Abstract
An insulating glazing includes first and second panes, a spacer, a glazing interior, and an outer interpane space. The first pane is attached to a first pane contact surface and a first side surface of the spacer, the second pane is attached to a second pane contact surface and a second side surface of the spacer, the spacer includes a polymeric main body and a reinforcing profile including an inner face, an outer face, and two side surfaces, the inner face of the reinforcing profile is materially joined at least in some sections to the outer surface of the polymeric body and the width of the reinforcing profile is less than or equal to the width of the polymeric body, and no outer seal is introduced into the outer interpane space, and the outer face of the reinforcing profile is an exposed surface of the insulating glazing facing the surroundings.
Claims
1. An insulating glazing comprising a first pane, a second pane, a circumferential spacer comprising at least one polymeric main body and surrounding the first and second panes, a glazing interior adjacent a glazing interior surface of the polymeric main body, and an outer interpane space adjacent an outer surface of the polymeric main body, wherein the first pane is attached to a first pane contact surface and a first side surface of the spacer, the second pane is attached to a second pane contact surface and a second side surface of the spacer, the spacer comprises the at least one polymeric main body comprising two pane contact surfaces, the glazing interior surface, and the outer surface and a reinforcing profile comprising an inner face, an outer face, and two side surfaces, the inner face of the reinforcing profile is materially joined at least in some sections to the outer surface of the at least one polymeric main body and a width of the reinforcing profile is less than or equal to a width of the at least one polymeric main body, and no outer seal is introduced into the outer interpane space and the outer face of the reinforcing profile is an exposed surface of the insulating glazing facing the surroundings.
2. The insulating glazing according to claim 1, wherein the reinforcing profile is materially joined at least in some sections to the at least one polymeric main body by an adhesive and/or a sealant.
3. The insulating glazing according to claim 1, wherein the reinforcing profile is coextruded with the at least one polymeric main body.
4. The insulating glazing according to claim 1, wherein the reinforcing profile is implemented in the form of a counter profile, whose shape is adapted to the outer surface of the at least one polymeric main body.
5. The insulating glazing according to claim 1, wherein at least one section of the outer surface of the at least one polymeric main body adjacent the two pane contact surfaces is inclined at an angle of 20° to 70° relative to the outer surface in a direction of the two pane contact surfaces and the reinforcing profile is implemented as a counter profile, whose inner face enables a flush connection to the outer surface of the at least one polymeric main body and whose outer face runs substantially parallel to the glazing interior surface.
6. The insulating glazing according to claim 1, wherein the reinforcing profile is set back relative to the two pane contact surfaces of the at least one polymeric main body by in each case 0.0 mm to 1.5 mm relative to the first pane contact surface and/or the second pane contact surface in a direction of the surface center of the outer surface.
7. The insulating glazing according to claim 1, wherein a wall thickness of the reinforcing profile is 0.5 mm to 5.0 mm.
8. The insulating glazing according to claim 1, wherein the at least one polymeric main body contains polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably polyethylene terephthalate (PET), 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.
9. The insulating glazing according to claim 1, wherein the reinforcing profile comprises plastics and/or metals.
10. The insulating glazing according to claim 1, wherein a barrier film is attached to the outer surface of the at least one polymeric main body.
11. The insulating glazing according to claim 1, wherein a sealant, preferably butyl rubber, polyisobutylene, polyethylene vinyl alcohol, ethylene vinyl acetate, polyolefin rubber, copolymers, and/or mixtures thereof, is attached between the first pane contact surface and the first pane and/or the second pane contact surface and the second pane, and an adhesive, is attached between the first side surface and the first pane and/or the second side surface and the second pane.
12. A method for producing an insulating glazing according to claim 1, comprising: a) providing a spacer, b) attaching a first pane to the first pane contact surface of the polymeric main body and the first side surface of the reinforcing profile, and attaching a second pane to the second pane contact surface of the polymeric main body and the second side surface of the reinforcing profile, c) pressing the pane assembly to form an insulating glazing.
13. A method comprising providing an insulating glazing according to claim 1 as building glazing or façade glazing.
14. The insulating glazing according to claim 6, wherein the reinforcing profile is set back relative to the two pane contact surfaces of the at least one polymeric main body by in each case 0.3 mm to 1.2 mm relative to the first pane contact surface and/or the second pane contact surface in the direction of the surface center of the outer surface.
15. The insulating glazing according to claim 7, wherein the wall thickness of the reinforcing profile is 0.5 mm to 2.0 mm.
