WO2021028092A1

WO2021028092A1 - Spacer for insulated glass units

Info

Publication number: WO2021028092A1
Application number: PCT/EP2020/065693
Authority: WO
Inventors: Michael Möller; Klaus Esser; Reimar OLDEROG; Heinz RAUNEST; Bernhard KÖNIGSBERGER; Peter Runze; Marc REHLING; Christian HELFERT; Stefan Dierneder; Leopold Mader
Original assignee: Ensinger Gmbh
Priority date: 2019-08-12
Filing date: 2020-06-05
Publication date: 2021-02-18
Also published as: EP4013936A1; DE102019121691A1

Abstract

The invention relates to a spacer for insulated glass units, which can be easily transported, easily shaped to form a spacer frame, and easily but nevertheless precisely integrated into the glass units during production of the insulated glass unit. The spacer has a profile body running in a longitudinal direction, said profile body comprising a main body produced from a first plastics material and a separate desiccant body based on a second plastics material. The main body comprises two interspaced side faces, against which two parallel glass units lie when the insulated glass unit is assembled, the main body having an outer and an inner surface running between the side faces. The main body can be rolled up about an axis running perpendicularly to the side faces and is flexurally rigid on a plane running perpendicularly to the side faces. The desiccant body comprises a particulate desiccant which is embedded in the second plastics material.

Description

Spacer for insulating glass panes

The invention relates to a spacer for insulating glass panes and insulating glass panes with two or more glass panes, which are held by a frame formed from the spacer at a predetermined distance.

The spacer has a profile body extending in a longitudinal direction with a base body made of a first plastic material, the base body comprising two spaced apart side surfaces on which, when installed in an insulating glass pane, two glass panes aligned parallel to one another rest, the base body has an outer and an inner surface which ten surfaces extend between the Be.

Conventional spacers are usually equipped with one or more receiving chambers for a desiccant, which is used to keep the interior of the pane dry in the insulating glass panes and thus to avoid condensation in the pane interior.

An example of this is known from DE 198 07 454 A1. Holders in these spacers is a cavity forming the receiving chamber in the formation of the spacer frame with a predetermined amount of desiccant be falls.

Alternatively, spacers with desiccant particles integrated into the spacer profile body or its binder matrix are known, for example from WO 2004/081331 A1. The spacers are either cut to size and assembled into a frame using connecting elements or bent from a single piece to form a frame. The binder matrix is formed from a plastic material that is permeable to water vapor.

Roll-up spacers are known from EP 0 261 923 A2, in which a spacer is formed from a foamed elastomer material which contains a desiccant. Rollable spacers are referred to below as windable or coilable.

Furthermore, spacers are known which are suitable for the production of triple insulating glass panes, which still have a rich recording area for a third, middle pane of glass in the middle area between side surfaces on which outer glass panes come to rest. An example of this is known from WO 2014/198431 A1.

In the case of the spacers sold as bar goods, there is the problem of handling and the comparatively short length of the bars, which is typically limited to about 5 to 6 m. The further use of remaining lengths leads to greater effort in the manufacture of the insulating glass panes. In addition, the transport of the spacers, which are typically packaged in so-called runs, is more complex and costly due to the dimensions of the stanchions, which exceed the typical dimensions of pallets.

Easier to handle, particularly during transport, for example, are in any roll-up spacers of an elastomeric material, commercially available from Edgetech Europe GmbH under brand SuperSpacer ^® that can be provided in size reindeer lengths. However, these spacers not only have a lower flexural rigidity, but also a lower Shore hardness or a lower flexural rigidity when forces act perpendicular to the side surfaces. This leads to the fact that the rigid (hollow pro- fil-) spacers, the usual installation via a lateral butyl sealant application and the pressing of this butyl mass to a layer thickness of approx. 0.2 to approx. 0.5 mm without deforming the spacer is not possible or only possible under difficult conditions.

In order to be able to handle the insulating glass panes before a secondary sealant, which is typically applied to the edge of the pane, has cured, additional assembly aids, e.g. in the form of acrylic adhesives applied to the side, must be used to prevent the spacers from slipping against the glass panes how to prevent the glass panes from slipping against one another during the assembly of the insulating glass panes. A butyl primary seal is used for these spacers in order to comply with the maximum permissible moisture absorption as well as the gas loss rate required by DIN EN 1279 Part 2 and 3 (2018). Because of the lower bending stiffness perpendicular to the side surfaces and the lower Shore hardness D the butyl cannot be pressed between the spacer and glass panes with the usual forces, "softer" butyl materials are usually used to ensure that all cavities and porosities (eg the glass surface) are filled.

In the case of spacers with receiving chambers for a desiccant, the introduction of the desiccant in the form of granules is an additional expense when processing the spacer into a spacer frame. This is usually done in a separate operation on what is known as a drying agent filling machine.

In view of the aspects mentioned above, the present invention is based on the object of providing a spacer that can be transported with little effort, that can be easily formed into a spacer frame and that is easy and precise with the production of the insulating glass pane Glass panes can be installed. This object is achieved by a spacer for insulating glass panes as defined in claim 1.

In the context of the present invention, a rollable base body is understood to mean base bodies which can be rolled up onto a core or mandrel with a diameter of approx. 200 mm to approx. 1,000 mm, in particular from approx. 300 mm to approx. 500 mm, without substantial permanent deformation . This means that after unrolling, the base body of the spacer essentially assumes its original geometry again and is easy to handle in this form.

Because the base body according to the invention can be rolled up, it can be provided and trans ported in great lengths with a minimal volume.

Finally, in the case of the spacers according to the invention, the formation of the corner regions of the spacer frame is simplified due to the given limited bending stiffness given a force application perpendicular to the outer surface of the base body. In particular, a drying agent exit, tearing and widening are avoided, and the seal succeeds better in the corner areas of the spacer frame than in the prior art. In addition, the base bodies of the spacers according to the invention can be machined to form the corners, e.g. by punching or milling out, in a more shapely and acute-angled manner.

The flexural rigidity of the base body of the spacers according to the invention in a plane perpendicular to the side surfaces (increased transverse rigidity) not only enables easy handling of the spacers according to the invention, but also the use of conventional primary butyl sealants and their compression in the manufacture of the insulating glass panes.

Due to the significantly stronger material of the base body compared to conventional flexible spacers, fixtures can be attached to the The space between the panes can be done in the conventional way by screwing or shooting with (staples).

Typically, the first plastic material, and thus the base body, is essentially free of drying agents.

The base body preferably has a deflection of approx. 0.8 mm or more compared to an unloaded state, more preferably approx. 1 mm or more, in particular approx. 1.2 mm or more, measured on the outer surface of the base body if its outer surface on two support bodies with a support width of 100 mm, measured in the longitudinal direction of the base body, and with a force of a test stamp acting in the middle of the support width of 50 N, this force being perpendicular to a support plane defined by the support body in the base body by means of a part-cylindrical punch with a flat contour is initiated. The value determined in this way essentially also corresponds to the travel of the test stamp. Typically, the upper limit of the deflection is approx. 25 mm, preferably 10 mm, more preferably 5 mm.

If the base body of a spacer according to the invention rests on two support bodies with one side surface, it has, due to its flexural rigidity in a plane perpendicular to the side surfaces (transverse rigidity), under the action of a force of a test stamp, a significantly lower deflection than when it is supported on the outer surface and one Applying the same force perpendicular to the outer surface. For the sake of ease of use, the base bodies of the spacers according to the invention preferably show a deflection of approx. 10 mm or less, more preferably approx. 5 mm or less, when the force of 100 N acts perpendicular to a side surface in the middle of a support width most preferably about 3 mm or less, compared to an unloaded state. The deflection is measured on a side surface of the base body when it rests on two support bodies with a support width of 100 mm, measured in the longitudinal direction of the base body. The value determined is essentially the same also the travel of the test stamp. Spacers with such Grundkör pern are sufficiently stable in the transverse direction and are particularly easy to handle when producing the insulating glass panes. Above all, the primary butyl sealant can be pressed evenly and thus a uniform and reliable sealing of the space between the insulating glass pane can be achieved.

When measuring the deflection when the base body rests with one side surface on the support bodies, a partially cylindrical punch with a planar contour is also used, with the force being applied to the Seitenflä surface that is opposite the side surface resting on the support bodies.

The measurements of the deflection (known as the 3-point bending test) are essentially carried out analogously to the measurement of a bending stiffness according to DIN EN ISO 178 (2013-09), as will be explained in more detail in the context of the detailed description.

The profile bodies of the spacers according to the invention contain, at least in part of their volume, i.e. the desiccant body, a portion of a particulate desiccant, so that the introduction of particulate desiccant into the spacer when producing the spacer frame and its installation to form insulating glass panes is generally not necessary.

In addition, the spacer according to the invention and its parts can be produced without a closed receiving chamber for the desiccant, so that the production of the spacer or its base body and desiccant body, which takes place in particular by means of an extrusion process, is simplified.

The particulate desiccant is preferably extruded into the second plastic material of the desiccant body. An introduction of desiccant in the spacer when making the spacer frame and their installation to form insulating glass panes can usually be omitted. In this way it can be avoided in particular that desiccant grains or dust can get into the space between the panes, as can be the case when filling with a loose bed of desiccant granulate.

The desiccant body can also be designed so that it can be rolled up, but can also be provided in the form of bar goods. Since the drying agent body does not necessarily have to extend over the entire length of the base body of the spacer in a spacer frame, there are no noteworthy disadvantages associated with the provision in the form of bar goods. On the other hand, equipping the spacer with the necessary amount of desiccant is still greatly simplified.

Furthermore, by separating the main body and drying agent, it is possible to adjust the amount of drying agent exactly to the amount required for the insulating glass pane. With conventional hollow profile spacers, it is only possible to determine how many sides of a spacer frame are filled with desiccant. With the flexible spacers, the amount of desiccant is fixed because it is embedded in the material.

When using rollable desiccant bodies, it can be provided that they are rolled up, stored and dispatched together with the base body as a composite. The rollability given according to the invention, as defined above for the base body as such, then preferably also applies to the composite of base body and drying agent body.

