Extrusion die with removable plate for dispensing profile bars

Abstract

The invention relates to an extrusion die (1) for dispensing profile strips, comprising:-an extrusion die body (2) with an extrusion die head (3), the extrusion die head (3) having a U-shaped opening (4) and comprising a leg (5), the leg (5) delimiting the U-shaped opening (4) on one side and comprising a removable plate (6) having a first surface (7) and a second surface (8), and the first surface (7) of the removable plate (6) delimits the U-shaped opening (4), and-at least three extrusion die openings (9, 10, 11, 12) arranged in the extrusion die head (3). At least one extrusion die opening (9) is adjacent to the leg (5) and at least one extrusion die opening (11) is arranged in a recess in the extrusion die head (3).

Description

Technical Field

[0001] This invention relates to an extrusion die, an extrusion apparatus, an extrusion method, and the use of the extrusion die. Background Technology

[0002] The production of seals for various vehicle components is crucial in the automotive industry. In particular, vehicle windows must be fitted with seals before being installed in designated areas of the vehicle body. Commonly used seals include polymers such as polyurethane, polyolefins, polysulfides, polyepoxides, natural rubber, nitrile rubber, styrene-butadiene rubber, ethylene propylene diene monomer (EPDM), RTV (room temperature vulcanizing) silicone rubber, HTV (high temperature vulcanizing) silicone rubber, peroxide vulcanizing silicone rubber, addition vulcanizing silicone rubber, polyacrylates, and / or thermoplastic elastomers. These seals manage water and prevent moisture ingress. Furthermore, they prevent the gradual accumulation of disturbing driving noises in the passenger compartment, such as horn noise.

[0003] Another important function is to place the glass pane into a designated recess in the vehicle body in a stress-free, reproducible, and stable manner. Established methods for producing seals for window panes involve extruding a polymer mass (e.g., polyurethane) and subsequently curing it into a profile, or, when using thermoplastic materials, cooling it. A primer may also be applied as a preparatory step, if necessary. Profile formation occurs either at the molecular level, such as through active polymerization, chain polymerization, condensation polymerization, or addition polymerization, or, in the case of thermoplastic elastomers, through heating followed by cooling. To improve elastic properties, polymer crosslinking can be implemented, for example, by increasing temperature, humidity, or adding oxygen. To improve installation in the vehicle body and increase stability and sealing, profiles often include a support lip (sealing lip, centered). These lips can be produced simultaneously as part of the profile using appropriately shaped extrusion dies. Depending on the window pane geometry, the position, size, and shape of the profile can vary.

[0004] It is desirable to provide windows that include window glass with seals (wherein the seals are flush with the surface of the window glass). Firstly, such windows are aesthetically advantageous, and secondly, they prevent the accumulation of dirt that could build up in the gap between the seals and the window glass in cases of non-flush installation.

[0005] EP2799201A1 discloses a method and mold for producing a window glass assembly including window glass and a seal, wherein the seal can be flush with the surface of the window glass. In this production process, a low-viscosity composition is used to form the seal, which is poured into an open or semi-open tool. Due to the use of the low-viscosity composition, complex machine design and an equally complex production process are required.

[0006] EP 0 707 937 A1 discloses an apparatus for extruding a polymer frame onto a plate.

[0007] US 5,057,265 A discloses a method for producing spacers for windshield mounts.

[0008] EP 0 493 069 B1 discloses a plate with a frame.

[0009] JP H10 58513 A discloses the production of a window with a frame made of synthetic resin. Summary of the Invention

[0010] Therefore, the present invention is based on the purpose of providing an extrusion die that can be used to produce glass window units simply and at low cost, the glass window units including window glass and a seal, wherein the seal terminates flush with the surface of the window glass.

[0011] According to the present invention, the object of the invention is achieved by the extrusion die according to claim 1. Preferred embodiments can be seen in the dependent claims. The present invention also relates to an extrusion apparatus including an extrusion die, an extrusion method using the extrusion apparatus, and the use of an extrusion die for extruding profile strips.

[0012] The extrusion die for distributing contour strips according to the present invention comprises: - An extrusion die body with an extrusion die head. The extrusion die head has a U-shaped opening and includes a support leg, wherein the support leg restricts the U-shaped opening on one side and includes a removable plate having a first surface and a second surface, wherein the first surface of the removable plate restricts the U-shaped opening. - At least three extrusion die openings are arranged in the extrusion die head, wherein at least one extrusion die opening is adjacent to the support leg, and at least one extrusion die opening is arranged in a recess in the extrusion die head.

[0013] According to the invention, the extrusion die is adapted to dispense profile strips. This means that, in the extrusion method, a polymer can be formed into profile strips via an extrusion die according to the invention. According to the invention, after the polymer has cured, the extruded profile strips can be used as seals for glass windows, particularly vehicle windows. Curing can occur through a chemical reaction within the dispensed polymer itself, through the absorption of moisture from the air, or through physical changes (such as phase changes due to cooling).

