EP1811114B1 - All glass corner made of insulation glass - Google Patents

Abstract

The corner has two insulation glass parts (2, 4) colliding with each other at an angle under formation of a corner arrangement. Each of the insulation glass parts has two windowpanes (6a, 8a, 6b, 8b), which are connected by distance maintaining parts (10a, 10e) under formation of continuous pane spaces (12a, 12b) filled with gas. The two insulation glass parts collide with each other such that they form continuous pane spaces in a collided area.

Description

The present invention relates to an all-glass corner made of insulating glass or an insulating glass corner for a glass facade of a building.

Building façades are often built completely from insulating glass, following the zeitgeist. For aesthetic reasons, you often do without corner profiles on building corners. Instead, one forms the corners of a building as Ganzglasecken of insulating glass or as Isolierglasecken, with insulating glasses are pushed directly into the building corners. Instead of corner profiles take over corner arranged point holder the task to remove horizontal and vertical loads in the substructure of the building. Architecturally, such all-glass corners offer not only an aesthetic value, which is due to an uninterrupted look in the building corners, but also a gain in light incidence.

Are known all-glass corners of insulating glass, which are each made of two insulating glass symmetrical. The two insulating glass are each designed with, for example, an outer glass pane which projects beyond an inner glass pane, which together with the outer glass pane and a spacer, for example made of aluminum, steel or stainless steel, with the two glass panes to form a gas with a either air or inert gas, such as argon, xenon or krypton-filled disc space is bonded, which forms insulating glass. For example, collided at a right angle to a corner assembly, form the two insulating glasses at their butt ends a cavity which is necessarily sealed on both the inside and on the outside of the whole glass corner by means of a sealing arrangement to the effect of a heat bridge formed at the butt ends of the insulating glass to reduce. Due to the thermal bridge, condensation can form on the inside of the whole glass corner at low outside temperatures. In addition, the sealed cavity ensures not only a thermal insulation but also a vapor pressure equalization from the inside to the outside of the whole glass corner to counteract condensation on the inside of the whole glass corner.

There are also all-glass corners made of insulating glass known, which are each made symmetrical from two insulating glass, for example, form the inner glass sheets exclusively a fold. Here, an angled or round cover profile is connected to the outer glass panes of the insulating glass to form a heat-insulating cavity at the butt ends of the insulating glass analogous to the previously described all-glass corners.

In addition, all-glass corners made of insulating glass are known, which are each designed asymmetrically from two nested insulating glass. In this case, one of the two insulating glasses can be designed such that, for example, an outer glass pane protrudes slightly more than the amount of the thickness of the other insulating glass over an inner glass pane, while the other insulating glass is designed with two equal length glass panes, so that the butt ends of let both insulating glass into each other.

On the other hand, the two insulating glasses can be designed in each case with, for example, an outer glass pane projecting beyond an inner glass pane in order to be placed inside one another.

In both asymmetrical embodiments, a sealed cavity is formed by the connection of the butt ends of the insulating. Such intertwined Ganzglasecken represent common, glass technically simple solutions.

Common to all these all-glass corners is that they are physically difficult to treat as fundamentally problematic, since they represent thermal bridges whose effect can not be compensated despite the respective formation of a sealed cavity at the butt ends of two insulating glasses. Consequently, in the known all-glass corners must always be expected with a condensation on their inner sides.

Moreover, it is disadvantageous in these all-glass corners that their Ganzglascharakter each by a conventional sealing arrangement at the butt ends of two insulating glasses in combination is partially lost again with each adjacent to this sealing arrangement arranged spacer parts of the two insulating.

The invention is therefore based on the object to provide a full glass corner of insulating glass, which better insulates heat in the area of the butt ends of their two insulating glass.

The invention is also based on the object of providing a glass blanket made of insulating glass which prevents condensation on the inside of the whole glass corner.

In addition, the invention has for its object to provide a full glass corner of insulating glass with respect to the known all-glass corners better Ganzglascharakter.

In addition, the invention has for its object to provide a full glass corner of insulating glass for a glass facade of a building.

The solution of the invention is carried out according to the invention with the features specified in the patent claims 1 and 12. Preferred embodiments of the invention are subject of the dependent claims.