Spacers according to the invention preferably have a drying agent body with an inner and an outer surface, wherein the drying agent body is arranged in the profile body facing with its outer surface facing the inner surface of the base body. The inner surface of the desiccant body can then form the inner surface of the spacer that - there facing the space between the panes - remains visible in an insulating glass pane even when installed.

In further preferred spacers according to the invention, reinforcing elements are embedded in the first plastic material of the base body, the reinforcing elements preferably comprising particulate materials, fiber materials, flat materials and / or wire-shaped materials.

A corresponding selection of the reinforcement elements and their placement in the base body of the spacer can optimize both the effect of resetting the base body of the spacer into an essentially linear starting position and its flexural rigidity and transverse rigidity.

The reinforcement elements can also be used to limit the coefficient of thermal expansion a of the base body, preferably to about 5-10 ⁵ K ¹ or less, more preferably to about 3.5 · 10 ⁵ K ¹ . Ideally, one should approach the coefficient of thermal expansion of the glass pane.

In a preferred embodiment of the spacer according to the invention, the base body, seen in cross section perpendicular to the longitudinal direction, has side walls on both sides, which extend from the base body beyond its inner surface by approx. 2 mm or more, preferably approx. 3 mm or more, more preferably approx. 4 mm or more. In such embodiments, the side surfaces of the base body are formed by the side walls. The side walls are preferably aligned essentially parallel to one another.

The side surfaces of the spacer according to the invention are formed by the side surfaces of the base body if the spacer is designed without a barrier layer or, if a barrier layer is present, this does not extend over the side surfaces of the base body. In those cases in which the base body is equipped with a barrier layer, which also extends to the side surfaces of the base body, the Be tenoberflächen of the spacer layer from the outer surface of the barrier and optionally partially formed by the side surfaces of the base body.

Typically, the spacers according to the invention have a Profilkör by at which a height H, seen in cross section perpendicular to the longitudinal direction, of about 7 mm or less, preferably about 6 mm or less, is given.

When determining the height H and the width B of a spacer profile according to the invention, the corresponding values of a rectangle comprising the cross section of the spacer are used as a basis.

With regard to their cross-sectional geometry, spacers according to the present invention are particularly preferred in which the profile body has an aspect ratio A in cross section perpendicular to the longitudinal direction, which is defined as the quotient of the width B of the profile body and the height H of the profile body (A = W / H) , the aspect ratio A having a value of approx. 5 or more, preferably a value of approx. 6 or more, particularly preferably a value of approx. 7 or more. These values apply in particular to spacers which are intended for triple glazing and which have a width of approx. 30 mm or more.

In preferred spacers according to the present invention, the first plastic material comprises a polymer which is selected from polyolefins, polyketones, polyesters, vinyl polymers, polyamides or blends of two or more of these polymers, the polymer or polymers preferably consisting of polypropylene, polyethylene, styrene Acrylonitrile copolymer (SAN), acrylic butadiene styrene copolymer (ABS), acrylic ester styrene acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6), polyamide 66 (PA66), polyethylene rephthalate (PET) is / are selected. In further preferred spacers according to the invention, the second plastic material comprises a thermoplastic polymer and / or an elastomer and / or a thermoplastic elastomer. The thermoplastic polymer is selected in particular from polyolefins, polyketones, polyesters, vinyl polymers, polyamides, polyurethanes or blends of two or more of these polymers. Polypropylene, polyethylene, styrene-acrylonitrile copolymer (SAN), acrylic-butadiene-styrene copolymer (ABS), acrylic ester-styrene-acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6) are particularly preferred ), Polyamide 66 (PA66), polyethylene terephthalate (PET) and their blends. The elastomer and its blends include in particular silicone polymers, styrene copolymers and / or ethylene-propylene-diene rubber (EPDM). The thermoplastic elastomer (TPE) and its blends are preferably based on polyurethane, polyamide, polystyrene, copolyester and polyolefin. The selection of the second plastic material takes place in particular taking into account its water vapor permeability.

In further preferred embodiments of the present invention, the first and / or the second plastic material is foamed at least in partial areas of the base body or the desiccant body.

The particulate desiccant, which is embedded in the second plastic material of the desiccant body, is preferably selected from silicas, sulfates, oxides, in particular in the form of zeolite, calcium sulfate, silica gel, sheet silicate, tectosilicate, phosphorus oxide, aluminum oxide, alkali oxide and / or alkaline earth oxide or mixtures thereof, the desiccant particularly preferably comprising a zeolite 3A with an average pore size of about 3 angstroms.

The particulate desiccant with a proportion of approx.

10% by weight or more, more preferably about 25% by weight to about 65% by weight, most preferably about 40% by weight to about 65% by weight, embedded in the second plastic material , each based on the total weight of the desiccant body. In particular, the particulate desiccant can be embedded in the second plastic material in the form of granules and / or powder, the granules preferably having an average particle size D50 of about 2 mm or less, more preferably about 1 mm or less, and the powder being preferred has a middle particle size D50 of about 0.1 mm or less.

The mean particle size D50 can, for example, be determined optically using sectional or micrographs or using the residue on ignition.

Spacers according to the invention are preferred which comprise a proportion of desiccant which ensures a moisture absorption capacity of approx. 2 g water per 100 g spacer or more, more preferably from approx. 4 g to approx. 30 g per 100 g spacer. This capacity is sufficient in a large number of cases to ensure that the insulating glass panes are fog-free during their normal period of use.

In the case of the spacers according to the invention, the second plastic material is preferably selected in such a way that the moisture absorption capacity of the spacer when stored in a standard climate (50% ± 10% relative humidity at a temperature of 23 ° C ± 2 ° C) in a storage period of 48 hours by about 50% or less, preferably about 30% or less, more preferably about 20% or less. This means that the desiccant bodies can be stored and transported with reasonable effort, without having to accept an excessive decrease in the moisture absorption capacity.

This ensures that there is no excessive pre-loading of the spacer or desiccant with moisture when assembling the insulating glass pane, even if the spacer or desiccant body according to the invention is exposed to the ambient air for a while. In particular, flexible spacers made of silicone foam known from the prior art have a very rapid absorption of moisture, so that they May only be exposed to the ambient air for a very short time in order not to have excessive pre-loading of the desiccant when assembling the insulating glass pane. According to DIN EN 1279-6 (2018), the initial Ti loading before aging for a desiccant integrated in a polymer matrix must be less than 20% of the moisture absorption capacity (Tc). In this respect, a slower moisture absorption offers increased security during processing in terms of avoiding too high an initial loading.

The determination of the moisture absorption capacity can be carried out using the standard DIN EN 1279-4 Appendix F (2018).

For the thermal insulation effect of the spacers according to the invention, it is advantageous if the first plastic material has a specific thermal conductivity of about 0.6 W / (nrK) or less, in particular of about 0.4 W / (nrK) or less. Ideally, the lowest possible thermal conductivity of the spacer is sought. This can be achieved through a suitable choice of material and / or porosity.

Preferred spacers according to the invention have a profile body, in particular a special desiccant body, which has several spaced apart, parallel to the longitudinal direction ribs on the inner surface. This measure can enlarge the inner surface of the spacer, which is arranged towards the interior of the pane, so that water vapor can be absorbed more quickly. Furthermore, the appearance of the spacer can also be positively influenced with this structure.

In certain embodiments of the present invention, the profile body has on the inner surface a parallel to the side surfaces of the profile body and spaced apart continuous groove for receiving a glass pane edge of a further glass pane, optionally the profile body on the inner surface two parallel to the longitudinal direction of the profile - having extending body, spaced apart projections, between tween which the groove is formed. Triple glazing can thus be implemented in a simple manner.

In a variant of the spacer according to the invention, the groove for receiving the edge of the glass pane is formed on the base body.

Alternatively, the groove for receiving the edge of the glass pane of the further glass pane can also be formed on the drying agent body.

The triple glazing can be produced particularly efficiently with these spacers according to the invention. Compared to the use of two conventional spacers placed parallel to one another, only a single spacer has to be handled and thus an offset of the spacers of the one space between the panes with respect to the spacer of the other space between the panes is avoided. In addition, the heat conduction is reduced in the spacer according to the invention, since the center disk does not interrupt the better insulating spacer according to the invention. In addition, there are only two sealing levels on the side surfaces of the spacer according to the invention and not four, as is the case with the conventional use of one spacer per pane space.

The groove is preferably designed in such a way that it can hold the edge of the further glass pane in a non-positive manner, the base body or the desiccant body in the area of the groove preferably being made of a material that the glass pane edge is held in the groove with a clamping force, which is sufficient to hold the weight of the spacer. More preferably, the spacer is also designed so that the clamping force of the groove is sufficient to compensate for the restoring forces of the unrolled spacer or of its base body and possibly of its drying medium body. This considerably simplifies the production of triple insulating glass panes. With an appropriate design of the clamping force, it is still possible to absorb and transfer the weight of the middle pane via the vertically arranged sections of the spacer frame, so that the lower part of the spacer frame does not have to bear any weight or only part of the weight of the middle pane during assembly . With an appropriate design, support of the lower spacer frame part can then be dispensed with. Without sufficient clamping force, the lower part of the spacer frame and its gluing with the glass panes would have to absorb the entire weight of the middle pane of glass or, as described above, the middle pane of glass would have to be supported by the assembly device to prevent excessive bending or displacement of the spacer relative to the To prevent glass pane.

In addition, an adhesive can also be provided in the groove in order to additionally fix the middle glass pane.

The groove for receiving the edge region of a third pane of glass can also be provided by a separately manufactured component which is connected to the base body via a functional element and which will be explained below.

In such embodiments, the spacer according to the invention will often have two spaced projections extending parallel to the longitudinal direction of the Profilkör pers on the inner surface, between which the groove is formed. A receptacle for the edge region of a third pane of glass can thus be created in a simple manner, the material requirement being kept to a minimum and / or the rollability or coilability being additionally optimized. The spacers according to the invention often have a drying medium body with a width which essentially corresponds to the width of the base body. The desiccant body can then form the visible surface of the spacer facing the space between the panes when the spacer is installed.

