DE202021100791U1 - Disc with black print and functional coating - Google Patents

Abstract

Disc (10) with black print (5) and functional coating (2), at least comprising
- A glass pane (1) with a first surface (1.1), a second surface (1.2) and a circumferential side edge (S),
- A frame-like black print (5) adjoining the circumferential side edge (S) on the first surface (1.1) of the glass pane (1)
- A functional coating (2) arranged on the first surface (1.1) of the glass pane (1) and in some areas on the black print (5).

Description

The present invention relates to a pane with a black print and a functional coating and a composite pane comprising such a pane.

Glazing in buildings and vehicles is increasingly being provided with large, electrically conductive layers that are transparent to visible light and that have to fulfill certain functions. These layers are commonly referred to as functional layers. For example, for reasons of energy saving and comfort, high demands are placed on glazing with regard to its heat-insulating properties. It is therefore desirable to avoid a high level of heat input through solar radiation, which leads to excessive heating of the interior and in turn results in high energy costs for the necessary air conditioning.

The use of sun protection coatings and the use of layers reflecting thermal radiation (low-E layers) are known. A low-E layer reflects a considerable part of the incident solar radiation, especially in the infrared range, which leads to less heating of the interior in summer. The low-E layer also reduces the emission of long-wave thermal radiation from a heated pane into the interior space if the low-E layer is applied to the surface of a pane facing the interior space. In winter, when the outside temperature is low, the heat from the interior is prevented from being radiated to the outside environment.

Another application of functional layers is aimed at keeping the field of vision of a vehicle window free from ice and mist. Electrical heating layers are known which, by applying an electrical voltage, cause targeted heating of the vehicle window or partial areas of the vehicle window (see e.g. WO 2010/043598 A1 ).

Functional coatings can be used to incorporate functions into a pane. However, metal-based coatings, for example, must be arranged inside a laminate and must not extend to the edge of the pane in order to avoid corrosion due to moisture. In addition, functional coatings often have the disadvantage that they are not transparent to electromagnetic radiation such as GPS signals or telecommunication signals. In order to ensure their transmission, the functional coatings must be equipped with a so-called communication window or data transmission window. These are designed, for example, as a pattern of coating-free lines which are generated in the coating by means of laser radiation. The generation of the communication window, however, represents a further, relatively complex process step which complicates the manufacture of the pane and thus makes it more cost-intensive. A pattern of areas in which a functional coating has been applied and areas in which it has been removed can also have negative effects on the appearance of the pane.

The function can also only be desired in a partial area of the pane. For example, a heating function can only be desired in the area of a windshield in which the windshield wipers are in the rest position.

The present invention is based on the object of providing an improved pane with a functional coating applied in areas which is easy to manufacture. In particular, the production should manage without the step of laser processing the coating.

The object of the present invention is achieved according to the invention by a pane with black printing and functional coating according to claim 1 and a laminated glass pane according to claim 3. Preferred embodiments emerge from the subclaims.

The invention relates to a pane with black print and functional coating at least comprising a glass pane with a first surface, a second surface and a circumferential side edge, a frame-like black print adjoining the circumferential side edge on the first surface of the glass pane and a region-wise arranged on the first surface of the glass pane Functional coating.

The functional coating is in particular a heatable coating, a sun protection coating or a coating that reflects thermal radiation.

A sun protection coating preferably comprises at least one electrically conductive layer based on a metal, in particular based on silver. Such a sun protection coating in particular has reflective properties in the near infrared range, for example in the range from 800 nm to 1500 nm.

A sun protection coating has the task of filtering out portions of solar radiation, especially in the infrared range. A sun protection coating preferably comprises at least one thin transparent metallic layer which is embedded between at least one dielectric layer. Silver has established itself as the preferred metal for the metallic layer, since it has a relatively neutral color effect and also selectively reflects infrared radiation outside the visible range of solar radiation. The dielectric layers have the task of improving the optical properties of the coated pane via their refractive indices and of protecting the metallic functional layer from oxidation. Such sun protection layers, which can be produced, for example, using the reactive sputtering method, are used to a large extent in glazing for buildings, but also in motor vehicles. In most cases, layer systems with two silver functional layers, but also three or four silver functional layers, are used because their efficiency, ie the reflection of the infrared radiation outside the visible range in relation to the transmission of the visible radiation, is greater.

