EP0014235B1 - Insulating glass pane - Google Patents

Insulating glass pane Download PDF

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Publication number
EP0014235B1
EP0014235B1 EP79104543A EP79104543A EP0014235B1 EP 0014235 B1 EP0014235 B1 EP 0014235B1 EP 79104543 A EP79104543 A EP 79104543A EP 79104543 A EP79104543 A EP 79104543A EP 0014235 B1 EP0014235 B1 EP 0014235B1
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EP
European Patent Office
Prior art keywords
panes
insulating glass
pane
inner pane
extruded
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.)
Expired
Application number
EP79104543A
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German (de)
French (fr)
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EP0014235A1 (en
Inventor
Theodor Peter Mönch
Friedrich Hanstein
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Roehm GmbH Darmstadt
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Roehm GmbH Darmstadt
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Application filed by Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Priority to AT79104543T priority Critical patent/ATE681T1/en
Publication of EP0014235A1 publication Critical patent/EP0014235A1/en
Application granted granted Critical
Publication of EP0014235B1 publication Critical patent/EP0014235B1/en
Expired legal-status Critical Current

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    • 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
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light

Definitions

  • Insulating glass panes with an air space enclosed between two outer panes have a significantly lower heat transfer coefficient than single panes. Values of less than 2.0 kcal / M 2 h ° C, which are already a legal requirement for building glazing in some countries, can only be achieved with composite panes that are made up of at least three individual panes and contain at least two air spaces enclosed between them.
  • connection of three or more individual panes of mineral glass to form an insulating glass pane is technically possible without any problems, but such insulating glass panes have an undesirably high weight.
  • the weight increases by 50% when a third pane is inserted and by 100% when a fourth pane is inserted.
  • the high weight is not only annoying when transporting and installing the panes, but also requires correspondingly stable frames.
  • the weight gain can be reduced if you insert a plastic inner pane.
  • a weight gain of 20 to 30% for an additional plastic disc or 30 to 40% for two additional plastic discs 3 mm thick must also be expected.
  • Thin intermediate layers are in themselves sufficient to improve the thermal insulation, but for technical reasons it has not yet been possible to implement them easily. For example, it is very difficult to install plastic films that do not have sufficient inherent rigidity in the required dimensions between two outer panes without creases.
  • a sufficient inherent rigidity of plastic layers is only given from a thickness of 1 mm. However, such plastic disks were not accessible in a satisfactory optical quality at a price that was acceptable for the intended purpose.
  • the price of cast acrylic glass panes of about 1 mm thickness excludes their use in insulating glass panes.
  • Extruded acrylic glass panes of the same thickness are sensitive to breakage and are therefore not manufactured. Therefore, only extruded plastic panes, in particular acrylic glass panes of at least 3 mm in thickness, were suitable as the material for the intermediate layer. However, the price and weight of insulating glass panes produced with it are still undesirably high.
  • the invention has for its object to significantly reduce the weight of at least three-layer insulating glass panes using technically easy to manufacture and therefore inexpensive components.
  • a solution to this problem has been found in the design specified in the main claim.
  • an inner pane made of extruded, biaxially stretched plastic one can manage with a pane thickness that is significantly lower than that of conventional, i.e. H. non-stretched extruded plastic sheets without affecting the strength properties required for processing.
  • a significant improvement in the mechanical properties compared to non-stretched extruded plastic panes is achieved, for example, with biaxial stretching by 35% in each case; the preferred degree of stretching is 60 to 80%.
  • the weight increase compared to an insulating glass pane composed of only two mineral glass panes is only about 6 to 12%.
  • the weight gain is only 12 to 25%, while when used, non-stretched: Plastic discs of 3 mm in thickness gain 35 to 50% in weight.
  • extruded biaxially stretched plastic discs are possible in a simple manner, for example with the aid of the device described in DE-OA 2056697.
  • the stretched plastic disks of 1 to 2.5 mm thickness obtained which are characterized by high rigidity, tensile and flexural strength, can be produced at a lower cost than non-stretched, extruded plastic disks of greater thickness and comparable strength properties.
  • the preferred plastic for the inner pane is extruded biaxially stretched acrylic glass. It usually has a molecular weight of 100,000 to 250,000.
  • z. B polyvinyl chloride and polycarbonate.
  • Clearly transparent panes with plane-parallel surfaces are preferably used for the outer and inner panes.
  • the outer panes (1) and (2) are preferably made of mineral glass of conventional thickness. Depending on the size of the pane, the thickness is between 2.5 and 8 mm, for example. Another Ge weight savings can be achieved if plastic outer panes are used, for which the same thicknesses can be considered. Because of the lower surface hardness compared to mineral glass of suitable plastics, such as. B. acrylic glass or polycarbonate, scratch-resistant coated outer panes (1, 2) are appropriate. Scratch-resistant coatings are known per se and can be used e.g. B. based on silicone plastics or highly cross-linked organic polymers. The scratch-resistant layer usually has a thickness of approximately 10 ⁇ m. It can be located directly on the outer pane or on a removable plastic film that can be replaced if necessary. If the insulating glass pane is not exposed to the same stress on both sides during use, an outer layer can also consist of mineral glass and the other of scratch-resistant coated plastic.
  • An inner pane (3) or, if required, a further inner pane (4) is generally arranged in the interior of the insulating glass pane.
  • the spaces (5) between the individual panes are, for example, 5 to 15 mm thick.
  • the individual panes are connected to one another by means of adhesive layers (6) and frame elements (7) in such a way that the interior (5) is hermetically sealed from the atmosphere.
  • Edge elements of this type are customary in the production of insulating glass panes and contain a filling (8) made of a desiccant on the inside, which absorbs moisture from the gas filling enclosed in the intermediate space (5) by means of a perforation or a slot (9).
  • the outer panes (1, 2) are made of mineral glass, soft elastic adhesive layers (6) are used. Since plastics have a significantly higher thermal expansion than mineral glass, the edge of the plastic panes (3, 4) performs greater thermal expansion and contraction movements than the mineral glass panes (1, 2).
  • the outer panes (1, 2) can also be connected to frame elements (10) which have a groove (1) on the inside of such a depth that sufficient expansion space is available for the sliding inner pane (3) stands.

