Abstract
A polymeric pane, having a polymeric main body with a first pane surface, a second pane surface, a peripheral pane edge, and a protective coating on the entire second pane surface and on at least part of the first pane surface. An extruded-on sealing profile is mounted on the side of the first pane surface via an adhesion promoter.
Claims
1.-13. (canceled)
14. A polymeric pane, comprising: a polymeric main body, having a first pane surface, a second pane surface, and a peripheral pane edge; a protective coating on the entire second pane surface and on at least a part of the first pane surface; and an extruded-on sealing profile arranged on a side of the first pane surface via an adhesion promoter.
15. The polymeric pane according to claim 14, wherein the sealing profile is arranged parallel to the pane edge and a distance ‘a’ from the sealing profile to the pane edge is less than 5 cm.
16. The polymeric pane according to claim 15, wherein the distance ‘a’ is less than 2 cm.
17. The polymeric pane according to claim 16, wherein the distance ‘a’ is less than 0.5 cm.
18. The polymeric pane according to claim 15, wherein the adhesion promoter and the extruded sealing profile are arranged peripherally along the entire pane edge.
19. The polymeric pane according to claim 15, wherein the adhesion promoter and the extruded sealing profile are arranged only along a part of the pane edge.
20. The polymeric pane according claim 14, wherein the extruded sealing profile protrudes beyond the pane edge.
21. The polymeric pane according claim 14, wherein the extruded sealing profile is arranged on the first pane surface and on the second pane surface, encompassing the pane edge.
22. The polymeric pane according to claim 14, wherein a black print is arranged on the first pane surface at least on one edge region of the pane.
23. The polymeric pane according to claim 14, wherein an opaque material phase is arranged on the first pane surface at least on the edge region of the pane.
24. The polymeric pane according to claim 14, wherein the extruded sealing profile contains thermoplastic elastomers, thermoplastic polyurethanes, styrene copolymers, polyolefin rubber blends, polyolefin elastomer blends, thermoplastic copolyamides, thermoplastic copolyesters, and/or mixtures thereof.
25. The polymeric pane according to claim 14, wherein the adhesion promoter contains polyurethanes, epoxy resins, chlorinated polyolefins, and/or mixtures thereof.
26. A method for producing the polymeric pane according to claim 14, comprising: providing the polymeric main body; applying the protective coating on the second pane surface; applying the adhesion promoter on the first pane surface in the region provided for the sealing profile; and extruding the sealing profile on the adhesion promoter.
27. The method according to claim 26, further comprising: activating the first pane surface in the region provided for the sealing profile; wherein the activating the first pane surface is performed prior to the applying of the adhesion promoter.
28. The method according to claim 27, wherein the activating is done by using atmospheric plasma.
29. The method according to claim 26, further comprising: using the polymeric pane as a pane, or as a component of a pane, as means of transportation for travel on land, in the air, or on water, as a rear window, or windshield, or side window, or roof panel, or luminaire covering, or molding, or as a vehicle roof of passenger cars, trucks, buses, streetcars, subways, trains, and motorcycles.
Description
[0044] The invention is explained in detail with reference to drawings. The drawings are schematic representations and not true to scale. The drawings in no way restrict the invention, They depict:
[0045] FIG. 1 a cross-section through an embodiment of a polymeric pane according to the invention in the region of the pane edge,
[0046] FIG. 2 a cross-section through another embodiment of a polymeric pane according to the invention in the region of the pane edge,
[0047] FIG. 3 a cross-section through another embodiment of a polymeric pane according to the invention in the region of the pane edge,
[0048] FIG. 4 a cross-section through another embodiment of a polymeric pane according to the invention in the region of the pane edge,
[0049] FIG. 5 a top view of the first pane surface of a polymeric pane according to the invention,
[0050] FIG. 6 a top view of the second pane surface of a polymeric pane according to the invention,
[0051] FIG. 7 a top view of the first pane surface of another embodiment of a polymeric pane according to the invention,
[0052] FIG. 8 a flowchart of the method according to the invention for producing a polymeric pane.
