Classifications

• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3626—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3644—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the metal being silver
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3652—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the coating stack containing at least one sacrificial layer to protect the metal from oxidation
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
  • C03C17/366—Low-emissivity or solar control coatings
• • 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
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3681—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating being used in glazing, e.g. windows or windscreens
• • C—CHEMISTRY; METALLURGY
  • C03—GLASS; MINERAL OR SLAG WOOL
  • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
  • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
  • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
  • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
  • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
  • C03C17/3684—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating being used for decoration purposes
• • 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
  • C03C2204/00—Glasses, glazes or enamels with special properties
  • C03C2204/08—Glass having a rough surface
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/20—Filters
  • G02B5/28—Interference filters
  • G02B5/281—Interference filters designed for the infrared light
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
  • Y10T428/24612—Composite web or sheet

Definitions

• the invention relates to a transparent substrate of mineral rigid material such as glass, this substrate comprising a main surface having a relief texture with a depth of at least 1 mm.
• Such substrates are used in architectural applications for interior and / or exterior decoration.
• the invention relates more particularly to the use of such substrates for manufacturing thermal insulation and / or sun protection glazings.
• glazings may be intended to equip buildings with a view in particular to reduce the air conditioning effort and / or to prevent excessive overheating (so-called “solar control” glazing) and / or to reduce the amount of energy dissipated to the earth. outside (so-called “low emissive” glazings) driven by the ever increasing importance of glazed surfaces in buildings.
• These windows can also be integrated in glazing with special features, such as heated windows or electrochromic windows.
• One type of thin film stack known to give substrates such properties consists of a functional metallic layer with infrared reflection properties and / or solar radiation, in particular a silver-based metallic functional layer. or metal alloy containing silver.
• the stacks of thin films with reflective properties in the infrared and / or in the solar radiation could not be deposited on textured surfaces and in particular on a main surface of a substrate having a relief texture of a depth of at least 1 mm or more.
• the present invention thus relates, in its broadest sense, to a glass substrate according to claim 1.
• This substrate comprises a main face having a raised texture with a depth of at least 1 mm and said main face is provided with a stack of thin layers with infrared reflection properties and / or solar radiation.
• a stack of thin films with infrared and / or solar radiation reflection properties has a total physical thickness of the order of 50 to 200 nm.
• the depth of the relief that is to say the distance between the highest point and the lowest point, is thus at least 5 times, and in general of the order 10 to 20 times, greater than the physical thickness of the stack.
• the substrate may be, before and / or after the deposition of the thin-film stack, transparent with a high visible light transmission (equal to or greater than 80%), or partially transparent with a medium-light transmittance ( between 20% and 80%), poorly transparent with a low light transmission in the visible range (between 5% and 20%), or even non-transparent, with a light transmission in the visible less than 5% (the light transmission in the visible as seen in this document, just as light reflection in the visible, is that measured as usually at 550 nm).
• the relief of the main face of the substrate preferably has a depth of between 1 and 15 mm including these values, especially between 2 and 12 mm including these values, or even between 3 and 10 mm including these values.
• at least 20% or even at least 50% of the reference surface of the main face is located in the same plane, this plane being preferably flat, but possibly being curved after the deposition of thin layers.
• At least 20%, or even at least 50% of the bottom surface (hollow or protruding) of the relief of the main face which is not the reference surface is preferably located in the same plane, this plane being preferably flat, but possibly being curved after the deposition of thin layers.
• the slope of the relief located between a reference surface of the main face and a bottom surface of the relief is preferably oriented by an angle ⁇ of between 90 ° and 120 °.
• a stack of thin films with reflection properties in the infrared and / or in the solar radiation generally has the following effect: to reduce the light transmission in the visible of the substrate on which it is deposited at least 10%; to increase the light reflection in the visible of the substrate on which it is deposited by at least 10%; to increase the energy reflection in the near infrared (solar control stack) or far (low-emissive stack) of the substrate on which it is deposited by at least 10%.
• the substrate according to the invention thus preferably has a visible light transmission of less than 80%, or even less than 60%, because the texture also contributes to the reduction of this light transmission; - A - a luminous reflection in the visible of at least 20%, or at least 30% or 50%, or even at least 80%, or even 90%; an infrared energy reflection of at least 10% or at least 20%, or at least 30% or 50%, or even at least 80%.
• anti-solar glazing for the building is given by the patents EP-0 511 901 and EP-O 678 483: they are functional layers in terms of the filtration of solar radiation which are nickel-chromium alloy , optionally nitrided, stainless steel or tantalum, and which are arranged between two layers of metal oxide dielectric such as SnO 2 , TiO 2 or Ta 2 O 5 .
