EP2262970A1

EP2262970A1 - Spacer having a drying agent for an insulated glass pane

Info

Publication number: EP2262970A1
Application number: EP09711684A
Authority: EP
Inventors: Karl Lenhardt
Original assignee: Plus Inventia AG
Current assignee: Plus Inventia AG
Priority date: 2008-02-19
Filing date: 2009-02-18
Publication date: 2010-12-22
Also published as: US8769889B2; US8530010B2; US20100330310A1; CA2715337A1; US20110296796A1; WO2009103511A1

Abstract

In order to configure an insulated glass pane, two individual glass panes (2, 3) are glued to each other by means of a frame-shaped spacer (4). For this purpose a sealant is provided in joints (15, 16) between two flanks (7, 8) of the spacer (4) and the two adjoining glass panes (2, 3). The joints (15, 16) on the interior of the insulated glass pane (1) are open and contain a mass (12), which has a surface facing the interior of the insulated glass pane (1) and in which a drying agent is embedded.

Description

0

DISTANCE HOLDER WITH DRYING AGENT FOR AN INSULATING GLASS PAN

: 0 The invention is based on an insulating glass pane with the features specified in the preamble of claim 1. Such an insulating glass pane is known from DE 202 16 560 U 1.

In known insulating glass panes, two individual panes of glass are glued together by a frame-shaped spacer. The spacers are usually made of metallic hollow sections, in particular of aluminum or steel, which have the individual glass panes facing side surfaces, which are referred to below as flanks. The spacers contain a desiccant, in particular zeolites (molecular sieves), which are intended to absorb moisture, which may be located in the insulating glass pane. For this purpose, the interior of the insulating glass facing wall of the spacer is perforated.

It is known to apply to the flanks of the frame-shaped spacer a primary, non-setting sealing compound, which is usually a pumice. is lyisobutylene, which is a thermoplastic butyl rubber. From DE 34 34 545 C1, it is known to place the spacer for coating with the primary sealing compound on a horizontal conveyor, to lean against a support wall and pass with his leg lying on the horizontal conveyor between two single-facing nozzles, with which both flanks of the spacer one strand of the primary sealant is applied. If one corner of the spacer passes between the nozzles, the feed is interrupted and the spacer is pivoted by 90 ° counter to its feed direction, whereby the next leg of the frame-shaped spacer comes to lie on the horizontal conveyor and is then coated next. This continues until the entire spacer is coated on its flanks. A spacer prepared in this way is then glued onto a first glass pane in a first assembly station, and in another assembly station a second glass pane is glued onto the still free flank of the spacer and the assembly thus formed is pressed in a surface press to a thickness predetermined for the insulating glass pane.

The primary sealant is primarily used to seal the insulating glass panel against the ingress of moisture and - if the insulating glass pane has been filled with a gas other than air - against the loss of air other than air. The primary sealant is also used in the art as an assembly aid by providing a temporary cohesion of the insulating glass pane, which is subsequently permanently secured by a secondary sealant.

In the insulating glass panes known from DE 28 16 437 A1, the secondary sealing compound is filled into an edge joint, which is bounded by the outside of the spacer and the two adjacent glass panes. The vast majority of the secondary sealant thus lies on the outside of the spacer between the two individual sheets of glass and only a minor portion thereof penetrates into the two gaps between the two flanks of the spacer and the glass sheets where it encounters the primary sealant. It is known to use as a secondary sealing compound, a curing plastic mass, which is a rigid bond between the two individual Produces glass panes. As such secondary sealing compounds Thiokole, polyurethanes and silicones are common in insulating glass panes.

In order to reduce the manufacturing cost of an insulating glass pane, it is known to use, instead of spacers formed from hollow profile bars, a solid thermoplastic spacer placed on the glass pane in situ by means of a nozzle moved along the edge of a single pane of glass extruded and then glued by applying a second glass sheet with this. The in situ extruded under the trademark TPS known spacer takes over the task of a primary sealant; it consists essentially of a thermoplastic polyisobutylene, in which a powdery desiccant is incorporated. In order to permanently secure the solid bond between the individual glass panes of the insulating glass pane, a secondary sealing compound is also required in this case, which is filled into the edge joint, which is present on the outside of the thermoplastic spacer and extends from one to the other glass pane.

The secondary sealing of an insulating glass pane is the most expensive part of the insulating glass production, because it requires significant amounts of costly thermosetting two-component plastic, and because its preparation, promotion and exact dosage are technically demanding and expensive. It should be added that you have to leave the entire edge of the insulating glass including their corners with a nozzle in each sealed insulating glass to fill the gap existing at the entire edge of the insulating glass gap and full (DE 28 16 437 A1). The amount of adhesive required for larger spacer widths also increases in proportion to the spacer width.

From DE 202 16 560 U1 an insulating glass pane is already known, in which the primary sealing compound and the secondary sealing compound is located in a space between the flanks of the spacer and the two glass panes; the primary sealant is in two thinner joints adjacent the interior of the insulating glass pane, whereas the secondary sealant is in two wider joints which connect to the thinner primary sealant joints and are open to the outside. The spacer is formed as usual from a metallic hollow profile, the interior of which serves to receive a desiccant, which binds moisture present in the insulating glass. For this purpose, the interior of the insulating glass facing wall of the profile, hereinafter referred to as its inside, perforated.

The hollow profile from which the known from DE 202 16 560 U1 spacers is formed, touched on its two flanks, the glass sheets each along two lines of contact, one of which separates the joint for the primary sealing compound from the joint for the secondary sealing compound and of where the second contact line closes the gap for the primary sealing compound toward the interior of the insulating glass pane.

The present invention has for its object to show a way how you can come to less expensive, especially suitable for mass production insulating glass without loss of quality.

This object is achieved by an insulating glass with the features specified in claim 1. Advantageous developments of the invention are specified in the subclaims.

In an insulating glass pane according to the invention located in the joint between the flanks of the spacer and the two glass panes a mass which has a the interior of the insulating glass pane facing surface and in which a desiccant is incorporated. So that the desiccant can absorb moisture from the interior of the insulating glass pane, the two joints are open to the interior of the insulating glass pane. Under the joints between the flanks of the spacer and the two glass panes, the gap between the flanks and the two glass panes is understood. The flanks of the spacer are understood to be the side walls or side surfaces thereof, which face the two individual glass panes in the insulating glass pane.

The invention has significant advantages: • The cavity of the spacer may be free of desiccant.

• The expense of filling the spacer with a desiccant can be saved.

• No device is required for filling the spacer with desiccant.

• The spacer does not have to be secured against the dripping out of desiccant.

• When bending the spacer, there is no need to worry about desiccant in the spacer. This simplifies the bending process and considerably reduces the risk of the spacer tearing when bending its corners.

• Since the flanks of the spacer must be coated with a sealant anyway before the spacer is installed in an insulating glass pane, the application of the compound containing a desiccant will not necessarily require a special operation. The application of the dry-agent-containing composition and a possibly required separate, setting, sealing compound can instead take place in a single operation.

• The effort for the production of spacers can be significantly reduced.

The invention is suitable both for metallic spacers, in particular for those which are formed from hollow profiled bars, as well as for spacers made of plastic, both for those made of solid plastic, in particular of foamed plastic, as well as for those made of plastic hollow sections.

