EP1844209B1 - Insulating glass pane and method for the production thereof - Google Patents

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 ). This invention provides that a compound ( 18 ), which contains a drying agent is supplies 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. Said compound ( 18 ) is applies 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

The invention aims to improve an insulating glass with the features specified in the preamble of claim 1. Such an insulating glass pane is the subject of DE 10 2004 020 883.2 ,

In such a glass pane, two individual glass panes are held at a distance by a spacer formed from a profile bar and adhesively bonded to it by means of a sealing compound, hereinafter also referred to as primary sealing compound. The primary sealing compound adheres the two flanks of the spacer tightly to the two glass panes and seals the interior of the insulating glass against the ingress of water vapor and optionally - in the case of filled with a heavy gas insulating glass panes - against losses of heavy gas. As the primary sealing compound is mainly a polyisobutylene (butyl rubber) is in use, with which one can achieve a sufficient seal against the diffusion of water vapor. Polyisobutylenes are thermoplastic, adhesive substances. In addition to their task to seal the interior of the insulating glass pane, they also serve the task of producing a temporary bond between the spacer and the two glass panes when assembling an insulating glass pane, with which it is glued along its edge.

However, since polyisobutylenes are thermoplastic, they are not suitable for producing a permanently strong mechanical bond between the glass sheets of the insulating glass pane. Rather, it may be effected with a hardening secondary sealant by applying it between the glass sheets and covering either the entire outside of the spacer so that it extends uninterrupted from one glass sheet to the other glass sheet, or by two strands from the secondary one Sealant are formed, one of which connects a glass plate with the spacer and of which the second connects the other glass with the spacer, the outside of the spacer can remain completely or partially uncovered. As a secondary Sealants are hardening two-component plastics commonly used, in particular polysulfides, polyurethanes and silicones.

On the inside of the spacer is in the insulating glass, which is the subject of DE 10 2004 020 883 is applied, a mass containing a desiccant, in particular molecular sieves (zeolites). Preferably, this mass immediately and tightly adjoins the primary sealing compound, which seals the two gaps between the glass sheets and the spacer. The desiccant-containing mass absorbs moisture and binds it, which is present in the interior of the insulating glass, and captures from outside into the mass of water vapor diffusing and binds him. This mass preferably covers the interior of the insulating glass pane facing side of the spacer, as far as it is not already covered by primary sealing compound. To the outside, the primary sealing compound, preferably immediately adjacent to it, optionally adjoins a hardening secondary sealing compound which connects the two glass sheets directly or indirectly to one another and produces a permanent, mechanically strong bond between the glass sheets. In a direct connection, the secondary sealant extends from one glass sheet over the outside of the spacer to the other glass sheet. An indirect connection can be made by two separate strands of secondary sealing compound, one of which connects one glass pane and the other connects the other glass pane to the spacer.

If the primary sealant is selected so that it can permanently effect the mechanical bond of the glass panes required for an insulating glass pane, then a secondary sealant is not required. Such a sealant which meets the requirements of both a primary and a secondary sealant can be obtained, for example, by a blend of a thermoplastic component which has a good water vapor diffusion sealing effect with a durable curing component used for the solid mechanical composite provides.

It is known to divide the interior of an insulating glass pane with one or more rungs in order to obtain the appearance of a lattice window. In insulating glass panes, in which the spacer is formed from metallic hollow profile bars whose flanks are coated with a sealant and glued in this way with the two glass sheets of insulating glass, it is known to mechanically connect a prefabricated rung frame with the prefabricated metallic spacer frame. It is known to connect the rung frame with the metallic spacer frame in that from the outside of the spacer frame forth screws or nails are driven into end pieces made of plastic, which are provided at the ends of the rungs. However, this measure leads to a reduction in the quality of the insulating glass pane, because there is an increased risk for the diffusion of water vapor at the perforated points of the spacer frame.

From the EP 0 857 847 B1 is an insulating glass pane is known which has a thermoplastic spacer which is extruded directly onto one of the two glass sheets of the insulating glass pane. Only then can a prefabricated rung frame be positioned in the area surrounded by the spacer and thereby connected to the spacer, that on the rungs slidably arranged end pieces are moved against the spacer until they engage in this. Since the spacer is still soft and sticky in this phase, only a very small force may be exerted on the spacer so as not to deform it. Therefore, the reveals EP 0 857 847 B1 Cutting on the end pieces, which can easily penetrate into the soft spacer. Positioning the rung frame in the area surrounded by the spacer is difficult. An incorrect positioning deforms the still soft spacer and can not be undone. The risk of incorrect positioning is great, because rung frames are labile, mobile structures that are only stabilized by the connection with the spacer.

From the GB 2 242 699 A It is known, in an insulating glass pane with a spacer made of thermoplastic material, which is prefabricated as a strand and may include a metal strip for stiffening to use a rung frame, which is glued by means of foot parts with the inside of the spacer. The foot portions are slidably mounted at the ends of the rungs and have a foot plate which is moved against and glued to the inside of the spacer after the rung frame has been positioned in the space bounded by the spacer. Also, this operation is complicated and cumbersome for the reasons mentioned above and the bonding is difficult, because only with little pressure on the spacer can be acted on, because this is otherwise deformed, in particular tilts.

The present invention has for its object to provide an insulating glass, which is particularly suitable while avoiding the aforementioned disadvantages and without jeopardizing the tightness of the insulating glass for the installation of sprouts.

