EP3891353B1 - Method and device for producing thermoplastic spacers - Google Patents

Method and device for producing thermoplastic spacers Download PDF

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Publication number
EP3891353B1
EP3891353B1 EP19731918.9A EP19731918A EP3891353B1 EP 3891353 B1 EP3891353 B1 EP 3891353B1 EP 19731918 A EP19731918 A EP 19731918A EP 3891353 B1 EP3891353 B1 EP 3891353B1
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EP
European Patent Office
Prior art keywords
spacer
clearance
cover plates
shuttering
glass pane
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EP19731918.9A
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German (de)
French (fr)
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EP3891353A1 (en
Inventor
Manuel SCHÖRGHUBER
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Lisec Austria GmbH
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Lisec Austria GmbH
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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
    • E06B3/663—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
    • E06B3/673—Assembling the units
    • E06B3/67326—Assembling spacer elements with the panes
    • E06B3/6733—Assembling spacer elements with the panes by applying, e.g. extruding, a ribbon of hardenable material on or between the panes

Definitions

  • the invention relates to a method having the features of the introductory part of claim 1.
  • thermoplastic spacers are also used, which are applied either as prefabricated strands or in situ to one of the glass panes of the insulating glass.
  • thermoplastic spacers Connecting the ends of thermoplastic spacers is problematic because problems with tightness and air inclusions can arise in the area of the connected ends.
  • thermoplastic spacers Various proposals for connecting the ends of thermoplastic spacers are known from the state of the art.
  • AT 391 681 B A method and a device for closing openings in spacers are known in which plastic closing compound is pressed from a nozzle into the openings.
  • a method and a device for applying a plastic spacer to a glass panel are known, in which the ends of the strand forming the spacer are tapered in a wedge shape, so that between the ends of the spacer applied to the glass pane there is an abutment surface which is inclined to the longitudinal direction of the spacer.
  • a device for forming corners and for pressing the ends of a flexible spacer that is placed on a glass panel has a clamp that can be pivoted through 90°, whereby one of the two clamping jaws presses the section of the spacer held by the clamp against an abutment when the clamp is pivoted.
  • a pressure stamp that can be pushed forward transversely to the glass panel is provided, which presses the bent end of the spacer against the glass panel.
  • a perforation tool can be provided on the clamp device, which perforates the spacer when it is held by the clamp.
  • DE 24 5 707 A1 discloses a method for producing multi-pane insulating glass, in which two panes of glass are kept at a distance by a spacer running around the edge of the panes, whereby a narrow strip of glass remains free up to the edge of the pane for a sealing compound to fill the sealing space thus formed.
  • a closure is attached around the edge of the pane, sealing the sealing space against the outer surfaces of the panes of glass, with at least one opening through which the sealing compound can then be introduced into is introduced in liquid form while air escapes from one or more openings until the sealing space is completely filled and the sealing compound sets.
  • EP 1 018 590 A2 relates to a method for producing a spacer made of thermoplastic material on glass panes during the production of insulating glass panes, in which thermoplastic material is sprayed along the edge of the glass pane and in the form of a strand onto the glass pane.
  • the invention is based on the object of providing a method of the type mentioned at the outset with which the ends of spacers made of thermoplastic material can be connected in the area of corners without any problems and reliably.
  • the invention is also based on the object of providing a device with which the method can be carried out.
  • the object underlying the invention is also achieved with a device which has the features of the independent claim directed to the device.
  • thermoplastic material is introduced, in particular injected, into the ends of a spacer made of thermoplastic material, not only is air channels reliably avoided, but a visually improved appearance of the area between the ends of a spacer made of thermoplastic material is also achieved.
  • One advantage of the method according to the invention is that it can be used without any problems in the area of spacer corners. It is advantageous that even sharp corners of spacers can be formed.
  • the material which connects the ends of the spacer made of thermoplastic material to one another is introduced, for example injected, into a formwork made of panels, the connection, which is often unsatisfactory in the prior art, is also optically flawless.
  • the method according to the invention also avoids inaccuracies in dosing, which could result in a break in the spacer if underdosed (leading to a leaky insulating glass element). Overdosing is also avoided. This avoids overdosing of the material introduced between the ends of the spacer, which could cause problems during the subsequent sealing of insulating glass blanks.
  • the method is used for in situ applied spacers made of thermoplastic material.
  • the mass introduced into the area between the ends of the spacer can also be a thermoplastic material or a plastic material which is mixed with the mass from which the spacer is formed. is compatible.
  • a glass pane 1 is shown, onto which a spacer 2 is applied.
  • the spacer 2 consists essentially of thermoplastic material and is produced in situ, ie it is sprayed directly onto the glass pane 1.
  • the spacer 2 can be a prefabricated strand of (thermoplastic) material that has been applied to the glass pane 1.
  • This free space 4 is formed, for example, by stopping the application of the plastic strand forming the spacer 2 a little before the start of the application. This creates a free space 4 that has a length of 30 mm, for example.
  • the free space 4 between the ends 3 of the spacer 2 is in the region of a corner of the glass pane 1.
  • a free space 4 between ends 3 of a spacer 2 can be present not only at the beginning and at the end of an otherwise closed spacer 2, but also in other sections of spacers 2 that have been applied (for example sprayed on) to a glass pane 1.
  • a formwork 8 is now arranged in the area of the free space 4 between the ends 3 of the spacer 2.
  • a lateral cover plate 5 is first attached to one side, in particular the outside, of the spacer 2, adjacent to the side thereof.
  • a further cover plate 6 is attached to the other side, in particular the inside, of the spacer 2, adjacent to the side thereof.
  • an upper cover plate 7 (stamp) is inserted between the areas of the cover plates 5 and 6 that protrude from the glass pane 1 beyond the spacer 2 and is moved until it rests against the free surfaces 10 of the spacer 2 facing away from the glass pane 1.
  • a formwork 8 (this forms a mold with a mold cavity which is delimited by the cover plates 5, 6 and 7, by the ends 3 of the spacer 2 and by the glass pane 1) which surrounds the free space 4 between the ends 3 of the spacer 2, thermoplastic material is introduced, for example injected, through the line 9 which is connected to the upper cover plate 7 and extends through it, into the free space 4 enclosed by the formwork 8 (i.e. into the mold cavity).
  • the side cover plates 5 and 6 may be strip-shaped ribs 11 rest against the glass pane 1.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)

