EP0719904A1 - Insulated glazing unit - Google Patents

Insulated glazing unit Download PDF

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Publication number
EP0719904A1
EP0719904A1 EP95120409A EP95120409A EP0719904A1 EP 0719904 A1 EP0719904 A1 EP 0719904A1 EP 95120409 A EP95120409 A EP 95120409A EP 95120409 A EP95120409 A EP 95120409A EP 0719904 A1 EP0719904 A1 EP 0719904A1
Authority
EP
European Patent Office
Prior art keywords
edge joint
insulating glass
joint filling
glass unit
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95120409A
Other languages
German (de)
French (fr)
Other versions
EP0719904B1 (en
Inventor
Werner Böge
Bernhard Dr. Goer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Flachglas Wernberg GmbH
Original Assignee
Flachglas Wernberg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19944447049 external-priority patent/DE4447049A1/en
Priority claimed from DE19944447059 external-priority patent/DE4447059A1/en
Application filed by Flachglas Wernberg GmbH filed Critical Flachglas Wernberg GmbH
Publication of EP0719904A1 publication Critical patent/EP0719904A1/en
Application granted granted Critical
Publication of EP0719904B1 publication Critical patent/EP0719904B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66342—Section members positioned at the edges of the glazing unit characterised by their sealed connection to the panes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66328—Section members positioned at the edges of the glazing unit of rubber, plastics or similar materials
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66314—Section members positioned at the edges of the glazing unit of tubular shape
    • E06B3/66319—Section members positioned at the edges of the glazing unit of tubular shape of rubber, plastics or similar materials

Definitions

  • the invention relates to an insulating glass unit with an inner pane, an outer pane and a peripheral edge joint with edge joint filling.
  • the insulating glass unit is particularly intended for window and facade cladding in the construction sector, but can also be used as a vehicle window.
  • Such an insulating glass unit must absorb considerable thermal stresses from, for example, solar radiation at high outside temperatures on the one hand and from low outside temperatures during deep frost on the other hand.
  • thermal stresses from, for example, solar radiation at high outside temperatures on the one hand and from low outside temperatures during deep frost on the other hand.
  • the insulating glass unit to which the invention relates is designed to be soundproof and / or heat-insulating.
  • the distance between the two glass panes must be set up and maintained with small tolerances. This also applies to the edge joint. High demands are placed on the sealing.
  • the edge joint filling which consists of a reaction adhesive or a plastic, is used for this.
  • Insulating glass units of the construction described are a pronounced mass product of industrial series production. They must be set up in such a way that they can be produced on modern automatic production facilities with a large number of units in the unit of time and safe and with a long service life meet all requirements of the very complex load spectrum.
  • an edge joint filling which also functions as a spacer. It consists of reaction adhesive strands.
  • the manufacturing process is such that the reaction adhesive strands protrude over the edge of the disc with a bead that has to be removed in a special manufacturing stage by mechanical reworking. This is complex from a manufacturing point of view and can be improved with regard to long-term tightness.
  • a spacer designed as a hollow profile is provided in another insulating glass unit (EP 0 430 889 A2).
  • an edge joint filling made of synthetic resin adhesive is arranged in another insulating glass unit.
  • the hollow profile has a moisture absorbent Substance and holes towards the space between the panes.
  • a water vapor and gas impermeable coating for example a metallic coating
  • the invention is based on the technical problem of creating an insulating glass unit of the construction described at the outset which can be easily manufactured in the context of automated industrial series production and which in the long term satisfies the complex range of stresses as described at the outset.
  • the subject of the invention is an insulating glass unit with an inner pane, an outer pane and a peripheral edge joint with edge joint filling, which can accommodate complex stresses when using the insulating glass unit in the construction sector and also to absorb extreme mechanical stresses, for example in the form of vibrations and Vibrations, as they occur in vehicles, is suitable, wherein the following features are realized: 1.1)
  • the edge joint filling consists of a thermoplastic elastomer from the group of polyolefin mixtures (TPO), 1.2)
  • TPO plastic is selected or mixed from the group according to 1.1) so that the edge joint filling has the following properties: Water vapor transmission rate (ASTM-F1249) ⁇ 1 g.mm/mm 2 .d
  • a Shore hardness of about 65 A is preferably used.
  • a pressure / heat connection is a connection that was created using pressure and heat.
  • the TPO plastic is selected or mixed in accordance with feature 1.2) such that the edge joint filling has the following properties: Water vapor transmission rate ⁇ 1 g.mm/mm 2 .d tensile strenght > 1.0 N / mm 2 50% train module > 0.5 N / mm 2 Shore hardness > 40 A.
  • the TPO plastics include, for example, ethylene-propylene-diene terpolymer / polypropylene (EPDM / PP), or natural rubber / polypropylene (NR / PP), or butyl rubber / polypropylene (IIR / PP) and alloys or mixtures thereof.
  • EPDM / PP ethylene-propylene-diene terpolymer / polypropylene
  • NR / PP natural rubber / polypropylene
  • IIR / PP butyl rubber / polypropylene
  • the invention is based on the knowledge that some of the TPO plastics listed in feature 1.1) are suitable for the construction of the edge joint fillings in insulating glass units which are exposed to the complex range of stresses described at the outset.
  • the individual members of the group in turn consist of a number of special variants that plastic chemistry specifies.
  • the edge joint filling can be extruded and thereby shaped as such according to the desired geometry.
  • any reworking is omitted because an end view surface is formed in accordance with feature 1.3). It is visible in the finished insulating glass unit between the inner pane and the outer pane and forms a smooth, flush closure with at least one of these panes. Surprisingly, tight tolerances can be met exactly. Alignment with one of the glass panes is established when the other glass pane protrudes with a guide edge. Close both glass panels flush ends, the edge joint filling made of TPO is flush with the edges of the two glass panes.
  • the final visible surface which was formed during extrusion or continuous casting fulfills a double function in the context of the invention. Under the influence of the surface tension of the thermoplastic during extrusion and when it emerges from the extrusion die, it has formed practically non-porous and thereby improves the diffusion tightness, and thus serves not only as a visible surface.
  • the teaching of the invention permits two fundamentally identical embodiments, which are specified in detail, however, in accordance with different uses.
  • the insulating glass unit is preferably equipped with an inner pane, an outer pane and a spacer which runs around the edge to form the edge joint and is designed as a hollow profile, as well as the additional edge joint filling.
  • the edge joint filling is expediently connected not only to the glass panes, but also to the hollow profile. This can be glued in turn.
  • a particular advantage of the invention is that a gas and water vapor permeable coating, in particular a metal coating, is no longer required on the surface of the hollow profile facing the edge joint filling.
  • the selection or mixture will be made so that the TPO material has an argon permeability of> 100 ml mm / m 2 d bar at 20 ° C.
  • For Use on vehicles is flush with the inner pane and the outer pane, or one of the panes projects with a guide edge.
  • vehicle window means in particular motor vehicle windows for fast-moving motor vehicles which are exposed to high dynamic loads from air forces and when the motor vehicle doors equipped with the insulating glass are slammed shut.
  • the TPO plastics that are used according to the invention have no polar character. Nonetheless and surprisingly, it is possible to select the TPO plastic from group 1.1) or mixtures thereof in accordance with the selection criterion 1.2) for a pressure / heat connection in an insulating glass unit according to the invention. A high level of adhesion between the edge joint filling and the glass panes can always be achieved. Whether such adhesion is sufficient depends on the TPO plastic selected, but also on the surface of the glass panes that may be printed.
  • the insulating glass unit according to the invention to use the TPO plastic from group 1.1) or mixtures thereof in accordance with the selection criterion 1.2) for a pressure / heat connection with the interposition of an adhesion promoter applied to the glass panes the group "polyurethane systems, polyethylene and polypropylene systems, ethylene vinyl acetates" or mixtures thereof.
  • the adhesion of the edge joint filling to the glass should be> 5 N / mm.
  • the adhesion of the edge joint filling to the hollow profile is cohesive.
  • drying agents into the TPO plastic of the edge joint fillings, for example in an amount of up to 20% by weight.
  • the edge joint filling can consist of two strands of different TPO plastics from group 1.1), of which at least one is selected in accordance with selection criterion 1.2). They can be made by coextrusion. In the embodiment of the invention with a distance-defining hollow profile, the hollow profile and the edge joint filling can be combined by coextrusion.
  • the insulating glass units according to the invention meet the complex stress range described at the beginning for a long time. They easily pass the creep tests according to DIN 1286, part 1 and part 2. They also pass the usual climatic changes, low temperature tests, high temperature tests and pressure changes tests.

