EP1022424A2 - Spacer profile member for insulating glazing - Google Patents

Abstract

The reinforcement (11) has a bending moment enabling the butyl strand to be formed to a dimensionally-stable frame.

Description

The present invention relates to a spacer bar for Insulating glass made from a butyl strand with embedded Desiccant exists.

With insulating glass, two individual panes are separated by one the edge of the spacer bar glued together and kept at a distance. The spacer strips are conventional working insulating glass systems made of hollow metal profile bars, usually made of steel or aluminum with a drying agent in granular form, e.g. Silica gel, filled are. The desiccant is used to remove the residual moisture in the the enclosed air or the enclosed glass To keep the gas as low as possible so that the discs cannot fog up from the inside at low temperatures.

Butylierung" auf eine Scheibe aufgelegt und anschließend auf seiner anderen Seite mit einer weiteren Scheibe abgedeckt. In einer Preßstation werden die Scheiben auf den Abstandsrahmen gepreßt, wobei der Rahmen den Abstand zwischen den Scheiben vorgibt und die Butylschichten an die Scheiben anfließen und diese dicht mit dem Rahmen verkleben. In einer weiteren, abschließenden Station erfolgt dann noch das Einbringen einer Sekundärdichtung, z.B. aus Polysulfidkautschuk, die für die zusätzliche mechanische Festigkeit der Randabdichtung sorgt.The hollow profile bars, supplied as bars, are bent into a frame in a work station on the insulating glass line and filled with the drying agent before or afterwards. The finished frames are then coated in a further work station with a permanent adhesive and sealant on their end faces facing the panes before they are installed in an insulating glass pane. Mostly it is a synthetic rubber known under the trade name Butyl. The frame is made according to his

Butylation "placed on a pane and then covered on its other side with another pane. The panes are pressed onto the spacer frame in a pressing station, the frame specifying the distance between the panes and the butyl layers flowing onto the panes and sealing them with the In a further, final station, a secondary seal, for example made of polysulfide rubber, is then added, which ensures the additional mechanical strength of the edge seal.

In the conventional insulating glass lines described above In addition to metal spacing frames, they are also made of Plastic used. However, the plastic hollow profiles mostly not bent into a frame, but under Use of corner connectors made of cut to length Plastic profiles inserted. An irreversible is also practiced Deformation of the plastic profiles at the bending points under the influence of heat.

In modern insulating glass streets, the so-called TPS streets, where TPS stands for Thermoplastic System, is used as a distance and Sealing strip a butyl strand mixed with a drying agent extruded onto one of the disks, then onto the a second disc is placed. In a press station the two disks are pressed onto the butyl strand in a defined manner and thereby glued to it. The butyl strand works at the same time as a spacer and at the same time ensures the water vapor tightness of the system. In conclusion then, as with a conventional insulating glass line, the Introduction of a secondary seal to achieve the mechanical Stability.

DE 195 35 976 A1 discloses a spacer which is known to experts under the trade name Swiggle Strip "from Temco-SA F-75643 Paris, Cedex 13, is known. It is a prefabricated, flexible, rollable butyl strand with an inserted aluminum strip Swiggle Strip "is supplied in rolls and is applied to the glass panes by special tools after it has been heated. Such a butyl strand is unsuitable for use in conventional insulating glass lines.

As can be seen from the brief explanations above, TPS roads are much more productive than conventional ones Insulated glass streets. They also have processed butyl strands as a spacer a much better thermal Separation as the systems made of metal or plastic.

The object of the present invention is for a conventional A spacer bar is also available make it possible to increase the productivity of these systems increase.

This object is achieved with a spacer bar of the type mentioned in that the butyl strand by at least one inside or outside or partially inside or external reinforcement profile stabilized to a bar stock is.