• Spacers made from hollow section bars contain only air but no desiccant, which is why they hinder the heat transfer between two glass panes more than a spacer frame filled with a desiccant. The same applies to distance holder, which consist of foamed plastic and contain no desiccant.

Preferably, any sealing compound for connecting the spacer to the two adjacent glass panes is provided only in the two joints between the spacer and the two individual glass panes. The sealant does not form a bridge across the outside of the spacer from the one glass sheet to the other single glass sheet. The outer side of the spacer is understood to be the side of the spacer which points outward with respect to the insulating glass pane and connects the two flanks of the spacer.

This has other significant advantages:

Since no sealing compound is provided which bridges the outside of the spacer from one glass pane to the other glass pane, the insulating glass pane also does not require an edge joint which would have to be filled with sealing compound. The spacer therefore does not have to be offset inwardly from the edge of the glass sheets, but can be flush or approximately flush with the edge of the glass sheets. With the same external dimensions of the insulating glass pane and at the same height of the spacer profile, the result is that the clear internal dimension of the insulating glass pane increases. Under the clear internal dimension here the height and width of the exposed surface of the spacer surface of the insulating glass pane understood. Under the height of the profile of the spacer is the distance between the outside of the spacer and the interior of the insulating glass facing side (inside) of the spacer understood.

A larger light internal dimension of the insulating glass has the advantage of either slimmer window frames to allow because the edge of the insulating glass must not be bordered so deep, or to improve the thermal insulation, if the insulating glass is bordered at the edge as deep as insulating glass panes, whose spacer has a distance from the edge of the insulating glass pane to form an edge joint. A spacer made of a metallic hollow profile bar, which represents an undesirable cold bridge between the two glass panes, is better insulated from the warmer air space on one side of the insulating glass pane and the colder air space on the other side of the insulating glass pane, if it is deeper in the window frame than if he lies on the edge of the window frame. At the edge of the window frame, the heat only has to pass through the pane of glass in order to reach the spacer. However, if the spacer is lower in the window frame, then the heat must also overcome a heat flow-inhibiting distance in the glass parallel to the plane of the glass sheet to get to the spacer. Alternatively, it is possible to make the profile of the spacer to the depth of the saved edge joint higher, without reducing the clear inside dimension of the insulating glass pane. This, too, is an advantage because it makes it possible to achieve even better sealing of the insulating glass pane.

The mass, which contains the desiccant, has the task to bind the desiccant so that it does not get into the interior of the insulating glass pane. In addition, the mass should adhere to both the spacer and the glass panes. Suitable z. B. masses based on polyisobutylene, in which the desiccant can be stored in powder form. Such masses are state of the art for insulating glass production; they serve z. B. for the production of plastic spacers, in which a powdery desiccant, in particular molecular sieves, is incorporated. Such plastic spacers are known as TPS spacers and the insulating glass panes as TPS insulating glass panes. The well-known TPS spacer is extruded as a strand on one of the glass sheets and then joined together with the other glass to form an insulating glass pane, see EP 0 782 656 B1 and EP 08 23 531 B1 Compared with a TPS insulating glass pane, according to the invention a large part of the desiccant-containing mass saved, without that would be detrimental to the sealing of the insulating glass pane and for achieving a low dew point in the interior of the insulating glass pane. That is an advantage of the present invention.

The mass in which the desiccant is incorporated does not hermetically seal the desiccant. Instead, water vapor present in the interior of the insulating glass pane can very slowly diffuse into the mass containing the desiccant and is bound therein by the desiccant.

Not only does the desiccant-containing composition serve to entrap the desiccant, but it also performs a sealing task by being either a primary sealant that does not set or containing such a primary sealant. A mass based on polyisobutylene, such as the TPS material, is therefore well suited for purposes of the invention. It prevents in combination with the stored desiccant on the one hand, the diffusion of water vapor into the interior of the insulating glass and on the other hand binds moisture that is still in the assembly of the insulating glass ago whose interior is contained and causes a low dew point, which prevents fogging of the insulating glass pane from the inside under normal conditions of use. Surprisingly, it has been found that the desiccant-containing sealing compound results in a very good sealing of the insulating glass pane, although moisture can penetrate into the sealing compound and although the amount of desiccant present in the joint between the flanks of the spacer and the glass sheets in the sealing compound is substantially smaller as at distance holders made of hollow profile rods, which are filled with the desiccant, and much smaller than TPS spacers.

If the desiccant-containing mass is or contains a primary sealant, then in the edge joints of the insulating glass panel, a secondary sealant should be added to the desiccant-containing mass which sets to establish the necessary firm mechanical bond between the glass sheets and the spacer, which is then obtained remains when sunlight causes a high temperature in the secondary sealant. Suitable secondary sealants are the masses which are already known for this purpose in the manufacture of insulating glass, in particular thiols (polysulfides), polyurethane and bonding silicones.

But it is also possible to choose as mass, which contains the desiccant, a secondary sealant, which sets. Although such a secondary sealant is less diffusion-tight to water vapor than a primary sealant such. As a polyisobutylene, but the secondary sealing compound can store the desiccant and at the same time produce the necessary solid bond between the spacer and the glass sheets. The water vapor diffusion tightness, which is not so good, makes it easier for the steam present in the insulating glass pane to enter the desiccant, which binds the steam. In order to prevent the ingress of water vapor from the outside into the insulating glass pane, a mass containing the desiccant based on a setting secondary sealing compound is suitably supplemented by a non-setting primary sealing compound such. As a polyisobutylene, which permanently opposes the diffusion of water vapor high resistance. The primary sealant in this case should be in the joints between the flanks of the spacer and the glass panes, connect to the outside with the dry mass on the basis of a secondary sealant.

The secondary sealant which may be added to the desiccant-containing composition is preferably a one-component or two-component reactive adhesive, eg. As a reactive hot melt adhesive, which can be melted only once and then sets. This development of the invention is particularly favorable when the composition containing the desiccant is a primary sealant based on a polyisobutylene.

Also suitable for the purposes of the invention are compositions which combine a sufficient impermeability to the diffusion of water vapor with a sufficient mechanical strength even at elevated temperatures, as may occur in insulating glass panes. An insulating glass pane according to the invention can also be sealed alone with such a mass in which a desiccant is incorporated. For this purpose, only such a desiccant-containing composition is applied to the flanks of the spacer, which is then firmly, permanently and tightly connected to the glass sheets alone by this mass to an insulating glass pane.