Abstract

The glass insulating unit consists of inner and outer panes (A and B) sepd round the edges by a joint filling material (I) designed to take up complex stresses arising in building applications and also mechanical stresses such as shock and vibration. Material (I) is a thermoplastic elastomer based on polyolefin mixts (TPO), with a water vapour permeability of less than 1 g.mm/mm<2>/day, a tensile strength of more than 4 N/mm<2>, a 50% tensile modulus of more than 1 N/mm<2> and a Shore hardness of more than 50 A. This material is produced by extrusion or continuous casting, in the form of a string with a visible sealing surface. The joint between (A), (I) and (B) is an adhesive pressure/heat bond, in which the visible sealing surface of (I) is pressed flush with the edge of (A) and/or (B) in such a way as to require no finishing.

Description

Die Erfindung betrifft eine Isolierglaseinheit mit einer Innenscheibe, einer Außenscheibe und einer randseitig umlaufenden Randfuge mit Randfugenfüllung. Die Isolierglaseinheit ist insbesondere für Fenster- und Fassadenverkleidungen im Baubereich bestimmt, kann aber auch als Fahrzeugscheibe eingesetzt werden. Eine solche Isolierglaseinheit muß erhebliche thermische Beanspruchungen aus zum Beispiel Sonneneinstrahlung bei hohen Außentemperaturen einerseits und aus niedrigen Außentemperaturen bei tiefem Frost andererseits aufnehmen. Hinzu kommen dynamische Beanspruchungen aus Wind und Wetter, bei Fahrzeugscheiben auch aus Erschütterungen.The invention relates to an insulating glass unit with an inner pane, an outer pane and a peripheral edge joint with edge joint filling. The insulating glass unit is particularly intended for window and facade cladding in the construction sector, but can also be used as a vehicle window. Such an insulating glass unit must absorb considerable thermal stresses from, for example, solar radiation at high outside temperatures on the one hand and from low outside temperatures during deep frost on the other hand. In addition, there are dynamic loads from wind and weather, and in the case of vehicle windows also from vibrations.