A pure butyl strand is no matter how soft or hard it is is unable to bear its own weight, i.e. it bends under the influence of gravity until it can be rolled up by. It is therefore for processing on one conventional insulating glass line is not suitable as a spacer, because it has to be dimensionally stable. At least an intended reinforcement profile primarily carries that Dead weight of the butyl strand and acts through its section modulus against bending. A spacer bar according to the invention has essentially the properties of a Bulk goods, such as the metal or plastic hollow profiles used according to the prior art, and can be used in the insulating glass line existing frame bending station to one in the Shaped plane stable frame are bent, so how required, can be handled as a single part.

Another advantage of the spacer bar according to the invention is that the good thermal separation in the TPS roads processed distance systems is essentially maintained.

In a further embodiment of the invention, the or the reinforcement profile (s) made of metal or plastic.

While bending the butyl strands reinforced with metal profile on the frame bending stations in the insulating glass line is problem-free, with plastic as a reinforcing material Arrangements are made so that at least a reinforcing plastic profile at the bends kinks. This can be achieved by making a brittle Plastic is used that breaks when bent, this Fractures are functionally unproblematic, since the butyl flows and closes the break points. It is possible also, at the corners to be bent, an angle from the butyl strand and cut out or punch the plastic profile. At fixed pane and thus spacer frame sizes also prefabricated predetermined breaking points or kinks in the plastic profile be provided. The plastic profile can be in the area the bending point are also irreversibly deformed. That becomes possible in the z. B. just before the bending process, a hot metal bolt is shot into the bending point.

The production of a spacer bar according to the invention can are carried out on commercially available extrusion equipment, adding the butyl strand around the at least one reinforcement profile is extruded around or on this.

As already in the butyl matrix of the spacer bar Desiccant is stored, the usual filling falls away with a desiccant. This saves time and costs.

This can save even more time and money be when the butyl strand is set so soft that it when assembling the insulating glass panes under accordingly great pressure flows onto the panes and these seal together glued. This can be done with metal frames or Plastic butylation of the end faces is not necessary. This can also be omitted if in the extrusion device the butyl with a relatively hard core that is not under pressure would flow to the panes, and each with a softer one Outer layer on the contact surfaces with the disks extruded becomes. Apply the softer layers on the end faces then the task of those otherwise to be applied after the frame bending Butyl caterpillars. These are therefore practically prefabricated.

Butyl is known to have a high water vapor diffusion resistance and is also gas-tight. This makes it as Sealing material for insulating glass ideally suited. plastic however, is not gas-tight and has a relatively low water vapor diffusion resistance. It can therefore, if appropriate Arrangement in or on the butyl strand and / or form of at least a plastic profile may be required in this diffusion barrier in the form of perforations provided by the Are penetrated with butyl.

The distance between the glass panes can vary depending on the pressing station on the arrangement of the at least one plastic profile in or on the butyl strand like in the TPS streets that work with an unreinforced butyl strand as described above, can be set by defined pressure, or the reinforcement profile or parts thereof serves as a spacer, against which is pressed.

Fig. 1

einen Querschnitt durch eine Ecke eines auf einer konventionellen Isolierglasanlage mit einem Metall-Abstandsrahmen hergestellten Isolierglases (Stand der Technik),

Fig. 2

einen schematischen Querschnitt durch eine Abstandsleiste nach einem ersten Ausführungsbeispiel,

Fig. 3

einen Schnitt III-III gemäß Fig. 2,

Fig. 4

einen schematischen Querschnitt durch eine Abstandsleiste nach einem zweiten Ausführungsbeispiel,

Fig. 5

einen schematischen Querschnitt durch eine Abstandsleiste nach einem dritten Ausführungsbeispiel,

Fig. 6

einen Querschnitt durch eine Abstandsleiste nach einem vierten Ausführungsbeispiel,

Fig. 7

einen schematischen Querschnitt durch eine Abstandsleiste nach einem fünften Ausführungsbeispiel,

Fig. 8

einen schematischen Querschnitt durch eine Abstandsleiste nach einem sechsten Ausführungsbeispiel und

Fig. 9

einen schematischen Querschnitt durch eine Abstandsleiste nach einem siebenten Ausführungsbeispiel,

Fig. 10

einen schematischen Schnitt durch eine Abstandsleiste nach einem achten Ausführungsbeispiel, und

Fig. 11

einen schematischen Schnitt durch eine Abstandsleiste nach einem neunten Ausführungsbeispiel.