If the spacer profile has a greater height than in the prior art, then this also applies to its flanks. If a sealing compound is applied to the flanks of such a spacer profile in such a quantity and arrangement that it covers the entire surface of the flanks in any case after the insulating glass pane has been pressed to its desired thickness in combination with a sealant containing desiccant, then the gap between the edges of the spacer and the adjacent glass sheets according to the invention a greater sealing depth than in the prior art, while saving a significant amount of costly sealant. Savings in sealant from 50% to 80% over the prior art are realistic. However, the saving of sealant does not lead to a deterioration of water vapor resistance and gas-tightness of the insulating glass, because as far as the spacer itself can be assumed to be water vapor-tight and gas-tight, which is true in any case for a metallic spacer, the water vapor tightness and gas tightness depends Insulating glass pane of the nature and tightness of the sealant in the gap between the spacer and the adjacent glass panes as well as the dimensions of the joint. Insofar as the sealant in the joint is free of pores, the tightness of the insulating glass depends only on the nature of the sealant and on the length, width and depth of the sealed joint between the spacer and the adjacent glass panes. The length of the joint is predetermined by the circumference of the insulating glass pane. The width of the joint between the flanks of the spacer and the two adjacent glass panes is small even in the prior art. For a recess of the joints according to the invention, in particular a margin exists, if - which is preferred - the frame-shaped spacer is designed so that its outer side is flush or approximately flush with the edges of the glass or - if the two glass panes of an insulating glass not equal are - flush or approximately flush with the edge of the smaller glass pane. If one does not prefer a larger clearance of the insulating glass pane, compared with the prior art, with substantially smaller amounts of sealing compound, an approximately double sealing depth and correspondingly a wider adhesive surface between the spacer and the glass panes is possible and therefore can be achieved expect higher level of tightness. The need for sealing compound remains the same regardless of the spacer width, ie the need for sealing compound does not depend on the width of the spacer.

In the prior art, the hollow spacers contain a desiccant and are provided on the side facing the interior of the insulating glass with small holes through which moisture from the interior of the insulating glass pane in the spacer, absorbed by the desiccant and bound, absorbed or adsorbed can. The production of the small holes in the spacer can be saved according to the invention. Preferably, both the interior of the insulating glass facing wall and the opposite, outwardly facing wall - the base of the spacer profile - are completely sealed, so that the spacer itself forms a double seal for the insulating glass pane. If the spacer profile is not made by extrusion, but by folding or roll forming from a metal strip, then the longitudinal edges of the metal strip should preferably combined on one of the two flanks of the spacer profile and z. B. by welding with a laser, so that an e- is sealed leaking weld from the applied to the edge sealant, in particular of a primary sealant. Preferably, none of the peripheral walls of the hollow profile bar, from which the spacer is formed, an opening. If the hollow profile rod is an extruded profile, then this already has no production opening in its peripheral walls. If it is a profile formed by roll forming from a sheet-metal strip, then it should preferably be ensured that the weld seam which connects the two longitudinal edges of the sheet-metal strip in the hollow-section bar is continuous tight. The production of hollow profile rods by extrusion is particularly suitable for hollow profile rods made of aluminum. The production by roll forming or roll forming from strip-shaped sheet metal is particularly suitable for hollow profile rods made of stainless steel.

By sealing compound in the joint between the spacer and the individual glass panes not only the tightness, but also a sufficiently strong composite of the insulating glass pane should be permanently secured. A sufficient compressive strength is already achieved by a sufficiently stable spacer, which may be formed from profiled bars of metal or plastic. A sufficient tensile and shear strength of the insulating glass pane is achieved even at higher temperatures by the use of a bonding sealing compound, which in conjunction with a non-setting sealing compound, such. As a polyisobutylene, can be used.

An inventively possible greater depth of the gap between the flanks of the spacer holder and the glass sheets favors it, unlike in the prior art to get along with only a single sealant and to achieve sufficient tightness with only one type of sealant. It should expediently be a sealant, which sets and hardens, but preserves a greater degree of permanent elasticity than do today in insulating glass conventional secondary sealants based on Thiokol or polyurethane. Examples of such a sealing compound, which are used as sole sealing compound in an insulating glass pane and in which a powdery desiccant can be stored, are disclosed in WO 2008/005214 A1, the content thereof is hereby incorporated by reference in order to include it in the present patent application.

The invention is not limited to working with only one type of sealing compound. Advantageous is the use of two sealants that complement each other in their properties meaningful: A primary sealant that absorbs the desiccant and at the same time as a polyisobutylene has a particular suitability for sealing, and a secondary sealant, which has a particular suitability for permanent solid bonding Glass sheets has, in particular a hardening plastic mass, such as a polyurethane or a Thiokol (polysulfide), a reactive polyisobutylene, a silicone or a hot-melt, in particular a reactive hot-melt.

Both the desiccant-containing primary sealant and the secondary sealant may be applied to the flanks of the spacer prior to assembling the insulating glass pane, with it being preferred to include the primary sealant in the vicinity of the inside of the spacer and the secondary sealant in the vicinity of the outside to apply the spacer. This may be done simultaneously, for example by coextrusion, or overlapping in time, but slightly offset, for example, first the primary sealant and then the secondary sealant, preferably in one and the same station, so that a separate sealing station or sealing machine, in which stand the technique, the secondary sealing compound applied to the spacer or introduced into the edge joint of an insulating glass pane (DE 28 16 437 A1), can be omitted. Since sealing machines are generally the most expensive machines in an insulating glass production line, this means enormous savings in terms of costs and considerably less space.

According to the invention, the primary sealing compound and the secondary sealing compound can already be applied to the flanks of the profiled bars before they are formed into a spacer frame. A device, as described in DE 34 34 545 C1 for moving and pivoting spacer frame when coating its flanks with a primary sealing compound, is not needed in the production of an insulating glass according to the invention and can be saved. That is another advantage of the invention.

The invention is not only suitable for insulating glass panes, in which two individual glass sheets are glued together by a frame-shaped spacer, but also for insulating glass, in which more than two glass sheets are glued together in pairs by a frame-shaped spacer, in particular for insulating glass panes, in which three individual glass sheets are glued together by two frame-shaped spacers.

Preferably, the spacer is arranged so that it is flush with the edges of the individual glass sheets. For graduated insulating glass panes, which are composed of a larger and a smaller glass pane, the spacer preferably terminates flush with the edge of the smaller glass pane. A flush closure allows the greatest sealing depth or the best thermal insulation and reduces both the risk of splintering from the edge of the insulating glass pane, as well as their contamination by possibly overflowing sealant. The spacer may even be arranged so that it projects beyond the edge of the individual glass panes and thereby forms itself the edge of the insulating glass pane. This additionally reduces the risk of chipping from the edge of the insulating glass pane, especially during transport and installation of the insulating glass pane in a window frame or in a facade.

Conventional spacer profiles have a profile height of 6 mm to 8 mm. Such profile heights are also suitable for purposes of the invention. If - as is preferred - the spacer is flush or approximately flush with the edge of the glass, the spacers can also have a profile height of 8 mm to 12 mm in an insulating glass pane according to the invention. Thus, despite a simultaneous omission of the edge joint provided in the prior art for a setting secondary sealing compound, greater sealing depths than in the prior art can be achieved.

However, spacers with a lower profile height of 7 mm to 9 mm are preferably used in an insulating glass pane according to the invention, preferably 7 mm up to 8 mm. It has been shown that such a low profile height is sufficient and has the advantage of a material savings.

The insulating glass pane according to the invention preferably has, in the joint between the flanks of the spacer and the adjoining panes of glass side by side, a primary non-setting sealing compound containing the desiccant and a secondary setting sealing compound. Conveniently, the primary sealing compound adjoins the interior of the insulating glass pane and the secondary sealing compound directly to the side facing away from the interior of the insulating glass side of the primary sealing compound and extends to the edge of the insulating glass pane. In this case, the primary sealing compound with the incorporated desiccant, which is preferably applied before the secondary sealing compound, constitutes an effective barrier for the secondary sealing compound. This advantage is also achieved if the primary and secondary sealing compounds are applied overlapping in time, the application of the primary sealing compound Sealant anticipates the application of the secondary sealant. This barrier can not be overcome by the second, secondary sealant when the insulating glass pane is being pressed. Thus, one for the tightness and cohesion of the insulating glass pane advantageously two-stage composite is achieved.

