EP3529445A1

EP3529445A1 - Insulating glazing unit, in particular triple insulating glazing unit, and method for producing an insulating glazing unit

Info

Publication number: EP3529445A1
Application number: EP17784294.5A
Authority: EP
Inventors: Hans-Werner Kuster; Walter Schreiber; Marc Maurer
Original assignee: Saint Gobain Glass France SAS; Compagnie de Saint Gobain SA
Current assignee: Saint Gobain Glass France SAS
Priority date: 2016-10-18
Filing date: 2017-10-17
Publication date: 2019-08-28
Also published as: US20200056422A1; CA3040198A1; BR112019007421A2; WO2018073201A1; JP2019532203A; KR20190068599A; CN109844254A

Abstract

The invention relates to an insulating glazing unit (100), in particular a triple insulating glazing unit, comprising: at least one spacer (4) shaped to form a peripheral spacer frame (4') and defining an inner region (9); a first outer pane (3a) which is arranged on a first pane contact surface (4.1) of the spacer frame (4') and a second outer pane (3b) which is arranged on a second pane contact surface (4.2) of the spacer frame (4'); at least one central pane (2), which is introduced into at least one intermediate space (7) of at least one retaining profile (1) and which retaining profile (1) is shaped to form a peripheral retaining profile frame (1'), which frames the central pane (2), wherein the central pane (2) is arranged with the retaining profile frame (1') within the inner region (9) of the spacer frame (4') and between the outer panes (3a, 3b).

Description

Insulating glazing, in particular a triple insulating glazing, and method for

Production of insulating glazing

The present invention relates to insulating glazing, and more particularly to triple glazing, and to a method of making glazing and its use.

The thermal conductivity of glass is about a factor of 2 to 3 lower than that of concrete or similar building materials. However, since slices are in most cases much thinner than comparable elements made of stone or concrete, buildings often lose the largest proportion of heat through the exterior glazing. The additional costs for heating and air conditioning systems make up a not inconsiderable part of the maintenance costs of a building. In addition, lower carbon dioxide emissions are required as part of stricter construction regulations. An important solution for this is triple-glazing or multi-layer glazing with more than three panes, which are indispensable in building construction, especially in the context of ever faster rising raw material prices and stricter environmental protection regulations. Multiple insulation glazings therefore make up an increasing part of the outward glazing.

Triple insulating glazings typically contain three panes of glass or polymeric materials separated by two individual spacers. It is placed on a double glazing by means of an additional spacer another disc. When mounting such a triple glazing very small tolerances must be met, since the two spacers must be mounted in exactly the same height. Thus, the installation of triple glazing compared to double glazing is much more complex because either additional system components for the installation of another disc must be provided or a time-consuming multiple pass of a classic system is necessary. Such spacers are known, for example, from EP 0 852 280 A1.

WO 2010/1 15456 A1, WO 2014/198431 A1 and WO 2016/046081 A1 disclose hollow profile spacers with a plurality of hollow chambers for multiple glass panes, which comprise two outer panes and one or more central panes. Since the middle discs are each in a groove-shaped receiving profile of the spacer are attached. The spacer can be made both of polymeric materials as well as rigid metals, such as stainless steel or aluminum exist.

The spacers described in WO 2010/1 15456 A1, WO 2014/198431 A1 and WO 2016/046081 A1, which can receive a center disk in a groove, have the advantage that only a single spacer has to be mounted, and thus the step of Adjustment of two individual spacers in the conventional triple glazing is eliminated. To avoid rattling and shaking of the center disc, the center disc is fixed by means of a seal. The seal contains or consists in particular of an adhesive based on butyl, acrylate or hotmelt. At the same time, however, the seal prevents air exchange between the inner space between the panes, since the two panes are hermetically sealed off from one another. This has the disadvantage that between the individual disc spaces no pressure compensation can take place. Temperature differences between the inside of the building facing the space between the panes and the space between the panes and the outside of the building lead to pressure differences between the two panes. If the disc gaps are hermetically sealed, no compensation can take place, resulting in a high mechanical load on the center disc. To increase the stability of the center disc, thicker and / or tempered discs must be used. This leads to increased material and manufacturing costs.

An object of the present invention is therefore to provide an improved, economically and environmentally friendly producible insulating glazing.

The object of the present invention is achieved by an insulating glazing according to the independent claim 1. Preferred embodiments of the invention will become apparent from the dependent claims.

The invention comprises an insulating glazing, comprising at least:

at least one spacer, which is formed circumferentially to a spacer frame and frames an interior area,

a first outer disk disposed on a first disk contact surface of the spacer frame and a second outer disk disposed on a second disk contact surface of the spacer frame; at least one middle plate, which is inserted into at least one intermediate space of at least one holding profile and the holding profile is formed circumferentially to a holding profile frame, which frames the middle plate,

wherein the center disc is arranged with the holding profile frame within the inner region of the spacer frame and between the outer discs.

An advantageous embodiment of the invention is a triple insulating glazing with exactly three panes: a first outer pane, a second outer pane and a center pane. A further advantageous embodiment of the invention is a Vierfachisolierverglasung with exactly four panes: a first outer pane, a second outer pane and two central discs. It is understood that five-fold insulating glazings or insulating glazings according to the invention can also be produced with six and more panes.

