EP4132782A1 - Mehrlagige gefärbte zwischenschicht mit keilförmigem querschnitt - Google Patents
Mehrlagige gefärbte zwischenschicht mit keilförmigem querschnittInfo
- Publication number
- EP4132782A1 EP4132782A1 EP21713684.5A EP21713684A EP4132782A1 EP 4132782 A1 EP4132782 A1 EP 4132782A1 EP 21713684 A EP21713684 A EP 21713684A EP 4132782 A1 EP4132782 A1 EP 4132782A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- thermoplastic
- colored
- intermediate layer
- pane
- 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.)
- Pending
Links
Classifications
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- B32B17/10559—Shape of the cross-section
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- 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
-
- 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
- B32B2605/12—Ships
-
- 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
- B32B2605/18—Aircraft
Definitions
- the invention relates to a multi-layer colored intermediate layer with a wedge-shaped cross section, a composite pane having such an intermediate layer, a method for its production and its use.
- Vehicle includes, among other things, road vehicles, aircraft, ships, agricultural machines and also work equipment.
- Composite panes are also used in other areas. These include, for example, building glazing or information displays, e.g. in museums or as advertising displays.
- a composite pane generally has two panes that are laminated onto an intermediate layer.
- the disks themselves can have a curvature and are generally of constant thickness.
- the intermediate layer usually comprises a thermoplastic material, preferably polyvinyl butyral (PVB), of a predetermined thickness, e.g. 0.76 mm.
- PVB polyvinyl butyral
- Composite panes are often used as a head-up display (HUD) to display information.
- An image is projected onto the laminated glass panes by means of a projection device in order to display information in the field of view for the viewer.
- the projection device is arranged on the dashboard, for example, so that the projected image is reflected in the direction of the viewer on the closest glass surface of the laminated glass pane inclined towards the viewer (cf., for example, EP 0420228 B1 or DE 102012 211 729 A1).
- a part of the Light enters the laminated glass panes and is then reflected, for example, at the outer boundary layer of the glass surface which is further outward as seen from the viewer, and then exits the laminated glass pane in an offset manner.
- a similar effect occurs, the effect of ghost images, in relation to the image to be displayed.
- a purely classical compensation of ghost images leads to an overcompensation for double images in transmission. This leads to the fact that the respective viewer is irritated or, in the worst case, receives incorrect information.
- This problem can be solved by arranging the surfaces of the panes no longer parallel, but at a fixed angle. This is achieved, for example, in that the intermediate layer and / or at least one of the panes is wedge-shaped with a continuously linear and / or non-linear increasing and / or decreasing thickness. In vehicle construction, the thickness is typically varied so that the smallest thickness is provided at the lower end of the laminated glass pane towards the engine compartment, while the thickness increases towards the roof.
- a multilayer intermediate layer comprising an acoustically damping layer arranged between two layers is usually laminated between the two panes of the composite pane.
- WO 2018/081570 A1 disclose wedge-shaped multilayer intermediate layers which comprise a layer of constant thickness and a layer with a wedge-shaped cross section, the layer of constant thickness being an acoustic layer arranged between two protective layers Includes cushioning layer.
- WO 2019/189741 A1 discloses a wedge-shaped multilayer intermediate layer which comprises an infrared reflective layer, a first resin layer and a second resin layer, the first resin layer being arranged on a first surface side of the infrared reflective layer, the second resin layer being arranged on a second surface side facing the first surface of the infrared reflective layer, and wherein at least one of the first resin layer and the second resin layer has a wedge angle of 0.1 mrad or more, and at least one of the first resin layer and the second resin layer contains a colorant.
- the present invention is based on the object of providing a multi-layer, colored intermediate layer with a wedge-shaped cross section, in which the
- Light transmission is constant over the entire area, the color is essentially constant over the entire area and / or which is easy to produce.
- the object of the present invention is achieved according to the invention by a multi-layer, colored thermoplastic intermediate layer according to claim 1 and a method according to claim 12 or 13.
- the invention also relates to a composite pane, a projection arrangement and the use of the multi-layer colored thermoplastic intermediate layer according to the independent claims. Preferred embodiments emerge from the subclaims.
- the invention relates to a multi-layer, colored thermoplastic intermediate layer, at least comprising a first thermoplastic layer with a wedge-shaped cross section and a second thermoplastic layer with an essentially constant thickness.
- the multi-layered, colored thermoplastic intermediate layer has a wedge-shaped cross section.
- the thermoplastic intermediate layer has a thicker first end and a thinner one second end on. The increase in thickness from the second end to the first end can be continuously linear or non-linear.
- the first thermoplastic layer is colorless and the second thermoplastic layer is colored with a dye.
- the dye can be, for example, an ink or a colored pigment.
- the advantage of organic inks in particular over inorganic pigments in particular is that they are easier to spread. However, organic inks are not as stable as inorganic pigments and age faster. Inorganic pigments agglomerate rather than organic inks.
- the person skilled in the art is familiar with inks or color pigments suitable for the respective application, so that they will not be discussed in more detail below.
- the dye concentration in the second thermoplastic layer is constant over its entire width, height and thickness.
- the multi-layer colored thermoplastic intermediate layer preferably has a wedge angle in the range from 0.1 mrad to 1.0 mrad, particularly preferably 0.3 mrad to 0.6 mrad, for example 0.5 mrad.