[0053] FIG. 1 depicts a cross-section through a polymeric pane I produced by thermoforming in the region of the pane edge 4. The polymeric pane I is a rear window of a motor vehicle, The polymeric main body 1 of the polymeric pane I contains polycarbonate (PC) and is implemented transparent. The polymeric main body 1 has a first pane surface 2, a second pane surface 3, and a pane edge 4. The first pane surface 2 and the second pane surface 3 are implemented parallel to one another. The thickness d of the polymeric main body 1 is 4 mm. The second pane surface 3 is intended as an external surface of the rear window. Consequently, it is exposed to particular mechanical and chemical stresses as well as UV radiation. The second pane surface 3 is, consequently, provided with a protective coating 5. The first pane surface 2 is also provided with a protective coating 5, since even the side of the pane facing the motor vehicle interior is exposed to chemical and mechanical stresses, such as, for instance, cleaning agents as well as scratching by vehicle occupants or pieces of luggage that come into contact with the pane. The protective coating 5 contains polysiloxanes. In the edge region 6 of the polymeric main body 1, a black print 9 is applied by a screen printing method on the first pane surface 2. The edge region 6 is roughly 5 cm wide and runs parallel to the pane edge 4. The black print 9 is arranged directly on the polymeric main body 1 and is protected by the protective coating 5. The black print 9 hides an extruded sealing profile 8 and an adhesion promoter 7 when looking at the second pane surface 3 and thus improves the visual impression of the polymeric pane I. The distance a between an extruded sealing profile 8 and the pane edge 4 is roughly 5 mm. Only the part of the extruded sealing profile 8 that is in contact with the adhesion promoter 7 is considered for the determination of the distance a. The distance a is then determined from the beginning of the extruded sealing profile 8, viewed from the pane edge 4. The extruded sealing profile 8 runs parallel to the pane edge 4 and protrudes beyond the pane edge 4. If the polymeric pane I is installed in a window opening, the part of the sealing profile 8 protruding beyond the pane edge 4 can be positioned around the pane edge 4 and thus provide for good sealing. The extruded sealing profile 8 contains a thermoplastic elastomer. The sealing profile 8 is applied via an adhesion promoter 7. The adhesion promoter 7 contains polyurethanes, chlorinated polyolefins, and an aqueous solvent. The adhesion promoter ensures the adhesion on the protective coating 5,
[0054] FIG. 2 depicts another embodiment of a polymeric pane according to the invention in the region of the pane edge. The polymeric pane I depicted corresponds essentially to the pane depicted in FIG. 1. A black print 9 protected by the protective coating 5 is also arranged on the polymeric main body 1. The extruded sealing profile 8 surrounds the pane edge 4 and is arranged on the first pane surface 2, the second pane surface 3, and the pane edge 4. The extruded sealing profile 8 is affixed on the protective coating 5 via an adhesion promoter 7, The adhesion promoter 7 improves the adhesion of the extruded sealing profile 8 on the protective coating. Since the extruded sealing profile 8 surrounds the pane edge 4, the pane edge 4 is optimally protected against damage before, during, and after installation in a window opening. The distance a between an extruded sealing profile 8 and the pane edge 4 is 0 m, since the extruded sealing profile 8 encompasses the pane edge 4..
[0055] Fig, 3 depicts a cross-section through another embodiment of a polymeric pane according to the invention in the region of the pane edge. An opaque material phase 10 is arranged on the first pane surface 2 of the polymeric main body 1. The polymeric main body 1 and the opaque material phase 10 contain polycarbonate. The opaque material phase 10 additionally contains a black pigment as a colorant. The opaque material phase 10 conceals the view of the sealing profile 8 positioned there behind, looking from the direction of the second pane surface 3 toward the polymeric pane I. In addition, the opaque material phase 10 contributes to the strength of the polymeric pane I in the edge region 6. The thickness d of the polymeric main body 1 is 4 mm; the thickness of the opaque material phase 10 is 2 mm. The opaque material phase 10 is arranged in an edge region 6. The edge region 6 is 4 cm wide and runs parallel to the pane edge 4. The polymeric main body 1 with the opaque material phase 10 is produced in a two-component injection molding process. First, the polymeric main body 1 is produced in an injection molding tool; and before the removal of the polymeric main body 1, the opaque material phase 10 is injected onto the polymeric main body 1 in this injection molding tool, The entire first pane surface 2 and the second pane surface 3 are provided with a protective coating 5. The opaque material phase 10 is protected by the protective coating 5. The sealing profile 8 is applied on the protective coating 5 via the adhesion promoter 7. The sealing profile 8 runs parallel to the pane edge 4. The distance a between the sealing profile 8 and the pane edge 4 is 1.5 cm. Part of the sealing profile 8 protrudes beyond pane edge 4.