According to one embodiment of the spacer according to the invention, the profile body comprises a cover element which is arranged on the side of the inner surface of the spacer and forms one or more receiving chambers with the base body, in which the drying agent body can be arranged as a whole or in parts. The cover element can optionally be designed in one piece with the base body or as a separate functional element.

According to a variant of such spacers, the cover element extends essentially from one side surface of the profile body to the other side surface.

Optionally, the cover element has a groove which is spaced apart from the side surfaces parallel to the longitudinal direction of the profile body and which is designed to receive a glass pane edge of a further glass pane be.

It is often provided that the base body and the desiccant body are releasably connected to one another, the desiccant body being reversibly connectable to the base body by a form fit and / or force fit. In certain embodiments, it can also be provided that the drying center body is firmly connected to the base body.

Furthermore, one or more functional elements can be formed in the spacers according to the invention on the inner upper surface of the base body and / or on the side walls of the profile body, in particular in the form of grooves and locking projections. These can be used to connect the base body and the desiccant body.

In addition, the spacers according to the invention can have one or more positively and / or non-positively connected construction parts with the functional elements, the components being selected in particular from desiccant carriers, receiving elements (grooves) for glass panes and decorative elements. If necessary, the desiccant carriers can be used in addition to the desiccant body.

In the case of spacers according to the invention, the outer surface of the profile body is often designed to be essentially planar. The inner surface of the Pro filkörpers can also be planar.

In those cases in which one or both of the plastic materials of the spacer according to the invention has / have a pore structure or porosity at least in some areas, the mean pore size is preferably approximately 5 μm to approximately 150 μm. The pore volume is preferably approx.

40% by volume or less, preferably about 10% by volume to about 35% by volume, of the volume of the profile body.

The mean pore size can be determined optically or through an X-ray tomographic analysis, for example, using a sectional or micrograph.

The porosity allows various product properties such as weight per meter, rigidity, strength (Shore hardness), thermal conductivity, the kinetics of moisture absorption and sound insulation to be specifically influenced.

In preferred spacers according to the invention, the base body or its plastic material has a Shore hardness D (measured based on DIN ISO 1976-1; 2012) of approx. 30 or more, preferably approx. 40 or more, most preferably approx. 50 or more. In a further embodiment of the spacers according to the invention, the base body has recesses on an outer and / or inner surface and / or on the side walls at regular intervals that run essentially perpendicular to the longitudinal direction of the profile body, in particular in the shape of a slot or wedge. This makes it easier to roll up the base body.

This gives you greater flexibility in the selection and composition of the plastic material of the base body, as well as its geometric configuration.

Preferred spacers according to the invention comprise a barrier layer on the outer surface of the base body with a barrier effect against gases, in particular against argon and oxygen and / or water vapor. The barrier layer is preferably selected from a metal foil, in particular with a thickness of up to approximately 100 μm, more preferably with a thickness of approximately 10 μm to approximately 50 μm. The preferred barrier layer is a rolled stainless steel foil or a rolled aluminum foil, a multi-layer foil with a polymer-based carrier foil and at least one layer made of metal, metal oxide or ceramic, a coating with platelet-shaped nanoparticles, in particular in the form of sheet silicate, a flexible glass layer , a diffusion-inhibiting polymer film or a polymer film laminate is used.

Alternatively, spacers according to the invention can have a barrier layer on the outer surface of the base body with a barrier effect against gases and / or air humidity, the barrier layer being designed as a coating on the base body and preferably a layer of metal, metal oxide or ceramic, platelet-shaped nanoparticles, in particular special Form of layered silicate includes.

In preferred spacers according to the invention, the base body and / or the desiccant body of the spacer are designed in such a way that that they can be continuously joined to one another in the longitudinal direction without any auxiliary material, in particular by means of a form fit or material fit, the spacers preferably being joinable to one another in the longitudinal direction by means of hooking, clipping or welding.

The present invention also relates to insulating glass panes with two outer glass panes held at a predetermined distance by a spacer frame, the spacer frame being made using a spacer according to the invention.

In insulating glass panes according to the invention, the two outer glass panes in the area of the side surfaces of the base body are preferably glued to the spacer according to the invention by means of a primary sealant, the primary sealant preferably being selected from synthetic rubber, polyisobutylene, butyl rubber, polyurethane, silicone polymer, silane-modified polymer , Polysulfide and polyacrylate.

The composite formed by the glass panes and the spacer frame by means of a primary sealant preferably has a strength that is sufficient to initially fix the spacer to the glass panes with its own weight without aids.

In one embodiment of the insulating glass pane according to the invention, a secondary sealant is applied over the entire surface in the area of a circumferential surface of the insulating glass pane, which is formed by the outer surface of the base body, the sealant application extending in particular continuously from one glass pane to the other glass pane and sealingly to the Glass panes.

A material in particular in the form of polysulphide, polyurethane, silicone polymer and butyl-based hotmelt is used as the secondary sealant. Alternatively, it can be provided that the sealant is applied in an edge area of the insulating glass pane only in the areas of the outer surface of the spacer that are adjacent to the side surfaces of the base body and the glass panes resting there on the outside. The secondary sealant is preferably applied in a wedge-shaped manner to the two outer glass panes on the outer edge of the insulating glass pane.

In preferred insulating glass panes according to the invention, it can be provided that the sealant application of primary and secondary sealant extends continuously between the side surfaces of the base body and the first and second glass panes and over the outer surface.

The insulating glass pane according to the invention can be designed as a triple insulating glass pane, the profile body of the spacer having a groove on the side of the inner surface into which a third glass pane is inserted with its edge.

This groove is preferably designed in such a way that it can receive the edge of the further glass pane positively and / or non-positively, the profile body in the region of the groove preferably being made of a material such that the glass pane edge can be received in the groove with a clamp force takes place, which is sufficient to hold the weight of the spacer.

More preferably, the spacer is also designed so that the clamping force of the groove is sufficient to compensate for the restoring forces of the unrolled spacer. This makes the production of triple insulating glass panes much easier. With an appropriate design of the clamping force, it is still possible to absorb and transfer the weight of the middle disk via the vertically arranged sections of the spacer frame, so that the section of the spacer frame arranged below does not have any weight or only part of the weight of the middle disk during assembly must wear. With an appropriate interpretation can then on a support of the lower spacer frame section can be dispensed with. Without sufficient clamping force, the lower section of the spacer frame and its adhesive bond with the glass panes would have to absorb the total weight of the middle pane of glass or, as described above, be supported by the assembly device to prevent excessive sagging or displacement of the spacer.

With regard to the glass panes that can be used for the insulating glass panes, there are no restrictions when using the spacers according to the invention. In particular, in addition to all types of common glass panes, glass panes made of polymer materials, in particular also plexiglass panes, can be used. In the case of insulating glass panes with more than two panes of glass, polymer films can also be used as a substitute for the pane (s) to be arranged in the center.

These and other advantageous embodiments of the invention from standholders and insulating glass panes formed using the same are explained in more detail below with reference to the drawing. They show in detail:

Figures 1A to ID a first embodiment of a spacer according to the invention from bodies with several variations of desiccant;

Figures 2A to 2F a second embodiment of an inventive

Spacer in several variations, partly built into insulating glass panes;

FIGS. 3A to 3E show a third embodiment of a spacer according to the invention in several variations; FIGS. 4A to 4C inventive spacers in a (partially given) installation situation in insulating glass panes;

FIGS. 5A to 5C show a schematic test set-up for determining the deflection of base bodies of spacers according to the invention perpendicular to their outer surface;

FIGS. 6A to 6C show a schematic test set-up for determining the deflection of base bodies of spacers according to the invention perpendicular to a side surface;

FIGS. 7a to 7i show schematic profile geometries of the base body / spacer profiles a) to i) according to Table 1;

FIGS. 8A to 8C, measurement curves obtained with different types of base bodies / spacers in a test setup according to FIGS. 5A, 5C or 6A and 6B;

FIG. 9 shows a further embodiment of the spacer according to the invention, installed in an insulating glass pane;

FIG. 10 shows a further embodiment of the spacer according to the invention, installed in an insulating glass pane;

FIG. 11 shows a further embodiment of the spacer according to the invention, installed in an insulating glass pane;

FIG. 12 shows a further embodiment of a base body of a spacer according to the invention; and FIGS. 13A to 13F show further embodiments of basic bodies of spacers according to the invention, which can be joined to one another without auxiliary substances.

Figure 1 shows a first embodiment of a spacer according to the invention in several variations in cross section perpendicular to its longitudinal direction.

1A shows, together with FIGS. 1B to 1D, a spacer 10 according to the invention, which comprises a profile body 12 with a rollable or coilable base body 14 and a drying agent body 16. The desiccant body 16 can also be designed so that it can be rolled up.

The base body 14, based on a first plastic material, is designed with a substantially rectangular cross-section perpendicular to its longitudinal direction and has two side surfaces 18, 20 which run parallel to its longitudinal direction and are spaced apart from one another. On its outer surface in the installed state in an insulating glass pane, hereinafter referred to as outer surface 22 for short, the profile body has a diffusion barrier layer 24, which preferably extends from one side surface 18 of the base body 14 via the outer surface 22 to the other side surface 20 of the base body 14 extends and more preferably covers the side surfaces 18, 20 of the base body 14 substantially completely.

In the installed state, the outer surface 22 is arranged adjacent to the pane edge of the insulating glass pane.

On the surface 26 opposite the outer surface 22, hereinafter also referred to as the inner surface for short, the base body 14 optionally has two grooves 28, 30 extending in the longitudinal direction of the base body 14, which are used to accommodate corresponding projections 32, 34 of a trough Ckenmittelkörpers 16 (Figure 1B) are used in the form and force fit. The drying agent body 16 otherwise has a substantially rectangular cross section perpendicular to its longitudinal direction.

The desiccant body 16 is made of a water vapor-permeable second plastic material, in which a particulate desiccant is embedded in a substantially evenly distributed manner.