The invention thus comprises a module of the central disc, which is anchored in an intermediate space of the holding profile and is framed in full by the holding profile to a holding profile frame.

It is understood that the holding profile and the spacer are two separate and independent components. Retaining profile and spacers are not integrated in a one-piece component. This has the particular advantage that both the spacer and the holding profile in shape and material can be optimally adapted to the respective function. Thus, the spacer can be made of a harder plastic, for example of a glass fiber reinforced plastic, and give the insulating glazing before and during installation in a frame a certain stability. At the same time, the holding profile can be optimized for the stress-free installation of the center disc (s): for example, by choosing a softer plastic, on the one hand the middle disc (s) securely fixed, but still allows a certain movement and yielding thermal expansion of the center disc. At the same time, the holding profile can be constructed in a simple manner so that a slight gas exchange and pressure compensation throughout the interior can take place (for example, by gaps, production tolerances, targeted recesses, openings and holes) and in particular a gas and pressure equalization between a first part inner area (between first Outer pane and center pane) and a second partial inner area (between central pane and second outer pane). This low-tension or stress-free installation, the center plate can be selected thinner than in insulating glazings according to the prior art, which leads to a weight and material savings. Furthermore, the center plate can be provided with functional coatings, which would lead to a one-sided heating of the center disc or the disc space between the center disc and one of the outer discs. By the holding profile according to the invention resulting temperature expansions can be compensated in a wide range.

Since the spacer does not have an immediate holding function with respect to the center disc (s), a cost effective and standardized spacer for double glazing can be used. Such spacers are technically well developed and optimized in terms of their sealing function and their thermal insulation properties. Despite the gas and pressure equalization inside the insulating glazing, the sealing function of the spacer and the hermetic sealing of the interior of the glazing are maintained as in prior art double or multiple glazing. All this was unexpected and surprising to the skilled person.

In an advantageous embodiment, the spacer consists of a first disk contact surface and an oppositely disposed second disk contact surface, which are connected by an inner surface and an outer surface to at least one hollow chamber.

In an advantageous embodiment of a spacer frame according to the invention, the inner region is completely framed by the spacer frame. The interior is the volume bounded by the width, length and height of the interior space of the spacer frame. In the finished insulating glazing, the opposite side surfaces of the spacer are connected to the outer panes, so that the inner area is bounded by the spacer frame and the corresponding areas of the two outer panes.

In an advantageous embodiment, the retaining profile comprises a base body, preferably a rectangular base body, which has two retaining strips on the side facing the center disc, wherein the retaining strips form a gap in which the center disc can be arranged. This has the particular advantage that the retaining strips are very small and visually unobtrusive ausgestaltbar and thus the Retaining profile frame can be designed very lightweight and aesthetically pleasing.

In a particularly advantageous embodiment, the retaining profile consists of a base body, preferably a rectangular base body having on the side facing the middle disc two retaining strips, wherein the retaining strips form a gap in which the center disc can be arranged.

Advantageously, the main body of the holding profile has a height ΙΊΗ of 0.2 mm to 5.0 mm and more preferably from 0.5 mm to 2.0 mm. Advantageously, the main body of the holding profile has a width bH of 10.0 mm to 70.0 mm and particularly preferably from 20.0 mm to 50.0 mm.

Advantageously, the retaining strips have a height hh of 0.1 mm to 7.0 mm, and more preferably from 0.5 mm to 3.0 mm. Advantageously, the retaining strips have a width bh of 0.1 mm to 2.0 mm and more preferably from 0.5 mm to 1, 0 mm. The distance of the retaining strips can vary widely and be adapted to the thickness of the center plate, so that it is securely anchored.

In an advantageous embodiment, the retaining profile comprises a base body, preferably a rectangular base body, wherein on the side facing the center disc side of the base body, a groove is formed, which forms the intermediate space for receiving the center disc. In a particularly advantageous embodiment, the holding profile consists of a base body, preferably a rectangular base body, wherein on the middle disc facing side of the base body, a groove is formed, which forms the intermediate space for receiving the center disc. The width of the groove can vary widely and is adapted to the thickness of the center disc, so that it can be securely attached.

In an advantageous development of the invention, the base body on the side facing the center disc on two, three or more spaces, which serve to receive and fix two, three or more center discs. In this way, a quadruple glazing, five-fold glazing or multiple glazing with a total of more than five panes can be produced in a particularly simple process. In an advantageous embodiment of the invention, the base body on the side facing away from the middle plate at least two spacer strips and preferably four spacer strips. Advantageously, the spacer strips have a height h _a of 0.1 mm to 1 mm and more preferably of 0.2 mm to 0.5 mm. Advantageously, the spacer bars have a width b _a of 0.1 mm to 1 mm and more preferably of 0.2 mm to 0.5 mm.

The spacer strips may be continuous and extend over the entire length of the respective base body of the retaining profile. Alternatively, the distance lines may be interrupted and extend only in sections along the main body of the holding profile. The length of the interruption is preferably from 0.5 mm to 50 cm, particularly preferably 1 cm to 20 cm.

In an advantageous embodiment, the spacer strips or the interrupted spacer strips are arranged on both sides with respect to the intermediate space on the surface of the base body facing away from the intermediate space.