16. The insulating glazing according to claim 8, wherein the plastics comprise polyethylene terephthalate (PET), styrene acrylonitrile (SAN), acrylonitrile butadiene styrene (ABS), acrylonitrile styrene acrylester (ASA), acrylonitrile butadiene styrene/polycarbonate (ABS/PC), styrene acrylonitrile/polycarbonate (SAN/PC), and/or copolymers or mixtures thereof.
17. The insulating glazing according to claim 8, wherein the metals comprise aluminum and/or stainless steel.
18. The insulating glazing according to claim 8, wherein the barrier film comprises one or more polymeric, metallic, and/or ceramic layers.
19. The insulating glazing according to claim 18, wherein the barrier film comprises multiple polymeric layers arranged alternatingly with metallic layers and/or ceramic layers.
20. The insulating glazing according to claim 9, wherein the adhesive is an an acrylate adhesive and/or a polyurethane adhesive.
Description
[0090] The invention is explained in detail in the following with reference to drawings. The drawings are purely schematic representations and are not to scale. They in no way restrict the invention. They depict:
[0091] FIG. 1a a schematic representation of the spacer of the insulating glazing according to the invention having a reinforcing profile as a counter profile of a main body with an angled outer surface,
[0092] FIG. 1b a schematic representation of the insulating glazing according to the invention with a spacer according to FIG. 1a,
[0093] FIG. 2 another embodiment of an insulating glazing according to the invention with a reinforcing profile as a counter profile that has legs that are extended all the way to the pane contact surfaces of the main body,
[0094] FIG. 3 the insulating glazing of FIG. 1b, wherein, on the outer face of the reinforcing profile, a pressure equalization body is inserted on the outer surface,
[0095] FIG. 4 another embodiment of an insulating glazing according to the invention with a flat profile as a reinforcing profile and a main body with an angled outer surface,
[0096] FIG. 5 an embodiment of an insulating glazing according to the invention with a flat profile as a reinforcing profile and a main body with a planar outer surface,
[0097] FIG. 6 an embodiment of an insulating glazing according to the invention with a U-shaped reinforcing profile and a main body with a planar outer surface, wherein the legs of the reinforcing profile enclose sub-regions of the pane contact surfaces, and
[0098] FIG. 7 an embodiment of an insulating glazing according to the invention with a U-shaped reinforcing profile and a main body with a planar outer surface, wherein the legs of the reinforcing profile point in the direction of the outer interpane space.
[0099] FIG. 1a depicts a schematic representation of the spacer 5 of the insulating glazing according to the invention comprising a polymeric main body 5.1 and a reinforcing profile 5.2 as a counter profile. The polymeric main body 5.1 is a hollow body profile comprising two pane contact surfaces 7.1 and 7.2, a glazing interior surface 8, an outer surface 9, and a cavity 10. The polymeric main body 5.1 contains styrene acrylonitrile (SAN) and approx. 35 wt.-% glass fiber. The outer surface 9 has an angled shape, with the sections of the outer surface adjacent the pane contact surfaces 7.1 and 7.2 inclined at an angle of 30° relative to the pane contact surfaces 7.1 and 7.2. This improves the stability of the glass-fiber-reinforced polymeric main body 5.1. The glazing interior surface 8 of the spacer 5 has openings 12, which are provided at regular intervals circumferentially along the glazing interior surface 8 to enable a gas exchange between the interior of the insulating glazing and the cavity 10. Thus, any humidity present in the interior can be absorbed by a desiccant that can be introduced into the cavity 10. The openings 12 are implemented as slots with a width of 0.2 mm and a length of 2 mm. A barrier film 14 that encloses the outer surface 9 and projects up to sub-regions of the pane contact surfaces 7.1 and 7.2 is attached to the outer surface 9 of the polymeric main body 5.1. The reinforcing profile 5.2 is applied to the outer surface 9 of the polymeric main body 5.1 that carries the barrier film 14. In this way, the barrier film 14 is protected against damage during transport and installation. The polymeric main body 5.1, the barrier film 14, and the reinforcing profile 5.2 are coextruded, but can, alternatively, also be bonded. The reinforcing profile 5.2 has an inner face 15, which is materially bonded to the barrier film 14, and an outer face 16, which is positioned opposite the inner face 15. The side surfaces 17.1 and 17.2 of the reinforcing profile 5.2 running parallel to the pane contact surfaces 7.1 and 7.2 are set back laterally relative to the pane contact surfaces 7.1 and 7.2 in the direction of the surface centers of the outer face 16 and the outer surface 9. Mechanical loads acting on the insulating glazing are effectively absorbed by the reinforcing profile 5.2. The reinforcing profile 5.2 is set back at the side surfaces 17.1 and 17.2 in each case by 0.5 mm relative to the nearest pane contact surface 7.1 and 7.2 in the direction of the surface center of the outer surface 9. The reinforcing profile 5.2 is made of styrene acrylonitrile (SAN) and approx. 