Extrusion nozzle and method for discharging extruded profiles

Abstract

The invention relates to an extrusion nozzle (1) for discharging extruded profiles, comprising:-an extrusion nozzle body (2), the extrusion nozzle body (2) having in an extension direction (X) an extrusion head (3) at a first end (2a) and a connecting element at a second end, and the extrusion head (3) being arranged on a lower surface (4) perpendicular to the extension direction (X) and comprising a bulge (5), the invention relates to an extrusion head (3) comprising:-a bulge (5) arranged in the extension direction (X) and adjacent to the lower surface (4) of the extrusion head (3), and-a first extrusion nozzle opening (6) and a second extrusion nozzle opening (7) each arranged in the area of the extrusion head (3) adjacent to the bulge (5), the bulge (5) having a concave design starting from the first extrusion nozzle opening (6) and the second extrusion nozzle opening (7).

Description

TECHNICAL FIELD

[0001] The present invention relates to an extrusion die, an extrusion device, a method for extrusion and use of the extrusion die. BACKGROUND

[0002] The production of seals for various vehicle components is of great importance in the automotive industry. In particular, vehicle glazing must be fitted with sealing elements before being installed in the designated area of the vehicle body. The sealing elements commonly used comprise polymers such as polyurethane, polyolefin, polysulfide, polyepoxide, natural rubber, nitrile rubber, styrene butadiene rubber, ethylene propylene diene rubber (EPDM), RTV (room temperature vulcanizing) silicone rubber, HTV (high temperature vulcanizing) silicone rubber, peroxide vulcanizing silicone rubber, addition vulcanizing silicone rubber, polyacrylate and / or thermoplastic elastomers. These sealing elements serve to manage water and can prevent the ingress of moisture. Furthermore, this prevents the production of interfering driving noises such as whistling noises in the passenger compartment.

[0003] Another important function is to place the glazing stress-free, reproducibly and stably into the designated recess in the vehicle body. The established method for producing the seal on the panel is to extrude a polymer mass and subsequently cure the profile strand, or to cool it down if a thermoplastic material is used. If necessary, a primer can also be applied as a preparation. The formation of the profile strand takes place at the molecular level, for example by means of active polymerization, chain polymerization, polycondensation, addition polymerization, or in the case of thermoplastic elastomers, by means of heating and subsequent cooling. In order to improve the elastic properties, the polymer can be cross-linked, for example by increasing the temperature, humidity or adding oxygen. In order to improve the installation in the vehicle body and in order to increase the stability and the seal, the profile strand often comprises a support lip (sealing lip, centering). These lips can be produced at the same time as part of the profile strand using a suitably shaped extrusion die. Depending on the panel geometry, the position, size and shape of the profile strand can vary.

[0004] It is desirable to provide a glazing comprising a panel with a seal, wherein the seal is flush with the surface of the panel. Firstly, such a glazing is aesthetically advantageous and secondly, it prevents the accumulation of dirt that can collect in the gap between the seal and the panel in the case of a non-flush arrangement.

[0005] EP 2799201 A1 discloses a method and a mold for manufacturing a panel assembly comprising a panel and a seal, wherein the seal can be flush with the surface of the panel. In this manufacturing process, a low-viscosity component is used to form the seal, which is poured into an open or semi-open mold. Due to the use of a low-viscosity component, a complex mechanical design and likewise a complex manufacturing process are required.

[0006] US 5 108 526 A discloses a device for applying a polymeric profile directly onto a circumferential edge of an article.

[0007] US 5 552 194 A discloses an extrusion die, a method for producing a molded part on a plate-shaped article and a plate-shaped article having the produced molded part.

[0008] EP 2 794 227 B1 discloses an extrusion die and a method for dispensing continuously variable profile strands.

[0009] US 5 326 592 A discloses a device for applying a coating solution to an extruded substrate.

[0010] US 5 057 265 A discloses a method for producing a spacer for a windshield mount.

[0011] US 2015 / 217326 A1 discloses a die for sealant molding, a device for sealant molding and a method for sealant molding. SUMMARY

[0012] The present invention is therefore based on the object of providing an extrusion die which can be used for the simple and low-cost production of a glazing unit comprising a panel and a seal, wherein the seal terminates flush with the surface of the panel.

[0013] According to the invention, the object is achieved by an extrusion die according to claim 1. Preferred embodiments can be seen in the dependent claims. The invention also relates to an extrusion device comprising the extrusion die, a method for extruding using the extrusion device and the use of the extrusion die for extruding a profile strand.