- the thickness of the multi-layer, colored thermoplastic intermediate layer at its thinner second end is preferably between 0.3 mm and 1.0 mm, particularly preferably between 0.6 mm and 0.9 mm, for example 0.76 mm.
- an essentially constant thickness of a layer is understood to mean that the thickness of the layer is constant over the length and width, i.e. consequently over the entire surface of the layer, within the framework of normal manufacturing tolerances. This preferably means that the thickness varies by no more than 3%, preferably by no more than 2%, particularly preferably by no more than 1%.
- the first thermoplastic layer contains at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or mixtures or copolymers or derivatives thereof, preferably polyvinyl butyral (PVB), particularly preferably polyvinyl butyral (PVB) and plasticizers.
- the second thermoplastic layer contains a dye and at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or mixtures or copolymers or derivatives thereof, preferably polyvinyl butyral (PVB), particularly preferably polyvinyl butyral (PVB) and plasticizers.
- the multi-ply colored thermoplastic intermediate layer according to the invention additionally comprises an acoustically damping layer with an essentially constant thickness, the acoustically damping layer being arranged between the first thermoplastic layer and the second thermoplastic layer.
- the additional acoustically damping layer can be colorless or colored with a dye.
- the dye can be an ink or colored pigments.
- the invention thus also relates to a multi-layered colored thermoplastic intermediate layer at least comprising in this sequence a colorless first thermoplastic layer with a wedge-shaped cross-section, an acoustically damping layer with an essentially constant thickness and a second thermoplastic layer colored with a dye with an essentially constant thickness, the acoustically damping layer is colorless or colored with a dye.
- the acoustically damping layer is preferably thinner than 300 ⁇ m (micrometers).
- the thickness of the acoustically damping layer is in particular 70 ⁇ m to 130 ⁇ m, for example 100 ⁇ m.
- the acoustically damping layer can contain at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), acrylates or mixtures or copolymers or derivatives thereof and plasticizers, preferably polyvinyl butyral (PVB) and plasticizers.
- PVB polyvinyl butyral
- EVA ethylene vinyl acetate
- PU polyurethane
- acrylates or mixtures or copolymers or derivatives thereof acrylates or mixtures or copolymers or derivatives thereof and plasticizers, preferably polyvinyl butyral (PVB) and plasticizers.
- the acoustically damping layer also contains a dye.
- the multi-layer colored intermediate layer additionally comprises a third thermoplastic layer which is colorless and has a wedge-shaped cross section wherein the second thermoplastic layer is arranged between the first thermoplastic layer and the third thermoplastic layer.
- the invention thus also relates to a multi-ply colored thermoplastic intermediate layer at least comprising in this sequence a colorless first thermoplastic layer with a wedge-shaped cross section, a second thermoplastic layer colored with a dye with an essentially constant thickness and a colorless third thermoplastic layer with a wedge-shaped cross section.
- the colorless third thermoplastic layer preferably has a wedge angle in the range from 0.05 mrad to 0.5 mrad, particularly preferably 0.15 mrad to 0.3 mrad, for example 0.25 mrad.
- the multi-layer colored intermediate layer additionally has a third thermoplastic layer with a wedge-shaped cross section
- the layers with a wedge-shaped cross section are arranged in such a way that the thinner ends lie one above the other and the thicker ends lie one above the other, ie the increase in thickness of the two layers runs in the same direction.
- the third thermoplastic layer can contain at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or mixtures or copolymers or derivatives thereof, preferably polyvinyl butyral (PVB), particularly preferably polyvinyl butyral (PVB) and plasticizers.
- PVB polyvinyl butyral
- EVA ethylene vinyl acetate
- PU polyurethane
- PVB polyvinyl butyral
- plasticizers plasticizers
- the second thermoplastic layer is preferably designed as a layer with acoustically damping properties.
- a second thermoplastic layer embodied as a layer with acoustically damping properties preferably has a thickness of less than 300 ⁇ m.
- a second thermoplastic layer designed as a layer with acoustic damping properties can contain at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), acrylates or mixtures or copolymers or derivatives thereof and plasticizers, preferably polyvinyl butyral (PVB) and plasticizers.
- PVB polyvinyl butyral
- EVA ethylene vinyl acetate
- PU polyurethane
- acrylates or mixtures or copolymers or derivatives thereof acrylates or mixtures or copolymers or derivatives thereof and plasticizers, preferably polyvinyl butyral (PVB) and plasticizers.
- the light transmission through the multilayer colored thermoplastic intermediate layer is preferably constant over its entire surface.
- the color of the multilayer colored thermoplastic intermediate layer is essentially constant over its entire surface.
- color differences are usually calculated as the Euclidean distance between the L * a * b * values of two colors measured at different measurement points.
- an essentially constant color means that the color distance in accordance with the requirements of the automotive industry, ie the Euclidean distance DE 'taking into account the sensitivity of the eye, is less than 0.5, preferably less than 0.2.