• These windows are good sunscreen, with satisfactory mechanical and chemical durability, but are not really "bombable” or "hardenable” because the oxide layers surrounding the functional layer can prevent its oxidation during bending or quenching, the oxidation of the functional layer accompanied by a change in light transmission in the visible, and the overall appearance of the glazing as a whole.
• EP-O 536 607 uses metal nitride functional layers, of the TiN type or CrN, with protective layers of metal or silicon derivatives.
• EP-0 747 329 discloses functional nickel alloy NiCr layers associated with silicon nitride layers.
• functional layer is meant in this application the layer (s) of the stack which confers on the stack the bulk of its thermal properties, as opposed to the other layers, generally made of dielectric material, having as role of a chemical or mechanical protection of the functional layers, an optical role, a role of adhesion layer, etc.
• said stack of thin layers comprises at least one metallic functional layer based on stainless steel.
• said stack of thin layers comprises at least one nitrided functional layer, in particular based on silicon nitride or titanium nitride, as known in the international patent application No. WO 01/21540.
• said thin-film stack comprises at least one silver-containing metal or silver-containing metal functional layer, and two antireflection coatings, said coatings each comprising at least one dielectric layer, said functional layer being disposed between both antireflection coatings, the functional layer being optionally deposited directly on a sub-blocking coating disposed between the functional layer and the underlying antireflection coating and the functional layer being optionally deposited directly under an over-locking coating disposed between the layer functional and anti-reflective coating t overlying.
• This type of known stack to which the invention relates is called "stacking under and on blocker >> because it has in particular the following structure, in this order:
• the functional layer is thus disposed between two antireflection coatings each in general comprising a single layer which is made of a dielectric material of the silicon nitride type.
• the purpose of these coatings which frame the functional metal layer is "anti-reflective" this functional metal layer.
• a blocking coating is however interposed between each antireflection coating and the functional metal layer.
• the blocking coating disposed under the functional layer in the direction of the substrate promotes the crystalline growth of this layer and protects it during a possible heat treatment at high temperature, such as bending and / or quenching.
• the blocking coating disposed on the functional layer opposite the substrate protects this layer from possible degradation during the deposition of the upper antireflection coating and during a possible heat treatment at high temperature, of the bending and / or quenching type.
• the face of the substrate which is opposite to the main face also has a relief texture with a depth of at least 1 mm, this opposite face possibly being provided with a stack of thin layers to reflection properties in the infrared and / or in solar radiation and / or anti-reflective property.
• the present invention is more specifically a stack of the type of those presented above which is resistant to bending heat treatment and / or quenching applied to the glass substrates to allow them to be beaded and / or tempered.
• the substrates coated with this type of stack can not therefore be used as such by the end user (when packaging the substrates to form glazings for example), but only after having undergone heat treatment;
• a "quenching" stack may have a variation in visible light transmission at a heat treatment as low as a “quenchable” stack. but have, for example, a greater variation in light reflection in the visible or a greater variation in color.
• the invention thus applies to so-called "hardenable" substrates insofar as it is difficult to distinguish on the same building facade, for example, presenting close to one another on the one hand glazing integrating substrates according to the invention with a thin film stack and which have been quenched after the deposition of the layers and secondly substrates according to the invention with the same stack of thin but unhardened layers, by a simple overall visual observation glazings integrating in particular the light transmission in the visible, the reflection color and the light reflection in the visible glazing.
• each blocking coating based on nickel, has a thickness of less than 0.7 nanometer.
• the document EP 646 551 thus indirectly recommends, for making a stack of the same type but which supports the heat treatment, that the underblocking coating is really thicker (preferably 2 to 4 times the thickness of the overblocking coating ) and it states in particular that it is preferable that this sub-blocking coating has a thickness greater than 2 nm and advises a thickness of about 4.5 nm.
• glass substrate used herein refers to any type of substrate usually used in the glass industry for the production of glazing and thus covers all glass substrates, whatever their thickness, and all the polymer substrates, whatever either their thickness (and especially all the usual plastics, polycarbonate PC, polyvinyl butyral PVB, polyethylene terephthalate PET, ...)
• the glazing according to the invention incorporates at least the carrier substrate of the stack according to the invention, optionally associated with at least one other substrate.
• Each substrate can be clear or colored.
• At least one of the substrates may be colored glass in the mass or on the surface. The choice of the type of coloration will depend on the level of light transmission and / or the colorimetric appearance sought for the glazing once its manufacture is complete.