Description

Die Erfindung betrifft ein Verfahren mit den Merkmalen des einleitenden Teils von Anspruch 1.The invention relates to a method having the features of the introductory part of claim 1.

Beim Herstellen von Isolierglas werden - abgesehen von Abstandhalterrahmen, die von Metallhohlprofilen gebildet sind - auch thermoplastische Abstandhalter verwendet, die entweder als vorgefertigte Stränge oder in situ auf eine der Glasscheiben des Isolierglases aufgebracht ("appliziert") werden.In the manufacture of insulating glass, apart from spacer frames formed from hollow metal profiles, thermoplastic spacers are also used, which are applied either as prefabricated strands or in situ to one of the glass panes of the insulating glass.

Problematisch ist das Verbinden von Enden thermoplastischer Abstandhalter, da im Bereich der miteinander verbundenen Enden Probleme mit der Dichtheit und mit Lufteinschlüssen entstehen können.Connecting the ends of thermoplastic spacers is problematic because problems with tightness and air inclusions can arise in the area of the connected ends.

Aus dem Stand der Technik sind verschiedene Vorschläge für das Verbinden der Enden thermoplastischer Abstandhalter bekannt. Aus AT 391 681 B sind ein Verfahren und eine Vorrichtung zum Verschließen von Öffnungen in Abstandhaltern bekannt, bei welchen plastische Verschlussmasse aus einer Düse in die Öffnungen gepresst wird.Various proposals for connecting the ends of thermoplastic spacers are known from the state of the art. AT 391 681 B A method and a device for closing openings in spacers are known in which plastic closing compound is pressed from a nozzle into the openings.