If a desiccant-containing primary sealant is applied to the flanks, the secondary sealant immediately adjoins it, with gaps to be avoided as far as possible. If only a single sealant is used which provides both the required seal and the permanent mechanical bond and contains the desiccant, then this should extend over the entire height of the flanks of the spacer. The large sealing depth which is possible according to the invention favors working with only one sealing compound, which is a reactive one-component sealant and adhesive based on a polyisobutylene or a hot-melt adhesive (hot-melt) or a compound disclosed in WO 2008/005214 A1 Sealant can act. By using such an adhesive and sealant as the sole sealant, further cost savings can be achieved in the production of insulating glass. Preferably, the spacer has a hollow profile, in particular a box profile. Although spacers formed from a hollow profile usually receive the desiccant in the prior art, this is not preferred in the context of the present invention, but the cavity of the spacer preferably contains no desiccant at all. The desiccant is located only in the joints between the spacer and the adjacent glass sheets.

Preferably, the inner space of the insulating glass facing the inside of the spacer is narrower than the interior of the insulating glass pane facing away from the interior

0 outside of the spacer. This is another departure from the prior art. So far, it has, as disclosed in DE 202 16 560 U1, the largest width of the spacer holder provided on its interior of the insulating glass facing the inside and made it narrower on its outer side to there more secondary sealing compound for the solid mechanical composite Insulating glass-

5 disc can accommodate. In development of the present invention, these ratios are just reversed: the spacer is preferably narrower on its inside facing the interior of the insulating glass inside than on its outer side, or narrower than at its widest point. This has the advantage that in that section of the joints, which adjoins the interior of the insulating glass pane,

: 0 more desiccant-containing mass and thus more desiccant can be accommodated than if the spacer adjacent to its inside would not be narrower than at its outer widest point. In addition, it has been found that a much smaller amount of the secondary sealing compound than previously used is sufficient to provide a reliable solid composite of the iso-sealant mass.

: 5 lierglasscheibe produce.

In particular, it is advantageous to design the spacer such that its flanks extend parallel to one another in a region adjoining the outside of the spacer up to a predetermined distance from the outside, and that the flanks in the region between this predetermined distance from the outside of the Spacer and the inside of the spacer approach each other. Where the two flanks are parallel to each other, the secondary sealing compound is provided in a relatively thin layer, which establishes the solid bond between the spacer and the glass sheets. On the subsequent ßenden region of the flanks, where the cross section of the spacer tapers, the desiccant-containing mass is provided.

The flanks can be stepped and in this way allow for the desiccant-containing mass a wider gap than for the secondary sealing compound. Another advantageous possibility is to make the flanks in the region between the predetermined distance and the inside of the spacer in a concave cross section. This makes it easier to fill the gaps between the spacer and the glass sheets gapless.

Particularly preferred is a development of the insulating glass pane according to the invention, in which both flanks of the spacer each have an intermediate region and two adjacent to the intermediate region and the intermediate region between them enclosing areas. The two intermediate areas are parallel to each other, have an equal distance from the outside of the base of the spacer holder profile and are the same height, wherein the spacer profile is narrower in the adjacent areas to the respective intermediate areas than in the intermediate area. The height of the intermediate region is understood to be the extent of the intermediate region perpendicular to the base of the spacer profile. Such a spacer has the greatest width where the intermediate regions of the spacer profile are arranged. In the adjacent areas, ie both towards the base and toward the inside of the spacer profile, this is narrower than at the level of the intermediate areas.

With this design of the spacer whose flanks perform a triple function: The intermediate areas parallel to the two glass panes, which are held by the spacer at a distance, are glued to the two glass sheets by means of a thin layer of sealing compound and determine essentially the distance between the two Glass panes of the insulating glass pane. In the two areas adjoining the respective intermediate region, there is in each case an intermediate space in the insulating glass pane between each of the flanks of the spacer and the respective glass pane opposite it, which is wider than the gap between the intermediate region and the glass pane adjacent thereto. The one space is open to the interior of the insulating glass and takes a dry medium-containing sealant on. The other space is open to the outside and, if two different sealing compounds are provided in the insulating glass pane, a desiccant-free sealing compound, in particular a setting secondary sealing compound. Is in the insulating glass only a single sealant provided, then it is a desiccant containing, setting sealing compound, eg. B. to one of the sealing compounds, which are disclosed in WO 2008/005214 A1.

The use of a spacer having narrower portions adjacent the intermediate region of its flanks has significant advantages: the intermediate region may be bonded to the glass sheets by a sealant which is needed only as a thin layer. The interstices adjacent thereto towards the interior of the insulating glass panel may receive a greater amount of dry matter, sufficient to keep the dew point in the insulating glass pane low enough, under normal ambient conditions and for an average lifetime of 25 to 30 years of fogging of the insulating glass is excluded from the inside. The wider outward open spaces between the spacer and the glass sheets can not only accommodate a sufficient amount of the secondary sealant but, in combination with the spaces that are open to the interior of the insulating glass panel, ensure that bends of the individual sheets of glass due to wind loads, thermal stresses and Fluctuations in the ambient pressure do not lead to hairline cracks in the sealing compounds, which could lead to leakage of the insulating glass pane. In such bending movements, the narrow intermediate regions of the flanks constitute a fixed point for the bending movement, which tears at the sealing compound in one or the other of the adjacent interspaces between the respective flank and the glass pane opposite thereto, but does not lead to cracking in the sealing compound there. because it is present in the adjacent to the intermediate region of the flanks interspaces in such a large thickness that the tensile strength of the sealant is not exceeded there.

The intermediate region on the respective flank of the spacer is expediently flat. The adjoining the respective intermediate region regions of the flanks may be formed with sharp edges, but are preferably concave in cross-section, preferably formed with a rounded contour, which favors a gapless filling of the spaces between the flanks of the spacer and the adjacent glass sheets with sealing compound.

In cross-section, the regions of the flanks adjoining the respective intermediate region of the flanks preferably have such a contour that the spacer profile tapers from the intermediate region towards the outside of the base of the spacer profile and towards the inside of the spacer profile, or initially tapers and becomes uniform tapered area merges, in which the flanks parallel to the intermediate areas. It should be remembered that the inner side of the spacer is understood to be the side of the spacer facing the interior of the insulating glass pane.

It is also possible to select the contour of the region adjoining the respective intermediate region of the flanks such that the spacer profile first tapers starting from the intermediate region and then widens again as it approaches the outside of the base and / or the inside of the spacer profile, so that an undercut is created on the flanks. However, such a design is not preferred, because it can complicate the sealing of the insulating glass pane.

