EP1714000A1

EP1714000A1 - Insulating glass pane and method for the production thereof

Info

Publication number: EP1714000A1
Application number: EP05707151A
Authority: EP
Inventors: Karl Lenhardt
Original assignee: Plus Inventia AG; Lenhardt Karl
Current assignee: Plus Inventia AG
Priority date: 2004-02-03
Filing date: 2005-02-03
Publication date: 2006-10-25
Also published as: CA2555971A1; US20070175120A1; WO2005075782A1

Abstract

The invention relates to an insulating glass pane, in which two separate glass panes (2, 3) are held at a distance from one another by a spacer (4), which consists of a strip and which has an inner side (12), and outer side (6) and two flanks (11). A drying agent is provided in conjunction with the spacer (4), and a gap is provided on both sides of the spacer (4) between the spacer and both glass panes (2, 3). This gap is sealed by a primary sealing compound (19) that adheres to the spacer (4) and to the glass panes (2, 3). The invention provides that a compound (18), which contains a drying agent, is applied to the primary sealing compound (19) that seals both gaps and, afterwards, to the side (12) of the spacer (4) (also referred to as inner side (12) hereafter), this side facing the inner space (17) of the insulating glass pane. Compound (18) is applied so that it covers the inner side (12), that is, as long as the inner side is not already covered by the primary sealing compound (19).

Description

Insulating glass pane and process for its manufacture

The invention relates to an insulating glass pane with the features specified in the preamble of claim 1. Such an insulating glass pane is known, for example, from US Pat. No. 5,439,716 A. In the known insulating glass pane, two individual glass panes are kept at a distance by a thin-walled spacer, which is formed from a hollow profile rod made of metal, which has an inside, an outside and two flanks. There is a granular desiccant in the cavity of the spacer, which is packed so tightly at the corners of the spacer that it can transfer pressure from one flank to the other flank. The desiccant has the task of absorbing and binding moisture which is present in the interior of the insulating glass pane, so that the interior of the insulating glass pane does not fall below the dew point when it cools down. For this purpose, the inside of the spacer is perforated, so that the moisture from the interior of the insulating glass pane reaches the cavity of the spacer and can be absorbed there. In order to prevent moisture from penetrating into the interior of the insulating glass pane from the outside, a gap is provided between the flanks of the spacer and the two glass panes, which is sealed by a primary sealing compound which adheres to the spacer and to the glass panes. A polyisobutylene (butyl rubber) is primarily used as the primary sealing compound, with which a sufficient seal against the diffusion of water vapor can be achieved. Polyisobutylenes are thermoplastic, adhesive substances. In addition to their task of sealing the interior of the insulating glass pane, they also serve the task of producing a provisional bond between the spacer and the two glass panes with which it is glued along its edge when an insulating glass pane is assembled. Since polyisobutylenes are thermoplastic, however, they are not suitable for producing a permanently strong mechanical bond between the glass panes of the insulating glass pane. Rather, the known insulating glass pane is brought about with a hardening secondary sealing compound which is applied between the glass panes and either covers the entire outside of the spacer, so that it extends from one glass pane to the other without interruption extends another glass pane, or two strands are formed from the secondary sealing compound, one of which connects the one glass pane to the spacer and the second of which connects the other glass pane to the spacer, the outside of the spacer being able to remain completely or partially uncovered , Curing two-component plastics, in particular polysulfides, polyurethanes and silicones, are customary as the secondary sealing compound.

Known frame-shaped spacers formed from hollow profile bars consist, for example, of straight profile sections which are filled with a desiccant and are joined together to form a frame by corner connectors which are inserted into the ends of the profile sections. It is also known to form frame-shaped spacers from only a single hollow profile bar, which is bent to form corners and which is filled with a desiccant before or after bending and then closed by a straight connector which fits into the two opposite ends of the hollow profile bar is stuck. The frame-shaped spacer is coated, for example by means of a coating machine, which is known from DE 28 03 132 C2, on its two flanks with primary sealing compound, attached to a first glass pane in such a way that it adheres to it, and then also by attaching a second glass pane connected to this, resulting in a semi-finished insulating glass pane. This is then pressed to the thickness intended for it. A secondary sealing compound is then injected into the joints on the outside of the spacer, which, once it has hardened, permanently secures the mechanical bond between the insulating glass pane.

To produce such an insulating glass pane, numerous work steps are required, which in turn require complex machines. So you need a machine for bending metallic hollow profiles, a machine for filling hollow profiles or spacer frames with a free-flowing desiccant, a machine for coating the flanks of the already bent spacer with the primary sealing compound, a machine for attaching the spacer to a glass pane, one Machine for assembling and pressing the insulating glass pane and a machine for filling the Edge joint of the insulating glass pane with the secondary sealing compound, for which purpose a nozzle has to be moved around the edge of the insulating glass pane. A device suitable for this is disclosed in DE 28 16 437 C2.

US Pat. No. 6,470,561 B1 discloses an insulating glass pane known under the trade name "Intercept", the frame-shaped spacer of which is formed from a thin-walled metallic U-profile, the open side of which faces the interior of the insulating glass pane. A storage composite is extruded into the U-profile, which consists of a sticky, gas-permeable matrix material, for example a polyurethane, in which a powdery or granular drying agent is embedded. To produce the spacer, a profile rod is pre-embossed on the flanks of the U-profile at the points where corners of the spacer will later be formed, and a primary sealing compound is then applied to the flanks. The U-shaped bar prepared in this way is then folded by hand into a closed frame, the flanks moving inwards at the pre-embossed points. The beginning and end of the profile bar meet at a corner and are connected, for example by welding. The spacer frame, which is limited in size due to the instability of the U-profile, is then placed on a glass pane, pressed on and then also connected to this by placing a second glass pane on it. Subsequently, the edge joint of the insulating glass pane on the outside of the spacer is filled by injecting a secondary sealing compound, and the permanent mechanical bond between the insulating glass pane is thereby produced.

The production of such an insulating glass pane is somewhat less complex than the production of the previously described insulating glass pane, but is limited to small-sized spacers and, in addition to the attachment of the spacer, for joining and pressing the insulating glass pane, requires three different extrusion steps, namely the extrusion of the desiccant matrix , the extrusion of the primary sealing compound and the extrusion of the secondary sealing compound into the edge joint of the assembled insulating glass pane. Particular attention is paid to Care must be taken to seamlessly connect the beginning and end of the strands from the sealing compounds, in particular from the primary sealing compound.

It is also known to dispense with the use of a hollow profile or a U-profile to form a spacer and instead to extrude a strand of a primary sealing compound, in which a desiccant is incorporated, onto a first glass pane along its edge, creating a frame-like structure on the glass pane, attaching a second glass pane to the strand, pressing the semifinished insulating glass pane thus formed to its intended thickness and then filling the edge joint existing on the outside of the thermoplastic strand with a hardening, secondary sealing compound , Such insulating glass panes known under the TPS® brand have the advantage that they can be produced in any shape. However, compared to insulating glass panes which have a spacer formed from a profile bar, they are limited in the size of the spacing of their two glass panes and require a considerable amount of expensive primary and secondary sealing compound. In addition, care must be taken to ensure that the primary sealant and the secondary sealant are compatible with one another, so that undesired interactions do not occur between the primary sealant and the hardened secondary sealant.

Molecular sieves (zeolites) are usually used as drying agents.

Furthermore, insulating glass panes are known in which a composite strand made of a primary sealing compound is used as the spacer, which contains a desiccant and includes a corrugated steel strip which is intended to give the spacer stability and compressive strength. This strand, known as the swiggle strip, is prefabricated and processed from the roll. The supply rolls must be stored moisture-tight so that the desiccant does not prematurely saturate with water vapor. It is known (EP

0152807 Bl), to apply such a swiggle strip to a glass pane by means of a machine, for which purpose the glass pane has to be moved linearly and also pivoted. It is expensive. In addition, it is difficult with such insulating glass panes, the joint to get water vapor tight between the beginning and end of the swiggle strip. On the outside of the spacer formed from a swiggle strip, an edge joint remains in the insulating glass pane and is sealed with a hardening secondary sealing compound. Because of the serious disadvantages, insulating glass panes with a swiggle strip as a spacer could not prevail.

The present invention has for its object to show a way how insulating glass panes can be designed and manufactured more inexpensively, without having to accept compromises in the quality of the seal and the mechanical connection of the insulating glass pane. It should be suitable for the production of large quantities of standardized insulating glass panes.

This object is achieved by an insulating glass pane with the features specified in claim 1. Claims 34 and 36 specify a method which is particularly suitable for producing such an insulating glass pane. Advantageous developments of the invention are the subject of the dependent claims.

In a glass pane according to the invention, two individual glass panes are kept at a distance by a spacer formed from a profiled bar and bonded to it by means of a primary sealing compound. The primary sealing compound glues the two flanks of the spacer tightly to the two glass panes and seals the interior of the insulating glass pane against the penetration of water vapor and, if necessary, against losses of insulating glass panes filled with a heavy gas

Heavy gas. The primary sealing compound, which seals the two gaps between the glass panes and the spacer, is immediately and tightly joined by a compound which contains a desiccant, in particular molecular sieves, which on the one hand absorbs and binds moisture which is present in the interior of the insulating glass pane, and which traps and binds water vapor diffusing into the mass from the outside. This mass covers the side of the spacer facing the interior of the insulating glass pane, insofar as it is not already covered by the primary sealing compound. Outwardly, the primary sealant, preferably directly adjacent to it adjacent, optionally a curing secondary sealing compound, which connects the two glass panes directly or indirectly to one another and creates a permanent, mechanically strong bond between the glass panes. In the case of a direct connection, the secondary sealing compound extends from one glass pane over the outside of the spacer to the other glass pane. An indirect connection can be made by two separate strands of secondary sealing compound, one of which connects the one glass pane and the other the other glass pane with the spacer. If the primary sealing compound is selected such that it can also permanently bring about the mechanical bond of the glass panes required for an insulating glass pane, then a secondary sealing compound is not required. Such a sealing compound, which meets the requirements for both a primary and a secondary sealing compound, can be obtained, for example, by mixing a thermoplastic component (with a good sealing effect against water vapor diffusion) with a permanently hardening component (for the firm mechanical bond).