The first plastic material preferably comprises a polymer which is selected from polyolefins, polyketones, polyesters, vinyl polymers, polyamides or blends of two or more of these polymers, the polymer or polymers preferably made from polypropylene, polyethylene, styrene-acrylonitrile copolymer (SAN), acrylic-butadiene-styrene copolymer (ABS), acrylic ester-styrene-acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6), polyamide 66 (PA66), polyethylene terephthalate (PET) is.

In the present example, the first plastic material used is polypropylene with a glass fiber content of 40% by weight. The first plastic material is optionally foamed. The pore volume can be approximately 20% by volume, for example. Typically, the base body and the drying agent body of a spacer according to the invention are each produced in an extrusion process.

The second plastic material preferably comprises a thermoplastic polymer and / or an elastomer, the thermoplastic polymer being selected in particular from polyolefins, polyketones, polyesters, vinyl polymers, polyamides, polyurethanes or blends of two or more of these polymers, particularly preferably made of polypropylene , Polyethylene, styrene-acrylonitrile copolymer (SAN), acrylic-butadiene-styrene copolymer (ABS), acrylic ester-styrene-acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6), polyamide 66 ( PA66), polyethylene terephthalate (PET) and their blends. The elastomer is selected in particular from silicone polymers, styrene copolymers, EPDM and their blends. The thermoplastic elastomer (TPE) and its blends are preferably based on polyurethane, polyamide, polystyrene, copolyester and / or polyolefin.

The particulate desiccant is preferably selected from silicates, sulfates, oxides, in particular in the form of zeolite, calcium sulfate, silica gel, sheet silicate, tectosilicate, phosphorus oxide, aluminum oxide, alkali oxide and / or alkaline earth oxide or mixtures thereof, the desiccant being particularly preferably a zeolite 3A with an average pore size of approx. 3 angstroms.

The particulate desiccant is typically used in a proportion of about 10% by weight or more, preferably about 25% by weight to about 65% by weight, further preferably about 40% by weight to about 65% by weight .-%, embedded in the second plastic material, each based on the total weight of the Trockenmit te Ikörpers.

A broader selection of polymers is available for the selection of the first plastic material, since the aspect of sufficient water vapor permeability on the one hand and not too great a water vapor permeability on the other hand can be disregarded here. Nevertheless, the first and the second plastic material can of course be based on the same polymer.

The desiccant body 16 with its projections 32, 34 can simply be inserted into the grooves 28, 30 of the base body 14. The forces of the positive and frictional connection achieved are typically sufficient to hold the formed profile body 12 together with sufficient stability so that it can be processed into a spacer frame of an insulating glass pane in a simple manner and without special measures.

The projections 32, 34 of the drying agent body 16 are formed on a surface 36 which, in the assembled state of the drying agent body 16, rests against the inner surface 26 of the base body 14. That of the surface 36 opposite surface 38 of the desiccant body 16 forms in the ver built state of the spacer 10 whose visible inner surface remains.

Alternatively, the desiccant body 16 can be materially connected to the base body 14, e.g. by means of plastic welding or adhesive connections. In the base body 14, the grooves 28, 30 can then fall ent. In the case of the drying agent body 16 shown in FIG. 1B, the projections 32, 34 can then correspondingly be omitted.

Further variants of a drying agent body 16 ', 16 "are shown in FIGS. IC and ID.

The variants of the drying agent body designated by the reference numeral 16 ', 16 "have no projections on the surface 36', so that the drying agent body 16 ', 16" must be firmly bonded to the base body 14. Alternatively, the base body 14 can be equipped with side walls and latching projections formed on these, which encompass the drying agent body 16 'or 16 "on both sides on its surface 38' or 38", similar to what is shown in an embodiment of the spacer according to the invention in FIG. 2A is.

The desiccant body 16 'has on its surface 38' a groove 40 'which, viewed in cross section, is delimited on both sides by projections 42', 44 '. The groove 40 'serves to accommodate an edge region of a third glass pane, which divides the interior of the insulating glass pane to be formed into two partial volumes, similar to that shown in FIGS. 4A and 4B. The partial volume can be made the same size or different sizes, as in the present embodiment.

Another variant of the drying center body 16 "(FIG. ID) also has a groove 40" on its inner surface 38 ", which is also delimited by projections 42", 44 ". In contrast to the inner surfaces 38, 38 ' the desiccant body 16, 16 ', the inner surface 38 ″ of the desiccant body 16 ″ is structured, ie provided with ribs 46 ″ which run parallel to the longitudinal direction of the desiccant body 16 ″ and are substantially evenly spaced from one another.

The ribs 46 "enlarge the surface 38" and thus contribute to an accelerated absorption of moisture from the space between the panes of an insulating glass pane in the drying agent body. At the same time, an optical modification of the inner surface of the holder 10 according to the invention can be made.

2A shows a second embodiment of a spacer 70 according to the invention with a profile body 72 which comprises a base body 74 and a drying center body 76.

With its side walls 78, 80 projecting beyond its inner surface, the base body 74 forms a U-shaped profile with a receiving area 82, as is illustrated again in FIG. 2B. In the receiving area 82, the desiccant body 76 can be used. The side walls 78, 80 here form the side surfaces of the base body 74.

A diffusion barrier layer 81 extends on the outer surface of the base body and extends from the side surface of the first side wall 78 over the outer surface to the side surface of the second side wall 80 and covers these side surfaces to a large extent.

At the respective free ends of the side walls 78, 80, projections 84, 86 pointing in the direction of the receiving area 82 are formed (see FIG. 2B), which serve to form a positive connection between the base body 74 and the drying agent body 76. For this purpose, the side surfaces of the desiccant body 76 facing the side walls 78, 80 of the base body then have recesses 88, 89 in which the projections 84, 86 engage in the assembled state of the profile body 72 (FIG. 2A). This can be done at the same time can be achieved that the drying medium body essentially covers the free ends of the side walls 78, 80 so that the inner surface of the spacer profile, which remains visible in the installed state, has a uniform appearance.

The profile body 72 has a width B of approximately 19.5 mm and a height H of approximately 6.5 mm, which results in an aspect ratio A = B / H of approximately 3.

FIG. 2B shows a variant of the configuration of the diffusion barrier layer 81 in which the respective end regions 81a, 81b of the layer are embedded in the side walls 78, 80, as is known per se for diffusion barrier layers, for example from DE 10 2010 006 127 A1.

Figures 2C and 2D show modified base bodies 74 'and 74 ", in which reinforcing elements 92 and 94, 96 are embedded in the first plastic material in order to increase the flexural rigidity of the base body 74 perpendicular to the side surfaces and to the outer surface and thus the To modify spacer 70 and optimize for the given application.

The reinforcing element 92 is preferably a metal band, for example a stainless steel band with a thickness of about 50 to 100 µm.

In the variant shown in FIG. 2D, wire-shaped reinforcing elements 94, 96 are embedded in the first plastic material, which are e.g. formed as steel wires with a diameter of approx. 400 to 800 μm. Alternatively, fiber bundles or rovings, in particular made of glass fibers, can also be used as reinforcement elements 94, 96 instead of the wires.

Due to the small cross-sectional area of the reinforcing element 92 and the small extent of the wire-shaped reinforcing elements 94, 96 in the width direction, their influence on the thermal conductivity of the spacer age is small overall. FIG. 2E shows the spacer 70 of FIG. 2A in an installation situation in an insulating glass pane 100, a first glass pane 102 being arranged on the side surface of the side wall 78 of the spacer 70 and a second glass pane 104 resting on its second side surface of the side wall 80. The two glass panes 102, 104 are each connected to the spacer 70 via a primary sealant, for example a butyl adhesive mass 106, 107. The two glass panes 102, 104 are held by the spacer 70 in a parallel arrangement at a predetermined distance from one another. The top side of the base body 74 forms the outside or the outside edge region of the insulating glass pane 100 and is typically covered with a diffusion barrier layer 81 (not shown here), as can be seen from FIG. 2A.

The butyl adhesives 106, 107 are applied to the spacer 70 essentially over the entire surface of the side walls 78, 80 and form an integral connection to the glass panes 102, 104. On the outer edge region of the insulating glass pane 100, secondary sealants 108, 109 form a wedge-shaped configuration when viewed in cross section.

The base body 74 of the spacer 70 was slightly modified in the variant shown in FIG. 2E compared to the embodiment shown in FIG. 2A, in that outwardly protruding projections 90, 91 are formed on the free ends of the side walls 78, 80, which form the gap for receiving primary butyl sealant along the side surfaces of the base body 74 in the direction of the space 110 between the panes.

Another installation situation of the spacer 70 of FIG. 2A in an insulating glass pane 120 is shown in FIG. 2F. In this variant, the secondary sealant 126 is applied over the entire outer surface of the base body 74 of the spacer 70, so that the secondary sealant 126 extends from one pane of glass 122 to the other pane of glass 124. At this variant can optionally be dispensed with a separate barrier or vapor barrier layer on the outer surface of the base body 74 and / or a primary sealant 128, 129 along the side surfaces of the base body if the secondary sealant has a sufficiently high barrier effect, as is the case, for example, with hotmelt butyl adhesives.

Another embodiment of the spacer 140 according to the invention is shown in FIG. 3A, the spacer 140 again comprising a profile body 142 with a base body 144 and a drying center body 146. The side surfaces of the spacer 140 are formed by side walls 148, 150 which are formed on both sides of the base body 144.

A diffusion barrier layer 151 is provided on the outer surface of the base body 144, which extends from the side surface of the side wall 148 over the outer surface to the side surface of the side wall 150 and covers both side surfaces for the most part or substantially completely.

In the center of the base body 144, a receptacle 152 for the edge region of a third glass pane (not shown) is formed, which is laterally limited by two projections 154, 156 projecting perpendicularly from the inner surface of the base body 144.

The desiccant body 146 has two block-shaped partial volumes 146a, 146b, which each adjoin one of the two side walls 148 or 150 and one of the two projections 154 or 156 and are held in a form fit by the side walls 148, 150 via locking projections 158, 159.