Sun protection coatings are for example from the WO2013 / 104439A1 as well as the DE 19927683C1 known.

Coatings that reduce emissivity can also be referred to as coatings that reflect thermal radiation, coatings of low emissivity or LowE coatings (low emissivity). Such coatings are, for example, from WO2013 / 131667A1 known. Emissivity is the measure that indicates how much heat radiation the pane emits into an interior compared to an ideal heat radiator (a black body) in the installed position. The function of the emissivity-reducing coating is to avoid the radiation of heat into the interior (IR components of the solar radiation and in particular the thermal radiation of the pane itself) and also to prevent heat from being radiated out of the interior. It has reflective properties in relation to infrared radiation, in particular in relation to thermal radiation in the spectral range of 5 µm - 50 µm (see also standard DIN EN 12898: 2019-06). This effectively improves the thermal comfort in the interior. At high outside temperatures and solar radiation, the emissivity-reducing coating can particularly effectively reflect the thermal radiation emitted by the entire pane in the direction of the interior, at least partially. At low outside temperatures, the emissivity-reducing coating can effectively reflect the heat radiation emitted from the interior and thus reduce the effect of the cold pane as a heat sink. The emissivity-reducing coating preferably contains at least one electrically conductive layer based on a transparent conductive oxide, which provides reflective properties with respect to thermal radiation. The layer based on the transparent conductive oxide is also referred to below as the TCO layer. TCO layers are corrosion resistant and can be used on exposed surfaces. The TCO layer is preferably formed on the basis of indium tin oxide (ITO, indium tin oxide), but can, for example, alternatively be based on indium-zinc mixed oxide (IZO), aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide ( GZO), fluorine-doped tin oxide (FTO, SnO ₂ : F) or antimony-doped tin oxide (ATO, SnO ₂ : Sb).

In addition to the at least one electrically conductive layer, the sun protection coating or the emissivity-reducing coating usually has dielectric layers which, for example, are intended to increase light transmission as anti-reflective layers, as adaptation layers to improve the crystallinity of the electrically conductive layer, as smoothing layers to improve the surface structure for the layers above or as blocker or barrier layers to prevent diffusion processes during temperature treatments. Usual materials for the dielectric layers include silicon nitride, titanium oxide, aluminum nitride, tin oxide, zinc oxide, tin-zinc mixed oxide and silicon oxide.

The functional coating can, for example, also be an electrically heatable layer through which the pane is provided with a heating function. Such heatable layers are known per se to the person skilled in the art. They typically contain one or more, for example two, three or four, electrically conductive layers. These layers contain or consist preferably of at least one metal, for example silver, gold, copper, nickel and / or chromium, or a metal alloy and preferably contain at least 90% by weight of the metal, in particular at least 99.9% by weight of the metal. Such layers have a particularly advantageous electrical conductivity with a simultaneous high transmission in the visible spectral range.

The functional coating is preferably a transparent functional coating.

A coating is considered transparent in the sense of the invention if it has an average transmission in the visible spectral range of at least 70%, preferably at least 75% and thus does not significantly restrict the view through the glazing.

In one embodiment, areas in which the functional coating is arranged on the glass pane and areas in which no functional coating is arranged on the glass pane, a pattern.

The black print preferably contains at least one pigment and glass frit. It can contain other chemical compounds. The glass frits can be melted or melted and the cover print can be permanently connected to the glass surface (fused or sintered). The pigment provides the opacity of the black print. Such cover prints are typically applied as enamel.

The printing ink from which black printing is formed contains at least the pigment and the glass frits, suspended in a liquid phase (solvent), for example water or organic solvents such as alcohols. The pigment is typically a black pigment such as carbon black, aniline black, leg black, iron oxide black, spinel black, and / or graphite.

The black print is preferably designed like a frame and serves primarily as UV protection for the assembly adhesive of the windshield. The frame-like black print is often significantly enlarged in the area of sensors in the direction of the center of the pane.

In an advantageous embodiment, the glass pane contains or consists of non-toughened, partially toughened or toughened glass, preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass.

The thickness of the glass pane can vary widely and be adapted to the requirements of the individual case. For example, a washer with a standard thickness of 1.0 mm to 25 mm is used. For example, the thickness is from 0.5 mm to 15 mm, in particular from 1 mm to 5 mm. The size of the glass pane can vary widely and depends on the use.