The invention has significant advantages:

♦ The primary sealing compound between the glass panes and the flanks of the spacer, in combination with the mass containing a desiccant, forms an uninterrupted barrier on the inside of the spacer, which encloses the interior of the insulating glass pane from one glass pane to the other glass pane. It joins the barrier that is already formed by the spacer itself.

♦ The mass containing a desiccant is preferably a sealant, equivalent or equivalent to the primary sealing mass, and not only hinders the diffusion of water vapor, but it also binds diffused water vapor into the mass, which both lowers the dew point in the interior of the insulating glass pane and the sealing effect increased compared to the outside air. It combines the effects of a seal and an absorber.

♦ Compared to a TPS® insulating glass pane, the diffusion of water vapor into the insulating glass pane is more difficult, because of the cross-section over which diffusion occurs can take place no longer takes place over a cross section determined by the distance between the two glass panes, but is limited to the much smaller cross section in the gap between the spacer and the two glass panes. However, the absorption of water vapor from the interior of the insulating glass pane is not impeded compared to a TPS® insulating glass pane, because the undiminished, maximum cross-section is still available, namely the entire surface of the mass containing the desiccant facing the interior of the insulating glass pane.

♦ Compared to a TPS® insulating glass pane, a significantly smaller amount of desiccant-containing mass is required because the layer adhering to the inside of the profile bar does not contribute to the mechanical stability of the spacer or to the mechanical connection of the glass panes in any phase of the production and use of an insulating glass pane must afford. The primary sealing compound adhering to the flanks is responsible for this. It is different with a TPS® insulating glass pane, because there the strand must create at least a preliminary bond between the two individual glass panes from the mass containing the desiccant. While the height of a TPS® strand is typically 8 mm to 12 mm over the full width of the spacer, according to the invention a layer thickness of 2 mm to 4 mm is sufficient for the desiccant-containing composition applied to the inside of the spacer, depending on how large the absorption capacity is for water vapor and the sealing effect against water vapor. If desired, the layer thickness can of course also be greater.

♦ Due to the fact that the desiccant-containing mass extends from the primary sealing compound on one side of the spacer to the primary sealing compound on the other side, any leaks in the spacer have no or less adverse effect on the sealing of the insulating glass pane. The situation is different for insulating glass panes with a conventional structure: there are any leaks, for example pores or cracks or gaps, which occur in particular in the area of the corners and in the area of the joint where the ends of a profiled bar from which the spacer is formed meet. devastating, because conventional secondary sealing compounds, which are the only ones in the prior art that can be used to cover such leaks in the spacer not able to prevent the ingress of water vapor as it would be necessary to achieve a multi-year life of the insulating glass pane.

^♦ Insulating glass panes in which the outside of the spacer is not even covered by secondary sealing compound (US Pat. No. 5,439,716 A) would be unusable from the outset if the hollow profile rod from which the spacer was formed were leaky at any point. However, an insulating glass pane according to the invention is leakproof despite a leaky spacer.

♦ The quality requirements for profile bars, from which the spacers are formed, can be reduced because the profile bars only have to perform a mechanical task, namely to keep the glass panes of the insulating glass pane at their specified distance under the typical conditions of use and loads and to deal with one or to connect several sealing compounds. Therefore very inexpensive profile bars can be used, which can be optimized for minimal heat transfer. It is even possible to use foamed profile bars, which are characterized by particularly good thermal insulation and good mechanical stability.

♦ The invention is suitable for spacers made of the most varied materials and in many different cross-sectional shapes. In particular, the invention can also be implemented with all conventional profile bars used for frame-shaped spacers, also with the particularly frequently used hollow profiles made of steel or aluminum, but also with U-shaped or C-shaped metal or plastic profiles or with metal profiles such as those used for Example from DE 202 16 560 Ul are known.

♦ By applying a strand of a paste-like mass that contains the desiccant, there is no need for a separate operation to fill hollow section bars with a free-flowing desiccant, and one saves an apparatus for such a joining process.

♦ In contrast to the insulating glass pane known from US Pat. No. 6,470,561 B1, which is known under the name Intercept®, there is no need for a separate operation for applying a matrix material in which a desiccant is incorporated, which is used to coat the flanks of the spacer with a primary sealant is added, because according to the invention the mass containing the desiccant can be applied in one operation with the primary sealant; it can even be one and the same sealing compound, which extends continuously from one flank over the inside of the spacer to its other flank.

♦ The mass containing the drying agent compensates for relative movements that occur as a result of different coefficients of expansion of the glass panes and the spacer when the temperature changes.

♦ Extremely lower heat transfer values are achieved in the area of the spacer, especially if it is made of plastic.

♦ The mass that extends from one glass pane to the other glass pane can fulfill all the tasks that the primary sealing compound fulfills in a conventional insulating glass pane: in addition to its main task of forming a water vapor barrier as the primary seal, it can also serve as an assembly aid when assembling the insulating glass pane by creating a temporary bond by gluing the spacer to the two glass panes. Added to this is the ability to absorb water vapor due to the storage of the desiccant.

♦ The invention is also advantageous from an aesthetic point of view: in contrast to a striking, shiny surface of a metallic spacer, primarily aluminum, which outshines every frame color, in particular darker frame colors, a matt, dark to black mass interacts with those of the others Glass panes appearing reflections of the respective window frame color and reflects their color.

♦ The profile bar can be coated before it is formed into a frame-shaped spacer. This enables a very efficient linear working method with a minimum of machine effort.

♦ Overall, the invention enables very inexpensive and qualitatively high-quality insulating glass production and is also and especially suitable for the rational production of large quantities of insulating glass panes in standardized dimensions. If the requirements for the insulating glass panes are less stringent, the mass containing the desiccant can also be applied to the profile rod in such a way that it lies next to a primary sealing compound applied to the flanks without directly contacting it. However, it is also expedient in this Fa if the dry medium mass extends over the entire length of the inside of the spacer and in particular over the inside of the corners.

The primary sealing compound can also be the basis for the desiccant-containing compound. The two masses can also cross-brain. The material with which the thermoplastic spacer is formed in TPS® insulating glass panes can be used as the desiccant-containing mass. This is a material based on a polyisobutylene and is also well suited for the purposes of the invention. It can also be used between the glass panes of the insulating glass pane and the flanks of the spacer instead of a sealant-free sealant. It is also advantageous to use a primary sealing compound, for example a polyisobutylene, as the basis for the desiccant-containing mass and to concentrate the desiccant in the mass facing the interior of the insulating glass pane, but the mass applied to the flanks of the spacer is low in desiccant or to dry completely without desiccant.

The combination of the desiccant-containing mass and the primary sealing compound is applied to the inside of the spacer in a width that exceeds its width and extends to the flanks of the spacer so that it is compressed when the glass panes are pressed together and adheres flatly to the glass sheets. In order for the compression to occur, the mass containing the desiccant does not have to adhere to the entire surface of the spacer. The combination of the desiccant-containing mass and the primary sealing compound is preferably applied to the spacer or to a profile rod that bends it in such a way that it covers the inside thereof, which faces the interior of the insulating glass pane, and also a strip of the flanks. This ensures that the combination of dry medium and primary sealing compound when the glass panes are pressed together against the spacer receives enough pressure in each area in the area of the flanks to glue seamlessly with the spacer flanks on one side and with the glass panes on the other side. The combination of the desiccant-containing mass and the primary sealing compound thus creates at least a preliminary bond between the glass panes and the spacer. If necessary, the bond is completed by a secondary sealant. This can extend from one glass pane without interruption over the outside of the spacer to the other glass pane. In order to permanently establish the required mechanical bond, it is sufficient to connect the glass panes to the secondary sealing compound only indirectly. For this purpose, they can be introduced in the form of two separate strands, one of which connects the spacer to one glass pane and the other strand connects the spacer to the other glass pane. This saves secondary sealing compound and reduces the heat transfer in the area of the spacer.

If the flanks of the spacer are flat and the gap between the flanks and the glass panes is essentially filled by the primary sealing compound or by a combination of a desiccant-containing compound and a primary sealing compound, a secondary sealing compound can be used at an angle between the outside of the spacer and the respective one Provide adjacent glass pane and, in particular, load a surface in the form of a fillet there. It is particularly preferred to provide the secondary sealing compound only in the gap between the flanks of the spacer and the individual glass panes. This has the advantage that the outside of the spacer can be flush with the edge of the glass panes, which increases the usable light passage area through the insulating glass pane and the depth with which the edge of an insulating glass pane is framed in a window frame or a door frame; that enables graceful frames. It is even possible to have the outer side of the spacer protrude on both sides over the flanks of the spacer and to cover the edge of the two glass panes with the projections that are bonded in this way. This provides a simple way of protecting the glass edges against sputtering and protecting the craftsmen who transport and install insulating glass panes from cut injuries. In this advantageous further development of the invention, the secondary extends Sealing compound preferably into a gap between the projections of the spacer and the edge of the glass panes.