- Li * luminance at a first point
- L 2 * luminance at a second point
- a * value for the green or red component of a color at a first point
- a 2 * value for the green or red component of a color at a second
- Digit bi * value for the blue or yellow component of a color at a first point
- b 2 * value for the blue or yellow component of a color at a second point
- the multi-ply colored thermoplastic intermediate layer can optionally additionally have a colored band of different color intensity, a so-called shaded band as described, for example, in US Pat. No. 4,562,023. It goes without saying that in the field of such an additional colored band the light transmission and the color is not constant.
- the invention also relates to a composite pane, at least comprising a first pane and a second pane, which are connected to one another via the multi-layered, colored thermoplastic intermediate layer according to the invention.
- the multi-layer, colored thermoplastic intermediate layer according to the invention has, as described above, a wedge-shaped cross section and can be designed as in the various embodiments described above.
- the composite pane according to the invention has an upper edge and a lower edge.
- the upper edge denotes that side edge of the composite pane which is intended to point upwards in the installed position.
- the lower edge denotes that side edge which is intended to point downwards in the installation position. If the composite pane is the windshield of a motor vehicle, the upper edge is often referred to as the roof edge and the lower edge as the engine edge.
- the first disk and the second disk each have an outside and an inside surface and a circumferential side edge running between them.
- the outside surface denotes that main surface which is intended to face the external environment in the installed position.
- the interior-side surface denotes that main surface which is intended to face the interior in the installed position.
- the first disk is an outer disk and the second disk is an inner disk. In an alternative embodiment, the first disk is an inner disk and the second disk is an outer disk.
- inner pane denotes that pane which, in the installed position, is intended to face the interior of the vehicle.
- Outer pane is that pane which is intended to face the external surroundings of the vehicle in the installed position.
- the first disk and the second disk have a substantially constant cross section.
- first disk and / or the second disk may have a wedge-shaped cross section.
- the wedge angle of such a disk with a wedge-shaped cross section is preferably 0.05 mrad to 0.5 mrad, particularly preferably 0.15 mrad to 0.3 mrad, for example 0.25 mrad.
- a substantially constant cross section of a disk is to be understood as meaning that the thickness of the disk is constant over the length and width within the framework of normal manufacturing tolerances. This preferably means that the thickness varies by no more than 7%, preferably by no more than 5%, particularly preferably by no more than 3%.
- the composite pane according to the invention comprises a multi-ply colored thermoplastic intermediate layer according to the invention with a wedge-shaped cross section and two panes with an essentially constant thickness or with a wedge-shaped cross section, the composite pane according to the invention has a wedge-shaped cross section.
- the cross-section means the cross-section in the vertical course between the lower edge and the upper edge.
- the thickness increases from the lower edge to the upper edge. The thicker first end is thus located on the upper edge and the thinner second end on the lower edge of the composite pane.
- the thickness is typically varied so that the smallest thickness is provided at the lower end of the laminated glass pane towards the engine compartment, while the thickness increases towards the roof.
- the wedge angle of the composite pane according to the invention is preferably 0.1 mrad to 1.0 mrad, particularly preferably 0.3 mrad to 0.6 mrad, for example 0.5 mrad.
- the composite pane according to the invention can comprise one or more additional intermediate layers, in particular functional intermediate layers, these additional intermediate layers being of essentially constant thickness. That is, the one or more additional intermediate layers do not have a wedge angle.
- This at least one additional intermediate layer is arranged between the first pane and the multi-layered, colored thermoplastic intermediate layer or between the second pane and the multi-layered, colored thermoplastic intermediate layer. If the composite pane according to the invention has two or more additional intermediate layers, it is also possible for at least one of the additional intermediate layers to be arranged between the first pane and the multi-layered, colored thermoplastic intermediate layer and at least one of the additional intermediate layer between the second pane and the multi-layered, colored thermoplastic intermediate layer is arranged.
- An additional intermediate layer can in particular be an element that reflects infrared radiation, a layer that absorbs ultraviolet radiation, a barrier layer or a combination of these. If several additional intermediate layers are present, these can also have different functions.
- the additional intermediate layer can also be designed as a functional intermediate layer with acoustically damping properties. It goes without saying that the additional intermediate layer is preferably designed as a functional intermediate layer with acoustically damping properties when the multi-layered, colored thermoplastic intermediate layer does not already comprise a layer with acoustically damping properties.
- the first pane and the second pane are preferably made of glass, particularly preferably of soda-lime glass, as is customary for window panes.
- the panes can also be made from other types of glass, for example quartz glass, borosilicate glass or aluminosilicate glass, or from rigid, clear plastics, for example polycarbonate or polymethyl methacrylate.
- the first pane and / or the second pane can have anti-reflective coatings, non-stick coatings, anti-scratch coatings, photocatalytic coatings, electrically heatable coatings, sun protection coatings and / or low-E coatings.
- the thickness of the first disk and the second disk can vary widely and thus be adapted to the requirements in the individual case.
- the first disk and the second disk preferably have thicknesses from 1 mm to 5 mm, particularly preferably from 1 mm to 3 mm.
- the pane that represents the outer pane in the installed position is 2.1 mm thick and the pane that represents the inner pane in the installed position is 1.6 mm thick.
- the first pane or the second pane, in particular the pane that represents the inner pane can, however, also be thin glass with a thickness of, for example, 0.55 mm.
- the first disk and / or the second disk can also have a wedge-shaped cross section.
- the thickness is preferably 1 mm to 5 mm at the thinner end.