The two partial volumes 146a, 146b are connected to one another via a U-shaped section 160 which extends into the receptacle 152 and lines it. When the edge region of a third glass pane is inserted, it is received in the U-shaped section within the receptacle 152 in a non-positive and positive manner. The desiccant body 146 or its partial volumes 146a and 146b have an inner surface pointing towards the space between the panes, which in this exemplary embodiment is essentially planar.

FIG. 3B shows a variant of the spacer 140 of FIG. 3A in the form of a spacer 180, which is constructed essentially the same as the spacer 140, so that reference can be made to the description thereof with regard to the details.

A profile body 182 comprises a base body 184 and a drying agent body 186. Unlike the embodiment of Figure 3A, the surface 188 directed towards the space between the panes of the insulating glass pane is formed with ribs 190 running parallel to the longitudinal direction of the desiccant body, which, viewed over the cross section, are evenly distributed on the Surface 188 are arranged.

FIG. 3C shows a further variant of the spacer of FIG. 3A in the form of a spacer 200. The spacer 200 comprises a profile body 202, which in turn comprises a base body 204 and a drying agent body 206. The base body 204 has two parallel side walls 208, 210 and in the center a receptacle 212 for the edge region of a third glass pane. The receptacle 212 is delimited by two projections 214, 216, which extend away from the inner surface of the base body 204 essentially perpendicularly.

The desiccant body 206 is designed in two parts here, with a part of the desiccant body 206 being received between the side walls 208, 210 of the base body 204 on the one hand and the jumps 214, 216 delimiting the receptacle 212 on the other hand.

The aspect ratio A = B / H in this exemplary embodiment as well as in the exemplary embodiments in FIGS. 3A and 3B is approximately 4.5. FIGS. 3D and 3E show alternative embodiments for the base bodies 144, 184, 204 of the spacers 140, 180 and 200 according to the invention shown in FIGS. 3A to 3C.

The base body 220, 230 of FIGS. 3D and 3E have the same cross-sectional structure as the base body 144, so that reference can be made to the description thereof with regard to the details.

While in the case of base bodies of the base body 144 type, polymers with reinforcing additives, such as glass fibers, are often used as the first plastic material in order to achieve the desired mechanical properties, namely rollability on the one hand and limited deflection under load and flexural rigidity on the other in the case of the base bodies 220, 230, reinforcing elements are embedded in the first plastic material.

In the base body 220, in the wall area adjacent to the outer surface, metallic sheet materials 222, 224, for example in the form of stainless steel bands, are embedded, which can be varied in width and thickness in order to meet the specified parameters for the above properties together with the plastic material to meet. The two flat materials 222, 224 can also form a continuous element which extends approximately over the entire width of the base body, comparable to the embodiment of FIG. 2C.

In the base body 230, wire-like elements or rovings made of glass fibers are embedded in the first plastic material both in the wall area adjacent to the outer surface and in the side walls and projections as reinforcing materials 232, 234. Both with the variant of the base body 220 and with the variant 230, suitable dimensioning as well as the selection of the material and the positioning of the reinforcement elements ensure that the thermal resistance of the respective base body is not significantly reduced.

FIG. 4A shows a spacer 250 according to the invention in cross section with a profile body 252 which comprises a rollable base body 254 and a desiccant body 256.

The base body 254 is formed on both sides with side walls 258, 260, which provide side surfaces for the contact of a first and a second glass pane (not shown). At the free ends of the side surfaces 258, 260, latching projections 262, 264 directed towards the center of the base body 254 are formed. The base body 254 is formed with a receptacle 265 for the edge region of a third glass pane 266 in the center of a surface (inner surface) facing in the direction of the space between the panes in the insulating glass pane. The receptacle 265 is delimited by projections 268, 269 on both sides, viewed in cross section.

The desiccant body 256 comprises two interconnected partial bodies 270, 272 which are each arranged between a side wall 258, 260 and an adjacent projection 268, 269 on the inner surface of the base body 254. The two partial bodies 270, 272 are connected to one another via a U-shaped element 274 which, on the one hand, engages in the receptacle 265 and, on the other hand, provides a groove 276 for receiving the edge region of the third glass pane 266.

The projections 268, 269 have a slight wedge shape, such that the receptacle 265 is wider at the closed end than at the open end, so that the U-shaped element 274 can be received in a form-fitting and non-positive manner. This also enables the edge region of the third glass pane 266 to be received in the groove 276 with a form fit and force fit.

FIG. 4B shows a variant of the spacer 250, the spacer 280 shown here having a profile body 282 with a base body 254 which corresponds to the base body 254 of the embodiment of FIG. 4A, so that the same reference numerals are used.

The desiccant body is in two parts from the partial bodies 284, 286, which are each received between the side walls 258, 260 and the respective adjacent projections 268, 269 in a force and form fit. For this purpose, the sub-bodies 284, 286 have recesses on their side faces facing the side walls for receiving the locking projections 262, 264 of the side walls 258, 260. The partial bodies 284, 286 extend in the width direction of the spacer 280 essentially from the outer side surfaces of the side walls 258, 260 to over the projections 268, 269 delimiting the receptacle 265 and thus also partially limit the receptacle 265 for the edge area of the third Glass pane 288. The glass pane 288 can have a greater thickness than in the case of the embodiment of FIG. 4A, since the two-part design of the drying center body 284, 286 means that the entire width of the receptacle 265 can be used for the edge region of the glass pane.

FIG. 4C shows a further embodiment of an inventive spacer 290 with a profiled body designed for triple glazing, which has a base body 291 and a two-part drying agent body 292a, 292b.

The base body 291 has two parallel side surfaces 293, 294, a planar outer surface and an inner surface, with a groove 296 placed centrally on the inner surface being provided for receiving a third glass pane 297. A barrier layer 295 is placed on the outer surface of the base body 291 and extends from the one side surface 293 over the outer surface to the side surface 294.

The inner surface is concave in the two areas which each extend from the Be tenflächen 293, 294 to the groove 296. The partial bodies 292a, 292b of the desiccant body, which are formed in a complementary part-circle shape, are arranged in these concave areas and are fixed to the base body 291 by means of an adhesive compound or a welded joint.

The side surfaces 293, 294 are slightly curved outward at their end regions 298, 299 adjacent to the inner surface, so that, similar to that shown in FIG. 2E, outwardly protruding projections are formed which form a gap between the side surfaces and the glass panes resting on them (not shown here ) in the direction of a space between the panes.

FIG. 5A schematically shows a test arrangement 300 for determining the deflection of a base body of a spacer according to the invention (here the base body 74 as an example) or also the bending stiffness according to DIN EN ISO 178 (2013-09). The sample of the base body used for testing has a length Lp and is positioned on two support bodies 302, 304, the support points maintaining a predetermined distance Ls of 100 mm from one another, also referred to below as the support width. The two support bodies 302, 304 define a support plane.

In the center of the support width Ls, a partially cylindrical punch 306 with a planar contour is positioned, with which a force F can be initiated on the base body 74 of the spacer perpendicular to the support plane.

For the rollability or coilability of the base body of the fiction, contemporary spacer, the deflection is compared to an unloaded Condition of importance which is measured on the outer surface of the respective base body to be tested (here the diffusion barrier layer 81 of the base body 74), the force F 50 N acting via the punch 306 being (test method A).

In FIG. 5B, the base body 74 of the spacer is shown in an orientation in which its outer surface, which rests on the support bodies 302, 304 during the test, points downward.

In FIG. 5C, the test arrangement 300 with the base body 74 is shown in a sectional view along the line VC-VC in FIG. 5A perpendicular to the longitudinal direction of the base body 74 and parallel to the direction of the acting force F.

The base body 74 can preferably be rolled up in such a way that a deflection with a force of 50 N acting in the middle of the support width is more preferred than in an unloaded state of about 0.8 mm or more, preferably about 1 mm or more is about 1.2 mm or more. The upper limit of the deflection is typically around 25 mm, preferably 10 mm, more preferably 5 mm. The deflection is measured on the outer surface (here: barrier or vapor barrier layer 81) of the base body 74 when it rests on the two support bodies 302, 304 with a span of 100 mm, measured in the longitudinal direction of the base body 74. The force of 50 N is introduced into the base body 74 perpendicular to a support plane defined by the support bodies 302, 304 (test method A; see FIGS. 5A and 5C).

For the handling of the spacers according to the invention in the manufacture of the insulating glass panes, it is preferred if the base bodies of the spacers have flexural rigidity when a force is introduced perpendicular to one side surface. Sufficient flexural rigidity of the base body is given, in particular, if the bending of the base body of the spacer in a positioning according to FIGS. 6A and 6B in an in the center of the support width Ls acting force of 100 N compared to an unloaded state is approx. 10 mm or less, preferably approx. 5 mm or less, more preferably approx. 3 mm or less (test method B).

The deflection is determined on the side surface of the base body, which rests on the two support bodies 302, 304 of the test arrangement 300 with a support width Ls of 100 mm, measured in the longitudinal direction of the spacer. This test requires an orientation of the base body, as shown in the partial figure 6C. For the test to be carried out properly, the base body of the spacer can be held in the orientation shown in FIGS. 6A and 6B by means of guide elements 310, 312 without this noticeably affecting the measurement results. The guide elements 310, 312 can be fixed in a parallel arrangement at a predetermined distance from one another, so that the base body 74 can be accommodated in between with little play.

As already mentioned, a span or support distance Ls of 100 mm and a length of the specimen Lp of approx. 150 mm are used as test parameters for the measurement of the flexural strength in accordance with DIN EN ISO 178 (2013-09). The other test parameters are:

Preload: 1 N (test method variant A and B)

Test speed: 10 mm / min (test methods A and B)

Radii RI (punch 306) and R2 (support body 302, 304): 5 mm

After the base body to be tested is placed on the support bodies 302, 304, the stamp 306 is brought into contact with the base body with the preload, which is thus stabilized in its position. The test stamp 306 is then moved vertically downwards at the specified test speed, with the force acting on the test body (base body) being recorded as a function of the travel path covered by the test stamp 306 (see FIGS. 8A to 8C). This distance essentially corresponds to the deflection of the test body. The base body or spacer profile is placed with the outer surface facing down (test method A - for deflection in the longitudinal direction; Figure 5A) and the outer surface to the side (test method B - for deflection or flexural rigidity in the transverse direction; Figure 6A).