In an advantageous embodiment of the invention, the retaining profile is in one piece and preferably made of solid material, that is, without cavities in the interior of the holding profile is formed.

In an advantageous embodiment of the invention, the retaining profile made of plastic, preferably made of a plastic, which is softer than the material of the spacer.

The holding profile preferably contains polyethylene (PE), polycarbonates (PC), polystyrene, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylic ester-styrene Acrylonitrile (ASA), acrylonitrile-butadiene-styrene - polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, polypropylene (PP), PBT / PC and / or copolymers or mixtures thereof.

The holding profile is particularly preferably composed of polyethylene (PE), polycarbonates (PC), polystyrene, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylic ester Styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene - Polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, polypropylene (PP), PBT / PC and / or copolymers or mixtures thereof.

The holding profile can be glass fiber reinforced. By choosing the glass fiber content in the holding profile of the thermal expansion coefficient of the holding profile can be varied and adjusted. By adjusting the coefficient of thermal expansion of the holding profile, temperature-induced stresses between the different materials can be avoided. The retaining profile preferably has a glass fiber content of 20% to 50%, particularly preferably from 30% to 40%. The glass fiber content in the holding profile simultaneously improves the strength and stability.

The holding profile may consist of a solid material. Alternatively, the retaining profile of a foamed material, in particular a foamed plastic, for example, from the foamed, above-mentioned plastics. By the respective degree of foaming, the hardness of the plastic can be adjusted specifically.

In a further advantageous embodiment of the invention, the retaining profile contains natural or synthetic rubber, preferably butadiene rubber (BR), styrene-butadiene rubber, acrylonitrile-butadiene rubber (NBR), butyl rubber (NR), ethylene-propylene-diene rubber (EPDM), chloroprene rubber (CR) and / or polyisoprene rubber (IR) or consists thereof.

In a further advantageous embodiment of the invention, the retaining profile contains a metal, such as aluminum or stainless steel, or consists thereof.

In an advantageous embodiment of the invention, the holding profile has at least one continuous opening, which connects the middle of the disk facing side of the holding profile with the middle disc side facing away. The openings facilitate gas exchange when filling the insulating glass with inert gas and the diffusion of moisture from the interior to a desiccant in hollow chambers of the spacer. The apertures provide a gas permeable passage from the outside of the retainer profile frame to the interior of the disk. The openings have a preferred size of 0.1 mm x 0.1 mm to 5 mm x 5 mm and may preferably be square, rectangular, circular, elliptical or arbitrarily shaped. In an advantageous embodiment, at least one or at least two or at least three, preferably exactly one or exactly two or exactly three or exactly four or exactly five or exactly six or exactly seven or exactly eight or exactly ten or exactly eleven or exactly twelve openings on each Side with respect to the gap in the main body of the holding profile arranged.

Particularly advantageous is a combination of continuous openings in the holding profile and spacer strips, in particular with interrupted spacer strips, which are arranged only in sections along the main body of the retaining profile. The openings and the interruptions of the spacer strips are arranged, for example, in such a way that a gas exchange between the different (partial) can take place inside areas. In other words, the openings and spacer strips form a channel system through which unimpeded gas exchange can take place.

The openings and / or spacer strips according to the invention in the main body of the holding profile each alone and in particular in combination have a number of particular advantages:

First, you facilitate the escape of air or inert gas from the enclosed space (partial inner area) during assembly of the retaining profile frame with the center disc in the interior of the spacer frame. Furthermore, the gas exchange is facilitated when filling the (partial) interior areas between the panes with inert gas. Furthermore, the diffusion of moisture from the (partial) interior areas between the panes to the desiccant in the hollow chamber of the spacer is facilitated.

Furthermore, pressure fluctuations between the sub-areas are more easily compensated. These are based on the fact that insulating glazing in daily use subject to strong temperature fluctuations and temperature differences between the inside and outside. These arise, for example, from different temperatures in the interior and exterior of the insulating glazing and heating by solar radiation and cooling by shading. In the case of insulating glazings, one of the panes is often coated, for example by an infrared-reflecting coating that is transparent to visible light. For multiple glazing with more than two panes, the inner pane (also called the center pane) is often coated, for example by an infrared-reflective coating, which is visible light is transparent. Such coatings heat up when exposed to sunlight, so that there are particularly large differences in temperature.

Insulated glazing units are typically hermetically sealed to prevent gas and moisture exchange with the environment. The temperature fluctuations to which the insulating glazing is exposed lead to different temperatures in the gas-filled, sealed partial inner regions between the individual panes and thus to a different volume change of the gas in the partial inner regions. This leads to an undesirable mechanical load on the center disc (s) and ultimately to the fact that the center disc (s) must be dimensioned with a greater thickness.

By the system of openings and / or spacer strips, a pressure equalization between the inner parts of the area can be done and the mechanical load on the center disc (s) can be reduced. Therefore, the center disc can be made particularly thin.

The spacer includes a spacer body. The spacer base body preferably comprises polyethylene (PE), polycarbonates (PC), polystyrene, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylic ester-styrene Acrylonitrile (ASA), acrylonitrile-butadiene-styrene - polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, polypropylene (PP), PBT / PC and / or copolymers or blends thereof or consisting thereof.