In an insulating glass pane according to the invention, the secondary sealing compound preferably adjoins the primary sealing compound or a combination of the desiccant-containing compound and the primary sealing compound. Since the primary sealant extends into the gap between the flanks of the spacer and the glass panes and this gap has a small width that is small compared to the spacing of the glass panes and can only be measured to obtain a reliable seal, the area is , over which a contact between the primary sealing compound and the secondary sealing compound can take place, is low, if one uses the area over which the primary and the secondary sealing compound in a TPS® insulating glass pane touch. For this reason alone, the extent of any incompatibility reactions between the primary and the secondary sealant is small. Nonetheless, it could happen that substances, for example a plasticizer, migrate from a sealant into the interface between the primary and secondary sealant and form a bubble there. However, this could only lead to a leak if the bladder displaced the primary sealing compound or the combination of desiccant-containing compound and primary sealing compound or detached it from a sealing surface. However, since the primary sealant extends into a narrow gap, this is almost impossible. In addition, you can secure the position of the primary sealing compound or the combination of the dry-middle material and the primary sealing compound at their intended location by interlocking them positively with the spacer. In an advantageous development of the invention, this is the case. The positive connection between the primary sealing compound or the combination of desiccant-containing compound and primary sealing compound and the spacer is preferably at the transition from the inside to the flanks of the spacer. It is expedient to bring about the positive fit by undercut the entire length of the profile bar or the spacer formed therefrom on its flanks. The undercut forms, especially if it is designed into a dovetail, an abutment, which at Pressing the insulating glass pane prevents the primary sealant or the combination of the desiccant-containing compound and the primary sealant on the flanks from evading the pressure. This is beneficial for sealing the gap between the spacer and the glass panes. Such undercut fatigue can easily be achieved when producing the profile bars by extrusion from MetaU or by extruding plastic and does not have to lead to an increase in the price of the profile bar. A form fit between the spacer and the primary sealing compound or the combination of a desiccant-containing compound and a primary sealing compound in the manner of a dovetail joint is particularly suitable. The mechanical interlocking with the spacer adds to the adhesive effect of the primary sealing compound or the combination of the desiccant-containing compound and the primary sealing compound and ensures a reliable bond with the spacer even with large temperature changes.

The profile bars from which the spacers are formed can be conventional metal hollow profile bars. Profile bars made of plastic are preferred, since sufficient mechanical stability, a low heat transfer coefficient and low costs can be achieved at the same time. There is no need to take any account of the appearance of the profile rod, since it is invisible when the insulating glass pane is installed.

The cross-sectional shape of the profile bars, from which spacers are formed, is practically not subject to any restrictions according to the invention, as long as the spacer fulfills its main task of keeping the two individual glass panes of an insulating glass pane at a sufficient pressure-resistant distance and dealing with the desiccant-containing mass, with the primary and possibly with the to connect secondary sealant. Hollow profiles, U-profiles, C-profiles, mixed forms thereof and also full profiles without any hollow space can be used. Spacers which are formed from hollow profile bars are particularly preferred. They are characterized by good mechanical stability even with thin walls. In the simplest case, the cross section of the hollow profile rod is a rectangle with the lowest possible height, around the material costs and the To keep the heat transfer coefficient low. The minimum height depends on the fact that the required pressure resistance and security against tipping is achieved for the legs of the spacer and that the primary sealing compound applied to the flanks of the profile bar or the combination of a drying agent-containing compound and a primary sealing compound provide sufficient resistance to the indentation of water vapor in the insulating glass pane. With a profile bar height of 4 mm, you can already achieve useful results.

An inexpensive way to use a VoU profile is to form the profile rod from a foamed plastic, which combines sufficient mechanical stability with a low heat transfer coefficient and low costs.

Another possibility is to build the spacer from profile bars which have a U-profile in cross section, but whose back, unlike the prior art known from US Pat. No. 6,470,561 B1, does not form the outside but the inside of the spacer. If, according to the invention, not only the primary sealing compound or a part of the combination of the primary sealing compound and the drying agent-containing compound, but also the secondary sealing compound, is applied to the flanks of such a U-shaped profile rod, the interior of the U-section can be placed on the outside of the spacer remain completely free of secondary sealant. Outside of the corners of the spacer, it may be expedient or necessary to subsequently seal the insulating glass pane by introducing sealing compound, in particular primary sealing compound.

The invention is particularly suitable for insulating glass panes in which one or more rungs are installed. Insulated glass panes with built-in rungs are known, for example, from DE 195 33 854 Cl, from DE 296 16224 Ul and from GB 2 242 699. The problem is to connect the rungs permanently and aesthetically to the spacer. A further development of the invention is particularly suitable for this, in which the spacers have one or more recesses or openings on their inside. These are due to the mass containing desiccant Completely covered, whereby additional gearing between the spacer and the mass can occur at the edge of the recesses or openings. End pieces of the rungs, with which the rungs are anchored to the spacer, can be inserted through the mass containing desiccant into the recess or opening of the spacer behind it and take up a predetermined place there, which can be secured by a positive connection. The desiccant-containing mass advantageously also connects to the end pieces and helps to fix them. In addition, the fact that the mass can be displaced into the recess or opening located behind it allows the end pieces to stand on the mass without disturbing gaps, which in turn is supported by the spacer which supports it. In this way, an attractive appearance is obtained for anchoring the rung end pieces to the spacer and to the mass containing the desiccant.

The recess or opening under the desiccant-containing mass is preferably closely matched, at least transversely to the longitudinal direction of the profile bar, to the width of the part of the end piece to be inserted, so that it can be positioned and centered centrally between the glass panes. In the longitudinal direction of the profile bar, the recesses or openings can also be adapted to the end pieces, but a longitudinally continuous recess is preferably used, for example by using an extruded or ex-shaped profile that is U-shaped or C-shaped in cross section. In the longitudinal direction, it is sufficient to fix the rung end pieces themselves by means of the mass containing the desiccant, into which the end pieces are inserted.

To make it easy to find the treads on which the rungs are to be anchored, you can mark the profile bars on the designated treads. It is even more favorable to mark the surface of the mass containing the desiccant at the intended location, for example by means of an impression or by marking using a ink jet printer.

Spacers which have several chambers in cross section, one of which is in the middle between the flanks, are particularly suitable for the assembly of rungs located chamber is at least in sections, preferably at full length, open to the interior of the insulating glass pane, the opening (s) being covered by the desiccant-containing composition. In this way, a sufficiently stiff and drap-resistant spacer profile can be obtained with small wall thicknesses and a chamber accessible in it from the interior of the insulating glass pane, the cross-section of which is closely matched to the contour of the rung end piece to be inserted and also undercuts for interlocking with the rung end piece and with the mass containing desiccant. Even if the cross-section of the open chamber is closely matched to the width of the rung end piece, this can displace the desiccant-containing mass into the open chamber, since the displacement can also take place in the longitudinal direction of the profile. This also improves the fixation of the rung end pieces in the longitudinal direction.

The contour of the flanks of the spacer can be chosen, for example, as disclosed in US Pat. No. 5,439,716 A. A good positional stability coupled with a lower consumption of secondary sealant and a small contact area between the primary and secondary sealant can be achieved if the spacer profile is designed so that the flanks have a concave and / or undercut flattened outer surface, at least soften a portion of the primary sealant and the secondary sealant are applied. The layer thickness of the secondary sealing compound is preferably the smallest at the edges of the concave surface region, it being preferred if a flat surface region adjoins one edge of the concave surface region, which surface region comprises the primary sealing compound or a combination of the primary sealing compound and the desiccant-containing compound is covered. Another flat surface area preferably also shoots at the outer edge of the concave surface area. The further flat surface area should be covered by the secondary sealing compound when the insulating glass pane is assembled. The flat surface areas are closest to the glass panes and promote an exact alignment of the spacer profile between the glass panes. But this can also be achieved without a flat surface area. It is preferred that the flanks be close to the outside of the profile and in the vicinity of the inside of the profile have a particularly small distance from the glass panes, ie that the profile width of the spacer is greatest there.

In an insulating glass pane according to the invention with a rectangular outline, the spacer could be formed from four profile bars which are connected to one another by right-angled plug connectors. It is then necessary to ensure that the primary sealant or the combination of dry medium and primary sealant is applied without gaps at the corners. This is easier to achieve if the spacer has corners that are not welded by connectors, but by bending a profile bar. This is therefore preferred for purposes of the invention. The bending of metal hollow profiles or of metal U-profiles to form a frame-shaped spacer for insulating glass panes is state of the art. But plastic profile bars can also be bent into a frame-shaped spacer. Further details are disclosed in DE 10 2004 005 354 AI and in DE 102005 002 284 AI, to which reference is hereby made.

A profile bar with a sufficiently low full profile can, depending on the material it is made of, be bent under certain circumstances after the bending point has been marked by forming a groove on the inside of the profile bar, for example by pressing the profile bar over its entire width is. The bending can be facilitated by providing recesses on the outside and / or on the inside of the profile bar which extend over the entire width of the profile bar and can be produced by machining. On the inside of the profile bar, the primary sealing compound or the combination of desiccant-containing compound and primary sealing compound can also be applied without interruption in the corner area before the professional rod is bent to cover the corners; bending is facilitated by material weakening in the corner area.

If the profile rod is made of a foamed plastic that is thermally deformable, for example because it contains thermoplastic components in addition to cross-linking components that lose the necessary mechanical stability, then one can be used compress such a profile bar with a heated stamp on the control unit at which a corner is to be formed, thereby facilitating the bending and at the same time promoting the formation of a stable corner.

Both in the case of solid profiles made of plastic and in the case of hollow profiles, in particular made of plastic, it is also possible to place two recesses at the location of the profile bar at which a corner is provided, by machining the profile bar. The recesses should be designed and arranged in such a way that they delimit two projections which, after the corner has been bent, engage in the two recesses, in particular snap into place, and lock the legs of the spacer which meet at the corner at a certain angle. Examples of this are disclosed in DE 102004005 354 AI.

A method for the manufacture of an insulating glass pane according to the invention is specified in claim 34. It begins with the provision of a profile bar, which is either removed from a storage facility or formed into a spacer immediately before it is processed, in particular by extrusion or extrusion. If the frame-shaped spacer is to be assembled from straight hollow profile bars with hooves from angled connectors, then the profile bars are cut to the appropriate length, coated on the later inside of the spacer with an adhesive mass that contains a desiccant, so that the mass taken on its own or in combination with a primary sealing compound, it covers the entire width of the profile bar and extends on both sides to the flanks of the spacer. Then the frame-shaped spacer is assembled from the coated profile bars and, if necessary, a re-coating of the side faces of the plug connectors is carried out at the corners.