Die Isolierglaseinheit, auf die sich die Erfindung bezieht, ist schall- und/oder wärmedämmend ausgelegt. Der Abstand zwischen den beiden Glasscheiben muß mit geringen Toleranzen eingerichtet und eingehalten werden. Das gilt auch für die Randfuge. An die Abdichtung werden hohe Anforderungen gestellt. Dazu dient die Randfugenfüllung, die aus einem Reaktionskleber oder einem Kunststoff besteht.The insulating glass unit to which the invention relates is designed to be soundproof and / or heat-insulating. The distance between the two glass panes must be set up and maintained with small tolerances. This also applies to the edge joint. High demands are placed on the sealing. The edge joint filling, which consists of a reaction adhesive or a plastic, is used for this.

Isolierglaseinheiten des beschriebenen Aufbaus sind ein ausgesprochenes Massenprodukt der industriellen Serienfertigung. Sie müssen so eingerichtet sein, daß sie auf modernen automatischen Fertigungseinrichtungen mit hoher Stückzahl in der Zeiteinheit gefertigt werden können und sicher sowie mit langer Standzeit allen Anforderungen des sehr komplexen Beanspruchungsspektrums genügen.Insulating glass units of the construction described are a pronounced mass product of industrial series production. They must be set up in such a way that they can be produced on modern automatic production facilities with a large number of units in the unit of time and safe and with a long service life meet all requirements of the very complex load spectrum.

Bei bekannten Isolierglaseinheiten (EP 0 413 283 A2, EP 0 488 072 A1) ist eine Randfugenfüllung vorgesehen, die zugleich als Abstandshalter funktioniert. Sie besteht aus Reaktionsklebersträngen. Bei der Herstellung wird so gearbeitet, daß die Reaktionskleberstränge über den Scheibenrand mit einem Wulst übersteht, der in einer besonderen Fertigungsstufe durch mechanisches Nacharbeiten entfernt werden muß. Das ist in fertigungstechnischer Hinsicht aufwendig und in bezug auf die langfristige Dichtheit verbesserungsfähig. Zur Verbesserung der Dichtheit ist es bei Isolierglaseinheiten auch bekannt (DE 27 52 542 C2), für die Abstandshalter Kunststoffe einzusetzen, die einer thermischen Nachbehandlung bedürfen, was ebenfalls aufwendig ist. Bei anderen Isolierglaseinheiten ist es bekannt (DE 19 34 712 B2), mit einem flexiblen Abstandshalter zu arbeiten, der selbst feuchtigkeitsaufnehmend ist und einen Zeolithen aufweist, der in einer Matrix aus einem synthetischen Polymer verteilt ist, weil dieses synthetische Polymer wasserdampfdurchlässig ist. Die insoweit bekannten Maßnahmen haben sich bei Isolierglaseinheiten, die dem angegebenen komplexen Beanspruchungsspektrum genügen müssen, nicht bewährt.In the case of known insulating glass units (EP 0 413 283 A2, EP 0 488 072 A1), an edge joint filling is provided which also functions as a spacer. It consists of reaction adhesive strands. The manufacturing process is such that the reaction adhesive strands protrude over the edge of the disc with a bead that has to be removed in a special manufacturing stage by mechanical reworking. This is complex from a manufacturing point of view and can be improved with regard to long-term tightness. To improve the tightness, it is also known in insulating glass units (DE 27 52 542 C2) to use plastics for the spacers which require thermal aftertreatment, which is also complex. In other insulating glass units, it is known (DE 19 34 712 B2) to work with a flexible spacer which is itself moisture-absorbent and has a zeolite which is distributed in a matrix made of a synthetic polymer because this synthetic polymer is permeable to water vapor. The measures known so far have not proven their worth in insulating glass units which have to meet the specified complex stress spectrum.

Bei einer anderen Isolierglaseinheit (EP 0 430 889 A2) ist ein als Hohlprofil ausgeführter Abstandshalter vorgesehen. Zusatzlich ist eine Randfugenfüllung aus einem Kunstharzkleber angeordnet. Das Hohlprofil weist eine feuchtigkeitsaufnehmende Substanz und zum Scheibenzwischenraum hin Bohrungen auf. Hier ist es erforderlich, auf das Kunststoffhohlprofil zu dem Kunstharzkleber hin eine wasserdampf- und gasundurchlässige Beschichtung, zum Beispiel eine metallische Beschichtung, aufzubringen, was aufwendig ist.In another insulating glass unit (EP 0 430 889 A2), a spacer designed as a hollow profile is provided. In addition, an edge joint filling made of synthetic resin adhesive is arranged. The hollow profile has a moisture absorbent Substance and holes towards the space between the panes. Here it is necessary to apply a water vapor and gas impermeable coating, for example a metallic coating, to the plastic hollow profile to the synthetic resin adhesive, which is expensive.