The spacer body is preferably glass fiber reinforced. By choosing the glass fiber content in the spacer base body, the thermal expansion coefficient of the spacer base body can be varied and adjusted. By adjusting the coefficient of thermal expansion of the spacer base body and the insulating film, it is possible to avoid temperature-induced stresses between the different materials and a break-off of the insulating film. The spacer base body preferably has a glass fiber content of from 20% to 50%, particularly preferably from 30% to 40%. The glass fiber content in the spacer body at the same time improves the strength and stability. The spacer base body preferably has, along the side facing the inner region, a width bA of 10 mm to 70 mm, particularly preferably 20 mm to 50 mm. The exact width bA depends on the dimensions of the glazing and the desired size of the interior. The spacer base body preferably has an overall height of 5 mm to 8 mm, particularly preferably 6.5 mm, along the disc contact surfaces.

The spacer base body preferably has at least one hollow chamber. The spacer preferably has a desiccant. The desiccant may be incorporated either within the hollow chamber or into the spacer body itself. The desiccant can then be filled into the hollow chamber immediately prior to assembly of the glazing. This ensures a particularly high absorption capacity of the desiccant in the finished insulating glazing. The desiccant preferably contains or consists of silica gels, molecular sieves, CaCl ₂ , Na ₂ SO ₄ , activated carbon, silicates, bentonites, natural zeolites, synthetic zeolites and / or mixtures thereof.

In an advantageous embodiment of the invention, the inner area between the outer panes and within the spacer frame with an inert gas, preferably filled with a noble gas and more preferably with argon, krypton or mixtures thereof. As a result, a particularly good thermal insulation (= particularly low heat transfer value) of the insulating glazing can be achieved.

In an advantageous embodiment of an insulating glazing according to the invention

an outer area between an outer surface of the spacer frame and the outer edges of the outer panes completely peripherally contains a seal, preferably of an organic polysulfide and

- The disc assembly of the outer discs and the spacer frame is hermetically sealed.

As a result, insulating glazing with particularly low gas exchange and particularly good thermal insulation can be achieved.

The invention furthermore comprises an insulating glazing comprising at least two outer panes, a spacer circumferentially arranged between the outer panes in the edge region of the outer panes, an internally arranged module comprising a middle pane and a holding profile frame, an adhesive bond having an adhesive with sealing properties and an outer sealing layer. Between the the first outer pane and the first disc contact surface and the second outer disc and the second disc contact surface, an adhesive is attached as a sealant and for stabilization. The spacer frame is set back relative to the outer edges of the outer panes, so that the two outer panes protrude beyond the spacer. The circumferential gap formed in the outer region between spacer and outer panes is filled with a seal, preferably a plastic sealing compound. The exterior space faces the interior and is limited by the two outer panes and the spacer. The seal is in contact with the insulation film of the spacer. The seal preferably contains polymers or silane-modified polymers, particularly preferably polysulfides, silicones, RTV (room temperature curing) silicone rubber, HTV (high temperature cure) silicone rubber, peroxide-crosslinked silicone rubber and / or addition-crosslinked silicone rubber, polyurethanes, butyl rubber and / or polyacrylates.

The outer disks and the middle disk (s) contain materials such as glass, in particular soda-lime glass and / or transparent polymers. The outer disks and the center disk (s) preferably have an optical transparency of> 85%. In principle, different geometries of the outer disks and the center disk (s) are possible, for example rectangular, trapezoidal and rounded geometries. The outer disks and the middle disk (s) preferably have a thermal protection coating. The thermal barrier coating preferably contains silver.

In an advantageous embodiment of the insulating glazing according to the invention, the module of middle plate and retaining profile frame is designed such that a gas and / or pressure exchange between a first part inner region (between the first outer disc and middle disc) and a second partial inner region (between middle disc and second outer disc) can take place.

For this purpose, the retaining profile frame is preferably dimensioned such that the contact surface of the retaining profile frame to the spacer frame recesses or gas-permeable areas, such as gaps, production tolerances or holes has. That is, the retainer profile frame is not sealingly disposed in the spacer frame. Stand alone or in combination, the retaining profile frame in the base body may have openings that allow a gas and pressure exchange. Standalone or in combination, the material of the retaining profile frame can be chosen so soft that a certain pressure equalization by a slight movement of the center disc to one of the outer disks out. Stand alone or in combination, the spacer bars may have interruptions or recesses that allow gas and pressure equalization.

A further aspect of the invention comprises a method for producing an insulating glazing and in particular a triple insulating glazing, wherein at least a) at least one middle disc is inserted into at least one space of at least one holding profile and the holding profile is formed circumferentially to a holding profile frame, which framed the center disc, and

a first outer pane is connected to a first pane contact surface of a spacer, wherein the spacer is formed circumferentially to a spacer frame in the edge region of the first outer pane and an inner area is preferably completely framed,

b) the center disk is arranged with the retaining profile frame in the inner region of the spacer frame,

c) a second outer disk is connected to a second disk contact surface of the spacer, and

d) the disc assembly of the first outer disc, the second outer disc and the spacer frame is pressed together and firmly connected.

