Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B1/00—Layered products having a non-planar shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
  • B23K26/36—Removing material
  • B23K26/362—Laser etching
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
  • B23K26/36—Removing material
  • B23K26/40—Removing material taking account of the properties of the material involved
  • B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
  • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
  • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
  • B32B17/10192—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions patterned in the form of columns or grids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
  • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K2101/00—Articles made by soldering, welding or cutting
  • B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K2103/00—Materials to be soldered, welded or cut
  • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
  • B23K2103/54—Glass
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • 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
  • C03C2218/00—Methods for coating glass
  • C03C2218/30—Aspects of methods for coating glass not covered above
  • C03C2218/32—After-treatment
  • C03C2218/328—Partly or completely removing a coating

Definitions

• the invention relates to a method for producing a partially decoated curved pane, such a partially decoated curved pane, a method for manufacturing a partially decoated curved composite pane, such a partially decoated curved composite pane and the use of such a pane or composite pane.
• Vehicles, airplanes, helicopters and ships are often equipped with various sensors or camera systems.
• Examples are camera systems such as video cameras, night vision cameras, residual light intensifiers, laser range finders or passive infrared detectors.
• Vehicle identification systems are also increasingly being used, for example, for collecting tolls.
• the transparent, electrically conductive coatings have in common is that they are also impermeable to electromagnetic radiation in the high-frequency range. If a vehicle is fully glazed on all sides with transparent, electrically conductive coatings, it is no longer possible to send and receive electromagnetic radiation in the interior.
• the functioning of many sensors, navigation, telecommunications or radio devices is significantly impaired as a result.
• the functioning of the camera system is also significantly impaired by the layer, since the signal strength of the transmitted light is reduced to such an extent by reflection on the layer that not enough light is transmitted through the layer overall, particularly when driving at night. In order to solve these problems, it is usually necessary to remove the coating from the pane at least over part of the surface.
• WO 2010/081589 A1 discloses transparent, planar antennas for the transmission and reception of electromagnetic waves, comprising at least one transparent, electrically insulating substrate, which has an electrically insulating, peripheral edge region on its surface, a transparent, electrically conductive coating that covers the surface of the substrate is covered over a large area except for the edge area and is formed by at least two flat segments that contain or consist of at least one electrically conductive material and are insulated from one another by at least one linear, electrically insulating area and at least one connection for galvanic, capacitive or inductive decoupling of the antenna signal from at least one flat segment.
• the antennas can be planar or more or less bent or curved in one direction or in several directions of space.
• WO 2015/091016 A1 discloses a pane with an electrically conductive coating and that decoated structures can be introduced into the electrically conductive coating by laser structuring, by mechanical removal or by chemical or physical etching. Structures from which the coating has been removed can be introduced into the electrically conductive coating by laser structuring before or after the pane is bent.
• EP 3 034 295 A1 discloses a composite pane with a functional coating, at least comprising a first pane with a surface III, a second pane with a surface II and a thermoplastic intermediate layer, the surface III of the first pane being connected to the surface II of the first pane by the thermoplastic intermediate layer second pane, at least one functional coating that is applied to at least part of the inner surface III of the first pane and at least one coating-free area that completely surrounds an inner area of the functional coating and the inner area of at least one outer one Area of the functional coating separates.
• the uncoated area can be created by a laser beam, a grinding wheel, or any other suitable tool.
• the laminated pane can have an uncoated zone serving as a communication, sensor or camera window.
• Communication windows are preferably arranged in inconspicuous positions on the pane, for example in the area of the interior mirror of a windshield, and are covered by black prints and plastic screens.
• the local removal of the coating of a pane to produce a curved pane that has been decoated in some areas can take place before or after the bending process.
• Decoating areas of a flat disc before bending has the advantage that a mechanical grinding process can be used that can be carried out at high speed and at low cost. Such a method is particularly suitable for decoating relatively large areas. However, such a method has the disadvantage that it affects the subsequent bending process and can lead to a significant deterioration in the optical quality of the end product.
• the heat input into the pane in the coated areas differs from the heat input in the uncoated areas of a pane.
• the reflective layer in coated areas influences the heat input into the glass compared to uncoated areas.