Abstract

1. Insulating glass sheet, consisting of two outer panes, at least one inner pane of plastics material arranged at a spacing therefrom, and frame elements which hold the panes together and hermetically seal the interstices between the inner pane and outer panes, characterized in that the inner pane consists of extruded, biaxially stretched plastics material.

Description

Isolierglasscheiben mit einem zwischen zwei Aussenscheiben eingeschlossenen Luftraum haben eine wesentlich niedrigere Wärmedurchgangszahl als Einfachscheiben. Werte von weniger als 2,0 kcal/M 2h °C, die in einigen Ländern bereits gesetzliche Vorschrift für Gebäudeverglasungen sind, lassen sich erst mit Verbundscheiben erreichen, die aus wenigstens drei Einzelscheiben aufgebaut sind und wenigstens zwei dazwischen eingeschlossene Lufträume enthalten.Insulating glass panes with an air space enclosed between two outer panes have a significantly lower heat transfer coefficient than single panes. Values of less than 2.0 kcal / M 2 h ° C, which are already a legal requirement for building glazing in some countries, can only be achieved with composite panes that are made up of at least three individual panes and contain at least two air spaces enclosed between them.

Die Verbindung von drei oder mehr Einzelscheiben aus Mineralglas zu einer Isolierglasscheibe ist technisch ohne weiteres möglich, jedoch haben derartige Isolierglasscheiben ein unerwünscht hohes Gewicht. Gegenüber einer aus zwei Einzelscheiben aufgebauten Isolierglasscheibe nimmt das Gewicht bei Einfügung einer dritten Scheibe um 50% und bei einer vierten Scheibe um 100% zu. Das hohe Gewicht ist nicht nur beim Transport und Einbau der Scheiben störend, sondern erfordert auch entsprechend stabile Rahmen.The connection of three or more individual panes of mineral glass to form an insulating glass pane is technically possible without any problems, but such insulating glass panes have an undesirably high weight. Compared to an insulating glass pane made up of two individual panes, the weight increases by 50% when a third pane is inserted and by 100% when a fourth pane is inserted. The high weight is not only annoying when transporting and installing the panes, but also requires correspondingly stable frames.

