EP1860270B1 - Insulating glass unit with an elastoplastic spacer band and application method for the latter - Google Patents

Insulating glass unit with an elastoplastic spacer band and application method for the latter Download PDF

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Publication number
EP1860270B1
EP1860270B1 EP07008532A EP07008532A EP1860270B1 EP 1860270 B1 EP1860270 B1 EP 1860270B1 EP 07008532 A EP07008532 A EP 07008532A EP 07008532 A EP07008532 A EP 07008532A EP 1860270 B1 EP1860270 B1 EP 1860270B1
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EP
European Patent Office
Prior art keywords
glass unit
insulating glass
band
unit according
silicone
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Not-in-force
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EP07008532A
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German (de)
French (fr)
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EP1860270A3 (en
EP1860270A2 (en
Inventor
Peter Lisec
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Individual
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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
    • E06B3/66361—Section members positioned at the edges of the glazing unit with special structural provisions for holding drying agents, e.g. packed in special containers
    • 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
    • E06B3/66342—Section members positioned at the edges of the glazing unit characterised by their sealed connection to the panes

Definitions

  • the invention relates to an insulating glass unit comprising at least two panes with an elastoplastic spacer tape comprising a shell and a core of a desiccant and for adhering to opposite disc surfaces certain side surfaces, an intended interior space between the discs facing inner surface and, the latter opposite, an outer surface has, which is coated with a vapor barrier layer.
  • Spacer tape which preferably consists of silicone foam, to which about 30% of a desiccant (hereinafter also briefly for a mixture of several desiccants) are mixed. So that the desiccant can fulfill its task of dehumidifying the interior space between the panes, the silicone foam is open-pored. Therefore, a (water) vapor barrier layer is required on the outside of the spacer tape, which should also be resistant to UV radiation, but not hinder the bending of the band in tight radii of curvature or bending (after punching a corner wedge) in the corners of an insulating glass unit should.
  • the very thin aluminum layer which is generally applied by sputtering does not hinder the bending or bending of the spacer strip, it does tend to form microcracks which impair the vapor diffusion tightness.
  • the known spacer tape made of silicone foam with admixed desiccant, it has only a limited Dimensional stability.
  • the silicone foam can be added only comparatively little desiccant, otherwise both the strength and the elastic properties of the band suffer.
  • the spacer consists of a plastic hollow profile, which is preferably glass fiber reinforced and contains a desiccant, which communicates via openings in the spacer with the interior of the insulating glass unit.
  • a similar spacer is from the DE 26 36 433 A1 known. It consists of a plastic hollow profile, for example PVC, which is filled with a desiccant.
  • an insulating glass unit which consists of at least two discs, between which a flexible tube is made of PVC, for example, filled with a desiccant, the water vapor permeable to the disk interior and coated to the outside with a vapor barrier layer.
  • the invention has for its object to provide an insulating glass unit with a spacer strip of the type mentioned in the introduction, which combines a high dimensional stability with a high capacity for the absorption of water vapor.
  • the sheath consists of a silicone material, that the desiccant of the core is plastic bonded and that the silicone sheath and the desiccant core are coextruded.
  • the invention thus consists in assigning the different functions of the spacer strip from each other separate materials.
  • the silicone-free, desiccant-free jacket ensures UV resistance, elasticity and high dimensional stability.
  • the desiccant core can make up a substantial portion of the cross-section of the belt so that the volume fraction of desiccant can be increased up to 70%. Accordingly, the water vapor absorption capacity ever becomes larger Length unit of the band. This prolongs the life of the insulating glass unit, ie the time it takes for saturation of the desiccant to form condensation in the interior of the insulating glass unit. At the same time expensive silicone material is saved in the production of the tape.
  • the silicone sheath must be formed permeable to water vapor, at least in the region of the inner surface of the band.
  • it may consist entirely of open-pored silicone foam.
  • the silicone sheath can be substantially or completely solid and open-pored only in the region of the inner surface of the band.
  • the silicone shell may be solid but micro-perforated in the region of the inner surface of the band.
  • Another possibility is to create a massive, i. pore-free silicone sheath in the region of the inner surface of the band with one, but preferably several narrow slits to provide.
  • this slot can be filled with an open-pored plastic, preferably by way of coextrusion.
  • the vapor barrier layer is preferably made of a thin sheet of stainless steel. This film is diffusion-tight, insensitive to bending and buckling and other than aluminum corrosion resistant.
  • the steel foil can both edges of the band between its outer surface and embrace its side surfaces and then sits very firmly.