The glass pane can have any three-dimensional shape. The glass pane is preferably planar or slightly or strongly curved in one direction or in several directions of the room.

The glass pane can be colorless or colored.

The invention also relates to a laminated glass pane comprising a first pane and a second pane connected to the first pane via a thermoplastic intermediate layer, the first pane and / or the second pane being a pane according to the invention.

In one embodiment, the first pane and the second pane are arranged in relation to one another in the laminated glass pane in such a way that the first surface of the pane with black print and functional layer is arranged on the inside, i.e. in the direction of the thermoplastic intermediate layer.

In another embodiment of the laminated glass pane, in one embodiment, the first pane and the second pane are arranged relative to one another in such a way that the first surface of the pane with black print and functional layer represents the inside, i.e. the side facing the vehicle interior.

The thermoplastic intermediate layer contains or consists of at least one thermoplastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), thermoplastic polyurethane (PU) or mixtures or copolymers or derivatives thereof, particularly preferably polyvinyl butyral (PVB), very particularly preferably polyvinyl butyral (PVB) and additives known to those skilled in the art, such as plasticizers, for example.

• P1.1 Bereitstellung einer Glasscheibe mit ersten Oberfläche, einer zweiten Oberfläche und einer umlaufenden Seitenkante und Auftragen eines randständigen rahmenartigen Schwarzdrucks auf die erste Oberfläche der Glasscheibe,
• P1.2 Auftragen einer Funktionsbeschichtung auf den Schwarzdruck und auf die restliche erste Oberfläche der Glasscheibe,
• P1.3 Auftragen einer reaktiven Schicht auf mindestens einen Bereich der Funktionsbeschichtung,
• P1.4 Erhitzen der Glasscheibe, wodurch die Funktionsbeschichtung mit der reaktiven Schicht zu einer Reaktionsproduktschicht umgesetzt wird,
• P1.5 Abwaschen der Reaktionsproduktschicht von der Glasscheibe.

A pane according to the invention can be produced, for example, using the following method:

• P1.1 Provision of a glass pane with a first surface, a second surface and a circumferential side edge and application of a border-like, frame-like black print on the first surface of the glass pane,
• P1.2 Application of a functional coating on the black print and on the remaining first surface of the glass pane,
• P1.3 Application of a reactive layer to at least one area of the functional coating,
• P1.4 heating of the glass pane, whereby the functional coating is converted with the reactive layer into a reaction product layer,
• P1.5 Washing the reaction product layer from the glass pane.

In step P1.3, the reactive layer is preferably applied in a partial area of the area in which the black print is arranged. This ensures a uniform appearance in the transparent area of the pane, i.e. the area in which there is no black print.

Step P1.4 can take place, for example, during the burning, bending or tempering of the glass pane.

The reactive layer is preferably a mineral layer which contains at least one phosphate.

In one embodiment, in the pane produced by this method, areas in which the functional coating is arranged on the edge of the glass pane provided with a black print, and areas in which no functional coating is arranged, form a pattern.

• P2.1 Bereitstellung einer Glasscheibe mit einer ersten Oberfläche, einer zweiten Oberfläche und einer umlaufenden Seitenkante und Auftragen einer Funktionsbeschichtung auf die erste Oberfläche der Glasscheibe,
• P2.2 Auftragen einer reaktiven Schicht auf mindestens einen Bereich der Funktionsbeschichtung,
• P2.3 Erhitzen der Glasscheibe, wodurch die Funktionsbeschichtung mit der reaktiven Schicht zu einer Reaktionsproduktschicht umgesetzt wird,
• P2.4 Abwaschen der Reaktionsproduktschicht von der Glasscheibe.

A pane with a functional coating can also be manufactured using the following process, for example:

• P2.1 Provision of a glass pane with a first surface, a second surface and a circumferential side edge and application of a functional coating to the first surface of the glass pane,
• P2.2 applying a reactive layer to at least one area of the functional coating,
• P2.3 heating of the glass pane, as a result of which the functional coating is converted with the reactive layer into a reaction product layer,
• P2.4 Wash the reaction product layer from the glass sheet.

The reactive layer is preferably a mineral layer which contains at least one phosphate.

Step P2.3 can take place, for example, during the burning, bending or tempering of the glass pane.