This hermetically seals the interior area with the module consisting of center plate and support frame, and the module is securely fastened inside the insulating glazing.

In a refinement of the method according to the invention for producing an insulating glazing according to the invention, after process step c) and before process step d) the inner area between the outer panes is filled with an inert gas, preferably with a noble gas and more preferably with argon, krypton or mixtures thereof.

In a further development of the method according to the invention, after the pane arrangement of the first outer pane, the second outer pane and the spacer frame is closed and pressed together, a seal is circulated peripherally and preferably completely circumferentially in the outer area between the outer surface of the spacer frame and the outer edges of the outer panes. The filling of the inner region with a protective gas can be carried out, for example, by means of two passages arranged on different and preferably opposite sides of the spacer frame, which allow a gas passage from the outside to the inside area and from the inside area to the outside. Thus, the inner air can be sucked off through the first gas passage, and the inert gas can be filled into the inner area through the second gas passage. Both feedthroughs are sealed after filling the protective gas by a sealant and sealed by the seal.

The insulating glazing according to the invention and in particular the triple insulating glazing according to the invention is preferably used in construction and architecture both indoors and outdoors.

In the following the invention will be explained in more detail with reference to drawings and examples. The drawings are purely schematic representations and not to scale. They do not limit the invention in any way. FIG. 1 shows a plan view of a central pane framed by a retaining profile frame; FIG.

a perspective view of a cross section through the framed with a holding profile frame center plate of Figure 1 A;

a detailed representation of a section of the central disc with holding profile; a cross-sectional view of the insulating glazing according to the invention; a schematic representation of an insulating glazing according to the invention during the process according to the invention;

a flowchart of a possible embodiment of the method according to the invention; and

a perspective view of a cross section through an alternative embodiment of a module according to the invention.

Figure 1 A shows a plan view of a framed with a holding profile frame V center plate 2. Figure 1 B shows a perspective view of a cross section through the framed with the holding profile frame V center plate 2 of Figure 1 A. The holding profile frame 1 'consists of four sections of the holding profile 1, which are respectively arranged on the sides of the rectangular center plate 2. The four sections of the retaining profile 1 are connected in the corners of the middle plate 2 each at a 90 ° angle. The main body 1 .1 of the retaining profile 1 has two retaining strips 6, wherein in the view of Figure 1 A only in the plane above retaining strips 6 is visible, since in the projection through the middle plate 2, the retaining strips 6 are arranged congruently one above the other. The edge region of the middle plate 2 is in each case embedded in the recess 7 and is fixed by the retaining strips 6 in the retaining profile frame 1 '.

This results in a module 10 of the center plate 2, which is anchored in the space formed by the retaining strips 6 of the holding profile 1 space 7 and is framed by the support profile 1 in full to a holding profile frame V.

The holding profile 1 consists in this example of a solid base body 1 .1 without cavities in the interior. The retaining profile 1 of base body 1 .1, retaining strips 6 and spacer strips 8 is for example in one piece and made of a single material. The retaining profile 1 consists for example of a solid material, ie the retaining profile 1 is formed without cavities. The holding profile 1 consists for example of foamed styrene-acrylonitrile (SAN). The plastic of the holding profile 1 is chosen so soft that it allows a largely stress-free mounting of the center plate 2, at the same time the middle plate 2 but still securely fixed. The width bH of the main body 1 .1 of the holding profile 1 is for example 20 mm. The thickness, ie the height h _{H of} the main body 1 .1 of the holding profile 1, for example, 1, 5 mm. The height h _{h of} a retaining strip 6 is for example 3 mm, the width bh is for example 1 mm.

FIG. 2 shows a detailed representation of a cross section of a middle plate 2, which is fixed in a holding profile 1. The holding profile has a rectangular base body 1 .1. The base body 1 .1 has on the side facing the central disc 2 two retaining strips 6, which form a gap 7. The middle plate 2 is arranged in the edge region in the intermediate space 7. The main body 1 .1 has, for example, four spacer strips 8 on the side facing away from the middle plate 2. The spacer strips 8 facilitate the sliding of the module 10 from the center plate 2 and retaining profile frame V in the subsequent insulating glazing 100. Furthermore, the spacer strips 8 facilitate the filling of the interior in the insulating glass 100 by a protective gas. The spacer strips 8 may be continuous and over the entire length of the respective holding profile. 1 extend. Alternatively, the distance guides 8 may be interrupted and extend only in sections along the holding profile 1. Furthermore, openings can be arranged in the base body (see FIG. 6).

FIG. 3 shows a schematic representation of an insulating glazing 100 according to the invention using the example of a triple insulating glazing. The insulating glazing 100 comprises a spacer 4, which is formed into a circumferential spacer frame 4 'and completely encloses an inner region 9 along the frame. In the inner region 9, a module 10 of a center plate 2, which is fixed in a holding profile frame V, arranged. The module 10 corresponds for example to the module 10 that is described in FIGS. 1A, 1B and 2. The module 10 divides the inner area 9 into a first partial inner area 9.1 and a second partial inner area 9.2. The first part of the inner area

9.1 is limited by the first outer pane 3a, a portion of the spacer frame 4 'and the center plate 2. The second part of the inner area

9.2 is correspondingly limited by the second outer pane 3b, a portion of the spacer frame 4 'and the middle plate 2. The spacer 4 is a customary spacer for two outer panes in a double insulating glazing, as it is known for example from WO 2016/046081 A1.

