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.

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

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (5)

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Citations (7)

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• 2015
  • 2015-05-05 EP EP15722496.5A patent/EP3154783A1/de not_active Withdrawn
  • 2015-05-05 MX MX2016016282A patent/MX2016016282A/es unknown
  • 2015-05-05 WO PCT/EP2015/059797 patent/WO2015188982A1/de active Application Filing
  • 2015-05-05 CN CN201580031371.9A patent/CN106457792A/zh active Pending
  • 2015-05-05 US US15/317,825 patent/US20170129219A1/en not_active Abandoned

Patent Citations (7)

Non-Patent Citations (1)

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