EP3154783A1 - Composite pane, composed of a polymeric pane and a glass pane - Google Patents

Composite pane, composed of a polymeric pane and a glass pane

Info

Publication number
EP3154783A1
EP3154783A1 EP15722496.5A EP15722496A EP3154783A1 EP 3154783 A1 EP3154783 A1 EP 3154783A1 EP 15722496 A EP15722496 A EP 15722496A EP 3154783 A1 EP3154783 A1 EP 3154783A1
Authority
EP
European Patent Office
Prior art keywords
pane
glass
polymeric
disc
composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15722496.5A
Other languages
German (de)
French (fr)
Inventor
Stefan UEBELACKER
Sandra SIENERTH
Dorothea KETTNER
Stephan Kremers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3154783A1 publication Critical patent/EP3154783A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B32B17/10018—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 only one glass sheet
    • 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
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
    • 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

Definitions

  • the invention relates to a composite disc of a polymeric disc and a glass sheet, a method for their preparation and the use of a thin glass sheet in such a composite disk.
  • the vehicle industry is currently trying to reduce the weight of vehicles, which is associated in particular with a reduced fuel consumption.
  • One factor which contributes significantly to the weight of the vehicles and therefore offers a significant potential for savings is the glazing.
  • Conventional vehicle glazing is realized using glass panes, usually as tempered safety glass (ESG) or as laminated safety glass (VSG).
  • ESG tempered safety glass
  • VSG laminated safety glass
  • Single-pane safety glass is understood as meaning a single pane of glass which is prestressed in order to influence the stability and the size of the fragments when the pane breaks.
  • Laminated safety glass is understood to mean a composite pane of two usually non-tempered glass panes, which are glued together by a thermoplastic intermediate layer.
  • plastic discs instead of glass panes.
  • plastic discs have some disadvantages compared to glass, in particular a significantly low scratch resistance, so that the replacement of essential parts of the vehicle glazing can not be realized by plastic discs so far.
  • the present invention has for its object to provide a further improved vehicle window, which has a low weight and at the same time a high stability and stone chip resistance, and a method for their preparation.
  • the object of the present invention is achieved by a composite pane for vehicles according to claim 1.
  • the composite pane according to the invention for vehicles comprises at least one polymeric pane (plastic pane) and a non-prestressed pane of glass bonded to the surface of the polymeric pane.
  • a non-prestressed glass pane in the sense of the invention is a glass pane that has undergone neither a thermal nor a chemical tempering process. Such non-tempered glass typically has surface pressure stresses less than 15 MPa.
  • the composite pane according to the invention is intended to separate the interior from the outside environment in a window opening of a vehicle.
  • the interior of the pane facing the laminated glass is referred to as an inner pane.
  • the outer environment facing disc is referred to as an outer pane.
  • the great advantage of the invention is the connection of a polymeric disk with a very thin non-tempered glass sheet. Due to the polymeric disc, which usually makes up the largest part of the thickness of the composite disc, the composite disc has a low weight. The disc can thereby advantageously contribute to a reduction of the total weight of the vehicle.
  • the glass is very thin and therefore only leads to a small increase in the weight of the disc. Nevertheless, the glass pane achieves high stability and, in particular, scratch resistance of the pane.
  • the glass also improves the acoustic properties of the disc, thus causing a reduction of the penetrating through the disc noise, which is often described as a disadvantage of plastic discs against glass panes.
  • the glass pane may be exposed to loads such as falling rocks.
  • a non-tempered glass sheet has a wider compressive stress zone and lower tensile stress in the interior and is thus less susceptible to impact of a pointed body than a tempered glass sheet.
  • a non-tempered thin glass sheet in combination with a polymeric disk thus results in increased stone chip resistance compared to tempered glass disks.
  • the glass sheet can be connected directly to the polymeric disk.
  • the glass sheet has a thickness of 0.3 mm to 1 mm. Slices of this thickness have only a low weight and yet cause high stability and scratch resistance.
  • the glass pane preferably has a thickness of 0.3 mm to 0.7 mm, more preferably of 0.35 to 0.55 mm. This results in particularly good results in terms of low weight and high stability and scratch resistance.
  • the polymeric disk preferably has a thickness of 1.5 mm to 10 mm, particularly preferably 2 mm to 5 mm and very particularly preferably 2 mm to 3 mm. With a polymeric disc of this thickness, the disc according to the invention has a sufficiently high stability to be used as a vehicle window.
  • the polymeric disc may contain, for example, at least polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP), polystyrene (PS), polybutadiene, polynitriles, polyesters, polyurethanes and / or polyacrylates.
  • the polymeric disc preferably contains at least polycarbonate (PC), polymethylmethacrylate (PMMA) or copolymers or mixtures or derivatives thereof, more preferably polycarbonate or derivatives thereof.
  • the polymeric disk and the glass sheet are laminated together in an advantageous embodiment of the invention via a thermoplastic intermediate layer.
  • the thermoplastic intermediate layer may contain, for example, at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or mixtures or copolymers or derivatives thereof.
  • the intermediate layer contains polyurethane or derivatives thereof. It has surprisingly been found that these materials are particularly suitable for the intermediate layer for laminating the composite pane. Compared to other thermoplastic materials, in particular for composite material PVB, polyurethane and derivatives cause less diffusion between the polymeric disk and the intermediate layer during the lamination process.
  • the thickness of the thermoplastic intermediate layer is preferably 0.2 mm to 1 mm, particularly preferably 0.3 mm to 0.9 mm, for example 0.38 mm, 0.72 mm, 0.76 mm or 0.81 mm.
  • the thermoplastic intermediate layer is formed by one or more thermoplastic films.
  • the thermoplastic intermediate layer has a noise-reducing effect. As a result, the transmission of noise into the vehicle interior can advantageously be further reduced. The vehicle occupants will be less disturbed by ambient noise and driving noise. Such an effect can be achieved by a multi-layered, for example three-layered intermediate layer, the inner layer having a higher plasticity or elasticity than the outer layers surrounding it, for example due to a higher proportion of plasticizers.
  • the polymeric disk and the glass sheet can be bonded together via an adhesive layer, for example via a chemically curing adhesive such as silicone adhesive.
  • a cold-stick adhesive has the advantage that the polymeric disc can be connected to the glass without heat. The saving of such a process step required in a lamination process saves costs and simplifies the production of the composite pane.
  • the glass pane is the outer pane of the composite pane. Since damaging effects, in particular from the external environment, strike vehicle windows, this arrangement is particularly advantageous for increasing the stability of the pane.
  • the surface of the polymeric pane remote from the glass pane is provided with a protective coating (so-called hardcoating).
  • the scratch resistance of the disc is further increased.
  • the protective coating preferably has a layer thickness of 1 ⁇ to 50 ⁇ , more preferably from 2 ⁇ to 25 ⁇ .
  • the surface of the polymeric pane which in a preferred variant faces the interior, can be protected against damage.
  • the surface of the polymeric pane remote from the (first) glass pane according to the invention is connected in a planar manner to a second glass pane.
  • the second glass pane has the same thickness as the first glass pane.
  • This symmetrical structure is advantageous in order to avoid additional external bending stresses due to the lamination.
  • the glass pane can basically have any chemical composition known to the person skilled in the art.
  • the glass pane can contain, for example, soda-lime glass, aluminosilicate glass or borosilicate glass or consist of these glasses.
  • the glass pane contains soda-lime glass. Soda soda glass is available at low cost and has proven itself for applications in the vehicle sector.
  • the glass pane contains borosilicate glass. This achieves particularly good results in tests on stone chipping with a pointed stone.
  • the glass sheet, the polymeric disk and / or the intermediate layer can be clear and colorless, but also tinted or colored.
  • the composite pane according to the invention can be flat. Tarp vehicle windows occur in particular in large-scale glazing of buses, trains or tractors. However, the composite pane according to the invention can also be bent slightly or strongly in one or more directions of the space. Curved panes occur, for example, in glazing in the automotive field, with typical radii of curvature in the range of about 10 cm to about 40 m.