- the height of the first pane and the second pane ie in the case of a windshield the distance between the roof edge of the composite pane and the engine edge of the composite pane is preferably between 0.8 m and 1.40 m, particularly preferably between 0.9 m and 1, 25 m, for example 1.0 m. It goes without saying that the height of the multi-layered, colored thermoplastic intermediate layer and the optional additional intermediate layers are preferably between 0.8 m and 1.40 m, particularly preferably between 0.9 m and 1, 25 m, for example 1.0 m.
- the composite pane according to the invention can be a vehicle pane.
- a vehicle window is provided for separating a vehicle interior from an external environment.
- a vehicle window is therefore a window that is inserted into a window opening in the vehicle body or is intended for this purpose.
- a composite pane according to the invention is in particular a windshield of a motor vehicle.
- the first pane and the second pane can be clear and colorless, but also tinted, cloudy or colored, independently of one another.
- the total transmission through the In a preferred embodiment, the composite pane is greater than 70%, in particular if the composite pane is a windshield.
- the term overall transmission refers to the procedure for testing the light transmission of vehicle windows specified by ECE-R 43, Annex 3, Section 9.1.
- the first pane and the second pane can consist of non-toughened, partially toughened or toughened glass, for example.
- the coloring or tinting is designed in such a way that the composite pane has a light transmission of greater than 70% in the spectral range from 380 nm to 780 nm.
- the color or tint can also be made darker and the composite panes thus have a light transmission of 70% or less in the spectral range from 380 nm to 780 nm.
- a composite pane according to the invention can additionally comprise a cover print, in particular made of a dark, preferably black, enamel.
- the cover print is in particular a peripheral, i.e. frame-like, cover print.
- the peripheral masking print serves primarily as UV protection for the assembly adhesive of the composite pane.
- the cover print can be opaque and over the entire area.
- the cover print can also be semitransparent, at least in sections, for example as a point grid, stripe grid or checkered grid. Alternatively, the cover print can also have a gradient, for example from an opaque cover to a semitransparent cover.
- the cover print is usually applied to the interior-side surface of that pane, which in the installed position represents the outer pane, or on the interior-side surface of that pane, which in the installed position represents the inner pane.
- the composite pane according to the invention is preferably bent in one or more directions of the space, as is customary for motor vehicle windows, typical radii of curvature being in the range from about 10 cm to about 40 m.
- the laminated glass can also be flat, for example if it is intended as a pane for buses, trains or tractors.
- the composite pane according to the invention can be used as a head-up display (HUD) for displaying information.
- the invention also relates to a projection arrangement for a head-up display (HUD) at least comprising a composite pane according to the invention and a projector.
- the projector irradiates an area of the windshield where the radiation is reflected in the direction of the viewer (driver), creating a virtual image that the viewer perceives from behind the windshield.
- the area of the windshield that can be irradiated by the projector is referred to as the HUD area.
- the beam direction of the projector can typically be varied by mirrors, in particular vertically, in order to adapt the projection to the body size of the viewer.
- the area in which the viewer's eyes must be with a given mirror position is known as the eyebox window.
- This eyebox window can be shifted vertically by adjusting the mirror, the entire area accessible through this (that is, the overlay of all possible eyebox windows) being referred to as the eyebox.
- a viewer located inside the eyebox can perceive the virtual image. Of course, this means that the viewer's eyes must be located within the eyebox, not the entire body.
- the invention also relates to a method for producing a multi-layer colored thermoplastic intermediate layer, the method comprising at least the step of co-extrusion of at least one colorless first thermoplastic layer with a wedge-shaped cross-section and a second thermoplastic layer colored with a dye and having an essentially constant thickness .
- the extrusion usually takes place at temperatures between 150 ° C and 200 ° C.
- the method comprises the step of co-extrusion of a colorless first thermoplastic layer with a wedge-shaped cross-section and a second thermoplastic layer colored with a dye and having a substantially constant thickness.
- two extruders are required, one for the colorless first thermoplastic layer and one for the second thermoplastic layer colored with a dye.
- the two extruders are connected to a two-slot nozzle.
- the method comprises the step of co-extrusion of a colorless first thermoplastic layer with a wedge-shaped cross-section, a second thermoplastic layer colored with a dye and having a substantially constant thickness and a colorless third thermoplastic layer with a wedge-shaped cross-section, wherein the layers are extruded in such a way that the second thermoplastic layer colored with a dye is arranged between the colorless first thermoplastic layer and the colorless third thermoplastic layer.
- two extruders are required, one extruder for the two outer layers, i.e. the colorless first thermoplastic layer and the colorless third thermoplastic layer and one extruder for the second thermoplastic layer colored with a dye.
- the two extruders are connected to a three-slot nozzle.
- the method comprises the step of co-extrusion of a colorless first thermoplastic layer with a wedge-shaped cross-section, an acoustically damping layer with an essentially constant thickness and a second thermoplastic layer colored with a dye and with an essentially constant thickness, wherein the layers are extruded in such a way that the acoustically damping layer is arranged between the first thermoplastic layer and the second thermoplastic layer.
- three extruders are required, one extruder for the colorless first thermoplastic layer, one extruder for the acoustically damping layer and one extruder for the second thermoplastic layer colored with a dye.
- the acoustically damping layer is colorless, in an alternative embodiment the acoustically damping layer is colored with a dye.