[0014] The extrusion die according to the invention comprises an extrusion die body with an extrusion die head. For the purposes of this invention, "extrusion die head" is understood to be a portion of the extrusion die body from which the extrudate emerges during the extrusion process. According to the invention, the extrusion die head has at least three extrusion die openings.

[0015] In a preferred embodiment of the invention, the extrusion die body includes a connecting element on a first side and an extrusion die head on a second side. The connecting element is designed to connect the extrusion die to a block conveying device. The connection between the connecting element and the block conveying device can be, for example, a screw connection or a plug connection. The extrusion die body can be permanently connected to the connecting element or formed as a single piece with the connecting element. The connecting element may have grooves and locating pins and can be fastened to an optionally provided robot (described below) by means of a nut.

[0016] The extrusion die body preferably comprises at least one metal selected from the following: iron, chromium, cobalt, nickel, titanium, manganese, aluminum, niobium, tungsten, molybdenum, and vanadium. The extrusion die body is particularly preferably made of steel. According to another embodiment, the extrusion die body comprises a temperature-stable plastic material.

[0017] For example, 3D printing or injection molding can be used to produce extrusion molds.

[0018] According to the invention, the extrusion die head has a U-shaped opening. The U-shaped opening is a recess within the extrusion die head itself and is distinct from the extrusion die opening. Therefore, the extrusion die head includes a portion with a bend adjacent to the bend of the U-shaped opening. The U-shaped opening is adapted to receive a window glass with its edges. This means that the window glass is arranged in the U-shaped opening such that the side edges of the window glass are aligned along the direction of the bend of the U-shaped opening. In other words, the U-shaped opening surrounds the window glass.

[0019] According to the present invention, the extrusion die head includes a leg that restricts a U-shaped opening on one side. Preferably, the leg and the extrusion die head are formed as a single piece. For the purposes of the invention, a "leg" is understood to be part of the extrusion die head having a larger extension along one spatial direction than along the other two spatial directions. The spatial direction of the larger extension is preferably parallel to the straight portion of the U-shaped opening.

[0020] According to the invention, the leg includes a removable plate. Within the meaning of this invention, "removable" means that the plate can be easily removed from its position in the leg. Specifically, the removable plate is not formed as a single piece with the leg. The removable plate has a first surface, a second surface, and circumferential side edges between these surfaces, wherein the first surface of the removable plate defines a U-shaped opening in the extrusion die head. The first surface of the removable plate is adapted to contact a window glass surface. This contact can easily produce a profile strip that terminates flush with the window glass surface, which contacts the first surface of the removable plate. For the purposes of this invention, "flush" means that the corresponding portions are arranged in a plane. Specifically, the first surface of the removable plate represents the contact surface between the window glass and the extrusion die in the extrusion process. Contact between the first surface of the removable plate and the window glass surface is maintained throughout the application of the profile strip, such that the profile strip terminates flush with the window glass surface in the entire area it has been applied to. This also means that, due to the execution of the extrusion process, the window glass surface in contact with the first surface of the removable plate does not have a profile strip.

[0021] Because the panel is designed to be removable, it can be easily replaced after a period of use. This can be advantageous, for example, due to wear or contamination of the removable panel. Since the extrusion die only contacts the window glass via the first surface of the removable panel, wear primarily affects this area. Therefore, after a period of use, it is sufficient to replace only the removable panel, without the need to replace the entire extrusion die. Thus, the use of the extrusion die according to the invention allows for the simple and cost-effective production of contour strips on window glass.

[0022] Furthermore, according to one embodiment, the removable panel can be separated from the remainder of the extrusion die, thereby allowing different materials to be used for the removable panel and the remainder of the extrusion die. Preferably, a harder material than that used for the remainder of the extrusion die is used for the removable panel, because using a hard material (such as hard metal) can easily prevent scratches on the window glass surface in contact with the removable panel during the extrusion process.

[0023] In a preferred embodiment, the first and second surfaces of the removable plate each have a width and length of 8 mm to 12 mm, preferably 9 mm to 11 mm, and more preferably 9.5 mm to 10.5 mm. Preferably, the first and second surfaces of the removable plate each represent a square area. In a preferred embodiment, the removable plate has a height of 1 mm to 3 mm, more preferably 1.5 mm to 2.5 mm, along its side edges.

[0024] Preferably, the removable plate is arranged in a depression within the leg. This depression allows the removable plate to be advantageously held within the leg. According to another preferred embodiment, the depression is a dovetail groove. Preferably, the removable plate is inserted into the leg against the pushing direction. The "pushing direction" is the direction along which the extrusion die moves during the extrusion process. By inserting the removable plate into the leg against the pushing direction, it is easy to prevent the removable plate from slipping out of its position in the leg during the extrusion process. Preferably, the leg includes a boundary that contacts the removable plate at least in one region of its side edges. More preferably, the boundary contacts the side edges of the removable plate in a region arranged opposite to the pushing direction. This allows the removable plate to be easily held in place during the extrusion process. In one embodiment, the boundary comprises at least one cuboid, preferably at least two cuboids.