However, if the spacer is to be bent by bending it from a profile bar, then the necessary machining and / or shaping processing will be carried out on the controls provided for the corners before the profile bar is coated and the profile bar will be coated with a dry-matter-based mass and with primary Sealant performed before bending. When the profile rod is bent, the desiccant-containing mass and the primary sealing compound are also bent with ease. By connecting the ends of the profile bar together, the curved profile bar is closed to form a frame-shaped spacer. For this purpose, a straight connector can be inserted into the two opposite ends of the profile bar. The ends of the profile rod can be of blunt design and abut directly against one another or abut on a projection, in particular on a rib, of the connector. But it is also possible to make the ends of the profile bar complementary to each other, so that one or two projections are obtained at one end, which can be inserted into one or two matching recesses at the other end of the profile bar and fixed therein, in particular by latching. DE 10 2004 005 354 AI discloses further details.

If there is not a seamless transition of the primary sealant at the butt joint at which the two ends of the profi bar were connected, this can be done by subsequently shaping the primary sealant or by applying a small additional amount of the primary sealant achieve. It is particularly expedient to provide a wedge-shaped or notch-like recess, which extends transversely to the longitudinal direction of the profiled rod, on the joint piece of the profiled rod on the inward-facing side of the profiled rod and to subsequently seal it. When the sealing compound is injected into such a recess, a dynamic pressure is created which is favorable for reliable sealing. Preferably, the joint is then covered on the side of the profile rod facing the interior of the insulating glass pane with a badge which does not allow the observer to see the joint. Such a sticker could be a label that is stuck to the surface of the desiccant mass. It is cheaper to use a preferably rigid badge, which has on its underside one or more extensions which are pressed into the mass containing the desiccant, even better into a recess in the profile bar covered by this, preferably without the mass containing the desiccant to pierce. This ensures that the badge is permanently seated even if the insulating glass pane is installed in such a way that the Plaque is located at the top of the insulating glass pane. Another advantage of the sticker is that it bears a trademark of the manufacturer and / or can be labeled with production data for the insulating glass pane.

If the spacer is coated and assembled with a combination of a desiccant-containing mass and a primary sealing compound, it is attached to a first glass pane so that it adheres to the edge of the glass pane in the vicinity. Then a second glass pane is attached to the spacer in relation to the first glass pane, so that it also adheres to the second glass pane. The semi-finished insulating glass pane assembled in this way is pressed to its specified thickness. The spacer can be attached by hand or machine. Devices suitable for this are state of the art. The assembly and pressing of the insulating glass pane are also state of the art. If the insulating glass pane is only temporarily held together by the desiccant-containing compound and / or the primary sealing compound, the spacer is finally connected to the two glass panes by applying a curing secondary sealing compound. As in the prior art, this can be done in such a way that the secondary sealing compound is applied without interruption from one glass pane to the other glass pane on the outside of the spacer, see for example DE 28 16437 C2. However, it can also be done in such a way that two separate strands of the secondary sealing compound are injected into two joints, which are bonded between the spacer and the two adjacent glass panes, as is disclosed, for example, in US Pat. No. 5,439,716 A.

With an essentially rectangular spacer profile, it is also possible to inject two strands of secondary sealing compound into the angle between the outside of the spacer and the two glass panes.

It is particularly efficient to apply the secondary sealing compound to the flanks of the profile bar, from which the frame-shaped spacer is then formed (independent address 35). This procedure is particularly suitable for spacers whose corners are created by bending a profile bar. The dry medium, the primary sealant and the secondary sealant can be applied in a single pass. If the secondary sealing compound of the primary sealing compound is applied in a new manner, then the primary sealing compound and / or dry-middle compound already applied to the flanks of the profile bar can form a barrier to the application of the secondary sealing compound, which is advantageous. The operations of loading the corners of the spacer and firing the spacer, attaching the spacer to a glass pane, attaching a second glass pane and pressing the insulating glass pane can remain unchanged. There is no separate sealing process. This allows a particularly efficient way of working, not only because a separate sealing process can be performed, but also because the spacer can be coated linearly with the primary and secondary sealing compound in one pass. At the same time, a mark can be made on the dry-medium mass at predetermined points where a rung should be placed.

If the secondary sealing compound is applied before the corners are bent, it is best to leave a narrow strip of the flanks adjacent to the outside of the profile bar so that it can still be gripped on the flanks when the spacer is formed and fired. The amount of the secondary sealing compound is preferably dimensioned such that the strip which is initially cleared is covered by displacing the secondary sealing compound when the insulating glass pane is pressed. After the spacer has been fired, rungs can be anchored in the manner described in that their end pieces are inserted into or through the desiccant-containing mass into a recess in the spacer.

A further advantage of the invention is that interruptions in the application of the secondary sealing compound can be tolerated, because a firm mechanical bond is nevertheless guaranteed and the tightness is excellent due to the mass filled with desiccant and its special arrangement on the inside of the spacer, possibly also on the flanks of the spacer. Embodiments of the invention are illustrated in the accompanying drawings. The same or corresponding parts are designated with the same reference numbers. In the description of the examples, further features and advantages of the invention will become clear.

FIG. 1 a shows a cross section through one leg of a spacer coated with primary and secondary sealing compound,

FIG. 1b shows the leg of the spacer from FIG. 1 a inserted between two glass panes,

FIG. 1 c shows the leg of the spacer from FIG. 1 b after the two glass panes have been pressed together to the predetermined thickness of the insulating glass pane that is bonded with them,

FIG. 1d shows the arrangement from FIG. 1b, supplemented by a rung with a rung end piece, the

FIGS. 2a to 2d show representations corresponding to FIGS. 1a to 1d with a second exemplary embodiment of a spacer modified compared to FIGS

FIGS. 3a to 3d show representations corresponding to FIGS. 1a to 1d with a third exemplary embodiment of a spacer which is modified compared to FIGS. 1a to 1d

FIGS. 4a to 4d show representations corresponding to FIGS. 1a to 1d with a fourth exemplary embodiment of a spacer modified from FIGS

FIGS. 5a to 5c show representations corresponding to FIGS. La to lc with a fifth exemplary embodiment of a spacer modified compared to FIGS. La to lc, FIG. 5d shows a side view of a spacer of the type shown in FIG. 5a with a first exemplary embodiment for the filling of a corner, the

FIGS. 5e and 5f show a side view of a spacer of the type shown in FIG. 5a with a second exemplary embodiment of the corner's grooving

FIGS. 6a to 6c show representations corresponding to FIGS. La to lc with a sixth exemplary embodiment of a spacer modified from FIGS. La to lc

FIG. 6d shows in a display unit as in FIG. 6c a partial cross section through an insulating glass pane, in which the secondary sealing compound is arranged to completely overlap the spacer, the

FIGS. 7a to 7c show representations corresponding to FIGS. La to lc with a seventh exemplary embodiment of a spacer modified compared to FIGS. La to lc,

FIG. 8a shows, in an oblique view, a section of a leg of a spacer of the type shown in FIG. La with a straight connection control located therein, which

Figure 8b shows the formation of a corner in a spacer of the type shown in Figures la and 8a, the

FIGS. 8c to 8e show a detail in a side view of three successive phases for forming the corner shown in FIG. 8e after the spacer profile has been coated with a primary sealing compound which

FIG. 8f shows an oblique view of a section of a spacer according to FIG. 8b, but coated with a primary sealing compound and with a secondary sealing compound that 8g shows the insertion of a rung with a rung end piece in the spacer according to FIG. 8f,

FIG. 9 shows an oblique view of a nozzle head for applying a primary sealant containing desiccant to a professional rod of the type shown in FIGS. 1 a to 1 d,

FIG. 10 shows the nozzle head from FIG. 9 in longitudinal section, namely cut at right angles to the longitudinal axis of the profile rod,

FIG. 11 shows a section corresponding to FIG. 10 through a modified nozzle head, with which two differently composed masses can be applied to a profile rod in coextrusion,

FIG. 12 shows a cross section through the profile rod coated with it,

FIG. 13 shows a cross section through a section of an insulating glass pane made with it

FIGS. 14 and 15 show, in representations corresponding to FIG. 12 and FIG. 13, a modified exemplary embodiment with a uniform sealing compound for a three-sided coating of the spacer profile,

FIG. 16 shows, in an oblique view corresponding to FIG. 9, a suitable nozzle head,

FIG. 17 shows the nozzle head from FIG. 16 in longitudinal section,

FIG. 18 shows how profiled bars, which are connected to one another at their ends in a manner as shown in FIG. 8a, the two profiled bar ends can be plugged together with hooves from clamping jaws, FIG. 19 shows, in an oblique view, the application of a badge on the dry-medium mass on the side of a spacer facing the interior of the insulating glass pane in the region of a shock absorber of the type shown in FIG. 18,

FIG. 20 shows an oblique view of how a connection point of the type shown in FIG. 18 can be secured by inserting a key,

FIG. 21 shows an oblique view of the arrangement of three nozzle heads for coating a hollow section rod with two different sealing compounds,

FIG. 22 shows a section corresponding to FIG. 10 through a first of the three nozzle heads from FIGS. 21 and

Figure 23 shows a section through the profile rod in the area of the other two nozzle heads.

Figure lc shows a section of an insulating glass pane 1, consisting of two individual glass panes 2 and 3, between which there is a frame-shaped spacer 4, which is shown as a single part in Figures 8a and 8b. The spacer 4 has a hollow profile in cross section with a base 5, which has a flat outer side 6. From the opposite inner side 7 of the base 5 two mirror-like legs 11 extend, which have projections 8 directed towards one another at their ends remote from the base 5. The legs 11 bulge the flanks of the spacer 4, which face the glass panes 2 and 3. The legs 11 have a longitudinal undercut 10 at their end remote from the base 5. The two undercuts 10 are afterbuilt together in the shape of a dovetail. An intermediate wall 13 extends from the location of the undercuts 10, which approaches the base 5 in an arc shape up to the center of the profile and, together with the legs 11 and the base 5, delimits a cavity 14. Between the projections 8 and the intermediate wall 13 is a V-shaped channel 9, which is open to the interior 17 of the insulating glass pane and its opening is also undercut through the projections 8. The legs 11 are concave on their outside in cross section. The concave surface area 15 and the undercuts 10 are separated from one another by a shoulder 16.