• a temperature gradient occurs at the dividing line between coated and uncoated areas.
• a coating increases the bending resistance and thus has an influence on the radii of curvature when bending. Due to the influence of decoating before bending on the optical quality of the end product, decoating areas of a flat pane before bending is not suitable for optically sensitive areas of the end product, i.e. the curved pane with decoating in areas.
• the area-wise decoating of a curved pane can be done by means of laser ablation.
• Such a laser process enables precise decoating of individual areas of a coated curved pane and has no influence on the optical quality of the end product.
• decoating an area using laser ablation is more time-consuming than decoating an area of the same size using mechanical abrasion. In the case of a pane that has been decoated in some areas, it can be seen whether the decoating was carried out in one area by means of mechanical abrasion or by means of a laser ablation process.
• the object of the present invention is to provide such a method.
• the method according to the invention is used to produce a curved pane that has been decoated in some areas and comprises at least the following method steps in the order given: a) providing a flat base pane with a first surface and a second surface, with a transparent coating being arranged over the entire surface of the first surface, b ) removing the transparent coating in at least a first partial area by means of mechanical abrasion, c) bending the flat base pane to form a curved base pane, d) removing the transparent coating in at least a second partial area by means of laser ablation.
• the curved pane from which the coating has been removed in some areas has a first surface, a second surface, an upper pane edge and a lower pane edge and two lateral pane edges.
• the upper edge of the pane designates that side edge of the pane which is intended to point upwards in the installed position.
• the side edge that is intended to point downwards in the installation position is referred to as the lower edge of the pane.
• the planar base has a first surface, a second surface, and a peripheral edge extending therebetween.
• the coating is removed in at least a first partial area by means of mechanical abrasion.
• the coating can be removed, for example, in exactly one first partial area.
• the coating is preferably removed in two or more first sub-areas, with the two or more first sub-areas being spatially separated from one another, ie the first sub-areas do not overlap when looking through the pane perpendicularly.
• the coating is removed in at least a second partial area by means of laser ablation.
• the coating can be removed, for example, in exactly one second partial area.
• the coating can also be removed in two or more second partial areas, the two or more second partial areas being spatially separated from one another, i.e. the second partial areas do not overlap one another when looking through the pane perpendicularly.
• the at least one second sub-area is spatially separated from the at least one first sub-area, i.e. when looking through the pane perpendicularly, the at least one first sub-area and the at least one second sub-area do not overlap.
• the at least one first partial area and the at least one second partial area can be arranged directly adjacent to one another, so that no coated areas are arranged between individual sections of the at least one first partial area and individual sections of the at least one second partial area.
• the areas in which the tool for abrasive decoating of the at least one first partial area is guided can partially overlap with the areas in which a laser is guided for decoating the at least one second partial area.
• This overlap is due to the tolerances of the abrasive stripping tool and the laser.
• the partial overlap ensures that, if desired, no coated areas are arranged between individual sections of the at least one first partial area and individual sections of the at least one second partial area.
• the transparent coating is for electromagnetic radiation, preferably electromagnetic radiation with a wavelength of 300 to 1300 nm, in particular for visible light, transmits but is reduced compared to clear glass.
• Transparent means that the overall transmission of the pane with the transparent coating corresponds to the legal provisions for windshields and front side windows and is preferably >70% and in particular >75% permeable for visible light. For rear side windows and rear windows, “transparent” can also mean 10% to 70% light transmission.
• step b) by means of mechanical abrasion.
• the decoating by means of mechanical abrasion can be carried out, for example, by means of a grinding wheel, a rough roller, by means of sandblasting or a cutter.
• the decoating in step b) is preferably carried out in the at least one first area by means of a grinding wheel or a rough roller.
• a carbon dioxide, YAG, Nd-YAG, ytterbium-YAG laser, holmium-YAG laser, erbium-YAG laser, neodymium Glass lasers, - excimer lasers, - fiber lasers, - disk lasers, - slab lasers or diode lasers can be used.
• the laser is preferably guided on the curved base plate at a speed of 0.100 m/s to 10 m/s.
• the laser preferably has a power of 1 W to 10 kW.
• the transparent coating is an electrically conductive coating.
• the metal oxide preferably contains zinc oxide, tin oxide, indium oxide, titanium oxide, silica, alumina, or the like, and combinations of one or more thereof.
• the dielectric material may also include silicon nitride, silicon carbide, or aluminum nitride.
• This layered structure is generally obtained by a sequence of deposition operations carried out by a vacuum process such as magnetic field assisted sputtering.
• Very fine metal layers which in particular contain titanium or niobium, can also be provided on both sides of the silver layer.
• the lower metal layer serves as an adhesion and crystallization layer.