The invention is explained in more detail below on the basis of exemplary embodiments. In the accompanying drawing:

Fig. 1

3 shows a cross section through a corner of an insulating glass produced on a conventional insulating glass system with a metal spacing frame (prior art),

Fig. 2

2 shows a schematic cross section through a spacer strip according to a first exemplary embodiment,

Fig. 3

3 shows a section III-III according to FIG. 2,

Fig. 4

2 shows a schematic cross section through a spacer strip according to a second exemplary embodiment,

Fig. 5

2 shows a schematic cross section through a spacer strip according to a third exemplary embodiment,

Fig. 6

3 shows a cross section through a spacer strip according to a fourth exemplary embodiment,

Fig. 7

2 shows a schematic cross section through a spacer strip according to a fifth exemplary embodiment,

Fig. 8

a schematic cross section through a spacer bar according to a sixth embodiment and

Fig. 9

2 shows a schematic cross section through a spacer strip according to a seventh exemplary embodiment,

Fig. 10

a schematic section through a spacer bar according to an eighth embodiment, and

Fig. 11

a schematic section through a spacer bar according to a ninth embodiment.

That shown in Fig. 1 to illustrate the prior art Insulating glass consists of two glass panes 1, 2 that by a spacer bar 3 designed as a hollow profile at a distance is held. The spacer bar 3 is made of metal and runs around as a frame. The spacer bar 3 is with a Desiccant 4 filled in granular form. So a gas exchange between the drying agent 4 and the space between the panes 5 can take place, the spacer 3 is through Holes 6 perforated. The glass panes 1 and 2 facing End faces of the spacer bar 3 are each with a butyl layer 7 provided that after bending the spacer bar too be applied to a frame. Then the glass panes 1 and 2 placed on both sides of the spacer bar 3 and pressed against them in the press station. This causes the flow Butyl layers 7 on the glass panes 1 and 2 and glue them gas-tight and water-vapor tight with the spacer strip 3. Then then a secondary seal 8, e.g. made of polysulfide rubber, brought in.

2 to 11 are cross sections or a longitudinal section of inventive, provided overall with the reference numeral 9 Spacer bars shown, which according to the state of the Replace the metal hollow sections used. The butyl strand is in each of these embodiments with the Reference number 10 and the reinforcement profile (s) with the Reference number 11 provided. There is a in the butyl matrix Desiccant stored, which is not apparent from the illustration.

In the embodiment shown in FIGS. 2 and 3 are reinforcing Plastic profiles 11 in the form of two flat strips embedded in the butyl strand 10. They are arranged upright, so that their maximum section modulus in the plane of the disks works. As a result, the spacer bar 9 bends in the plane of the disk essentially no more than that of the state of the art Technology usually processed from metal or bars Plastic. This also applies to the spacer strips of the rest Embodiments too.

On the one intended for contact with the glass panes The end face is the spacer bar 9 each with a layer 12 made of soft butyl with or without drying agent provided, in contrast to the other, harder butyl matrix with appropriate pressure on the glass panes of the insulating glass flows sealingly. The layers 12 can simultaneously extruded with the harder butyl matrix or in be extruded onto this in a second step. The pre-made Butyl layers 12 make the otherwise necessary Application of butyl layers on site in conventional insulating glass lines.