In the test method variant A, the outer surface is defined as the side which, when the spacer is installed in an insulating glass pane, is arranged adjacent to the outer circumference of the insulating glass pane. The stamp 306 of the test arrangement 300, also called the pressure fin, presses when the three-point bending is performed, coming from above, vertically downwards at Ls / 2 on the sample (here: base body 74).

If, in the test method variant B, the base body twists heavily and deviates significantly from the desired orientation during the measurement, a suitable guide device must be used to keep the test body in the vertical orientation. The guide can be, for example, one (or, if necessary, two separate) loosely attached guide plate (s), which limit / limit a lateral deflection of the test body, a vertical movement of the test body, especially during the Depression of the pressure fin, but essentially unhindered. This is illustrated in FIG. 6B, the description of which can be referred to here.

The width of the spacers according to the invention or their base bodies is preferably approximately 12 mm to approximately 44 mm, more preferably approximately 14 mm to approximately 40 mm.

The test specimens must be free of visible damage (eg irreversible deformations, cracks, breaks, etc.) and represent a generally good product condition, which also meets the qualitative requirements for installation to form insulating glass panes. It is not necessary to condition the test specimen before the measurement. The test specimens are preferably tested in a normal climate of 23 ° C ± 2 ° C at 50% ± 10% humidity.

The end of the measurement occurs when the test body breaks or is destroyed or when the maximum travel path of the punch 306 is reached.

The measurements are carried out in such a way that the bending profile is recorded and saved and a force-displacement curve is output.

Test methods A and B are carried out on samples according to the invention (Grundkör by) and samples from the prior art (spacers).

A more detailed characterization of the samples can be found in the following table 1. An overview of the profile geometries in a schematic representation is contained in FIG. 7 (sub-figures 7a to 7i).

Sample a) corresponds to an embodiment of a base body of the present invention with the following properties:

The main body is made as a solid profile from polypropylene with 40 wt .-% glass fibers. The geometry corresponds to FIG. 3A. A 10 .mu.m thick stainless steel foil was applied to the base body as a barrier layer. The main body can be rolled up / coilable on a core with a diameter of 300 mm. The main body is designed for triple glazing with two space between panes (SZR) of 12 mm each and a central pane with a thickness of 4 mm.

Sample b) corresponds to an embodiment of a base body of the present invention with the following properties:

The main body is made as a solid profile from polypropylene with 40 wt .-% glass fibers. The geometry corresponds to FIG. 4C. A 10 .mu.m thick stainless steel foil was applied to the base body as a barrier layer. The main body can be rolled up / coilable on a core with a diameter of 300 mm. Of the The base body is designed for triple glazing with two spaces between panes (SZR) of 8 mm each and a central pane with a thickness of 4 mm.

Sample c) is a conventional spacer, which is available under the name ^® Ultra Chromatech F2 by the company Rolltech A / S. The spacer is made of polypropylene and has an approx. 0.1 mm thick stainless steel strip as a barrier layer on its outer surface. The spacer has the shape of a hollow profile and is not coilable. Desiccant can be filled into the hollow chamber of the hollow profile.

Sample d) is a conventional spacer, which is available under the name Multitech ^® by the company Rolltech A / S. The spacer consists of a hollow plastic profile made of styrene-acrylonitrile polymer (SAN) with about 35 wt .-% glass fibers (35 GF), based on the total weight of the spacer age, with a metallized film on the outer surface of the spacer profile as Barrier layer is applied. Desiccant can be filled into the hollow chamber of the hollow profile. The spacer cannot be coiled.

Sample e) is a conventional spacer for triple insulating glass panes, which is available under the name SWISSPACER TRIPLE from SWISS-SPACER Vetrotech Saint-Gobain (International) AG. The two spaces between the panes SZR are each 16 mm in size. The thickness of the middle disk is 2 mm. The spacer also consists of a plastic hollow profile with two hollow chambers made of SAN with approx. 35 wt .-% glass fibers (35 GF), based on the total weight of the spacer, and a metallized plastic film as a barrier layer. Desiccant can be filled into the hollow chambers of the hollow profile. The spacer cannot be coiled.

Sample f) is a conventional spacer is available under the name Thermobar ^® from Thermo Seal Group. The spacer consists of a plastic hollow profile made of polypropylene with approx. 40% by weight Glass fibers (40 GF), based on the total weight of the spacer, to which a metallized film as a barrier layer is applied to the outer surface. Desiccant can be filled into the hollow chamber of the hollow profile. The spacer cannot be coiled.

Sample G) is a conventional coilbarer spacer which is below the drawing Be Super Spacer ^® Premium of Edgetech available. The spacer is made as a solid profile and made of a foamed silicone material in which a desiccant (approx. 47% by weight) is embedded. A metallized film is applied as a barrier layer to the outer surface of the full profile.

Sample h) is a conventional coilable, polyurethane-based spacer available from Glasslam under the name WorldSpacer ™. From the stand holder is made as a full profile and made of a foamed polyurethane material, in which a desiccant (approx. 45 wt .-%) is embedded. An approx. 50 μm thick stainless steel strip is applied as a barrier layer to the solid profile on the outer surface.

Sample i) is a conventional coilable spacer available from the Soytas Group under the name Panaspacer. The spacer is made of a wave-shaped reinforcing element made of polycarbonate, wel Ches takes up most of the cross-sectional area. This reinforcing element is covered with a barrier layer on the side and on the inside. On the inside, over the barrier layer, there is also a foam material in which a desiccant is embedded. The manufacturer does not specify the proportion of desiccant. Table 1

Figures 8A and 8B show the measurement results using such force-displacement curves for a selection of spacers a) and b) according to the present invention and c) to g) according to the prior art, measured according to the test method variant A. Die Measurement curves for samples h) and i) are not shown since their course essentially corresponds to the curve course of sample g), ie a conventional coilable sample.

FIG. 8C shows the measurement results on the basis of force-displacement curves for samples a) and b) according to the invention and the samples according to the prior art c) to e) and g) to i), the three conventional samples g) to i) are rollable or coilable samples. The measurement was carried out in each case according to the test method variant B. Sample f) results in a curve which essentially coincides with that of sample d) and is not shown separately.

FIG. 9 shows an insulating glass pane 350 according to the invention with a spacer 352 according to the invention which holds two outer glass panes 354, 356 parallel to one another at a predetermined distance.

The spacer 352 comprises a profile body 358 which has a base body 360 with a planar outer surface and parallel side walls 362, 364 which are oriented perpendicular to the outer surface and which provide the side surfaces on which the outer glass panes 354, 356 of the insulating glass pane 350 rest. A vapor barrier layer (not shown) can be arranged on the outer surface of the base body 360, which preferably extends from the side surface of the first side wall 362 over the outer surface to the side surface of the second side wall 364 and covers the side surfaces for the most part.

A secondary sealant layer, for example a polyurethane adhesive layer 365, is applied to the outer surface of the spacer 352, which extends from the first glass pane 354 to the second glass pane 356 in a transverse direction. direction of the insulating glass pane 350 over the entire width of the spacer 352 extends. A primary sealant in the form of a butyl adhesive layer 390, 392 is applied to the side surfaces of the side walls 362, 364 and connects this materially with the respective adjacent glass panes 354, 356.

The surface of the base body 360 (inner surface) opposite the planar outer surface is formed in the center with two latching projections 366, 368 which are arranged parallel to the side walls 362, 364 and which run in the longitudinal direction of the base body 360 and provide between them a receptacle 370 into which a Functional element or functional component and / or an edge region of a third glass pane 376 can be used.

In the present exemplary embodiment, a functional component 372 is inserted into the receptacle 370 in a form fit. The functional component can have different functions, even several at the same time.

The functional component 372 here has several functions. First, the functional component 372 forms a receiving groove 374, which receives the third glass pane 376 with its edge area. Furthermore, two surface elements 378, 379 extending from the area of the groove 374 in both directions to the glass panes 354, 356 and the side walls 362, 364 together with the base body 358 of the spacer 352 form closed hollow chambers 380, 382 on both sides of the latching projections 366, 368 which can be equipped with a two-part desiccant body 384, 386 in order to provide the moisture absorption capacity of the spacer 352. In addition, the surface elements 378, 379 serve for the optical design of the spacer 352 on its visible side in the installed state.

A web-like projection 388 can be provided in the receiving groove 374 so that the middle glass pane 376 is not pushed in to the bottom of the groove during assembly. The appropriate interpretation of the Projection 388, it is possible that this is compressed in the event of greater thermal expansion of the central disk 376. This is particularly important in the case of middle panes made of plastic, which panes have a significantly greater thermal expansion compared to the glass panes. The projection acts like a spring that can be compressed if necessary.

In FIG. 10, a spacer 402 according to the invention is shown in the installed state on the edge of an insulating glass pane 400. The spacer 402 holds a first and a second glass pane 404, 406 at a predetermined distance and is firmly connected to them via a primary sealant in the form of a butyl adhesive 444, 446, which is applied to the side walls 416, 418. Secondary sealants 408, 410 with a wedge-shaped cross section are arranged on the outer surface 448.

The spacer 402 has a profile body 412 with a base body 414 with two side walls 416, 418 formed parallel to one another on both sides of the base body 414, the outer side surfaces of which are in contact with the glass panes 404, 406, optionally as in the present exemplary embodiment via a primary butyl Sealant layer 444, 446.

Functional elements protruding vertically in the form of latching projections 422, 424 are formed on the base body 414 of the profile body 412 on its inner surface 420 and extend parallel to one another in the longitudinal direction of the spacer 402. A groove-shaped receptacle 426 is formed between the locking projections 422, 424, into which a function component 428 can be inserted and held by the locking projections 422, 424 in a form-fitting manner.

