking the metal coating 5, a more aesthetically pleasing overall image of the vehicle glazing 100 from the perspective of the external environment 10 can be obtained.
Fig. 5 and 6 illustrate one embodiment of a method according to the present invention for producing a vehicle glass sheet 100 as shown, for example, in fig. 1 and 2. Fig. 5 shows a top view of the composite glass sheet 1 after each method step, and fig. 6 shows a cross-sectional view of the composite glass sheet 1 after each method step of fig. 5. The cross-sectional view of fig. 6 corresponds to the cutting line B-B' of the composite glass sheet 1 shown in fig. 5.
First, a composite glass sheet 1 including an inner glass sheet 3, an outer glass sheet 2, and a thermoplastic interlayer 4 is provided (fig. 5 (a) and 6 (a)). A thermoplastic interlayer 4 is arranged between the inner glass pane 3 and the outer glass pane 2. The inner glass pane 3 has an outer surface III facing the thermoplastic interlayer 4 and an inner surface IV facing away from the thermoplastic interlayer 4. The cover print 7, 7a is applied in the form of a frame to the inner surface IV along the upper, lower and side edges of the composite glass sheet 1. The outer glass pane 2 has an outer surface I facing away from the thermoplastic interlayer 4 and an inner surface II facing the thermoplastic interlayer 4. The second cover print 7, 7b is applied in the form of a frame to the inner surface II of the outer glass pane 2 along the upper, lower and side edges of the composite glass pane 1.
In a second method step, a mask 11 is applied to the inner surface IV of the inner glass pane 3 (fig. 5 (B) and 6 (B)). The mask 11 is composed of, for example, a continuous plate-like material of copper, which has the same curvature (preferably convex curvature) as the composite glass sheet 1. The mask 11 is applied on the inner surface IV flush with the upper, lower and side edges of the composite glass sheet 1. The mask 11 has a notch 12, whereby the inner surface IV of the inner glass plate 3 is not completely covered by the mask 11. The notches 12 are arranged in the lower region, closer to the lower edge than the upper edge of the composite glass sheet 1, and extend from left to right with a width of, for example, 30 cm. "width" in the context of the present invention means the width perpendicular to the direction of extension. The recess 12 is adjacent to the first cover print 7, 7a on the left, right and lower sides in a plan view of the composite glass pane 1.
In the third method step, the inner surface IV of the inner glass plate 3 is coated with a metal coating 5 by means of magnetron sputtering (fig. 5 (C) and fig. 6 (C)). Due to the mask 11 on the inner surface IV of the inner glass pane 3, the mask 11 is coated with the metal coating 5, wherein the metal coating 5 is applied directly onto the inner surface IV of the inner glass pane 3 in the region of the indentations 12 of the mask 11.
In the final method step, the mask 11 coated with the metal coating 5 is removed from the inner surface IV of the inner glass pane 3 (fig. 5 (D) and fig. 6 (D)). The metal coating 5 applied in the region of the notch 12 is still left after removal of the mask 11. The inner surface IV of the inner glass pane 3 thus has a locally applied metal coating 5. By means of the method according to the invention, a clean separation region is achieved here between the uncoated region and the coated region of the inner surface IV of the inner glass pane 3. Magnetron sputtering can thus be used for partial coating by the method according to the invention, not just for full-face coating.
Fig. 7 shows first the method steps shown and described for fig. 6, wherein then in a fifth method step the protective layer 6 is applied to the metal coating 5, for example by means of a pressure atomizer (fig. 7 (E)). The protective layer 6 is applied congruently with the metal coating 5. As an alternative to what is illustrated in fig. 7, the protective layer 6 can also be applied after the third method step (fig. 7 (C)). Here too, the mask 11 prevents the protective layer 6 from being applied to the inner surface IV of the inner glass pane 3 outside the metal coating 5.
List of reference numerals
1. Composite glass plate
2. Outer glass plate
3. Inner glass plate
4. Thermoplastic interlayers
4a opaque thermoplastic film
4b transparent thermoplastic film
5. Metal coating
6. Protective layer
7. 7a, 7b cover print
8. Edge region
8a lower edge region
8b upper edge region
9. Interior space
10. External environment
11. Mask for mask
12. Notch
100. Glass plate for vehicle
The outer surface of the outer glass plate 2
II inner surface of outer glass pane 2
III the outer surface of the inner glass pane 3
Inner surface of IV inner glass sheet 3
A-A' cross-section through the vehicle glazing 100 of FIG. 1
B-B' cross section through the composite glass sheet 1 of FIG. 5.