[0025] The removable panel preferably comprises at least one metal selected from the group consisting of iron, chromium, cobalt, nickel, titanium, manganese, aluminum, niobium, tungsten, molybdenum, tantalum, and vanadium. More preferably, the removable panel is made of a metal. Particularly preferably, the removable panel is made of a hard metal. A hard metal is a composite material in which at least one hard material, present in the form of small particles, is held together by a metal matrix. The hard material is preferably at least one selected from tungsten carbide, titanium carbide, titanium nitride, niobium carbide, tantalum carbide, and vanadium carbide. The metal of the hard metal is preferably at least one selected from cobalt, nickel, and molybdenum. By using a hard metal, scratches on the window glass surface in contact with the removable panel during the extrusion process can be easily avoided. According to another embodiment, the removable panel comprises a temperature-stable plastic material.

[0026] In a preferred embodiment, the extrusion die head further includes a fastening device on which the removable plate is arranged in the legs. The fastening device makes it particularly easy to hold the removable plate in its position in the legs during the extrusion process and easily ensures contact between the first surface of the removable plate and the window glass surface during the extrusion process. Preferably, the fastening device is designed such that when the first surface of the removable plate contacts the window glass surface, the fastening device applies pressure to a second surface of the removable plate. By applying pressure, good contact between the first surface of the removable plate and the window glass surface can be easily and continuously achieved during the extrusion process, thereby facilitating the formation of a profile strip that terminates flush with the window glass surface, which contacts the first surface of the removable plate.

[0027] In one embodiment, the fastening device includes a ball and a cutout, wherein the ball is partially disposed within the cutout such that it protrudes from the cutout and contacts a second surface of the removable plate. Because it is only partially disposed within the cutout, the ball can apply pressure to the second surface of the removable plate when the first surface of the removable plate is brought into contact with the window glass surface during the extrusion method, thereby easily achieving good contact between the first surface of the removable plate and the window glass surface. The cross-section of the cutout is preferably circular in a plan view. More preferably, the cutout has a cylindrical shape. The cutout in which the ball is partially disposed is preferably formed in a recess in which the removable plate is preferably disposed in a leg. Preferably, a spring is disposed below the ball, which pushes the ball upward. "Below the ball" here means the side of the ball facing away from the removable plate. More preferably, the fastening device is a ball pressure member.

[0028] According to the present invention, the extrusion die includes at least three extrusion die openings. In one embodiment of the invention, the extrusion die includes at least four extrusion die openings. The number of extrusion die openings is variable and depends on the desired shape of the profile strip, provided that at least three extrusion die openings are present.

[0029] Preferably, at least three extrusion die openings are arranged in the extrusion die head such that they open in the opposite direction to the feed direction. This facilitates the continuous extrusion of profile strips with uniform contours.

[0030] According to the invention, at least one extrusion die opening is adjacent to the support leg. Preferably, the at least one extrusion die opening opens at least to a region of the extrusion die head adjacent to the first surface of the removable plate. This arrangement facilitates ensuring that the profile terminates flush with the window glass surface, which contacts the first surface of the removable plate during the extrusion process.

[0031] In one embodiment, at least one extrusion die opening is arranged in an area of ​​the extrusion die head that is located on the side of the U-shaped opening opposite the support leg. This arrangement allows the profile strip to be applied to the window glass surface opposite to the window glass surface where the profile strip terminates flush with it. This ensures a good seal for the window, for example, when the window is installed in a car body.

[0032] According to the invention, at least one extrusion die opening is arranged in a recess in the extrusion die head. This facilitates the formation of a lip in the profile strip. For example, when a glass window is installed in a car body, the lip can provide an advantageous seal.

[0033] Preferably, at least one extrusion die opening is arranged in a region of the bend in the extrusion die head, adjacent to the bend of the U-shaped opening. As a result, extrudates exiting through this opening can be easily combined with extrudates from other extrusion die openings.

[0034] In one embodiment of the invention, each of the extrusion die openings has a minimum opening area of ​​at least 1 mm². In one embodiment, each of the extrusion die openings has a maximum opening area of ​​at most 100 mm².

[0035] According to one embodiment, the extrusion die further includes at least two feed channels. According to another embodiment of the invention, the extrusion die includes at least three feed channels. In yet another embodiment of the invention, the extrusion die includes at least four feed channels.

[0036] Preferably, at least two feed channels are arranged in a connecting element located on the first side of the extrusion die body. For a total of four feed channels, these feed channels can be arranged in two rows one after the other.

[0037] The shape of the cross-section of at least two feed channels is not particularly restricted. For example, the shape of the cross-section of at least two feed channels corresponds to a circular shape.

[0038] In one embodiment of the invention, each feed channel extends through the extrusion die body to the corresponding extrusion die opening.

[0039] In one embodiment, the extrusion die has a number of individual feed channels equal to the number of extrusion die openings, wherein, in particular, the feed channels on a first side of the extrusion die body have a circular cross-section, and the cross-section changes along the extrusion die body to the cross-sectional area of ​​the extrusion die openings. For example, the extrusion die may have four extrusion die openings. In this case, the extrusion die thus expediently has four feed channels that extend through the extrusion die body separately from each other. The shape of the channels changes from the inlet shape at the feed channel inlet to the shape of the extrusion die opening.