• at least the carrier substrate of the stack mounted in monolithic or multiple glazing type double glazing or laminated glazing, at least the carrier substrate of the stack can be curved and / or tempered, the heat treatment can be operated either before or after the deposit stacking thin layers.
• the glazing according to the invention may thus have a laminated structure, in particular associating at least two rigid substrates of the glass type with at least one sheet of thermoplastic polymer, in order to present a structure of glass type / stack of thin layers / sheet (s). /glass.
• the polymer may especially be based on polyvinyl butyral PVB, ethylene vinyl acetate EVA, PET polyethylene terephthalate, PVC polyvinyl chloride.
• the glazing may also have a so-called asymmetrical laminated glazing structure, combining a rigid glass-type substrate with at least one polyurethane-type polymer sheet with energy absorber properties, optionally combined with another polymer layer with properties " self-healing >>.
• asymmetrical laminated glazing structure combining a rigid glass-type substrate with at least one polyurethane-type polymer sheet with energy absorber properties, optionally combined with another polymer layer with properties " self-healing >>.
• the glazing can then have a glass-like structure / stack of thin layers / sheet (s) of polymer.
• the stack of thin layers is then protected from any degradation by this polymer sheet.
• this sheet makes it possible to compensate for surface variations at the periphery of the glazing for easier integration in a frame having a substrate receiving surface that is smooth.
• the glazings according to the invention are capable of undergoing heat treatment without damage for the stack of thin layers. They are therefore optionally curved and / or tempered.
• the glazing may be curved and / or tempered by being constituted by a single substrate, the one provided with the stack. It is then a glazing said
• the stack of thin layers is preferably on an at least partially non-planar face.
• the glazing may also be a multiple glazing, in particular a double glazing, at least the carrier substrate of the stack being curved and / or tempered. It is preferable in a multiple glazing configuration that the stack is disposed so as to be turned towards the interleaved gas blade side. In a laminated structure, the carrier substrate of the stack may be in contact with the polymer sheet.
• the carrier substrate of the stack may be curved or tempered glass, this substrate can be curved or tempered before or after the deposition of the stack.
• the invention also relates to the process for manufacturing the substrates according to the invention, which consists in depositing the stack of thin layers on its substrate by a vacuum technique of the cathode sputtering type possibly assisted by magnetic field.
• the first layer (s) of the stack may be deposited by another technique, for example by a pyrolysis type thermal decomposition technique.
• the invention further relates to a method of manufacturing a glass substrate according to the invention comprising a main face having a relief texture with a depth of at least 1 mm. This method is remarkable in that said main face is provided with a stack of thin layers with reflection properties in the infrared and / or in the solar radiation.
• Said stack of thin layers can be deposited after the formation of the embossed texture, in particular by a vacuum deposition technique, in particular by magnetron sputtering.
• the formation of the relief texture can also be performed after the deposition of said stack of thin layers, especially when the formation of the relief texture is performed at high temperature and is completed by bending and / or quenching of the substrate.
• the invention furthermore relates to the use of a thin film stack with infrared reflection properties and / or solar radiation on a main surface of a glass substrate for producing a substrate according to the invention whose main face having a relief texture of a depth of at least 1 mm or to produce a glazing according to the invention.
• the stack of thin layers is preferably an architectural thin-film stack, in particular a stack of thin layers for "hardening" or "soaking” architectural glazing, and in particular a stack of solar control including "hardenable" or "soaking".
• the depth of the patterns appears to be increased by 20 to 50%, when two textured substrates are compared, one without stacking of thin layers and the other according to the invention with a stack of layers. thin on the textured side.
• FIG. 1 schematically illustrates a rolling method in which rolling rolls are used, which furthermore serve texturing means, within the meaning of the present invention
• FIG. 2 illustrates a textured substrate according to the invention prior to the deposition of the stack of thin layers
• FIG. 3 illustrates a substrate according to the invention coated with a functional monolayer stack based on stainless steel
• FIG. 4 illustrates a substrate according to the invention coated with a functional monolayer stack based on silver, the functional layer being provided with a sub-blocking coating and an over-blocking coating and the stack being additionally provided with an optional protective coating.
• the method conventionally used for the production of large textured glass substrates consists of a rolling process, the principle of which is illustrated in FIG. 1, in which the molten glass 1, drawn on a refractory 2 according to the double arrow, is formed by passing through metal rollers 3 and 4.
• the glass has a temperature of about 1200 0 C before forming and about 850 0 C output of the rolling machine.
• a conventional technique consists in using a roll, such as for example the roll 3, which is not smooth on its surface but presenting on its surface the negative of the pattern or of the texturing that one wishes to obtain on the substrate.