  • the composite pane can have a functional coating, for example an IR-reflecting or absorbing coating, a UV-reflecting or absorbing coating, a coloring coating, a low-emissivity coating (so-called low-E coating), a heatable coating, a coating with an antenna function , a coating with a splinter-binding effect (splinter-binding coating) or a coating for shielding electromagnetic radiation, for example radar radiation.
  • the coating according to the invention is an electrically conductive coating.
  • a coating of low emissivity an IR-reflecting or a heatable coating can be realized.
  • the functional coating is preferably applied to a surface of the polymeric disk or to a carrier film within the intermediate layer.
  • the carrier film preferably contains at least polyethylene terephthalate (PET), polyethylene (PE) or mixtures or copolymers or derivatives thereof and preferably has a thickness of from 5 ⁇ m to 500 ⁇ m, particularly preferably from 10 ⁇ m to 200 ⁇ m. This is particularly advantageous for the handling, the stability and the optical properties of the carrier film.
  • the invention further comprises a method for producing a composite pane according to the invention, wherein
  • the polymeric disc is connected to the glass sheet surface.
  • the polymeric disk is preferably made by injection molding.
  • the glass sheet is preferably produced as flat glass and cut to the desired size and shape. If the composite pane to be produced has only one curvature in one direction, then the flat pane can, due to its small thickness, be bent directly upon connection to the polymeric pane. But especially in the automotive sector bends occur in several directions of the room in the rule. For this, the glass sheet is subjected to a bending process at elevated temperatures, for example at 500 ° C to 700 ° C. After bending, the disc is slowly cooled. Too fast cooling produces thermal stresses in the disk. The cooling rate is preferably until cooling to a temperature of 400 ° C, preferably from 0.5 ° C / sec to 1 ° C / sec. By such a slow cooling thermal stresses in the glass can be avoided, which lead in particular to optical defects. It can then be further cooled, even with higher cooling rates, because below 400 ° C the risk of generating thermal stresses is low.
  • the polymeric disk and the glass sheet are preferably bonded together by lamination via a thermoplastic intermediate layer.
  • the laminated glass is produced by lamination by methods known per se, for example autoclave methods, vacuum bag methods, vacuum ring methods, calendering methods, vacuum laminators or combinations thereof.
  • the connection of the glass pane and the polymeric pane usually takes place under the action of heat, vacuum and / or pressure.
  • the glass sheet and the polymeric disk can be bonded using an adhesive which chemically cures at room temperature. In this method, no deformation of the composite due to different thermal expansion coefficients of glass and polymer occurs.
  • the composite pane according to the invention is preferably used in means of transport for traffic on land, in the air or on water, in particular in trains, ships and motor vehicles, for example as windshield, roof window, rear window or side window.
  • the invention further includes the use of a non-tempered glass sheet with a thickness of 0.3 mm to 1 mm in a composite disk for increasing the stability and scratch resistance of a polymeric disk, preferably vehicle window, particularly preferably side window, rear window, windshield or roof window.
  • Fig. 1 shows a cross section through an embodiment of the invention
  • the composite pane shows a composite pane according to the invention, which consists of a polymeric pane 1 and a glass pane 2, which are laminated together via an intermediate layer 3.
  • the composite pane is provided, for example, as a side window of a motor vehicle, wherein the polymeric pane 1 is the inner pane in the installed position and the glass pane 2 is the outer pane.
  • the polymeric disc 1 is thus facing the interior of the motor vehicle and the glass pane 2 of the external environment.
  • the polymeric disc 1 is made of polycarbonate (PC) and has a thickness of, for example, 4 mm. Due to the polymeric disk 1, the composite disk has an advantageously low weight.
  • the glass sheet 2 is not biased and has a thickness of, for example, 0.5 mm.
  • the thin glass plate 2 only slightly increases the weight of the composite pane, but significantly improves the stability and scratch resistance as well as the acoustic properties.
  • the intermediate layer 3 is made of polyurethane (PU) with a thickness of 0.72 mm. In laminating the polyurethane interlayer and the polycarbonate disk, surprisingly, there is a decreased diffusion between interlayer 3 and polymeric disk 1 than with many other common thermoplastic materials, such as PVB.
  • Fig. 2 shows a further embodiment of the composite pane according to the invention.
  • the polymeric disk 1 is glued to a first glass sheet via a layer 7 of silicone adhesive.
  • the composite pane is provided, for example, as a roof panel of a motor vehicle, wherein the glass pane 2 is the outer pane.
  • a scratch-resistant coating is applied, which protects the polymeric disc from damage.
  • Fig. 3 shows a further embodiment of the composite pane according to the invention.
  • the polymeric pane 1 is connected to a first glass pane 2 via a first intermediate layer 3 and to a second glass pane 4 via a second intermediate layer 5.
  • a projectile with a diamond tip was dropped from an increasing height onto the laminated glass according to the invention (example) to simulate the impact of a sharp stone.
  • the height was measured at which the laminated glass broke.
  • When hitting the glass pane 2 was observed at a height of 1200 mm glass breakage.
  • This result for the inventive laminated glass with the non-tempered glass was surprisingly better than that for Comparative Example 1 with chemically toughened glass (broken glass from a height of 100 mm).
  • Comparative Example 2 a conventional thick-glass windshield, glass breakage was observed at 1100 mm. Accordingly, the disc according to the invention surprisingly has an even higher stone chip resistance than a conventional windshield.
  • the tests were performed on a 30cm x 30cm sample of the laminated glass to be tested.
  • a steel ball weighing 227 g was dropped onto the glass sheet 2 from a height of 8.5 m. This test simulates the impact of a stone on the outside of the laminated glass. The test was passed when the ball was stopped by the laminated glass. All three samples passed the test.
  • the laminated glass of the invention did not damage the polymeric disk. In particular, no fragmentation on the back (side of the polymeric disk 1) occurred, which is advantageous for the occupant.
  • a steel ball weighing 2260 g was dropped onto the inner pane 1 from a height of 4 m.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

The invention relates to a composite pane for vehicles, at least comprising: a polymeric pane (1), which has a thickness of between 1.5 to 10 mm, and a glass pane (2), which has a thickness of between 0.3 mm - 1 mm and which is connected to the polymeric pane (1) in a planar manner, wherein the polymeric pane (1) contains at least polycarbonate (PC) and/or polymethyl methacrylate (PMMA) and wherein the glass pane (2) is a non-toughened pane.

Description

Verbundscheibe aus einer polymeren Scheibe und einer Glasscheibe  Composite disc of a polymeric disk and a glass pane
Die Erfindung betrifft eine Verbundscheibe aus einer polymeren Scheibe und einer Glasscheibe, ein Verfahren zu deren Herstellung und die Verwendung einer dünnen Glasscheibe in einer solchen Verbundscheibe. The invention relates to a composite disc of a polymeric disc and a glass sheet, a method for their preparation and the use of a thin glass sheet in such a composite disk.
Die Fahrzeugindustrie ist aktuell bemüht, das Gewicht der Fahrzeuge zu reduzieren, was insbesondere mit einem reduzierten Treibstoffverbrauch einhergeht. Ein Faktor, welcher wesentlich zum Gewicht der Fahrzeuge beiträgt und daher ein signifikantes Einsparpotential bietet, ist die Verglasung. Herkömmliche Fahrzeugverglasungen werden durch Glasscheiben realisiert, üblicherweise als Einscheibensicherheitsglas (ESG) oder als Verbundsicherheitsglas (VSG). Unter Einscheibensicherheitsglas versteht man dabei eine einzelne Glasscheibe, welche vorgespannt ist, um die Stabilität und die Größe der Splitter beim Bruch der Scheibe zu beeinflussen. Unter Verbundsicherheitsglas versteht man eine Verbundscheibe aus zwei üblicherweise nicht vorgespannten Glasscheiben, die über eine thermoplastische Zwischenschicht miteinander verklebt sind. The vehicle industry is currently trying to reduce the weight of vehicles, which is associated in particular with a reduced fuel consumption. One factor which contributes significantly to the weight of the vehicles and therefore offers a significant potential for savings is the glazing. Conventional vehicle glazing is realized using glass panes, usually as tempered safety glass (ESG) or as laminated safety glass (VSG). Single-pane safety glass is understood as meaning a single pane of glass which is prestressed in order to influence the stability and the size of the fragments when the pane breaks. Laminated safety glass is understood to mean a composite pane of two usually non-tempered glass panes, which are glued together by a thermoplastic intermediate layer.