40 wt.-% glass fiber and has a wall thickness, i.e., a thickness, of 1.0 mm. The height of the reinforcing profile 5.2 is 4.0 mm. The reinforcing profile 5.2 is implemented as a counter profile to the polymeric main body 5.1 such that in regions where the outer surface 9 of the main body 5.1 is angled, these regions are filled by the reinforcing profile 5.2. Thus, no undesirable cavities remain at the transition between the main body 5.1 and the reinforcing profile 5.2. The angled design of the sections of the outer surface 9 of the polymeric main body 5.1 that are adjacent the pane contact surfaces 7.1 and 7.2 results in sections of the reinforcing profile 5.2 congruent therewith. In these sections, the inner face 15 of the reinforcing profile 5.2 is inclined toward the main body 5.1 by the corresponding amount of 30°. The corresponding regions of the reinforcing profile 5.2 are thus implemented with a protrusion 5.3 with a triangular contour and can be designed either as solid material, or, as depicted in FIG. 1a, with a cavity. The cavity in this region of the reinforcing profile 5.2 results in weight saving.
[0100] FIG. 1b depicts an insulating glazing according to the invention with a spacer 5 according to FIG. 1a. The spacer 5 according to the invention comprising the polymeric main body 5.1 and the reinforcing profile 5.2 is attached circumferentially between a first pane 1 and a second pane 2 via a sealant 4. The glazing interior 3 adjacent the glazing interior surface 8 of the spacer 5 is defined as the space delimited by the panes 1, 2 and the spacer 5. The outer interpane space 13 adjacent the outer surface 9 of the spacer 5 is a strip-shaped circumferential section of the glazing, which is delimited on one side each by the two panes 1 and 2 and on another side by the spacer 5 and whose fourth edge is open. The glazing interior 3 is filled with argon. The cavity 10 is filled with a desiccant 11. Molecular sieve is used as the desiccant 11. The sealant 4 bonds the pane contact surfaces 7.1 and 7.2 of the spacer 5 to the panes 1 and 2, respectively. The sealant 4 is a primary sealant that serves to seal the glazing interior 3 against the passage of gases and water. Polyisobutylene is introduced in each case as sealant 4 between a pane contact surface 7.1 and 7.2 and the adjacent pane 1 and 2, sealing the gap between pane 1 or 2 and spacer 5. The side surfaces 17.1 and 17.2 of the reinforcing profile 5.2 are bonded to the adjacent panes 1 and 2 of the insulating glazing 20 via an adhesive 6. The adhesive 6 used is, for example, an adhesive tape with polyacrylate adhesive or a two-component silicone adhesive used as a liquid adhesive. These adhesives promote good absorption of mechanical loads by the reinforcing profile 5.2. When a spacer 5 having a reinforcing profile 5.2 is used, a further outer seal in the outer interpane space 13 can be dispensed with completely. Such an outer seal used according to the prior art is usually introduced into the outer interpane space in a thickness of approx. 3 mm to 5 mm. The reinforcing profile 5.2 has a wall thickness of only 1.0 mm such that the edge region of the glazing can be designed narrower, compared to arrangements known in the prior art with external sealing. As a result, the through-vision area of the insulating glazing 20 is enlarged. Moreover, the reinforcing profile 5.2 contributes to a reduced heat transfer coefficient of the edge seal due to its lower height. In addition, the materials preferred for the reinforcing profile 5.2 according to the invention have lower thermal conduction than the external seals usually used. Thus, the thermal conductivity of the insulating glazing 20 can be improved compared to the prior art. The reinforcing profile 5.2 of the spacer 5 ends substantially flush with the pane edges of the first pane 1 and the second pane 2. The spacer 5 according to the invention is easy to use since the assembly of the spacer 5 can be carried out without modification of the tools and equipment used such that no investments have to be made when converting production.