Der Erfindung liegt das technische Problem zugrunde, eine Isolierglaseinheit des eingangs beschriebenen Aufbaus zu schaffen, die im Rahmen einer automatisierten industriellen Serienfertigung einfach gefertigt werden kann und dem komplexen Beanspruchungsspektrum, wie es eingangs beschrieben wurde, langfristig genügt.The invention is based on the technical problem of creating an insulating glass unit of the construction described at the outset which can be easily manufactured in the context of automated industrial series production and which in the long term satisfies the complex range of stresses as described at the outset.

Zur Lösung dieses technischen Problems ist Gegenstand der Erfindung eine Isolierglaseinheit mit einer Innenscheibe, einer Außenscheibe und einer randseitig umlaufenden Randfuge mit Randfugenfüllung, die zur Aufnahme komplexer Beanspruchungen bei Verwendung der Isolierglaseinheit im Baubereich sowie auch zur Aufnahme extremer mechanischer Beanspruchungen, z.B. in Form von Erschütterungen und Schwingungen, wie sie bei Fahrzeugen auftreten, geeignet ist, wobei die folgenden Merkmale verwirklicht sind:
1.1) Die Randfugenfüllung besteht aus einem thermoplastischen Elastomer aus der Gruppe der Polyolefin-Mischungen (TPO),
1.2) der TPO-Kunststoff ist aus der Gruppe gemäß 1.1) so ausgewählt bzw. gemischt, daß die Randfugenfüllung die folgenden Eigenschaften aufweist: Wasserdampfdurchlässigkeitsrate (ASTM-F1249) < 1 g.mm/mm2.d Zugfestigkeit (DIN 53504) > 4 N/mm2 50 % Zug-Modul (DIN 53504) > 1 N/mm2 Shore Härte (DIN 53505) > 50 A,
1.3) die Randfugenfüllung ist durch Extrudieren oder Stranggießen als Strang mit einer Abschlußsichtfläche geformt, wobei der Verbund der Randfugenfüllung mit der Innenscheibe und der Außenscheibe als eine adhäsive Druck/Wärme-Verbindung ausgeführt ist und wobei die Abschlußsichtfläche nacharbeitsfrei mit der Kante von zumindest einer der Glasscheiben bündig verpreßt ist. Vorzugsweise wird mit einer Shore Härte von etwa 65 A gearbeitet. Eine Druck/Wärme-Verbindung ist eine Verbindung, die unter Anwendung von Druck und Wärme hergestellt wurde. Nach bevorzugter Ausführungsform der Erfindung ist der TPO-Kunststoff gemäß Merkmal 1.2) so ausgewählt bzw. gemischt, daß die Randfugenfüllung die folgenden Eigenschaften aufweist: Wasserdampfdurchlässigkeitsrate < 1 g.mm/mm2.d Zugfestigkeit > 1,0 N/mm2 50 % Zug-Modul > 0,5 N/mm2 Shore Härte > 40 A. To solve this technical problem, the subject of the invention is an insulating glass unit with an inner pane, an outer pane and a peripheral edge joint with edge joint filling, which can accommodate complex stresses when using the insulating glass unit in the construction sector and also to absorb extreme mechanical stresses, for example in the form of vibrations and Vibrations, as they occur in vehicles, is suitable, wherein the following features are realized:
1.1) The edge joint filling consists of a thermoplastic elastomer from the group of polyolefin mixtures (TPO),
1.2) The TPO plastic is selected or mixed from the group according to 1.1) so that the edge joint filling has the following properties: Water vapor transmission rate (ASTM-F1249) <1 g.mm/mm 2 .d Tensile strength (DIN 53504) > 4 N / mm 2 50% tension module (DIN 53504) > 1 N / mm 2 Shore hardness (DIN 53505) > 50 A,
1.3) the edge joint filling is formed by extrusion or continuous casting as a strand with a final visible surface, the composite of the peripheral joint filling with the inner pane and the outer pane being designed as an adhesive pressure / heat connection, and the final visible surface being rework-free with the edge of at least one of the glass panes is pressed flush. A Shore hardness of about 65 A is preferably used. A pressure / heat connection is a connection that was created using pressure and heat. According to a preferred embodiment of the invention, the TPO plastic is selected or mixed in accordance with feature 1.2) such that the edge joint filling has the following properties: Water vapor transmission rate <1 g.mm/mm 2 .d tensile strenght > 1.0 N / mm 2 50% train module > 0.5 N / mm 2 Shore hardness > 40 A.

Zu den TPO-Kunststoffen zählen zum Beispiel Ethylen-Propylen-Dien-Terpolymer/Polypropylen (EPDM/PP), oder Naturkautschuk/Polypropylen (NR/PP), oder Butylkautschuk/Polypropylen (IIR/PP) und Legierungen oder Mischungen daraus.The TPO plastics include, for example, ethylene-propylene-diene terpolymer / polypropylene (EPDM / PP), or natural rubber / polypropylene (NR / PP), or butyl rubber / polypropylene (IIR / PP) and alloys or mixtures thereof.