Aus DE 44 33 749 A1 sind ein Verfahren und eine Vorrichtung zum Auftragen eines plastischen Abstandhalters auf eine Glastafel bekannt, bei welchen die Enden des den Abstandhalter bildenden Stranges sich keilförmig verjüngend ausgebildet sind, so dass zwischen den Enden des auf die Glasscheibe aufgebrachten Abstandhalters eine zur Längsrichtung des Abstandhalters schräge Stoßfläche vorliegt.Out of DE 44 33 749 A1 A method and a device for applying a plastic spacer to a glass panel are known, in which the ends of the strand forming the spacer are tapered in a wedge shape, so that between the ends of the spacer applied to the glass pane there is an abutment surface which is inclined to the longitudinal direction of the spacer.

Ähnliche Vorschläge sind aus DE 10 2014 115 218 B3 und aus DE 10 2015 122 882 A1 bekannt.Similar proposals are from EN 10 2014 115 218 B3 and from EN 10 2015 122 882 A1 known.

Aus DE 10 2005 044 860 A1 ist ein Verfahren zum Herstellen von Isolierglas bekannt, bei dem Abstandhalter aus einem vorgefertigten Strang aus Kunststoff verwendet werden. Zwischen Anfang und Ende des Stranges soll zwischen die Endflächen des Stranges Dichtmasse eingepresst werden.Out of EN 10 2005 044 860 A1 is a process for producing Insulating glass is known in which spacers made from a prefabricated plastic strand are used. Between the beginning and the end of the strand, sealing compound is to be pressed in between the end surfaces of the strand.

Aus AT 390 946 B ist eine Vorrichtung zum Ausbilden von Ecken und zum Verpressen der Enden eines flexiblen Abstandhalters, der auf eine Glastafel aufgesetzt ist, bekannt. Die bekannte Vorrichtung weist eine um 90° verschwenkbare Klemme auf, wobei eine der beiden Klemmbacken bei verschwenkter Klemme den von der Klemme gehaltenen Abschnitt des Abstandhalters gegen ein Widerlager drückt. Zusätzlich ist ein quer zur Glastafel vorschiebbarer Druckstempel vorgesehen, der das umgebogene Ende des Abstandhalters gegen die Glastafel drückt. An der Vorrichtung der Klemme kann ein Perforationswerkzeug vorgesehen sein, das den Abstandhalter perforiert, wenn dieser von der Klemme gehalten wird.Out of AT 390 946 B A device for forming corners and for pressing the ends of a flexible spacer that is placed on a glass panel is known. The known device has a clamp that can be pivoted through 90°, whereby one of the two clamping jaws presses the section of the spacer held by the clamp against an abutment when the clamp is pivoted. In addition, a pressure stamp that can be pushed forward transversely to the glass panel is provided, which presses the bent end of the spacer against the glass panel. A perforation tool can be provided on the clamp device, which perforates the spacer when it is held by the clamp.

Aus AT 14 493 U1 ist es bekannt, in Eckbereichen eines auf eine Glasscheibe aufgetragenen Stranges aus verformbarem Werkstoff, der einen Abstandhalter für Isolierglas bildet, scharfkantige Ecken auszubilden, indem ein Werkzeug an das Außeneck und ein Werkzeug an das Inneneck angepresst wird. Die Werkzeuge haben Wirkflächen, die der Form der Außenecke und der Form der Innenecke entsprechen.Out of AT 14 493 U1 It is known to form sharp-edged corners in corner areas of a strand of deformable material applied to a pane of glass, which forms a spacer for insulating glass, by pressing a tool onto the outer corner and a tool onto the inner corner. The tools have effective surfaces that correspond to the shape of the outer corner and the shape of the inner corner.

DE 24 5 707 A1 offenbart ein Verfahren zum Herstellen von Mehrscheibenisolierglas, bei dem zwei Glasscheiben durch einen am Rand der Scheiben umlaufenden Abstandhalter auf Abstand gehalten sind, wobei jeweils ein schmaler Glasstreifen bis zur Scheibenkante für eine den so gebildeten Dichtungsraum ausfüllende Dichtungsmasse freibleibt. Um den Scheibenrand wird ein den Dichtungsraum gegenüber den Außenflächen der Glasscheiben abdichtender Abschluss mit mindestens einer Öffnung angebracht, durch die anschließend die Dichtungsmasse in flüssiger Form eingebracht wird, während aus einer oder mehreren Öffnungen Luft entweicht, bis der Dichtungsraum vollständig ausgefüllt ist und die Dichtungsmasse abbindet. DE 24 5 707 A1 discloses a method for producing multi-pane insulating glass, in which two panes of glass are kept at a distance by a spacer running around the edge of the panes, whereby a narrow strip of glass remains free up to the edge of the pane for a sealing compound to fill the sealing space thus formed. A closure is attached around the edge of the pane, sealing the sealing space against the outer surfaces of the panes of glass, with at least one opening through which the sealing compound can then be introduced into is introduced in liquid form while air escapes from one or more openings until the sealing space is completely filled and the sealing compound sets.

