INSULATING GLAZING COMPRISING A SPACER, METHOD FOR THE PRODUCTION THEREOF, AND USE THEREOF AS GLAZING IN BUILDINGS

Abstract

An insulating glazing unit having a first pane, a second pane, an outer pane interspace, an inner pane interspace, and a spacer is described. The spacer has a glazing interior surface, a first pane contact surface, and a second pane contact surface, a plastic profile, a primary sealing means, and a main member. The main member contains a sealing material containing a drying material. The plastic profile separates the outer pane interspace from the inner pane interspace. The main member is arranged in the outer pane interspace adjacent the plastic profile and the primary sealing means is arranged in the outer pane interspace adjacent the main member.

Claims

1.-15. (canceled)

16. An insulating glazing unit comprising: a first pane; a second pane; an outer pane interspace; an inner pane interspace; and a spacer comprising: a glazing interior surface; a first pane contact surface; a second pane contact surface; a plastic profile; a primary sealing means; and a main member containing at least one sealing material containing a drying material, wherein: the plastic profile separates the outer pane interspace from the inner pane interspace, the main member is arranged in the outer pane interspace adjacent the plastic profile, and the primary sealing means is arranged in the outer pane interspace adjacent the main member.

17. The insulating glazing unit according to claim 16, further comprising a third pane arranged between the first pane and the second pane, wherein: the glazing interior surface comprises a first glazing interior surface and a second glazing interior surface, the plastic profile comprises: a first plastic profile on the first glazing interior surface between the first pane and the third pane; and a second plastic profile on the second glazing interior surface between the third pane and the second pane, the main member is arranged between the first pane and the second pane, and the third pane protrudes into the main member in a region between the first plastic profile and the second plastic profile.

18. The insulating glazing unit according to claim 16, wherein: the first pane contact surface and the second pane contact surface surround the plastic profile and the primary sealing means, and the primary sealing means encloses the main member on three sides.

19. The insulating glazing unit according to claim 16, wherein the plastic profile comprises at least one opening to enable gas and moisture exchange between the main member and the inner pane interspace.

20. The insulating glazing unit according to claim 19, wherein the at least one opening comprises a plurality of openings.

21. The insulating glazing unit according to claim 16, wherein: in the outer pane interspace between the first pane and the second pane, a secondary sealing means is arranged adjoining the primary sealing means, the secondary sealing means comprising a polymer or silane-modified polymer.

22. The insulating glazing unit according to claim 21, wherein the secondary sealing means comprises one or more of organic polysulfides, silicones, room-temperature vulcanizing silicone rubber, high-temperature vulcanizing silicone rubber, peroxide vulcanizing silicone rubber, and/or addition vulcanizing silicone rubber, polyurethanes, or butyl rubber.

23. The insulating glazing unit according to claim 17, wherein the third pane protrudes into the main member through a partial height of the main member relative to an entire height of the main member.

24. The insulating glazing unit according to claim 23, wherein the partial height is in a range of 20% to 80% of the entire height.

25. The insulating glazing unit according to claim 23, wherein the partial height is in a range of 30% to 60% of the entire height.

26. The insulating glazing unit according to claim 17, wherein the third pane protrudes beyond an entire height of the main member into the main member and/or the third pane protrudes through the primary sealing means.

27. The insulating glazing unit according to claim 26, wherein the third pane protrudes through the primary sealing means.

28. The insulating glazing unit according to claim 26, wherein the third pane protrudes through the secondary sealing means.

29. The insulating glazing unit according to claim 16, wherein the main member contains a sealing material and a desiccant.

30. The insulating glazing unit according to claim 29, wherein the sealing material comprises a hot-melt adhesive, polyisobutylene, and/or butyl rubber.

31. The insulating glazing unit according to claim 29, wherein the desiccant comprises silica gels, molecular sieves, CaCl.sub.2, Na.sub.2SO.sub.4, activated carbon, silicates, bentonites, zeolites, and/or mixtures thereof.

32. The insulating glazing unit according to claim 16, wherein the plastic profile contains polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), acrylonitrile butadiene styrene (ABS), acrylonitrile styrene acrylester (ASA), acrylonitrile butadiene styrene/polycarbonate (ABS/PC), styrene acrylonitrile (SAN), PET/PC, PBT/PC, and/or copolymers or mixtures thereof.