Die Gewichtszunahme lässt sich vermindern, wenn man eine Innenscheibe aus Kunststoff einfügt. Jedoch muss man auch dann mit einer Gewichtszunahme von 20 bis 30% für eine zusätzliche Kunststoffscheibe bzw. 30 bis 40% für zwei zusätzliche Kunststoffscheiben von 3 mm Dicke rechnen. Für die Verbesserung der Wärmeisolierung sind dünne Zwischenschichten an sich ausreichend, liessen sich jedoch aus technischen Gründen bisher nicht ohne weiteres verwirklichen. So bereitet es erhebliche Schwierigkeiten, Kunststoffolien, die in den erforderlichen Abmessungen keine ausreichende Eigensteifigkeit haben, faltenfrei zwischen zwei Aussenscheiben einzubauen. Erst ab einer Dicke von 1 mm ist eine ausreichende Eigensteifigkeit von Kunststoffschichten gegeben. Derartige Kunststoffscheiben waren jedoch zu einem für den vorgesehenen Zweck tragbaren Preis in befriedigender optischer Qualität nicht zugänglich. Der Preis von gegossenen Acrylglasscheiben von etwa 1 mm Stärke schliesst ihre Verwendung in Isolierglasscheiben aus. Extrudierte Acrylglasscheiben von gleicher Stärke sind bruchempfindlich und werden aus diesem Grund nicht hergestellt. Daher boten sich nur extrudierte Kunststoffscheiben, insbesondere Acrylglasscheiben von mindestens 3 mm Dicke als Material für die Zwischenschicht an. Preis und Gewicht von damit hergestellten Isolierglasscheiben sind jedoch immer noch unerwünscht hoch.The weight gain can be reduced if you insert a plastic inner pane. However, a weight gain of 20 to 30% for an additional plastic disc or 30 to 40% for two additional plastic discs 3 mm thick must also be expected. Thin intermediate layers are in themselves sufficient to improve the thermal insulation, but for technical reasons it has not yet been possible to implement them easily. For example, it is very difficult to install plastic films that do not have sufficient inherent rigidity in the required dimensions between two outer panes without creases. A sufficient inherent rigidity of plastic layers is only given from a thickness of 1 mm. However, such plastic disks were not accessible in a satisfactory optical quality at a price that was acceptable for the intended purpose. The price of cast acrylic glass panes of about 1 mm thickness excludes their use in insulating glass panes. Extruded acrylic glass panes of the same thickness are sensitive to breakage and are therefore not manufactured. Therefore, only extruded plastic panes, in particular acrylic glass panes of at least 3 mm in thickness, were suitable as the material for the intermediate layer. However, the price and weight of insulating glass panes produced with it are still undesirably high.

Der Erfindung liegt die Aufgabe zugrunde, das Gewicht von wenigstens dreischichtigen Isolierglasscheiben unter Verwendung von technisch leicht herstellbaren und daher preisgünstigen Komponenten wesentlich herabzusetzen. Eine Lösung dieser Aufgabe wurde in der im Hauptanspruch angegebenen Gestaltung gefunden. Durch die Verwendung einer Innenscheibe aus extrudiertem, biaxial gerecktem Kunststoff kommt man mit einer Scheibendicke aus, die wesentlich unter derjenigen von herkömmlichen, d. h. nicht-gereckten extrudierten Kunststoffscheiben liegt, ohne dass die für die Verarbeitung erforderlichen Festigkeitseigenschaften beeinträchtigt sind. Eine wesentliche Verbesserung der mechanischen Eigenschaften gegenüber nicht-gereckten extrudierten Kunststoffscheiben wird beispielsweise schon bei einer biaxialen Reckung um jeweils 35% erreicht; der bevorzugte Reckungsgrad liegt bei 60 bis 80%.The invention has for its object to significantly reduce the weight of at least three-layer insulating glass panes using technically easy to manufacture and therefore inexpensive components. A solution to this problem has been found in the design specified in the main claim. By using an inner pane made of extruded, biaxially stretched plastic, one can manage with a pane thickness that is significantly lower than that of conventional, i.e. H. non-stretched extruded plastic sheets without affecting the strength properties required for processing. A significant improvement in the mechanical properties compared to non-stretched extruded plastic panes is achieved, for example, with biaxial stretching by 35% in each case; the preferred degree of stretching is 60 to 80%.