Die Erfindung geht von der Erkenntnis aus, daß aus den in der im Merkmal 1.1) aufgezählten Gruppe von TPO-Kunststoffen einige für den Aufbau der Randfugenfüllungen bei Isolierglaseinheiten, die dem eingangs beschriebenen komplexen Beanspruchungsspektrum ausgesetzt sind, geeignet sind. Die einzelnen Mitglieder der Gruppe bestehen ihrerseits aus einer Mehrzahl von speziellen Varianten, die die Kunststoffchemie vorgibt. Überraschenderweise kann leicht der für eine Fertigung von Isolierglaseinheiten des eingangs beschriebenen Aufbaus gut brauchbare thermoplastische Kunststoff ausgewählt werden, wenn die Auswahl (im Labor) nach Maßgabe des Auswahlkriteriums 1.2) getroffen wird. Das gilt sowohl für die Ausführungsform nach Patentanspruch 1 als auch für die Ausführungsform nach Patentanspruch 2. Die Randfugenfüllung kann extrudiert und dadurch als solche entsprechend der gewünschten Geometrie geformt werden. Jedes Nacharbeiten entfällt, weil gemäß Merkmal 1.3) eine Abschlußsichtfläche angeformt ist. Sie ist bei der fertigen Isolierglaseinheit zwischen Innenscheibe und Außenscheibe sichtbar und bildet mit zumindest einer dieser Scheiben einen glatten, bündigen Abschluß. Überraschenderweise können engen Toleranzen genau eingehalten werden. Die Bündigkeit mit einer der Glasscheiben wird eingerichtet, wenn die andere Glasscheibe mit einem Führungsrand vorsteht. Schließen beide Glasscheiben bündig ab, so schließt auch die aus dem TPO bestehende Randfugenfüllung bündig mit den Kanten der beiden Glasscheiben ab. Die Abschlußsichtfläche, die beim Extrudieren oder Stranggießen gebildet wurde, erfüllt im Rahmen der Erfindung eine Doppelfunktion. Sie hat sich unter dem Einfluß der Oberflächenspannung des thermoplastifizierten Kunststoffes beim Extrudieren sowie beim Austritt aus dem Extruderwerkzeug praktisch porenfrei gebildet und verbessert dadurch die Diffusionsdichtheit, dient also nicht nur als Sichtfläche.The invention is based on the knowledge that some of the TPO plastics listed in feature 1.1) are suitable for the construction of the edge joint fillings in insulating glass units which are exposed to the complex range of stresses described at the outset. The individual members of the group in turn consist of a number of special variants that plastic chemistry specifies. Surprisingly, it is easy to select the thermoplastic material which can be used well for the production of insulating glass units of the construction described at the outset if the selection (in the laboratory) is made in accordance with selection criterion 1.2). This applies both to the embodiment according to patent claim 1 and to the embodiment according to patent claim 2. The edge joint filling can be extruded and thereby shaped as such according to the desired geometry. Any reworking is omitted because an end view surface is formed in accordance with feature 1.3). It is visible in the finished insulating glass unit between the inner pane and the outer pane and forms a smooth, flush closure with at least one of these panes. Surprisingly, tight tolerances can be met exactly. Alignment with one of the glass panes is established when the other glass pane protrudes with a guide edge. Close both glass panels flush ends, the edge joint filling made of TPO is flush with the edges of the two glass panes. The final visible surface which was formed during extrusion or continuous casting fulfills a double function in the context of the invention. Under the influence of the surface tension of the thermoplastic during extrusion and when it emerges from the extrusion die, it has formed practically non-porous and thereby improves the diffusion tightness, and thus serves not only as a visible surface.

Die Lehre der Erfindung erlaubt zwei grundsätzlich gleiche, im Detail jedoch nach Maßgabe unterschiedlicher Verwendungen spezifizierter Ausführungsformen. Für die Verwendung im Bauwesen ist die Isolierglaseinheit vorzugsweise ausgerüstet mit einer Innenscheibe, einer Außenscheibe und einem randseitig unter Bildung der Randfuge umlaufenden, als Hohlprofil ausgeführten Abstandshalter sowie der zusätzlichen Randfugenfüllung. Die Randfugenfüllung ist hier zweckmäßigerweise nicht nur mit den Glasscheiben, sondern auch mit dem Hohlprofil verbunden. Dieses kann seinerseits eingeklebt sein. Ein besonderer Vorteil der Erfindung besteht darin, daß auf der der Randfugenfüllung zugewandten Oberfläche des Hohlprofils eine gas- und wasserdampfdurchlässige Beschichtung, insbesondere eine Metallbeschichtung, nicht mehr erforderlich ist. Im Rahmen der Verwendung im Baubereich wird man die Auswahl bzw. Mischung so treffen, daß das TPO-Material bei 20° C eine Argondurchlässigkeit > 100 ml mm/m2 d bar aufweist. Das gilt insbesondere für Isolierglasscheiben. Für eine Verwendung bei Fahrzeugen schließen die Innenscheibe und die Außenscheibe bündig ab oder eine der Scheiben steht mit einem Führungsrand vor. Diese Maßnahme ist jedoch im Rahmen der Verwendung bei Fahrzeugen nicht beschränkend. Der Begriff "Fahrzeugscheibe" meint insbesondere Kraftfahrzeugscheiben für schnellfahrende Kraftfahrzeuge, die hohen dynamischen Beanspruchungen aus Luftkräften und beim Zuschlagen der mit der Isolierglasheit ausgerüsteten Kraftfahrzeugtüren ausgesetzt sind. Hier fehlt im allgemeinen ein selbständiges, als Abstandsprofil, zum Beispiel als Hohlprofil, ausgebildetes Bauteil. Vielmehr übernimmt die Randfugenfüllung auch die Funktion des Abstandhalters.The teaching of the invention permits two fundamentally identical embodiments, which are specified in detail, however, in accordance with different uses. For use in construction, the insulating glass unit is preferably equipped with an inner pane, an outer pane and a spacer which runs around the edge to form the edge joint and is designed as a hollow profile, as well as the additional edge joint filling. The edge joint filling is expediently connected not only to the glass panes, but also to the hollow profile. This can be glued in turn. A particular advantage of the invention is that a gas and water vapor permeable coating, in particular a metal coating, is no longer required on the surface of the hollow profile facing the edge joint filling. In the context of use in construction, the selection or mixture will be made so that the TPO material has an argon permeability of> 100 ml mm / m 2 d bar at 20 ° C. This applies in particular to insulating glass panes. For Use on vehicles is flush with the inner pane and the outer pane, or one of the panes projects with a guide edge. However, this measure is not restrictive in the context of use in vehicles. The term “vehicle window” means in particular motor vehicle windows for fast-moving motor vehicles which are exposed to high dynamic loads from air forces and when the motor vehicle doors equipped with the insulating glass are slammed shut. There is generally no independent component designed as a spacer profile, for example as a hollow profile. Rather, the edge joint filling also takes on the function of the spacer.