Preferably, the spacer profile is mirror-symmetrical to the longitudinal center plane of the spacer, which runs parallel to the intermediate regions. With regard to another longitudinal center plane, namely with respect to that longitudinal center plane which runs parallel to the outside and to the inside of the spacer profile, the spacer profile could likewise be mirror-symmetrical. This is not preferred. It is preferred that the spaces between the glass sheets and the regions of the flanks adjacent to the inside of the spacer profile differ in size from the spaces between the glass sheets and the areas adjacent to the underside of the spacer profile. This makes it possible to use one and the same spacer profile with different objectives: if, above all, a large volume of desiccant Preceding mass is set, then you use the spacer profile in the spacer so that the larger spaces between the glass panes and the flanks facing the interior of the insulating glass pane. However, if more value is placed on a larger volume of secondary sealant, then the spacer profile is used so that the larger spaces between the glass sheets and the flanks of the spacer are facing outward.

It has already been mentioned that the profile bars, from which frame-shaped spacers are formed, are preferably already coated with sealing compound, as long as they have not yet bent into a frame-shaped spacer, but are still rectilinear. In order to facilitate the bending process, the profile bars at least on its inner side, ie on that side, which later faces the interior of the insulating glass pane in the insulating glass pane, have grooves or corrugations extending at right angles to the intermediate regions of the flanks. Preferably, such grooves or waves are also provided on the outside of the base of the profile bars. Each individual groove defines a possible predetermined bending point and, when bent, makes it easier to stretch the profile base. Preferably, the grooves or corrugations end at a distance in front of the flanks to avoid undesirable, outward deflections of the flanks during bending.

If the mutually parallel portions of the flanks extend to the outside of the base of the spacer profile and the spacer profile is narrower adjacent only to its inner side than on its outer side, then it is preferred that in the gap between the glass panes and the sections parallel to them the flan - ken the sealant is present in a thickness of 0.75 mm to 1, 25 mm, in particular in a thickness of about 1 mm. This is sufficient to prevent the occurrence of fine cracks in the sealing compound when exposed to changing wind loads, changing temperatures and changing external air pressures. However, when using spacer profiles narrower on both sides of an intermediate region of the two flanks parallel to the adjacent glass sheet than measured over the intermediate regions, the formation of cracks in the sealing compound as a result of changing pressure, temperature and wind loads can already be achieved with a much thinner layer of sealant in the gap between the intermediate regions of the flanks and the adjacent glass sheets be prevented, namely with a thickness of the sealant of only 0.25 mm to 0.45 mm, preferably only 0.3 mm to 0.4 mm. In order to produce such a thin layer of the sealing compound, one need not compress the insulating glass pane controlled to a predetermined thickness, but it is sufficient, with a specified specific pressure of z. B. 40 Newton per running centimeter of the circumference of the spacer holder to act on the insulating glass.

Embodiments of the invention are illustrated in the accompanying drawings. Like or corresponding parts are identified in the various examples with corresponding reference numerals.

FIG. 1 shows a cross section through part of an insulating glass pane according to the invention,

FIG. 2 is a cross-section through a modification of the insulating glass pane shown in FIG

FIG. 3 is an oblique view of a portion of the insulating glass pane shown in FIG. 1;

FIG. 4 shows the coated spacer of FIG. 3 after the compression of the insulating glass pane, but the glass panes in the drawing, in contrast to FIG. 3, are omitted.

FIG. 5 is a cross-section through the insulating glass pane shown in FIG. 1 with an adapter for attaching a rung;

Figure 6 shows an alternative adapter mounting on the spacer,

FIG. 7 shows, in cross section, a spacer profile modified with respect to FIGS. 1 to 5, the flanks of which are coated with a primary and a secondary sealing compound, on the left side of the figure before being pressed with a glass pane and on the right side the pressing with a glass pane, FIG. 8 shows a cross section through a part of an insulating glass pane assembled from three glass panes and two spacers in a representation corresponding to FIG. 1,

FIG. 9 shows, in an oblique view, a spacer profile with a seam which lies on a flank,

FIG. 10 shows a cross section through one half of a spacer with a modified profile shape next to a glass pane, before the insulating glass pane is pressed,

FIG. 11 shows a cross section through a part of a pressed-out insulating glass pane with a spacer with the profile shape from FIG. 10,

FIG. 12 shows a detail of the insulating glass pane according to FIG. 11 in an oblique view,

FIG. 13 shows the spacer of the pressed-out insulating glass pane according to FIG. 12 in an oblique view as in FIG. 12, wherein the glass panes are not shown,

FIG. 14 schematically shows, in a cross section through part of an insulating glass pane as in FIG. 11, how the insulating glass pane behaves with changing bends of its glass panes,

FIG. 15 shows a cross-section through a spacer of the type illustrated in FIGS. 10 to 14, in which, however, the base of the spacer profile and its opposite upper side of the spacer profile are additionally provided with grooves;

Figure 16 shows a portion of the spacer of Figure 15 in a plan view, the FIGS. 17 to 21 show, in illustrations which correspond to FIGS. 10 to 14, an insulating glass pane with a spacer profile which has been modified with respect to FIGS

FIG. 22 shows a cross-section through a part of an insulating glass pane with a spacer profile as in FIGS. 10 to 14, but conversely installed in reverse, and FIGS

FIG. 23 shows a cross-section through part of an insulating glass pane with an abutment profile as in FIGS. 17 to 21, but conversely installed in reverse.

Figure 1 shows a section of an insulating glass pane 1, consisting of two individual glass sheets 2 and 3, between which a frame-shaped spacer. 4

5 is formed, which is formed from a hollow profile bar, which has a box profile in cross-section and z. B. can be made by extrusion. The production by extrusion is particularly suitable for hollow profile rods made of aluminum. Hollow section bars made of stainless steel - the material with the German material number 1.4372 is particularly suitable - are better produced by roll forming from sheet steel.

! 0. Roll forming is also referred to as roll forming or roll forming. The spacer 4 has in cross section a base 5, which has a flat outer side 6. From the base 5 go two mirror-inverted legs 7 and 8, which lead to a base 5 parallel to the wall 9, the top 10 facing the interior of the insulating glass pane. The wall 9 is therefore here as the inside of the

! 5 spacer 4 is called.

The legs 7 and 8 form the flanks of the spacer 4. They then have two mutually parallel sections 7a and 8a, which extend up to a predetermined distance A from the base 5 to the base 5. This is followed in each case by a section 7b or 8b concave in the iθ cross-section.

In the region of the parallel wall sections 7a and 8a, a secondary sealing compound 11 is preferably applied to the flanks 7 and 8, which connects the spacer 4 firmly with the two glass panes 2 and 3 and hardens, z. For example, a component or two component reactive adhesive. On the parallel wall sections 7b and 8b, a mass 12 is preferably applied with a desiccant embedded therein. In this composition it, B. The portions may be a primary Versiege- ^"lung mass on the basis of a polyisobutylene act in which a molecular sieves powder is incorporated as a drying agent, e.g., a TPS mass. 7a and 7b and 8a and 8b of Flanks 7 and 8 of the spacer 4 can be coated in a joint operation, and preferably, as long as the rod-shaped spacer holder profile is still in a stretched position, that is rectilinear, and preferably with two nozzles, which are arranged offset from each other, to the Both flanks 7, 8 are coated together with the desiccant-containing composition and with secondary sealing compound, whereby the two nozzles are moved together, but in succession, along the flanks 7, 8. After the spacer profile bar has been coated, it can become a polygonal one, in particular one rectangular, frame-shaped spacers are formed, in particular by the fact that the profile bar to the v. For the corners folded seats is folded. This can be done by machine, but also easily by hand, the folding is particularly simple, because the base 5 and the inner side 10 of the spacer profile are free of any coating with an adhesive mass so that they can be easily grasped.