The functional component 428 is designed with several functions in the present exemplary embodiment. A first function is to provide a groove 430 for receiving the edge of a third pane of glass 432. Further functions are taken over by two surface elements 434, 436, which are located on both sides of the groove 430 in opposite directions to the first or to the second glass pane 404, 406 extend. The surface elements 434, 436 on the one hand cover the inner surface of the profile body 412 and thus offer the possibility of optically modifying the appearance of the spacer 402. On the other hand, the surface elements 434, 436 of the functional component 428 create fillable cavities on their sides facing the base body 414, which in the present embodiment are equipped with a two-part desiccant body 438, 440 which provides moisture absorption capacity. The desiccant bodies 438, 440 can fill the cavities completely or - as shown here - partially, as required.

The spacer 402 can be fitted on its outer surface with a stainless steel band 442, which extends essentially from the first glass pane 404 to the second glass pane 406. The stainless steel band 442 takes on the function of a reinforcing element and at the same time forms a barrier layer in the area of the outer surface of the spacer 402. Since the stainless steel band 442 protrudes slightly over the outer surface in the direction of the side surfaces, a barrier layer on the side surfaces can be dispensed with Connect the butyl compounds 444, 446 from below to the stainless steel band 442 and, together with the stainless steel band 442, create a continuous sealing plane. Due to the straight design of the stainless steel band 442, a larger material thickness can be used for this, with the spacer nevertheless remaining easy to roll up.

Finally, FIG. 11 shows an edge region of an insulating glass pane 450 with two glass panes 454, 456 held at a distance by a spacer 452 according to the invention.

A secondary sealant 460 is applied to the outer surface 458 of the spacer 452 and extends from the glass pane 454 to the glass pane 456 in the transverse direction of the insulating glass pane 450 over the entire width of the spacer 452. The primary ones can be found on the side Sealant compounds (butyl adhesive compounds) 488, 490 between the side walls 466, 468 and the glass panes 454 and 456.

The spacer 452 has a profile body 462 with a base body 464, on which side walls 466, 468 are formed on both sides. On the inner surface of the base body 464 facing away from the outer surface 458, two strip-shaped projections 470, 472 are formed thereon, which form a receptacle 474 between them. A third glass pane 476 can be inserted into the receptacle 474 with a form fit and a force fit. At the closed end of the receptacle 474, a web-like projection is again provided which, as in the embodiment of FIG. 9, takes on the function of a compressible spring.

The base body 464 of the spacer 452 also has two surface elements 480, 482 extending from the area of the protrusions 470, 472 forming the groove 474 in both directions to the glass panes 454, 456 and the side walls 466, 468, which together with the Side walls 466, 468 at a spacing wall of the base body 464 of the spacer 452 form essentially closed hollow chambers on both sides of the projections 470, 472, which are formed with two separate drying agents 484,

486 can be equipped in order to provide the moisture absorption capacity of the spacer 452. For filling, the surface elements 480, 482 can be raised or bent up in order to remove the desiccant bodies 484,

486 to insert. The volume of the desiccant body 484, 486 can be adapted to the requirements given for the insulating glass pane 450. In addition, the surface elements 480, 482 are used for the optical design of the spacer 452 on its visible side in the installed state.

FIG. 12 shows a further embodiment of a base body 500 of a spacer according to the invention. The essentially planar base body 500 has side walls 506, 508 with side surfaces 510, 512 on both sides. In the side walls 506, 508 500 slots 514 are placed at their free ends at regular intervals perpendicular to the longitudinal direction of the base body. On the outer side 516 of the base body 500, slots 518 are also introduced at regular intervals, which extend perpendicular to the longitudinal direction over the entire width of the base body 500.

The slots 514 and 518, viewed in the longitudinal direction of the base body 500, are either arranged offset relative to one another in the longitudinal direction of the spacer, as shown, or can be arranged in an identical position in the longitudinal direction (not shown). This design of a base body 500 according to the invention allows the use of comparatively rigid plastic materials, and yet the ability to roll up or coil the base body 500 is retained. In addition, the restoring forces and deformations that may arise from the winding can be reduced by appropriately designing these slots so that the spacer remains in the desired position simply by gluing it with the primary butyl sealant until the secondary sealant applied afterwards has cured sufficiently.

FIGS. 13A to 13F show, using a base body 74 of a spacer according to the invention according to FIG. 2A, various possibilities for joining end regions of the base bodies of a spacer according to the invention. The joints (end areas) of a section of a base body for producing a spacer frame can also be joined and connected to one another in this way.

FIG. 13A illustrates the production of a butt joint 600 of base body end regions 602, 604 by means of plastic welding, for example using an ultrasonic welding or mirror welding technique. The upper part of the figures shows the cross section perpendicular to the longitudinal direction of the base body 74. The middle part of the figures shows the base body end areas 602, 604 in a plan view of the inner surface of the base body 74, the illustrations placed to the side thereof each show a side view of the side walls 78 and 80, respectively. The butt joint 600 produced by welding preferably extends from a side wall 78 via the base body 74 to the side wall 80.

Figure 13B illustrates the production of a further variant of a butt joint 610 of modified base body end areas 612, 614 by means of plastic welding, e.g. using an ultrasonic welding or mirror welding technique, or also by means of an adhesive technique, e.g. with the help of a metallic adhesive tape (not shown). The two end regions 612, 614 are each provided with complementary projections and recesses 616, 618.

The middle part of the figures again shows the base body end regions 612, 614 in a plan view of the inner surface of the base body 74; the illustrations placed to the side thereof each show a side view of the side walls 78 and 80. The butt joint 610 produced by welding preferably extends from one Side wall 78 over the base body 74 to the side wall 80.

Figure 13C illustrates the production of a further variant of a butt connection 620 of spacer end areas 622, 624 by means of a form-fitting clip connection, which may be made by means of plastic welding, e.g. using an ultrasonic welding or mirror welding technique, or also by means of an adhesive technique, e.g. using a metallic adhesive tape (not shown), can also be secured.

The middle part of the figures shows the again the Grundkörperendbe rich 622, 624 in plan view of the inner surface of the base 74, the laterally placed illustrations each show a side view of the side walls 78 and 80. The butt joint 620, possibly secured by welding, extends preferably extends from one side wall 78 over the base body 74 to the side wall 80. Figure 13D illustrates the production of a further variant of a butt connection 630 of base body end areas 632, 634 by means of a form-fitting clip connection, which may be made by plastic welding, e.g. using an ultrasonic welding or mirror welding technique, or by means of an adhesive technique, e.g. with the help of a metallic adhesive tape (not shown), can be secured. For this purpose, the end areas 632, 634 are provided with complementary projections and recesses 636, 638 in the area of the side walls 78, 80, analogous to the variant in FIG. 13B.

The middle part of the figures again shows the base body end regions 632, 634 in a plan view of the inner surface of the base body 74, the illustrations placed laterally therefrom each show a side view of the side walls 78 and 80, respectively. The butt joint 630, possibly secured by welding, preferably extends from a side wall 78 over the base body 74 to the side wall 80.

Figure 13E illustrates the production of a further variant of a butt connection 640 of spacer end areas 642, 644 by means of a form-fitting connection (here a dovetail connection in the area of the base body), which may be made by plastic welding, e.g. using an ultrasonic welding or mirror welding technique, or by means of an adhesive technique , for example with the help of a metallic adhesive tape (not shown), can be secured.

The middle part of the figures again shows the base body end regions 642, 644 in a plan view of the inner surface of the base body 74, the illustrations placed laterally therefrom each show a side view of the side walls 78 and 80. The butt joint 640, optionally additionally secured by welding, extends preferably from one side wall 78 via the base body 74 to the side wall 80. Figure 13F illustrates the production of a further variant of a butt connection 650 of base body end areas 652, 654 by means of a form-fitting hook / clip connection of the side walls 78, 80, which for this purpose provide hook-shaped, complementary projections and setbacks 656, 658 on the end areas 652, 654 are. If necessary, the butt joint 850 can additionally be secured by means of plastic welding, for example using an ultrasonic welding or mirror welding technique, or also by means of an adhesive technique, for example with the help of a metallic adhesive tape (not shown).

The middle part of the figures shows the again the Grundkörperendbe rich 652, 654 in plan view of the inner surface of the base 74, the laterally placed illustrations each show a side view of the side walls 78 and 80. The butt joint 650, possibly secured by welding, extends preferably extends from one side wall 78 over the base body 74 to the side wall 80.

All the embodiments in FIG. 13 have in common that the base body end regions can be fixed to one another when a spacer frame is closed, which simplifies the manufacture of the insulating glass panes.

In addition, the connection techniques shown can also be used to use remnants of the base body of the invention from spacers when producing a spacer frame.

The connection techniques shown with reference to the base body 74 in FIG. 13 can also be used analogously for all base bodies of spacers according to the invention, in particular also for base bodies of spacers according to the invention with a more complex geometry, such as that of the base bodies 144 and 458 of FIGS. 3A and 11. In an analogous manner, the desiccant bodies can also be joined to one another with their end regions according to each variant of FIG.

Claims

1. Spacer for insulating glass panes with a profile body extending in a longitudinal direction, the profile body comprising a base body made from a first plastic material and a separate desiccant body made on the basis of a second plastic material, the base body comprising two spaced-apart side surfaces, on which, when installed in an insulating glass pane, two glass panes aligned parallel to each other rest, the base body having an outer and an inner surface that extend between the side surfaces, the desiccant body comprising a particulate desiccant which is embedded in the second plastic material wherein the base body can be rolled up about an axis perpendicular to the side surfaces, and wherein the base body is designed to be rigid in a plane perpendicular to the side surfaces.

2. Spacer according to claim 1, wherein the base body has on both sides side walls which extend by about 2 mm or more, preferably about 3 mm or more, more preferably about 4 mm or more, beyond the inner surface of the base body and which Form side surfaces of the profile body, wherein the side walls are preferably aligned essentially parallel to one another.

3. Spacer according to claim 1 or 2, wherein the desiccant body has an inner and an outer surface and is arranged with its outer surface facing the inner surface of the base body in the profile body.