EP 1 018 590 A2 betrifft ein Verfahren zum Herstellen eines Abstandhalters aus thermoplastischem Kunststoff auf Glasscheiben im Zuge des Herstellens von Isolierglasscheiben, bei dem thermoplastischer Kunststoff entlang des Randes der Glasscheibe und strangförmig auf die Glasscheibe aufgespritzt wird. EP 1 018 590 A2 relates to a method for producing a spacer made of thermoplastic material on glass panes during the production of insulating glass panes, in which thermoplastic material is sprayed along the edge of the glass pane and in the form of a strand onto the glass pane.

Aus WO 98/50664 A1 ist es bekannt, in einem Freiraum zwischen Enden von Abschnitten eines Abstandhalters Dichtmasse einzubringen.Out of WO98/50664 A1 It is known to insert sealing compound into a free space between the ends of sections of a spacer.

Der Erfindung liegt zum einen die Aufgabe zugrunde, ein Verfahren der eingangs genannten Gattung zur Verfügung zu stellen, mit dem das Verbinden von Enden von Abstandhaltern aus thermoplastischem Werkstoff im Bereich von Ecken problemlos und zuverlässig möglich ist. Zum anderen liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung, mit der das Verfahren durchgeführt werden kann, zur Verfügung zu stellen.The invention is based on the object of providing a method of the type mentioned at the outset with which the ends of spacers made of thermoplastic material can be connected in the area of corners without any problems and reliably. The invention is also based on the object of providing a device with which the method can be carried out.

Gelöst wird diese Aufgabe erfindungsgemäß mit einem Verfahren, das die Merkmale von Anspruch 1 aufweist.This object is achieved according to the invention with a method having the features of claim 1.

Die der Erfindung zu Grunde liegende Aufgabe wird auch mit einer Vorrichtung gelöst, die die Merkmale des unabhängigen, auf die Vorrichtung gerichteten, Anspruches aufweist.The object underlying the invention is also achieved with a device which has the features of the independent claim directed to the device.

Bevorzugte und vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens einerseits und der erfindungsgemäßen Vorrichtung anderseits sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the method according to the invention on the one hand and of the device according to the invention on the other hand are the subject of the dependent claims.

Da bei dem erfindungsgemäßen Verfahren in den Freiraum zwischen den Enden eines Abstandhalters aus thermoplastischem Werkstoff ein sich verfestigender, insbesondere thermoplastischer, Werkstoff eingebracht, insbesondere eingespritzt, wird, ergibt sich nicht nur ein sicheres Vermeiden von Luftkanälen, sondern es wird auch ein optisch verbessertes Aussehen des Bereiches zwischen den Enden eines Abstandhalters aus thermoplastischem Werkstoff erreicht.Since the method according to the invention is used in the space between If a solidifying, in particular thermoplastic, material is introduced, in particular injected, into the ends of a spacer made of thermoplastic material, not only is air channels reliably avoided, but a visually improved appearance of the area between the ends of a spacer made of thermoplastic material is also achieved.

Ein Vorteil des erfindungsgemäßen Verfahrens liegt darin, dass es im Bereich von Ecken von Abstandhaltern problemlos anwendbar ist. Dabei ist es von Vorteil, dass auch scharfe Ecken von Abstandhaltern gebildet werden können.One advantage of the method according to the invention is that it can be used without any problems in the area of spacer corners. It is advantageous that even sharp corners of spacers can be formed.

