DE202023103832U1 - Spacers for insulating glazing - Google Patents

Abstract

Spacer (1) for insulating glazing at least comprising a base body (5) at least comprising a first pane contact surface (7.1) and a second pane contact surface (7.2) opposite this which runs parallel to the first pane contact surface (7.1), a glazing interior surface (8) and an outer surface (9) which are connected to one another via the first pane contact surface (7.1) and the second pane contact surface (7.2), the glazing interior surface (8) and/or the outer surface (9) not running orthogonally to the pane contact surfaces (7.1, 7.2), at least in sections.

Description

The invention relates to a spacer for insulating glazing and an insulating glazing comprising such a spacer.

Insulating glazing has become an integral part of building construction, especially as environmental protection regulations become increasingly strict. These are made from at least two disks, which are connected to one another via at least one circumferential spacer. Depending on the embodiment, the space between the two panes, known as the glazing interior, is filled with air or gas, but in any case free of moisture. If the moisture content in the space between the glazing is too high, this will lead to condensation of water droplets in the space between the panes, especially when the outside temperature is cold, which must be avoided at all costs. To absorb the residual moisture remaining in the system after installation, hollow body spacers filled with a desiccant can be used, for example.

In addition to sealing the space between the panes against moisture, another crucial task of the spacer is the thermal decoupling of the building interior on one side of the insulating glazing and the environment on the opposite side of the insulating glazing. The thermal conductivity of the spacers has a non-negligible influence on the thermal properties of the pane. In one of the known embodiments, spacers consist of a light metal, usually aluminum. These are easy to process, but the insulating effect of the glazing in the edge area is significantly reduced due to the good thermal conductivity of the aluminum (also known as the cold edge effect).

In order to improve the thermal properties, so-called warm edge solutions for spacers are known. These spacers are made in particular of plastic and therefore have a significantly reduced thermal conductivity. Compared to spacers made of metal, plastic spacers lack sufficient gas tightness, which in turn can be achieved by insulating films applied to the outer surface of the spacers.

WO 2013/104507 A1 apparently a spacer with a polymeric hollow profile base body and an insulating film. The insulation film contains a polymeric film and at least two metallic or ceramic layers, which are arranged alternately with at least one polymeric layer.

Even with spacers made of thermoplastic materials, there is an effort to further optimize the thermal insulation and to look for ways to further reduce the thermal conductivity of the spacer.

The object of the present invention is to provide a spacer that has a lower thermal conductivity and an insulating glazing with this spacer.

The object of the present invention is achieved according to the invention by a spacer and insulating glazing with a spacer according to independent claims 1 and 8. Preferred embodiments of the invention emerge from the subclaims.

The spacer according to the invention for insulating glazing comprises at least one base body comprising two pane contact surfaces, a glazing interior surface and an outer surface. The two disk contact surfaces of the spacer are referred to as the first disk contact surface and the second disk contact surface. The first pane contact surface and the second pane contact surface represent the sides of the spacer on which the outer panes (first pane and second pane) of insulating glazing are installed when the spacer is installed. The first disk contact surface and the second disk contact surface lie opposite one another and run parallel to one another. The glazing interior surface and the outer surface are connected to one another via the first pane contact surface and the second pane contact surface, with the glazing interior surface and/or the outer surface not running orthogonally to the pane contact surfaces, at least in sections.

In the prior art, a common method for optimizing the thermal conductivity of a spacer is often the selection of materials with the lowest possible thermal conductivity. In the present case, the inventors are taking a different approach by changing the construction of the spacer in order to achieve a reduction in the thermal conductivity of the spacer without changing the material.

The spacer according to the invention has a glazing interior surface and/or an outer surface which, at least in sections, is not orthogonal to the pane contact surfaces. As a result, while the overall dimensions of the spacer remain the same, the length of the path that the heat has to travel from the first disk contact surface to the second disk contact surface through the spacer is increased. The dimensions of an insulating glazing comprising a spacer according to the invention remain the same, while the thermal conductivity of its edge connection can be reduced.

The glazing interior surface is defined as the surface of the spacer base body, which faces towards the interior of the glazing after the spacer has been installed in insulating glazing. The interior glazing surface lies between the first and second panes of the insulating glazing.