[0040] The opening area of ​​each feed channel is not particularly limited and can be appropriately selected by those skilled in the art depending on the polymer used and the desired flow rate.

[0041] Preferably, the extrusion die head includes a front recess having the shape of the desired profile and extending in the plan view of the extrusion die head from the foremost region of the extrusion die head along the advance direction to an area of ​​the extrusion die head in which at least three extrusion die openings are arranged. This allows the resulting extrudate to easily conform to the desired profile.

[0042] The present invention further includes an extrusion apparatus comprising: - An extrusion die according to the present invention, and - A bulk conveying device that is connected to the extrusion die. The extrusion device is configured to receive a window glass having a first surface, a second surface, and a side edge disposed between the first surface and the second surface in a U-shaped opening of an extrusion die head, such that the first surface of the removable plate contacts the first surface of the window glass.

[0043] The embodiments described above in conjunction with the extrusion die according to the invention are also applicable in the same manner to the extrusion apparatus according to the invention.

[0044] The bulk conveying device included in the extrusion apparatus is not particularly limited, as long as it is suitable for conveying bulk (i.e., polymer bulk). For example, the bulk conveying device can be an extruder, a piston feeder, or a gear pump. The corresponding devices are well known to those skilled in the art.

[0045] According to the present invention, the block conveying device is connected to the extrusion die. Preferably, the block conveying device is connected to the extrusion die via the connecting element described above.

[0046] According to the present invention, the extrusion apparatus is configured to receive a window glass having a first surface, a second surface, and a side edge disposed between the first and second surfaces in a U-shaped opening of an extrusion die head, such that the first surface of a removable plate contacts the first surface of the window glass. By contacting the first surface of the removable plate with the first surface of the window glass, a profile strip terminating flush with the first surface of the window glass can be formed. During the extrusion process, the first surface of the removable plate contacts the first surface of the window glass. In a preferred embodiment, during the extrusion process, the first surface of the removable plate presses against the first surface of the window glass, thus ensuring good contact during the extrusion process. Pressure can be applied, for example, using the aforementioned fastening device.

[0047] Preferably, during the extrusion process, at least 60%, more preferably at least 65%, and even more preferably at least 70% of the first surface of the removable plate comes into contact with the first surface of the window glass. This ensures good contact during the extrusion process.

[0048] Preferably, during the extrusion process, at most 95%, more preferably at most 90%, and even more preferably at most 85% of the first surface of the removable plate is in contact with the first surface of the window glass. This facilitates the production of a profile strip that terminates flush with the first surface of the window glass. Additionally, the surface of the removable plate that protrudes beyond the side edges of the window glass can be used as a flow surface for the polymer being extruded. If the first surface of the removable plate is in complete (i.e., 100%) contact with the first surface of the window glass, it will be more difficult to achieve flush formation of the profile strip. In that case, the side edges of the removable plate can terminate flush with the side edges of the window glass to achieve flush formation of the profile strip.

[0049] In a preferred embodiment, during the extrusion process, the removable plate protrudes beyond the side edge of the window glass by at least 2 mm, preferably at least 3 mm.

[0050] A window slab that can be arranged in the extrusion apparatus according to the invention comprises a first surface, a second surface, and a side edge disposed between the first and second surfaces. The window slab is preferably made of glass, particularly preferably of soda-lime glass, as is customary for window slabs. However, the window slab may also be made of another type of glass, such as quartz glass, borosilicate glass, or aluminosilicate glass, or of a rigid, transparent plastic, such as polycarbonate or polymethyl methacrylate.

[0051] The thickness of the window glass can vary widely and can be adapted to the requirements of individual cases. If the window glass is formed as a single piece of glass, it preferably has a thickness of 0.5 mm to 5 mm, particularly preferably 1 mm to 3 mm, and quite particularly preferably 1.6 mm to 2.1 mm.

[0052] In a preferred embodiment of the present invention, the window glass is laminated window glass, which comprises at least the following components in the following order: - Exterior window glass, which has an outer surface and an inner surface. - Thermoplastic interlayer, and - Interior window glass, which has an outer surface and an inner surface. The outer surface of the outer window glass corresponds to the first surface of the window glass.

[0053] As described above, the outer window glass and the inner window glass each have an outer surface (i.e., the outer surface), an inner surface (i.e., the inner surface), and a circumferential side edge extending between them. For the purposes of this invention, the outer surface refers to the main surface intended to face the external environment when installed. For the purposes of this invention, the inner surface refers to the main surface intended to face inward when installed. The inner surface of the outer window glass and the outer surface of the inner window glass face each other in the laminated window glass.

[0054] The surface of laminated window glass is typically referred to as follows: The outer surface of the exterior window glass is called Side I. The inner surface of the exterior window glass is called Side II. The outer surface of the interior window glass is called Side III. The inner surface of the interior window glass is called Side IV.

[0055] According to a preferred embodiment of the invention, the outer surface of the exterior window glass corresponds to the first surface of the window glass. This allows for the production of a profile strip that terminates flush with the outer surface of the exterior window glass.