• the upper metal layer serves as a protective and getter layer to prevent the silver from changing during further processing steps.
• Particularly suitable transparent, electrically conductive coatings contain at least one metal, preferably silver, nickel, chromium, niobium, tin, titanium, copper, palladium, zinc, gold, cadmium, aluminum, silicon, tungsten or alloys thereof, and/or at least one metal oxide layer , preferably tin-doped indium oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO, SnO2:F), antimony-doped tin oxide (ATO, SnO2:Sb), and/or carbon nanotubes and/or optically transparent ones, electrically conductive polymers, preferably poly(3,4-ethylenedioxythiophene), polystyrene sulfonate, poly(4,4-dioctylcyclopentadithiophene), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, mixtures and/or cop
• the thickness of the transparent, electrically conductive coating can vary widely and be adapted to the requirements of the individual case. What is essential here is that the thickness of the transparent, electrically conductive coating must not be so great that it becomes impermeable to electromagnetic radiation, preferably electromagnetic radiation with a wavelength of 300 to 1300 nm and in particular visible light.
• the transparent, electrically conductive coating preferably has a layer thickness of 10 nm to 5 ⁇ m (microns) and particularly preferably of 30 nm to 1 ⁇ m.
• the at least one first partial area and/or the at least one second partial area is arranged near the lower edge of the pane of the curved pane from which the coating has been removed in some areas. If a sub-area is arranged close to the lower edge of the pane, this means that the sub-area is arranged at most 50 cm, preferably at most 30 cm, from the lower edge of the pane.
• the at least one first partial area and the at least one second partial area can be arranged, for example, in the lower third of the curved pane from which the coating has been removed in certain areas.
• the curved pane from which the coating has been removed in some areas has a camera window and one or more sensor windows
• the at least one first partial area is arranged outside of the camera window and outside of a surrounding area that surrounds the camera window like a frame and has a width of at least 30 mm
• the camera window is also arranged completely in one of the at least one second partial area when looking through the pane perpendicularly.
• at least one of the sensor windows overlaps at least partially with the area surrounding the camera window when looking through the pane perpendicularly.
• This at least one sensor window which with the Surrounding area of the camera window is also arranged completely in one of the at least one second partial area when viewed perpendicularly through the pane.
• the flat base pane is only decoated in areas that, when viewed through the pane, are completely outside the area that is the camera window in the end product, and also completely outside of the area surrounding the camera window, at least 30 mm wide surrounding area.
• a second sub-area of the curved pane, which includes the camera window, and a further second sub-area of the curved pane, which includes the sensor window and which overlaps with the area surrounding the camera window, are stripped in this embodiment by means of laser ablation.
• the outer dimensions of these stripped second partial areas are preferably slightly larger than the camera window or the sensor window. In this context, slightly larger means 1 to 3 mm larger on all sides, preferably 2 to 3 mm larger.
• a second partial area can be arranged directly at the edges of a first partial area, at least in sections.
• Such a second partial area is preferably linear with a width of 1 to 3 mm, particularly preferably 2 to 3 mm.
• These second sub-areas avoid unclean boundary edges of the first sub-areas from which the coating has been removed, and a clean, sharp boundary edge of the coating is achieved in the second sub-areas by laser ablation.
• the arrangement of a second partial area directly on an edge section of a first partial area is particularly preferred in areas of the partially decoated curved pane which are visible to an observer in the installed position of the pane and are therefore not completely covered by an opaque masking print, for example.
• a curved laminated pane that has been decoated in some areas and is produced by a method according to the invention can additionally include a masking print, in particular made of a dark, preferably black, enamel.
• the masking print is in particular a peripheral, i.e. frame-like, masking print.
• the peripheral masking print primarily serves as UV protection for the assembly adhesive of the laminated pane.
• the cover print can be opaque and full-surface.
• the cover print can also be semi-transparent, at least in sections, for example as a dot grid, stripe grid or checkered grid.
• the covering print can also have a gradient, for example from an opaque covering to a semi-transparent covering.
• Typical radii of curvature for the partially decoated curved laminated pane are therefore also in the range of about 10 cm to about 40 m.
• Fig. 5 shows a cross section through a curved base pane 5, which has been decoated in a first area 4,
• Fig. 6 shows a cross section through a curved pane 1 according to the invention that has been partially decoated
• FIG. 12 shows a cross section through the curved composite pane 10 shown in FIG.
• FIG. 13 shows a cross section through a further embodiment of a curved laminated pane 10 according to the invention that has been decoated in some areas
• Fig. 1 shows a flowchart of an embodiment of a method according to the invention for producing a partially decoated curved pane 1 with a first surface 1.1, a second surface 1.2, an upper pane edge O, a lower pane edge U and two lateral pane edges S.
• a flat base pane 2 is provided with a first surface 2.1 and a second surface 2.2 and a peripheral edge running in between, with a transparent coating 3 being arranged over the entire surface on the first surface 2.1.