Ein Ansatz, das Gewicht der Fahrzeugverglasung zu reduzieren, ist der Einsatz von Kunststoffscheiben anstelle von Glasscheiben. Kunststoffscheiben weisen aber gegenüber Glasscheiben einige Nachteile auf, insbesondere eine deutlich geringe Kratzfestigkeit, so dass der Ersatz wesentlicher Teile der Fahrzeugverglasung durch Kunststoffscheiben bislang nicht realisiert werden kann. One approach to reducing the weight of vehicle glazing is to use plastic discs instead of glass panes. However, plastic discs have some disadvantages compared to glass, in particular a significantly low scratch resistance, so that the replacement of essential parts of the vehicle glazing can not be realized by plastic discs so far.
Zur Erhöhung der Kratzfestigkeit wird in DE4415878A1 vorgeschlagen, die Kunststoff- scheibe mit einer dünnen Glasscheibe mittels eines Silikonklebstoffs zu verbinden. To increase the scratch resistance, it is proposed in DE 4415878A1 to connect the plastic disk to a thin glass pane by means of a silicone adhesive.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine weiter verbesserte Fahrzeugscheibe bereitzustellen, welche ein geringes Gewicht und gleichzeitig eine hohe Stabilität und Steinschlagfestigkeit aufweist, sowie ein Verfahren zu deren Herstellung. The present invention has for its object to provide a further improved vehicle window, which has a low weight and at the same time a high stability and stone chip resistance, and a method for their preparation.
Die Aufgabe der vorliegenden Erfindung wird erfindungsgemäß durch eine Verbundscheibe für Fahrzeuge gemäß Anspruch 1 gelöst. Bevorzugte Ausführungen gehen aus den Unteransprüchen hervor. Die erfindungsgemäße Verbundscheibe für Fahrzeuge umfasst mindestens eine polymere Scheibe (Kunststoffscheibe) und eine mit der polymeren Scheibe flächig verbundene nichtvorgespannte Glasscheibe. Eine nicht-vorgespannte Glasscheibe im Sinne der Erfindung ist eine Glasscheibe, die weder einem thermischen noch einem chemischen Vorspannprozess unterzogen wurde. Eine solche nicht-vorgespannte Glasscheibe weist typischerweise Oberflächendruck- Spannungen kleiner als 15 MPa auf. The object of the present invention is achieved by a composite pane for vehicles according to claim 1. Preferred embodiments will become apparent from the dependent claims. The composite pane according to the invention for vehicles comprises at least one polymeric pane (plastic pane) and a non-prestressed pane of glass bonded to the surface of the polymeric pane. A non-prestressed glass pane in the sense of the invention is a glass pane that has undergone neither a thermal nor a chemical tempering process. Such non-tempered glass typically has surface pressure stresses less than 15 MPa.
Die erfindungsgemäße Verbundscheibe ist dafür vorgesehen, in einer Fensteröffnung eines Fahrzeugs den Innenraum gegenüber der äußeren Umgebung abzutrennen. Die dem Innenraum zugewandte Scheibe des Verbundglases wird dabei als Innenscheibe bezeichnet. Die der äußeren Umgebung zugewandte Scheibe wird als Außenscheibe bezeichnet. The composite pane according to the invention is intended to separate the interior from the outside environment in a window opening of a vehicle. The interior of the pane facing the laminated glass is referred to as an inner pane. The outer environment facing disc is referred to as an outer pane.
Der große Vorteil der Erfindung besteht in der Verbindung einer polymeren Scheibe mit einer sehr dünnen nicht-vorgespannten Glasscheibe. Durch die polymere Scheibe, welche in der Regel den größten Teil der Dicke der Verbundscheibe ausmacht, weist die Verbundscheibe ein geringes Gewicht auf. Die Scheibe kann dadurch vorteilhaft zu einer Verringerung des Gesamtgewichts des Fahrzeugs beitragen. Die Glasscheibe ist sehr dünn und führt daher nur zu einer geringen Erhöhung des Gewichts der Scheibe. Trotzdem wird durch die Glasscheibe eine hohe Stabilität und insbesondere Kratzfestigkeit der Scheibe erreicht. Die Glasscheibe verbessert zudem die akustischen Eigenschaften der Scheibe, bewirkt also eine Verringerung der durch die Scheibe hindurchdringenden Geräusche, was häufig als Nachteil von Kunststoffscheiben gegenüber Glasscheiben geschildert wird. Die Glasscheibe kann Belastungen wie Steinschlag ausgesetzt sein. Trifft ein Stein, insbesondere ein kleiner, spitzer Stein auf eine Glasscheibe, so kann er deren Oberfläche durchdringen. Im Falle einer vorgespannten Scheibe kann der Stein so in die Zugspannungszone im Scheibeninneren eindringen, was zu einem Zerspringen der Scheibe führt. Eine nicht-vorgespannte Glasscheibe weist eine breitere Druckspannungszone und geringere Zugspannung im Inneren auf und ist dadurch weniger anfällig gegenüber dem Einschlag eines spitzen Körpers als eine vorgespannte Glasscheibe. Eine nicht- vorgespannte dünne Glasscheibe in Kombination mit einer polymeren Scheibe führt somit zu einer erhöhten Steinschlagfestigkeit im Vergleich zu Scheiben mit vorgespanntem Glas. Die Glasscheibe kann direkt mit der polymeren Scheibe verbunden sein. The great advantage of the invention is the connection of a polymeric disk with a very thin non-tempered glass sheet. Due to the polymeric disc, which usually makes up the largest part of the thickness of the composite disc, the composite disc has a low weight. The disc can thereby advantageously contribute to a reduction of the total weight of the vehicle. The glass is very thin and therefore only leads to a small increase in the weight of the disc. Nevertheless, the glass pane achieves high stability and, in particular, scratch resistance of the pane. The glass also improves the acoustic properties of the disc, thus causing a reduction of the penetrating through the disc noise, which is often described as a disadvantage of plastic discs against glass panes. The glass pane may be exposed to loads such as falling rocks. If a stone hits a glass pane, especially a small, pointed stone, it can penetrate its surface. In the case of a prestressed disc, the stone can thus penetrate into the tensile stress zone in the interior of the disc, which leads to a shattering of the disc. A non-tempered glass sheet has a wider compressive stress zone and lower tensile stress in the interior and is thus less susceptible to impact of a pointed body than a tempered glass sheet. A non-tempered thin glass sheet in combination with a polymeric disk thus results in increased stone chip resistance compared to tempered glass disks. The glass sheet can be connected directly to the polymeric disk.
Die Glasscheibe weist eine Dicke von 0,3 mm bis 1 mm auf. Scheiben dieser Dicke haben nur ein geringes Gewicht und bewirken dennoch eine hohe Stabilität und Kratzfestigkeit. Die Glasscheibe weist bevorzugt eine Dicke von 0,3 mm bis 0,7 mm, besonders bevorzugt von 0,35 bis 0,55 mm auf. Damit werden besonders gute Ergebnisse im Hinblick auf ein geringes Gewicht und eine hohe Stabilität und Kratzfestigkeit erzielt. The glass sheet has a thickness of 0.3 mm to 1 mm. Slices of this thickness have only a low weight and yet cause high stability and scratch resistance. The glass pane preferably has a thickness of 0.3 mm to 0.7 mm, more preferably of 0.35 to 0.55 mm. This results in particularly good results in terms of low weight and high stability and scratch resistance.