The outer surface of the spacer base body is the side opposite the glazing interior surface, which faces away from the interior of the insulating glazing in the direction of an external seal.

The first pane contact surface and the second pane contact surface represent the surfaces of the spacer, which are used to mount the panes of insulating glazing. The first disk contact surface and the second disk contact surface are parallel to one another.

In a preferred embodiment, the gradient of the glazing interior surface and/or the outer surface changes several times, preferably at least three times, particularly preferably at least four times, in its course between the first pane contact surface and the second pane contact surface. In this way, the path of heat through the spacer is further extended, which advantageously reduces the thermal conductivity of the spacer.

The outer surface and/or the glazing interior surface preferably run at least in sections in a wavy, zigzag and/or meandering shape, particularly preferably in a meandering shape. This allows the thermal conductivity of the spacer to be particularly reduced. Furthermore, the mechanical rigidity of the spacer in the longitudinal direction is improved, which is an important quality criterion in the production of insulating glazing. The resistance to mechanical loads in the cross-machine direction can also be improved

The base body of the spacer can be made from any materials known for this purpose, with the same choice of material reducing the thermal conductivity compared to a spacer according to the prior art. The base body can be designed, for example, as a metallic or polymeric base body. The preferred metals are aluminum and/or stainless steel. The base body is particularly preferably a polymeric base body. The polymeric base body preferably contains polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, 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, PBT/PC and/or copolymers or mixtures thereof. These materials achieve good results in terms of the mechanical stability and thermal conductivity of the base body. The thermal conductivity of the spacer according to the invention can thus be further optimized by choosing particularly suitable materials.

In a particularly preferred embodiment of the spacer, the base body comprises a thermoplastic polymer. The thermoplastic polymer of the base body can be, for example, polyethylene (PE), polystyrene, polyethylene terephthalate (PET), polypropylene (PP), styrene-acrylonitrile (SAN), polybutylene terephthalate (PBT), acrylonitrile-butadiene-styrene (ABS) or copolymers or mixtures thereof Ask. The use of styrene-based thermoplastic polymer as the base material has proven to be particularly advantageous with regard to the mechanical properties of the base body. A particularly suitable thermoplastic polymer is styrene-acrylonitrile (SAN). With regard to the mechanical properties of the base body, polybutylene terephthalate has also proven to be particularly advantageous.

Optionally, the polymeric base body can be designed as a foamed base body that has a pore structure with regular air-filled cavities.

In addition to the materials listed, the base body can include other components, such as reinforcing agents and color pigments.

A wide variety of fibrous, powdery or platelet-shaped reinforcing agents are known to those skilled in the art as reinforcing agents in polymeric base bodies. The powder and/or platelet-shaped reinforcing agents include, for example, mica and talc. Particularly preferred in terms of mechanical properties are reinforcing fibers, which include glass fibers, aramid fibers, carbon fibers, ceramic fibers or natural fibers. Alternatives include ground glass fibers or hollow glass spheres.

These hollow glass spheres have a diameter of 10 µm to 20 µm and improve the stability of the polymer hollow profile. Suitable hollow glass spheres are available under the name “3M™ Glass Bubbles” available for purchase. In a possible embodiment, the polymeric base body contains both glass fibers and hollow glass spheres. Adding hollow glass spheres leads to a further improvement in the thermal properties of the hollow profile.

Glass fibers are particularly preferably used as reinforcing agents, these being added in a proportion of 25% by weight to 40% by weight, in particular in a proportion of 30% by weight to 35% by weight. Within these areas, good mechanical stability and strength of the base body can be observed. Furthermore, a glass fiber content of 30% by weight to 35% by weight is well compatible with the multilayer barrier film made of alternating polymeric layers and metallic layers applied to the outer surface of the spacer in a preferred embodiment. By adjusting the thermal expansion coefficient of the polymer base body and the barrier film or coating, temperature-related tensions between the different materials and flaking of the barrier film or coating can be avoided.