[0056] FIG. 4 depicts a cross-section through another embodiment of a polymeric pane according to the invention in the region of the pane edge. The polymeric pane I corresponds essentially to the pane depicted in FIG. 3. The first pane surface 2 is not completely provided with a protective coating 5. The opaque material phase 10 is free of a protective coating 5. The pane edge 4 and the second pane surface 3 are completely protected by the protective coating 5. The first pane surface 2 is intended for the motor vehicle interior side after installation in a motor vehicle opening. The chemical and mechanical stresses are consequently lower than on the second pane surface 3 provided for the outer side. A possible visual damage of the opaque material phase 10 by, for example, scratching, is not so disadvantageous as scratching of a transparent through-vision region. Consequently, protective coating can be saved, in particular with an opaque material phase 10 arranged over a large area. The adhesion promoter 7 is arranged directly on the opaque material phase 10. The adhesion promoter 7 ensures good adhesion of the extruded sealing profile 8 on the opaque material phase 10.
[0057] FIG. 5 depicts a top view of the second pane surface 3 of a polymeric pane according to the invention I. The polymeric pane I is implemented rectangular, and a sealing profile 8 is arranged along 3 sides of the polymeric pane I. The sealing profile 8 is implemented as depicted in FIG. 1. It protrudes beyond the pane edge 4. When the second pane surface 3 is viewed from above, only the part of the sealing profile 8 protruding beyond the pane edge 4 is visible. The polymeric main body 1 is implemented transparent and provided with a protective coating 5. In the peripheral edge region 6 of the pane, a black print 9, which is also protected by the protective coating 5, is applied. The black print 9 conceals the view of the part of the extruded sealing profile 8 applied on the first pane surface 2.
[0058] FIG. 6 depicts a top view of the first pane surface 2 of a polymeric pane according to the invention I. This is the polymeric pane I depicted in FIG. 5, which is depicted here from the opposite side. When the first pane surface 2 is viewed, the part of the sealing profile 8 protruding beyond the pane edge 4 and the part of the sealing profile 8 applied on the first pane surface 2 are visible. The entire first pane surface is provided with a protective coating.
[0059] FIG. 7 depicts a top view of the first pane surface 2 of a polymeric pane according to the invention. The polymeric pane I is intended as a roof panel for a motor vehicle. The polymeric main body 1 is implemented transparent. The polymeric main body 1 is produced in the two-component injection molding process together with the opaque material phase 10. The opaque material phase 10 extends over more than 50% of the surface of the polymeric main body 1. The opaque material phase 10 hides, for one thing, the sealing profile 8 and other objects and thus improves the visual appearance of the polymeric pane I when looking at the second pane surface 2. For another, the opaque material phase 10 improves the stability of the polymeric pane I. The through-vision region of the roof panel is situated in the region in which no opaque material phase 10 is arranged. In this region, a protective coating 5, with which the part of the polymeric pane I facing the vehicle interior is protected against scratching, is arranged on the first pane surface 2. In this embodiment, the opaque material phase 10 is not provided with a protective coating 5 since, after installation of the vehicle headliner, this region is covered and thus no protection against scratching is required. The entire second pane surface 3, which is not depicted in FIG. 7, is provided with the protective coating 5, since the motor vehicle exterior is exposed to high mechanical stresses, The sealing profile 8 is applied, as depicted in FIG. 4, directly on the opaque material phase 10 via an adhesion promoter 7. In this case, the sealing profile 8 is arranged peripherally along the entire pane edge 4 and and serves for fixing and sealing the pane in the roof window opening.
[0060] FIG. 8 depicts a flowchart of a method according to the invention. First, a polymeric main body 1 is provided by, for example, an injection molding process. Optionally, the polymeric main body 1 can, for example, be provided with a black print 9 by a screen printing method. Then, a protective coating 5 is applied, for example, by a flow coating method, preferably on the first pane surface 2 and the second pane surface 3. Then, optionally, the parts of the second pane surface 3 onto which the extruded sealing profile 8 is to be applied are activated. Preferably, this is done using atmospheric plasma. The adhesion promoter 7, onto which the sealing profile 8 is then extruded directly, can be applied on the activated region. By means of the direct extrusion, a particularly stable bond is produced between the sealing profile 8 and the coated second pane surface 3.
LIST OF REFERENCE CHARACTERS
[0061] I polymeric pane
[0062] 1 polymeric main body
[0063] 2 first pane surface
[0064] 3 second pane surface
[0065] 4 pane edge
[0066] 5 protective coating
[0067] 6 edge region of the pane
[0068] 7 adhesion promoter
[0069] 8 extruded sealing profile
[0070] 9 black print
[0071] 10 opaque material phase
[0072] a distance between the sealing profile and the pane edge
[0073] d thickness of the polymeric main body