Da bei dem erfindungsgemäßen Verfahren der Werkstoff, welcher die Enden des Abstandhalters aus thermoplastischem Werkstoff miteinander verbindet, in eine aus Platten gebildete Schalung eingebracht, beispielsweise gespritzt, wird, ist die im Stand der Technik oft nicht zufriedenstellende Verbindung auch optisch einwandfrei ausgebildet.Since in the method according to the invention the material which connects the ends of the spacer made of thermoplastic material to one another is introduced, for example injected, into a formwork made of panels, the connection, which is often unsatisfactory in the prior art, is also optically flawless.

Durch das erfindungsgemäße Verfahren werden auch Ungenauigkeiten bei der Dosierung, die bei Unterdosierung eine Unterbrechung im Abstandhalter zur Folge haben könnten (was zu einem undichten Isolierglaselement führt), vermieden. Auch Überdosierungen werden vermieden. So sind Überdosierungen des zwischen die Enden des Abstandhalters eingebrachten Materials, die beim nachfolgenden Versiegeln von Isolierglas-Rohlingen Probleme verursachen könnten, vermieden.The method according to the invention also avoids inaccuracies in dosing, which could result in a break in the spacer if underdosed (leading to a leaky insulating glass element). Overdosing is also avoided. This avoids overdosing of the material introduced between the ends of the spacer, which could cause problems during the subsequent sealing of insulating glass blanks.

Bevorzugt ist es im Rahmen der Erfindung, wenn das Verfahren bei in situ applizierten Abstandhaltern aus thermoplastischem Kunststoff angewendet wird. Dabei kann die in dem Bereich zwischen den Enden des Abstandhalters eingebrachte Masse ebenfalls ein thermoplastischer Kunststoff oder ein Kunststoff sein, der mit der Masse, aus welcher der Abstandhalter gebildet ist, kompatibel ist.It is preferred within the scope of the invention if the method is used for in situ applied spacers made of thermoplastic material. The mass introduced into the area between the ends of the spacer can also be a thermoplastic material or a plastic material which is mixed with the mass from which the spacer is formed. is compatible.

Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung unter Bezugnahme auf die Beispiele darstellenden Zeichnungen. Es zeigt:

Fig. 1
einen Teil eines Abstandhalters, wobei der Abstand ("Freiraum") zwischen den Enden im Bereich einer Ecke des Abstandhalters liegt,
Fig. 2
eine vollständige Schalung, die im Bereich einer scharfkantigen Ecke eines Abstandhalters angebracht ist,
Fig. 3
eine vollständige Schalung, die im Bereich einer runden Ecke eines Abstandhalters angebracht ist und
Fig. 4
im Querschnitt eine vollständige Schalung, die im Bereich der Enden des Abstandhalters angebracht ist.
Further details and features of the invention emerge from the following description with reference to the drawings showing examples. It shows:
Fig.1
a part of a spacer, the distance ("clearance") between the ends being in the region of a corner of the spacer,
Fig.2
a complete formwork installed in the area of a sharp-edged corner of a spacer,
Fig. 3
a complete formwork installed in the area of a rounded corner of a spacer and
Fig.4
in cross-section a complete formwork which is installed in the area of the ends of the spacer.

In Fig. 1 ist eine Glasscheibe 1 gezeigt, auf welche ein Abstandhalter 2 aufgebracht ist. Der Abstandhalter 2 besteht im Wesentlichen aus thermoplastischem Kunststoff und wird in situ erzeugt, d.h. er wird unmittelbar auf die Glasscheibe 1 aufgespritzt. Alternativ kann der Abstandhalter 2 ein vorgefertigter Strang aus (thermoplastischem) Kunststoff sein, der auf die Glasscheibe 1 appliziert wurde.In Fig.1 a glass pane 1 is shown, onto which a spacer 2 is applied. The spacer 2 consists essentially of thermoplastic material and is produced in situ, ie it is sprayed directly onto the glass pane 1. Alternatively, the spacer 2 can be a prefabricated strand of (thermoplastic) material that has been applied to the glass pane 1.

Zwischen den Enden 3 des Abstandhalters 2 liegt ein Freiraum 4 vor. Dieser Freiraum 4 wird beispielsweise gebildet, indem das Applizieren des den Abstandhalter 2 bildenden Stranges aus Kunststoff ein Stück vor dem Beginn der Applikation beendet wird. So wird ein Freiraum 4 erzeugt, der beispielsweise eine Länge von 30 mm hat.There is a free space 4 between the ends 3 of the spacer 2. This free space 4 is formed, for example, by stopping the application of the plastic strand forming the spacer 2 a little before the start of the application. This creates a free space 4 that has a length of 30 mm, for example.