[0014] The extrusion die for dispensing a profile strand according to the invention comprises: - an extrusion die body, wherein the extrusion die body has an extrusion die head at a first end and a connecting element at a second end in an extension direction, wherein the extrusion die head comprises a lower surface arranged perpendicular to the extension direction, and a recess arranged in the extension direction and adjacent to the lower surface of the extrusion die head, and - a first extrusion die opening and a second extrusion die opening, each arranged in a region of the extrusion die head adjacent to the recess, wherein the recess is concave starting from the first extrusion die opening and the second extrusion die opening.

[0015] According to the present invention, the extrusion die is suitable for dispensing a profile strand. This means that in the extrusion process, a polymer can be formed into a profile strand via the extrusion die according to the present invention. For the purposes of the present invention, the extruded profile strand can be used as a seal for a glazing, in particular a vehicle glazing, after the polymer has cured. Curing can occur by a chemical reaction induced within the dispensed polymer itself, by absorption of moisture from the air or by a physical change such as a phase change due to cooling.

[0016] The extrusion die according to the present invention comprises an extrusion die body, wherein the extrusion die body has an extrusion die head at a first end and a connecting element at a second end in an extension direction.

[0017] For the purposes of the present invention, an “extrusion die head” is understood to be the portion of the extrusion die body from which the extrudate emerges in the extrusion process. According to the present invention, the first extrusion die opening and the second extrusion die opening are arranged in the extrusion die head.

[0018] The connecting element is not particularly limited. It is preferably designed for connecting the extrusion die to a mass transport device. The connection between the connecting element and the mass transport device can be, for example, a threaded connection or a plug connection. The extrusion die body can be permanently connected to the connecting element or made in one piece with the connecting element. The connecting element can have a recess and a reference pin in the extension direction of the extrusion die body and can be attached to the robot optionally provided below by means of a nut.

[0019] The extension direction of the extrusion die body is the direction in which the extrusion die body has its greatest extension. According to the present invention, in the extension direction of the extrusion die body, the extrusion die head is arranged at a first end and the connecting element is arranged at a second end. The extension direction is preferably perpendicular to the advance direction. The “advance direction” is the direction in which the extrusion die moves during the extrusion process.

[0020] According to the present invention, the extrusion die head comprises a lower surface arranged perpendicular to the extension direction. In particular, the “lower surface” denotes the surface which separates the extrusion die from the surroundings as the lowest face of the extrusion die in the extension direction. In contrast, the extrusion die is separated from the surroundings at the second end in the extension direction by the connecting element.

[0021] Preferably, the lower surface has an L-shape when viewed from above. The L-shape comprises a long leg and a short leg. By using an L-shape, sufficient contact between the extrusion die and the support can be easily produced in the extrusion process, while excessive contact can be avoided. Excessive contact would make it more difficult to guide the extrusion die over the support in the extrusion process. In a preferred embodiment, the short leg of the L-shape is arranged parallel to the advance direction. Furthermore, the long leg of the L-shape is preferably adjacent to the first end of the recess described below. In particular, the edge of the long leg facing away from the short leg is preferably adjacent to the first end of the recess described below.

[0022] In a preferred embodiment, a further surface is arranged adjacent to the lower surface, which further surface extends in the advancing direction from the lower surface. The further surface comprises a first end adjacent to the lower surface and a second end arranged opposite to the first end. The second end of the further surface is preferably located above a plane extending through the lower surface in the direction of extension of the extrusion die body. This means that the further surface extends in a wedge shape from the lower surface in the direction of extension of the extrusion die body. This minimizes the contact between the extrusion die and the support in the extrusion process, allowing the extrusion die to be easily guided.

[0023] According to the invention, the extrusion die comprises a recess arranged in the direction of extension of the extrusion die body and adjacent to the lower surface of the extrusion die. Preferably, the recess is directly adjacent to the lower surface of the extrusion die. Thus, using the extrusion die, it is easy to obtain a seal that terminates flush with a surface of the panel. This also means that, as a result of the extrusion process, this surface of the panel does not have a profile strand. For the purposes of the present invention, a "recess" is understood to be a shape that curves inwards. The recess denotes a depression in the extrusion die itself and is different from the extrusion die opening. The recess is suitable for receiving a panel with its edge. This means that the panel is then positioned in the recess in such a way that the side edge of the panel is aligned in the direction of the recess. For the purposes of the present invention, "flush" means that the corresponding components are arranged in one plane.

[0024] In a preferred embodiment, the recess has the shape of a circular arc in a plan view of the extrusion die in the advancing direction. This makes it easy to receive the panel.