This object is achieved by insulating glass with the given in claim 1 features. Methods for producing such an insulating glass pane are given in claims 20 and 21. Advantageous developments of the invention are the subject of the dependent claims.

In the insulating glass according to the invention two individual glass sheets are held by a spacer formed from a profile bar at a distance, which has a the interior of the insulating glass bounding wall with an inner side, an inner side facing away from the outside and two flanks, the inside and the outside of the profile bar of extending one flank to the opposite flank,
a desiccant is provided in connection with the spacer,
on both sides of the spacer between this and the two glass sheets, a gap is provided, which is sealed by a sealing compound which adheres to the spacer and the glass sheets, and
one or more rungs inserted into the spacer and anchored directly or indirectly on or in a adhering to the inside of the spacer mass, in particular sealant, without this up to the inside of the To penetrate profile bar, wherein the mass preferably contains a desiccant.

This has significant advantages:

The sealant, which is preferably thermoplastic, can be applied to the spacer in a soft and sticky state and does not need to make any contribution to the dimensional stability of the spacer since it is supported by the spacer formed from a profile bar.

When anchoring the rungs on the spacer can - unlike a spacer, which is formed by placing a thermoplastic strand on a glass, a much higher force to be exercised without adversely affecting the shape of the spacer, because the sealant, which for anchoring the Sprouts is used is well supported by the spacer formed from a profile bar.

Since the spacer is formed from a profile bar, it can be prefabricated because it has enough inherent stability to be handled independently of a glass sheet.

One or more rungs can be connected to the spacer while it is not yet on a glass sheet.

Separate fasteners such as screws or nails, which are otherwise used for attaching sprouts in metallic spacers can be omitted. The sealant can serve directly as a fastener.

The sealant also provides a significant contribution to the sealing and thus the life of the insulating glass pane, and in particular when it extends, as preferred, from one glass to the other glass over the entire inside of the spacer.

The anchoring of the sprouts can be done solely by the fact that the sprouts ends or separate foot parts, which are provided for the sprouts ends are pressed onto the sealant or pressed into it, but without penetrating them to the inside of the profile bar, so that the sealing effect of Sealant is retained.

The foot parts can be formed over a large area and pressed firmly into the sealant, so that there is a good anchorage both by the large-area connection and by the strong impression. The support of Sealant through the profile bar, which can be assumed to be rigid, makes this possible. Since the rungs can be installed in the spacer, as long as it is not glued to a glass pane, the spacer can always be supported on its full length on one of its outer sides by a solid base, while foot parts for the rungs are pressed onto the sealant. The pressure can be so great that even if the foot parts have a plate with which they are placed on the sealant, they can be pressed into it to such an extent that it not only produces an adhesive bond but also a positive connection between the sealant and the foot part comes. Such a positive connection can be facilitated by the fact that the plate recesses and / or apertures, which receive displaced sealant.

The foot parts have expediently a protruding from this connection device. This connecting device establishes the connection to the usually hollow rung. For this purpose, inserted in the rung expediently an adapter which is fixed in the hollow end of the rung and receives the protruding from the foot part connecting device, which may be a rod in the simplest case, which is frictionally received by the adapter. A connection of the foot part with the adapter by plugging and / or Klippsen is preferred. The foot part preferably has a plate from which protrudes the connecting means, which is located on the side of the plate which faces away from the sealant.

The use of an adapter has the advantage that it can always be designed the same for rungs with different cross-sectional shape with respect to the receptacle for the protruding from the plate of the foot connection means. You can then use the same foot parts for different sprouts, which is favorable for a low-cost and efficient frame production. The connecting means, which has the adapter for connection to the foot part, can be designed in many ways. You can intervene in a formed on the foot part connecting device. But it is also possible that a formed on the foot part connecting device engages in the adapter, which to this purpose may have a recess as a connecting means; this possibility is preferred.

Particularly when the sealing compound applied to the inside of the spacer extends from the primary sealing compound on one flank of the spacer to the primary sealing compound on the other flank, any leaks in the spacer do not or less adversely affect the sealing of the insulating glass pane. In the case of insulating glass panes of conventional construction, this is different: there any leaks, for example pores or cracks or gaps, which can occur in particular in the region of the corners and in the area of the joint where the ends of a profile bar from which the spacer is formed, have an effect. Disastrous, because conventional secondary sealants, which are the only ones in the art to mask such leaks in the spacer, are unable to prevent the ingress of water vapor as would be required by a perennial To reach life of the insulating glass pane.

If the desiccant-containing sealant is applied to the inside of the profile bar, the quality requirements for profile bars, from which the spacers are formed, can be reduced because the profile bars only have to fulfill a mechanical task, namely the glass panes of the insulating glass pane under their typical operating conditions and loads to hold at their predetermined distance and to connect with one or more sealing or sealing compounds. It can therefore be used very inexpensive profile bars that can be optimized for minimal heat transfer. It can even be used foamed profile bars, which are characterized by a particularly good thermal insulation with good mechanical stability.

The invention is suitable for spacers made of different materials and in many different cross-sectional shapes. In particular, the invention can also be implemented with all conventional profile bars customary for frame-shaped spacers, even with the particularly frequently used box-shaped hollow sections made of steel or aluminum, but also with rectangular cross-section profiles, with a U-shaped or C-shaped metal or plastic profiles or metal profiles, as for example from DE 202 16 560 U1 are known. Particularly preferred is the use of hollow profile rods made of plastic, in particular of those having a hollow box profile.