Wie in Fig. 1 gezeigt, liegt der Freiraum 4 zwischen den Enden 3 des Abstandhalters 2 im Bereich einer Ecke der Glasscheibe 1 vor.As in Fig.1 As shown, the free space 4 between the ends 3 of the spacer 2 is in the region of a corner of the glass pane 1.

Hinzuweisen ist noch darauf, dass ein Freiraum 4 zwischen Enden 3 eines Abstandhalters 2 nicht nur am Beginn und am Ende eines sonst geschlossenen Abstandhalters 2 vorliegen kann, sondern auch in anderen Abschnitten von Abstandhaltern 2, die auf eine Glasscheibe 1 appliziert (beispielsweise aufgespritzt) wurden.It should also be pointed out that a free space 4 between ends 3 of a spacer 2 can be present not only at the beginning and at the end of an otherwise closed spacer 2, but also in other sections of spacers 2 that have been applied (for example sprayed on) to a glass pane 1.

Im Bereich des Freiraumes 4 zwischen den Enden 3 des Abstandhalters 2 wird nun eine Schalung 8 angeordnet. Dabei wird im Bereich des Freiraumes 4 zunächst eine seitliche Abdeckplatte 5 an der einen Seite, insbesondere der Außenseite, des Abstandhalters 2 an diesem seitlich anliegend angebracht. Danach wird eine weitere Abdeckplatte 6 an der anderen Seite, insbesondere der Innenseite, des Abstandhalters 2 an diesem seitlich anliegend angebracht.A formwork 8 is now arranged in the area of the free space 4 between the ends 3 of the spacer 2. In the area of the free space 4, a lateral cover plate 5 is first attached to one side, in particular the outside, of the spacer 2, adjacent to the side thereof. Then a further cover plate 6 is attached to the other side, in particular the inside, of the spacer 2, adjacent to the side thereof.

Danach wird zwischen die von der Glasscheibe 1 weg über den Abstandhalter 2 hinausragenden Bereiche der Abdeckplatten 5 und 6 eine obere Abdeckplatte 7 (Stempel) eingeführt und so weit bewegt, bis sie an den von der Glasscheibe 1 abgekehrten freien Flächen 10 des Abstandhalters 2 anliegt.Thereafter, an upper cover plate 7 (stamp) is inserted between the areas of the cover plates 5 and 6 that protrude from the glass pane 1 beyond the spacer 2 and is moved until it rests against the free surfaces 10 of the spacer 2 facing away from the glass pane 1.

Sobald - wie in den Fig. 2 und 3 an verschiedenen Ausführungsbeispielen gezeigt - durch Anbringen der beiden seitlichen Abdeckplatten 5 und 6 und der oberen Abdeckplatte 7 eine Schalung 8 (diese bildet eine Form mit einem Formhohlraum, der von den Abdeckplatten 5, 6 und 7 von den Enden 3 des Abstandhalters 2 sowie von der Glasscheibe 1 begrenzt ist), die den Freiraum 4 zwischen den Enden 3 des Abstandhalters 2 umgibt, hergestellt wurde, wird thermoplastischer Kunststoff durch die Leitung 9, welche an der oberen Abdeckplatte 7 angeschlossen ist und sich durch diese erstreckt, in den von der Schalung 8 umschlossenen Freiraum 4 (also in den Formhohlraum) eingebracht, beispielsweise eingespritzt. Dies ist beispielsweise in der Schnittdarstellung von Fig. 4 gezeigt, wo auch erkennbar ist, dass die seitlichen Abdeckplatten 5 und 6 gegebenenfalls mit leistenförmigen Rippen 11 an der Glasscheibe 1 anliegen.As soon as - as in the Fig.2 and 3 shown in various embodiments - by attaching the two side cover plates 5 and 6 and the upper cover plate 7, a formwork 8 (this forms a mold with a mold cavity which is delimited by the cover plates 5, 6 and 7, by the ends 3 of the spacer 2 and by the glass pane 1) which surrounds the free space 4 between the ends 3 of the spacer 2, thermoplastic material is introduced, for example injected, through the line 9 which is connected to the upper cover plate 7 and extends through it, into the free space 4 enclosed by the formwork 8 (i.e. into the mold cavity). This is shown, for example, in the sectional view of Fig.4 where it can also be seen that the side cover plates 5 and 6 may be strip-shaped ribs 11 rest against the glass pane 1.