The first outer pane 3a of the insulating glazing 100 is connected via an adhesive bond 5 with the first wafer contact surface 4.1 of the spacer 4, while the second outer pane 3b is connected via an adhesive bond 5 with the second wafer contact surface 4.2. The adhesive compound 5 additionally has a sealing effect and consists for example of polyisobutylene or butyl rubber.

The spacer 4 consists for example of a polymeric spacer base body 41, which has at least one hollow chamber 42. The hollow chamber 42 is filled with a desiccant. The desiccant contains, for example, molecular sieves such as natural and / or synthetic zeolites. The spacer base body 41 has, on the surface facing the inner region 9, a multiplicity of openings (not shown here), which allows a gas exchange between the hollow chamber 42 with the desiccant and the inner region 9. As a result, the desiccant can extract moisture from the inner region 9 of the insulating glazing 100, which prevents undesired fogging and increases and thus improves the thermal insulation of the insulating glazing 100. On the outer surface 44 of the spacer 4, that is on the side facing away from the middle plate 2 of the spacer base body 41, an insulating film 43 is applied, which reduces the heat transfer through the polymeric spacer base body 41 in the inner region 9 of the insulating glass 100. The insulating film 43 may be attached to the polymeric spacer body 41, for example, with a polyurethane hot melt adhesive. The insulating film 43 contains, for example, three polymeric layers of polyethylene terephthalate having a thickness of 12 μηι and three metallic layers of aluminum with a thickness of 50 nm. The metallic layers and the polymer layers are each mounted alternately, wherein the two outer layers of polymeric layers be formed. That is, the layer sequence consists of a polymeric layer followed by a metallic layer followed by an adhesive layer, followed by a polymeric layer followed by a metallic layer followed by an adhesive layer followed by a metallic layer followed by a polymeric layer ,

The spacer base body 41 consists for example of glass fiber reinforced styrene-acrylonitrile (SAN). By selecting the glass fiber content in the spacer base body 41, the thermal expansion coefficient of the spacer base body 41 can be varied and adjusted. By adjusting the coefficient of thermal expansion of the spacer base body 41 and the insulating film 43, temperature-induced stresses between the different materials and a spalling of the insulating film 43 can be avoided. The spacer base body 41 has, for example, a glass fiber content of 35%. The glass fiber content in the spacer base body 41 simultaneously improves the strength and stability.

The first outer pane 3a and the second outer pane 3b protrude beyond the spacer 4, so that a peripheral edge area with an outer area 20 is formed. The outer area 20 is filled with a seal 1 1. This seal 1 1 is formed for example by an organic polysulfide. As a result, an optimal mechanical stabilization of the edge bond is achieved. At the same time, the interior is protected from the ingress of moisture and external influences from the outside.

For example, the first outer pane 3a and the second outer pane 3b are made of soda-lime glass having a thickness of 3 mm, while the center pane 2 is made of soda-lime glass having a thickness of 2 mm. The first outer pane 3a and the second Outer disk 3b have, for example dimensions of 1000 mm x 1200 mm, while the center disk 2 has dimensions of 980 mm x 1 180 mm.

FIG. 4 shows a schematic representation of the individual steps of a method according to the invention for producing an insulating glazing 100 according to the invention. FIG. 5 shows a flow chart of a possible embodiment of the method according to the invention:

S1: In a first step S1, a module 10 is formed. For this purpose, a middle plate 2 is inserted into a gap 7 of a holding profile 1 and four sections of the holding profile 1 are formed into a completely circumferential holding profile frame V, which framed the center plate 2.

S2: In a second step S2, a first outer pane 3a is connected to a first pane contact surface 4.1 of a spacer 4, wherein the spacer 4 is formed circumferentially to form a spacer frame 4 'in the edge region of the first outer pane 3a. The spacer frame 4 'frames an inner region 9 (shown in FIG. 4 as a dashed frame). The inner area 9 is the volume that is limited in width, length and height in the interior of the spacer frame. The spacer frame 4 'is offset inwardly in the edge region of the first outer pane 3a and forms an outer region 20 between the outer boundary of the spacer frame 4' and the edge of the first outer pane 3a. The connection of the first disk contact surface 4.1 of the spacer 4 with the first outer disk 3a is effected via an adhesive bond 5 by means of an adhesive which has been applied to the first disk contact surface 4.1 before the connection.

It is understood that the steps S1 and S2 can also be performed simultaneously or in reverse order.

S3: In a third step S3, the module 10, which comprises the middle plate 2 and the retaining profile frame V, in the inner region 9 of the spacer frame 4 'is arranged. Spacer frame 4 'and retaining profile frame V were matched so that the retaining profile frame V can be accurately positioned within the spacer frame 4'. In particular, the width bin of the holding profile 1 is equal to or slightly smaller than the width bA of the spacer 4. Die Middle disk 2 is arranged parallel and thus at a constant distance from the first outer disk 3a.