The polymeric base body preferably comprises a gas-tight and vapor-tight barrier film, which serves to improve the gas-tightness of the base body. This is preferably applied at least on the outer surface of the polymeric base body, preferably on the outer surface and on part of the disk contact surfaces. The gas and vapor tight barrier improves the tightness of the spacer against gas loss and moisture penetration. The barrier is preferably applied to approximately half to two thirds of the pane contact surfaces, but can also be applied along larger areas or the entire height of the pane contact surfaces. A suitable barrier film is, for example, in WO 2013/104507 A1 disclosed.

In a preferred embodiment, the gas-tight and vapor-tight barrier is designed as a film on the outer surface of a polymeric spacer. This barrier film contains at least one polymer layer and a metallic layer or a ceramic layer. The thickness of the polymeric layer is between 5 µm and 80 µm, while metallic layers and/or ceramic layers with a thickness of 10 nm to 200 nm are used. Within the layer thicknesses mentioned, a particularly good seal of the barrier film is achieved. The barrier film can be applied to the polymeric base body, for example glued. Alternatively, the film can be co-extruded together with the base body.

The barrier film particularly preferably contains at least two metallic layers and/or ceramic layers, which are arranged alternately with at least one polymeric layer. The layer thicknesses of the individual layers are preferably as described in the previous paragraph. The outer layers are preferably formed by a metallic layer. The alternating layers of the barrier film can be connected or applied to one another using a variety of methods known in the art. Methods for depositing metallic or ceramic layers are well known to those skilled in the art. The use of a barrier film with an alternating layer sequence is particularly advantageous with regard to the tightness of the system. A defect in one of the layers does not lead to a loss of function of the barrier film. In comparison, with a single layer, even a small defect can lead to complete failure. Furthermore, applying several thin layers is advantageous compared to one thick layer, as the risk of internal adhesion problems increases with increasing layer thickness. Furthermore, thicker layers have a higher conductivity, so that such a film is thermodynamically less suitable.

The polymeric layer of the film preferably comprises polyethylene terephthalate, ethylene vinyl alcohol, polyvinylidene chloride, polyamides, polyethylene, polypropylene, silicones, acrylonitriles, polyacrylates, polymethyl acrylates and / or copolymers or mixtures thereof. The metallic layer preferably contains iron, aluminum, silver, copper, gold, chromium and/or alloys or oxides thereof. The ceramic layer of the film preferably contains silicon oxides and/or silicon nitrides.

In an alternative preferred embodiment, the gas-tight and vapor-tight barrier is preferably designed as a coating. The coating contains aluminum, aluminum oxides and/or silicon oxides and is preferably applied using a PVD process (physical vapor deposition). The coating with the materials mentioned delivers particularly good results in terms of tightness and also shows excellent adhesion properties to the external sealing materials used in insulating glazing.

In a particularly preferred embodiment, the gas-tight and vapor-tight barrier has at least one metallic layer or ceramic layer, which is designed as a coating and contains aluminum, aluminum oxides and / or silicon oxides and preferably via a PVD process ren (physical vapor deposition) is applied.

The base body of the spacer preferably has a hollow chamber which extends along the base body and is therefore designed as a hollow profile spacer. The hollow chamber of the base body borders the glazing interior surface, the glazing interior surface being located above the hollow chamber and the outer surface of the spacer being below the hollow chamber. In this context, above is defined as facing the inner space between the panes of the insulating glazing in the installed state of the spacer in an insulating glazing and below as facing away from the interior of the pane. The hollow chamber of the spacer leads to a weight reduction compared to a solidly formed spacer and is available to accommodate additional components, such as a desiccant.

In one possible embodiment, the outer surface of the spacer is angled adjacent to the disk contact surfaces, thereby achieving increased stability of the base body. The outer surface has a first angled section adjacent to the first disk contact surface and a second angled section adjacent to the second disk contact surface. In a preferred embodiment of the invention, the first angled section and the second angled section each have an angle α of 130° to 140° to the respective adjacent pane contact surface. This is advantageous for further improving the mechanical stability of the spacer. The angle α between the first angled section and the disk contact surface preferably assumes the same value as the angle α between the second angled section and the disk contact surface. Such a symmetrical design leads to further stability advantages.