Nach dem Einbringen des thermoplastischen Kunststoffes in den Freiraum 4 sind die Enden 3 des Abstandhalters 2 miteinander verbunden, und es kann nach dem Erhärten des eingebrachten Kunststoffes die Schalung 8 abgenommen werden, indem die Abdeckplatte 7 abgehoben und die seitlichen Abdeckplatten 5 und 6 weg bewegt werden, wie dies durch Pfeile in Fig. 4 symbolisiert ist.After the thermoplastic material has been introduced into the free space 4, the ends 3 of the spacer 2 are connected to one another, and after the introduced plastic has hardened, the formwork 8 can be removed by lifting the cover plate 7 and moving the side cover plates 5 and 6 away, as shown by arrows in Fig.4 is symbolized.

Durch die beschriebene Arbeitsweise beim Schließen eines Freiraumes 4 zwischen den Enden 3 eines Abstandhalters 2 ergibt/ergeben sich einer oder mehrere der nachstehend genannten Vorteile:

  • kein Luftkanal,
  • verbesserte Haftung an der Glasscheibe,
  • kein Überquellen von Material neben die Verschlussstelle,
  • kein Verschleiß an den die Schalung 8 bildenden Abdeckplatten 5, 6 und 7,
  • geringere Wartungsarbeiten und
  • im Eckbereich kann eine scharfe Ecke erzeugt werden.
The described method of closing a free space 4 between the ends 3 of a spacer 2 results in one or more of the following advantages:
  • no air duct,
  • improved adhesion to the glass pane,
  • no overflow of material next to the closure point,
  • no wear on the cover plates 5, 6 and 7 forming the formwork 8,
  • less maintenance and
  • A sharp corner can be created in the corner area.

Um das Anhaften von Kunststoff, der in den von der Schalung 8 umschlossenen Freiraum 4 zwischen den Enden 3 des Abstandhalters 2 eingebracht wird, an den dem Formhohlraum der Schalung 8 zugewandten Flächen der Abdeckplatten 5, 6 und 7 zu vermeiden, sind verschiedene Maßnahmen möglich, nämlich:

  • Beschichtung mit Trennmittel,
  • (wenigstens) dem Freiraum 4 zugewandte Flächen der Abdeckplatten 5, 6 und 7 werden aus Antihaftwerkstoff gefertigt oder
  • Kühlen der Abdeckplatten 5, 6 und 7 unter den Taupunkt, so dass sich auf den Abdeckplatten 5, 6 und 7 ein als Trenn- und Antihaftmittel wirkender Film aus Wasser (Wassertröpfchen) niederschlägt.
In order to prevent the adhesion of plastic, which is introduced into the free space 4 enclosed by the formwork 8 between the ends 3 of the spacer 2, to the surfaces of the cover plates 5, 6 and 7 facing the mold cavity of the formwork 8, various measures are possible, namely:
  • Coating with release agent,
  • (at least) surfaces of the cover plates 5, 6 and 7 facing the free space 4 are made of non-stick material or
  • Cooling the cover plates 5, 6 and 7 below the dew point so that a film of water (water droplets) acting as a separating and anti-stick agent is deposited on the cover plates 5, 6 and 7.