[0056] In the context of this invention, when laminated window glass in a window opening of a vehicle or building is intended to separate the interior space from the external environment, the window glass facing the interior space (vehicle interior) is referred to as "interior window glass." Exterior window glass refers to the window glass facing the external environment.

[0057] The exterior and interior window glass are preferably made of glass, particularly preferably of soda-lime glass, as is customary for window glass. However, the window glass may also be made of other types of glass, such as quartz glass, borosilicate glass, or aluminosilicate glass, or of rigid, transparent plastics, such as polycarbonate or polymethyl methacrylate. The window glass may be transparent, or it may be tinted or colored. If laminated window glass is used as windshield, the exterior and interior window glass should have sufficient light transmittance in the central viewing area, preferably at least 70% in the primary viewing area A, according to ECE-R43. The exterior and interior window glass are preferably curved, i.e., they have a curved portion.

[0058] The thickness of the exterior and interior window glass can vary widely, and thus adapt to the requirements of individual cases. The exterior and interior window glass preferably each have a thickness of 0.5 mm to 5 mm, particularly preferably 1 mm to 3 mm, and very particularly preferably 1.6 mm to 2.1 mm. For example, the exterior window glass has a thickness of 2.1 mm, and the interior window glass has a thickness of 1.6 mm. However, the exterior window glass, or particularly the interior window glass, can also be, for example, thin glass with a thickness of 0.55 mm.

[0059] Laminated window glass includes a thermoplastic interlayer. Preferably, the thermoplastic interlayer contains at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), thermoplastic polyurethane (PU), or mixtures or copolymers (e.g., block copolymers) or derivatives thereof, particularly preferably containing polyvinyl butyral (PVB), very particularly preferably containing polyvinyl butyral (PVB), and additives known to those skilled in the art, such as plasticizers.

[0060] The thickness of the thermoplastic interlayer is preferably 0.2 mm to 2 mm, particularly preferably 0.3 mm to 1 mm, for example 0.38 mm or 0.76 mm.

[0061] In one embodiment, the extrusion apparatus includes a support. According to a preferred embodiment, the window glass rests on the support during the extrusion process. The support is not particularly limited, as long as it is suitable for supporting and / or securing the window glass during the extrusion process. Supports known to those skilled in the art can be used. Preferably, the support includes a worktable. More preferably, a frame adapted to hold the window glass is arranged on the worktable. Particularly preferably, in the contact area with the window glass, the frame has a bend corresponding to the curvature of the window glass.

[0062] The extrusion apparatus preferably includes a robot for holding (and guiding) the extrusion die. Furthermore, control, particularly regulation, of the delivery rate of the extruded polymer can be provided. Additionally, sensors can be provided to detect the position and / or orientation of the window glass and / or its components.

[0063] In one embodiment, the extrusion apparatus includes a compensation device arranged between a preferably provided robot and an extrusion die. If the window glass is curved, the compensation device is adapted to compensate for path differences between the robot and the extrusion die caused by curvature tolerances that may exist in the window glass. The compensation device may be, for example, a spring or a device controlled by compressed air.

[0064] The extrusion apparatus according to the invention can be used to produce glass windows, preferably vehicle windows (especially windshields) or building windows, comprising: window glass having a first surface, a second surface, and side edges disposed between the first and second surfaces; and a profile strip disposed on the side edges of the window glass and on the second surface of the window glass, wherein the profile strip is flush with the first surface of the window glass. Preferably, the profile strip includes a lip disposed on a horizontal plane of the second surface of the window glass away from the window glass. The sealing of the glass window is ultimately achieved by curing the polymer forming the extruded profile strip.

[0065] The present invention further includes a method for continuously extruding a profile strip onto a window glass, the method comprising at least: - Provides an extrusion apparatus according to the invention, - Provides window glass having a first surface, a second surface, and side edges disposed between the first surface and the second surface, and - The polymer is applied to the side edges and the second surface of the window glass via the extrusion die of the extrusion device.

[0066] The method according to the invention is also referred to herein as the "extrusion method". According to the invention, extrusion is performed continuously. This means that during this method, the extrusion die moves along the advancing direction, thereby forming the profile strip. When the profile strip is formed along the side edge of a window glass and on a second surface of the window glass using the method according to the invention, the corner geometry of the resulting seal is preferably achieved by corner injection in a subsequent process step.

[0067] The embodiments described above in conjunction with the extrusion die and extrusion apparatus according to the invention are also applicable in the same manner to the method according to the invention. This also includes embodiments of contour strips and window glass.

[0068] Preferably, during the method, the first surface of the removable plate presses against the first surface of the window glass. Pressure can be applied, for example, using the aforementioned fastening device.