• the coating 3 is removed in at least a first partial area 4 by means of mechanical abrasion.
• the flat base pane 2 is bent to form a curved base pane 5.
• the flat base pane 2 shown in FIG. 4 differs from that shown in FIGS. 2 and 3 only in that the transparent coating 3 was removed in a first partial area 4 by means of mechanical abrasion.
• FIG. 5 shows a cross section through a curved base pane 5, which has been decoated in a first partial area 4, as is the case after the third step S3 of the method according to the invention for producing a curved pane 1 that has been decoated in some areas.
• FIG. 6 shows a cross section through a curved pane 1 from which the coating has been removed in some areas, as it is present after the fourth step S4 of the method according to the invention for producing a curved pane 1 from which the coating has been removed in some areas.
• FIG. 6 differs from the curved base pane 5 shown in FIG. 5 only in that the transparent coating 3 was removed in a second partial area 6 by means of laser ablation.
• the cross section shown in FIG. 6 corresponds to the cross section through the curved pane 1 shown in FIG.
• the method comprises the provision of a curved pane 1 from which the coating has been removed in some areas, produced according to the method shown in FIG. 1, at least one thermoplastic intermediate layer 11 and a further curved pane 12.
• FIG. 10 shows a plan view of an embodiment of a curved laminated pane 10 according to the invention from which the coating has been removed in some areas, produced according to the method according to the invention shown in FIG. 9, and FIG. 11 shows an enlargement of section Z from FIG. X is in Fig. 12 shown.
• the curved laminated pane 10 from which the coating has been removed in some areas has an upper pane edge O, a lower pane edge U and two lateral side edges S.
• the curved laminated pane 10 from which the coating has been removed in some areas has a first sub-area 4 which is arranged directly adjacent to a section of the upper pane edge O, and a second sub-area 6 .
• the first partial area 4 is surrounded by a dashed line and the second partial area 6 by a dotted line.
• a masking print 13 made of an opaque black enamel is applied to the surface of the further curved pane 12 facing the thermoplastic intermediate layer 11 .
• the masking print 13 is shown in gray in FIGS. 10 and 11.
• the covering print 13 is designed as a peripheral covering print and has a greater width in an area starting from the upper pane edge O than in areas different therefrom.
• the masking print 13 is semi-transparent in sections as a dot grid.
• the curved laminated pane 10 shown in FIGS. 10, 11 and 12 has a camera window 7 and the covering print has a recess 14 in the area of the camera window 7.
• the outer dimensions of the recess 14 in the area of the camera window 7 correspond to the outer dimensions of the camera window 7.
• the first partial area 4 is arranged directly adjacent to the upper edge of the pane O and is enlarged in two sections in the direction of the center of the pane.
• Fig. 15 shows a cross section through another embodiment of a curved pane 1 according to the invention with partially decoated areas.
• the embodiment shown in cross section in Fig pane 1 from which the coating has been removed is not connected to another curved pane 12 via a thermoplastic intermediate layer 3 .
• FIG. 18 shows an enlargement of a section of a top view of a further embodiment of a curved part according to the invention which has been decoated in some areas Laminated pane 10.
• the embodiment shown in FIG. 18 differs from that shown in FIG. 17 only in that the curved laminated pane 10, which has been stripped of coating in some areas, has a sensor window 9 for a rain sensor, which when viewed perpendicularly through the laminated pane 10 is partially within a 30 mm wide the camera window 7 surrounding area 8 is arranged.
• this sensor window 9 is arranged completely in a second partial region 6 in which the coating 3 was removed from the bent base pane after bending by means of laser ablation.
• the sensor window 9 is arranged completely within a further recess 14 in the covering print 13 in a vertical view through the laminated pane 10 .
• curved laminated panes 10 with a partially decoated layer can also be constructed with a partially decoated curved pane 1, with the difference that these do not have a thermoplastic intermediate layer 11 and no further curved pane 12 have and the masking print is arranged on the second surface 1.2 of the partially decoated curved pane 1.
• FIG. 19 shows an enlargement of a section of a top view of a further embodiment of a curved pane 1 according to the invention with areas of the coating removed.
• the embodiment shown in FIG. 19 differs from that shown in FIG. 8 only in that the curved pane 1 partially decoated has three second subregions 6 in which the coating 3 is applied by laser ablation after bending the curved base pane was removed.
• the pane 1 also has a second partial area 6 directly adjacent to sections of the edges of the first partial area 4, in which the coating is removed from the curved base pane by means of laser ablation after bending became.
• These two further second partial areas 6 are essentially linear with a width of 2 mm, for example, and form a sharp boundary edge of the coating 3.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Plasma & Fusion (AREA)
• Surface Treatment Of Glass (AREA)
• Joining Of Glass To Other Materials (AREA)

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Family Applications (1)

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Citations (11)

• 2023
  • 2023-02-14 WO PCT/EP2023/053558 patent/WO2023161070A1/de active Application Filing
  • 2023-02-14 CN CN202380008497.9A patent/CN116963905A/zh active Pending

Patent Citations (11)

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