Die TPO-Kunststoffe, die erfindungsgemäß eingesetzt werden, haben keinen polaren Charakter. Nichtsdestoweniger und überraschenderweise besteht die Möglichkeit, bei einer erfindungsgemäßen Isolierglaseinheit den TPO-Kunststoff aus der Gruppe 1.1) oder Mischungen davon nach Maßgabe des Auswahlkriteriums 1.2) für eine Druck/Wärme-Verbindung auszuwählen. Eine hohe Haftung zwischen der Randfugenfüllung und den Glasscheiben ist stets erreichbar. Ob eine solche Haftung ausreicht, hängt von dem ausgewählten TPO-Kunststoff, aber auch von der Oberfläche der unter Umständen bedruckten Glasscheiben ab. Im Rahmen der Erfindung liegt es, bei der erfindungsgemäßen Isolierglaseinheit den TPO-Kunststoff aus der Gruppe 1.1) oder Mischungen davon nach Maßgabe des Auswahlkriteriums 1.2) für eine Druck/Wärme-Verbindung mit Zwischenschaltung eines auf die Glasscheiben aufgebrachten Haftvermittlers der Gruppe "Polyurethan-Systeme, Polyethylen- und Polypropylen-Systeme, Ethylen-Vinylacetate" oder Mischungen davon auszuwählen. Die Haftung der Randfugenfüllung zum Glas (Schälung. 90°) soll > 5 N/mm sein. Die Haftung der Randfugenfüllung zum Hohlprofil ist kohäsiv.The TPO plastics that are used according to the invention have no polar character. Nonetheless and surprisingly, it is possible to select the TPO plastic from group 1.1) or mixtures thereof in accordance with the selection criterion 1.2) for a pressure / heat connection in an insulating glass unit according to the invention. A high level of adhesion between the edge joint filling and the glass panes can always be achieved. Whether such adhesion is sufficient depends on the TPO plastic selected, but also on the surface of the glass panes that may be printed. It is within the scope of the invention for the insulating glass unit according to the invention to use the TPO plastic from group 1.1) or mixtures thereof in accordance with the selection criterion 1.2) for a pressure / heat connection with the interposition of an adhesion promoter applied to the glass panes the group "polyurethane systems, polyethylene and polypropylene systems, ethylene vinyl acetates" or mixtures thereof. The adhesion of the edge joint filling to the glass (peeling. 90 °) should be> 5 N / mm. The adhesion of the edge joint filling to the hollow profile is cohesive.

Es besteht die Möglichkeit, in den TPO-Kunststoff der Randfugenfüllungen Trocknungsmittel einzumischen, zum Beispiel in einer Menge von bis zu 20 Gew.-%.It is possible to mix drying agents into the TPO plastic of the edge joint fillings, for example in an amount of up to 20% by weight.

Die Randfugenfüllung kann aus zwei Strängen von unterschiedlichen TPO-Kunststoffen aus der Gruppe 1.1) bestehen, von denen zumindest einer nach Maßgabe des Auswahlkriteriums 1.2) ausgewählt ist. Sie können im Wege der Koextrusion hergestellt werden. Bei der Ausführungsform der Erfindung mit abstandsdefinierendem Hohlprofil können das Hohlprofil und die Randfugenfüllung durch Koextrusion vereinigt sein.The edge joint filling can consist of two strands of different TPO plastics from group 1.1), of which at least one is selected in accordance with selection criterion 1.2). They can be made by coextrusion. In the embodiment of the invention with a distance-defining hollow profile, the hollow profile and the edge joint filling can be combined by coextrusion.