[0025] According to one embodiment, the recess has a first end and a second end. Preferably, the first end of the recess is adjacent to the lower surface of the extrusion die. Preferably, a flat surface extends from the second end of the recess in the direction in which the recess is concave. In particular, the flat surface is parallel to the surface of the panel that is positioned in the recess during the extrusion process. This makes it particularly easy to receive the panel in the recess and to distribute the profile strand to the surface of the panel opposite to the surface at which the profile strand terminates flush. This allows a good sealing of the corresponding glazing.

[0026] According to one embodiment, the first end of the recess denotes a terminal edge of the extrusion die, which is set back relative to the flat surface in a plan view of the extrusion die in the advancing direction. "Terminal edge" means here that this edge is the outermost surface of the extrusion die in this region. "Set back" means here that the extrusion die has a smaller width in the region of the first end of the recess than in the region of the flat surface. The width of the extrusion die here refers to the direction in which the recess is concave.

[0027] In a preferred embodiment, the extrusion die includes a front recess having the desired profile strand shape, and extends from the foremost region of the extrusion die in a plan view in the forward direction to an area of ​​the extrusion die in which a first extrusion die opening and a second extrusion die opening are arranged. This allows the resulting extrudate to readily form the desired profile strand.

[0028] The die body preferably comprises at least one metal selected from iron, chromium, cobalt, nickel, titanium, manganese, aluminum, niobium, tungsten, molybdenum, and vanadium. The die body is particularly preferably made of steel. According to another embodiment, the die body comprises a temperature-stable plastic material.

[0029] For example, extrusion molds can be manufactured using 3D printing or injection molding.

[0030] According to the invention, the extrusion die includes a first extrusion die opening and a second extrusion die opening, each disposed in a region of the extrusion die head adjacent to a recess, wherein the recess is concave starting from the first and second extrusion die openings. As long as the first and second extrusion die openings are present, the additional number of extrusion die openings is variable and depends on the desired shape of the profile strands. Because the first and second extrusion die openings are disposed in this region of the extrusion die head, the profile strands can be easily applied to the panel.

[0031] Preferably, the first extrusion die opening and the second extrusion die opening are each arranged in the extrusion die head such that they open in a direction opposite to the forward direction. This facilitates the continuous extrusion of profile strands with a uniform profile.

[0032] In a preferred embodiment of the invention, the first extrusion die opening is arranged in a region of the extrusion die that is perpendicular to and adjacent to the lower surface of the extrusion die. In this way, profile strands can be easily distributed, terminating flush with the surface of the panel.

[0033] Preferably, the second extrusion die opening is arranged such that it is further away from the lower surface of the extrusion die than the first extrusion die opening in the extension direction. In this way, profile strands can be easily obtained, which, in addition to terminating flush with the surface of the panel, are also positioned at the edge of the panel.

[0034] More preferably, the second extrusion die opening extends into a region of the extrusion die head that begins at the lower surface of the extrusion die head and lies above the flat surface described above. This facilitates the distribution of profile strands to the panel surface opposite to the surface where the profile strands terminate, which is flush with the panel surface. This allows for a good seal for the corresponding glass window.

[0035] In one embodiment of the present invention, the first extrusion die opening and the second extrusion die opening each have a diameter of at least 1 mm.2 The minimum opening area. In one embodiment, the first extrusion die opening and the second extrusion die opening each have a maximum of 100 mm. 2 The maximum opening area.

[0036] In a preferred embodiment, the extrusion die further includes a first feed channel and a second feed channel.

[0037] Preferably, the first feed channel extends through the extrusion die body to the first extrusion die opening, and the second feed channel extends through the extrusion die body to the second extrusion die opening.

[0038] In one embodiment, a first feed channel and a second feed channel are arranged in a connecting element. In another embodiment, the connecting element has an opening that extends into the extrusion die body and is divided into a first feed channel and a second feed channel within the extrusion die body.

[0039] There are no particular restrictions on the cross-sectional shape of the first and second feed channels. For example, the cross-sectional shape of the first and second feed channels corresponds to a circular shape in each case.

[0040] In one embodiment, the extrusion die has a plurality of separate feed channels, the same number as the number of extrusion die openings, wherein, in particular, the feed channels have a circular cross-section at a second end of the extrusion die body, and the cross-section changes along the extrusion die body to the cross-sectional area of ​​the extrusion die openings.

[0041] There are no particular limitations on the opening area of ​​the first and second feed channels, and they can be appropriately selected by those skilled in the art depending on the polymer used and the desired flow rate.