The all-glass corner of insulating glass according to the invention comprises two Isolierglasteile collided at an angle and forming a corner assembly, each having at least two glass sheets, which are connected by means of spacer members to form a space filled with a gas disc space.

According to the invention, the two insulating glass parts collide in such a way that they form a continuous gas-filled space between the panes in the area of their butt ends.

Basically, as gas for filling the space between the panes, as already mentioned in the description of the prior art, either air or noble gas, such as argon, xenon or krypton, in question.

In comparison with the known all-glass corners made of insulating glass, in the all-glass corner according to the invention in the region of the butt ends of its two insulating glass parts, no thermal bridge is created by the space between the panes filled with gas in this area, causing condensation on the inside of the whole glass corner at correspondingly low outside temperatures can.

In addition, the omission of the conventional sealing arrangement at the butt ends of two insulating glasses in conjunction with the elimination of each adjacent to this sealing arrangement arranged spacer members of the two insulating improves the appearance or the aesthetic effect of Ganzglasecke invention with respect to their Ganzglascharakter.

The glass façade according to the invention for a building comprises a multiplicity of the all-glass corners made of insulating glass according to the invention.

In a preferred embodiment of the all-glass corner according to the invention, the glass panes are mitred at their butt ends. The glass sheets are preferably reinforced in such a way that the ratio of miter depth to glass sheet thickness is less than or equal to a value of 2.

In a particularly preferred embodiment of the all-glass corner according to the invention, the abutting surfaces of the glass panes are each provided with a shoulder, so that the butt ends of the collided glass panes each form a fold, which is widened towards the space between the panes.

At the abutting ends of the two insulating glass parts, the spacer parts arranged between the glass panes are preferably connected to one another in a form-fitting manner by means of a spring-groove connection. In principle, the spacer parts can also be glued or welded together at the butt ends of the two insulating glass parts.

In a further particularly preferred embodiment of the all-glass corner according to the invention, the abutting surfaces of two collided glass panes are connected to one another by means of a glued adhesive tape on both sides. For optical reasons, the adhesive strip is advantageously transparent. Transparent means that the material of the adhesive tape is similar to glass in terms of light transmission, so that visible light penetrates the adhesive tape without being substantially absorbed by it. The thickness of the adhesive strip is preferably 2 to 3 mm.

In principle, these abutting surfaces can also be glued together by means of a preferably neutral-crosslinking, one-component hot-melt adhesive, preferably based on silicone. In this case, such an adhesive is injected into the folds formed by the butt ends of the two Isolierglasteile.

In a further preferred embodiment of the all-glass corner according to the invention, the thickness of the glass panes is preferably 3 to 19 mm, in particular 4 to 12 mm. Advantageously, the glass panes of the two insulating glass parts are designed as tempered float glass or single-pane safety glass (ESG). In principle, however, other types of glass, such as laminated safety glass (VSG), laminated glass and the like, are conceivable as glass panes for the two insulating glass parts.

The folds formed on the inside and on the outside of the all-glass corner according to the invention by the butt ends of the glass panes are preferably sealed by means of silicone. Alternatively, cover profiles are conceivable for sealing the folds.

Figur 1

eine perspektivische Ansicht der erfindungsgemäßen Ganzglasecke in schematischer Darstellung,

Figur 2

eine Schnittansicht der erfindungsgemäßen Ganzglasecke aus Figur 1 entlang der Linie X - X,

Figur 3

einen Ausschnitt einer alternativen Ausführungsform der erfindungsgemäßen Ganzglasecke aus Figur 2 und

Figur 4

einen Ausschnitt einer metallischen Form mit darin lose eingelegten Glasscheiben in einer schematischen Schnittdarstellung, wobei die metallische Form innerhalb eines strichpunktiert dargestellten Druckkessels angeordnet ist.

An embodiment of the all-glass corner according to the invention will be explained in more detail with reference to drawings. Show it

FIG. 1

a perspective view of the whole glass corner according to the invention in a schematic representation,

FIG. 2

a sectional view of the whole glass corner according to the invention FIG. 1 along the line X - X,

FIG. 3

a section of an alternative embodiment of the whole glass corner of the invention FIG. 2 and

FIG. 4

a section of a metallic mold with loosely inserted glass panes in a schematic sectional view, wherein the metallic form is disposed within a pressure vessel shown in phantom.