Claims (9)

  1. Method for closing a clearance (4) between ends (3) of a spacer (2) which has been applied to a glass pane (1), wherein the ends (3) of the spacer (2) are connected to one another by introducing a solidifying material into the clearance (4), characterized in that the clearance (4) between the ends (3) of the spacer (2) is present in the region of a corner of the spacer, in that a shuttering (8) which surrounds the clearance (4) between the ends (3) of the spacer (2) is fitted in the region of the clearance (4) between the ends (3) of the spacer (2), and in that the solidifying material is introduced into the clearance (4) enclosed by the shuttering (8).
  2. Method according to claim 1, characterized in that the material to be introduced into the clearance (4) is a material which is compatible with the material of the spacer (2) .
  3. Method according to claim 1, characterized in that material is introduced into the clearance (4) which is identical to the material of which the spacer (2) consists.
  4. Method according to one of claims 1 to 3, characterized in that the shuttering (8) is formed by placing lateral cover plates (5 and 6) on the side surfaces of the spacer (2) perpendicular to the plane of the glass pane (1) and placing an upper cover plate (7), which rests against the free surface (10) of the spacer (2), in position between the cover plates (5 and 6).
  5. Method according to claim 4, characterized in that material is introduced, for example injected, into the clearance (4) through a bore in the upper cover plate (7) until it is completely filled.
  6. Method according to one of claims 4 to 5, characterized in that the shuttering (8) is removed after the clearance (4) has been filled with material by moving the cover plates (5, 6 and 7) away.
  7. Device for carrying out the method according to one of claims 1 to 6, characterized by a shuttering (8) consisting of two lateral cover plates (5 and 6) and an upper cover plate (7) and by a line (9) for feeding plastic into the interior of the shuttering (8).
  8. Device according to claim 7, characterized in that the upper cover plate (7) is inserted between the regions of the lateral cover plates (5 and 6) projecting away from the glass pane (1) and protruding beyond the spacer (2).
  9. Device according to claim 7 or 8, characterized in that the lateral cover plates (5 and 6) have strip-shaped ribs (11) which are to be placed against the glass pane (1).
EP19731918.9A 2018-12-06 2019-06-13 Method and device for producing thermoplastic spacers Active EP3891353B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3682018 2018-12-06
PCT/EP2019/065528 WO2020114633A1 (en) 2018-12-06 2019-06-13 Method and device for producing thermoplastic spacers

Publications (2)

Publication Number Publication Date
EP3891353A1 EP3891353A1 (en) 2021-10-13
EP3891353B1 true EP3891353B1 (en) 2024-04-24

Family

ID=66998363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19731918.9A Active EP3891353B1 (en) 2018-12-06 2019-06-13 Method and device for producing thermoplastic spacers

Country Status (2)

Country Link
EP (1) EP3891353B1 (en)
WO (1) WO2020114633A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT526253B1 (en) 2023-02-27 2024-01-15 Lisec Austria Gmbh Method and device for closing a joint in spacers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT390946B (en) 1986-11-03 1990-07-25 Lisec Peter DEVICE FOR SHAPING A CORNER AND CRESSING THE ENDS OF FLEXIBLE SPACERS
AT391681B (en) 1987-09-16 1990-11-12 Lisec Peter METHOD AND DEVICE FOR CLOSING OPENINGS IN SPACERS
DE4433749C2 (en) 1994-09-22 2002-11-21 Lenhardt Maschinenbau Method and device for applying a plastic spacer to a glass sheet
EP0979338B1 (en) * 1997-05-02 2002-08-14 LAFOND, Luc Composite insulated glass assembly and method of forming same
AT406979B (en) * 1999-01-08 2000-11-27 Lisec Peter METHOD FOR APPLYING A THERMOPLASTIC SPACER TO A GLASS DISC IN THE MANUFACTURE OF INSULATING GLASS DISC AND THE NOZZLE USED BY THE PROCESS
DE102005044860A1 (en) 2005-09-13 2007-03-15 Lenhardt Maschinenbau Gmbh Insulating pane of glass, comprises two sheets of glass adhered to one another via a plastic spacer
AT14493U1 (en) 2014-10-20 2015-12-15 Lisec Austria Gmbh Method and device for forming corners in insulating glass spacers
DE102014115218B3 (en) 2014-10-20 2016-04-14 Bystronic Lenhardt Gmbh Method for forming a closed frame-shaped spacer for an insulating glass pane
DE102015122882A1 (en) 2015-12-29 2017-06-29 Bystronic Lenhardt Gmbh Method for forming a closed frame-shaped spacer for an insulating glass pane

Also Published As

Publication number Publication date
WO2020114633A1 (en) 2020-06-11
EP3891353A1 (en) 2021-10-13

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