[0042] The present invention further includes an extrusion apparatus comprising: - According to the extrusion die of the present invention, - A mass block conveying device connected to the extrusion die, and - A support component that contacts the lower surface of the extrusion die head. The extrusion device is configured to receive a panel having a first surface, a second surface, and a side edge disposed between the first surface and the second surface, wherein the edge of the panel is in a recess of the extrusion die head of the extrusion die, such that the first surface of the panel is arranged flush with the lower surface of the extrusion die head, and the support member contacts the first surface of the panel.

[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] There are no particular limitations on the mass block conveying device included in the extrusion apparatus, as long as it is suitable for conveying mass blocks, i.e., polymer mass blocks. For example, the mass block conveying device can be an extruder, a piston feeder, or a gear pump. Corresponding devices are well known to those skilled in the art.

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

[0046] According to the invention, an extrusion apparatus is configured to receive a panel having a first surface, a second surface, and a side edge disposed between the first and second surfaces, wherein the edge of the panel is in a recess of an extrusion die, such that the first surface of the panel is arranged flush with the lower surface of the extrusion die, and a support member contacts the first surface of the panel. By arranging the first surface of the panel flush with the lower surface of the extrusion die and by using a support member that contacts both the first surface of the panel and the lower surface of the extrusion die, a profile strand terminating flush with the first surface of the panel can be formed.

[0047] Preferably, the extrusion die and the panel are spaced apart. In a preferred embodiment, the distance between the extrusion die and the panel is at least 0.1 mm. This makes it easy to avoid scratches on the panel and wear on the extrusion die. In a preferred embodiment, the distance between the extrusion die and the panel is at most 0.4 mm. If the gap is too large, excessive material leakage and changes in the cross-section of the profile strands can occur at that gap. This distance is preferably adjusted via a guide wheel, which is preferably arranged on the robot mentioned below. The guide wheel is preferably in contact with the panel throughout the extrusion process. This makes it easy to ensure the desired distance between the extrusion die and the panel.

[0048] A panel that can be arranged in an extrusion apparatus according to the invention includes a first surface, a second surface, and a side edge disposed between the first and second surfaces. The panel is preferably made of glass, particularly preferably soda-lime glass, as is customary for panels. However, the panel may also be made of another type of glass, such as quartz glass, borosilicate glass, or aluminosilicate glass, or of a rigid, transparent plastic material, such as polycarbonate or polymethyl methacrylate.

[0049] The thickness of the panel can vary considerably and can be adapted to the requirements of individual cases in this way. If the panel is formed as a monolithic panel, its thickness is preferably 0.5 mm to 5 mm, particularly preferably 1 mm to 3 mm, and very particularly preferably 1.6 mm to 2.1 mm.

[0050] In a preferred embodiment of the invention, the panel is a laminated panel that comprises at least the following components in the following order: - An outer panel with an outer and inner surface. - Thermoplastic interlayer, and - An inlay panel with an outer and inner surface. The outer surface of the outer panel corresponds to the first surface of the panel.

[0051] As described above, the outer panel and the inner panel each have an outer surface (i.e., the outer surface) and 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 surrounding environment during installation. For the purposes of this invention, the inner surface refers to the main surface intended to face inward during installation. The inner surface of the outer panel and the outer surface of the inner panel face each other in the laminated panel.

[0052] The surface of a laminate panel typically looks like the following: The outer surface of the outer panel is called side I. The inner surface of the outer panel is called side II. The outer surface of the inner panel is called side III. The inner surface of the inner panel is called side IV.

[0053] According to a preferred embodiment of the invention, the outer surface of the outer panel corresponds to the first surface of the panel. This allows for the production of profile strands that terminate flush with the outer surface of the outer panel.

[0054] For the purposes of this invention, when laminated panels are intended to separate interior space from the external environment in a window opening of a vehicle or building, the panel facing the interior space (vehicle interior) is referred to as an "inner panel." An outer panel refers to a panel facing the external environment.

[0055] The outer and inner panels are preferably made of glass, particularly soda-lime glass, as is customary for panels. However, panels may also be made of other types of glass (e.g., quartz glass, borosilicate glass, or aluminosilicate glass) or of rigid, transparent plastic materials (e.g., polycarbonate or polymethyl methacrylate). Panels may be transparent or colored. If laminated panels are used as windshields, the outer and inner panels should have sufficient light transmittance in the central viewing area—preferably at least 70% in the main perspective area A, according to ECE-R43. The outer and inner panels are preferably curved, i.e., they have curvature.