The desiccant-containing sealant extending from one glass sheet to the other glass sheet can be selected to perform all the functions that the primary sealant performs in a conventional insulating glass sheet: it can form a water vapor barrier as a primary seal. It can also serve as an assembly aid in assembling the insulating glass pane by making a preliminary bond by gluing the spacer to the two glass panes. In addition, due to the incorporation of the desiccant still has the ability to absorb water vapor.

The primary sealing compound can also be the basis for the desiccant-containing sealant. The two masses can also agree. Thus, as a desiccant-containing sealant, the thermoplastic material with integrated desiccant matrix can be used, with which the thermoplastic spacer is formed in TPS® insulating glass panes. This material is also well suited for 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 desiccant-free sealing compound. It is also advantageous to use a primary sealing compound, for example a polyisobutylene, as a basis for the desiccant-containing sealant and to concentrate the desiccant in the interior of the insulating glass facing sealing compound, but the applied to the flanks of the spacer sealant but poor in desiccant or entirely form free of desiccant. The desiccant need not be distributed over the entire width and length of the inside of the profile bar in the desiccant-containing sealant. It can, for. B. concentrated on a strip which is narrower than the inside of the profile bar.

The profile bar can already be coated before it is formed into a frame-shaped spacer. This allows a very efficient linear operation with a minimum of mechanical effort.

The combination of desiccant-containing sealant and primary sealant is best applied in a width on the inside of the spacer that exceeds its width so that it extends to the flanks of the spacer so that it is compressed when the glass sheets are compressed and flat against the glass sheets liable. So that it comes to the compression, the desiccant-containing sealant on the inside of the spacer does not adhere to the entire surface. Preferably, the combination of desiccant-containing sealant and primary sealing compound is rather applied to the spacer or on a profile bar forming it, that it covers the inside, which faces the interior of the insulating glass pane, and also a strip of flanks. This ensures that the combination of desiccant-containing sealant and primary sealing compound on compression of the glass panes against the spacer gets enough pressure in any case in the flanks to glue gaplessly with the spacer edges on one side and with the glass panes on the other side. The combination of desiccant-containing sealant and primary sealant thus provides at least a preliminary bond between the glass sheets and the spacer. The composite is completed, if necessary, by a secondary sealant. This can extend from the one glass sheet without interruption on the outside of the spacer away to the other glass. In order to produce the required mechanical bond permanently, however, it is sufficient to connect the glass sheets with the secondary sealing compound only indirectly. For this purpose, one can bring them in the form of two separate strands, one of which connects the spacer with the one glass and the other strand the spacer with the other glass. This saves secondary sealant and reduces the heat transfer in the area of the spacer.

The profile bars from which the spacers are formed may be conventional metallic hollow profile bars. Preference is given to profile bars made of plastic, because in these sufficient mechanical stability, a low heat transfer coefficient and low cost can be realized simultaneously. It must be on the Appearance of the profile bar no consideration, since it is invisible anyway with built-in insulating glass.

As a cross-sectional shape of the profile bars from which the spacers are formed, especially box-shaped hollow profiles and solid profiles come into question. In the simplest case, the profile bar in cross section is a rectangle with the lowest possible height in order to keep the material costs and the heat transfer coefficient low. The minimum height depends on the fact that the legs of the spacer the required compressive strength and security against tilting is achieved and that applied to the edges of the profile bar primary sealant or the combination of desiccant-containing sealant and primary sealant sufficient resistance to the diffusion of Water vapor in the insulating glass provides. With a height of the profile bar of 4 mm achieves already useful results.

A convenient way to use a solid profile is to form the profile bar from a foamed plastic, which combines sufficient mechanical stability with low heat transfer coefficient and low cost.

Another possibility is to form the spacer from profiled bars, which have a U-profile in cross-section, but whose back is different from that of the US Pat. No. 6,470,561 B1 known prior art does not form the outside, but the inside of the spacer. If not only the primary sealing compound or a part of the combination of primary sealing compound and desiccant-containing sealing compound, but also the secondary sealing compound is applied to the flanks of such a U-shaped profile bar according to the invention, the interior of the U-profile on the outside of the spacer of secondary Sealant completely free. At most, at the corners of the spacer, a subsequent sealing of the insulating glass pane by introducing sealant, in particular primary sealant, may be required.

In order to find the places where the rungs are to be anchored easily, one can see the surface of the desiccant-containing mass at the Mark mark provided, for example, by an impression or by means of an inkjet printer.

In an insulating glass pane according to the invention with a rectangular outline, the spacer can be formed from four profile bars, which are connected to one another by rectangular angled connectors. It is then necessary to ensure that the primary sealing compound or a combination of desiccant-containing composition and primary sealing compound is applied without gaps at the corners. This is easier to achieve if the spacer has corners, which are not formed by connectors, but by bending a profile bar. This is therefore preferred for purposes of the invention. The bending of metallic hollow profiles or metallic U-profiles to a frame-shaped spacer for insulating glass panes is state of the art. But also plastic profile rods can be bent into a frame-shaped spacer. An example is in the DE 10 2004 005 356 A1 and in my filed on 18.01.2005 German patent application DE 10 2005 002 284 A1 entitled "Insulating Glass Spacer Spacer and Method of Making", to which reference is hereby made.