The desiccant-containing compound 12 and all other sealing compound 11 is located exclusively in the two joints 15 and 16 between the flank 7 and the glass pane 2 and between the flank 8 and the glass 3. The joints 15 and 16 consist of a gap 24, which on which is bounded on one side by the glass sheets 2 and 3 and on the other side by the wall 7a of the flank 7 parallel to the glass pane 2 or by the wall 8a of the flank 8 parallel to the glass pane 3, and by a space 25 which is interposed between the flanges Glass sheets 2 and 3 on the one side and the concave portions 7a and 8a of the flanks 7 and 8, respectively, and extends from the gap 24 to the top 10 of the spacer 4, which faces the interior of the insulating glass pane 1.

The interior 13 of the spacer holder 4 is empty, it contains no desiccant. All its walls 5, 7, 8 and 9 are sealed, they are impermeable to water vapor and gases, especially heavy gases, which may be provided instead of air in the insulating glass pane. In order to form a frame-shaped spacer 4 from the originally straight hollow profile bar, which generally has a rectangular outline, the hollow profile bar is preferably first at the locations at which a corner of the frame-shaped spacer holder is to be formed on the flanks 7 and 8 and the top 10, which is the inside of the spacer, notched. As a result, it is achieved that the flanks do not bulge outward when the corners are bent, but fall in, and that the upper side 10 of the hollow profile bar folds inwardly in a predetermined manner when a corner is bent. The notches of the flanks 7 and 8 and the top 10 are made such that the hollow profile bar ruptures neither the notches nor the later bending. The notching is performed before coating the flanks 7 and 8 with desiccant-containing mass 12 and with secondary sealing compound 11. The notches on the flanks 7 and 8 are then covered by the desiccant 12 mass 12 and by the secondary sealant 11, as can be seen in FIG. Despite an incidence of the flanks 7 and 8 in the region of the corners a complete seal of the insulating glass pane 1 is achieved in this critical area, because by bending or folding of the hollow profile bar to form the corner on the flanks 7 and 8 in the region of the corner, an excess of Mass 12 is accumulated with stored desiccant and secondary sealing compound 11, which distributes itself when pressing the insulating glass pane, thereby ensuring a tight corner. The fold 27, which is formed when folding or bending a corner on the inner side 10 of the spacer 4, is clearly visible in FIG. As a result of the previous notching process, it has a repeatable, pleasing appearance.

The embodiment shown in Figure 2 differs from the embodiment shown in Figure 1 in that the spacer profile on the flanks 7, 8 has no convex portions 7b and 8b, but instead is formed step-shaped.

The exemplary embodiment illustrated in FIG. 5 differs from the exemplary embodiment shown in FIG. 1 in that A-adapters 14 are anchored on the upper side 10 of the profile bar, onto which rungs 21 can be inserted, as shown in FIG. The adapters 14 can be inserted at the designated locations through a hole in the wall 10, which forms the top of the profile bar. The hole is preferably drilled at the designated location as long as the Corners of the frame-shaped spacer 4 are not yet formed, ie, as long as the hollow profile bar is not bent to form corners, best before the desiccant-containing composition 12 and the other sealant 11 are applied to the flanks 7 and 8 of the hollow profile bar. A gap between the edge of the hole in the wall 9 and the adapter 14 may optionally be sealed by a sealant.

Alternatively, the adapter 14 for a rung 21 can also be glued to the top 10 of the hollow profile bar. This is shown in FIG. 6 and has the advantage that the hollow profile bar is not damaged there. The attachment of the adapter 14 on the top 10 of the hollow profile bar by gluing is preferred.

FIG. 7 shows that a primary sealant 12 containing a desiccant and a secondary sealant 11 which sets, are preferably applied to the flanks 7 and 8 of the spacer so as to immediately connect to each other from the front, and that the flow the thickness of the layer that is applied, is selected over the height of the spacer profile so that the sealing compounds 11 and 12 there are furthest from the respective edge 7 and 8, where the two sealing compounds 11 and 12 meet. From there, the width of the coated spacer profile tapers both in the upward direction, ie towards the top 10 of the wall 9, as well as downwards, ie towards the outside 6 of the base 5 of the spacer profile, as in the left half the figure 7 is shown. This has the advantage that in the subsequent compression of the sealing compounds 11 and 12 between the spacer 4 and the two glass panes 2 and 3, the risk that between the sealing compounds 11 and 12 on one side and the glass pane 2 and 3 on the other Side bubbles are minimal. The compression begins namely at the first striking the glass pane 2 or 3 point 18, at which the two sealing compounds 11 and 12 adjoin one another, and proceeds from there upwards and down, so that the air from the first wedge-shaped columns between the sealing compounds 11 and 12 can be displaced on the one side and the glass sheets 2 and 3 on the other side. After completion of the pressing process, the image shown in the right side of Figure 7. Figure 8 shows the application of the invention to the production of a triple insulating glass, which consists of three glass sheets 2, 3 and 19, which are held in pairs by a respective spacer 4 at a distance from each other. In both cases, the sealing compounds 11 and 12 are located exclusively in the intermediate space between the flanks 7 and 8 of the spacer 4 and the respectively adjacent glass pane 2, 3 and 19.

Figure 9 shows a portion of a hollow profile rod, from which a spacer can be formed, in an oblique view. The hollow profile bar has a profile which is similar to the profile shown in FIG. He could also have a profile, as shown in Figure 1 or Figure 2. The hollow profile bar is formed by roll forming from a metal strip. The two edges of the metal strip meet at an edge 8 of the hollow profile bar and form there a longitudinal seam 17, the cohesion is secured by welding the two edges with a laser. Such a longitudinal seam 17 is not necessarily tight or may leak. It is therefore preferred to place it on a flank 8 of the hollow profile bar on which it is covered by a sealing compound. In Figure 9, the two edges of the metal strip overlap each other at the longitudinal seam 17. However, the two edges of the metal strip need not overlap each other at the longitudinal seam 17, but can also butt together and be welded together, as shown in another profile shape in Figure 15 is.

In all previous embodiments, it is preferred that the sealing compound 11, which is in the gap 24 between the glass panes 2 and 3 parallel walls 7 a and 8 a of the spacer 4, in the finished insulating glass pane 1 has a thickness of 0.75 mm 1, 25 mm, preferably about 1 mm. For clarification, it should be noted that in the example according to FIG. 2 it does not apply to the mass 12 which is located on the shoulder 20 between the sections 7a and 8a of the flanks 7 and 8 and the upper side 10 of the spacer 4, but only for the seal - Lung mass 11, which is located in the narrower gap 24, which starts at the base 5 of the spacer profile and ends at the shoulder 20, where it merges into the intermediate space 25. This is a difference from the prior art. In the prior art, it is customary to press insulating glass panes so that the gap 24 between the flanks of the spacer and the opposite glass panes is reduced to about 0.3 mm. For this purpose, the insulating glass panes are acted upon at the level of the spacer 4 with a pressure of typically 40 Newton per cm moving the circumference of the insulating glass pane. The preferred in the spacer profiles according to Figures 1 to 9 greater thickness of the sealing compound in the gap 24 between the flanks 7 and 8 and the glass sheets 2 and 3 is achieved in that the insulating glass pane 1 is pressed to a predetermined thickness, but not only with a given pressing pressure is pressed. For this purpose, the distance of the press plates, between which the insulating glass pane is pressed to the desired thickness, closely controlled, so that the above-mentioned layer thickness of the sealing compound 11 is actually achieved.