Two insulating glass parts 2, 4 collided into a right-angled corner arrangement, each having two prestressed float glass panes 6a, 8a, 6b, 8b made of metal, in particular stainless steel, by means of spacer parts 10a, 10b, 10c, 10d, 10e, 10f filled with argon The space between the panes 12a, 12b is, according to the invention, in the area of their butt ends, a continuous cavity filled with argon 12a, 12b. The float glass panes 6a, 8a, 6b, 8b are mitred at their butt ends ( FIG. 2 ). In each case two collided float glass panes 6a, 8a, 6b, 8b are partially glued together at their abutment surfaces 18a, 18b, 20a, 20b by means of a transparent, adhesive adhesive tape 22, 24 on both sides. The spacer members 10a, 10b, 10c, 10d, 10e, 10f are positively connected and peripherally connected with respect to the corner assembly. At the abutting ends of the two insulating glass parts 2, 4, the spacer parts 10c, 10d and 10a, 10f are each plugged together in a form-fitting manner by means of a corner part. The spacer members 10a, 10c, 10d, 10f are advantageously provided at their corner-side ends, each with a groove into which the corner part can be inserted. The circumferential edge joint 14 formed in the connection of the float glass panes 6a, 8a, 6b, 8b to the spacer elements 10a, 10b, 10c, 10d, 10e, 10f is sealed by means of the usual sealant 16, so that the interpane space 12a, 12b is sealed gas-tight. The folds 26, 28 formed both on the inside and on the outside of the whole glass corner by the butt ends of the float glass panes 6a, 8a, 6b, 8b are each preferably opposite the environment by means of a silicone layer 30, 32 sealed to give the insulating glass assembly the desired gas barrier, in particular water vapor barrier outside of the folds 26, 28.

The adhesive strips 22, 24 are made of pure acrylate and have almost the same refractive index as glass. This material has an elongation at break according to DIN ISO 527-3 of more than 800% and a shear strength on steel in accordance with DIN EN 1939 of 30 N / 25 mm and can be used in a wider temperature range. Because of its high transparency and good adhesiveness to glass, it can be used excellently for gluing glass corners.

For the silicone layer 30, 32, the below-mentioned silicone-based hot melt adhesive is contemplated, so that reference is hereby made.

In the presentation of FIGS. 1 and 2 the insulating glass parts are arranged at a right angle to each other. This arrangement represents only one possibility of angular selection. However, the angle can be selected according to the intended use between 10 and 170 °, without departing from the inventive concept.

In an alternative embodiment of the all-glass corner according to the invention, which in FIG. 3 1, the jointed abutment surfaces of the float glass panes 6a, 8a, 6b, 8b are each slightly offset, so that the butt ends of the collided glass panes 6a, 8a, 6b, 8b each form a fold 26, 28, which widens towards the space between the panes 12a, 12b is. These paragraphs serve to position the adhesive strips 22, 24 on the abutting surfaces of the float glass panes 6a, 8a, 6b, 8b.

In a further alternative embodiment of the invention, the abutment surfaces 18a, 18b, 20a, 20b of the float glass panes 6a, 8a, 6b, 8b are not interconnected by means of a plurality of adhesive strips 23, 24 but by means of a preferably neutral-crosslinking, one-component hot-melt adhesive, preferably based on silicone glued, whereby the above-described bonding and sealing of the folds 26, 28 formed by the butt ends of the float glass panes 6a, 8a, 6b, 8b is replaced therewith by the adhesive strips 22, 24 and the silicone 30, 32, since the hot melt adhesive is the float glass panes 6a, 8a, 6b, 8b not only continuously bonded together, but at the same time the folds 26, 28 sealed.