When the spacer is coated with a combination of desiccant-containing mass and primary sealant and assembled with inserted rungs, it is attached to a first glass sheet so that it adheres to it in the vicinity of the edge of the glass sheet. Then a second glass pane is attached to the spacer parallel to the first glass pane, so that it also adheres to the second glass pane. The thus assembled semi-finished insulating glass pane is pressed to its predetermined thickness. The attachment of the spacer can be done by hand or by machine. For this purpose, suitable devices are state of the art. The assembly and compression of the insulating glass pane are state of the art. Finally, when the insulating glass pane is only provisionally held together by the desiccant-containing composition and / or the primary sealing compound, the spacer is finally joined to the two glass panes by applying a hardening secondary sealing compound. This can be done as in the prior art so that the secondary sealing compound from the one glass sheet is applied without interruption to the other glass pane on the outside of the spacer, see for example DE 28 16 437 C2 , But it can also be done so that two separate strands of secondary sealing compound are injected into two joints, which are formed between the spacer and the two adjacent glass sheets, as for example in the US 5,439,716 A Finally, it is possible to apply a secondary sealing compound to the primary sealing compound adjacent to the two flanks of the hollow profile bar before inserting the separator between the two panes of glass.

Figur 1

zeigt einen Abschnitt eines Hohlprofilstabes in einer Schrägansicht, welcher zur Bildung einer rechtwinkligen Ecke eine Ausnehmung aufweist,

Figur 2

zeigt den Hohlprofilstab in einer Ansicht wie in Figur 1 nach dem Einsetzen eines Winkelstücks, welches sich noch in gestreckter Lage befindet,

Figur 3

zeigt den Hohlprofilstab aus Figur 2 in einer Schrägansicht nach dem Beschichten mit Dichtmasse und Klebemasse,

Figur 4

zeigt den Hohlprofilstab aus Figur 3 nach dem Falten einer rechtwinkligen Ecke,

Figur 5

zeigt den Eckwinkel aus Figur 2 in einer Seitenansicht, die

Figuren 6

bis 8 zeigen bei längs geschnittenem Hohlprofilstab, wie man das Winkelstück aus Figur 5 in den in Figur 1 dargestellten Hohlprofilstab einsetzen kann,

Figur 9

zeigt das Bilden einer Ecke in dem in Figur 8 dargestellten Hohlprofilstab,

Figur 10

zeigt schematisch in einem Längsschnitt durch den Hohlprofilstab einen rahmenförmigen Abstandhalter, welcher mit Winkelstücken gebildet worden ist,

Figur 11

zeigt einen Querschnitt durch einen beschichteten Hohlprofilstab gemäß Figur 3,

Figur 12

zeigt in einer Darstellung wie in Figur 11 den beschichteten Hohlprofilstab mit einem darauf verankerten Fußteil für eine Sprosse,

Figur 13

zeigt den mit einem Fußteil gemäß Figur 12 versehenen Abschnitt des Hohlprofilstabes in einer Seitenansicht,

Figur 14

zeigt den Abschnitt des Hohlprofilstabes mit dem Fußteil gemäß Figur 13 in einer Draufsicht,

Figur 15

zeigt den Abschnitt des Hohlprofilstabs aus Figur 14 in einer Schrägansicht während des Zuführens einer Sprosse,

Figur 16

zeigt einen Längsschnitt durch das untere Ende der Sprosse gemäß Figur 15,

Figur 17

zeigt einen Längsschnitt durch das untere Ende der Sprosse gemäß Figur 15 nach dem Aufstecken auf das Fußteil

Figur 18

zeigt einen Querschnitt durch einen Randabschnitt einer Isolierglasscheibe mit einem Abstandhalter gemäß Figur 11, und

Figur 19

zeigt eine Abwandlung der Figur 18.

Embodiments of the invention are illustrated in the accompanying drawings. Therein, identical or corresponding parts are designated by matching reference numerals. In describing the examples, further features and advantages of the invention will become apparent.

FIG. 1

shows a section of a hollow profile rod in an oblique view, which has a recess for forming a right-angled corner,

FIG. 2

shows the hollow profile bar in a view as in FIG. 1 after inserting an elbow, which is still in an extended position,

FIG. 3

shows the hollow profile bar FIG. 2 in an oblique view after coating with sealant and adhesive,

FIG. 4

shows the hollow profile bar FIG. 3 after folding a right-angled corner,

FIG. 5

shows the corner angle FIG. 2 in a side view, the

FIGS. 6

to 8 show with longitudinally cut hollow profile rod, how to make the elbow FIG. 5 in the in FIG. 1 can use inserted hollow profile bar,

FIG. 9

shows forming a corner in the FIG. 8 illustrated hollow profile bar,

FIG. 10

shows schematically in a longitudinal section through the hollow profile bar a frame-shaped spacer, which has been formed with elbows,

FIG. 11

shows a cross section through a coated hollow profile bar according to FIG. 3 .

FIG. 12

shows in a representation like in FIG. 11 the coated hollow profile bar with a foot part anchored thereon for a rung,

FIG. 13

shows that with a footboard according to FIG. 12 provided portion of the hollow profile bar in a side view,

FIG. 14

shows the section of the hollow section bar with the foot part according to FIG. 13 in a plan view,

FIG. 15

shows the section of the hollow profile bar FIG. 14 in an oblique view while feeding a rung,

FIG. 16

shows a longitudinal section through the lower end of the rung according to FIG. 15 .