Die erfindungsgemäßen Isolierglaseinheiten genügen langzeitig dem eingangs beschriebenen komplexen Beanspruchungsspektrum.Sie bestehen ohne weiteres die Zeitstandsprüfungen nach DIN 1286, Teil 1 und Teil 2. Sie bestehen aber auch die üblichen Klimawechselteste, Tieftemperaturteste, Hochtemperaturteste und Druckwechselteste.The insulating glass units according to the invention meet the complex stress range described at the beginning for a long time. They easily pass the creep tests according to DIN 1286, part 1 and part 2. They also pass the usual climatic changes, low temperature tests, high temperature tests and pressure changes tests.

Folgende Tests konnten erfolgreich durchgeführt werden: Klimawechseltest nach DIN 52344, Zeitstandverhalten nach DIN 1286 Teil 1, Tieftemperaturtest bis -40° C, Hochtemperaturtest bis 105° C, Druckwechseltest zwischen 1000 und 580 mbar mit 1000 Zyklen, Druckdauertest bei 580 mbar, Wasserbadwechseltest 25° C/80° C mit 5000 Zyklen, bei Kraftfahrzeugen Simulationstest in bezug auf Türzuschlagen bei tiefen und hohen Temperaturen, z. B. bei 20° C mit 40000 Zyklen.The following tests were successfully carried out: Climate change test according to DIN 52344, creep behavior according to DIN 1286 part 1, low temperature test down to -40 ° C, high temperature test up to 105 ° C, pressure change test between 1000 and 580 mbar with 1000 cycles, pressure duration test at 580 mbar, water bath change test 25 ° C / 80 ° C with 5000 cycles, for motor vehicles simulation test with regard to door slamming at low and high temperatures, e.g. B. at 20 ° C with 40,000 cycles.

Claims (8)

Isolierglaseinheit mit einer Innenscheibe, einer Außenscheibe und einer randseitig umlaufenden Randfuge mit Randfugenfüllung, die zur Aufnahme komplexer Beanspruchungen bei Verwendung der Isolierglaseinheit im Baubereich sowie auch zur Aufnahme von mechanischen Beanspruchungen, z.B. in Form von Erschütterungen und Schwingungen, geeignet ist, wobei die folgenden Merkmale verwirklicht sind: 1.1) Die Randfugenfüllung besteht aus einem thermoplastischen Elastomer aus der Gruppe der Polyolefin-Mischungen (TPO), 1.2) der TPO-Kunststoff ist aus der Gruppe gemäß 1.1) so ausgewählt bzw. gemischt, daß die Randfugenfüllung die folgenden Eigenschaften aufweist: Wasserdampfdurchlässigkeitsrate (ASTM-F1249) < 1 g.mm/mm2.d Zugfestigkeit (DIN 53504) > 4 N/mm2 50 % Zug-Modul (DIN 53504) > 1 N/mm2 Shore Härte (DIN 53505) > 50 A,
1.3) die Randfugenfüllung ist durch Extrudieren oder Stranggießen als Strang mit einer Abschlußsichtfläche geformt, wobei der Verbund der Randfugenfüllung mit der Innenscheibe und der Außenscheibe als eine adhäsive Druck/Wärme-Verbindung ausgeführt ist und wobei die Abschlußsichtfläche nacharbeitsfrei mit der Kante von zumindest einer der Glasscheiben bündig verpreßt ist.Insulating glass unit with an inner pane, an outer pane and a peripheral edge joint filled with edge joints, which is suitable for absorbing complex stresses when using the insulating glass unit in the construction area and also for absorbing mechanical stresses, e.g. in the form of vibrations and vibrations, whereby the following features are realized are: 1.1) The edge joint filling consists of a thermoplastic elastomer from the group of polyolefin mixtures (TPO), 1.2) The TPO plastic is selected or mixed from the group according to 1.1) so that the edge joint filling has the following properties: Water vapor transmission rate (ASTM-F1249) <1 g.mm/mm 2 .d Tensile strength (DIN 53504) > 4 N / mm 2 50% tension module (DIN 53504) > 1 N / mm 2 Shore hardness (DIN 53505) > 50 A,
1.3) the edge joint filling is formed by extrusion or continuous casting as a strand with a final visible surface, wherein the bond of the edge joint filling with the inner pane and the outer pane is designed as an adhesive pressure / heat connection and wherein the final visible surface is pressed flush with the edge of at least one of the glass panes without any reworking. Isolierglaseinheit nach Anspruch 1, wobei der TPO-Kunststoff gemäß Merkmal 1.2) so ausgewählt bzw. gemischt ist, daß die Randfugenfüllung die folgenden Eigenschaften aufweist: Wasserdampfdurchlässigkeitsrate < 1 g.mm/mm2.d Zugfestigkeit > 1,0 N/mm2 50 % Zug-Modul > 0,5 N/mm2 Shore Härte > 40 A.
Insulating glass unit according to claim 1, wherein the TPO plastic is selected or mixed according to feature 1.2) so that the edge joint filling has the following properties: Water vapor transmission rate <1 g.mm/mm 2 .d tensile strenght > 1.0 N / mm 2 50% train module > 0.5 N / mm 2 Shore hardness > 40 A.
Isolierglaseinheit nach einem der Ansprüche 1 oder 2, wobei der TPO-Kunststoff aus der Gruppe 1.1) oder Mischungen davon nach Maßgabe des Auswahlkriteriums 1.2) für eine haftvermittlerfreie Druck/Wärme-Verbindung ausgewählt ist.Insulating glass unit according to one of claims 1 or 2, wherein the TPO plastic from group 1.1) or mixtures thereof is selected in accordance with the selection criterion 1.2) for an adhesive-free pressure / heat connection. Isolierglaseinheit nach einem der Ansprüche 1 oder 2, wobei der TPO-Kunststoff aus der Gruppe 1.1) oder Mischungen davon nach Maßgabe des Auswahlkriteriums 1.2) für eine Druck/Wärme-Verbindung mit Zwischenschaltung eines auf die Glasscheiben aufgebrachten Haftvermittlers der Gruppe "Polyurethan-Systeme, Polyethylen- und PolypropylenSysteme, Ethylen-Vinylacetate" oder Mischungen davon ausgewählt ist.Insulating glass unit according to one of claims 1 or 2, wherein the TPO plastic from group 1.1) or mixtures thereof in accordance with the selection criterion 1.2) for a pressure / heat connection with the interposition of an adhesion promoter of the group "polyurethane systems applied to the glass panes, Polyethylene and polypropylene systems, ethylene vinyl acetate "or mixtures thereof is selected. Verwendung einer Isolierglaseinheit nach einem der Ansprüche 1 bis 4 für den Baubereich mit der Maßgabe, daß die Isolierglaseinheit mit einer Innenscheibe, einer Außenscheibe und einem randseitig unter Bildung der Randfuge umlaufenden, als Hohlprofil ausgeführtem Abstandshalter sowie der zusätzlichen Randfugenfüllung ausgerüstet ist.Use of an insulating glass unit according to one of claims 1 to 4 for the construction sector with the proviso that the insulating glass unit is equipped with an inner pane, an outer pane and a spacer running around the edge to form the edge joint, designed as a hollow profile, and the additional edge joint filling. Verwendung nach Anspruch 5 mit der Maßgabe, daß das Hohlprofil aus Polypropylen aufgebaut ist.Use according to claim 5 with the proviso that the hollow profile is constructed from polypropylene. Verwendung nach Anspruch 5 mit der Maßgabe, daß das Hohlprofil aus glasfaserverstärktem Kunststoff aufgebaut ist.Use according to claim 5 with the proviso that the hollow profile is constructed from glass fiber reinforced plastic. Verwendung einer Isolierglaseinheit nach einem der Ansprüche 1 bis 4 mit der Maßgabe, daß die Randfugenfüllung auch als Abstandshalter dient.Use of an insulating glass unit according to one of claims 1 to 4 with the proviso that the edge joint filling also serves as a spacer.
EP95120409A 1994-12-29 1995-12-22 Insulated glazing unit Expired - Lifetime EP0719904B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19944447049 DE4447049A1 (en) 1994-12-29 1994-12-29 Glass insulating unit, e.g. for buildings or cars
DE19944447059 DE4447059A1 (en) 1994-12-29 1994-12-29 Glass insulating unit, e.g. for buildings or cars
DE4447049 1994-12-29
DE4447059 1994-12-29