The height of the spacer is determined as the maximum height of the spacer between the interior surface of the glazing and the exterior surface. The height of the spacer is preferably 5.0 mm to 10.0 mm, particularly preferably 6.0 mm to 8.0 mm, in particular 6.5 mm to 7.0 mm. Within these areas, good stability of the spacer and secure bonding of the panes to the pane contact surfaces are achieved.

The width of the spacer is defined as the maximum extent of the spacer between the opposing disk contact surfaces. The width of the spacer depends largely on the desired gaps between the panes of the insulating glazing to be produced. The width of the spacer is typically 4 mm to 30 mm, preferably 8 mm to 16 mm.

The wall thickness of the base body is preferably between 0.5 mm and 1.5 mm, particularly preferably between 0.8 mm and 1.2 mm. Good stability is achieved in these areas. At the same time, material consumption is kept as low as possible.

Preferably, several openings are made in the glazing interior surface, with a direct passage between the hollow chamber and the area above the glazing interior surface in the area of the openings. When the spacer is installed in insulating glazing, the openings connect the interior of the hollow chamber with the interior of the glazing, making gas exchange possible between them. This allows air moisture to be absorbed by a desiccant located in the hollow chamber and thus prevents the windows from fogging up. The openings are preferably designed as slots, particularly preferably as slots with a width of 0.1 mm to 0.3 mm, for example 0.2 mm, and a length of 1.5 mm to 3.5 mm, for example 2 mm. The slots ensure optimal air exchange without desiccant penetrating from the hollow chamber into the inner space between the panes. The total number of openings depends on the size of the insulating glazing.

Particularly preferably, a perforation groove is introduced into the glazing interior surface, which runs essentially parallel to the pane contact surfaces and within which the openings are introduced into the glazing interior surface. The perforation groove represents a recess in the glazing interior surface, that is, the perforation groove is offset from the glazing interior surface in the direction of the hollow chamber by the depth of the perforation groove. The perforation groove preferably has a depth of 0.05 mm to 0.5 mm, particularly preferably 0.07 mm to 0.25 mm, for example 0.10 mm

The spacer described, comprising a first pane contact surface and a second pane contact surface, is suitable for both double and triple and multiple glazing. In this case, additional spacers can be used to accommodate several panes, as well as a spacer base body whose shape is suitable for accommodating multiple panes. In the former case, a first and a second disk are first attached to the disk contact surfaces of the spacer and then further spacers are attached to one of the surfaces of the disks facing away from the spacer attached, whose exposed disk contact surfaces accommodate additional disks. In the alternative embodiment, triple or multiple insulating glazing can also be designed with a spacer in the form of a double spacer. Such a double spacer can accommodate at least one additional disk in a groove. A spacer for triple glazing has a groove in the glazing interior surface between the first pane contact surface and the second pane contact surface, in which a third pane is inserted between the first pane and the second pane. The first and second disks are attached to the first and second disk contact surfaces of the spacer. Since the groove runs between the first glazing interior surface and the second glazing interior surface, it delimits them laterally and separates a first hollow chamber and a second hollow chamber from one another. The side flanks of the groove are formed by the walls of the first hollow chamber and the second hollow chamber. Such basic spacer shapes are, among other things WO 2014/198431 A1 known.

The invention further includes insulating glazing with a spacer according to the invention. The insulating glazing contains at least a first pane, a second pane and a circumferential spacer according to the invention encompassing the panes.

The glazing interior of the insulating glazing is located adjacent to the glazing interior surface of the spacer. The outer surface of the spacer, however, borders on the outer space between the panes. The first disk is attached to the first disk contact surface of the spacer and the second disk is attached to the second disk contact surface of the spacer.

The first and second disks are attached to the disk contact surfaces, preferably via a sealant that is mounted between the first disk contact surface and the first disk and/or the second disk contact surface and the second disk.

The sealant preferably contains butyl rubber, polyisobutylene, polyethylene vinyl alcohol, ethylene vinyl acetate, polyolefin rubber, polypropylene, polyethylene, copolymers and/or mixtures thereof.