In one embodiment, in the pane produced by this method, the areas in which the functional coating is arranged on the first surface of the glass pane and areas in which no functional coating is arranged on the first surface of the glass pane form a pattern.

If the reactive layer is applied to the area of the functional coating that lies in the area of a camera window, there are fewer optical distortions in the area of the camera window than in the case of a pane in which the functional coating was mechanically removed before heating in the area of the camera window.

• P3.1 Bereitstellung einer Glasscheibe mit einer ersten Oberfläche, einer zweiten Oberfläche und einer umlaufenden Seitenkante und Auftragen einer Opferschicht in mindestens einem Bereich auf der ersten Oberfläche der Glasscheibe,
• P3.2 Auftragen einer Funktionsbeschichtung auf die Opferschicht und auf die restliche erste Oberfläche der Glasscheibe,
• P3.3 Erhitzen der Glasscheibe, wodurch die Opferschicht zu einer zerstörten Opferschicht umgesetzt wird,
• P3.4 Abwaschen der zerstörten Opferschicht zusammen mit darauf angeordneter Funktionsbeschichtung von der Glasscheibe.

Alternatively, a pane with a functional coating can also be manufactured using the following process, for example:

• P3.1 Provision of a glass pane with a first surface, a second surface and a circumferential side edge and application of a sacrificial layer in at least one area on the first surface of the glass pane,
• P3.2 Application of a functional coating on the sacrificial layer and on the remaining first surface of the glass pane,
• P3.3 heating of the glass pane, as a result of which the sacrificial layer is converted into a destroyed sacrificial layer,
• P3.4 Washing of the destroyed sacrificial layer together with the functional coating arranged on it from the glass pane.

Step P3.3 can take place, for example, during the burning, bending or tempering of the glass pane.

In one embodiment, in the pane produced by this method, areas in which the functional coating is arranged on the first surface of the glass pane and areas in which no functional coating is arranged on the first surface of the glass pane form a pattern.

The sacrificial layer preferably contains or consists of an organic material. The sacrificial layer particularly preferably contains or consists of a polymer material, in particular a light- or thermosetting polymer material. The sacrificial layer is preferably designed in the form of a light- or thermosetting polymer layer. In the case of a light-curing polymer material, the sacrificial layer is irradiated with light after it has been applied to the glass pane in order to cure the sacrificial layer. In the case of a thermosetting polymer material, the sacrificial layer is treated with heat after it has been applied to the glass pane in order to cure the sacrificial layer. Such sacrificial layers made of organic materials, in particular made of a light- or thermosetting polymer material, can be destroyed and removed particularly well by heating. The sacrificial layer is particularly advantageously destroyed during a heat treatment of the glass pane, in particular during a heat treatment for bending the glass pane.

According to a preferred embodiment, the sacrificial layer contains or consists of at least one (meth) acrylate compound. The term “(meth) acrylate” refers to an acrylate or a methacrylate. The term “(meth) acrylate compound” preferably means esters of acrylic acid or methacrylic acid, the compound at least one acryloyl group (CH ₂ = CH— CO-) or one methacryloyl group (CH ₂ = CH (CH ₃ )) —CO—) contains. Such an ester can be a monomer, Be oligomer, prepolymer or polymer. (Meth) acrylate compounds preferably produce a polymer network with a solid structure when they are polymerized.

(Meth) acrylate compounds enable the sacrificial layer to be burned quickly and completely in a particularly advantageous manner, preferably during a heat treatment of the glass pane, and produce residual substances that can be easily removed during the decomposition.

The invention is explained in more detail below with reference to drawings and exemplary embodiments. The drawings are schematic representations and are not true to scale. The drawings do not limit the invention in any way.