FIG. 17

shows a longitudinal section through the lower end of the rung according to FIG. 15 after putting on the foot part

FIG. 18

shows a cross section through an edge portion of an insulating glass pane with a spacer according to FIG. 11 , and

FIG. 19

shows a modification of FIG. 18 ,

FIG. 1 shows a portion of a hollow profile bar 1 with an outer wall 2, with two flanks 3 and 4 and with an outer wall 2 parallel inner wall 5. At the transition from the flanks 3, 4 to the inner wall 5 is in each case a groove 6 and 7. The outer wall 2 is on both sides on the flanks 3, 4 via. Of the projecting part 8 of the outer wall 2 can either determine the distance between two glass panes, which are assembled with the interposition of a spacer formed from the hollow profile bar 1 to an insulating glass pane ( FIG. 19 ), or may serve to abut the edge of the glass sheets ( FIG. 18 ). Preferably, the hollow profile bar 1 is made of plastic and can be produced by extrusion.

At the points of the hollow profile bar 1, on which a corner is to be formed, the hollow profile bar 1 is provided with a recess 9 which extends from the inner wall 5 to the flanks 3 and 4. In the flanks 3 and 4 there are two mutually congruent opposing parts 10 of the recess 9, which have the shape of a rectangular miter cut, the top of which is equal to the inside of the outer wall 2 and determines the position of a bending axis 12, which bend the corner is. On both sides of the miter cuts in the flanks 3 and 4, the inner wall 5 is removed over a predetermined length in its entire width, including the grooves 6 and 7. The length of these lying in the inner wall 5 parts 11 of the recess 9 is preferably chosen to match.

Before bending a right-angled corner in the hollow profile bar 1, a foldable angle 13 is inserted into the recess 9, which in FIG. 2 is shown inserted into the hollow profile bar 1, wherein the angle 13, what you in FIG. 2 does not see, on both sides of the recess 9 still extends slightly below the inner wall 5.

FIG. 5 shows that in FIG. 2 inserted angle piece 13 in a side view. The angle piece 13 consists of two equal-length legs 14 and 15, which are connected by a foil joint 16, which is arranged on the outside of the angle piece 13. The outside of the angle piece 13 is that side which faces the outer wall 2 of the hollow profile bar 1 when the angle piece 13 is inserted into the hollow profile bar 1. The two legs 14 and 15 have directed against the outer wall 2 of the hollow profile bar flexible lamellae 17, which protrude a little above the foil joint 16. The inside of the legs 14, 15 is - apart from an insertion bevel 18 at the tips of the legs 14, 15 - flat and extends in the extended position of the Elbow 13 parallel to the outside of the foil joint 16. The height of the legs 14 and 15 is selected and matched to the clear height of the hollow profile bar 1, that the angle 13 in the extended position with its foil joint 16 of the outer wall 2 and facing away from the foil hinge 16 Side of his legs 14 and 15 of the inside of the inner wall 5 abuts, as in FIG. 8 shown. Since the lamellae 17 protrude slightly beyond the outside of the foil joint 16, these are slightly bent when the angle piece 13 is inserted and thereby bring about a backlash-free seating of the legs 14, 15 between the outer wall 2 and the inner wall 5 of the hollow profile bar 1.

On the side facing away from the foil hinge 16 side of the legs 14 and 15, a respective stop 14a and 15a is formed by the height of the legs 14 and 15 is increased stepwise approximately to the thickness of the inner wall 5 in the vicinity of the foil joint 16. The stops 14a and 15a are the two edges 19 and 20 facing, which limit the running in the inner wall 5 parts 11 of the recess 9 and extending transversely to the longitudinal direction of the hollow profile bar 1 from the one flank 3 to the opposite edge 4. The position of the stops 14a and 15a is matched to the length of the recess 9 so that the stops 14a and 15a are close to the edges 19 and 20. As a result, the center of the foil joint 16 is centered on the intended bending axis 12.

Each of the two legs 14 and 15 has on one half of its width in the vicinity of the foil joint 16 has a recess 21 which is open on its side facing the opposite leg 15, 14 side. On the other half of their width, the legs 14 and 15 in the vicinity of the foil hinge 16 each have a hook 22. The two hooks 22 have in opposite directions, namely towards the tip of the legs 14 and 15. The hook 22 of each leg 14, 15 is in each case the recess 21 in the other leg 15, 14 opposite. The hooks 22 are formed and arranged so that they engage in the opposite recess 21 when the two legs 14 and 15 are pivoted about the foil joint 16. By the positive engagement in the recesses 21, they fix the two legs 14 and 15, including a right angle. The foil hinge 16 is preferably formed so that it generates a restoring force in the bent state, which causes the hooks 22 are pressed against the wall of the recess 21, which additionally stabilizes the corner.

This in FIG. 5 shown angle piece can be used in the hollow profile bar 1, as shown in the FIGS. 6 and 7 is shown. For this purpose, the angle piece 13 is clamped on the film hinge 16 between a wedge-shaped abutment 23 and a finger 24. The two legs 14 and 15 are pivoted by two further fingers 25 and 26 against the abutment 23. The tips of the legs 14 and 15 are then approximated to each other so far that they can be inserted into the recess 9 ( FIG. 6 ). The abutment 23 is then removed and the fingers 24, 25 and 26 are moved in the direction indicated by the three arrows in FIG FIG. 7 illustrated direction the hollow profile bar 1 approximated. As a result, the angle 13 is pressed with simultaneous spreading in the hollow profile bar 1, wherein the legs 14 and 15 are temporarily bent by the fingers 25 and 26 (see FIG. 7 ). The insertion of the angle piece 13 is completed when it is in an extended position in the hollow profile bar 1. The over the stops 14a and 15a projecting portions of the legs 14 and 15 are then below the inner wall 5, as in FIG. 8 shown.