Die polymere Scheibe weist bevorzugt eine Dicke von 1 ,5 mm bis 10 mm auf, besonders bevorzugt von 2 mm bis 5 mm und ganz besonders bevorzugt von 2 mm bis 3 mm. Mit einer polymeren Scheibe dieser Dicke weist die erfindungsgemäße Scheibe eine ausreichend hohe Stabilität auf, um als Fahrzeugscheibe verwendet zu werden. The polymeric disk preferably has a thickness of 1.5 mm to 10 mm, particularly preferably 2 mm to 5 mm and very particularly preferably 2 mm to 3 mm. With a polymeric disc of this thickness, the disc according to the invention has a sufficiently high stability to be used as a vehicle window.
Die polymere Scheibe kann beispielsweise zumindest Polycarbonat (PC), Polymethylmethacrylat (PMMA), Polyethylen (PE), Polypropylen (PP), Polystyrol (PS), Polybutadien, Polynitrile, Polyester, Polyurethane und/oder Polyacrylate enthalten. Die polymere Scheibe enthält bevorzugt zumindest Polycarbonat (PC), Polymethylmethacrylat (PMMA) oder Copolymere oder Gemische oder Derivate davon, besonders bevorzugt Polycarbonat oder Derivate davon. The polymeric disc may contain, for example, at least polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP), polystyrene (PS), polybutadiene, polynitriles, polyesters, polyurethanes and / or polyacrylates. The polymeric disc preferably contains at least polycarbonate (PC), polymethylmethacrylate (PMMA) or copolymers or mixtures or derivatives thereof, more preferably polycarbonate or derivatives thereof.
Die polymere Scheibe und die Glasscheibe sind in einer vorteilhaften Ausgestaltung der Erfindung über eine thermoplastische Zwischenschicht miteinander laminiert. Die thermoplastische Zwischenschicht kann beispielsweise zumindest Polyvinylbutyral (PVB), Ethylenvinylacetat (EVA), Polyurethan (PU) oder Gemische oder Copolymere oder Derivate davon enthalten. In einer bevorzugten Ausgestaltung enthält die Zwischenschicht Polyurethan oder Derivate davon. Es hat sich überraschend gezeigt, dass diese Materialien für die Zwischenschicht zum Laminieren der Verbundscheibe besonders geeignet sind. Im Vergleich zu anderen thermoplastischen Materialien, insbesondere zum für Verbundscheiben verbreiteten Material PVB, bewirken Polyurethan und Derivate während des Laminiervorgangs eine geringere Diffusion zwischen polymerer Scheibe und Zwischenschicht. Eine solche Diffusion kann insbesondere zu verschlechterten optischen Eigenschaften und verschlechterten Haftungseigenschaften führen, was für Fensterscheiben zu vermeiden ist. Die Dicke der thermoplastischen Zwischenschicht beträgt bevorzugt 0,2 mm bis 1 mm, besonders bevorzugt von 0,3 mm bis 0,9 mm, beispielsweise 0,38 mm, 0,72 mm, 0,76 mm oder 0,81 mm. Die thermoplastische Zwischenschicht wird durch eine einzelne oder durch mehrere thermoplastische Folien ausgebildet. In einer besonders vorteilhaften Ausgestaltung weist die thermoplastische Zwischenschicht eine geräuschmindernde Wirkung auf. Dadurch kann die Transmission von Geräuschen in den Fahrzeuginnenraum vorteilhaft weiter verringert werden. Die Fahrzeuginsassen werden dadurch weniger durch Umgebungsgeräusche und Fahrgeräusche gestört. Eine solche Wirkung kann durch eine mehrlagige, beispielsweise dreilagige Zwischenschicht erreicht werden, wobei die innere Lage eine höhere Plastizität oder Elastizität aufweist als die sie umgebenden äußeren Lagen, beispielsweise infolge eines höheren Anteils an Weich- machern. The polymeric disk and the glass sheet are laminated together in an advantageous embodiment of the invention via a thermoplastic intermediate layer. The thermoplastic intermediate layer may contain, for example, at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or mixtures or copolymers or derivatives thereof. In a preferred embodiment, the intermediate layer contains polyurethane or derivatives thereof. It has surprisingly been found that these materials are particularly suitable for the intermediate layer for laminating the composite pane. Compared to other thermoplastic materials, in particular for composite material PVB, polyurethane and derivatives cause less diffusion between the polymeric disk and the intermediate layer during the lamination process. In particular, such diffusion can lead to impaired optical properties and impaired adhesion properties, which is to be avoided for window panes. The thickness of the thermoplastic intermediate layer is preferably 0.2 mm to 1 mm, particularly preferably 0.3 mm to 0.9 mm, for example 0.38 mm, 0.72 mm, 0.76 mm or 0.81 mm. The thermoplastic intermediate layer is formed by one or more thermoplastic films. In a particularly advantageous embodiment, the thermoplastic intermediate layer has a noise-reducing effect. As a result, the transmission of noise into the vehicle interior can advantageously be further reduced. The vehicle occupants will be less disturbed by ambient noise and driving noise. Such an effect can be achieved by a multi-layered, for example three-layered intermediate layer, the inner layer having a higher plasticity or elasticity than the outer layers surrounding it, for example due to a higher proportion of plasticizers.
In einer alternativen vorteilhaften Ausgestaltung der Erfindung können die polymere Scheibe und die Glasscheibe über eine Klebeschicht miteinander verklebt werden, beispielsweise über einen chemisch härtenden Klebstoff wie Silikonklebstoff. Die Verwendung eines kalt zu verklebenden Klebstoffs hat den Vorteil, dass die polymere Scheibe mit der Glasscheibe ohne Hitzeeinwirkung verbunden werden kann. Die Einsparung eines solchen bei einem Laminationsverfahren notwendigen Prozessschritts spart Kosten und vereinfacht die Herstellung der Verbundscheibe. In einer bevorzugten Ausgestaltung der Erfindung ist die Glasscheibe die Außenscheibe der Verbundscheibe. Da beschädigende Einwirkungen insbesondere von der äußeren Umgebung auf Fahrzeugscheiben treffen, ist diese Anordnung besonders vorteilhaft zur Stabilitätssteigerung der Scheibe. In einer vorteilhaften Weiterbildung der Erfindung ist die von der Glasscheibe abgewandte Oberfläche der polymeren Scheibe mit einer Schutzbeschichtung (sogenanntes Hardcoating) versehen. Dadurch wird die Kratzfestigkeit der Scheibe weiter erhöht. Bevorzugt werden thermisch härtende oder UV-härtende Lacksysteme auf Basis von Polysiloxanen, Polyacrylaten, Polymethacrylaten und/oder Polyurethanen verwendet. Die Schutzbeschichtung hat bevorzugt eine Schichtdicke von 1 μηη bis 50 μηη, besonders bevorzugt von 2 μηη bis 25 μηη. Mithilfe einer solchen Kratzfestbeschichtung kann die Oberfläche der polymeren Scheibe, die in einer bevorzugten Variante dem Innenraum zugewandt ist, vor Beschädigungen geschützt werden. Die von der erfindungsgemäßen (ersten) Glasscheibe abgewandte Oberfläche der polymeren Scheibe ist in einer Ausgestaltung der Erfindung mit einer zweiten Glasscheibe flächig verbunden. Beide Oberflächen der polymeren Scheibe sind dabei also mit jeweils einer erfindungsgemäßen Glasscheibe verbunden. So werden beide Oberflächen der polymeren Scheibe vor Beschädigungen geschützt. In einer bevorzugten Ausführungsform weist die zweite Glasscheibe die gleiche Dicke auf wie die erste Glasscheibe. Dieser symmetrische Aufbau ist vorteilhaft um zusätzliche äußere Biegespannungen durch das Laminieren zu vermeiden. Die Glasscheibe kann grundsätzlich jede dem Fachmann