S4: In a fourth step S4, a second outer pane 3b is connected to a second pane contact surface 2.2. The connection takes place via an adhesive connection 5 by means of an adhesive 5 which has been applied to the second wheel contact surface 2.2. The module 10 is arranged in the inner region 9 of the spacer frame 4 'between the first outer pane 3a and the second outer pane 3b.

S5: In a fifth step S5, the disk assembly of the first outer disk 3a, the second outer disk 3b and the spacer frame 4 'is pressed together and thus permanently firmly connected.

It is understood that by arranging two or more modules 10 parallel to one another a quadruple glazing or multiple glazing can be produced. Alternatively, a module 10 may also have more than one middle plate 2, which are fixed in further intermediate spaces 7. The further gaps 7 can be formed, for example, by further retaining strips 6. Even so, a quadruple glazing or multiple glazing can be produced inexpensively.

FIG. 6 shows a detailed representation of a cross section through an alternative module 10 according to the invention, wherein a middle plate 2 is fixed in an alternative holding profile frame V. The holding profile 1 of the holding profile frame V has in this example a plurality of openings 12 and here, for example, two openings 12 per side, in which the holding profile base body 1 .1 is broken. The openings 12 form a continuous recess from the middle disc 2 side facing towards the middle disc 2 side facing away. The openings 12 facilitate, inter alia, the gas exchange during filling of the insulating glass with inert gas and the diffusion of moisture from the inner region 9 to the desiccant in the hollow chambers 42 of the spacer 4. The openings 12 are configured for example circular and have, for example, a diameter of 2 mm.

In the example shown, four spacer strips 8 are each arranged on the retaining profile 1, for example. The spacer strips 8 have a plurality of interruptions 14, for example via three interruptions 14 each having a length of 10 cm. The interruptions 14 of the spacer strips 8 allow in particular in combination with the openings 12 a particularly effective and targeted gas exchange between the first part inner area 9.1 and the second part inner area 9.2, both when filling with inert gas and during the subsequent use of the insulating glass 100 at the site. The openings 12 and the spacer strips 8 are arranged, for example, such that a gas exchange between the first part inner area 9.1 and the second part inner area 9.2 can take place. In other words, the openings 12 and spacer strips 8 form an open channel system through which a gas exchange can take place.

The combination of openings 12 and spacer strips 8 has a number of particular advantages: First, the escape of air or inert gas from the first part inner region 9.1 during assembly of the holding profile frame V together with the center plate 2 in the inner region 9 of the spacer frame 4 'is facilitated. Furthermore, the gas exchange during filling of the partial inner regions 9.1, 9.2 between the panes with inert gas is facilitated. Furthermore, the diffusion of moisture from the partial inner regions 9.1, 9.2 to the desiccant in the hollow chamber 42 of the spacer 4 is facilitated. Furthermore, pressure fluctuations between the two partial inner areas 9.1, 9.2 are more easily compensated. These are based on the fact that insulating glazings 100 in daily use subject to strong temperature fluctuations and temperature differences between the inside and outside. These are caused on the one hand by different temperatures in the interior and exterior of the insulating glazing and by heating by solar radiation and cooling by shading. If one of the panes is coated, for example, by an infrared-reflective coating that is transparent to visible light, the effect of asymmetric heating is enhanced. The temperature differences lead to temperature fluctuations in the gas-filled, sealed disk inner region 9 and thus to a different volume change of the gas in the partial inner regions 9.1, 9.2 between the disks. This can lead to an undesirable mechanical load on the center plate 2. Due to the system of openings 12 and interrupted spacer strips 8, a pressure equalization between the partial inner regions 9.1, 9.2 done and the mechanical load on the center plate 2 is reduced. This was unexpected and surprising to the skilled person. LIST OF REFERENCE NUMBERS

1 holding profile

1 .1 main body of the holding profile 1

r holding profile frame

2 center disc

3a, 3b outer pane

4 spacers

4.1 first disc contact surface

4.2 second disc contact surface

4.4 outer surface

4.5 Inner surface 4 'spacer frame

5 adhesive bond

6 retaining strip

7 gap

8 spacer bar

9 indoor area

9.1, 9.2 partial interior

10 module

1 1 seal

12 opening

15 interruption

20 outdoor area

41 spacer body

42 hollow chamber

43 insulation film

44 outer surface of the spacer 4

45 inner surface of the spacer 4

100 double glazing

b _A Width of the spacer 4

b _a Width of the spacer bar 8

b _H width of the holding profile 1

b _h Width of the retaining strip 6

h _A height of the spacer 4

ha Height of the spacer bar 8

h _H height of the holding profile 1

h _h height of the retaining strip 6 S1, S2, S3, S4, S5 process step

Claims

claims

1 . Insulating glazing (100), in particular triple insulating glazing, comprising:

at least one spacer (4) which is formed circumferentially to a spacer frame (4 ') and bounded by an inner region (9), wherein the spacer (4) consists of a first

Disc contact surface (4.1) and an oppositely disposed second disc contact surface (4.2), which are connected by an inner surface (4.5) and an outer surface (4.4) to at least one hollow chamber (42),

a first outer pane (3a) resting on the first pane contact surface (4.1) of the spacer frame (4 ') and a second outer pane (3b) resting on the second pane contact surface (4.2) of the

Spacer frame (4 ') is arranged,

at least one central disc (2) which is inserted into at least one intermediate space (7) of at least one retaining profile (1) and the retaining profile (1) is formed circumferentially to form a retaining profile frame (1 ') which frames the central disc (2),

wherein the central disc (2) with the holding profile frame (1 ') within the

Interior (9) of the spacer frame (4 ') and between the

Outer disks (3a, 3b) is arranged and the retaining profile (1) has at least one continuous opening (12) which connects the central disc (2) facing side of the holding profile (1) with the central disc (2) facing away from.