- the dye and its concentration in the acoustically damping layer colored with a dye and the dye and its concentration in the second thermoplastic layer colored with a dye are to be selected in particular in such a way that the resulting color and light transmission of the multilayered colored thermoplastic intermediate layer corresponds to the respective desired requirements.
- the invention also relates to a method for producing a multilayer colored thermoplastic intermediate layer, the method comprising at least the following steps: a) providing a colorless first thermoplastic layer with a wedge-shaped cross-section b) extrusion of a second thermoplastic layer colored with a dye with an essentially constant Thickness; c) arranging the first thermoplastic layer and the second thermoplastic layer flat on top of one another; d) connecting the first thermoplastic layer and the second thermoplastic layer at least in a peripheral edge region.
- step a) The provision of the colorless first thermoplastic layer with a wedge-shaped cross section in step a) can take place by extrusion of a wedge-shaped layer.
- Steps a) and b) can also be carried out in reverse order.
- connection of the first thermoplastic layer and the second thermoplastic layer at least in a circumferential edge area can be carried out, for example, by heating to a temperature above 40 ° C., for example 80 ° C. for a period of at least 10 minutes, for example 20 minutes.
- the first thermoplastic layer and the second thermoplastic layer can also be connected at least in a circumferential edge area by means of a chemical such as an alcohol, in particular ethanol or isopropanol.
- thermoplastic layer and the second thermoplastic layer can also be connected over the entire surface.
- thermoplastic layer and the second thermoplastic layer can also only take place within the scope of the lamination of a composite pane according to the invention comprising a first pane, a second pane and a multilayered, colored thermoplastic intermediate layer according to the invention. In this case, the connection takes place over the entire surface.
- the method in this embodiment comprises, as further steps, the provision of the at least one additional layer, in step c) the first thermoplastic layer , the second thermoplastic layer and the at least one additional layer are arranged flat on top of one another in the desired sequence and in step d) the layers are then connected to one another at least in a circumferential edge region.
- the at least one additional layer can be designed, for example, as an acoustically damping layer or a third thermoplastic layer.
- the method according to the invention comprises an additional step e) between steps b) and c) in which indentations are embossed in at least one of the surfaces of the first thermoplastic layer and in at least one of the surfaces of the second thermoplastic layer.
- a surface roughness Rz of 15 ⁇ m to 45 ⁇ m, for example 30 ⁇ m, can also be achieved in the thermoplastic layers by the melt fracture method known to the person skilled in the art.
- step c) the first thermoplastic layer and the second thermoplastic layer are arranged over one another in such a planar manner that the surfaces into which depressions have been embossed, point to each other.
- the embossed depressions achieve better ventilation when connecting the first thermoplastic layer to the second thermoplastic layer and prevent the multilayered, colored thermoplastic intermediate layer from becoming cloudy. Such clouding could occur because the light transmission and the color of a colored layer vary with the thickness of the colored layer. As described above, the embossed depressions achieve better ventilation and the two layers melt together better.
- the multi-ply colored thermoplastic layer comprises more layers than the first thermoplastic layer and the second thermoplastic layer
- depressions are preferably also made on at least one of the surfaces of the additional layers, which can be designed, for example, as an acoustically damping layer or a third thermoplastic layer embossed, so that in this case, too, a better ventilation is achieved and thus clouding is prevented.
- depressions are embossed in each of the two surfaces of the layers provided for the production of the multilayer colored thermoplastic intermediate layer according to the invention.
- the invention also relates to a method for producing a colored composite pane for a head-up display (HUD), the composite pane having a first pane, a second pane and a multi-layer, colored thermoplastic intermediate layer with a wedge-shaped, arranged between the first pane and the second pane Having cross-section and wherein in the method at least: a) a first disk and a second disk are provided; b) a multilayer colored thermoplastic intermediate layer is provided with a wedge-shaped cross section; c) the multi-ply colored thermoplastic intermediate layer is arranged flat between the first pane and the second pane; and d) the first pane, the multilayer thermoplastic intermediate layer and the second pane are connected by lamination.
- HUD head-up display
- the multi-layer, colored thermoplastic intermediate layer with a wedge-shaped cross section can be provided by one of the methods described above.
- the method can additionally comprise the steps of providing at least one additional intermediate layer and arranging this independently of one another between the first pane and the multi-layered colored thermoplastic intermediate layer or between the second pane and the multi-layered colored thermoplastic intermediate layer.
- the at least one additional intermediate layer has an essentially constant thickness. When providing an additional intermediate layer, this can thus be arranged between the first pane and the multi-layered, colored thermoplastic intermediate layer or between the second panel and the multi-layered, colored thermoplastic intermediate layer.
- additional intermediate layer can thus either be arranged between the first pane and the multi-layered, colored thermoplastic intermediate layer or between the second pane and the multi-layered, colored thermoplastic intermediate layer, or both between the first pane and the multi-layered, colored thermoplastic intermediate layer additional intermediate layers can also be arranged between the second pane and the multi-layered, colored thermoplastic intermediate layer.
- the at least one additional intermediate layer is preferably a functional intermediate layer, in particular an IR-reflecting layer, a UV radiation absorbing layer, a barrier layer, an intermediate layer with acoustically damping properties or a combination of these. If several additional intermediate layers are present, these can also have different functions.