33. The insulating glazing unit according to claim 16, wherein the primary sealing means contains butyl rubber, polyisobutylene, polyolefin rubber, copolymers, and/or mixtures thereof.

34. A method for producing the insulating glazing unit according to claim 16, the method comprising: preparing a spacer by coextruding a main member containing a sealing material containing a desiccant and a primary sealing means on a plastic profile, mounting a first pane on a first pane contact surface of the spacer and mounting a second pane on a second pane contact surface such that the plastic profile is arranged on a glazing interior surface of the spacer, and pressing together a pane arrangement composed of the panes and the spacer, thereby producing a stable adhesive bond of the pane arrangement.

35. A method for producing an insulating glazing unit according to claim 17, the method comprising: arranging a first plastic profile between a first pane and a third pane and arranging a second plastic profile, at a same height as the first plastic profile, between the third pane and a second pane, the first plastic profile and the second plastic profile forming a plastic profile at an outer pane interspace of the insulating glazing unit, and coextruding onto the plastic profile a primary sealing means and a main member containing a sealing material with desiccant.

36. A method for producing an insulating glazing unit according to claim 17, the method comprising: coextruding a main member containing a desiccant together with a primary sealing means around at least a third pane, and, simultaneously mounting: at least a first plastic profile on a first glazing interior surface, and a second plastic profile on a second glazing interior surface directly adjacent the main member, mounting a first pane and a second pane on pane contact surfaces of a spacer comprising the at least first plastic profile, the second plastic profile, the main member, and the primary sealing means, and pressing together the at least the first pane, the second pane, the third pane, and the spacer, thereby producing a pane arrangement with a stable adhesive bond.

37. A method, comprising: using of the insulating glazing unit according to claim 16 as a building interior glazing, a building exterior glazing, and/or a faade glazing.

Description

[0041] In the following, the invention is explained in detail with reference to drawings. The drawings are purely schematic representations and not true to scale. They in no way restrict the invention.

[0042] They depict:

[0043] FIGS. 1a and 1b: a schematic representation of the insulating glazing unit according to the invention,

[0044] FIG. 2: a possible embodiment of the insulating glazing unit according to the invention,

[0045] FIG. 3: a possible embodiment of the insulating glazing unit according to the invention,

[0046] FIG. 4: a flowchart of a possible embodiment of a method according to the invention for producing an insulating glazing unit with three panes,

[0047] FIG. 5: a flowchart of a possible embodiment of a method according to the invention for producing an insulating glazing unit with three panes.

[0048] FIGS. 1a and 1b depict a schematic representation of the edge region of an insulating glazing unit according to the invention in cross-section. Between a first pane 1 and a second pane 2 arranged parallel thereto, a circumferential spacer 6, which consists of a plastic profile 9, a main member 11, and a primary sealing means 10, is mounted. The main member 11 contains a sealing material with a desiccant, for instance, butyl with a molecular sieve. The desiccant is represented in the figure by circles. The inner pane interspace 5 adjacent the glazing interior surface 7 of the spacer 6 is defined as the space delimited by the panes 1, 2. The plastic profile 9 separates the inner pane interspace 5 from the outer pane interspace 4. The plastic profile 9 includes, on the glazing interior surface 7, openings 13, to produce a connection between the inner pane interspace 5 and the main member 11 to enable gas exchange and to allow absorption of moisture by the desiccant. In the outer pane interspace 4, a primary sealing means 10, which can be made of the same material as the main member 11, is applied adjacent the main member 11. Adjacent the primary sealing means 10, a secondary sealing means 12, for instance, an organic polysulfide, which serves for adhesive bonding of the two panes 1, 2 and increases the mechanical stability of the insulating glazing unit, is applied in the outer pane interspace 4. The first pane contact surface 8.1 and the second pane contact surface 8.2 are formed by the plastic profile 9, the main member 11, and the primary sealing means 10.