Pressing the insulating glass pane according to the invention with a predetermined pressure of z. B. 40 Newton per running centimeter of the circumference of the distance holder or - if the circumference of the insulating glass pane coincides with the circumference of the spacer - per running centimeter of the circumference of the insulating glass pane, but is also possible; For this case, a spacer profile is preferably used, an example of which is shown in FIGS. 10 to 14. In this example, the walls 7a and 8a parallel to the glass sheets 2 and 3 are narrower than in the previous examples and between the outside 6 of the base 5 of the spacer 4 and its walls 7a and 8a parallel to the glass sheets 2 and 3 is another one concave portion 7c and 8c provided by which see between the spacer 4 and the glass sheets 2 and 3 in the insulating glass pane 1, two further intermediate spaces 26 which extend from the respective gap 24 to the outside 6 of the base 5 and sealant , preferably a setting secondary sealant 11, receive.

On the one hand, the glass sheets 2 and 3 allow bending under wind load and under heat due to variations in external air pressure without causing fine cracks in the secondary sealing compound 11 and in particular in the primary sealing compound 12 that could lead to a leak. On the other hand, such Spacer profile, if the gaps 25 have a size other than the spaces 26, processed as a spacer and installed in an insulating glass so that the larger gap 26 is on the outside (see Figure 11), if in the joints 15 and 16 more secondary sealant 11 is desired as a mass 12 with embedded desiccant, or inside (see Figure 12), if in the joints 15 and 16 more mass 12 is desired with embedded desiccant as a secondary sealant 11.

FIG. 14 shows how an insulating glass pane behaves with such a spacer 4 when the glass panes 2 and 3 of the insulating glass pane 1 are subjected to bending. With thick lines, the glass sheets 2 and 3 are shown in a state in which they are not subjected to bending. The same glass panes are shown with thin lines if they are bent in one direction or the other. With respect to the spacer 4, they behave in a bending stress as if at the level of the flat intermediate portions 7a and 8a of the flanks 7 and 8 a virtual hinge or a virtual pivot axis 28 and 29 would be located, which in the longitudinal direction Flank 7 or 8 extends. In the vicinity of the virtual pivot axis 28, 29, the extent of movement of the glass sheets 2, 3 is the lowest, so that even with the thin layer of sealant 11 in the gap 24, the movement of the glass sheets 2 and 3 does not lead to cracking of the sealant 11. At a greater distance from the virtual pivot axis 28, 29, at the level of the inner side 10 of the spacer and at the level of the base 5 of the spacer, the extent of the movements of the glass sheets 2 and 3, although larger, but distribute the forces there at the Sealant mass 11 and drag on the mass 12 with embedded desiccant, over a much larger width of the joints 15 and 16, so that there is no formation of cracks in the mass 12 with embedded desiccant or in the sealant 11 there.

In the example of Figures 10 to 14 adjacent to the base 5 spaces 26 are greater than the inside of the spacer 10 4 adjacent spacers 25th Thus, the spacer profile in the embodiment of Figures 10 to 14 with respect to a longitudinal center plane through the hollow profile bar, which in the right Angle to the flat intermediate regions 7a and 8a of the flanks is asymmetrical. The However, hollow profile bars are mirror-symmetrical with respect to the other longitudinal center plane 30, which runs parallel to the flat intermediate regions 7a and 8a of the flanks.

In FIG. 22, it is shown that hollow profile bars with the profile shape shown in FIGS. 10 to 14 can also be shaped in the opposite direction to a spacer 4 and installed in an insulating glass pane, ie. h., That the wall, which forms the base 5 in Figures 10 to 14, forms the inside of the spacer 4 in Figure 22, while the wall, which in Figures 10 to 14, the inside 10 of the Ab-

0 stands, has become in Figure 22 to the base.

FIGS. 15 and 16 show a further development of the spacer 4 shown in FIGS. 10 to 14. The modification consists in that both the base 5 and the inner wall 10 are continuously provided with grooves 22 and 23, respectively, which are located in the

5 right angles to the flat intermediate regions 7a and 8a of the flanks extend, keep a distance from the flanks and are all the same design and are mutually equidistant. These grooves 22 and 23 can be formed by embossing. They facilitate the bending or folding of corners of the spacer. Because of this advantage, it is preferable to provide the grooves 22 and 23. They are suitable for everyone

.0 embodiments of the present invention.

The embodiment shown in Figures 17 to 21 differs from the embodiment shown in Figures 10 to 14 only in the form of the spaces 26 adjacent to the base 5 of the spacer 4. While

5, in the example of FIGS. 10 to 14, continuously increase the gaps 26 starting from the flat intermediate regions 7a and 8a as far as the base 5, they increase in the embodiment of FIGS. 17 to 21 starting from the base 5 up to the flat intermediate region 7a and 8a continuous, whereby viewed from the base 5 from an undercut is created, which ends at a wall 5 parallel to the base wall 31,

> 0 which the flat intermediate region 7a and 8a in the outward direction, ie in the direction of the base 5, limited. With respect to bending movements of the glass sheets 2 and 3, the insulating glass sheet shown in Figs. 17 to 21 behaves similarly to the insulating glass sheet shown in Figs.

FIG. 23 shows that the profile shape used in the exemplary embodiment of FIGS. 17 to 21 can also be processed inversely to form a frame-shaped spacer and inserted into an insulating glass pane.

LIST OF REFERENCE NUMBERS:

1. insulating glass pane

2. Glass pane

3. Glass pane

4. Spacer

5. Base

6. outside of 5

7. flank, thighs

7a. to the glass pane 2 parallel wall of 7, intermediate area

7b. concave section, adjacent area

7c. further concave section, adjacent area

8. flank, thigh

8a. to the glass 3 parallel wall of 8, intermediate area

8b. concave section, adjacent area

8c. further concave section, adjacent area

9. to the base 5 parallel wall

10. Top of 9, inside of the spacer

11. secondary sealant

12. Mass with stored desiccant

13. Interior of 4

14. Adapter

15. Fugue

16. Fugue

17th longitudinal seam

18th position

19. Glass pane

20. Shoulder

21st rung

22. grooves or waves in 9

23. grooves or waves in 5

24. gap (part of the joint 15, 16)

25. Intermediate spaces

26. more spaces 27th fold

28. Virtual swivel axis

29. Virtual swivel axis

30th longitudinal median plane

31. Wall

Claims

Claims:

1. Insulating glass pane in which two individual glass panes (2, 3) are glued together by a frame-shaped spacer (4), for which sealing compound in joints (15, 16) between two flanks (7, 8) of the spacer (4 ) and the two adjacent glass panes (2, 3), characterized in that the joints (15, 16) to the interior of the insulating glass pane (1) are open and a mass (12) containing a the interior of the insulating glass pane (1 ) facing surface and in which a desiccant is incorporated.