- the first pane and the second pane are preferably subjected to a bending process prior to lamination.
- the first disk and the second disk are preferably bent congruently together (that is to say at the same time and by the same tool), because this changes the shape of the disks for the subsequent one Lamination are optimally coordinated.
- Typical temperatures for glass bending processes are, for example, 500 ° C to 700 ° C.
- the invention also relates to the use of a multilayer colored thermoplastic intermediate layer according to the invention in a vehicle window in means of transport for traffic in the country, in the air or on water, in particular in motor vehicles and in particular in a windshield in a motor vehicle.
- the invention also relates to the use of a composite pane according to the invention as a vehicle pane in means of locomotion for traffic in the country, in the air or on water, in particular in motor vehicles and in particular in a windshield in a motor vehicle.
- FIG. 1 shows the cross section of an embodiment of a multilayer colored thermoplastic intermediate layer according to the invention
- FIG. 2 shows the cross section of a further embodiment of a multilayered colored thermoplastic intermediate layer according to the invention
- FIG. 3 shows the cross section of a further embodiment of a multilayer, colored thermoplastic intermediate layer according to the invention
- FIG. 4 shows the cross section of a further embodiment of a multilayer, colored thermoplastic intermediate layer according to the invention
- FIG. 5 shows the cross section of a further embodiment of a multilayer, colored thermoplastic intermediate layer according to the invention.
- FIG. 6 shows the cross section of an embodiment of a composite pane according to the invention
- 7 shows the cross section of a further embodiment of one according to the invention
- Composite pane; 8 shows the cross section of a further embodiment of a composite pane according to the invention.
- FIG. 10 shows a flow diagram of an embodiment of a method according to the invention
- 11 shows a flow chart of a further embodiment of a method according to the invention.
- thermoplastic intermediate layer 1 an embodiment of a multi-layer, colored thermoplastic intermediate layer 1 according to the invention is shown in cross section.
- the multi-layer, colored thermoplastic intermediate layer 1 consists of a first thermoplastic layer 2 with a wedge-shaped cross section and a second thermoplastic layer 3 of constant thickness.
- the first thermoplastic layer thus has a thicker first end and a thinner second end.
- the increase in thickness from the second end to the first end of the first thermoplastic layer 2 and thus also the increase in thickness from the second end to the first end of the multi-layer colored thermoplastic intermediate layer 1 is continuously linear in the embodiment shown in FIG.
- the first thermoplastic layer 2 is colorless and the second thermoplastic layer 3 is colored, for example with an ink.
- the second thermoplastic layer 3 is colored green, for example. In principle, however, any other color is also possible, with typical colors for the automobile market being green, blue and gray.
- the first thermoplastic layer 2 and thus also the multi-layered, colored thermoplastic intermediate layer 1 has a wedge angle of 0.5 mrad.
- the first thermoplastic layer 2 is, for example, 0.38 mm thick at its thinner second end and the second thermoplastic layer 3 is 0.38 mm thick. Consequently, in the embodiment shown in FIG. 1, the multilayer colored thermoplastic intermediate layer 1 is 0.76 mm thick at its thinner second end.
- the first thermoplastic layer 2 and the second thermoplastic layer 3 consist, for example, of PVB, the second thermoplastic layer 3 being colored with an ink as described above.
- FIG. 2 a further embodiment of a multi-layer, colored thermoplastic intermediate layer 1 according to the invention is shown in cross section.
- the embodiment shown in FIG. 2 differs from that shown in FIG. 1 only in that the first thermoplastic layer 2 and thus also the multi-layered colored thermoplastic intermediate layer 1 has a plateau in cross section at the thicker first end.
- FIG. 3 a further embodiment of a multilayered colored thermoplastic intermediate layer 1 according to the invention is shown in cross section.
- the embodiment shown in FIG. 3 differs from the one shown in FIG. 1 only in that in the first thermoplastic layer 2 and thus also in the multi-layered, colored thermoplastic intermediate layer 1, the wedge angle extends from the thinner second end to the thicker one first end varies.
- FIG. 4 a further embodiment of a multilayered colored thermoplastic intermediate layer 1 according to the invention is shown in cross section.
- the embodiment shown in FIG. 4 differs from the one shown in FIG. 1 in that the multi-layered, colored thermoplastic intermediate layer 1, in addition to the first thermoplastic layer 2 and the second thermoplastic layer 3, has an acoustically damping layer 4, which is located between the first thermoplastic layer 2 and the second thermoplastic layer 3 is arranged.
- This acoustically damping layer has a constant thickness of 100 ⁇ m (micrometers) in the one shown in FIG. 4, is colorless and contains PVB and plasticizer.
- FIG. 5 a further embodiment of a multilayer colored thermoplastic intermediate layer 1 according to the invention is shown in cross section.
- the embodiment shown in FIG. 5 differs from that shown in FIG. 1 in that the multi-layered, colored thermoplastic intermediate layer 1 has, in addition to the first thermoplastic layer 2 and the second thermoplastic layer 3, a third thermoplastic layer 5 which is colorless and has a wedge-shaped cross section.
- the second thermoplastic layer 3 is arranged between the first thermoplastic layer 2 and the third thermoplastic layer 5.