• These texturing techniques are in particular known in the field of decorated glass or in the field of photovoltaic devices, for example in the European patent application No. EP 1774372.
• the rollers may have an etching on the upper face and / or In a well-known manner, the glass is then stretched and sent to a lehr.
• texturing patterns are constituted for example by a set of reliefs or excrescences, for example of prismatic shape, present on the surface of the roller and parallel to each other.
• the reliefs typically make it possible to obtain, on the main face of the substrate, a texturing which has a repetition of the pattern of the roll in positive.
• thermoform simply by gravity on a textured shape.
• the texturing of the substrate according to the invention can thus be carried out by rolling ("cast” in English), thermoforming, etching, in particular laser etching for a polymeric material.
• the manufacturing method according to the invention thus consists of a glass substrate 10, illustrated in FIG. 2, comprising a main face having a relief texture with a depth p of at least 1 mm, to provide said main face with a thin film stack 100 with infrared reflection properties and / or solar radiation to obtain a substrate illustrated in FIG. 3 or 4.
• Either the stack of thin layers 100 is deposited after the formation of the relief texture, in particular by a vacuum deposition technique, in particular by magnetron sputtering, or the formation of the embossed texture is carried out after the deposition of said stack of thin films 100 at high temperature and is optionally completed by bending and / or quenching of the substrate.
• the substrate 10 illustrated in FIG. 2 has a relief texture with a depth p of between 1 and 15 mm, in particular between 2 and 12 mm. This depth corresponds to the distance measured between a reference surface 12 of the main face and the bottom surface 14 of the relief of the main face, which is the furthest away from the main surface.
• the reference surface 12 is here the furthest surface of this opposite face, whereas the bottom surface 14 is the closest surface to the opposite face 18 because that the relief is considered hollow.
• the slope of the relief located between a reference surface 12 of the main face and a bottom surface 14 of the relief is oriented by an angle ⁇ of between 90 ° and 120 °.
• Texturing provided by the patterns on one side of the substrate can also be added, on the other side (opposite side, 18, a texturing provided by a roughness of the opposite side or by a rough layer.
• This rough layer may for example be a conductive transparent layer based on metal oxide (s), said surface or said layer having an RMS roughness of at least 3 nm, especially from minus 5nm and / or an average size of the patterns of this roughness of at least 50nm.
• the R.M.S roughness means roughness "Root Mean Square”. This is a measure of measuring the value of the mean square deviation of roughness. This roughness R.M.S, concretely, thus quantifies the average height of the roughness peaks, compared to an average height.
• An example 1 was made in which the stack of thin layers 100 comprises a metallic functional layer 80 of stainless steel coated with a protective layer 90 made of titanium nitride.
• the light transmission in the visible is of the order of 1%
• the light reflection on the side of the main face is of the order of 40%
• the light reflection on the side of the opposite face 18 is of the order of 50 %.
• the light transmission in the visible of this example 1 is very small, but it is however sufficient for the intended applications, especially for decorating applications.
• An example 2 was made in which the stack of thin layers 100 comprises a metal functional layer 40 based on silver, and two antireflection coatings 20, 60, said coatings each comprising at least one dielectric layer 24, 64, said layer the functional layer 40 being disposed directly on a sub-blocking coating 30 disposed between the functional layer 40 and the underlying antireflection coating (20) and the functional layer 40 being disposed between the two anti-reflection coatings 20, 60; deposited directly under an overblocking coating 50 disposed between the functional layer 40 and the overlying antireflection coating 60.
• Table 1 illustrates the physical thicknesses (and not the optical thicknesses) in nanometers of each of the layers of Example 2:
• T LWS light transmission T L in visible in%, measured according to illuminant D65: 64%
• the stack of Example 2 is a quenchable stack in the sense of the invention since the variation in light transmission in the visible ⁇ T Lv , s of the coated substrate is lower 5.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Surface Treatment Of Glass (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2008
  • 2008-02-29 FR FR0851321A patent/FR2928147B1/fr not_active Expired - Fee Related
• 2009
  • 2009-02-27 EP EP09721046A patent/EP2252556A2/de not_active Withdrawn
  • 2009-02-27 WO PCT/FR2009/050323 patent/WO2009112780A2/fr active Application Filing
  • 2009-02-27 US US12/918,892 patent/US8840982B2/en not_active Expired - Fee Related
  • 2009-02-27 KR KR1020107019052A patent/KR20100125267A/ko not_active Application Discontinuation
  • 2009-02-27 CN CN200980106859.8A patent/CN101959821B/zh not_active Expired - Fee Related

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