bekannte chemische Zusammensetzung aufweisen. Die Glasscheibe kann beispielweise Kalk-Natron-Glas, Aluminosilikatglas oder Borsilikatglas enthalten oder aus diesen Gläsern bestehen. In einer bevorzugten Ausgestaltung der Erfindung enthält die Glasscheibe Kalk-Natron-Glas. Kalk- Natron-Glas ist kostengünstig verfügbar und hat sich für Anwendungen im Fahrzeugbereich bewährt. In einer alternativen bevorzugten Ausführungsform enthält die Glasscheibe Borsilikatglas. Hiermit werden besonders gute Ergebnisse in Tests zu Steinschlag mit spitzem Stein erzielt. In an alternative advantageous embodiment of the invention, the polymeric disk and the glass sheet can be bonded together via an adhesive layer, for example via a chemically curing adhesive such as silicone adhesive. The use of a cold-stick adhesive has the advantage that the polymeric disc can be connected to the glass without heat. The saving of such a process step required in a lamination process saves costs and simplifies the production of the composite pane. In a preferred embodiment of the invention, the glass pane is the outer pane of the composite pane. Since damaging effects, in particular from the external environment, strike vehicle windows, this arrangement is particularly advantageous for increasing the stability of the pane. In an advantageous development of the invention, the surface of the polymeric pane remote from the glass pane is provided with a protective coating (so-called hardcoating). As a result, the scratch resistance of the disc is further increased. Preference is given to using thermosetting or UV-curing coating systems based on polysiloxanes, polyacrylates, polymethacrylates and / or polyurethanes. The protective coating preferably has a layer thickness of 1 μηη to 50 μηη, more preferably from 2 μηη to 25 μηη. With the aid of such a scratch-resistant coating, the surface of the polymeric pane, which in a preferred variant faces the interior, can be protected against damage. In a refinement of the invention, the surface of the polymeric pane remote from the (first) glass pane according to the invention is connected in a planar manner to a second glass pane. Both surfaces of the polymeric disc are thus connected to a respective glass sheet according to the invention. Thus, both surfaces of the polymeric disc are protected from damage. In a preferred embodiment, the second glass pane has the same thickness as the first glass pane. This symmetrical structure is advantageous in order to avoid additional external bending stresses due to the lamination. The glass pane can basically have any chemical composition known to the person skilled in the art. The glass pane can contain, for example, soda-lime glass, aluminosilicate glass or borosilicate glass or consist of these glasses. In a preferred embodiment of the invention, the glass pane contains soda-lime glass. Soda soda glass is available at low cost and has proven itself for applications in the vehicle sector. In an alternative preferred embodiment, the glass pane contains borosilicate glass. This achieves particularly good results in tests on stone chipping with a pointed stone.
Die Glasscheibe, die polymere Scheibe und/oder die Zwischenschicht können klar und farblos, aber auch getönt oder gefärbt sein. The glass sheet, the polymeric disk and / or the intermediate layer can be clear and colorless, but also tinted or colored.
Die erfindungsgemäße Verbundscheibe kann plan sein. Plane Fahrzeugscheiben treten insbesondere in großflächigen Verglasungen von Bussen, Zügen oder Traktoren auf. Die erfindungsgemäße Verbundscheibe kann aber auch leicht oder stark in einer oder in mehreren Richtungen des Raumes gebogen sein. Gebogene Scheiben treten beispielsweise bei Verglasungen im Kraftfahrzeugbereich auf, wobei typische Krümmungsradien im Bereich von etwa 10 cm bis etwa 40 m liegen. The composite pane according to the invention can be flat. Tarp vehicle windows occur in particular in large-scale glazing of buses, trains or tractors. However, the composite pane according to the invention can also be bent slightly or strongly in one or more directions of the space. Curved panes occur, for example, in glazing in the automotive field, with typical radii of curvature in the range of about 10 cm to about 40 m.
Die Verbundscheibe kann eine funktionelle Beschichtung aufweisen, beispielsweise eine IR- reflektierende oder absorbierende Beschichtung, eine UV-reflektierende oder absorbierende Beschichtung, eine farbgebende Beschichtung, eine Beschichtung niedriger Emissivität (sogenannte Low-E-Beschichtung), eine heizbare Beschichtung, eine Beschichtung mit Antennenfunktion, eine Beschichtung mit splitterbindender Wirkung (splitterbindende Beschichtung) oder eine Beschichtung zur Abschirmung von elektromagnetischer Strahlung, beispielsweise Radarstrahlung. In einer bevorzugten Ausgestaltung ist die erfindungsgemäße Beschichtung eine elektrisch leitfähige Beschichtung. Dadurch kann insbesondere eine Beschichtung niedriger Emissivität, eine IR-reflektierende oder eine beheizbare Beschichtung realisiert werden. The composite pane can have a functional coating, for example an IR-reflecting or absorbing coating, a UV-reflecting or absorbing coating, a coloring coating, a low-emissivity coating (so-called low-E coating), a heatable coating, a coating with an antenna function , a coating with a splinter-binding effect (splinter-binding coating) or a coating for shielding electromagnetic radiation, for example radar radiation. In a preferred embodiment, the coating according to the invention is an electrically conductive coating. As a result, in particular a coating of low emissivity, an IR-reflecting or a heatable coating can be realized.
Die funktionelle Beschichtung ist bevorzugt auf einer Oberfläche der polymeren Scheibe oder auf einer Trägerfolie innerhalb der Zwischenschicht aufgebracht. Die Trägerfolie enthält bevorzugt zumindest Polyethylenterephthalat (PET), Polyethylen (PE) oder Gemische oder Copolymere oder Derivate davon und weist bevorzugt eine Dicke von 5 μηη bis 500 μηη, besonders bevorzugt von 10 μηη bis 200 μηη auf. Das ist besonders vorteilhaft für die Handhabung, die Stabilität und die optischen Eigenschaften der Trägerfolie. Die Erfindung umfasst weiter ein Verfahren zur Herstellung einer erfindungsgemäßen Verbundscheibe, wobei The functional coating is preferably applied to a surface of the polymeric disk or to a carrier film within the intermediate layer. The carrier film preferably contains at least polyethylene terephthalate (PET), polyethylene (PE) or mixtures or copolymers or derivatives thereof and preferably has a thickness of from 5 μm to 500 μm, particularly preferably from 10 μm to 200 μm. This is particularly advantageous for the handling, the stability and the optical properties of the carrier film. The invention further comprises a method for producing a composite pane according to the invention, wherein
- eine erfindungsgemäße polymere Scheibe bereitgestellt wird,  a polymer disc according to the invention is provided,
- eine erfindungsgemäße Glasscheibe bereitgestellt wird und - A glass sheet according to the invention is provided and
- die polymere Scheibe mit der Glasscheibe flächig verbunden wird.  - The polymeric disc is connected to the glass sheet surface.