[0049] FIG. 2 depicts a possible embodiment of the insulating glazing unit according to the invention. The structure corresponds in its essential features to the example depicted in FIG. 1a, b. A third pane 3 is arranged between a first pane 1 and a second pane 2. The plastic profile 9 comprises a first plastic profile 9.1 on the first glazing interior surface 7.1 and a second plastic profile 9.2 on the second glazing interior surface 7.2, between which the third pane 3 is arranged. The third pane 3 protrudes into the main member 11 and, in this case, protrudes only by roughly 50% of the entire height h of the main member 11 into the main member 11. The dimensionally stable plastic profile 9 fixes the distances between the first pane 1 and the third pane 3 as well as between the third pane 3 and the second pane 2. The first plastic profile 9.1 and the second plastic profile 9.2 contain openings 13 on the glazing interior surfaces 7.1 and 7.2. The main member 11 contains butyl as a sealing means and a molecular sieve as a desiccant. The primary sealing means 10, which contains pure butyl, is arranged adjacent the main member 11, with the primary sealing means 10 forming a part of the first pane contact surface 8.1 and of the second pane contact surface 8.2 and thus surrounding the main member 11 on three sides. In this arrangement, the adhesive bonding of the panes 1 and 2 is improved, because pure butyl, compared to butyl containing desiccant, has better adhesive properties, which contributes to improved sealing of the system. In the outer pane interspace 4, polysulfide is arranged between the first pane 1 and the second pane 2 as the secondary sealing means 12 adjacent the primary sealing means 10. The secondary sealing means 12 ensures the adhesive bonding of the first pane 1 and the second pane 2 and contributes to the mechanical stability of the entire insulating glazing unit.

[0050] FIG. 3 depicts a possible embodiment of the insulating glazing unit according to the invention. The structure corresponds in its essential features to the example depicted in FIG. 2. The third pane 3 protrudes beyond the entire height h of the main member 11 into the main member 11. The main member 11 is thus divided into two parts and is adjacent the first plastic profile 9.1 in the outer pane interspace 4 between the first pane 1 and the third pane 3, and is adjacent the second plastic profile 9.2 between the third pane pane 3 and the second pane 2. In the outer pane interspace 4, a primary sealing means 10 and a secondary sealing means 12 are arranged adjacent the main member 11. The third pane 3 protrudes through the main member 11 and through the primary sealing means 10 and the secondary sealing means 12.

[0051] FIG. 4 depicts a flowchart of a method for producing an insulating glazing unit comprising three panes. After the preparation and washing of the third pane, two plastic profiles 9.1 and 9.2 are attached to the third pane 3 at the same height. The attachment can be done, for example, using a double-sided adhesive tape that is mounted on the sides of the plastic profiles 9.1 and 9.2. Next, the coextrusion of the main member 11 and the primary sealing means 10 onto the plastic profile 9 comprising 9.1 and 9.2 is done such that the third pane 3 protrudes into the main member 11, and the third pane 3 is provided with a circumferential spacer 6 composed of plastic profiles (9.1, 9.2), main member 11, and primary sealing means 10. This pre-assembled component can now be processed on a conventional double glazing system known to the person skilled in the art, wherein the two outer panes 1 and 2 are mounted on the pane contact surfaces 8.1 and 8.2 of the spacer 6. Optionally, the inner pane interspace 5 can be filled with protective gas. In the last step, the pane arrangement composed of the first pane 1, the second pane 2, the third pane 3, and the spacer 6 is pressed.

[0052] FIG. 5 depicts a flowchart of an alternative method for producing an insulating glazing unit comprising three panes. After the preparation of the third pane 3, it is arranged between the first pane 1 and the second pane 2. The first plastic profile 9.1 is fixed between the first pane 1 and the third pane 3, and the second plastic profile 9.2 is fixed between the third pane 3 and the second pane 2. Next, the main member 11 with the primary sealing means 10 is coextruded onto the plastic profile comprising the first plastic profile 9.1 and the second plastic profile 9.2 in the outer pane interspace 4.

LIST OF REFERENCE CHARACTERS

[0053] 1 first pane

[0054] 2 second pane

[0055] 3 third pane

[0056] 4 outer pane interspace

[0057] 5 inner pane interspace

[0058] 6 spacer

[0059] 7 glazing interior surface

[0060] 7.1 first glazing interior surface

[0061] 7.2 second glazing interior surface

[0062] 8.1 first pane contact surface

[0063] 8.2 second pane contact surface

[0064] 9 plastic profile

[0065] 9.1 first plastic profile

[0066] 9.2 second plastic profile

[0067] 10 primary sealing means

[0068] 11 main member

[0069] 12 secondary sealing means

[0070] 13 openings