  • Each side surface of the band may have a retracted partial surface longitudinally following the edge of the outer surface.
  • the steel foil can at least partially cover the retracted partial surfaces of the side surfaces of the band. This further improves the adhesion of the steel foil to the strip.
  • At least the retracted partial surfaces of the side surfaces of the band are coatable in the course of its application between the two glass panes with a butyl adhesive, which ensures the vapor diffusion tightness.
  • the remaining side surfaces can with a commercially strong ahotrosiven adhesive, z. As acrylic-based, coated.
  • the steel foil may be glued to the tape.
  • the steel foil may be bonded to the belt by coextrusion.
  • the spacer strip can be applied circumferentially to the first glass pane as follows using a device known per se (the second glass pane is then pressed against the composite of the first glass pane and the spacer strip):
  • the smooth or stepped according to the invention formed side surfaces of the band are coated over part of their height, for example over half the height, with the above-mentioned strongly adhesive adhesive, which is initially covered with a protective film. After removing the protective film, a thin strand of butyl adhesive is applied to the remaining part of the respective side surface. Immediately thereafter, the tape is applied against the first glass and adheres to this immovable.
  • the adhering to the disc specific, but adhesive-free side surface of the belt after its removal from a tape supply, before applying and expediently shortly before the application of the Butylstranges, treated by means of high-energy radiation treated by means of high-energy radiation.
  • This surface treatment which is known in particular as a corona process and as a plasma process, can extend over the entire height of the respective side surface or only on that part surface which is coated with the strongly adhesive adhesive when using the previously described method.
  • the treatment of the surface with high-energy radiation replaces the strongly adhesive adhesive and leads to an activation of the surface, which makes the latter itself highly adhesive, after the usual explanation by "incorporation" of oxygen atoms or ozone molecules, the wetting and adhesive properties of plastics in particular considerably improve on smooth materials such as glass.
  • Fig. 1 shows a spacer strip 1 according to the invention between the panes 2 and 3 of an insulating glass unit.
  • the band 1 is immovably fixed by a known per se adhesive adhesive 4, in particular an adhesive based on acrylate.
  • This adhesive is preferably already before applying the tape 1 on the side surfaces and, as is known, activated by peeling off protective films immediately before applying. Since the known, strongly adhesive adhesives are not resistant to diffusion of vapor, is located between the side surfaces of the strip and the glass also has a vapor-resistant adhesive 5, usually a butyl adhesive. This is applied immediately before the application of the tape and permanently retains its viscoelastic properties, as also known.
  • the supernatant of the glass sheets 2 and 3 on the spacer strip 1 forms the usual, circumferential edge joint, which is also known, in the next manufacturing step with a polymerizing plastic, in particular based on polysulfide, filled (not shown).
  • the spacer strip 1 consists in this embodiment of a silicone sheath 1.1, here from open-celled silicone foam (in Fig. 1 symbolically indicated) and a core, here for example with circular cross section, of a resin-bonded desiccant or desiccant mixture 1.2.
  • the outer surface of the spacer strip 1 is covered with a thin sheet of stainless steel 1.3.
  • This film 1.3 can be laminated on the spacer strip 1, for example.
  • the film is so thin and stretchable that it also bends the tape 1 (after the inside punching corner wedges) in the corners of the insulating glass unit without microcracks forming.
  • FIG. 2 It comprises an outer surface 11, two opposing side surfaces 12 and 13 and an inner surface 14. Seen from the outer surface 11, the side surfaces 12 and 13 have the outer surface 11 depending on the edges 11a and 11b a retracted part surface 12a and 13a.
  • the steel foil 1.3 on the outer surface 11 is folded around the edges 11a and 11b, so that the lateral edges of the steel foil 1.3 partially cover the partial surfaces 12a and 13a of the band.
  • the remaining areas of the side surfaces are as in Fig. 1 coated with the adhesive 4.
  • the band consists of a silicone sheath 1.1 and has a core cavity 1.4 for the desiccant.
  • the silicone sheath 1.1 in this embodiment is made of solid, non-porous silicone.
  • the inner surface 14 of the tape is provided with numerous microholes 1.5, which are indicated enlarged here.
  • FIG. 3 shows a similar embodiment in which, however, the here also massive silicone sheath 1.1 in the region of the inner surface of the band has a narrow longitudinal slot 1.6, which ensures a water vapor permeable connection between the disc interior and the core cavity 1.4.
  • a plurality of separate and possibly staggered slots may be provided.
  • FIG. 4 shows a further embodiment, which instead of the narrow slot 1.6 has a contrast significantly wider slot 1.7 in the silicone sheath 1.1.
  • This slot is 1.7 with an open-pored plastic 1.8, eg again silicone foam, filled, is diffused through the water vapor from the disc interior to the desiccant 1.2 and absorbed by it.
  • the side surfaces 12 and 13 of the tape are not coated with the high adhesive adhesive 4, but obtain their strong adhesive property by irradiation with high energy radiation, e.g. after the corona process, in the applicator, not shown, shortly before the application of the two-sided Butylstrfite. 5