Die polymere Scheibe wird bevorzugt durch Spritzgießen hergestellt. Die Glasscheibe wird bevorzugt als Flachglas hergestellt und auf die gewünschte Größe und Form zurechtgeschnitten. Weist die zu fertigende Verbundscheibe nur eine Krümmung in einer Richtung auf, so kann die plane Scheibe aufgrund ihrer geringen Dicke direkt beim Verbinden mit der polymeren Scheibe gebogenen werden. Besonders im Kraftfahrzeugbereich treten aber in der Regel Biegungen in mehreren Richtungen des Raums auf. Dafür wird die Glasscheibe einem Biegeprozess bei erhöhten Temperaturen unterzogen, beispielsweise bei 500°C bis 700°C. Nach dem Biegen wird die Scheibe langsam abgekühlt. Ein zu schnelles Abkühlen erzeugt thermische Spannungen in der Scheibe. Die Abkühlrate beträgt bevorzugt bis zur Abkühlung auf eine Temperatur von 400 °C bevorzugt von 0,5 °C/sec bis 1 °C/sec. Durch ein derartig langsames Abkühlen können thermische Spannungen im Glas vermieden werden, welche insbesondere zu optischen Mängeln führen. Es kann danach weiter abgekühlt werden, auch mit höheren Abkühlraten, weil unterhalb 400 °C die Gefahr der Erzeugung thermischen Spannungen gering ist. The polymeric disk is preferably made by injection molding. The glass sheet is preferably produced as flat glass and cut to the desired size and shape. If the composite pane to be produced has only one curvature in one direction, then the flat pane can, due to its small thickness, be bent directly upon connection to the polymeric pane. But especially in the automotive sector bends occur in several directions of the room in the rule. For this, the glass sheet is subjected to a bending process at elevated temperatures, for example at 500 ° C to 700 ° C. After bending, the disc is slowly cooled. Too fast cooling produces thermal stresses in the disk. The cooling rate is preferably until cooling to a temperature of 400 ° C, preferably from 0.5 ° C / sec to 1 ° C / sec. By such a slow cooling thermal stresses in the glass can be avoided, which lead in particular to optical defects. It can then be further cooled, even with higher cooling rates, because below 400 ° C the risk of generating thermal stresses is low.
Die polymere Scheibe und die Glasscheibe werden bevorzugt durch Lamination über eine thermoplastische Zwischenschicht miteinander verbunden. Die Herstellung des Verbundglases durch Lamination erfolgt mit an sich bekannten Methoden, beispielsweise Autoklavverfahren, Vakuumsackverfahren, Vakuumringverfahren, Kalanderverfahren, Vakuum- laminatoren oder Kombinationen davon. Die Verbindung von Glasscheibe und polymerer Scheibe erfolgt dabei üblicherweise unter Einwirkung von Hitze, Vakuum und / oder Druck. The polymeric disk and the glass sheet are preferably bonded together by lamination via a thermoplastic intermediate layer. The laminated glass is produced by lamination by methods known per se, for example autoclave methods, vacuum bag methods, vacuum ring methods, calendering methods, vacuum laminators or combinations thereof. The connection of the glass pane and the polymeric pane usually takes place under the action of heat, vacuum and / or pressure.
Alternativ können die Glasscheibe und die polymere Scheibe mithilfe eines Klebstoffs verbunden werden, der bei Raumtemperatur chemisch aushärtet. Bei diesem Verfahren tritt keine Verformung des Verbundes aufgrund unterschiedlicher thermischer Ausdehnungskoeffizienten von Glas und Polymer auf. Die erfindungsgemäße Verbundscheibe wird bevorzugt in Fortbewegungsmitteln für den Verkehr auf dem Lande, in der Luft oder zu Wasser verwendet, insbesondere in Zügen, Schiffen und Kraftfahrzeugen, beispielsweise als Windschutzscheibe, Dachscheibe, Heckscheibe oder Seitenscheibe. Alternatively, the glass sheet and the polymeric disk can be bonded using an adhesive which chemically cures at room temperature. In this method, no deformation of the composite due to different thermal expansion coefficients of glass and polymer occurs. The composite pane according to the invention is preferably used in means of transport for traffic on land, in the air or on water, in particular in trains, ships and motor vehicles, for example as windshield, roof window, rear window or side window.
Die Erfindung umfasst weiter die Verwendung einer nicht vorgespannten Glasscheibe mit einer Dicke von 0,3 mm bis 1 mm in einer Verbundscheibe zur Erhöhung der Stabilität und Kratzfestigkeit einer polymeren Scheibe, bevorzugt Fahrzeugscheibe, besonders bevorzugt Seitenscheibe, Heckscheibe, Windschutzscheibe oder Dachscheibe. The invention further includes the use of a non-tempered glass sheet with a thickness of 0.3 mm to 1 mm in a composite disk for increasing the stability and scratch resistance of a polymeric disk, preferably vehicle window, particularly preferably side window, rear window, windshield or roof window.
Im Folgenden wird die Erfindung anhand von Zeichnungen und Ausführungsbeispielen näher erläutert. Die Zeichnungen sind schematische Darstellungen und nicht maßstabsgetreu. Die Zeichnungen schränken die Erfindung in keiner Weise ein. Es zeigen: In the following the invention will be explained in more detail with reference to drawings and exemplary embodiments. The drawings are schematic representations and not to scale. The drawings in no way limit the invention. Show it:
Fig. 1 einen Querschnitt durch eine Ausgestaltung der erfindungsgemäßen  Fig. 1 shows a cross section through an embodiment of the invention
Verbundscheibe,  Laminated pane,
Fig. 2 einen Querschnitt durch eine weitere Ausgestaltung der erfindungsgemäßen  2 shows a cross section through a further embodiment of the invention
Verbundscheibe,  Laminated pane,
Fig. 3 einen Querschnitt durch eine weitere Ausgestaltung der erfindungsgemäßen 3 shows a cross section through a further embodiment of the invention
Verbundscheibe,  Laminated pane,
Fig. 1 zeigt eine erfindungsgemäße Verbundscheibe, welche aus einer polymeren Scheibe 1 und einer Glasscheibe 2 besteht, die über eine Zwischenschicht 3 miteinander laminiert sind. Die Verbundscheibe ist beispielsweise als Seitenscheibe eines Kraftfahrzeugs vorgesehen, wobei die polymere Scheibe 1 in Einbaulage die Innenscheibe ist und die Glasscheibe 2 die Außenscheibe. Die polymere Scheibe 1 ist also dem Innenraum des Kraftfahrzeugs zugewandt und die Glasscheibe 2 der äußeren Umgebung. Die polymere Scheibe 1 besteht aus Polycarbonat (PC) und weist eine Dicke von zum Beispiel 4 mm auf. Durch die polymere Scheibe 1 hat die Verbundscheibe ein vorteilhaft geringes Gewicht. Die Glasscheibe 2 ist nicht vorgespannt und weist eine Dicke von beispielsweise 0,5 mm auf. Die dünne Glasscheibe 2 erhöht das Gewicht der Verbundscheibe nur geringfügig, verbessert aber signifikant die Stabilität und Kratzfestigkeit sowie die akustischen Eigenschaften. Die Zwischenschicht 3 besteht aus Polyurethan (PU) mit einer Dicke von 0,72 mm. Beim Laminieren der Polyurethan-Zwischenschicht und der Polycarbonat-Scheibe tritt überraschend eine verminderte Diffusion zwischen Zwischenschicht 3 und polymerer Scheibe 1 auf als bei vielen anderen üblichen thermoplastischen Materialien, wie beispielsweise PVB. 1 shows a composite pane according to the invention, which consists of a polymeric pane 1 and a glass pane 2, which are laminated together via an intermediate layer 3. The composite pane is provided, for example, as a side window of a motor vehicle, wherein the polymeric pane 1 is the inner pane in the installed position and the glass pane 2 is the outer pane. The polymeric disc 1 is thus facing the interior of the motor vehicle and the glass pane 2 of the external environment. The polymeric disc 1 is made of polycarbonate (PC) and has a thickness of, for example, 4 mm. Due to the polymeric disk 1, the composite disk has an advantageously low weight. The glass sheet 2 is not biased and has a thickness of, for example, 0.5 mm. The thin glass plate 2 only slightly increases the weight of the composite pane, but significantly improves the stability and scratch resistance as well as the acoustic properties. The intermediate layer 3 is made of polyurethane (PU) with a thickness of 0.72 mm. In laminating the polyurethane interlayer and the polycarbonate disk, surprisingly, there is a decreased diffusion between interlayer 3 and polymeric disk 1 than with many other common thermoplastic materials, such as PVB.