[0056] The thickness of the outer and inner panels can vary considerably and can therefore be adapted to the requirements of individual cases. The outer and inner panels 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 outer panel has a thickness of 2.1 mm, and the inner panel has a thickness of 1.6 mm. However, the outer panel, or particularly the inner panel, can also be, for example, thin glass with a thickness of 0.55 mm.

[0057] The laminated panel includes a thermoplastic interlayer. Preferably, the thermoplastic interlayer comprises at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), thermoplastic polyurethane (PU), or mixtures or copolymers, such as block copolymers, or derivatives thereof, particularly preferably polyvinyl butyral (PVB), very particularly preferably polyvinyl butyral (PVB), and additives known to those skilled in the art, such as plasticizers.

[0058] 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.

[0059] According to the invention, the extrusion apparatus includes a support member that contacts the lower surface of the extrusion die. Furthermore, if a panel having a first surface, a second surface, and a side edge disposed between the first and second surfaces is arranged such that its edge is within a recess in the extrusion die, the support member contacts the first surface of the panel. The support member is not particularly limited, as long as it is suitable for supporting and / or securing the panel. Support members known to those skilled in the art can be used. Preferably, the support member comprises a table. More preferably, a frame adapted to hold the panel is disposed on the table. Particularly preferably, in the contact area with the panel, the frame has a curvature corresponding to the curvature of the panel.

[0060] In a preferred embodiment, the support includes a layer made of an elastic material that contacts the lower surface of the extrusion die. When a panel having a first surface, a second surface, and side edges disposed between the first and second surfaces is arranged such that its edges are within the recess of the extrusion die, the layer made of the elastic material contacts the first surface of the panel. This layer of elastic material acts as a buffer between the panel and other components of the support, such as a table or frame. Additionally, the layer of elastic material allows for a good seal in the areas contacting the first surface of the panel and the lower surface of the extrusion die. Specifically, in this embodiment, the contact between the layer of elastic material and the first surface of the panel or the lower surface of the extrusion die is maintained throughout the entire distribution process of the profile strands in the extrusion method, making it easy to produce profile strands that terminate flush with the first surface of the panel in the entire area they have been distributed into the panel.

[0061] There are no particular limitations on the elastic material of the layer made of elastic material. For example, the elastic material may include at least one of silicone, ethylene propylene diene monomer (EPDM), thermoplastic elastomers (TPE) (such as TPV (thermoplastic vulcanizate) or TPS (thermoplastic styrene block copolymer)), and polytetrafluoroethylene (PTFE), or a combination thereof. PTFE may, for example, be the outer layer of the layer made of elastic material, wherein the outer layer is in contact with the first surface of the panel and with the lower surface of the extrusion die.

[0062] Preferably, the support includes the aforementioned table, the aforementioned frame, and the aforementioned layer made of an elastic material. More preferably, the layer made of an elastic material is disposed at least in the area of ​​the side edge of the panel on the frame. Even more preferably, starting from the side edge of the panel, the layer made of an elastic material extends further from this area along the first surface of the panel and along the lower surface of the extrusion die, preferably extending at least 9 mm in each direction, more preferably at least 10 mm in each direction.

[0063] The extrusion apparatus preferably includes a robot for holding (and guiding) the extrusion die. Furthermore, control, particularly adjustment, 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 panels and / or components thereof.

[0064] In one embodiment, the extrusion apparatus includes a compensation device arranged between the preferably provided robot and the extrusion die. If the panel is curved, the compensation device is adapted to compensate for path differences between the robot and the extrusion die caused by bending tolerances that may exist in the panel. The compensation device may be, for example, a spring or a device controlled by compressed air.

[0065] The extrusion apparatus according to the invention can be used to produce glass windows, preferably vehicle windows, particularly windshields, or architectural windows, comprising a panel having a first surface, a second surface, and side edges disposed between the first and second surfaces, and profile strands, wherein the profile strands are disposed on the side edges of the panel and on the second surface of the panel, and wherein the profile strands are flush with the first surface of the panel. In one embodiment, the profile strands include a lip disposed at the level of the second surface of the panel, pointing away from the panel. The sealing of the glass window is ultimately achieved by curing the polymer forming the extruded profile strands.

[0066] The present invention further includes a method for continuously extruding profile strands onto a panel, comprising at least: - Provides an extrusion apparatus according to the invention, - Provides a panel 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 of the panel and the second surface of the panel via the extrusion die of the extrusion device.