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EP0811656A1 (en) * 1995-12-26 1997-12-10 Asahi Glass Company Ltd. Resin composition for building materials and double-glazed unit
WO1997049887A1 (en) * 1996-06-27 1997-12-31 Flachglas Aktiengesellschaft Insulating glass unit
WO2001016046A1 (en) * 1999-09-01 2001-03-08 Prc-Desoto International, Inc. Insulating glass unit with structural primary sealant system

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FR2684131A1 (en) * 1991-11-25 1993-05-28 Standard Products Atlantic Method of manufacturing flush double glazing for a motor vehicle

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DE2752542A1 (en) * 1976-11-26 1978-06-01 Bfg Glassgroup METHOD OF MANUFACTURING A HOLLOW GLASS PANEL AND THE PRODUCT OBTAINED THEREOF
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FR2684131A1 (en) * 1991-11-25 1993-05-28 Standard Products Atlantic Method of manufacturing flush double glazing for a motor vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0811656A1 (en) * 1995-12-26 1997-12-10 Asahi Glass Company Ltd. Resin composition for building materials and double-glazed unit
EP0811656A4 (en) * 1995-12-26 1999-03-10 Asahi Glass Co Ltd Resin composition for building materials and double-glazed unit
US6235356B1 (en) 1995-12-26 2001-05-22 Asahi Glass Company Ltd. Resin composition for building materials and insulating glass
WO1997049887A1 (en) * 1996-06-27 1997-12-31 Flachglas Aktiengesellschaft Insulating glass unit
WO2001016046A1 (en) * 1999-09-01 2001-03-08 Prc-Desoto International, Inc. Insulating glass unit with structural primary sealant system
US6457294B1 (en) 1999-09-01 2002-10-01 Prc-Desoto International, Inc. Insulating glass unit with structural primary sealant system
US6796102B2 (en) 1999-09-01 2004-09-28 Prc-Desoto International, Inc. Insulating glass unit with structural primary sealant system

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