Is in the recesses 9 for all four corners of a spacer, an angle 13 used in an extended position, the hollow profile bar 1, while it is still in an elongated form, on the interior of the insulating glass facing side of the inner wall 5, hereinafter also referred to as the inside continuously coated with a sealant 27 and on the flanks 3 and 4 throughout with a secondary sealant 28, which can harden. For this purpose, the hollow profile bar 1 is linearly moved past one or more nozzles, from which the sealing compound 27 and the secondary sealing compound 28 can emerge controlled in synchronism with the movement of the hollow profile bar 1. How such a thing can be done is, for example, in the DE 10 2004 020 883 described, which is hereby incorporated by reference. The sealing compound 27 is intended later to prevent the diffusion of water vapor into the insulating glass pane into which the spacer to be formed from the hollow profile bar 1 is installed. The sealant 27 is made of, for example, a material based on polyisobutylene; First, it serves as a primary sealant and, second, it preferably contains a desiccant in powder form. The sealant 27 covered the entire inner wall 5 and extends laterally beyond this so far that it also extends beyond the alignment of the flanks 3 and 4 and at least partially also still the grooves 6 and 7 fills. The secondary sealing compound 28, which is preferably a reactive hot melt, is applied continuously to the sealing compound 27 subsequently to the flanks 3 and 4, preferably through nozzles which are located shortly after a nozzle for applying the sealing compound 27 come into use. This has the advantage that the already applied sealing compound 27 constitutes a limit to the application of the secondary sealing compound 28 and that the application of the sealing compound 27 can be controlled independently of the application of the secondary sealing compound 28, in view of different properties such as toughness and compressibility the masses may be beneficial.

Is the hollow profile bar 1 with the sealant 27 and the secondary sealant 28 coated ( FIG. 3 ), then it can be bent or folded at the sites provided for forming the corners of a frame-shaped spacer, overcoming a restoring force from the film hinge. Is in FIG. 9 illustrated by the example of an uncoated hollow profile bar 1 to show how the hooks 22 engage in the recesses 21 and thereby fix the legs 14 and 15 at a right angle to each other. The positive engagement of the hook 22 in the associated recess 21 prevents a greater angle than 90 ° between the two legs 14 and 15. After the engagement of the hooks 22 in their associated recesses 21 define between the legs 14, 15 effective stops another Reduction of the angle. By bending or folding the corner, excess sealant 27 and secondary sealant 28 are partially pressed into cavities which are present in the area of the corner and partially displaced onto flanks 3 and 4, as shown in FIG FIG. 4 is shown. This is desirable because it contributes to the sealing of the spacer in the area of the corners. An excess of sealant 27 and secondary sealant 28 on the flanks 3 and 4 is pressed during subsequent installation of the spacer in an insulating glass by the glass sheets against the flanks 3 and 4 and in the corner, which favors the formation of a hermetically sealed corner yet again ,

Are all four corners bent, are the beginning and end of the hollow section bar 1 opposite each other and are connected by a straight connector 35 together, soft one before bending or folding in one end and then inserted into the other end of the hollow profile bar 1. FIG. 10 shows the internal structure of a frame-shaped spacer with corner angles, for reasons of clarity, the coating with a sealant 27 and with a secondary sealant 28 was not shown.

A spacer, which is formed from a hollow profile bar 1, whose inner wall 5 is coated with a sealant 27, as it is for example in the FIG. 11 is particularly well suited to install one or more rungs 36. For this purpose, a foot part 37 is pressed into the sealing compound 27, without piercing the layer lying on the inner wall 5 of the sealant 27, so that the inner wall 5 remains coated over the entire surface, which is advantageous for a water vapor-tight closure of the insulating glass pane. By pressing in the foot part 37, a corresponding amount of the sealing compound 27 is displaced and rises at its edges, so that there is a toothing between the sealing compound 27 and the foot part 37. Since sealants such as polyisobutylene are sticky, the toothing between the sealant 27 and the foot 37 still adds a desired adhesive effect. The toothing between the sealant 27 and the foot part 37 is particularly good when the foot part 37 has a plate 38 which is provided with openings 39, as in FIG. 14 shown. In this case, the sealing compound 27 is also displaced into the openings 39 and leads to a particularly intimate toothing with the foot part 37. On the plate 38 is a connecting device 40, in which it is a two-legged fork pointing in opposite directions barb 41st is. The fork 40 can be snapped into a matching receiving part 42, which is in the end of the hollow rung 36. In the receiving part 42 may be a plastic molded part, the outer contour of the inner contour of the rung 36 is adjusted and has lamellae 43 which are bent when inserting the receiving part 42 into the rung 36 to the end of the rung 36 out and accordingly a pulling out from the rung 36 oppose increased resistance. The receiving part 42 has an inner contour, which is suitable for all possible sprouts 36 is the same. This has the advantage that one can get by with a single foot part 37 for all possible rungs 36, which can differ in their cross section. The receiving part 42 serves as an adapter.

In the receiving part 42, an undercut 44 is provided, behind which the barbs 41 can engage resiliently.