• 1 eine Draufsicht auf eine Windschutzscheibe,
• 2 eine Draufsicht auf eine Ausgestaltung einer erfindungsgemäßen Scheibe 10,
• 3 ein Flussdiagramm eines Verfahrens zur Herstellung einer erfindungsgemäßen Scheibe 10,
• 4 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P1.1 des in 3 gezeigten Verfahrens,
• 5 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P1.2 des in 3 gezeigten Verfahrens,
• 6 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P1.3 des in 3 gezeigten Verfahrens,
• 7 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P1.4 des in 3 gezeigten Verfahrens,
• 8 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P1.5 des in 3 gezeigten Verfahrens,
• 9 ein Flussdiagramm eines Verfahrens zur Herstellung einer Scheibe mit einer bereichsweise angeordneten Funktionsbeschichtung.,
• 10 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P2.1 des in 9 gezeigten Verfahrens,
• 11 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P2.2 des in 9 gezeigten Verfahrens,
• 12 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P2.3 des in 9 gezeigten Verfahrens,
• 13 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P2.4 des in 9 gezeigten Verfahrens,
• 14 ein Flussdiagramm eines weiteren Verfahrens zur Herstellung einer Scheibe mit einer bereichsweise angeordneten Funktionsbeschichtung,
• 15 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P3.1 des in 14 gezeigten Verfahrens,
• 16 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P3.2 des in 14 gezeigten Verfahrens,
• 17 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P3.3 des in 14 gezeigten Verfahrens,
• 18 einen Ausschnitt eines Querschnitts durch die Glasscheibe 1 nach Prozessschritt P3.4 des in 14 gezeigten Verfahrens,

Show it:

• 1 a top view of a windshield,
• 2 a plan view of an embodiment of a disc according to the invention 10 ,
• 3 a flow chart of a method for producing a disk according to the invention 10 ,
• 4th a section of a cross section through the glass pane 1 after process step P1.1 of the in 3 procedure shown,
• 5 a section of a cross section through the glass pane 1 after process step P1.2 of the in 3 procedure shown,
• 6th a section of a cross section through the glass pane 1 after process step P1.3 of the in 3 procedure shown,
• 7th a section of a cross section through the glass pane 1 after process step P1.4 of the in 3 procedure shown,
• 8th a section of a cross section through the glass pane 1 after process step P1.5 of the in 3 procedure shown,
• 9 a flowchart of a method for producing a pane with a functional coating arranged in regions.,
• 10 a section of a cross section through the glass pane 1 after process step P2.1 of the in 9 procedure shown,
• 11 a section of a cross section through the glass pane 1 after process step P2.2 of the in 9 procedure shown,
• 12th a section of a cross section through the glass pane 1 after process step P2.3 of the in 9 procedure shown,
• 13th a section of a cross section through the glass pane 1 after process step P2.4 of the in 9 procedure shown,
• 14th a flowchart of a further method for producing a pane with a functional coating arranged in areas,
• 15th a section of a cross section through the glass pane 1 after process step P3.1 of the in 14th procedure shown,
• 16 a section of a cross section through the glass pane 1 after process step P3.2 of the in 14th procedure shown,
• 17th a section of a cross section through the glass pane 1 after process step P3.3 of the in 14th procedure shown,
• 18th a section of a cross section through the glass pane 1 after process step P3.4 of the in 14th procedure shown,

In the 1 is shown a top view of a windshield. The windshield has a top and a bottom and a circumferential side edge. In the in the 1 Different areas of the windshield shown in the top view are marked by dashed lines and provided with reference numerals. The area running between the encircling dashed line and the encircling side edge is labeled with the reference symbol A. Mistake. It is the one with the reference number A. around a circumferential edge area. The one above in the middle and with the reference number B. The designated area is the area of the windshield in which sensor windows, in particular a camera window, are usually arranged. The one with the reference number C. designated area is the area in the vicinity of the lower edge of the windshield, in which the windshield wipers are usually arranged in their rest position. It is advantageous if functional layers introduced into the windshield are removed, at least in some areas, independently of one another in one or more of the areas labeled A, B and C.

In the 2 Figure 3 is a plan view of an embodiment of a washer according to the invention 10 shown. The disc 10 includes a pane of glass 1 with a first surface, a second surface and a circumferential side edge S. . On the first surface of the glass panel 1 is a marginal, frame-like cover print (in the 2 not shown) and a functional coating 2 applied, the functional coating 2 over the entire surface minus the areas marked in black in the area C. is applied. As from the 2 can be seen, form the areas in which on the pane of glass 1 the functional coating 2 arranged is, and the areas where on the glass panel 1 no functional coating 2 arranged is a pattern.

3 shows a flow diagram of a method for producing a pane according to the invention 10 with black print 5 and functional coating 2 .

In process step P1.1, a pane of glass is made 1 with a first surface 1.1 , a second surface ( 1.2 ) and a circumferential side edge S. provided and on the first surface ( 1.1 ) a frame-like black print in a marginal area 5 applied.