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Electroluminescent Light Sources (AREA)
  • Laminated Bodies (AREA)

Abstract

The glass unit has glass panes (2, 3) provided with elastoplastic spacer bands (1), where the spacer bands include a silicone mantel (1.1) and a core of a drying agent. The mantel has an inner surface turned towards an inner region between the panes and sides surfaces determined for an adhesion unit at pane surfaces, and an outer surface is coated with a moisture barrier layer. The mantel is made of silicone material such that the drying agent of the core is resin bonded. The silicone mantel and the drying agent core are co-extruded. The barrier layer has a foil (1.3) made of stainless steel. An independent claim is also included for a method for applying spacer bands on plates of an insulating glass unit.

Description

Die Erfindung betrifft eine Isolierglaseinheit aus mindestens zwei Scheiben mit einem elastoplastischen Abstandhalterband, das einen Mantel und einen Kern aus einem Trockenmittel umfasst und zur haftenden Anlage an gegenüberliegenden Scheibenflächen bestimmte Seitenflächen, eine bestimmungsgemäß dem Innenraum zwischen den Scheiben zugewandte Innenfläche und, letzterer gegenüberliegend, eine Außenfläche hat, die mit einer Dampfsperrschicht beschichtet ist.The invention relates to an insulating glass unit comprising at least two panes with an elastoplastic spacer tape comprising a shell and a core of a desiccant and for adhering to opposite disc surfaces certain side surfaces, an intended interior space between the discs facing inner surface and, the latter opposite, an outer surface has, which is coated with a vapor barrier layer.

Aus der EP 0 261 923 B1 ist Abstandhalterband bekannt, das vorzugsweise aus Silikonschaum besteht, dem bis etwa 30% eines Trockenmittels (im Folgenden auch kurz für eine Mischung aus mehreren Trockenmitteln) beigemischt sind. Damit das Trockenmittel seine Aufgabe erfüllen kann, den Innenraum zwischen den Scheiben zu entfeuchten, ist der Silikonschaum offenporig. Deshalb ist auf der Außenseite des Abstandhalterbandes eine (Wasser-)Dampfsperrschicht erforderlich, die auch beständig gegenüber UV-Strahlung sein soll, aber das Biegen des Bandes in engen Krümmungsradien oder das Abwinkeln (nach dem Ausstanzen eines Eckkeiles) in den Ecken einer Isolierglaseinheit nicht behindern soll. Die hierfür in der Regel durch Besputtern aufgebrachte, sehr dünne Aluminiumschicht behindert zwar das Biegen oder Abwinkeln des Abstandhalterbandes nicht, neigt aber zur Bildung von Mikrorissen, die die Dampfdiffusionsdichtigkeit verschlechtern.From the EP 0 261 923 B1 Spacer tape is known, which preferably consists of silicone foam, to which about 30% of a desiccant (hereinafter also briefly for a mixture of several desiccants) are mixed. So that the desiccant can fulfill its task of dehumidifying the interior space between the panes, the silicone foam is open-pored. Therefore, a (water) vapor barrier layer is required on the outside of the spacer tape, which should also be resistant to UV radiation, but not hinder the bending of the band in tight radii of curvature or bending (after punching a corner wedge) in the corners of an insulating glass unit should. Although the very thin aluminum layer which is generally applied by sputtering does not hinder the bending or bending of the spacer strip, it does tend to form microcracks which impair the vapor diffusion tightness.