The sealant is preferably introduced into the gap between the spacer and the disks with a thickness of 0.1 mm to 0.8 mm, particularly preferably 0.2 mm to 0.4 mm.

The outer space between the panes of the insulating glazing is preferably filled with an external seal. This external seal is primarily used to bond the two panes and thus ensure the mechanical stability of the insulating glazing.

The outer seal preferably contains polysulfides, silicones, silicone rubber, polyurethanes, polyacrylates, copolymers and/or mixtures thereof. Such materials have very good adhesion to glass, so that the external seal ensures that the panes are securely bonded. The thickness of the outer seal is preferably 2 mm to 30 mm, particularly preferably 5 mm to 10 mm.

In a particularly preferred embodiment of the invention, the insulating glazing comprises at least three panes, with a further spacer frame being attached to the first pane and/or the second pane, to which the at least third pane is attached. In an alternative embodiment, the insulating glazing comprises a double spacer with a groove, in the groove of which the third pane is inserted. The first and second disks rest on the disk contact surfaces.

The first pane, the second pane and/or the third pane of the insulating glazing preferably contain glass, particularly preferably quartz glass, borosilicate glass, soda-lime glass and/or mixtures thereof. The first and/or second pane of the insulating glazing can also comprise thermoplastic polymeric panes. Thermoplastic polymeric disks preferably include polycarbonate, polymethyl methacrylate and/or copolymers and/or mixtures thereof. Panes of insulating glazing beyond this can have the same composition as mentioned for the first, second and third panes.

The first disk and the second disk have a thickness of 2 mm to 50 mm, preferably 2 mm to 10 mm, particularly preferably 4 mm to 6 mm, although both disks can also have different thicknesses.

The first pane, the second pane and further panes can be made of single-pane safety glass, of thermally or chemically toughened glass, of float glass, of extra-clear low-iron float glass, colored glass, or of laminated safety glass containing one or more of these components. The panes can have any other components or coatings, for example low-E layers or other sun protection coatings.

The outer space between the panes, delimited by the first pane, second pane and outer surface of the spacer, is at least partially, preferably completely, filled with an external seal. This achieves very good mechanical stabilization of the edge seal. Furthermore, the seal surrounds the pressure compensation body and in this way protects it against mechanical influences from outside.

The outer seal preferably contains polymers or silane-modified polymers, particularly preferably organic polysulfides, silicones, room temperature-crosslinking (RTV) silicone rubber, peroxide-crosslinked silicone rubber and/or addition-crosslinked silicone rubber, polyurethanes and/or butyl rubber.

The sealant between the first disk contact surface and the first disk, or between the second disk contact surface and the second disk, preferably contains a polyisobutylene. The polyisobutylene can be a crosslinking or non-crosslinking polyisobutylene.

The insulating glazing is optionally filled with a protective gas, preferably with a noble gas, preferably argon or krypton, which reduces the heat transfer value in the space between the insulating glazing.

In principle, a wide variety of insulating glazing geometries are possible, for example rectangular, trapezoidal and rounded shapes. To produce round geometries, the spacer can be bent, for example, in the heated state.

At the corners of the insulating glazing, the spacers are linked to one another via corner connectors, for example. Such corner connectors can, for example, be designed as a plastic molded part with a seal in which two spacers collide.

Alternatively, the spacers at the corners can also be connected directly to one another, for example by welding the spacers adjacent to one another in the corner area. For example, the spacers are cut to 45° fermentation and connected to each other using ultrasonic welding.

In a further preferred embodiment, the spacer is not separated at the corners of the glazing and connected at the required angle via corner connectors, but is bent into the corresponding corner geometry while heating.

1. a) Bereitstellung erfindungsgemäßer Abstandhalter,
2. b) Zusammenfügen eines Abstandhalterrahmens aus erfindungsgemäßen Abstandhaltern,
3. c) Anbringen einer ersten Scheibe an der ersten Scheibenkontaktfläche des Abstandhalterrahmens über ein Dichtmittel, Anbringen einer zweiten Scheibe an der zweiten Scheibenkontaktfläche des Abstandhalterrahmens über ein Dichtmittel,
4. d) optional: Anbringen mindestens eines weiteren Abstandhalterrahmens an der ersten Scheibe und/oder der zweiten Scheibe und Anbringen einer dritten und gegebenenfalls weiterer Scheiben an den weiteren Abstandhalterrahmen,
5. e) Verpressen der Scheibenanordnung,
6. f) Einbringen einer äußeren Abdichtung in den äußeren Scheibenzwischenraum.