Bei Verwendung einer Zwischenschicht aus extrudiertem, biaxial gerecktem Acrylglas von 1 bis 1,5 mm Dicke beträgt die Gewichtszunahme gegenüber einer aus nur zwei Mineralglasscheiben aufgebauten Isolierglasscheibe nur etwa 6 bis 12%. Bei Einfügung von zwei derartigen Innenscheiben beträgt die Gewichtszunahme nur 12 bis 25%, während bei Verwendung nicht-gereckte:. Kunststoffscheiben von 3 mm Dicke eine Gewichtszunahme um 35 bis 50% eintritt.When using an intermediate layer of extruded, biaxially stretched acrylic glass with a thickness of 1 to 1.5 mm, the weight increase compared to an insulating glass pane composed of only two mineral glass panes is only about 6 to 12%. When two such inner washers are inserted, the weight gain is only 12 to 25%, while when used, non-stretched: Plastic discs of 3 mm in thickness gain 35 to 50% in weight.

Die Herstellung von extrudierten biaxial gereckten Kunststoffscheiben ist, beispielsweise mit Hilfe der aus der DE-OA 2056697 beschriebenen Vorrichtung, auf einfache Weise möglich. Die erhaltenen gereckten Kunststoffscheiben von 1 bis 2,5 mm Dicke, die sich durch eine hohe Steifigkeit, Zug- und Biegefestigkeit auszeichnen, lassen sich zu geringeren Kosten herstellen als nicht-gereckte, extrudierte Kunststoffscheiben von grösserer Dicke und vergleichbaren Festigkeitseigenschaften. Der bevorzugte Kunststoff für die Innenscheibe ist extrudiertes biaxial gerecktes Acrylglas. Es hat in der Regel ein Molekulargewicht von 100.000 bis 250.000. Weiterhin kommen z. B. Polyvinylchlorid und Polycarbonat in Betracht. Vorzugsweise werden für die Aussen- und Innenscheiben klar durchsichtige Scheiben mit planparallelen Oberflächen verwendet.The production of extruded biaxially stretched plastic discs is possible in a simple manner, for example with the aid of the device described in DE-OA 2056697. The stretched plastic disks of 1 to 2.5 mm thickness obtained, which are characterized by high rigidity, tensile and flexural strength, can be produced at a lower cost than non-stretched, extruded plastic disks of greater thickness and comparable strength properties. The preferred plastic for the inner pane is extruded biaxially stretched acrylic glass. It usually has a molecular weight of 100,000 to 250,000. Furthermore, z. B. polyvinyl chloride and polycarbonate. Clearly transparent panes with plane-parallel surfaces are preferably used for the outer and inner panes.

Wenn trotz der erreichbaren Vorteile lsolierglasscheiben mit dem erfindungsgemässen Aufbau bisher nicht bekannt geworden sind, so kann dies nur darauf zurückgeführt werden, dass die erreichbaren Vorteile für den Fachmann nicht erkennbarwaren.If, despite the achievable advantages, insulating glass panes with the structure according to the invention have not hitherto become known, this can only be attributed to the fact that the achievable advantages were not recognizable to the person skilled in the art.

Zweckmässige Ausführungsformen der Erfindung sind in den Figuren 1 bis 3 dargestellt.

  • Figur 1 stellt in verkürzter Schnittdarstellung eine aus drei Einzelscheiben aufgebaute Isolierglasscheibe dar.
  • Figur 2 stellt in gleicher Darstellungsweise eine Isolierglasscheibe aus vier Einzelscheiben dar.
  • Figur 3 zeigt eine andere Gestaltung der Rahmenelemente.
Practical embodiments of the invention are shown in FIGS. 1 to 3.
  • FIG. 1 shows a shortened sectional view of an insulating glass pane constructed from three individual panes.
  • FIG. 2 shows an insulating glass pane made of four individual panes in the same representation.
  • Figure 3 shows a different design of the frame elements.