In order to load an insulating glass pane 1 with such a spacer 4, the spacer 4 or a profile rod from which the spacer 4 is formed is first coated on its inside 12 with an adhesive composition 18, in which a desiccant is incorporated. The mass 18 extends from the shoulder 16 on one side of the profile bar without interruption over the entire inside 12 to the opposite shoulder 16 and protrudes laterally beyond the flanks 11, i.e. the mass 18 is applied wider than the greatest width of the spacer 4 measured over the flanks 11, see FIG. 1a. In this example, the mass 18 also serves as the primary sealing compound 19, which seals the gaps between the flanks 11 and the glass panes 2, 3 and temporarily connects the glass panes 2, 3 to the spacer 4. A strand of a secondary sealing compound 20 is applied to the concave surface areas 15, which, as shown in FIG.

A spacer 4, which is coated in the manner described, is attached to a first glass pane 2, so that it adheres to it at least with hooves of the adhesive mass 18. Then the second glass pane 3 is placed on the still free side of the spacer 4, so that it touches at least the mass 18 and this also adheres to the second glass pane 3, as shown in FIG. 1b. The two glass panes 3 and 4 are now pressed against each other until the insulating glass pane that has been molded from them has reached their predetermined thickness. The selected contour of the mass 18 and the secondary sealing mass 20 on its surface facing the glass panes 2 and 3 allows the air to escape from the gaps which still exist, as indicated by the flow arrows 21 shown in FIG. 1b. Until the predetermined thickness of the insulating glass pane 1 is reached, the mass 18 and the secondary sealing compound 20 are compressed and bond flatly and sealingly to the two glass panes 2 and 3, as shown in FIG. 1c. The desiccant-containing composition 18, which also serves as the primary sealing compound, can be based on polyisoburylene in which a granular or powdery desiccant is incorporated. Polyisobutylenes have thermoplastic properties and do not become brittle over time, but retain their good sealing properties. The secondary sealing compound 20 is a hardening sealing compound, for example based on thiokol or polyurethane or a silicone resin. After curing, in combination with the adequately drap-proof spacer 4, it brings about the required permanent mechanical and drap-proof bond of the insulating glass pane 1. Because the secondary sealing compound 20 is applied only to the flanks 11 of the spacer 4, the amount required for this is comparatively small , Since the secondary sealing compound 20 is additionally provided on a concave surface area 15, the area on which the compound 18 and the secondary sealing compound 20 touch are particularly small. This is beneficial in order to limit any incompatibility reactions between them to an uncritical extent. Even if a reaction, for example a bubble formation, should take place due to a migration of components 18, 20 at the separating surface between urns, this does not lead to detachment of the mass 18, which is important for the sealing, since this does not only occur on the glass panes 2 and 3 adheres, but also to the flanks 11 and the inside 12 of the spacer 4, with which it is additionally toothed on the shoulder cuts 10 and behind the projections 8, behind which an extension 18a of the mass 18 extends.

The size of the spacer 4 is matched to the size of the glass panes 2 and 3 in such a way that the outside 6 of the base 5 is flush with the edge of the glass panes 2 and 3. In the case of stepped panes, in which the two glass panes 2 and 3 are not of the same size, it is best to choose a size for the spacer 4 such that the outside 6 of the base 5 is flush with the edge of the smaller glass pane. The amount of secondary sealing compound 20 is preferably selected so that it fills the gap between the flanks 11 of the spacer and the two glass panes 2 and 3 as completely as possible, without overflowing to the outside. The amount and contour of the dry-middle and sealing mass 18 is preferably chosen such that its surface facing the interior 17 of the insulating glass pane is almost flat. A thickness of the mass 18 of at least 2.5 mm is aimed for.

FIG. 1d shows how a rung 22 can be arranged in such an insulating glass pane 1. FIG. 1d shows a rung 22 which is formed as a hollow profile bar and which is connected to an end piece 23 which has a plate 24 which is narrower than the distance between the glass panes 2 and 3 in the finished insulating glass pane (FIG. 1c). A first extension 25 extends from one side of the plate 24 into the rung 22. From the other side of the plate 24, a second extension 26 extends through the desiccant-containing mass 18 into the channel 9, with a barb-shaped contour of the second ten extension 26 can be achieved that it snaps behind the projections 8 and is reliably anchored to the spacer 4. A barbed contour of the first extension 25 can make it difficult to move the first extension 25 in the rung 22. An undesired movement of the rung 22 in the longitudinal direction of the spacer 4 prevents the desiccant-containing mass 18 on which the plate 24 presses and which surrounds the second extension 26.

The exemplary embodiment shown in FIGS. 2a to 2d differs from the exemplary embodiment shown in FIGS. 1a to 1d in that a spacer 4 with a lower profile cross section is used, in which the cavity 14 and accordingly the intermediate wall 13 are missing and the base for this purpose 5 was chosen somewhat thicker.

The exemplary embodiment shown in FIGS. 3a to 3d differs from the exemplary embodiment shown in FIGS. 1a to 1d in that the base 5 has a projection 27 on both sides, which extends under the edge of one glass pane 2 or the other glass pane 3 extends. On the projection 27 there are transverse ribs 28 which rest against the edge of the glass pane 2 or 3. Secondary sealing compound 20 can penetrate into the spaces between the ribs 28 when the insulating glass pane 1 is pressed, and the gap between the projections 27 and the lower edge of the glass panes 2 and 3 can be seen, see FIG. 3 c. The exemplary embodiment shown in FIGS. 4a to 4d differs from the exemplary embodiment shown in FIGS. 1a to 1d in that the cavity 14 and the intermediate wall 13 delimiting it have been omitted. To compensate, the base 5 is slightly thicker. The channel 9 was given a larger cross-section and has a proper cross-sectional shape which is no longer a V but rather a C. The flanks 11 of the spacer 4 have a different contour, in which a greater sealing depth is provided for the dry middle mass 18, which also serves as the primary sealing mass and seals the insulating glass pane, than in the first exemplary embodiment. The undercuts 10 are less pronounced.

The exemplary embodiment shown in FIGS. 5a to 5f differs from the exemplary embodiment shown in FIGS. 1 a to 1d in that the spacer 4 is built from a relatively low rectangular VoU profile, i. H. has no voids. In this profile shape, a primary sealant 18 containing desiccant is applied to the inside 12 completely and the flanks 11 are partially covered. A spacer 4 coated in this way is added between the two glass panes 2 and 3. When these are pressed against one another, the desiccant-containing primary sealing compound 18 is compressed and completely fills the gap between the flanks 17 and the glass panes 2 and 3, as shown in FIG. 5c. In this exemplary embodiment, the size of the spacer 4 is somewhat smaller than the size of the glass panes 2 and 3, so that on the outside 6 of the spacer 4 between the glass panes 2 and 3 there remains an edge joint 29 into which the insulating glass pane 1 is pressed after pressing two strands of secondary sealing compound 20 are injected, which preferably do not touch and preferably have a concave surface 30 in the manner of a fillet.

A spacer 4 with such a profile cross-section can be formed from a rectangular, solid profile rod, in which two recesses 31 and 32 are formed over the entire width of the profile rod, by machining, in particular by drilling and milling, on the control units provided for a corner , Which limit two projections 33 and 34, which engage by bending the profile bar to the corner in one recess 31 or in the other recess 32, preferably snap into it and thereby fix the angle which the two legs of the spacer 4 enclose at the corner, especially a right angle. A more detailed description of the formation of such a corner can be found in DE 102004005 354 AI and in DE 10 2004 005 471 AI, to which reference is hereby made.

FIGS. 5e and 5f illustrate a further possibility of lifting a square spacer 4 with hooves of a solid profile bar with a rectangular cross section, as shown in FIG. 5a. For this purpose, a recess 35 is formed on the outside at the location of the profile bar at which a corner is to be tied, which extends approximately to half the height of the profile cross section. The resulting weakening of the profile bar permits bending not only of right angles, but also of angles that are smaller or larger than a right angle, so that spacers can also be formed for model panes that have, for example, a triangular or trapezoidal outline to have. The angles are stabilized by shooting the profile rod into a frame.

The exemplary embodiment shown in FIGS. 6a to 6c differs from the exemplary embodiment shown in FIGS. 5a to 5c in that the spacer 4 is formed from a conventional metal hollow profi bar, as is disclosed, for example, in US Pat. No. 5,439,716. A desiccant-containing primary sealant 18 extends over the inside 12 of the spacer 4 and adjoins it over a flat surface area 36 on the flanks 11 of the spacer 4, whereas the secondary sealant 20 in the form of two strands in an outwardly widening gap between the Flanks 11 of the spacer and the glass panes 2 and 3 is injected, as shown in Figure 6c. In the example shown in FIG. 6c, the outline of the spacer 4 is somewhat smaller than the outline of the glass panes 2 and 3, as a result of which a groove-like surface 30 is made possible for the secondary sealing compound 20. The exemplary embodiment shown in FIG. 6d differs from the exemplary embodiment shown in FIG. 6c in that the spacer 4 is still somewhat smaller in outline than in FIG. 6c, which results in an edge joint 29 which completely seals the outside 6 of the spacer 4 with a secondary sealing compound 20 is sealed overlapping.

In the examples in FIGS. 6a to 6d, a frame-shaped spacer 4 can be formed from metal hollow profile bars, as is known in the prior art, preferably by bending a hollow profile bar into a frame-shaped building in which the two ends of the hollow profile bar face each other and connecting the end by means of a straight connector.

The exemplary embodiment shown in FIGS. 7a to 7c differs from the exemplary embodiment shown in FIGS. 1a to 1c in that the spacer 4 is made of a profile bar with a U-shaped cross section, the base 5 of which faces the interior 17 of the insulating glass pane. The legs 11 of the spacer 4 extending from the base 5 are provided with concave outer surfaces and receive a secondary sealing compound 20. A primary sealant 18 containing desiccant covers the entire base 5 and extends to a certain extent on the side surfaces of the spacer 4 up to the edge of the concave surface area 15. The legs 11 can be adhered to, starting from their outer edge, at the legs provided for forming corners be cut at a distance from the base 5 or be provided with a recess, corresponding to the recess 35 in FIGS. 5e and 5f. After the corner has been bent, as shown in FIG. 5f, there remains a web between the recess 35 and the inside 12 of the spacer 4, which is available for a continuous coating of the flanks 11.