A preferred method for producing insulating glazing according to the invention comprises at least the steps:

1. a) provision of spacers according to the invention,
2. b) assembling a spacer frame made of spacers according to the invention,
3. c) attaching a first disc to the first disc contact surface of the spacer frame via a sealant, attaching a second disc to the second disc contact surface of the spacer frame via a sealant,
4. d) optional: attaching at least one further spacer frame to the first pane and/or the second pane and attaching a third and optionally further panes to the further spacer frame,
5. e) pressing the disk arrangement,
6. f) Introducing an external seal into the outer space between the panes.

The gluing of the panes to the pane contact surfaces according to step c) can be carried out in any order. Optionally, both panes can be glued to the pane contact surfaces at the same time.

In step f), the outer space between the panes is at least partially, preferably completely, filled with an external seal. The outer seal is preferably extruded directly into the outer space between the panes, for example in the form of a plastic sealing compound.

The glazing interior between the panes is preferably filled with a protective gas before the arrangement is pressed (step e)).

• 1 eine schematische Darstellung des erfindungsgemäßen Abstandhalters im Querschnitt,
• 2a eine schematische Darstellung einer Isolierverglasung mit erfindungsgemäßem Abstandhalter im Querschnitt,
• 2b die Isolierverglasung gemäß 2a in Draufsicht.

The invention is explained in more detail below with reference to drawings. The drawings are purely schematic representations and not to scale. They do not restrict the invention in any way. Show it:

• 1 a schematic representation of the spacer according to the invention in cross section,
• 2a a schematic representation of an insulating glazing with a spacer according to the invention in cross section,
• 2 B the insulating glazing according to 2a in top view.

1 shows a schematic representation of the spacer 1 according to the invention comprising a polymeric base body 5 with two pane contact surfaces 7.1 and 7.2, a glazing interior surface 8, an outer surface 9 and a hollow chamber 10. The outer surface 9 has an angled shape, with the angled sections adjacent to the pane contact surfaces 7.1 and 7.2 9a, 9b of the outer surface are inclined at an angle of α = 135 ° to the disk contact surfaces 7.1 and 7.2. The section of the outer surface 9 located between the angled sections 9a, 9b extends in a meandering shape between them. The glazing interior surface 8 extends in a meandering shape between the first pane contact surface 7.1 and the second pane contact surface 7.2. On the outer surface 9, the angled sections of the outer surface 9a, 9b and partial areas of the pane contact surfaces 7.1, 7.2 of the spacer 1, a water- and vapor-tight barrier film (not shown) is optionally applied, which prevents heat transfer through the polymeric base body 5 into the glazing interior of insulating glazing reduced. The hollow chamber 10 is suitable for being filled with a desiccant. The glazing interior surface 8 of the spacer 1 has openings 12 which are arranged at regular intervals along the glazing interior surface 8 in order to enable gas exchange between the interior of the insulating glazing and the hollow chamber 10. Any air humidity that may be present in the interior is thus absorbed by the desiccant 11. The openings 12 are preferably designed as slots with a width of 0.2 mm and a length of 2 mm. The material thickness (thickness) of the walls of the base body 5 is approximately the same all around and is, for example, 1 mm.

The inventors have calculated the thermal conductivity of a spacer according to the invention as in 1 shown employed. The spacer according to the invention was compared to an identical spacer with a glazing interior surface that runs orthogonally to the pane contact surfaces and an outer surface that runs parallel to the glazing interior surface between the angled sections of the outer surface. The spacer according to the invention showed a thermal conductivity reduced by 18%. Both spacers were viewed without barrier film.