In process step P1.2, the black print 5 and on the rest of the first surface 1.1 the pane of glass 1 a functional coating 2 applied.

In process step P1.3 a reactive layer is created 3 on at least one area of the functional coating 2 applied.

In process step P1.4, the glass pane obtained from process step P1.3 becomes 1 heated thereby the functional coating 2 with the reactive layer 3 to a reaction product layer 4th is implemented.

In process step P1.5, the reaction product layer becomes 4th from the pane of glass 1 washed off and a washer 1 , on their first surface 1.1 a black print in some areas 5 and a functional coating in some areas 2 is arranged, received.

4th shows a section of a cross section through the glass pane 1 after process step P1.1 of the in 3 procedure shown. The pane of glass 1 has a first surface 1.1 , a second surface 1.2 and a circumferential side edge S. on. The pane of glass 1 is made of soda-lime glass, for example, and is 2.1 mm thick. On the first surface 1.1 the glass pane1 is a frame-like black print at the edge 5 applied with a width of, for example, 30 mm.

5 shows a section of a cross section through the glass pane 1 after process step P1.2 of the in 3 procedure shown. The one in the 5 The pane of glass shown differs from that in the 4th shown only to the effect that on the black print 5 and on the rest of the first surface 1.1 the pane of glass 1 a functional coating 2 is applied. This is, for example, a coating that reflects thermal radiation.

6th shows a section of a cross section through the glass pane 1 after process step P1.3 of the in 3 procedure shown. The one in the 6th shown pane of glass 1 differs from that in the 5 shown only to the effect that in one on the circumferential side edge S. adjacent area, ie a reaction layer in an edge area 3 is applied. The marginal area in which the reaction layer 3 is applied, is for example 10 mm wide. The reaction layer 3 can alternatively also be applied to the functional layer in another area 2 be applied, but an arrangement in a portion of the area in which the black print 5 is arranged, is preferred.

7th shows a section of a cross section through the glass pane 1 after process step P1.4 of the in 3 procedure shown. The one in the 7th shown pane of glass 1 differs from that in the 6th shown only to the effect that in the marginal area in which the reaction layer 3 on the functional coating 2 was arranged, the reaction layer 3 and the functional coating 2 a reaction product layer 4th have formed.

8th shows a section of a cross section through the glass pane 1 after process step P2.5 of the in 3 procedure shown. The one in the 8th shown pane of glass 1 differs from that in the 7th shown only in that the reaction product layer 4th removed by washing. Thus, the pane of glass 1 no functional coating in the marginal area 2 on. It is an embodiment of a disk according to the invention 10 .

The one in the 8th shown disc 10 has a high frequency transmission (HF transmission) comparable to an uncoated pane.

9 shows a flow diagram of a method for producing a pane with a functional coating arranged in regions.

In process step P2.1, a pane of glass is made 1 with a first surface 1.1 , a second surface 1.2 and a circumferential side edge S. provided and on the first surface 1.1 a functional coating 2 applied.

In process step P2.2 a reactive layer is created 3 on at least one area of the functional coating 2 applied.

In process step P2.3, the glass pane obtained from process step P2.2 is used 1 heated thereby the functional coating 2 with the reactive layer 3 to a reaction product layer 4th is implemented.

In process step P2.4, the reaction product layer 4th from the pane of glass 1 washed off and a washer 1 , on their first surface 1.1 a functional layer in some areas 2 arranged is preserved.

10 shows a section of a cross section through the glass pane 1 after process step P2.1 of the in 9 procedure shown. The pane of glass 1 has a first surface 1.1 , a second surface 1.2 and a circumferential side edge S. on. The pane of glass 1 is made of soda-lime glass, for example, and is 2.1 mm thick. On the first surface 1.1 the glass pane has a functional coating 2 applied. This is, for example, a coating that reflects thermal radiation.

11 shows a section of a cross section through the glass pane 1 after process step P2.2 of the in 9 procedure shown. The one in the 11 shown pane of glass 1 differs from that in the 10 shown only to the effect that in one on the circumferential side edge S. adjacent area, ie a reaction layer in an edge area 3 is applied. The marginal area in which the reaction layer 3 is applied, is for example 10 mm wide.