Weil das bekannte Abstandhalterband aus Silikonschaum mit beigemischtem Trockenmittel besteht, hat es nur eine beschränkte Formstabilität. Ausserdem kann dem Silikonschaum nur vergleichsweise wenig Trockenmittel beigemischt werden, denn andernfalls leiden sowohl die Festigkeit als auch die elastischen Eigenschaften des Bandes.Because the known spacer tape made of silicone foam with admixed desiccant, it has only a limited Dimensional stability. In addition, the silicone foam can be added only comparatively little desiccant, otherwise both the strength and the elastic properties of the band suffer.

Eine Isolierglaseinheit mit einem ähnlichen Abstandhalter ist aus der DE 195 33 685 A1 bekannt. Der Abstandhalter besteht aus einem Kunststoffhohlprofil, das vorzugsweise glasfaserverstärkt ist und ein Trockenmittel enthält, das über Durchbrüche in dem Abstandhalter mit dem Innenraum der Isolierglaseinheit in Verbindung steht.An insulating glass unit with a similar spacer is made of DE 195 33 685 A1 known. The spacer consists of a plastic hollow profile, which is preferably glass fiber reinforced and contains a desiccant, which communicates via openings in the spacer with the interior of the insulating glass unit.

Ein ähnlicher Abstandhalter ist aus der DE 26 36 433 A1 bekannt. Er besteht aus einem Kunststoffhohlprofil, beispielhaft PVC, das mit einem Trockenmittel gefüllt ist.A similar spacer is from the DE 26 36 433 A1 known. It consists of a plastic hollow profile, for example PVC, which is filled with a desiccant.

Aus der WO 93/20320 A ist eine Isolierglaseinheit bekannt, die aus mindestens zwei Scheiben besteht, zwischen denen sich ein biegsames Rohr beispielsweise aus PVC befindet, das mit einem Trockenmittel gefüllt, zum Scheibeninnenraum hin wasserdampfdurchlässig und zur Außenfläche hin mit einer Dampfsperrschicht beschichtet ist.From the WO 93/20320 A is an insulating glass unit is known which consists of at least two discs, between which a flexible tube is made of PVC, for example, filled with a desiccant, the water vapor permeable to the disk interior and coated to the outside with a vapor barrier layer.

Aus der EP 0 646 753 A2 ist ein Isolierglassichtfenster bekannt, zwischen dessen Scheiben als Abstandhalter ein kompressibler Silikonschlauch angeordnet ist, der bei Erwärmung des sich zwischen den Scheiben befindlichen Gases durch letzteres zusammengedrückt wird.From the EP 0 646 753 A2 is a Isolierglassichtfenster known between the discs as a spacer a compressible silicone tube is arranged, which is compressed upon heating of the gas located between the discs by the latter.

Der Erfindung liegt die Aufgabe zugrunde, eine Isolierglaseinheit mit einem Abstandhalterband der einleitend angegebenen Gattung zu schaffen, das eine hohe Formstabilität mit einem hohen Vermögen zur Absorbtion von Wasserdampf verbindet.The invention has for its object to provide an insulating glass unit with a spacer strip of the type mentioned in the introduction, which combines a high dimensional stability with a high capacity for the absorption of water vapor.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, dass der Mantel aus einem Silikonmaterial besteht, dass das Trockenmittel des Kerns kunststoffgebunden ist und dass der Silikonmantel und der Trockenmittelkern koextrudiert sind.This object is inventively achieved in that the sheath consists of a silicone material, that the desiccant of the core is plastic bonded and that the silicone sheath and the desiccant core are coextruded.