While the stretched hollow profile bar 1 is being coated in the pass, the coating may be marked at the locations where a rung 36 is to be based, for example by an ink jet printer. At the marked points, the foot part 37 can be pressed by hand into the sealant 27, while the hollow profile bar 1 is not yet bent and still lies on a stable surface. Alternatively, the foot parts 37 can also be set automatically by means of a numerically controlled handling device; in this case, a prior marking of the places where the foot parts 37 are to be set, dispensable. For example, the rungs 36 may be placed on the foot portions 37 shortly before the final closure of the spacer, see FIGS. 15 and 16 ,

FIG. 18 shows a cross section through a portion of an insulating glass pane, consisting of two individual glass sheets 45 and 46, between which there is a frame-shaped spacer, which is formed from a hollow profile bar 1, previously, as in FIG. 11 represented, with a sealant 27 and with a hardening adhesive 28 has been coated. The hollow profile bar 1 terminates with the edges of the glass sheets 45 and 46, wherein the protruding parts 8 of the outer wall 2 cover the edges of the glass sheets 45 and 46, abut them and protect them from chipping.

In the FIG. 19 illustrated insulating glass differs from the in FIG. 18 illustrated insulating glass pane therein that the protruding parts 8 of the outer wall 2 of the hollow profile bar 1 does not serve the protection of the edges of the two glass sheets 45 and 46. Rather, the protruding parts 8 of the outer wall 2 between the two glass panes 45 and 46 and thereby limit The distance and the minimum thickness of the coating of the flanks 3 and 4 of the hollow profile rod 1. The outer wall 2 of the hollow profile bar 1 is flush with the edges of the glass sheets 45 and 46, so that there is no edge joint between them, which would still have to be sealed.

LIST OF REFERENCE NUMBERS:

1.

Hollow-section bar

Second

outer wall

Third

flank

4th

flank

5th

inner wall

5a.

the interior of the insulating glass pane facing side (inside) of 5

6th

groove

7th

groove

8th.

supernatant part of 2

9th

recess

10th

Parts of the recess in 3, 4

11th

Parts of the recess in FIG. 5

12th

bending axis

13th

elbow

14th

Thighs of 13

14a.

attack

15th

Thighs of 13

15a.

attack

16th

foil hinge

17th

slats

18th

chamfer

19th

edge

20th

edge

21st

recess

22nd

hook

23rd

abutment

24th

finger

25th

finger

26th

finger

27th

Sealant, primary sealant

28th

secondary sealant

35th

straight connector

36th

rung

37th

footboard

38th

plate

39th

Breakthroughs in 38

40th

connecting device

41st

barb

42nd

Receiving part, adapter

43rd

slats

44th

undercut

45th

pane

46th

pane

Claims (26)

1. Insulating glass pane wherein

   - two separate glass panels (45,46) are kept at a distance from one another by a spacer, formed from a sectional bar (1), comprising a wall that delimits the inner space of the insulating glass pane and has an inner side (5a), an outer side or outer wall (2) opposite the inner side (5a) and two flanks (3,4);

   - the inner side (5a) and the outer side or outer wall (2) of the sectional bar (1) extend from one flank (3) to the opposite flank (4);

   - a drying agent is provided in conjunction with the spacer;

   - a gap is provided on both sides of the spacer, between the latter and the two glass panels (45,46), the gap being sealed by a sealing compound that adheres to the spacer and to the glass panels (45,46);

   - and one or more muntins (36) are fitted in the spacer,

   characterized in that a compound, especially a sealing compound, that adheres to the spacer, is arranged on the inner side (5a) of the spacer and that the muntins (22) are anchored directly or indirectly on or in the compound without piercing the compound fully up to the inner side (5a) of the sectional bar (1).
2. The insulating glass pane as defined in Claim 1, characterized in that the compound adhering to the inner side (5a) of the spacer contains a drying agent.
3. The insulating glass pane as defined in Claim 1 or Claim 2, characterized in that the muntins (36) are connected with separate foot pieces (37) which are anchored directly on or in the compound that adheres to the inner side (5a) of the spacer, without piercing the compound fully up to inner side (5a) of the sectional bar (1).
4. The insulating glass pane as defined in Claim 2 or Claim 3, characterized in that the muntins (36) or their foot pieces (37), respectively, are anchored in the compound adhering to the inner side (5a) (of the spacer) in form-locking engagement.
5. The insulating glass pane as defined in Claim 4, characterized in that the foot pieces (37) are provided with a projecting connection means (40) that serves to connect the foot piece (37) with the muntin (36).
6. The insulating glass pane as defined in Claim 3, 4 or 5, characterized in that the foot pieces (37) are provided with a plate (38) by means of which they are anchored on or in the compound (27) adhering to the inner side (5a) of the spacer, and that the plate (38) comprises a connection means (40) that projects from the plate.
7. The insulating glass pane as defined in Claim 6, characterized in that the plate (38) is provided with recesses and/or passages (39) for accommodating compound that adheres to the inner side (5a) of the spacer.
8. The insulating glass pane as defined in Claim 7, characterized in that the recesses and/or passages (39) accommodate compound that adheres to the inner side (5a) of the spacer and that has been displaced by pressing the foot piece (37) into the compound.
9. The insulating glass pane as defined in any of the preceding claims in connection with Claim 3, characterized in that the muntins (36) are connected with their foot piece (37) via an adapter (42).
10. The insulating glass pane as defined in Claim 9, characterized in that the adapter (42) is provided in the end of the muntin (36).
11. The insulating glass pane as defined in Claim 10, characterized in that the adapter (42) is fixed in the hollow end of the muntin (36).
12. The insulating glass pane as defined in any of Claims 9 to 11, characterized in that adapters (42), adapted to muntins (36) of various cross-sectional shapes, are provided with corresponding connection means for connection with foot pieces (37) of identical configuration one to the other.
13. The insulating glass pane as defined in any of Claims 5 to 8, characterized in that the connection means (40) of the foot piece is an extension that engages an adapter (42) according to any of Claims 9 to 12.
14. The insulating glass pane as defined in Claim 13, characterized in that the foot piece (37) and the adapter (42) are connected one with the other by simple insertion and/or by snapping-in.
15. The insulating glass pane as defined in any of the preceding claims, characterized in that the compound adhering to the inner side (5a) of the spacer covers the entire inner side (5a) of the spacer to the extent it is not already covered by another sealing compound that has been applied onto the flanks (3,4) and that may extend up to the inner side (5a) of the spacer.
16. The insulating glass pane as defined in any of the preceding claims, characterized in that the compound adhering to the inner side (5a) of the spacer is applied tightly adjacent the other sealing compound and adheres to the latter.
17. The insulating glass pane as defined in any of the preceding claims, characterized in that the compound adhering to the inner side (5a) of the spacer is interlinked with the spacer in form-locking engagement.
18. The insulating glass pane as defined in any of the preceding claims, characterized in that the sectional bar (1) is made from a plastic material.
19. The insulating glass pane as defined in Claim 18, characterized in that the sectional bar has a solid section and consists of a foamed material.
20. Method for producing an insulating glass pane having the features defined in any of the preceding claims comprising the steps of