12th shows a section of a cross section through the glass pane 1 after process step P2.3 of the in 9 procedure shown. The one in the 12th shown pane of glass 1 differs from that in the 11 shown only to the effect that in the marginal area in which the reaction layer 3 on the functional coating 2 was arranged, the reaction layer 3 and the functional coating 2 a reaction product layer 4th have formed.

13th shows a section of a cross section through the glass pane 1 after process step P2.4 of the in 9 procedure shown. The one in the 13th shown pane of glass 1 differs from that in the 12th shown only in that the reaction product layer 4th removed by washing. Thus, the pane of glass 1 no functional coating in the marginal area 2 on.

The one in the 18th The pane shown has a high frequency transmission (HF transmission) comparable to an uncoated pane.

14th shows a flow chart of a further method for producing a pane with a functional coating arranged in regions.

In process step P3.1, a pane of glass is made 1 with a first surface 1.1 , a second surface 1.2 and a circumferential side edge S. provided and on the first surface 1.1 a sacrificial layer in at least one area 6th applied.

In process step P3.2, the sacrificial layer is applied 6th and on the rest of the first surface 1.1 the pane of glass 1 a functional coating 2 applied.

In process step P3.3, the glass pane obtained from process step P3.2 is used 1 heated thereby the sacrificial layer 6th to a destroyed sacrificial layer 7th is implemented.

In process step P3.4, the sacrificed layer is destroyed 7th together with the functional coating arranged on it 2 from the pane of glass 1 washed off and a washer 1 , on the first surface of which a functional coating in some areas 2 arranged is preserved.

15th shows a section of a cross section through the glass pane 1 after process step P3.1 of the in 14th procedure shown. The pane of glass 1 has a first surface 1.1 , a second surface 1.2 and a circumferential side edge S. on. The pane of glass 1 is made of soda-lime glass, for example, and is 2.1 mm thick. On the first surface 1.1 the edge of the glass pane is a sacrificial layer 6th applied. The area in which the sacrificial layer 6th is applied is, for example, 15 mm wide.

16 shows a section of a cross section through the glass pane 1 after process step P3.2 of the in 14th procedure shown. The one in the 16 shown pane of glass 1 differs from that in the 15th shown only to the effect that on the sacrificial layer 6th and on the rest of the first surface 1.1 the pane of glass 1 a functional coating 2 is applied. This is, for example, a coating that reflects infrared radiation.

17th shows a section of a cross section through the glass pane 1 after process step P3.3 of the in 14th procedure shown. The one in the 17th shown pane of glass 1 differs from that in the 16 shown only in that the sacrificial layer 6th is destroyed and as a destroyed sacrificial layer 7th is present.

18th shows a section of a cross section through the glass pane 1 by process step P3.4 of the in 14th procedure shown. The one in the 18th shown pane of glass 1 differs from that in the 17th shown only to the effect that the destroyed sacrificial layer 7th together with the functional coating arranged on it 2 removed by washing. Thus, the pane of glass 1 no functional coating in the marginal area 2 on.

List of reference symbols

1

Pane of glass

1.1

first surface

1.2

second surface

2

Coating

3

reactive layer

4th

Reaction product layer

5

Black print

6th

Sacrificial layer

7th

destroyed sacrificial layer

10

disc

O

Top of the glass panel 1

U

Underside of the glass panel 1

S.

Side edge

A.

Edge area

B.

Sensor range

C.

Wiper area

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2010/043598 A1 [0004]
• WO 2013/104439 A1 [0013]
• DE 19927683 C1 [0013]
• WO 2013/131667 A1 [0014]

Claims (3)

Disc (10) with black print (5) and functional coating (2), at least comprising - A glass pane (1) with a first surface (1.1), a second surface (1.2) and a circumferential side edge (S), - A frame-like black print (5) adjoining the circumferential side edge (S) on the first surface (1.1) of the glass pane (1) - A functional coating (2) arranged on the first surface (1.1) of the glass pane (1) and in some areas on the black print (5). Disc (10) with black print and functional coating (2) Claim 1 , wherein the functional coating (2) is a heatable coating, a sun protection coating or a coating that reflects heat rays. Laminated glass pane comprising a first pane and a second pane connected to the first pane via a thermoplastic intermediate layer, the first pane and / or the second pane having a pane (10) behind Claim 1 or 2 is.

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