The spacers shown in FIGS. 1a to 5f are preferably made of plastic, from which profile bars with the cross sections shown are extruded. The spacers shown in FIGS. 6a to 6d can be made from conventional materials metal hollow profile bars or plastic. The spacer shown in Figures 7a to 7c can also be made of plastic or metal.

If you manufacture frame-shaped spacers 4 with curved corners, the circumference of which is greater than the length of a single profile bar, then the task arises of connecting two profile bars linearly to one another. A further connection must be made where, after the spacer 4 has been bent, two profile rod ends meet opposite one another. FIG. 8a shows a possibility of connecting two profile rod ends 37 and 38 to one another without a separate plug connector. For this purpose, the profile bar ends 37 and 38, which are initially cut off butt-cut, are shaped, in particular machined:

A wedge-shaped projection 39, which has an undercut 40, is cut out of one profile rod end 38, for example by milling, from each leg 11. The undercut 40 delimits two recesses 41 and 42, which in turn delimit a neck of the wedge-shaped projection 39. On the other professional bar 37, two recesses 43 are matched to the keu-shaped projections 39, which are wedge-shaped in the same way as the projections 39, but somewhat longer. The recesses 43 are undercut in a manner corresponding to the keu-shaped projections 39. This makes it possible to plug the two profile rod ends 37 and 38 into one another by inserting the wedge-shaped projections 39 into the recesses 37 and snapping them into them in a form-fitting manner, thereby creating the connection shown in FIG. 8a. The gap between the two profile rod ends 37 and 38 present at the butt joint is then covered by coating with a drying agent-containing primary sealing compound 18 in its full width and cannot lead to a leak in the insulating glass pane. These and other possibilities for the inexact connection of two profile rod ends are disclosed in DE 102004005 471 AI, to which reference is hereby made.

FIG. 8b shows a corner, as in a spacer 4, which is formed from a profile bar with the cross-sectional shape shown in FIGS. 1a to 1d and FIG. 8a can be trained. The principle of forming the corner is the same as that shown in Figure 5d:

At the location provided for the corner, two recesses 31, 32 are formed in the profile bar, which delimit two projections 33, 34, which engage in the recesses 31, 32 when the corner is bent, and the two legs which start from the corner, lock at a right angle. Such corner designs are described in detail in DE 10 2004 005 354 AI, to which reference is hereby made for further details.

Figure 8b shows the spacer 4 uncoated to make the formation of the corner clearer. In fact, the spacer 4 is formed in such a way that the recesses 31, 32 and the projections 33, 34 delimited by them are first formed by machining in a straight professional rod at the control units provided for the corners. Then the still straight profile bar is coated on its full length or almost on its full length with a drying sealant-containing primary sealing compound 18, as shown in FIG. 8c. It is also preferably already coated with a secondary sealing compound 20. In this case, the coating with the primary sealant 18 containing the desiccant is preferably thinned out in the area of the corner, as shown in FIG. 8c, so that it does not fold unsightly when the corner is bent (FIGS. 8d and 8e). FIG. 8f shows an oblique view of a section of the spacer 4 in the region of a curved corner, which is coated with both a primary sealant 18 containing a desiccant and a secondary sealant 20.

As FIG. 8g shows, 4 rungs 22 can be inserted into such a spacer. For this purpose, a marking rank 45 is attached to the steps on which a rung 22 is anchored. This can be a groove that is pressed into the top of the dry sealant-containing primary sealing compound 18, or a marking printed on, for example, with an inkjet printer. The rung 22 can be anchored to this step by hand, as described above. The nozzle head 44 shown in FIGS. 9 and 10 has a housing 45 in which a rotary slide 48 is mounted, in which a feed line 49 for a dry-medium primary sealant runs. The rotary valve 48 is arranged closely above the mouth 46 of the nozzle head 44. In the open control of the nozzle head 44 shown in FIG. 10, the feed line 49 has a connection to the mouth 46 of the nozzle head 44 via an opening 50 of the rotary slide 48. The mouth 46 has a contour 51 which determines the contour of the primary sealant 18 containing the drying agent on the profile rod , The real width of the mouth 46 can be adapted by means of a slider 47 to differently wide profile bars. When the nozzle head 44 is stationary, the profile bar can be pushed across the mouth 46 with a horizontal conveyor 52, whereby it is coated in a continuous process.

The nozzle head 44 shown in FIG. 11 differs from the nozzle head shown in FIGS. 9 and 10 in that the mouth 46 of the nozzle is supplied by three channels 53, 54 and 55, of which the outer channels 53 and 54 against the two flanks 11 of the profile rod are directed, whereas a central channel 55 is directed against the inside of the professional rod, which faces the interior 17 after installation in an insulating glass pane. The channels 53 and 54 are fed from a common feed line 49, whereas the channel 55 is fed through a separate feed line, which is parallel to the feed line 49 and runs parallel to the feed line 49 in the rotary valve 48 and is behind the drawing plane in FIG. 11 and therefore not visible is.

Channels 53 and 54 can be used to supply a desiccant-free primary sealant, whereas channel 55 can be used to supply a dry-matter sealant, which - apart from the desiccant - can consist of the same material as the primary sealant, but also different ones. pasty, adhesive mass can be. With such a coextrusion nozzle, a three-sided coating of the profile bar is achieved, as shown in FIG. 12, which is essentially free of drying agents on the flanks 11, but on the side 12 facing the later interior 17 of the insulating glass pane contains a drying agent. A secondary sealing compound is not provided on the flanks 11. That's why it contains there applied primary sealing compound 19 contains reactive constituents which lead to a sufficiently firm cross-linking of the sealing compound and to a connection with the glass panes 2 and 3 on one side and the spacer 4 on the other side. The primary sealant 19 may be a reactive hot melt, for example. The desiccant-containing mass 18 can be, for example, a sealant based on polyisobutylene. There is an intimate interlocking between the desiccant-containing mass 18 and the primary sealing mass 19, since the different masses are still brought together in the mouth 46 of the nozzle head 44. In this way, the spacers 4 can also be coated in the examples which are shown in FIGS. 1 a to 5 c and 6 a to 7 c.

The use of a uniform sealant instead of a combination of a primary sealant and a secondary sealant is always possible if the uniform sealant enables both a sufficient seal against the diffusion of water vapor - as with a conventional primary sealant such as e.g. a polyisobutylene - as well as a sufficiently tensile and pressure-resistant connection of the glass panes to one another and / or to the spacer - as with a conventional secondary sealing compound, e.g. a polysulfide (Thiokol). The desiccant, in particular in powder form, can also be stored in such a uniform sealing compound, so that only a single compound can be used for the entire coating of the spacer. It goes without saying that the different possibilities of coating a spacer can be used with the different profiles, in particular with the profiles according to FIGS. 1a to 7d.

FIGS. 14 and 15 show an exemplary embodiment, which differs from the exemplary embodiment in FIGS. 12 and 13 in that the spacer 4 is coated on three sides uniformly with the same material, which has both the properties of a primary sealing compound and the crosslinking, setting constituent has, which lead to a sufficiently firm bond of the insulating glass pane. The material also contains a desiccant, preferably in powder form, throughout. To such a coating of the To produce spacer 4, a nozzle head 44 is required, the mouth 46 of which has the contour shown in FIG. 11 and is fed from a single feed line 49, as shown in FIG. 16 and FIG. 17.

In the case of the profiled bars, which are coated according to FIGS. 9 to 17, an uncoated strip 56 preferably remains on the flanks 11 in the immediate vicinity of the outside 6 of the base 5. As shown in FIG. 18, these strips 56 can be used with pairs of clamping jaws 57 which clamp the professional rod, and one can connect two profile rod ends to be connected to one another by bringing the two pairs of clamping jaws 57 together. FIG. 20 also shows that a notch-like recess 58 is provided on the butt joint, which extends over the entire width of the spacer profile on the inside 12 to be coated. In the area of this recess 58, the joint is subsequently sealed by injecting sealing compound in order to obtain a complete and tight coating in the longitudinal direction of the professional bar. This can be done by means of a nozzle head, which in principle has the same structure as the nozzle heads shown in FIGS. 9, 10, 11, 16 and 17, but the mouth can be narrowed according to the gap still to be fired , If the profile rod is moved in the mouth of the nozzle before it is opened and the profile rod is released, the desired contour of the sealing compound can also be obtained on the butt plug.

In order not to make the impact control visible in the insulating glass pane, it is preferably covered with a badge 59, as is shown by way of example in FIG. 19. In the example shown, the badge 59 has two extensions 60 on its back, which can be inserted through the desiccant-containing mass 18 into the channel 9 below and thereby anchored. At the same time, the extensions 60 prevent the two plugged-together ends of the professional rod from shifting against one another when further manipulation with the frame-shaped spacer 4. If such a badge 59 is undesirable, a lateral offset between the two profile rod ends can also be prevented by inserting a key 61 into the groove 9, as in FIG. 20 dargesteüt. This key 61 is then covered by the dry medium mass 18.

The KeÜ 61 and the extensions 60 of the badge 59 can also have barbs that resist pulling apart the profile rod ends. In such a case, the profile rod ends do not have to engage in a complementary manner, as is shown, for example, in FIG. 8a, and instead they could collide with one another. This is suitable to simplify the connection of the profile rod ends.

Alternatively, it can be advantageous to make the extensions on the badge 59 so low that they cannot penetrate the dry medium mass 18. This is particularly beneficial for preventing water vapor diffusion.