[0067] The method according to the invention is also referred to herein as the "extrusion method". According to the invention, the extrusion method is performed continuously. This means that during the method, the extrusion die moves in the forward direction, thereby forming profile strands. When profile strands are formed along the side edges of a panel and on the second surface of the panel 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.

[0068] 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 profile strands and panels.

[0069] There are no particular limitations on the polymers used in the method according to the invention, as long as they are suitable for extrusion.

[0070] In one embodiment of the invention, the polymer includes at least one of polyurethane, polyolefins (such as polyethylene and polypropylene), polysulfides, polyepoxides, natural rubber, nitrile rubber (NBR), 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, polyacrylate, silane-modified polymers, and thermoplastic elastomers (TPE).

[0071] The silane-modified polymer consists of polymer chains, linking groups, and hydrolyzable silane units. Preferably, the polymer chain is one of polyether polyols, polyesters, polycarbonates, polyacrylates, polyolefins, and polyurethanes. The linking 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 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 a thermoplastic elastomer. More preferably, thermoplastic elastomers include polypropylene and ethylene propylene diene rubber (PP / EPDM). By using such a polymer in the method according to the invention, seals terminating flush with the surface of the panel can be produced simply and at low cost.

[0074] The invention further includes the use of the extrusion die according to the invention for extruding profile strands into panels for producing 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 representations and are not to scale. The drawings do not limit the invention in any way. In the drawings: Figure 1 This is a view of an embodiment of the extrusion die 1 according to the present invention. Figure 2 yes Figure 1 Another view of an embodiment of the extrusion die 1 according to the present invention is shown. Figure 3 Is it like this? Figure 1 and Figure 2 Another view of an embodiment of the extrusion die 1 according to the present invention is shown. Figure 4 This is a view of an embodiment of the extrusion apparatus 100 according to the present invention. Figure 5 yes Figure 4Another view of an embodiment of the extrusion apparatus 100 according to the present invention is shown. Figure 6 An embodiment of the method according to the invention for continuously extruding profile strands onto a panel 200 is shown, and Figure 7 This is a view of a glass window 400 that can be produced using the present invention. Detailed Implementation

[0077] Figures 1 to 3 A view showing an embodiment of an extrusion die 1 according to the present invention is shown. The extrusion die 1 includes an extrusion die body 2, wherein the extrusion die body 2 has an extrusion die head 3 at a first end 2a in the extension direction X and a connecting element (not shown) at a second end, wherein the extrusion die head 3 includes a lower surface 4 arranged perpendicular to the extension direction X and a recess 5 arranged in the extension direction X and adjacent to the lower surface 4 of the extrusion die head 3, and a first extrusion die opening 6 and a second extrusion die opening 7 respectively arranged in the region of the extrusion die head 3 adjacent to the recess 5, wherein the recess 5 is concave starting from the first extrusion die opening 6 and the second extrusion die opening 7.

[0078] In a plan view of the extrusion die 1 in the forward direction V, the recess 5 includes an arcuate shape. The recess 5 has a first end 5a and a second end 5b, wherein the first end 5a of the recess 5 is adjacent to the lower surface 4 of the extrusion die 3, and a flat surface 8 extends from the second end 5b of the recess 5 in the direction in which the recess 5 is concave.

[0079] like Figure 3 As shown, the lower surface 4 has an L-shape in a plan view of the extrusion die 1 viewed from below. The L-shape includes a long leg and a short leg. The short leg is arranged parallel to the forward direction V. The long leg is adjacent to the first end 5a of the recess 5.

[0080] Another surface 11 is arranged adjacent to the lower surface 4, extending from the lower surface 4 in the forward direction V. This additional surface 11 includes a first end 11a adjacent to the lower surface 4 and a second end 11b arranged opposite to the first end 11a. The second end 11b of the additional surface 11 is located above a plane extending through the lower surface 4 in the extending direction X of the extrusion die body 2. This means that the additional surface 11 extends in a wedge shape from the lower surface 4 in the extending direction X. Figure 3 The dashed lines shown indicate the path of the side edge S of the panel during the extrusion process. The extrusion die 1 and the side edge S of the panel are spaced apart from each other. Preferably, the distance between the extrusion die 1 and the side edge S of the panel is at least 0.1 mm.

[0081] The first extrusion die opening 6 is arranged in the region of the extrusion die 3 that is perpendicular to the lower surface 4 of the extrusion die 3 and adjacent to the lower surface 4 of the extrusion die 3.