[0069] The polymer used in the method according to the invention is not particularly limited, as long as it can be used for extrusion. In particular, it is necessary to maintain the extruded polymer in a specific shape corresponding to the profile strip until it has cured to form the ultimately desired seal. Therefore, at 23°C and a shear rate of 1 / s, the viscosity of the polymer is preferably in the range of 300,000 mPa·s to 10,000,000 mPa·s, more preferably in the range of 600,000 mPa·s to 6,000,000 mPa·s. If the viscosity of the polymer is lower than the values ​​mentioned above, it is difficult to shape the extruded polymer into a specific shape or to maintain that shape until the extruded polymer has cured. On the other hand, if the viscosity is higher than the values ​​mentioned above, the extrusion pressure becomes excessively high.

[0070] In one embodiment of the invention, the polymer includes at least one of the following: polyurethane, polyolefin (such as polyethylene and polypropylene), polysulfide, polyepoxide, natural rubber, nitrile rubber (NBR), styrene-butadiene rubber, ethylene propylene diene monomer (EPDM) rubber, RTV (room temperature vulcanizing) silicone rubber, HTV (high temperature vulcanizing) silicone rubber, peroxide vulcanizing silicone rubber, addition vulcanizing silicone rubber, polyacrylate, silane-modified polymer, and thermoplastic elastomer (TPE).

[0071] The silane-modified polymer consists of a polymer chain, linker groups, and hydrolyzable silane units. Preferably, the polymer chain is one of polyether polyols, polyesters, polycarbonates, polyacrylates, polyolefins, and polyurethanes. The linker groups are preferably one of urethane, alkyl, and urea groups. The crosslinkable silane is preferably a dimethoxymethylsilyl group or a trimethoxysilyl group.

[0072] Thermoplastic elastomers (TPEs) preferably include at least one of the following: TPO (olefin-based thermoplastic elastomers), such as polypropylene (PP) and ethylene propylene diene monomer (EPDM); TPV (thermoplastic vulcanizate); TPU (urethane-based thermoplastic elastomers); and TPS (thermoplastic styrene block copolymers), such as styrene-butadiene-styrene block copolymers (SBS).

[0073] Preferably, the polymer is polyurethane. Particularly preferably, the polymer is a polyurethane having a viscosity in the range of 300,000 mPa·s to 10,000,000 mPa·s, more preferably in the range of 600,000 mPa·s to 6,000,000 mPa·s, at 23°C and a shear rate of 1 / s. By using this polymer in the method according to the invention, seals terminating flush with the surface of window glass can be produced simply and at low cost. The viscosity can be determined using a viscometer as follows: Viscometer Viscolab MC 10, system Z-5 DIN, at 23°C and a shear rate of 1 / s; ramp measurement: 2 minutes 0 to 1 / s; 1 minute, at 1 / s; 2 minutes 1 to 0 / s; measurement: 1. Value of the reverse curve at 1 / s.

[0074] The invention further includes the use of the extrusion die according to the invention for extruding profiles onto window glass for the production of vehicle windows or building windows. In a particularly preferred embodiment, the vehicle window is a windshield.

[0075] Various embodiments of the present invention may be implemented individually or in any combination. In particular, without departing from the scope of the invention, the features mentioned above and explained below may be used not only in the specified combinations, but also in other combinations or individually. Attached Figure Description

[0076] The invention will be explained in more detail with reference to the accompanying drawings and exemplary embodiments. The drawings are schematic and not drawn to scale. The drawings do not limit the invention in any way. In the drawings: Figure 1 A view of an embodiment of the extrusion die 1 according to the present invention is shown. Figure 2 It shows Figure 1 Another view of an embodiment of the extrusion die 1 according to the present invention is shown. Figure 3 A view of an embodiment of the extrusion apparatus 100 according to the present invention is shown. Figure 4 It shows Figure 3 Another view of an embodiment of the extrusion apparatus 100 according to the present invention is shown. Figure 5 An illustration of an embodiment of the method according to the invention for continuously extruding a profile strip onto a window glass 200, and... Figure 6 A view of a glass window 400 that can be produced using the present invention is shown. Detailed Implementation

[0077] Figure 1 and Figure 2 A view of an embodiment of an extrusion die 1 according to the present invention is shown. The extrusion die 1 includes: an extrusion die body 2 with an extrusion die head 3, wherein the extrusion die head 3 has a U-shaped opening 4 and includes a support leg 5, wherein the support leg 5 restricts the U-shaped opening 4 on one side and includes a removable plate 6 having a first surface 7 and a second surface 8, wherein the first surface 7 of the removable plate 6 restricts the U-shaped opening 4; and four extrusion die openings 9, 10, 11, and 12 arranged in the extrusion die head 3, wherein one extrusion die opening 9 is adjacent to the support leg 5. An extrusion die opening 10 is arranged in a region of the extrusion die head 3 such that it is located on the side of the U-shaped opening 4 opposite to the support leg 5. An extrusion die opening 11 is arranged in a recess in the extrusion die head 3 such that it is adapted to form a lip of a profile strip. An extrusion die opening 12 is arranged between the extrusion die openings 9 and 10 such that extrudates exiting through this extrusion die opening can easily combine extrudates from the extrusion die openings 9 and 10 with each other.

[0078] According to an embodiment, four extrusion die openings 9, 10, 11, and 12 are arranged in the extrusion die head 3 such that they open in a direction opposite to the propulsion direction V.