Die Aussenscheiben (1) und (2) bestehen vorzugsweise aus Mineralglas von üblicher Dicke. Je nach Scheibengrösse liegt die Dicke beispielsweise zwischen 2,5 und 8 mm. Eine weitere Gewichtseinsparung ist erreichbar, wenn man Aussenscheiben aus Kunststoff verwendet, wofür etwa die gleichen Dicken in Betracht kommen. Wegen der gegenüber Mineralglas geringeren Oberflächenhärte der geeigneten Kunststoffe, wie z. B. Acrylglas oder Polycarbonat, sind kratzfest beschichtete Aussenscheiben (1, 2) zweckmässig. Kratzfeste Beschichtungen sind an sich bekannt und lassen sich z. B. auf Basis von Silikon-Kunststoffen oder hochvernetzten organischen Polymeren herstellen. Die kratzfeste Schicht hat in der Regel eine Dicke von etwa 10 µm. Sie kann sich unmittelbar auf der Aussenscheibe befinden oder auf einer ablösbar aufgeklebten Kunststoffolie, die bei Bedarf ersetzbar ist. Wenn die isolierglasscheibe im Gebrauch nicht auf beiden Seiten der gleichen Beanspruchung ausgesetzt ist, kann auch eine Aussenschicht aus Mineralglas und die andere aus kratzfest beschichtetem Kunststoff bestehen.The outer panes (1) and (2) are preferably made of mineral glass of conventional thickness. Depending on the size of the pane, the thickness is between 2.5 and 8 mm, for example. Another Ge weight savings can be achieved if plastic outer panes are used, for which the same thicknesses can be considered. Because of the lower surface hardness compared to mineral glass of suitable plastics, such as. B. acrylic glass or polycarbonate, scratch-resistant coated outer panes (1, 2) are appropriate. Scratch-resistant coatings are known per se and can be used e.g. B. based on silicone plastics or highly cross-linked organic polymers. The scratch-resistant layer usually has a thickness of approximately 10 µm. It can be located directly on the outer pane or on a removable plastic film that can be replaced if necessary. If the insulating glass pane is not exposed to the same stress on both sides during use, an outer layer can also consist of mineral glass and the other of scratch-resistant coated plastic.

Im Innern der Isolierglasscheibe ist in der Regel eine Innenscheibe (3) oder bei Bedarf eine weitere Innenscheibe (4) angeordnet Die Zwischenräume (5) zwischen den Einzelscheiben sind beispielsweise 5 bis 15 mm dick.An inner pane (3) or, if required, a further inner pane (4) is generally arranged in the interior of the insulating glass pane. The spaces (5) between the individual panes are, for example, 5 to 15 mm thick.

Am Rand sind die Einzelscheiben mittels Klebschichten (6) und Rahmenelementen (7) miteinander in der Weise verbunden, dass die Innenräume (5) von der Atmosphäre hermetisch abgeschlossen sind. Derartige Randelemente sind bei der Herstellung von Isolierglasscheiben gebräuchlich und enthalten im Innern eine Füllung (8) aus einem Trockenmittel, welches durch eine Perforierung oder einen Schlitz (9) Feuchtigkeit aus der in dem Zwischenraum(5) eingeschlossenen Gasfüllung aufnimmt. Wenn die Aussenscheiben (1, 2) aus Mineralglas bestehen, werden weichelastische Klebschichten (6) verwendet. Da Kunststoffe eine wesentlich höhere thermische Ausdehnung als Mineralglas haben, führt der Rand der Kunststoffscheiben (3, 4) grössere thermische Expansions- und Kontraktionsbewegungen durch als die Mineralglasscheiben (1, 2). Die Differenzen dieser Bewegungen müssen durch Scherbewegungen in den Klebschichten (6) aufgenommen werden. Um derartige Scherbewegungen auszuschliessen, kann man auch die Aussenscheiben (1, 2) mit Rahmenelementen (10) verbinden, welche an der Innenseite eine Nut (1) von solcher Tiefe aufweisen, dass für die gleitend eingesetzte Innenscheibe (3) ein ausreichender Expansionsraum zur Verfügung steht.At the edge, the individual panes are connected to one another by means of adhesive layers (6) and frame elements (7) in such a way that the interior (5) is hermetically sealed from the atmosphere. Edge elements of this type are customary in the production of insulating glass panes and contain a filling (8) made of a desiccant on the inside, which absorbs moisture from the gas filling enclosed in the intermediate space (5) by means of a perforation or a slot (9). If the outer panes (1, 2) are made of mineral glass, soft elastic adhesive layers (6) are used. Since plastics have a significantly higher thermal expansion than mineral glass, the edge of the plastic panes (3, 4) performs greater thermal expansion and contraction movements than the mineral glass panes (1, 2). The differences between these movements must be absorbed by shear movements in the adhesive layers (6). In order to exclude such shear movements, the outer panes (1, 2) can also be connected to frame elements (10) which have a groove (1) on the inside of such a depth that sufficient expansion space is available for the sliding inner pane (3) stands.