[0082] The second extrusion die opening 7 is arranged such that it is farther away from the lower surface 4 of the extrusion die 3 in the extension direction X than the first extrusion die opening 6. The second extrusion die opening 7 extends into the region of the extrusion die 3 above the flat surface 8 starting from the lower surface 4 of the extrusion die 3.

[0083] The extrusion die 1 further includes a first feed channel 9 and a second feed channel 10. The first feed channel 9 extends through the extrusion die body 2 to a first extrusion die opening 6, and the second feed channel 10 extends through the extrusion die body 2 to a second extrusion die opening 7.

[0084] The first extrusion die opening 6 and the second extrusion die opening 7 are arranged in the extrusion die head 3 such that they are open in a direction opposite to the forward direction V.

[0085] Figure 4 and Figure 5 A view in the forward direction is shown of an embodiment of the extrusion apparatus 100 according to the invention. In particular, Figure 4 An embodiment of the extrusion apparatus 100 is shown before the polymer or extrudate exits through the first extrusion die opening 6 and the second extrusion die opening 7. In contrast, Figure 5 An embodiment of an extrusion apparatus 100 is shown when the extrudate has emerged from the first extrusion die opening 6 and the second extrusion die opening 7 and has correspondingly formed a stock. For simplicity, the second end of the extrusion die body having connecting elements and a mass block conveying device is not shown.

[0086] The extrusion apparatus 100 includes, according to an embodiment of the invention, a... Figures 1 to 3 The diagram shows an extrusion die 1, a mass block conveying device (not shown) connected to the extrusion die 1, and a support member 101 in contact with the lower surface 4 of the extrusion die 3. A panel having a first surface, a second surface, and a side edge disposed between the first and second surfaces is arranged such that its edge is within a recess 5 of the extrusion die 3. The first surface of the panel is arranged flush with the lower surface 4 of the extrusion die 3. The support member 101 contacts the first surface of the panel.

[0087] In the illustrated embodiment, the panel is a laminated panel 300, which comprises, in the following order: - Outer panel 301 having outer surface I and inner surface II, - Thermoplastic interlayer 302, and - An inlay panel 303 having an outer surface III and an inner surface IV, The outer surface I of the outer panel 301 corresponds to the first surface of the panel. Therefore, the outer surface I of the outer panel 301 is in contact with the support member 101 and is arranged to be flush with the lower surface 4 of the extrusion die 3.

[0088] Preferably, the distance between the extrusion die 1 and the panel is at least 0.1 mm. Specifically, in Figure 4 and Figure 5 In the embodiment shown, there are gaps between the inner surface IV of the insert 303 and the extrusion die 1, and between the side edge of the insert and the extrusion die 1.

[0089] Preferably, the mass block conveying device (not shown) is connected to the extrusion die 1 via a connecting element (not shown).

[0090] Figure 6 An embodiment of the method according to the invention for continuously extruding profile strands onto a panel 200 is shown. The method according to the invention for continuously extruding profile strands onto a panel 200 includes at least: - Provides an extrusion apparatus 100 according to the present invention. - Provides a panel 200 having a first surface 201, a second surface 202, and side edges 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 panel 200 via the extrusion die 1 of the extrusion device 100.

[0091] For simplicity, the second end of the extrusion die body with connecting elements and mass block conveying device is not shown.

[0092] During this method, the extrusion die 1 moves in the forward direction V, thereby forming profile strands.

[0093] Figure 7 A view showing a glass window 400 that can be produced using the present invention is illustrated. The glass window 400 includes a laminated panel 300, which comprises, in the following order: - Outer panel 301 having outer surface I and inner surface II, - Thermoplastic interlayer 302, and - An inner panel 303 having an outer surface III and an inner surface IV, and Profile strands 401 are arranged on the side edge 304 of the laminated panel 300 and on the inner surface IV of the inner panel 303, wherein the profile strands 401 are flush with the outer surface I of the outer panel 301.

[0094] Reference tag list 1. Extrusion die 2. Extrusion die body 2a First end of the extrusion die body 3. Extrusion die 4. Lower surface of the extrusion die 5 recess 5a The first end of the concave portion 5b Second end of the recess 6 First extrusion die opening 7 Second extrusion die opening 8. Flat surface 9 First Feed Channel 10 Second Feed Channel 11. Another aspect 11a The first end of the other face 11b The second end of the other face 100 Extrusion Unit 101 Support Component 200 panel 201 First Surface 202 Second Surface 203 Side Edge 300 laminate panel 301 Exterior Panel 302 thermoplastic interlayer 303 Inset Panel 304 side edge I. Outer surface of the panel II. Inner surface of the outer panel III. Outer surface of the inlay panel IV. Inner surface of the panel 400 glass windows 401 Profile Stock Line S-shaped panel side edge V - Direction of movement X is the direction of extension.