2. insulating glazing according to claim 1, wherein the holding profile (1) comprises a base body (1 .1) and preferably a rectangular base body (1 .1) or consists thereof, and on the middle disc (2) facing side of the base body (1. 1) two retaining strips (6) are arranged, which form the intermediate space (7).

3. insulating glazing according to claim 1, wherein the holding profile (1) comprises a base body (1 .1) and preferably a rectangular base body (1 .1) or consists thereof, and on the middle disc (2) side facing a groove in the base body (1 .1) is formed, which forms the intermediate space (7).

4. insulating glazing according to claim 2 or claim 3, wherein the base body (1 .1) on the middle disc (2) facing away from at least two spacer strips (8) and preferably four spacer strips (8).

5. insulating glazing according to one of claims 1 to 4, wherein the spacer strips (8) are interrupted and only partially along the base body (1 .1) of the holding profile (1) are arranged.

6. insulating glazing according to one of claims 1 to 5, wherein the retaining profile (1) has at least two continuous openings (12), and preferably at least one through-opening (12) on one side with respect to the

Intermediate space (7) and at least one further continuous opening (12) on the opposite side with respect to the intermediate space (7) is arranged.

7. insulating glazing according to one of claims 1 to 6, wherein the holding profile (1) comprises a plastic, preferably a plastic which is softer than the material of the spacer (4), contains or consists thereof, and particularly preferably polyethylene (PE), Polycarbonates (PC), polystyrene, polyesters, polyurethanes, polymethylmethacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylic ester-styrene-acrylonitrile (ASA), acrylonitrile-butadiene- Styrene - polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, polypropylene (PP), PBT / PC and / or copolymers or mixtures thereof, and in particular foamed.

8. insulating glazing according to one of claims 1 to 7, wherein the retaining profile (1) natural or synthetic rubber, preferably butadiene rubber (BR), styrene-butadiene rubber, acrylonitrile-butadiene rubber (NBR), butyl rubber (NR), Ethylene-propylene-diene rubber (EPDM), chloroprene rubber (CR) and / or polyisoprene rubber (IR) or a metal such as aluminum or

Stainless steel, contains or consists of.

9. insulating glazing according to one of claims 1 to 8, wherein the inner region (9) between the outer panes (3a, 3b) with a protective gas, preferably filled with a noble gas and more preferably with argon, krypton or mixtures thereof.

10. insulating glazing according to one of claims 1 to 9, wherein

an outer region (20) between an outer surface (44) of the spacer frame (4 ') and the outer edges of the outer discs (3a, 3b) circumferentially a seal (1 1), preferably of an organic polysulfide, contains and

the disk arrangement of the outer disks (3a, 3b) and the

Spacer frame (4 ') is hermetically sealed.

1 1. Insulating glazing according to claim 10, wherein the retaining profile frame (1 ') in such a way

is formed such that a gas exchange between a partial inner region (9.1) between the first outer pane (3a) and middle pane (2) and the

Partially inner region (9.2) between the central disc (2) and the second outer disc (3b) can take place.

12. A method for producing an insulating glazing (100) according to any one of claims 1 to 1 1, in particular for producing a triple insulating glazing, wherein at least

a) - at least one central disc (2) in at least one

Interspace (7) of at least one retaining profile (1) is used and the retaining profile (1) is formed circumferentially to a holding profile frame (1 '), which framed the central disc (2), and

a first outer pane (3a) having a first one

Disk contact surface (4.1) of a spacer (4) is connected, wherein the spacer (4) is formed circumferentially to a spacer frame (4 ') in the edge region of the first outer pane (3a) and an inner region (9) is framed,

b) the center disk (2) with the holding profile frame (1 ') in the inner region (9) of the spacer frame (4') is arranged,

c) a second outer pane (3b) is connected to a second pane contact surface (4.2) of the spacer (4) and

d) the disc assembly of the first outer disc (3a), the second outer disc (3b) and the spacer frame (4 ') is pressed together and firmly connected.

13. A method for producing an insulating glazing according to claim 12, wherein after the method step c) and before the method step d) the inner region (9) between the outer disks (3a, 3b) is filled with a protective gas, preferably with a noble gas and more preferably with argon, krypton or mixtures thereof.

14. A method for producing an insulating glazing according to claim 12 or

Claim 13, wherein after the disc assembly of the first

Outer pane (3a), the second outer pane (3b) and the

Spacer frame (4 ') is closed and pressed together, in the outer region (20) between the outer surface (44) of the spacer frame (4') and the outer edges of the outer discs (3a, 3b) circumferentially a seal (1 1) is filled.

15. Use of an insulating glazing produced according to one of claims 1 to 1 1 in construction and architecture in the interior and exterior.