Die Erfindung besteht also darin, die unterschiedlichen Funktionen des Abstandhalterbandes voneinander getrennten Materialien zuzuweisen. Der Mantel aus Silikonmaterial, das frei von Trockenmittel ist, gewährleistet die UV-Beständigkeit, die Elastizität und eine hohe Formstabilität. Der Kern aus Trockenmittel kann einen erheblichen Teil des Querschnitts des Bandes ausmache, so dass der Volumenanteil des Trockenmittels bis auf 70% gesteigert werden kann. Entsprechend größer wird das Wasserdampfabsorbtionsvermögen je Längeneinheit des Bandes. Dadurch verlängert sich die Lebensdauer der Isolierglaseinheit, d. h. die Zeit bis es wegen Sättigung des Trockenmittels zur Bildung von Kondenswasser im Inneren der Isolierglaseinheit kommt. Gleichzeitig wird bei der Herstellung des Bandes teures Silikonmaterial eingespart.The invention thus consists in assigning the different functions of the spacer strip from each other separate materials. The silicone-free, desiccant-free jacket ensures UV resistance, elasticity and high dimensional stability. The desiccant core can make up a substantial portion of the cross-section of the belt so that the volume fraction of desiccant can be increased up to 70%. Accordingly, the water vapor absorption capacity ever becomes larger Length unit of the band. This prolongs the life of the insulating glass unit, ie the time it takes for saturation of the desiccant to form condensation in the interior of the insulating glass unit. At the same time expensive silicone material is saved in the production of the tape.

Der Silikonmantel muß zumindest im Bereich der Innenfläche des Bandes wasserdampfdurchlässig ausgebildet sein. Er kann insbesondere insgesamt aus offenporigem Silikonschaum bestehen.The silicone sheath must be formed permeable to water vapor, at least in the region of the inner surface of the band. In particular, it may consist entirely of open-pored silicone foam.

Alternativ kann der Silikonmantel weitgehend oder vollständig massiv und nur im Bereich der Innenfläche des Bandes offenporig sein.Alternatively, the silicone sheath can be substantially or completely solid and open-pored only in the region of the inner surface of the band.

Zum gleichen Zweck kann der Silikonmantel massiv, jedoch im Bereich der Innenfläche des Bandes mikrogelocht sein.For the same purpose, the silicone shell may be solid but micro-perforated in the region of the inner surface of the band.

Eine weitere Möglichkeit besteht darin, einen massiven, d.h. porenfreien Silikonmantel im Bereich der Innenfläche des Bandes mit einem, vorzugsweise jedoch mehreren schmalen Schlitzen zu versehen.Another possibility is to create a massive, i. pore-free silicone sheath in the region of the inner surface of the band with one, but preferably several narrow slits to provide.

Sofern der Silikonmantel im Bereich der Innenfläche des Bandes nur einen einzigen, breiten Schlitz hat, kann dieser Schlitz mit einem offenporigen Kunststoff ausgefüllt sein, am Besten im Wege der Koextrusion.If the silicone sheath in the region of the inner surface of the tape has only a single, wide slot, this slot can be filled with an open-pored plastic, preferably by way of coextrusion.

Die Dampfsperrschicht besteht vorzugsweise aus einer dünnen Folie aus rostfreiem Stahl. Diese Folie ist diffusionsdicht, unempfindlich gegen Biegen und Knicken sowie anders als Aluminium korrosionsfest.The vapor barrier layer is preferably made of a thin sheet of stainless steel. This film is diffusion-tight, insensitive to bending and buckling and other than aluminum corrosion resistant.

Gemäß einer Weiterbildung dieser Ausführungsform kann die Stahlfolie beide Ränder des Bandes zwischen dessen Aussenfläche und dessen Seitenflächen umgreifen und sitzt dann besonders fest.According to a development of this embodiment, the steel foil can both edges of the band between its outer surface and embrace its side surfaces and then sits very firmly.

Jede Seitenfläche des Bandes kann im Anschluss an den Rand der Aussenfläche längslaufend eine eingezogene Teilfläche haben.Each side surface of the band may have a retracted partial surface longitudinally following the edge of the outer surface.

Diese gegenüberliegenden, seitlichen, eingezogenen Teilflächen können, von der Aussenfläche des Bandes hergesehen, als Hinterschnitte ausgebildet sein.These opposite, lateral, retracted partial surfaces can, viewed from the outer surface of the band, be formed as undercuts.