- the wedge angle of the first thermoplastic layer 2 and the wedge angle of the third thermoplastic layer 5 are that shown in FIG Embodiment, for example, 0.2 mrad each, so that the multi-layered colored thermoplastic intermediate layer 1 in the embodiment shown in FIG.
- the thickness of the first thermoplastic layer 2 is, for example, 0.33 mm and the thickness of the third thermoplastic layer 5, for example, 0.33 mm, in each case at the thinner end.
- the second thermoplastic layer 3 is, for example, an acoustically damping layer with a thickness of 100 ⁇ m, so that a thickness of the multi-layer colored thermoplastic intermediate layer 1 at the thinner second end of 0.76 mm results.
- the first thermoplastic layer 2 and the third thermoplastic layer 5 contain, for example, PVB, and the second thermoplastic layer 3 contains, for example, PVB and plasticizer and a dye.
- FIG. 6 shows the cross section of an embodiment of a composite pane 6 according to the invention.
- This comprises a first pane 7 and a second pane 8, which are connected to one another via a multi-layer, colored thermoplastic intermediate layer 1.
- the multi-layer, colored thermoplastic intermediate layer 1 is constructed as shown in FIG. 1 and thus comprises a first thermoplastic layer 2 and a second thermoplastic layer 3.
- the first pane 7 and the second pane 8 consist, for example made of soda-lime glass and are each 2.1 mm thick.
- the first disk 7 and the second disk 8 it is also possible for the first disk 7 and the second disk 8 to have different thicknesses. In the embodiment shown in FIG. 6, the first disk 7 and the second disk 8 do not have a wedge angle.
- first disk 7 and / or the second disk 8 have a wedge angle, i.e. have a wedge-shaped cross section.
- first pane 7 is the outer pane and the second pane 8 is the inner pane of the composite pane 6.
- first pane 7 is the inner pane and the second pane 8 is the outer pane .
- FIG. 7 shows the cross section of a further embodiment of a composite pane 6 according to the invention. This differs from the embodiment shown in FIG. 6 only in that the multi-layer, colored thermoplastic intermediate layer 1 is constructed as shown in FIG.
- FIG. 8 shows the cross section of a further embodiment of a composite pane 6 according to the invention. This differs from the embodiment shown in FIG. 6 only in that the multi-layer, colored thermoplastic intermediate layer 1 is constructed as shown in FIG.
- the projection arrangement 9 shows the cross section of a projection arrangement 9 according to the invention.
- the projection arrangement 9 comprises a composite pane 6, in particular the windshield of a passenger car, with an upper edge O and a lower edge U and two side edges not shown in FIG. 9.
- the composite pane 6 corresponds to the composite pane 6 shown in FIG.
- the area B which is usually referred to as the HUD area
- images can be generated by the projector 11, which are perceived by an observer 10 (vehicle driver) as virtual images on the side of the laminated pane 6 facing away from him when his eyes close are located within the so-called Eyebox E.
- FIG. 10 shows a flow diagram of an embodiment of a method according to the invention for producing a multilayer, colored thermoplastic intermediate layer 1 according to the invention.
- the embodiment of a method according to the invention shown in FIG. 10 comprises, as first step I, the provision of a colorless first thermoplastic layer 2 with a wedge-shaped cross section.
- the colorless first thermoplastic layer 2 with a wedge-shaped cross section can be provided by extrusion of a wedge-shaped layer.
- the embodiment of a method according to the invention shown in FIG. 10 comprises the provision of a second thermoplastic layer 3 colored with a dye and having an essentially constant thickness by means of extrusion.
- Steps I and II can also be carried out in reverse order.
- a third step III in the embodiment of a method according to the invention shown in FIG. 10, the first thermoplastic layer 2 and the second thermoplastic layer 3 are arranged flat on top of one another.
- the embodiment of a method according to the invention shown in FIG. 10 comprises joining the first thermoplastic layer 2 and the second thermoplastic layer 3 at least in an edge region.
- the connection of the first thermoplastic layer 2 and the second thermoplastic layer 3 at least in one edge area can be done, for example, by heating to a temperature above 40 ° C., for example 80 ° C., or by means of a chemical such as an alcohol, in particular ethanol or isopropanol.
- FIG. 11 shows a flow diagram of a further embodiment of a method according to the invention for producing a multilayer, colored thermoplastic intermediate layer 1 according to the invention.
- step Ha depressions are embossed in at least one of the surfaces of the first thermoplastic layer 2 and in at least one of the surfaces of the second thermoplastic layer 3. If depressions are only embossed in one surface of the first thermoplastic layer 2 and the second thermoplastic layer 3, the first thermoplastic layer 2 and the second thermoplastic layer 3 are preferably arranged flat one above the other in step III so that the embossed surfaces are directly adjacent to one another are arranged.