Fig. 2 zeigt eine weitere Ausgestaltung der erfindungsgemäßen Verbundscheibe. Die polymere Scheibe 1 ist über eine Schicht 7 aus Silikonklebstoff mit einer ersten Glasscheibe verklebt. Die Verbundscheibe ist beispielsweise als Dachscheibe eines Kraftfahrzeugs vorgesehen, wobei die Glasscheibe 2 die Außenscheibe ist. Auf der dem Innenraum zugewandten Seite der polymeren Scheibe ist eine Kratzschutzbeschichtung aufgebracht, die die polymere Scheibe vor Beschädigungen schützt. Fig. 2 shows a further embodiment of the composite pane according to the invention. The polymeric disk 1 is glued to a first glass sheet via a layer 7 of silicone adhesive. The composite pane is provided, for example, as a roof panel of a motor vehicle, wherein the glass pane 2 is the outer pane. On the interior of the facing side of the polymeric disc, a scratch-resistant coating is applied, which protects the polymeric disc from damage.
Fig. 3 zeigt eine weitere Ausgestaltung der erfindungsgemäßen Verbundscheibe. Die polymere Scheibe 1 ist über eine erste Zwischenschicht 3 mit einer ersten Glasscheibe 2 und über eine zweite Zwischenschicht 5 mit einer zweiten Glasscheibe 4 verbunden. Die Glasscheiben 2,4, welche beispielsweise eine Dicke von 0,4 mm aufweisen, schützen die polymere Scheibe 1 beidseitig vor Verkratzen und verbessern die akustischen Eigenschaften und die Stabilität der Scheibe. Fig. 3 shows a further embodiment of the composite pane according to the invention. The polymeric pane 1 is connected to a first glass pane 2 via a first intermediate layer 3 and to a second glass pane 4 via a second intermediate layer 5. The glass sheets 2,4, which have a thickness of 0.4 mm for example, protect the polymeric disk 1 on both sides from scratching and improve the acoustic properties and the stability of the disk.
Im Folgenden werden die Vorteile einer erfindungsgemäßen Verbundscheibe (Beispiel) im Vergleich mit einer herkömmlichen Windschutzscheibe (Vergleichsbeispiel 2) und mit einer Verbundscheibe mit dünnem chemisch vorgespanntem Glas (Vergleichsbeispiel 1 ) erläutert. Für alle drei Verbundscheiben gilt der in Figur 1 beschriebene allgemeine Aufbau. Dabei ist die Scheibe 1 in Einbaulage die Innenscheibe und die Glasscheibe 2 in Einbaulage die Außenscheibe. Der Aufbau der drei verglichenen Scheiben ist in der folgenden Tabelle aufgeführt. The advantages of a composite pane according to the invention (example) in comparison with a conventional windshield (comparative example 2) and with a thin chemically tempered glass pane (comparative example 1) are explained below. The general structure described in FIG. 1 applies to all three composite disks. In this case, the disc 1 in the installed position, the inner pane and the glass pane 2 in the installed position, the outer pane. The structure of the three discs compared is shown in the following table.
Beispiel Vergleichsbeispiel 1 Vergleichsbeispiel 2 Example Comparative Example 1 Comparative Example 2
Glasscheibe 2 Glass pane 2
Dicke 0,55 mm 0,7 mm 2, 1 mm  Thickness 0.55 mm 0.7 mm 2, 1 mm
Vorspannung nichtchemisch nicht-vorgespannt vorgespannt vorgespannt  Preload non-preloaded preloaded non-preloaded preloaded
Scheibe 1  Disc 1
Material Polycarbonat Polycarbonat Kalk-Natron-Glas,  Material Polycarbonate Polycarbonate Lime-soda-glass,
4 mm 4 mm 1 ,6 mm  4 mm 4 mm 1, 6 mm
Zwischenschicht Polyurethan Polyurethan Polyvinylbutyral Durchgeführte Stabilitätstests: Interlayer Polyurethane Polyurethane Polyvinyl butyral Performed stability tests:
Stabilität gegenüber Steinschlag (spitzer Stein) und Kratzern Stability to stone chipping (sharp stone) and scratches
Ein Projektil mit Diamantspitze wurde aus wachsender Höhe auf das erfindungsgemäße Verbundglas (Beispiel) fallengelassen, um das Auftreffen eines spitzen Steins zu simulieren. Gemessen wurde die Höhe, bei der das Verbundglas brach. Bei Auftreffen auf die Glasscheibe 2 war bei einer Höhe von 1200 mm Glasbruch zu beobachten. Dieses Ergebnis für das erfindungsgemäße Verbundglas mit dem nicht-vorgespannten Glas war überraschend besser als das für das Vergleichsbeispiel 1 mit chemisch vorgespanntem Glas (Glasbruch ab einer Höhe von 100 mm). Beim Vergleichsbeispiel 2, einer herkömmlichen Windschutzscheibe mit dickem Glas, wurde bei 1 100 mm Glasbruch beobachtet. Demnach weist die erfindungsgemäße Scheibe überraschend eine noch höhere Steinschlagfestigkeit als eine herkömmliche Windschutzscheibe auf. A projectile with a diamond tip was dropped from an increasing height onto the laminated glass according to the invention (example) to simulate the impact of a sharp stone. The height was measured at which the laminated glass broke. When hitting the glass pane 2 was observed at a height of 1200 mm glass breakage. This result for the inventive laminated glass with the non-tempered glass was surprisingly better than that for Comparative Example 1 with chemically toughened glass (broken glass from a height of 100 mm). In Comparative Example 2, a conventional thick-glass windshield, glass breakage was observed at 1100 mm. Accordingly, the disc according to the invention surprisingly has an even higher stone chip resistance than a conventional windshield.
Um die Bruchstabilität nach Kratzern zu untersuchen, wurden mit einer Diamantspitze Kratzer (etwa 50 bis 100 Mikrometer tief) auf die Glasoberfläche aufgebracht. Derartige Kratzer können zum Beispiel durch den Aufprall kleiner Steine oder durch scharfkantige Steine oder Partikel, die beim Hoch- und Runterfahren einer Seitenscheibe eingeklemmt wurden, auftreten. Bei diesem Test brachen signifikant weniger Proben des erfindungsgemäßen Verbundglases als Proben des Vergleichsbeispiels 1. Diese erhöhte Stabilität gegenüber dem Vergleichsbeispiel 1 mit chemisch vorgespanntem Glas war überraschend. Kugelfall-Tests nach ECE R43 In order to investigate the fracture stability after scratches, scratches (about 50 to 100 microns deep) were applied to the glass surface with a diamond tip. Such scratches can occur, for example, by the impact of small stones or by sharp-edged stones or particles that were trapped when raising and lowering a side window. In this test, significantly fewer samples of the laminated glass according to the invention broke apart than samples of Comparative Example 1. This increased stability over the comparative example 1 with chemically toughened glass was surprising. Falling ball tests according to ECE R43
Die Tests wurden an einer 30cm x 30cm-Probe des zu untersuchenden Verbundglases durchgeführt. Beim ersten Test wurde eine Stahlkugel mit einem Gewicht von 227 g aus einer Höhe von 8,5 m auf die Glasscheibe 2 fallengelassen. Dieser Test simuliert das Auftreffen eines Steins von außen auf das Verbundglas. Der Test galt als bestanden, wenn die Kugel vom Verbundglas aufgehalten wurde. Alle drei Proben bestanden den Test. Beim erfindungsgemäßen Verbundglas wurde die polymere Scheibe nicht beschädigt. Insbesondere trat kein Splitterabgang auf der Rückseite (Seite der polymeren Scheibe 1 ) auf, was für den Insassen vorteilhaft ist. Beim zweiten Test wurde eine Stahlkugel mit einem Gewicht von 2260 g aus einer Höhe von 4 m auf die Innenscheibe 1 fallengelassen. Dieser Test simuliert das Auftreffen des Kopfs eines Fahrzeuginsassen auf das Verbundglas. Der Test galt als bestanden, wenn die Kugel vom Verbundglas aufgehalten wurde und dieses nicht innerhalb von 5 s nach dem Aufbrechen durchdrang. Die Verbundscheiben nach Beispiel und Vergleichsbeispiel 1 bestanden den Test und die Polycarbonatscheiben wurden nicht gebrochen. The tests were performed on a 30cm x 30cm sample of the laminated glass to be tested. In the first test, a steel ball weighing 227 g was dropped onto the glass sheet 2 from a height of 8.5 m. This test simulates the impact of a stone on the outside of the laminated glass. The test was passed when the ball was stopped by the laminated glass. All three samples passed the test. The laminated glass of the invention did not damage the polymeric disk. In particular, no fragmentation on the back (side of the polymeric disk 1) occurred, which is advantageous for the occupant. In the second test, a steel ball weighing 2260 g was dropped onto the inner pane 1 from a height of 4 m. This test simulates the impact of the head of a vehicle occupant on the laminated glass. The test was passed when the ball was held up by the laminated glass and did not penetrate within 5 seconds after rupture. The composite discs of Example and Comparative Example 1 passed the test and the polycarbonate discs were not broken.