2. Insulating glass pane according to claim 1, characterized in that any sealing compound is provided only in the joints (15, 16).

3. Insulating glass pane according to claim 1 or 2, characterized in that the desiccant-containing mass (12) is a sealing compound.

Insulating glass pane according to claim 3, characterized in that the mass (12) containing the desiccant is or contains a primary sealing compound which does not set.

Insulating glass pane according to claim 3, characterized in that the mass (12) containing the desiccant is or contains a secondary sealing compound which sets

6. insulating glass pane according to claim 3, characterized in that the joints (15, 16) in one of the desiccant-containing mass (12) adjacent section (7b, 8b) outwardly adjoining region (7a, 8a) a different sealing compound ( 11).

Insulating glass pane according to claim 6, characterized in that the sealant (11) adjoining the mass (12) containing the desiccant is a one-component reactive adhesive or a two-component reactive adhesive.

8. Insulating glass pane according to claim 3, characterized in that only a single sealing compound is provided.

9. Insulating glass pane according to claim 8, characterized in that the sealing compound provided as the only one is a hardening one-component adhesive.

10. Insulating glass pane according to claim 8, characterized in that the sole provided sealing compound is a hot-melt adhesive, in particular a reactive hot-melt adhesive.

11. Insulating glass pane according to one of the preceding claims, characterized in that the spacer (4) is arranged so that it is flush with the edges of the individual glass panes (2, 3).

12. Insulating glass pane according to one of the preceding claims, characterized in that the profile height of the spacer (4) is 7 mm to 15 mm, in particular 8 mm to 15 mm.

13. Insulating glass pane according to one of the preceding claims, characterized in that the profile height of the spacer holder (4) is 7 mm to 9 mm, in particular 7 mm to 8 mm.

14. Insulating glass pane according to one of claims 6 to 13, characterized in that the sealing masses (11, 12) taken together extend over the entire height of the flanks (7, 8) of the spacer (4).

15. Insulating glass pane according to one of the preceding claims, characterized in that the spacer (4) has a hollow profile, in particular a box section.

16. Insulating glass pane according to claim 15, characterized in that the cavity (13) of the spacer (4) contains no desiccant.

17. Insulating glass pane according to one of the preceding claims, characterized in that the inside of the insulating glass pane (1) facing inside (10) of the spacer (4) is narrower than the outside facing away from him (6) of the spacer (4).

18. Insulating glass pane according to claim 17, characterized in that the flanks (7, 8) of the spacer (4) in a to the outside (6) of the spacer (4) adjacent region (7a, 8a) up to a predetermined distance (A ) run parallel to one another from the outer side (6) and that the flanks (7, 8) in the region (7b, 8b) between the predetermined distance (A) and the inner side (10) of

Distance holder (4) approach each other.

19. Insulating glass pane according to claim 18, characterized in that the flanks (7, 8) are step-shaped (Fig. 3).

20. Insulating glass pane according to claim 18, characterized in that the flanks (7, 8) in the region (7b, 8b) between the predetermined distance (A) and the inside (10) of the spacer (4) are concave in cross section.

21. Insulating glass pane according to one of claims 1 to 16, characterized in that both flanks (7, 8) of the spacer (4) each have an intermediate region (7a, 8a) and two adjacent to the intermediate region (7a, 8a) regions (7b , 8b; 7c, 8c) have the two intermediate regions (7a, 8a) parallel to each other, equidistant from the outside (6) of the base (5) and are of the same height, and that the spacer profile fits into the respective ones Intermediate region (7a, 8a) adjacent areas (7b, 8b, 7c, 8c) is narrower than in the intermediate region (7a, 8a).

22. Insulating glass pane according to claim 21, characterized in that the intermediate regions (7a, 8a) on the respective flank (7, 8) of the spacer (4) are flat.

23. Insulating glass pane according to claim 21 or 22, characterized in that at the respective intermediate region (7a, 8a) adjacent regions (7b, 8b; 7c, 8c) are formed concave in cross section.

24. Insulating glass pane according to one of claims 21 to 23, characterized in that the regions (7b, 8b; 7c, 8c) adjoining the respective intermediate region (7a, 8a) extend from the intermediate region (7a, 8a) to the outside (5). tapering towards the base (6) towards the inside (10) of the spacer (4) or initially tapering and then running parallel to the intermediate regions (7b, 8b; 7c, 8c).

25. Insulating glass pane according to one of claims 21 to 24, characterized in that the spacer profile is mirror-symmetrical to that longitudinal median plane of the spacer (4) which runs parallel to the intermediate regions (7a, 8a).

26. Insulating glass pane according to one of claims 21 to 25, characterized in that the intermediate spaces (25) between the glass panes (2, 3) and the areas (7b, 8b) of the flanks (7b, 8b) adjoining the inner side (10) of the spacer profile (7, 8) differ in size from the intermediate spaces (26) between the glass panes (2, 3) and the areas (7c, 8c) adjoining the underside (6) of the spacer profile.

27. Insulating glass pane according to one of the preceding claims, characterized in that the spacer (4) at least on its inner side (10), preferably also on the outer side (6) of its base (5), at right angles to the intermediate regions (7a, 8a ) has running grooves (22, 23) or waves.

28. insulating glass pane according to claim 27, characterized in that the grooves (22, 23) or waves at a distance in front of the flanks (7, 8) end

29. Insulating glass pane according to one of the preceding claims in conjunction with claim 16, characterized in that the spacer (4) has neither in its base (5) nor in its the interior of the insulating glass pane (1) facing wall (9) has an opening.

30. Insulating glass pane according to claim 29, characterized in that a longitudinal seam (17) of the hollow profile bar, from which the spacer (4) is formed, on a flank (7, 8) of the spacer (4).

31. Insulating glass pane according to claim 30, characterized in that the longitudinal seam (17) is covered by a sealing compound (11, 12), in particular by a primary sealing compound.

32. Insulating glass pane according to claim 29, characterized in that none of the peripheral walls (5, 7, 8, 9) of the hollow profile bar, from which the spacer (4) is formed, has an opening.

33. Insulating glass pane according to claim 32, characterized in that the spacer (4) is formed from a hollow profile bar produced by extrusion.

34. Insulating glass pane according to claim 32, characterized in that the spacer (4) is formed from a hollow profile bar produced by roll forming a strip-shaped sheet, wherein the longitudinal edges of the band-shaped sheet lie on a flank (7, 8) of the hollow profile bar and each other - preferably continuously - are welded.

35. Insulating glass pane according to one of the preceding claims, characterized in that the sealing compound present on the flanks (7, 8) of the spacer (4) in a region adjoining the base (5) of the spacer profile, in which the flanks (7, 8 ) parallel to the glass sheets (2, 3), have a thickness of 0.75 mm to 1, 25 mm, in particular about 1 mm.

36. Insulating glass pane according to one of claims 1 to 34, in particular in conjunction with claim 21, characterized in that on the intermediate regions (7a, 8a) of the flanks (7, 8) of the spacer (4) existing sealing compound has a thickness of 0, 25 mm to 0.45 mm, preferably from 0.3 mm to 0.4 mm.