[0079] Preferably, the extrusion die body 2 includes a connecting element (not shown) on a first side and an extrusion die head 3 on a second side.

[0080] The extrusion die head 3 shown in the embodiment further includes a fastening device 13 on which a removable plate 6 is disposed in a leg 5. The fastening device 13 includes a ball 14 and a cutout 15, wherein the ball 14 is partially disposed in the cutout 15 such that it protrudes from the cutout 15, and the ball 14 contacts a second surface 8 of the removable plate 6.

[0081] In the illustrated embodiment, the extrusion die body 2 further includes four feed channels 16, 17, 18, and 19. The four feed channels 16, 17, 18, and 19 are arranged in two rows, one after the other. Each of the feed channels 16, 17, 18, and 19 extends through the extrusion die body 2 to a corresponding one of the extrusion die openings 9, 10, 11, and 12.

[0082] In one embodiment, the removable plate 6 is arranged in a recess in the leg 5. As per [reference to another embodiment] Figure 2 As shown in the embodiment, the removable plate 6 is inserted into the support leg 5 in the opposite direction of propulsion V. The support leg 5 according to the embodiment includes two regions that contact the boundary 20 of the removable plate at its side edges. The boundary 20 contacts the side edges of the removable plate 6 in a region arranged opposite to the propulsion direction V. In the illustrated embodiment, the boundary comprises two cuboids that contact the removable plate 6 at their corner regions on the side edges.

[0083] Figure 3 and Figure 4 A view of an embodiment of the extrusion apparatus 100 according to the present invention is shown. In particular, Figure 3 An embodiment of an extrusion apparatus 100 is shown before the polymer or extrudate exits through the extrusion die openings 9, 10, 11, 12. However, Figure 4 An embodiment of the extrusion apparatus 100 is shown when the extrudate has emerged from the openings 9, 10, 11, and 12 of the extrusion die and correspondingly formed a profile stripe. For simplicity, the upper region of the extrusion die 1 is not shown and is indicated only by dashed lines.

[0084] The extrusion apparatus 100 includes, according to an embodiment of the invention, a... Figure 1 and Figure 2 The extrusion die 1 and the block conveying device (not shown) connected to the extrusion die 1 are shown. A window glass having a first surface, a second surface, and a side edge disposed between the first and second surfaces is disposed with its edges in the U-shaped opening 4 of the extrusion die head 3. The first surface 7 of the removable plate 6 contacts the first surface of the window glass.

[0085] In the illustrated embodiment, the window glass is laminated window glass 300, which comprises, in the following order: - Window glass 301, which has an outer surface I and an inner surface II, - Thermoplastic interlayer 302, and - Interior window glass 303, which has an outer surface III and an inner surface IV, The outer surface I of the outer window glass 301 corresponds to the first surface of the window glass. Therefore, the outer surface I of the outer window glass 301 is in contact with the first surface 7 of the removable panel 6.

[0086] Preferably, the block conveying device (not shown) is connected to the extrusion die 1 via a preferably provided connecting element (not shown).

[0087] In the illustrated embodiment, the extrusion device 100 includes a support 101 on which the window glass rests.

[0088] Figure 3 and Figure 4 The fastening device 13 is shown in cross-section. The arrow below the ball 14 indicates that the ball 14 applies pressure to the second surface 8 of the removable plate 6. In the illustration, the ball 14 protrudes into the removable plate 6. However, this is only intended to illustrate the pressure applied by the ball 14 and does not necessarily show the material deformation of the removable plate 6. The ball 14 itself can experience pressure from below, causing it to apply pressure to the second surface 8 of the removable plate 6. Preferably, this pressure is applied by a spring arranged below the ball 14.

[0089] Figure 5 An illustration of an embodiment of a method according to the invention for continuously extruding a profile strip onto a window glass 200 is shown. The method according to the invention for continuously extruding a profile strip onto a window glass 200 includes at least: - Provides an extrusion apparatus 100 according to the present invention. - Provides window glass 200, the window glass having a first surface 201, a second surface 202, and a side edge 203 disposed between the first surface 201 and the second surface 202, and - The polymer is applied to the side edge 203 and the second surface 202 of the window glass 200 via the extrusion die 1 of the extrusion device 100.

[0090] For simplicity, the upper region of the extrusion die 1 and the block conveying device are not shown.

[0091] During this method, the extrusion die 1 moves along the advancing direction V, thereby forming the profile strip.

[0092] Figure 6 A view is shown of a glass window 400 that can be produced using the present invention. The glass window 400 includes: laminated window glass 300, which comprises, in the following order: - Window glass 301, which has an outer surface I and an inner surface II, - Thermoplastic interlayer 302, and - Interior window glass 303, which has an outer surface III and an inner surface IV, and A profile strip 401 is disposed on the side edge 304 of the laminated window glass 300 and on the inner surface IV of the inner window glass 303, wherein the profile strip 401 is flush with the outer surface I of the outer window glass 301. The profile strip 401 includes a lip 402 disposed on the horizontal plane of the inner surface IV of the inner window glass 303 away from the laminated window glass 300.