[0101] FIG. 2 depicts another embodiment of an insulating glazing according to the invention with a reinforcing profile as a counter profile. Unless otherwise described, the insulating glazing of FIG. 2 corresponds to the insulating glazing 20 of FIG. 1b, wherein, in deviation therefrom, the reinforcing profile 5.2 has additional legs 5.4, which are extended all the way to the pane contact surfaces 7.1 and 7.2 of the main body 5.1. The legs 5.4 are in each case attached to the reinforcing profile 5.2 at the point of the protrusions 5.3 nearest the glazing interior 3 and extend, starting from them, parallel to the pane contact surfaces 7.1 and 7.2 in the direction of the glazing interior 3. The wall thickness of the reinforcing profile 5.2 is 10 mm in the section of the reinforcing profile parallel to the glazing interior surface 8 of the main body 5.1. The legs 5.4 of the reinforcing profile 5.2 have a wall thickness of 0.5 mm. The polymeric main body 5.1 has recesses 19 on the pane contact surfaces 7.1 and 7.2, into which the reinforcing profile 5.2 is inserted. The barrier film 14 follows the recesses 19 in its course on the outer surface 9 and the pane contact surfaces 7.1, 7.2. The polymeric main body 5.1 has a wall thickness of 1.0 mm. This is also the case in the region of the pane contact surfaces 7.1, 7.2, in which the legs 5.4 rest, wherein, in the region of the pane contact surfaces 7.1, 7.2 which is not covered by the reinforcing profile 5.2, there is a wall thickness of 1.5 mm. The height of the reinforcing profile 5.2 is 6.0 mm in total, of which 2.0 mm is accounted for by the height of the legs 5.4. The reinforcing profile 5.4 according to FIG. 2 further improves the stability of the edge region of the insulating glazing 20 and facilitates the positioning of the reinforcing profile 5.2 on the polymeric main body 5.1.
[0102] FIG. 3 depicts the insulating glazing of FIG. 1b, wherein in addition to the features described there, on the outer face 16 of the reinforcing profile 5.2, a pressure equalization body 18 is inserted substantially flush on the outer face 16. The pressure equalization body 18 extends from the outer face 16 through the reinforcing profile 5.2, passes through the outer surface 9 of the main body 5.1, and extends into the cavity 10 of the main body 5.1. The pressure equalization body 18 is bonded to and sealed on the outer face 16 of the reinforcing profile 5.2 by means of a sealant 4. The pressure equalization body 18 enables pressure equalization between the glazing interior 3 and the surroundings. This makes it possible to compensate for pressure differences between the production site and the installation site of the glazing and to reduce climate loads. A passage of gas between the surroundings and the glazing interior takes place via a capillary 18.1 and a membrane 18.2 situated in the pressure equalization body 18. The capillary 18.1 is divided into two sections, a capillary section facing the surroundings and a capillary section facing the glazing interior. The membrane 18.2 is inserted between the two capillary sections. The combination of the capillary 18.1 and the membrane 18.2 causes particularly effective control of the air flow and reduces the passage of moisture. The air entering the glazing is first guided into the cavity 10 in which the desiccant 11 situated there absorbs any residual moisture in the incoming air. The air thus dehumidified enters the glazing interior 3 through openings in the glazing interior surface 8. Since the pressure equalization body 18 is already integrated into the reinforcing profile 5.2 of the spacer 5, all additional production steps on the part of the insulating glazing manufacturer for retrofitting a pressure equalization body are eliminated.
[0103] FIG. 4 depicts another embodiment of an insulating glazing 20 according to the invention with a flat profile as a reinforcing profile 5.2 and a main body 5.1 with an angled outer surface. The insulating glazing 20 corresponds substantially to the insulating glazing of FIG. 1b, wherein, in contrast thereto, the reinforcing profile 5.2 is implemented as a flat profile with a wall thickness of 2 mm. This embodiment is primarily advantageous in terms of simple manufacture of the reinforcing profile 5.2. However, when bonding the spacer 5 to the panes 1 and 2, care must be taken to fill the volumes located between the inner face 15 of the reinforcing profile 5.2 and the angled regions of the outer surface 9 with adhesive 6 and/or sealant 4. This embodiment is particularly suitable for use of adhesives that can be used in liquid form. Advantageously, the adhesive used in FIG. 1b can be used. Alternatively, the materials used in the prior art for external sealing, for example, polysulfide, can also be used. This is advantageous in order to offer the insulating glazing manufacturer the possibility of using a spacer having a reinforcing profile even without major conversion of plant technology.