2a and 2 B show an insulating glazing 2 with the spacer 1 according to the invention 1 . Optionally, the spacer 1 includes a gas-tight and vapor-tight barrier film, which is not shown in detail. In 2a a cross section of the insulating glazing 2 is shown, while 2 B represents a top view. 2 B shows an overall view of the insulating glazing 2 according to 2a . The spacers 1 are connected to one another at the corners of the insulating glazing 2 via corner connectors 17. The spacer 1 according to the invention is attached all around between a first disk 15 and a second disk 16 via a sealant 4. The sealant 4 connects the disk contact surfaces 7.1 and 7.2 of the spacer 1 with the disks 15 and 16. The hollow chamber 10 is filled with a desiccant 11. Molecular sieve is used as desiccant 11. The glazing interior 3 adjacent to the glazing interior surface 8 of the spacer 1 is defined as the space delimited by the panes 15, 16 and the spacer 1. The outer pane space 13 adjacent to the outer surface 9 of the spacer 1 is a strip-shaped circumferential section of the glazing, which is delimited on one side by the two panes 15, 16 and on another side by the spacer 1 and whose fourth edge is open. The glazing interior 3 is filled with argon. A sealant 4 is introduced between a disk contact surface 7.1 or 7.2 and the adjacent disk 15 or 16, which seals the gap between disk 15, 16 and spacer 1. The sealant 4 is polyisobutylene. On the outer surface 9, an external seal 6 is attached in the outer space between the panes 13, which serves to bond the first pane 19 and the second pane 20. The outer seal 6 consists of polysulfide. The outer seal 6 is flush with the edges of the first pane 15 and the second pane 16.

Reference symbol list

1

Spacer

2

Insulating glazing

3

Glazing interior

4

sealant

5

Basic body

6

external sealing

7

Disc contact surfaces

7.1

first disk contact surface

7.2

second disk contact surface

8th

Glazing interior surface

9

external surface

10

hollow chamber

11

desiccant

12

openings

13

outer space between the panes

15

first slice

16

second disc

17

Corner connector

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2013104507 A1 [0005, 0024]
• WO 2014198431 A1 [0037]

Claims (8)

Spacer (1) for insulating glazing at least comprising a base body (5) at least comprising a first pane contact surface (7.1) and a second pane contact surface (7.2) opposite this which runs parallel to the first pane contact surface (7.1), a glazing interior surface (8) and an outer surface (9) which are connected to one another via the first pane contact surface (7.1) and the second pane contact surface (7.2), the glazing interior surface (8) and/or the outer surface (9) not running orthogonally to the pane contact surfaces (7.1, 7.2), at least in sections. spacer (1). Claim 1 , wherein the slope of the glazing interior surface (8) and / or the outer surface (9) changes several times, preferably at least three times, particularly preferably at least four times, in its course between the first pane contact surface (7.1) and the second pane contact surface (7.2). Spacer after Claim 1 or 2 , wherein the outer surface (9) and / or the glazing interior surface (8) run at least in sections in a wavy, zigzag and / or meandering shape. Spacer (1) according to one of the Claims 1 until 3 , wherein the base body (5) is a thermoplastic polymer, preferably polyethylene (PE), polystyrene (PS), polyethylene terephthalate (PET), polypropylene (PP), styrene-acrylonitrile (SAN), acrylonitrile-butadiene-styrene (ABS), polybutylene terephthalate ( PBT) or copolymers or mixtures thereof. Spacer (1) according to one of the Claims 1 until 4 , wherein a gas and vapor-tight barrier film is applied at least to the outer surface (9) of the base body (5). Spacer (1) according to one of the Claims 1 until 5 , wherein the base body (5) has a hollow chamber (10) which is enclosed by the glazing interior surface (8), the outer surface (9), the first pane contact surface (7.1) and the second pane contact surface (7.2). Spacer (1) according to one of the Claims 1 until 6 , with several openings (12) being made in the glazing interior surface (8). Insulating glazing (2) comprising at least one spacer (1) according to one of Claims 1 until 7 , a first disc (15) and a second disc (16), the first disc (15) being attached to the first disc contact surface (7.1) of the spacer (1) via a sealant (4) and the second disc (16) being attached a sealant (4) is attached to the second disk contact surface (7.2) of the spacer (1).

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