Claims (15)

1. A method for producing a partially coated vehicle glazing panel (100), comprising at least the following method steps:
(A) Providing a composite glass sheet (1) having an outer surface (I) and an inner surface (IV) and surrounding side edges,
(B) Applying at least one mask (11) on at least one region of the outer surface (I) or the inner surface (IV) of the composite glass pane (1),
(C) Applying a metallic coating (5) by means of magnetron sputtering onto the outer surface (I) of the composite glass pane (1) provided with the at least one mask (11) or the inner surface (IV) provided with the at least one mask (11),
(D) The at least one mask (11) and the metal coating (5) applied to the at least one mask (11) are removed from the outer surface (I) or the inner surface (IV) of the composite glass sheet (1).
2. The method according to claim 1, wherein the composite glass sheet (1) comprises at least
An outer glass pane (2),
-an inner glass pane (3)
A thermoplastic intermediate layer (4) arranged in the form of a surface between the outer glass pane (2) and the inner glass pane (3),
wherein the outer glass pane (2) has an outer surface (I) facing away from the thermoplastic intermediate layer (4) and an inner surface (II) facing the thermoplastic intermediate layer (4), and the inner glass pane (3) has an outer surface (III) facing the thermoplastic intermediate layer (4) and an inner surface (IV) facing away from the thermoplastic intermediate layer (4),
Wherein the inner surface (IV) of the composite glass sheet (1) is also the inner surface (IV) of the inner glass sheet (3) and the outer surface (I) of the composite glass sheet (1) is also the outer surface (I) of the outer glass sheet (2).
3. The method of claim 1 or 2, further comprising:
(E) A protective layer (6) is applied to the metal coating (5),
wherein the protective layer (6) is preferably applied after the method step (C) and before the method step (D).
4. A method according to any one of claims 1 to 3, wherein the at least one mask (11) consists of a plate-like material, preferably a metal plate.
5. The method according to claim 4, wherein the plate-like material consists of metal or steel, preferably stainless steel, aluminum or copper.
6. A method according to claims 1 to 3, wherein the at least one mask (11) consists of a film adhered to the Inner (IV) or outer (I) surface of the composite glass sheet (1).
7. The method of claim 6, wherein the adhesive film comprises polyimide.
8. The method according to any one of claims 1 to 7, wherein the metal coating (5) comprises or consists of aluminum, titanium, nickel, chromium, steel, stainless steel or mixtures thereof.
9. The method according to any one of claims 1 to 8, wherein the metal coating (5) reflects at least 10%, preferably at least 50%, particularly preferably at least 80%, in particular at least 90% of visible light.
10. The method according to any one of claims 1 to 9, wherein the at least one mask (11) is applied outside an edge region (8, 8 a) of the composite glass sheet (1) such that the at least one mask (11) extends over at most 95%, preferably at most 90%, of the total area of the composite glass sheet (1).
11. Method according to any one of claims 2 to 10, wherein a cover print (7, 7 b) is applied in at least one edge region (8, 8 a) of the inner surface (II) of the outer glass pane (2),
wherein in method step (B) the at least one mask (11) is applied to the inner surface (IV) of the inner glass pane (3) in such a way that it at most partially, preferably completely, does not overlap the covering print (7, 7B) when viewed through the composite glass pane (1).
12. Method according to claim 11, wherein the at least one mask (11) is applied in method step (B) at least to all areas of the inner surface (IV) of the inner glass pane (3) that do not overlap with the covering print (7, 7B).
13. The method according to any one of claims 2 to 10, wherein the thermoplastic intermediate layer (4) comprises at least one first opaque thermoplastic film (4 a) and a second transparent thermoplastic film (4 b), or the thermoplastic intermediate layer (4) is designed as a thermoplastic film with at least one opaque colored region,
Wherein in method step (B) the at least one mask (11) is applied at least to all areas of the inner surface (IV) of the inner glass pane (3) that do not overlap with the opaque thermoplastic film (4 a) or the at least one opaque colored area.
14. A partially coated carrier glass sheet (100) produced by the method according to any one of claims 1 to 13.
15. Use of a partially coated vehicle glazing panel (100) according to claim 14 in an amphibious vehicle, in particular in a motor vehicle, for example as a windscreen, rear glazing panel, side glazing panel and/or glazing roof or as a component part thereof, preferably as a windscreen panel.
CN202280003687.7A 2021-08-26 2022-08-03 Method for producing a partially coated vehicle glazing Pending CN116034042A (en)

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DE69418542T2 (en) 1993-07-28 1999-09-16 Asahi Glass Co Ltd Process for the production of functional coatings
DE19726966C1 (en) 1997-06-25 1999-01-28 Flachglas Ag Process for the production of a transparent silver layer with a high specific electrical conductivity, glass pane with a thin layer system with such a silver layer and its use
DE10126868C1 (en) 2001-06-01 2002-11-21 Saint Gobain Sekurit D Gmbh Opaque-coated panel e.g. glass window panel, incorporates multi-layer electroluminescent lighting element
US20090295681A1 (en) * 2008-05-27 2009-12-03 Gm Global Technology Operations, Inc. Virtual Image System for Windshields
DE102008028141A1 (en) 2008-06-13 2009-12-17 Audi Ag glass product
EP3458899B1 (en) 2016-05-17 2022-04-06 Saint-Gobain Glass France Head-up display system
CN112574614B (en) 2020-11-18 2022-05-10 福耀玻璃工业集团股份有限公司 Printing composition for laser film removal and method for manufacturing laminated glass
CN112456811B (en) 2020-11-18 2022-05-10 福耀玻璃工业集团股份有限公司 Coated glass and laminated glass thereof
WO2022112582A1 (en) * 2020-11-30 2022-06-02 Saint-Gobain Glass France Method for producing a curved pane with a functional layer

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