FIGS. 21 to 23 show a modified embodiment and arrangement of nozzle heads 44, 62, 63, with which two differently composed masses are applied in Kσ-extrusion to a hollow profi bar, from which a spacer 4 is then formed. In contrast to the exemplary embodiment according to FIG. 11, in which the two different masses emerge from a single nozzle head, which has three outlets into which three channels 53, 54, 55 open, FIG. 21 shows a first nozzle head 44, which serves one to apply desiccant-containing composition 18 to a hollow profile rod, as well as a second nozzle head 62 and a third nozzle head 63, which face each other and have nozzles 64 and 65 directed against the flanks 11, through which a secondary sealing compound 20 can be applied to the flanks 11. The hollow section rod moves on a horizontal conveyor 52, which moves in the direction of the nozzle 66 and first moves the hollow section rod past the first nozzle head 44 and then between the two nozzles 64 and 65, which is at a distance of, for example, a few centimeters or a few can be ten centimeters from the first nozzle head 44. The desiccant-containing mass 18 and the secondary sealing mass 20 are applied in this way overlapping one another on the hollow profile rod, the coating of the flanks 11 with the secondary sealing mass 20 of the coating of the later inside 12 of the spacer 4 with the mass containing desiccant 18 again. Since the secondary sealing compound 20 and the dry middle compound 18 normally have different consistency and toughness, application can be carried out and controlled more easily with separate nozzles 44, 62, 63 than with a multiple nozzle as in FIG. 11.

The structure of the first nozzle head 44 in FIG. 21 and FIG. 22 corresponds in principle to the structure of the nozzle head 44 in FIG. 9, so that reference can be made to the description of FIG. 9. The difference from FIG. 9 essentially consists in the fact that the contour 51 of the mouth 46 of the first nozzle head 44 has been adapted to the other shape of the hollow profile rod. In the exemplary embodiment in FIGS. 21 to 23, the hollow profile rod is made of plastic or metal and has a flat base 5 with lateral projections 8. On the base 5 there are flanks 11 which are connected by a wall which in the later spacer has its inside 12 büdet. The flanks 11 are perpendicular to the base 5 and in their upper region form a channel 9 on both sides of the hollow profile rod, which creates an undercut into which the desiccant-containing mass 18 is extruded from above, see FIG. 21 and FIG 22. The secondary sealing compound 20 is applied directly to the dry-middle compound 18 on the flanks 8.

In the second nozzle head 62 and in the third nozzle head 63 there is in each case a shut-off slide valve 67, which opens or closes a supply line to the nozzles 64 and 65 of each of the nozzle heads 62, 63 and fed by a pump, as desired. The projections 8 of the base 5 limit the application of the secondary sealing compound 20 downwards.

The dry medium mass 18 and the secondary sealing mass 20 can be supplied and applied in a quantity-controlled manner as a function of the speed of the horizontal conveyor 52. Such regulations are known in the field of insulated glass production. The two nozzle heads 62 and 63 can be moved towards and away from one another in order to be able to control the profile bar and to adapt them to different profile widths.

If the nozzles 64 and 65 apply a secondary sealing compound 20, which only brings about the firm bond in the insulating glass pane, but does not provide the required water vapor barrier, then the desiccant-containing compound 18 must also perform the function of a primary sealing compound, which brings about the required water-vapor tightness. In this case, the mass in which the desiccant is stored can be a polyisobutylene or a TPS® material. Known TPS materials are also based on a polyisobutylene. A thiokol, a polyurethane or, for example, also a reactive hot-melt which crosslinks after application can be used as the secondary sealing compound 20.

LIST OF REFERENCE NUMBERS

1. Insulating glass pane

2. Glass pane

3. Glass pane 4. Spacer

5th base

6. Outside of 5

7. Inside of 5

8. Projections 9. Channel

10. Undercut

11. Flanks, legs of the spacer

12. Inside of the spacer

13. Partition wall 14. Hohüaum

15. concave surface area

16th paragraph

17. Interior of the insulating glass pane

18. dry middle mass 18a. Continuation of l8

19. Primary sealant

20. secondary sealant

21. Flow arrows

22. rung 23. end piece

24th plate

25. first continuation of 23

26. second continuation of 23

27. Heads of 5 28. Ribs

29. Edge joint 30. concave, groove-like surface

31. Recess

32. recess

33rd lead 34th lead

35. recess

36. flat surface area

37. Profile end

38. Profilstabeήde 39. wedge-shaped projection

40th hip cut

41. recess

42. recess

43. recess 44. nozzle head

45. Housing

46th mouth

47. Slider

48. rotary valve 49. supply line

50. Opening the rotary valve

51. Contour of 46

52. Horizontal conveyor

53. channels 54. channels

55. channels

56. uncoated strip

57. Jaws

58. notch-like recess 59. badge

60th continuation

61. KeÜ 62. 2. Nozzle head

63. 3. Nozzle head

64. Nozzle

65. Nozzle

66. Phew

67. Gate valve

Claims

Expectations:

1. ISO glass pane, in which two individual glass panes (2, 3) are held at a distance by a spacer (4) formed from a profile bar, which has an inside (12), an outside (6) and two flanks (11), in Connection with the spacer (4) a desiccant is provided, and on both sides of the spacer (4) between this and the two glass panes (2, 3) a gap is provided, which is sealed by a primary sealing compound (19), which on Spacer (4) and adheres to the glass panes (2, 3), characterized in that a mass (18) which contains a desiccant, in addition to the primary sealing mass (19) sealing the two gaps, on the interior (17) of the insulating glass pane facing side (12) of the spacer (4) (hereinafter also referred to as the inside 12) is arranged.

2. Insulating glass pane according spoke 1, characterized in that the mass (18) containing the desiccant to the two gaps sealing primary sealing compound (19) on the inside (17) of the insulating glass side (12) of the spacer (4) is arranged in such a way that it covers the inside (12), insofar as it is not already covered by the primary sealing compound (19).

3. ISO glass pane according to spoke 1 or 2, characterized in that the mass (18) adheres to the spacer (4).

4. Insulated glass pane according to spoke 1, 2 or 3, characterized in that the mass (18) adheres to the primary sealing compound (19).

5. Insulating glass pane according to one of the preceding claims, characterized in that the mass (18) containing the desiccant is interlocked with the spacer (4).

6. insulating glass pane according to claim 5, characterized in that the positive connection between the desiccant-containing mass (18) and the spacer (4) at least at the transition from the inside (12) to the flanks (11) of the spacer (4).

7. Insulated glass pane according to spoke 5 or 6, characterized in that the profile bar is undercut along its entire length to form the positive connection.

8. Insulated glass according to spoke 7, characterized in that the positive connection between the spacer (4) and the desiccant-containing mass (18) is designed in the manner of a dovetail connection.

9. ISO glass pane according to one of the preceding claims, characterized in that the primary sealing compound (19) in the gap between the flanks (11) and the glass panes (2, 3) is free of desiccant or has a lower concentration of desiccant than the desiccant containing Mass (18) on the inside (12) of the spacer (4) facing the interior (17) of the insulating glass pane.

10. ISO glass pane according to one of the preceding claims, characterized in that a curing secondary sealing compound (20) is provided, which further out than the primary sealing compound (19) the two glass panes (2, 3) connects directly or indirectly to the spacer (4) and creates a permanent and stable bond between the glass panes (2,3).

11. Insulating glass pane according to claim 10, characterized in that two separate strands of the secondary sealing compound (20) are provided, of which one strand the one glass pane (2) and the other strand the other glass pane (3) with the spacer (4th ) connects.

12. Insulated glass pane according to spoke 11, characterized in that the secondary sealing compound (20) is provided only in the gap between the flanks (11) of the spacer (4) and the glass pane (2, 3) facing the flank (11).

13. ISO glass pane according to claim 11 or 12, characterized in that the flanks (11) have a concave outer surface (15) in cross section.

14. Insulated glass pane according to claim 13, characterized in that the concave outer surface (15) is delimited on both sides by a flat surface area, the primary sealing compound (19) extending to one of the flat surface areas which is on the inside (12) of the spacer (4) adjoins.

15. ISO glass pane according to one of the preceding claims, characterized in that the profile rod consists of a plastic.

16. Insulating glass pane according to one of the preceding claims, characterized in that the profile rod is a rectangle in cross section.

17. Insulated glass according to spoke 16, characterized in that the width of the professional rod is greater than its height.

18. Insulated glass pane according to spoke 15, 16 or 17, characterized in that the profi bar is hollow and in particular has a box profile.

19. Insulated glass pane according to spoke 15, 16 or 17, characterized in that the profile bar has a Voüprofil.

20. Insulating glass pane according spoke 19, characterized in that the profile rod consists of a foam.

21. Insulated glass pane according to one of claims 1 to 15, characterized in that the profile bar has a U-profile in cross section, the back of which bends the inside (12) of the spacer (4).

22. Isoüer glass pane according to one of claims 1 to 15, characterized in that the profile bar has a U-profile or a C-profile in cross section, the back of which bends the outside (6) of the spacer (4)

23. Insulated glass pane according to one of claims 1 to 15, characterized in that the profile bar has a plurality of chambers in cross section, of which a chamber (9) located in the middle between the flanks (11) on the inside (12) is at least in steps, preferably at full length, is open to the inside (12), the opening (s) being covered by the mass (18) containing the desiccant.

24. Insulated glass pane according to one of claims 1 to 15, characterized in that the profile rod is hollow and on its inside (12) is open in sections, the openings being covered by the mass (18) containing the desiccant.

25. Insulated glass pane according to one of the preceding claims, in which at least one rung (22) is arranged and anchored with end pieces (23) on the spacer (4), characterized in that the end pieces (23) are formed by the mass (18) containing the desiccant. engage in a recess or opening of the spacer (4) behind it.

26. Insulated glass pane according to spoke 25, characterized in that the recess or opening in the spacer (4) is closely adapted to the width of the end piece (23) at least transversely to the longitudinal direction of the profile bar.

27. Insulated glass pane according to one of the preceding claims, characterized in that the outside (6) of the spacer (4) is flush with the edge of the glass panes (2.3).