Claims (6)

1. Insulating glass sheet, consisting of two outer panes,at leastone inner pane of plasticsma- ierial arranged at a spacing therefrom, and frame elements which hold the panes together and hermetically seal the interstices between the inner pane and outer panes, characterised in that the inner pane consists of extruded, biaxially stretched plastics material.
2. Insulating glass sheet according to claim 1, characterised in that the inner pane is biaxially stretched by at least 35% in each direction.
3. Insulating glass sheet according to claims 1 and 2, characterised in that the inner pane consists of extruded, biaxially stretched acrylic glass.
4. Insulating glass sheet according to claims 1 to 3, characterised in that the inner panes are thinner than the outer panes and are 1 to 2.5 mm thick.
5. Insulating glass according to claims to 4, characterised in that at least one outer pane consists of mineral glass.
6. Insulating glass according to claims 1 to 5, characterised in that at least one outer pane consists of plastics material with a scratch-resistant coating.
EP79104543A 1979-02-05 1979-11-16 Insulating glass pane Expired EP0014235B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104543T ATE681T1 (en) 1979-02-05 1979-11-16 INSULATING GLASS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2904280 1979-02-05
DE19792904280 DE2904280A1 (en) 1979-02-05 1979-02-05 INSULATED GLASS PANEL

Publications (2)

Publication Number Publication Date
EP0014235A1 EP0014235A1 (en) 1980-08-20
EP0014235B1 true EP0014235B1 (en) 1982-02-10

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ID=6062192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104543A Expired EP0014235B1 (en) 1979-02-05 1979-11-16 Insulating glass pane

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EP (1) EP0014235B1 (en)
AT (1) ATE681T1 (en)
DE (2) DE2904280A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3049356C2 (en) * 1980-12-29 1985-04-18 Eduard 5024 Pulheim Mrachacz Double glazing
DE3139414A1 (en) * 1981-10-03 1983-04-21 Eurosett-Fenster S.à.r.l., Luxembourg Insulating glass unit
DE3419977A1 (en) * 1984-05-29 1985-12-05 Carl 6957 Elztal Schmitt Transparent cover panel for freezer chests which are open at the top
DE4300481A1 (en) * 1993-01-11 1994-07-14 Kunert Heinz Frameless double glazing and process for its production
DE4300480A1 (en) * 1993-01-11 1994-07-14 Kunert Heinz Safety glass element with thermal insulation properties
CH688059A5 (en) * 1994-07-26 1997-04-30 Matec Holding Ag Double glazing.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638327A (en) * 1963-10-08
DE2056697A1 (en) * 1970-11-18 1972-06-15 Roehm Gmbh Device for stretching thermoplastics
CA1116069A (en) * 1978-01-05 1982-01-12 Richard R. Dahlen Solar control film having insulative properties

Also Published As

Publication number Publication date
EP0014235A1 (en) 1980-08-20
DE2962103D1 (en) 1982-03-18
DE2904280A1 (en) 1980-08-14
ATE681T1 (en) 1982-02-15

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