Erwartungsgemäß bestand auch die Verbundscheibe nach Vergleichsbeispiel 2 den Test. Allerdings wurden bei dieser herkömmlichen Windschutzscheibe zum Teil mehr Splitterabgänge beobachtet. As expected, the composite disc according to Comparative Example 2 also passed the test. However, in this conventional windshield more splitter outlets were sometimes observed.
Bezugszeichenliste: LIST OF REFERENCE NUMBERS
(1 ) polymere Scheibe(1) polymeric disk
(2) Glasscheibe (2) glass pane
(3) Zwischenschicht (3) intermediate layer
(4) zweite Glasscheibe(4) second glass pane
(5) zweite Zwischenschicht(5) second intermediate layer
(6) Schutzschicht (6) protective layer
(7) Klebeschicht  (7) Adhesive layer

Claims

Patentansprüche claims
1 . Fahrzeug- Verbundscheibe, mindestens umfassend 1 . Vehicle composite disc, at least comprising
- eine polymere Scheibe (1 ) mit einer Dicke von 1 ,5 mm bis 10 mm und  - A polymeric disc (1) with a thickness of 1, 5 mm to 10 mm and
- eine mit der polymeren Scheibe (1 ) flächig verbundene Glasscheibe (2) mit einer Dicke von 0,3 mm bis 1 mm,  a glass pane (2), which is connected in a planar manner to the polymeric pane (1) and has a thickness of 0.3 mm to 1 mm,
wobei die polymere Scheibe (1 ) zumindest Polycarbonat (PC) und/oder Polymethyl- methacrylat (PMMA) enthält und wobei die Glasscheibe (2) eine nicht-vorgespannte Scheibe ist.  wherein the polymeric disk (1) contains at least polycarbonate (PC) and / or polymethyl methacrylate (PMMA) and wherein the glass sheet (2) is a non-tempered disk.
2. Verbundscheibe nach Anspruch 1 , wobei die Glasscheibe (2) eine Dicke von 0,3 mm bis 0,7 mm, bevorzugt von 0,35 bis 0,55 mm aufweist. 2. Laminate according to claim 1, wherein the glass sheet (2) has a thickness of 0.3 mm to 0.7 mm, preferably from 0.35 to 0.55 mm.
3. Verbundscheibe nach Anspruch 1 oder 2, wobei die polymere Scheibe (1 ) eine Dicke von 2 mm bis 5 mm aufweist, bevorzugt von 2 mm bis 3 mm. 3. Laminate according to claim 1 or 2, wherein the polymeric disc (1) has a thickness of 2 mm to 5 mm, preferably from 2 mm to 3 mm.
4. Verbundscheibe nach einem der Ansprüche 1 bis 3, wobei die polymere Scheibe (1 ) und die Glasscheibe (2) über eine thermoplastische Zwischenschicht (3) miteinander laminiert sind, die bevorzugt eine Dicke von 0,2 mm bis 1 mm aufweist. 4. Laminate according to one of claims 1 to 3, wherein the polymeric disk (1) and the glass sheet (2) via a thermoplastic intermediate layer (3) are laminated together, which preferably has a thickness of 0.2 mm to 1 mm.
5. Verbundscheibe nach Anspruch 4, wobei die thermoplastische Zwischenschicht (3) zumindest Polyurethan oder Derivate davon enthält. 5. Laminate according to claim 4, wherein the thermoplastic intermediate layer (3) contains at least polyurethane or derivatives thereof.
6. Verbundscheibe nach Anspruch 4 oder 5, wobei die thermoplastische Zwischenschicht (3) eine geräuschmindernde Wirkung aufweist. 6. Laminate according to claim 4 or 5, wherein the thermoplastic intermediate layer (3) has a noise-reducing effect.
7. Verbundscheibe nach einem der Ansprüche 1 bis 3, wobei die polymere Scheibe (1 ) und die Glasscheibe (2) über eine Klebeschicht (7) enthaltend einen chemisch härtenden Klebstoff, bevorzugt einen Silikonklebstoff, miteinander verklebt sind. 7. Laminate according to one of claims 1 to 3, wherein the polymeric disc (1) and the glass sheet (2) via an adhesive layer (7) comprising a chemically curing adhesive, preferably a silicone adhesive, are glued together.
8. Verbundscheibe nach einem der Ansprüche 1 bis 7, wobei die Glasscheibe (2) die Außenscheibe der Verbundscheibe ist. 8. Laminate according to one of claims 1 to 7, wherein the glass pane (2) is the outer pane of the composite pane.
9. Verbundglasscheibe nach einem der Ansprüche 1 bis 8, wobei die von der 9. Laminated glass pane according to one of claims 1 to 8, wherein the of the
Glasscheibe (2) abgewandte Oberfläche der polymeren Scheibe (1 ) mit einer  Glass pane (2) facing away from the surface of the polymeric disc (1) with a
Schutzschicht (6) beschichtet ist, die bevorzugt einen gehärteten Lack enthaltend ein Polysiloxan enthält. Protective layer (6) is coated, which preferably contains a cured paint containing a polysiloxane.
10. Verbundscheibe nach einem der Ansprüche 1 bis 9, wobei die von der Glasscheibe (2) abgewandte Oberfläche der polymeren Scheibe (1 ) mit einer zweiten Glasscheibe (4) flächig verbunden ist. 10. Laminate according to one of claims 1 to 9, wherein the glass pane (2) facing away from the surface of the polymeric disk (1) with a second glass sheet (4) is connected flat.
1 1 . Verbundscheibe nach einem der Ansprüche 1 bis 10, wobei die Glasscheibe (2) 1 1. Composite pane according to one of Claims 1 to 10, the pane of glass (2) being
Borsilikatglas enthält.  Borosilicate glass contains.
12. Verfahren zur Herstellung einer Verbundscheibe nach einem der Ansprüche 1 bis 1 1 , wobei die polymere Scheibe (1 ) und die Glasscheibe (2) bereitgestellt werden und die polymere Scheibe (1 ) mit der Glasscheibe (2) flächig verbunden wird. 12. A method for producing a composite pane according to any one of claims 1 to 1 1, wherein the polymeric disc (1) and the glass sheet (2) are provided and the polymeric disc (1) with the glass sheet (2) is connected flat.
13. Verwendung einer nicht vorgespannten Glasscheibe (2) in einer Verbundscheibe nach einem der Ansprüche 1 bis 1 1 zur Erhöhung der Stabilität und Kratzfestigkeit einer polymeren Scheibe, bevorzugt Fahrzeugscheibe, besonders bevorzugt Seitenscheibe, Heckscheibe, Windschutzscheibe oder Dachscheibe. 13. Use of a non-tempered glass pane (2) in a composite pane according to one of claims 1 to 1 1 for increasing the stability and scratch resistance of a polymeric pane, preferably vehicle window, particularly preferably side pane, rear window, windscreen or roof window.
EP15722496.5A 2014-06-12 2015-05-05 Composite pane, composed of a polymeric pane and a glass pane Withdrawn EP3154783A1 (en)

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US20170129219A1 (en) 2017-05-11

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