28. Insulating glass pane according to spoke 27, characterized in that the outer side (6) of the spacer (4) on both sides over the flanks (11) of the spacer (4) has projections (27), which the edge of the two glass panes (3.4 ) cover.

29. Insulating glass pane according to spoke 27, characterized in that the secondary sealing compound (20) extends into the area between the projections (27) of the spacer (4) and the edge of the glass panes (2, 3).

30. Isoüer glass pane according to one of the preceding claims, characterized in that the spacer (4) has corners which are bent by bending the profile bar.

31. Insulated glass pane according to claim 30, characterized in that the profile bar has at least one recess (31, 32, 35) extending over the entire width of the profile bar at a corner of the frame-shaped spacer (4).

32. Isoüer glass pane according to claim 31, characterized in that the at least one recess (35) is located on the outside (6).

33. Isoüer glass pane according to claim 31, characterized in that at the corner two recesses (31, 32) delimit two projections (33, 34) which mutually interlock after bending the corner and the legs (11) of the spacer which meet at the corner (4) lock at a certain angle.

34. Method for producing an insulating glass pane with the features according to the above claims by (a) providing a profile bar,

(b) applying a mass (18) containing a desiccant to the profile bar, to be precise on the later inside (12) of the spacer (4), and applying a primary sealing compound (19) to the flanks (11) of the profile bar so that the primary sealant (19) and the desiccant-containing mass (18) adjoin each other and the desiccant-containing mass (18) covers the inside (12) of the spacer (4) insofar as the primary sealant (19) not covering it,

(c) shaping the coated profile rod into a frame-shaped building, (d) shooting the frame-shaped building to a spacer (4) by connecting the ends of the profiled bar to one another,

(e) attaching the spacer (4) to a first glass pane (2) so that it adheres to the edge of the first glass pane (2), (f) attaching a second glass pane (3) paraüel to the first glass pane ( 2) to the spacer (4) so that it also adheres to the second glass pane (3),

(g) compressing the two glass panes (2, 3) to the thickness specified for the insulating glass pane,

(h) optionally connecting the spacer (4) to the two glass panes (2, 3) by applying a secondary sealing compound (20), the order of application of the primary sealing compound (19) and the desiccant-containing compound (18) being interchanged or the primary sealing compound (19) and the desiccant-containing compound (18) can be applied simultaneously or overlapping one another at times.

35. The method according to spoke 34, characterized in that between the spacer (4) and the first glass pane (2), a first strand and between the spacer (4) and the second glass pane (3), a second strand made of the secondary sealing compound (20 ) is applied, which is separated from the first strand.

36. Method for the manufacture of an insulating glass pane with the features according to one of claims 1 to 33

(a) preparing a profile bar,

(bl) applying a mass (18), which contains a desiccant, to the profile bar, to be precise on the later inside (12) of the spacer (4), and applying a primary sealing compound (19) to the flanks (11) of the profile bar - Bes, so that the primary sealing compound (19) and the desiccant-containing mass (18) close to each other and the desiccant-containing mass (18) covers the inside (12) of the spacer (4) insofar as the primary sealing compound (19) does not cover it, (b2) applying a secondary sealing compound (20) to the flanks (11) of the professional rod, 5 (c) shapes of the coated profile bar to form a frame-shaped building, (d) closing the frame-shaped building to form a spacer (4) by connecting the ends of the profile bar to one another, (e) attaching the spacer (4) to a first glass pane (2) so that it fits into the vicinity of the edge of the first glass pane (2) adheres to it, 0 (f) attaching a second glass pane (3) to the spacer (4) in a manner parallel to the first glass pane (2), so that it also adheres to the second glass pane (3) adheres, (g) compressing the two glass panes (2, 3) to the thickness specified for the insulating glass pane, the order of application of the primary and secondary sealing compound 15 (19, 20) and the compound containing the desiccant (18) be exchanged or the application can be carried out at the same time or overlapping.

37. Method for the manufacture of an insulating glass pane, in which two glass panes (2, 3) are firmly glued and sealed to one another with the interposition of a frame-shaped spacer (4) by means of at least one sealing compound (19, 20)

! 0 (a) Manufacture of a frame-shaped spacer (4) from one or more hollow profile bars, which have a base (5), two flanks (11) starting from the base (5) and a side (12) which later becomes the interior of the Facing the insulating glass pane, (b) applying a strand of a substance (18) containing a desiccant to the side (12) facing the future interior of the insulating glass pane, (c) applying the entire at least one sealing compound (19, 20) to the Flanks (11) of the one or more hollow profile bars of the spacer (4) and (d) gluing the spacer (4) to the two glass panes (2, 3), the order of steps (a), (b) and (c) being interchangeable.

38. Method for the manufacture of an insulating glass pane, in which two glass panes (2, 3) are firmly bonded to one another and sealed by interposing a frame-shaped spacer (4) by means of at least one sealing compound (19, 20)

(a) one or more hollow profile bars are provided, which have a base (5), two flanks (11) starting from the base (5) and a side (12) which later faces the interior of the insulating glass pane, in a straight line arrangement,

(b) applying a strand of a mass (18) containing a desiccant to the side (12) facing the later interior of the insulating glass pane

(c) applying at least one sealing compound (19, 20) to the flanks (11) of the one or more hollow profile bars,

(d) producing a frame-shaped spacer (4) from the one or more coated hollow profile bars, and (e) gluing the spacer (4) to the two glass panes (2, 3), the sequence of steps (b) and (c ) can be exchanged.

39. The method according to any one of claims 34 to 38, characterized in that a hollow profile rod with a box-shaped hollow profile is used.

40. Method according to one of the claims 34 to 39, characterized in that a spacer (4) is used, which at least partially consists of a plastic.

41. The method according spoke 40, characterized in that the spacer (4) is formed from one or more profile bars, which are extruded from plastic.

42. Method according to one of the claims 34 to 41, characterized in that a plastic with adhesive property is used as the mass (18) in which the desiccant is incorporated.

43. The method according to spoke 42, characterized in that a thermoplastic is used as the mass (18) in which the desiccant is incorporated.

44. The method according to spoke 42, characterized in that a foam is used as the mass (18) in which the desiccant is stored.

45. Method according to one of the claims 34 to 44, characterized in that a sealing compound is used for the mass (18) containing the desiccant, which effectively counteracts the penetration of water vapor into the interior (17) of the insulating glass pane, in particular on the basis of Polyisobutylene or other primary sealing compounds used for insulating glass panes.

46. Method according to one of the claims 34 to 45, characterized in that the primary sealing compound (19) applied to the flanks (11) also contains a drying agent.

47. Method according to spoke 46, characterized in that the primary sealing compound (19) applied to the flanks (11) reduces the desiccant Concentration than the mass (18) applied to the later inside (12) of the spacer (4).

48. The method according to any one of claims 34 to 47, characterized in that the primary sealant (19) and / or the desiccant-containing mass (18) contain a setting component.

49. The method according to any one of claims 34 to 48, characterized in that the secondary sealing compound (20) is applied adjacent to the primary sealing compound (19).

50. The method according to any one of claims 34 to 49, characterized in that the secondary sealant (20) of the primary sealant (19) is trailing, but overlapping from time to time, or applied simultaneously.

51. The method according to spoke 49 or 50, characterized in that the primary sealing compound (19) and the secondary sealing compound (20) are applied in such a way that they protrude furthest from the flanks (11) where they touch.

52. The method according to claim 50, characterized in that the primary sealing compound (19) and the secondary sealing compound (20) are applied in such a way that the primary sealing compound (19) projects over or over the secondary sealing compound (20) on the shock control between the two Butt joint is applied as thickly as the secondary sealant.

53. Method according to one of the claims 34 to 52, characterized in that eventual machining of the profile bar is carried out before it is coated.

54. Method according to one of the claims 34 to 53, characterized in that the profile bar is coated by means of a nozzle (44) which, with a given undersized mouth (46), the inside (12) of the profile bar and at least also an adjacent one Strip of its flanks (11) covers.

55. The method according to spoke 54, characterized in that a width-adjustable nozzle (44) is used.

56. Method according to spoke 54 or 55, characterized in that the mass (18) containing the desiccant and the primary sealing mass (19) are brought together in the nozzle (44).

57. The method according to claim 56, characterized in that the primary and the secondary sealing compound (19, 20) are also brought together in the nozzle (44).

58. The method according to any one of claims 34 to 57, characterized in that the profiled rod is coated at its ends only after they have been connected to one another.

59. The method according to spoke 58, characterized in that a wedge-shaped or notch-like recess (58) extending transversely to the longitudinal direction of the profiled rod is provided and subsequently sealed on the connecting piece of the profiled rod on the inwardly directed side of the profiled rod.

60. The method according to claim 58 or 59, characterized in that the connecting control on the inward-facing side (12) of the profile bar is covered with a badge (59).

61. The method according to claim 60, characterized in that the badge (59) has on its underside or several projections (60) which are pressed into the mass containing the desiccant (18).

62. The method according to claim 61, characterized in that the extensions (60) are inserted into a recess (9) or opening in the profiled rod which is covered by the mass (18) containing the powder.

63. Method according to one of the claims 34 to 62 for producing an insulating glass pane (1), in which at least one rung (22) is installed, which with an end piece (23) in a recess (9) or opening on the inside (12) of the spacer (4), characterized in that the stand on which the rung (22) is to be attached is marked on the profile bar or on the inside (12) of the mass (18) containing the desiccant and on the marked step an end piece (23) is inserted through the mass (18) into the recess (9) or opening of the spacer (4) located under the mass (18).

64. Method according to one of the claims 34 to 63, characterized in that the primary sealing compound (19) chosen is one which is particularly suitable for sealing the insulating glass pane against the ingress of water vapor, in particular a thermoplastic polyisobutylene.

5. The method according to any of claims 34 to 64, characterized in that the secondary sealing compound (20) chosen is one which has particular suitability for permanently firmly connecting the glass panes (2, 3), in particular a hardening plastic compound, such as For example a polyurethane or a thiokol (polysulfide), a reactive polyisobutylene, a suikon resin or a hot-melt adhesive (hot-melt).