This hot-melt adhesive, in particular silicone-based, has the following properties: a viscosity at + 120 ° C of preferably 210,000cs, a processing time of preferably 15min, an initial strength after 15min of preferably 18psi, an initial strength after 60min of preferably 28psi, a Shore A hardness from 40 to 80, preferably 60, according to ASTM C 661 (ASTM: American Society for Testing and Materials), a minimum tensile strength of 0.3 to 0.4 MPa, preferably 0.35 MPa, according to ISO 8340, an elongation at break of 500 to 850% according to ISO 8340, a movement uptake of ± 10 to ± 25% according to ASTM C 719, an excellent weather resistance according to ASTM C 793, a specific gravity of 0.9 to 1.1 g / ml, preferably 1.051 g / ml and a temperature resistance of preferably -50 ° C to + 93 ° C, especially from -32 ° C to + 93 ° C.

In addition, these adhesive systems, particularly the hot melt adhesive, are transparent, preferably crystal clear, so that the material of the adhesive is similar to glass in terms of light transmission, with visible light penetrating the adhesive without substantially being absorbed by it.

The hot-melt adhesive is applied in the liquid state to the abutment surfaces 18a, 18b, 20a, 20b of the float glass panes 6a, 8a, 6b, 8b at a processing temperature of 120 ° C., which corresponds to the melting temperature of the adhesive, or in the collapsed state of the float glass panes 6a, 8a, 6b, 8b defined in the folds 26, 28 in which this also remains after the abutting surfaces of the float glass panes 6a, 8a, 6b, 8b previously thoroughly cleaned and foreign matter and impurities such as grease, oil, dust, water and other contaminants have been removed. The hot-melt adhesive reacts after solidification to a weather-resistant, flexible and permanently elastic material.

In a further alternative embodiment of the invention, the abutment surfaces 18a, 18b, 20a, 20b of the float glass panes 6a, 8a, 6b, 8b are neither by means of adhesive tape nor by means of a hot-melt adhesive, but by means of plastic strips 36 of a thermoplastic such as EVA, polyvinyl butyral PVB, a thermoplastic polyester udgl. glued together using heat Q and pressure p ( FIG. 4 ), wherein these plastic strips 36 are non-adhesive as such in their initial state before the heat treatment of the float glass panes 6a, 8a, 6b, 8b. In contrast to the preceding, in this embodiment of the invention, the float glass panes 6a, 8a, 6b, 8b are first glued together by means of these plastic strips 36 by means of heat treatment and subsequently further processed to form the all-glass corner according to the invention.

With reference to the schematic representation in FIG FIG. 4 this happens as follows. In each case, two float glass panes 6a, 8a, 6b, 8b to be glued together are placed in a metal mold, which in FIG. 4 is shown schematically in a sectional view together with the float glass panes 6a, 8a, 6b, 8b. The parts 34 of the metal mold which carry the float glass panes 6a, 8a, 6b, 8b and which are in FIG. 4 are shown only partially, are preferably formed as ribs. These ribs 34 are arranged in such a way to each other that they give the metal mold a v-shape. The metal mold has a multiplicity of such ribs 34 along its longitudinal axis-that is to say along an axis running perpendicular to the symmetry axis S of the metal mold and extending into the figure-plane. The bearing surfaces 34a of the ribs 34 are preferably coated with Teflon. Basically, instead of the ribs 34, two plates arranged in a V-shape relative to one another for receiving the float glass panes 6a, 8a, 6b, 8b are also conceivable. Before inserting the float glass panes 6a, 8a, 6b, 8b into the metal mold, a correspondingly cut plastic strip 36 is inserted into a preferably U-shaped holder 38 provided at the lower end 40 of the metal mold, so that the float glass panes 6a, 8a, 6b , 8b, after they have been inserted into the metal mold, due to their own weight along the support surfaces 34a of the ribs 34 slide down and thereby with a portion of their own weight on their abutment surfaces 18a, 18b, 20a, 20b against the plastic strip 36 and over Press this against each other. Subsequently, this metal mold for bonding the float glass panes 6a, 8a, 6b, 8b is introduced into an autoclave or pressure vessel 42. In this autoclave 42, the float glass panes 6a, 8a, 6b, 8b are exposed to a temperature of about 130-140 ° C. and an internal pressure of about 20-25 bar over a period of about 4 hours. At the same time, he connects Plastic strip 36 with the float glass panes 6a, 8a, 6b, 8b to a highly transparent or crystal clear unit. Finally, the plastic of the plastic strip 36 protruding beyond the bonding at the connection point of the float glass panes 6a, 8a, 6b, 8b is removed. This embodiment of the invention is characterized by a particularly high-strength and highly rigid adhesive bond of the float glass panes 6a, 8a, 6b, 8b.