- the embossed depressions achieve better ventilation in step IV and prevent the multilayered, colored thermoplastic intermediate layer 1 from becoming cloudy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Laminated Bodies (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20168475 | 2020-04-07 | ||
| PCT/EP2021/057676 WO2021204551A1 (de) | 2020-04-07 | 2021-03-25 | Mehrlagige gefärbte zwischenschicht mit keilförmigem querschnitt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4132782A1 true EP4132782A1 (de) | 2023-02-15 |
Family
ID=70227857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21713684.5A Pending EP4132782A1 (de) | 2020-04-07 | 2021-03-25 | Mehrlagige gefärbte zwischenschicht mit keilförmigem querschnitt |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230127785A1 (de) |
| EP (1) | EP4132782A1 (de) |
| CN (1) | CN113811443A (de) |
| WO (1) | WO2021204551A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12071365B2 (en) | 2022-07-08 | 2024-08-27 | Agc Automotive Americas Co. | Glass assembly including a performance-enhancing feature and method of manufacturing thereof |
| US11773011B1 (en) | 2022-07-08 | 2023-10-03 | Agc Automotive Americas Co. | Glass assembly including a conductive feature and method of manufacturing thereof |
| US12424807B2 (en) | 2022-07-08 | 2025-09-23 | Agc Automotive Americas Co. | Method of manufacturing a window assembly with a solderless electrical connector |
| US12090729B2 (en) | 2022-07-08 | 2024-09-17 | Agc Automotive Americas Co. | Glass assembly including an opaque boundary feature and method of manufacturing thereof |
| US12521964B2 (en) | 2023-08-14 | 2026-01-13 | The Boeing Company | Multi-region surfacing film for enhanced adhesion of finishes to thermoplastic surfaces |
| WO2025247762A1 (de) | 2024-05-28 | 2025-12-04 | Saint-Gobain Sekurit France | Verbundschicht für eine verbundscheibe |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562023A (en) | 1981-08-18 | 1985-12-31 | Dynamit Nobel Aktiengesellschaft | Process and apparatus for producing a synthetic resin sheet having a colored band of varying color intensity |
| US5013134A (en) | 1989-09-28 | 1991-05-07 | Hughes Aircraft Company | Ghost-free automotive head-up display employing a wedged windshield |
| US5455103A (en) | 1994-01-24 | 1995-10-03 | Monsanto Company | Rough-surfaced interlayer |
| DE19535053A1 (de) | 1994-10-04 | 1996-04-11 | Volkswagen Ag | Gekrümmte Verbundscheibe |
| DE19611483A1 (de) | 1995-09-21 | 1997-10-02 | Volkswagen Ag | Gekrümmte Verbundscheibe |
| ES2210686T3 (es) * | 1997-07-24 | 2004-07-01 | Saint-Gobain Glass France | Parabrisas de vidrio estratificado destinado a ser utilizado simultaneamente como reflector para sistema hud. |
| EP1233007B1 (de) | 1999-07-01 | 2008-06-18 | Sekisui Chemical Co., Ltd. | Zwischenschicht für Verbundglas |
| JP2007223883A (ja) * | 2005-12-26 | 2007-09-06 | Asahi Glass Co Ltd | 車両用合せガラス |
| WO2007132777A1 (ja) | 2006-05-12 | 2007-11-22 | Sekisui Chemical Co., Ltd. | 合わせガラス用中間膜及び合わせガラス |
| US20080268204A1 (en) | 2007-04-29 | 2008-10-30 | David Paul Bourcier | Multiple layer polymer interlayers having an embossed surface |
| DE102012211729A1 (de) | 2012-07-05 | 2014-01-09 | Bayerische Motoren Werke Aktiengesellschaft | Kamerasystem zum Erfassen der Position eines Fahrers eines Kraftfahrzeugs |
| PL3079901T3 (pl) | 2013-12-12 | 2021-02-08 | Saint-Gobain Glass France | Folia termoplastyczna dla szyby ze szkła wielowarstwowego z nieliniowo-ciągłą wkładką klinową w kierunku pionowym i poziomym |
| US20170003503A1 (en) * | 2013-12-12 | 2017-01-05 | Saint-Gobain Glass France | Thermoplastic film for a laminated-glass pane having a non-linear continuous wedge insert in the vertical direction in some sections |
| US10414129B2 (en) * | 2015-04-08 | 2019-09-17 | Sekisui Chemical Co., Ltd. | Interlayer for laminated glass and laminated glass |
| WO2018081570A1 (en) | 2016-10-28 | 2018-05-03 | Kuraray America, Inc. | Wedge-shaped multilayer interlayer and glass laminate |
| KR20200138191A (ko) * | 2018-03-29 | 2020-12-09 | 세키스이가가쿠 고교가부시키가이샤 | 접합 유리용 중간막, 접합 유리 및 헤드업 디스플레이 시스템의 제조 방법 |
| CN110876263A (zh) * | 2018-07-02 | 2020-03-10 | 法国圣戈班玻璃厂 | 具有声阻尼性能的楔形多层中间层 |
| WO2020094419A1 (de) * | 2018-11-05 | 2020-05-14 | Saint-Gobain Glass France | Verbundscheibe für ein head-up-display |
-
2021
- 2021-03-25 CN CN202180001713.8A patent/CN113811443A/zh active Pending
- 2021-03-25 EP EP21713684.5A patent/EP4132782A1/de active Pending
- 2021-03-25 WO PCT/EP2021/057676 patent/WO2021204551A1/de not_active Ceased
- 2021-03-25 US US17/801,666 patent/US20230127785A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20230127785A1 (en) | 2023-04-27 |
| CN113811443A (zh) | 2021-12-17 |
| WO2021204551A1 (de) | 2021-10-14 |
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