    (a) providing a sectional bar (1);

    (b) applying a compound, which preferably contains a drying agent, onto the sectional bar (1), namely on the side that later forms the inner side (5a) of the spacer; and
    applying a sealing compound onto the flanks (3,4) of the sectional bar (1);

    (c) anchoring foot pieces (37) for one or more muntins (36) on or in the compound that has been applied on the inner side (5a) of the sectional bar (1), without piercing it fully up to the inner side (5a) of the sectional bar (1);

    (d) forming the coated sectional bar (1) into a frame-shaped structure, mounting one or more muntins (36) on the foot pieces (37) and closing the frame-shaped structure to form a spacer, by connecting the ends of the sectional bar (1) one with the other;

    (e) attaching the spacer to a first glass panel (45) so that it adheres to the latter in the neighborhood of the edge of the first glass panel (45);

    (f) attaching a second glass panel (46) to the spacer in parallel to the first glass panel (45) so that the spacer adheres to the second glass panel (46) as well;

    (g) compressing the two glass panels (45, 46) to the thickness specified for the insulating glass pane;

    (h) connecting the spacer, if desired, with the two glass panels (45, 46) by application of a secondary sealing compound (28),

    wherein the sequence in which the compound (27) and the other sealing compound are applied onto the inner side (5a) can be exchanged or application may be effected simultaneously or in a way overlapping in time.
21. Method for producing an insulating glass pane having the features as defined in any of Claims 1 to 19, comprising the steps of

    (a) providing a sectional bar (1);

    (b1) applying a compound, which preferably contains a drying agent, onto the sectional bar (1), namely on the side that later forms the inner side (5a) of the spacer; and
    applying a primary sealing compound onto the flanks (3,4) of the sectional bar (1);

    (b2) applying a secondary sealing compound (28) onto the flanks (3,4) of the sectional bar (1);

    (c) anchoring foot pieces (37) for one or more muntins (36) on or in the compound that adheres to the inner side (5a) of the sectional bar (1), without piercing it fully up to the inner side (5a) of the sectional bar (1);

    (d) forming the coated sectional bar (1) into a frame-shaped structure, mounting one or more muntins (36) on the foot pieces (37) and closing the frame-shaped structure to form a spacer, by connecting the ends of the sectional bar (1) one with the other;

    (e) attaching the spacer to a first glass panel (45) so that it adheres to the latter in the neighborhood of the edge of the first glass panel (45);

    (f) attaching a second glass panel (46) to the spacer in parallel to the first glass panel (45) so that the spacer adheres to the second glass panel (46) as well;

    (g) compressing the two glass panels (45, 46) to the thickness specified for the insulating glass pane;

    wherein the sequence in which the primary and the secondary sealing compounds and the sealing compound, which preferably contains the drying agent, are applied can be exchanged or application may be effected simultaneously or in a way overlapping in time.
22. The method as defined in Claim 20 or 21, characterized in that the compound used as the compound that preferably contains the drying agent, is a sealing compound which efficiently prevents water vapor from diffusing into the inner space of the insulating glass pane, especially one based on polyisobutylene or other primary sealing compounds commonly used for insulating glass panes.
23. The method as defined in any of Claims 20 to 22, characterized in that the primary sealing compound applied on the flanks (45,46) likewise contains a drying agent.
24. The method as defined in any of Claims 20 to 23, characterized in that the compound to be applied onto the inner side (5a) of the sectional bar (1), which contains the drying agent, and the other sealing compound are applied adjacent one another and so that the compound containing the drying agent covers the entire inner side (5a) of the spacer to the extent it is not already covered by the other sealing compound.
25. The method as defined in any of Claims 20 to 23, characterized in that the compound, which preferably contains the drying agent, is applied so as to cover the entire inner side (5a) of the spacer and to extend even onto the flanks (3,4).
26. The method as defined in Claim 25, characterized in that the compound, which preferably contains the drying agent, simultaneously serves as the primary sealing compound.

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