In the other exemplary embodiments according to FIGS. 4 to 8 and 10, the butyl layers 12 are not shown. You can but also be provided in these versions. Will on the Butyl layers 12 are dispensed with, from the spacer strips 9 bent frames butylated before assembling the insulating glass become. This can be omitted if the butyl strand 10 already has a sufficiently high level of liability with itself Glass panes received.

2 and 3 show that the two plastic profiles 11 to close to the lower one or upper surface of the butyl strand 10 are sufficient. they form thus diffusion bridges for water vapor. To this unwanted To block diffusion path, the plastic profiles 11 with each other staggered perforations 13, as shown in Fig. 3rd emerges. These perforations 13 are when extruding Butyl interspersed. Such diffusion barriers can if necessary also in the plastic profiles 11 of the other exemplary embodiments be provided.

From the illustration of FIG. 2 it can be seen that the Plastic profiles 11 due to their shape and arrangement in the butyl strand 10 can not serve as a spacer because of their distance of those intended for contact with the glass panes End faces is too large. Here the butyl strand 10 takes over, like in TPS roads too, the function of a spacer by the glass panes are pressed against the butyl strand 10 at a defined pressure become.

4 and 5 is a Plastic profile provided in a T-shape. The difference between these two embodiments is that the 4 a shorter crossbar 11.1 has as the plastic profile 11 shown in FIG. 5. In training 5, the crossbar 11.1 as a spacer act as it is close to the end faces to be pressed of the butyl strand 10 reaches. In the example shown in FIG. 4 must the distance between the glass panes, as in the first embodiment also, can be set by defined pressure.

6 and 7 show plastic profiles 11 in the form of a standing or lying H. In both cases, the plastic profiles 11 due to their arrangement in the butyl strand 10 and their shape act as a spacer.

8 is a plastic profile 11 provided in T-shape, which is different from the versions 4 and 5 only partially in the butyl strand 10 is embedded. The cross member 11.1 is outside of the butyl strand 10, while the vertical bar 11.2 in protrudes the butyl strand 10. Also in this embodiment the crossbar 11.1 can act as a spacer.

Fig. 9 shows a completely external plastic profile 11 in a U shape, which the butyl strand 10 on three sides envelops. Since the cheeks 11.3 of the plastic profile 11 one represent a continuous diffusion path for water vapor they will definitely be blocked, which is also due to perforations, as already explained above, can be achieved. In addition, the outside of the cheeks must necessarily 11.3 butylated to maintain adhesion to the glass panes.

Figures 10 and 11 are in contrast to the foregoing Embodiments of reinforcement profiles 11 made of metal.

10 are two L-shaped metal profiles 11 with a short leg 11.4 and a long one Leg 11.5 embedded in the eutyl strand. Because of the bend of the short leg 11.4 from the long leg 11.5 the section modulus of this metal profile 11 increases. A diffusion barrier is of course not necessary here.

11 differs from the above in that the L-shaped metal profiles 11th are partially arranged outside. So the long ones lie Leg 11.5 on the outside of the butyl strand 10, while the short Project leg 11.4 into the butyl strand.

Claims (6)

Spacer bar for insulating glass, which consists of a prefabricated butyl strand with an incorporated desiccant and a reinforcement profile, characterized in that the at least one reinforcement profile (11) located inside or outside or partially inside or outside has a bending moment which enables the butyl strand (10) to bend into a dimensionally stable frame. Spacer bar according to claim 1, characterized in that the internal or external reinforcing profile (11) or parts thereof specifies the distance between the glass panes of the insulating glass. Spacer bar according to claim 1 or 2, characterized in that the reinforcing profile (11) is made of metal. Spacer bar according to claim 1 or 2, characterized in that the reinforcing profile is made of plastic. Spacer bar according to claim 4, characterized in that the inner or outer plastic profile (11) is perforated offset, the perforations (13) being penetrated by the butyl matrix. Spacer bar according to one of the preceding claims, characterized in that the butyl strand (10) has a layer (12) of softly adjusted butyl on its end faces facing the panes of the insulating glass.

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