Claims

1. An extrusion die (1) for distributing profile strands, comprising: - An extrusion die body (2), wherein the extrusion die body (2) has an extrusion die head (3) at a first end (2a) and a connecting element at a second end in the extension direction (X). The extrusion die (3) includes a lower surface (4) arranged perpendicular to the extension direction (X), and A recess (5) arranged in the extending direction (X) and adjacent to the lower surface (4) of the extrusion die (3), and - A first extrusion die opening (6) and a second extrusion die opening (7), each arranged in the region of the extrusion die (3) adjacent to the recess (5). The recess (5) is concave starting from the first extrusion die opening (6) and the second extrusion die opening (7).

2. The extrusion die (1) according to claim 1, wherein, In a plan view of the extrusion die (1) in the forward direction (V), the recess (5) includes an arc shape.

3. The extrusion die (1) according to claim 1 or 2, wherein, The recess (5) has a first end (5a) and a second end (5b), wherein the first end (5a) of the recess (5) is adjacent to the lower surface (4) of the extrusion die (3), and a flat surface (8) extends from the second end (5b) of the recess (5) in a concave direction on the recess (5).

4. The extrusion die (1) according to claim 3, wherein, The first end (5a) of the recess (5) represents the terminating edge of the extrusion die (1), which recedes relative to the flat surface (8) in a plan view of the extrusion die (1) in the forward direction (V).

5. The extrusion die (1) according to any one of claims 1 to 4, wherein, The first extrusion die opening (6) is arranged in the region of the extrusion die (3) that is perpendicular to the lower surface (4) of the extrusion die (3) and adjacent to the lower surface (4) of the extrusion die (3).

6. The extrusion die (1) according to claim 5, wherein, The second extrusion die opening (7) is arranged such that it is further away from the lower surface (4) of the extrusion die head (3) in the extension direction (X) than the first extrusion die opening (6).

7. The extrusion die (1) according to any one of claims 1 to 6, wherein, The lower surface (4) has an L-shape in a plan view of the lower surface (4).

8. The extrusion die (1) according to any one of claims 1 to 7, wherein, An additional surface (11) is arranged adjacent to the lower surface (4) and extending in the forward direction (V) from the lower surface (4), wherein the additional surface (11) includes a first end (11a) adjacent to the lower surface (4) and a second end (11b) opposite to the first end (11a), wherein the second end (11b) of the additional surface (11) is arranged above a plane extending through the lower surface (4) in the extension direction (X) of the extrusion die body (2).

9. The extrusion die (1) according to any one of claims 1 to 8, wherein, The first extrusion die opening (6) and the second extrusion die opening (7) are arranged in the extrusion die (3) such that the first extrusion die opening (6) and the second extrusion die opening (7) are open in a direction opposite to the forward direction (V).

10. An extrusion apparatus (100), comprising: - The extrusion die (1) according to any one of claims 1 to 9, - A mass block conveying device connected to the extrusion die (1), and - A support member (101) that contacts the lower surface (4) of the extrusion die (3) of the extrusion die (1). The extrusion device (100) is configured to receive a panel (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), wherein the edge of the panel (200) is in the recess (5) of the extrusion die (3) of the extrusion die (1), such that the first surface (201) of the panel (200) is arranged flush with the lower surface (4) of the extrusion die (3), and the support (101) contacts the first surface (201) of the panel (200).

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

12. The extrusion apparatus (100) according to claim 10 or 11, wherein, The support member (101) includes a layer made of elastic material, wherein the layer made of elastic material contacts the lower surface (4) of the extrusion die (3), and the layer made of elastic material contacts the first surface (201) of the panel (200) when the panel (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) is arranged such that its edge is in the recess (5) of the extrusion die (3) of the extrusion die (1).

13. A method for continuously extruding profile strands onto a panel (200), comprising at least: - Provides an extrusion apparatus (100) according to any one of claims 10 to 12, - Provides a panel (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 panel (200) and to the second surface (202) of the panel (200) via the extrusion die (1) of the extrusion device (100).

14. The method according to claim 13, wherein, The polymer is a thermoplastic elastomer.

15. The use of the extrusion die (1) according to any one of claims 1 to 9 for extruding profile strands onto a panel (200) for producing vehicle windows, particularly windshields, or building windows.

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