4. Spacer according to one of claims 1 to 3, wherein the Grundkör has a rollable, such that a deflection ge compared to an unloaded state about 0.8 mm or more, before given about 1 mm or more, more preferably about . 1.2 mm or more, with the deflection being measured on the outer surface of the base body when it rests on two support bodies with a span of 100 mm, measured in the longitudinal direction of the base body, and one in the middle of the Support width acting force of 50 N, this force being introduced into the base body perpendicular to a support plane defined by the support bodies.

5. Spacer according to one of claims 1 to 4, wherein the Grundkör by the spacer has a flexural rigidity in which a deflection compared to an unloaded state about 10 mm or less, preferably about 5 mm or less, more preferably about 3 mm or less, is measured on a side surface of the Grundkör pers when this is on two support bodies with a span of

100 mm, measured in the longitudinal direction of the base body, and with a force of 100 N acting in the middle of the support width, this force being introduced into the base body perpendicular to the side surfaces.

6. Spacer according to one of claims 1 to 5, wherein reinforcing elements are embedded in the first plastic material of the base body, wherein the reinforcing elements preferably comprise particulate Mate rials, fiber materials, sheet materials and / or wire-like materials.

7. Spacer according to one of claims 1 to 6, wherein the Profilkör by the spacer has a height H of about 7 mm or less, be preferably about 6 mm or less.

8. Spacer according to one of claims 1 to 7, wherein the Profilkör is designed for triple glazing and a width of approx.

30 mm or more and has an aspect ratio A in cross section perpendicular to the longitudinal direction, which is defined as the quotient of the width B of the profile body and the height H of the profile body (A = B / H), the aspect ratio A having a value of approx. 5 or more, preferably a value of approx. 6 or more, particularly preferably a value of approx. 7 or more.

9. Spacer according to one of claims 1 to 8, wherein the first plastic material comprises a polymer which is selected from polyolefins, polyketones, polyesters, vinyl polymers, polyamides or blends of two or more of these polymers, wherein the polymer or polymers are preferably composed of polypropylene, Polyethylene, styrene-acrylonitrile copolymer (SAN), acrylic-butadiene-styrene copolymer (ABS), acrylic ester-styrene-acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6), polyamide 66 (PA66) and polyethylene terephthalate (PET) is / are selected.

10. Spacer according to one of claims 1 to 9, wherein the second plastic material comprises a thermoplastic polymer and / or an elastomer and / or a thermoplastic elastomer (TPE), the thermoplastic polymer being selected in particular from poly olefins, polyketones, polyesters, Vinyl polymers, polyamides, poly urethanes or blends of two or more of these polymers, particularly preferably made of polypropylene, polyethylene, styrene-acrylonitrile copolymer (SAN), acrylic-butadiene-styrene copolymer (ABS), acrylic ester-styrene-acrylonitrile copolymer (ASA), polyvinyl chloride (PVC), polyamide 6 (PA6), polyamide 66 (PA66), polyethylene terephthalate (PET) and their blends, the elastomer being selected in particular from silicone polymers, styrene copolymers, EPDM and blends thereof, and where the thermoplastic elastomer (TPE) in particular is based on poly urethane, polyamide, polystyrene, copolyester and polyolefin or blends thereof.

11. Spacer according to one of claims 1 to 10, wherein the first and / or the second plastic material is foamed at least in partial areas of the base body or the drying medium body.

12. Spacer according to one of claims 1 to 11, wherein the particulate desiccant is selected from silicates, sulfates, oxides, in particular in the form of zeolite, calcium sulfate, silica gel, layered silicate, framework silicate, phosphorus oxide, aluminum oxide, alkali oxide and / or alkaline earth oxide or Mixtures thereof, the desiccant particularly preferably comprising a zeolite 3A with an average pore size of approximately 3 angstroms.

13. Spacer according to one of claims 1 to 12, wherein the particulate desiccant in a proportion of about 10 wt .-% or more, preferably about 25 wt .-% to about 65 wt .-%, more preferably about .

40 wt .-% to about 65 wt .-%, in the second plastic material is embedded, each based on the total weight of the Trockenmit te Ikörpers.

14. Spacer according to one of claims 1 to 13, wherein the particulate desiccant is embedded in the form of granules and / or powder in the second plastic material, the granules being given a mean particle size Dso of about 2 mm or less, more preferably approx. 1 mm or less, and the powder preferably has a mean particle size D 50 of approx. 0.1 mm or less.

15. Spacer according to one of claims 1 to 14, wherein the spacer comprises a proportion of desiccant, such that a moisture absorption capacity of about 2 g of water per 100 g of spacer or more, more preferably from about 4 g to about 30 g per 100 g of spacer, is given.

16. Spacer according to one of claims 1 to 15, wherein the second plastic material is selected so that the moisture absorption capacity of the spacer when stored in a standard climate (50% ± 10% relative humidity at a temperature of 23 ° C ± 2 ° C) in a storage period of 48 hours by about 50% or less, preferably about 30% or less, more preferably about 20% or less.

17. Spacer according to one of claims 1 to 16, wherein the first plastic material has a specific thermal conductivity of approx.

0.6 W / (nrK) or less, in particular of approx. 0.4 W / (nrK) or less.

18. Spacer according to one of claims 1 to 17, wherein the drying center body has a plurality of spaced apart ribs running parallel to the longitudinal direction on the inner surface.

19. Spacer according to one of claims 1 to 18, wherein the Profilkör has on the inner surface a parallel to the side surfaces of the Pro filkörpers and these respectively spaced, continuous groove for receiving a glass edge of a further glass pane, optionally the profile body on the Inner surface has two parallel to the longitudinal direction of the profile body, spaced apart projections, between which the groove is ausgebil det.

20. Spacer according to claim 19, wherein the groove for receiving the glass pane edge of the further glass pane is formed on the base body.

21. Spacer according to claim 19, wherein the groove for receiving the edge of the glass pane of the further glass pane is formed on the drying agent body.

22. Spacer according to one of claims 1 to 21, wherein the drying center body has a width which essentially corresponds to the width of the base body.

23. Spacer according to one of claims 1 to 22, wherein the Profilkör comprises a cover element, which is arranged on the inside surface and forms one or more receiving chambers with the base body, in which the desiccant body can be arranged as a whole or in parts.

24. Spacer according to claim 23, wherein the cover element extends essentially from one side surface of the profile body to the other Be tenfläche and / or wherein the cover element has a groove which is spaced apart from the side surfaces parallel to the longitudinal direction of the profile body and which to Receiving a glass edge is formed.

25. Spacer according to one of claims 1 to 24, wherein the base body and the desiccant body are releasably connected to one another, the desiccant body being reversibly connectable to the base body by force and / or positive locking.

26. Spacer according to one of claims 1 to 25, wherein one or more functional elements are formed on the inner surface of the base body and / or on the side walls of the profile body, in particular in the form of grooves and latching projections.

27. The spacer according to claim 26, wherein the spacer has one or more components positively connected to the functional elements, the components being selected in particular from desiccant carriers, receiving elements for glass panes and decorative elements.

28. Spacer according to one of claims 1 to 27, wherein the outer surface of the profile body is essentially planar and optionally the inner surface is concave.

29. Spacer according to one of claims 1 to 28, wherein the plastic material of the profile body at least in some areas has a pore structure, the mean pore size is preferably about 5 pm to about 150 pm and the pore volume is preferably about 40 vol. % or less, preferably about 10% by volume to about 35% by volume, of the volume of the profile body.

30. Spacer according to one of claims 1 to 29, wherein the base body on an outer and / or inner surface and / or the side walls at regular intervals substantially perpendicular to the longitudinal direction of the profile body has recesses, in particular in the shape of a slot or wedge .

31. Spacer according to one of claims 1 to 30, wherein the spacer on the outer surface of the base body has a barrier layer with a barrier effect against gases and / or water vapor, wherein the barrier layer is preferably selected from a metal foil, in particular with a thickness of up to approx. 100 pm, more preferably with a thickness of approx. 10 pm to approx. 50 pm, preferably a rolled stainless steel foil or a rolled aluminum foil, a multilayer foil with a polymer-based carrier foil and at least one layer made of metal, metal oxide or Ceramic, a coating with platelet-shaped nanoparticles, especially in Form of layered silicate, a flexible glass layer, a diffusion-inhibiting polymer film and a polymer film laminate.

32. Spacer according to one of claims 1 to 30, wherein the spacer has a barrier layer with a barrier effect against gases and / or water vapor on the outer surface of the base body, the barrier layer being designed as a coating on the base body and preferably a layer of metal , Metal oxide or ceramic, platelet-shaped nanoparticles, in particular in the form of sheet silicate.

33. Spacer according to one of claims 1 to 32, wherein the base body and / or the desiccant body of the spacer is / are designed in such a way that he / she can be continuously joined to one another in the longitudinal direction without auxiliary material, in particular by means of a mold or Material connection, wherein the base body and / or the Trockenmit telkörper is / are preferably joined together in the longitudinal direction by means of hooking, clipping or welding.

34. Insulating glass pane with two outer glass panes held at a predetermined distance by a spacer frame, the spacer frame being manufactured using a spacer according to one of claims 1 to 33.

35. Insulating glass pane according to claim 33, wherein the two outer glass panes are glued to the spacer in the area of the side surfaces of the base body by means of a primary sealant, the primary sealant preferably being selected from synthetic rubber, polyisobutylene, butyl rubber, polyurethane, silicone polymer , Silane modified polymer, polysulfide and polyacrylate.

36. insulating glass pane according to claim 34 or 35, wherein a secondary sealant, in particular in the form of polysulfide, polyurethane, silicone polymer and hot melt based on butyl, adjacent to the two äuße Ren glass panes on the outer circumference of the insulating glass pane, if necessary wedge-shaped, is applied.

37. Insulating glass pane according to one of claims 34 to 36, wherein on egg ner surface of the insulating glass pane, which is formed by the outer surface of the base body, a secondary sealant is applied over the entire surface, wherein the sealant application extends in particular continuously from one glass pane to the other glass pane and lies tightly against the glass panes.

38. Insulating glass pane according to one of claims 34 to 37, wherein the profile body has a groove on the side of the inner surface, into which a third glass pane is inserted with its edge.