[0093] List of reference numerals 1. Extrusion die 2. Extrusion die body 3 Extrusion die head 4 U-shaped openings 5 legs 6 Removable panels 7. First surface of the removable plate 8. Second surface of the removable plate 9. Extrusion die opening 10 Extrusion die opening 11 Extrusion die opening 12 Extrusion die opening 13 Fastening devices 14 spheres 15 resection port 16 Feeding Channel 17 Feeding channel 18 Feeding Channel 19 Feeding Channel 20 Boundaries 100 Extrusion Unit 101 Support Component 200 window glass 201 First Surface 202 Second Surface 203 Side Edge 300-layer laminated window glass 301 exterior window glass 302 Thermoplastic Interlayer 303 interior window glass 304 side edge I. Outer surface of the window glass II. Inner surface of exterior window glass III. Outer surface of interior window glass IV. Inner surface of the inner window glass 400 glass windows 401 Outline Strip 402 Lip Edge V. Direction of advancement.

Claims

1. An extrusion die (1) for distributing contour strips, the extrusion die comprising: - Extrusion die body (2) with extrusion die head (3). The extrusion die head (3) has a U-shaped opening (4) and includes a support leg (5), wherein the support leg (5) restricts the U-shaped opening (4) on one side and includes a removable plate (6) having a first surface (7) and a second surface (8), wherein the first surface (7) of the removable plate (6) restricts the U-shaped opening (4), and - At least three extrusion die openings (9, 10, 11, 12) are arranged in the extrusion die head (3), wherein at least one extrusion die opening (9) is adjacent to the support leg (5), and at least one extrusion die opening (11) is arranged in a recess in the extrusion die head (3).

2. The extrusion die (1) according to claim 1, wherein, The removable plate (6) is arranged in the dovetail groove in the leg (5).

3. The extrusion die (1) according to claim 1 or 2, wherein, The extrusion die head (3) further includes a fastening device (13) on which the removable plate (6) is arranged in the leg (5).

4. The extrusion die (1) according to claim 3, wherein, The fastening device (13) includes a ball (14) and a cutout (15), wherein the ball (14) is partially disposed in the cutout (15) such that it protrudes from the cutout (15), and the ball (14) contacts the second surface (8) of the removable plate (6).

5. The extrusion die (1) according to any one of claims 1 to 4, wherein, At least one extrusion die opening (10) is arranged in such an area of ​​the extrusion die head (3) that the area is located on the side of the U-shaped opening (4) opposite to the leg (5).

6. The extrusion die (1) according to any one of claims 1 to 5, wherein, The extrusion die (1) further includes at least two feed channels (16, 17, 18, 19).

7. The extrusion die (1) according to claim 6, wherein, The extrusion die (1) includes at least three feed channels (16, 17, 18, 19), and each feed channel (16, 17, 18, 19) extends through the extrusion die body (2) to the corresponding extrusion die opening (9, 10, 11, 12).

8. The extrusion die (1) according to any one of claims 1 to 7, wherein, The removable plate (6) is made of metal.

9. An extrusion apparatus (100) comprising: - The extrusion die (1) according to any one of claims 1 to 8, and - A block conveying device connected to the extrusion die (1). The extrusion device (100) is configured to receive a window glass (200) having a first surface (201), a second surface (202) and a side edge (203) arranged between the first surface (201) and the second surface (202) in a U-shaped opening (4) of the extrusion die head (3) such that the first surface (7) of the removable plate (6) contacts the first surface (201) of the window glass (200).

10. The extrusion apparatus (100) according to claim 9, wherein, The window glass (200) is laminated window glass (300), which comprises at least the following in order: - The exterior window glass (301) has an outer surface (I) and an inner surface (II). - Thermoplastic interlayer (302), and - Interior window glass (303) having an outer surface (III) and an inner surface (IV). Wherein, the outer surface (I) of the outer window glass (301) corresponds to the first surface (201) of the window glass (200).

11. A method for continuously extruding a profile strip onto a window glass (200), the method comprising at least: - Provide an extrusion apparatus (100) according to claim 9 or 10. - Provides window glass (200) having a first surface (201), a second surface (202), and a side edge (203) disposed between the first surface (201) and the second surface (202), and - The polymer is applied to the side edge (203) of the window glass (200) and the second surface (202) of the window glass (200) via the extrusion die (1) of the extrusion device (100).

12. The method according to claim 11, wherein, The polymer is polyurethane.

13. The method according to claim 11 or 12, wherein, At 23°C and a shear rate of 1 / s, the viscosity of the polymer, as measured by a viscometer, is in the range of 300,000 mPa·s to 10,000,000 mPa·s, more preferably in the range of 600,000 mPa·s to 6,000,000 mPa·s.

14. The method according to any one of claims 11 to 13, wherein, The first surface (7) of the removable panel (6) presses against the first surface (201) of the window glass (200).

15. The use of an extrusion die (1) according to any one of claims 1 to 8 for extruding a profile strip onto a window glass (200) for the production of vehicle windows, particularly windshields, or building windows.

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