[0104] FIG. 5 depicts an embodiment of an insulating glazing 20 according to the invention, which corresponds substantially to the insulating glazing of FIG. 4, wherein, in contrast, the outer surface 9 of the main body 5.1 does not include any angled regions and the reinforcing profile 5.2 is implemented as a flat profile. The glazing interior surface 8, the outer surface 9, the inner face 15, and the outer face 16 run substantially parallel to one another. The spacer 5 of FIG. 5 is simple to produce by using a flat profile as a reinforcing profile 5.2. Moreover, compared to the embodiment of FIG. 4, simplified bonding to the panes 1 and 2 is made possible.
[0105] FIG. 6 describes an embodiment of an insulating glazing 20 according to the invention with a
[0106] U-shaped reinforcing profile 5.2. The insulating glazing 20 of FIG. 6 corresponds substantially to the insulating glazing of FIG. 5, wherein, in contrast, the reinforcing profile 5.2 includes two additional legs 5.4, which extend, starting from the inner face 15 of the reinforcing profile 5.2, in the direction of the glazing interior surface 8 and surround sub-regions of the pane contact surfaces 7.1 and 7.2. The reinforcing profile has a wall thickness of 1.0 mm, which is also present in the region of the legs 5.4. The height of the reinforcing profile 5.2 is 4.0 mm. The polymeric main body 5.1 has, analogous to the embodiment depicted in FIG. 2, recesses 19, into which the reinforcing profile 5.2 is inserted. The legs 5.4 give the reinforcing profile 5.2 improved stability.
[0107] FIG. 7 depicts an embodiment of an insulating glazing 20 according to the invention with a U-shaped reinforcing profile 5.2 and a main body 5.1 with a planar outer surface, wherein the legs 5.4 of the reinforcing profile 5.2 point in the direction of the outer interpane space 13. The reinforcing profile has a wall thickness of 1.0 mm, which is also present in the region of the legs 5.4. The height of the reinforcing profile 5.2 is 2.0 mm. The legs 5.4 give the reinforcing profile 5.2 improved stability. Because of the fact that the U-shaped reinforcing profile 5.2 does not embrace the main body 5.1, the recesses 19 can be dispensed with. The reinforcing profile 5.2 is set back laterally in each case by 0.5 mm relative to the pane contact surfaces 7.1 and 7.2. Moreover, the embodiment of FIG. 7 corresponds to the insulating glazing 20 of FIG. 5.
[0108] In another possible embodiment, the embodiments of FIGS. 6 and 7 are combined, yielding a reinforcing profile 5.2 in the form of a double-T profile. This has four legs 5.4, with two legs 5.4 engaging in recesses 19 of the polymeric main body 5.1 (analogous to FIG. 6) and two legs 5.4 are directed in the direction of the outer interpane space 13 (analogous to FIG. 7). Such a reinforcing profile has improved stability and an enlarged bonding surface.
[0109] In all embodiments depicted in FIGS. 1 to 7, the main body 5.1 and the reinforcing profile 5.2 can optionally be either coextruded or bonded to one another. The barrier film 14 depicted in FIGS. 1 to 7 is merely optional. In particular, in FIGS. 5 to 7, the corners of the polymeric main body 5.1 and/or of the reinforcing profile 5.2 can be rounded.
LIST OF REFERENCE CHARACTERS
[0110] 1 first pane
[0111] 2 second pane
[0112] 3 glazing interior
[0113] 4 sealant
[0114] 5 spacer
[0115] 5.1 polymeric main body
[0116] 5.2 reinforcing profile
[0117] 5.3 protrusions of the reinforcing profile
[0118] 5.4 legs of the reinforcing profile
[0119] 6 adhesive
[0120] 7 pane contact surfaces
[0121] 7.1 first pane contact surface
[0122] 7.2 second pane contact surface
[0123] 8 glazing interior surface
[0124] 9 outer surface
[0125] 10 cavity
[0126] 11 desiccant
[0127] 12 openings
[0128] 13 outer interpane space
[0129] 14 barrier film
[0130] 15 inner face of the reinforcing profile 5.2
[0131] 16 outer face of the reinforcing profile 5.2
[0132] 17 side surfaces of the reinforcing profile 5.2
[0133] 17.1 first side surface of the reinforcing profile 5.2
[0134] 17.2 second side surface of the reinforcing profile 5.2
[0135] 18 pressure equalization body
[0136] 18.1 capillary
[0137] 18.2 membrane
[0138] 19 recesses of the polymeric main body 5.1
[0139] 20 insulating glazing