In detail, this plastic based on a modified PVB according to the invention has the following physical properties: property unit value ASTM test tensile modulus MPa (kpsi) 300 (43.5) D5026 tensile strenght MPa (kpsi) 34.5 (5.0) D638 strain % 400 D638 density g / cm ³ (lb / in ³ ) 0.95 (0.0343) D792 Flexural modulus 23 ° C (78 ° F) MPa (kpsi) 345 (50) D790 Heat resistance at 0.46 MPa ° C (° F) 43 (110) D648 Thermal expansion coefficient (-20 ° C to 32 ° C) - 10 - 15 x 10 ^-5 / ° C D696 ASTM: American Society for Testing and Materials

Claims (13)

1. All-glass corner unit of insulating glass having two insulating-glass portions (2, 4) which are butted together at an angle to form a corner arrangement and which each have at least two panes of glass (6a, 8a, 6b, 8b) which are connected by means of spacer parts (10a, 10b, 10c, 10d, 10e, 10f) to form an intervening space (12a, 12b) between the panes which is filled with a gas, characterised in that the two insulating-glass portions (2, 4) are butted together in such a way that, in the region of their abutting ends, they form a continuous intervening space (12a, 12b) between the panes which is filled with gas.
2. All-glass corner unit of insulating glass according to claim 1, characterised in that the panes of glass (6a, 8a, 6b, 8b) are produced to be mitred at their abutting ends.
3. All-glass corner unit of insulating glass according to claim 2, characterised in that the panes of glass (6a, 8a, 6b, 8b) are each mitred in such a way that the ratio of the depth of the mitring to the thickness of the panes of glass is equal to or less than a value of 2:1.
4. All-glass corner unit of insulating glass according to claim 2 or 3, characterised in that the abutting surfaces (18a, 18b, 20a, 20b) of the panes of glass (6a, 8a, 6b, 8b) are each provided with a step, thus causing the abutting ends of the panes of glass (6a, 8a, 6b, 8b) which are butted together each to form a recess (26, 28) which widens out towards the intervening space (12a, 12b) between the panes.
5. All-glass corner unit of insulating glass according to one of claims 1 to 4, characterised in that the spacer parts (10a, 10c, 10d, 10f) are connected together at the abutting ends of the two insulating-glass portions (2, 4) by means of a tongue-and-groove joint.
6. All-glass corner unit of insulating glass according to one of claims 1 to 5, characterised in that the abutting surfaces (18a, 18b, 20a, 20b) of each pair of panes of glass (6a, 8a, 6b, 8b) which are butted together are connected together by means of an adhesive strip which is adhesive on both sides or by means of a hot-melt adhesive.
7. All-glass corner unit of insulating glass according to one of claims 1 to 5, characterised in that the abutting surfaces (18a, 18b, 20a, 20b) of each pair of panes of glass (6a, 8a, 6b, 8b) which are butted together are connected together by means of an adhesive strip (36) by the application of heat (Q) and pressure (P).
8. All-glass corner unit of insulating glass according to claim 6 or 7, characterised in that the respective adhesive-bonded joints are of a transparent form.
9. All-glass corner unit of insulating glass according to one of claims 6 to 8, characterised in that the thickness of the adhesive strip (22, 24) is 2 to 3 mm.
10. All-glass corner unit of insulating glass according to one of claims 1 to 9, characterised in that the thickness of the panes of glass is 3 to 19 mm, and in particular 4 to 12 mm.
11. All-glass corner unit of insulating glass according to one of claims 1 to 10, characterised in that the panes of glass (6a, 8a, 6b, 8b) are in the form of prestressed float glass
12. All-glass corner unit of insulating glass according to one of claims 1 to 11, characterised in that the recesses (26, 28) which are formed by the abutting ends of the panes of glass (6a, 8a, 6b, 8b) are sealed by means of silicone (30, 32) on the inside and outside of the all-glass corner unit.
13. Glass facade for a building, having a plurality of all-glass corner units of insulating glass according to one of claims 1 to 12.

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