In der Ausführungsform, in der die Stahlfolie beide Ränder des Bandes zwischen dessen Aussenfläche und dessen Seitenflächen umgreift, kann die Stahlfolie die eingezogen Teilflächen der Seitenflächen des Bandes zumindest teilweise überdecken. Dadurch wird die Haftung der Stahlfolie auf dem Band noch weiter verbessert.In the embodiment in which the steel foil encompasses both edges of the band between its outer surface and its side surfaces, the steel foil can at least partially cover the retracted partial surfaces of the side surfaces of the band. This further improves the adhesion of the steel foil to the strip.

Mindestens die eingezogenen Teilflächen der Seitenflächen des Bandes sind im Zuge dessen Applikation zwischen die beiden Glasscheiben mit einem Butylkleber beschichtbar, der die Dampfdiffusionsdichtigkeit gewährleistet. Die verbleibenden Seitenflächen können mit einem handelsüblichen stark ahhäsiven Kleber, z. B. auf Acrylbasis, beschichtet sein.At least the retracted partial surfaces of the side surfaces of the band are coatable in the course of its application between the two glass panes with a butyl adhesive, which ensures the vapor diffusion tightness. The remaining side surfaces can with a commercially strong ahhäsiven adhesive, z. As acrylic-based, coated.

Die Stahlfolie kann auf das Band aufgeklebt sein.The steel foil may be glued to the tape.

Stattdessen kann die Stahlfolie mit dem Band durch Koextrusion verbunden sein.Instead, the steel foil may be bonded to the belt by coextrusion.

Das Abstandhalterband kann wie folgt unter Benutzung einer an sich bekannten Vorrichtung umlaufend auf die erste Glasscheibe appliziert werden (die zweite Glasscheibe wird anschließend lediglich gegen den Verbund aus der ersten Glasscheibe und dem Abstandhalterband angedrückt): Die glatten oder erfindungsgemäß gestuft ausgebildeten Seitenflächen des Bandes sind über einen Teil ihrer Höhe, z.B. über die halbe Höhe, mit dem oben schon genannten stark adhäsiven Kleber beschichtet, der zunächst mit einer Schutzfolie abgedeckt ist. Nach dem Entfernen der Schutzfolie wird auf den verbleibenden Teil der jeweiligen Seitenfläche ein dünner Strang aus einem Butylkleber aufgetragen. Unmittelbar anschließend wird das Band gegen die erste Glasscheibe appliziert und haftet auf dieser unverrückbar.The spacer strip can be applied circumferentially to the first glass pane as follows using a device known per se (the second glass pane is then pressed against the composite of the first glass pane and the spacer strip): The smooth or stepped according to the invention formed side surfaces of the band are coated over part of their height, for example over half the height, with the above-mentioned strongly adhesive adhesive, which is initially covered with a protective film. After removing the protective film, a thin strand of butyl adhesive is applied to the remaining part of the respective side surface. Immediately thereafter, the tape is applied against the first glass and adheres to this immovable.

Vorzugsweise wird die zur haftenden Anlage an der Scheibe bestimmte, jedoch kleberfreie Seitenfläche des Bandes nach dessen Abziehen von einem Bandvorrat, vor dem Applizieren und zweckmäßig kurz vor dem Auftragen des Butylstranges, mittels energiereicher Strahlung behandelt. Diese Oberflächenbehandlung, die insbesondere als Coronaverfahren und als Plasmaverfahren bekannt ist, kann sich über die gesamte Höhe der jeweiligen Seitenfläche oder nur auf diejenige Teilfläche erstecken, die bei Anwendung des zuvor geschilderten Verfahrens mit dem stark adhäsiven Kleber beschichtet ist. Die Behandlung der Oberfläche mit energiereicher Strahlung ersetzt den stark adhäsiven Kleber und führt zu einer Aktivierung der Oberfläche, die letztere selbst stark adhäsiv macht, nach der üblichen Erklärung durch "Einbau" von Sauerstoffatomen oder von Ozonmolekülen, die die Benetzungs- und Hafteigenschaften insbesondere von Kunststoffen auf glatten Werkstoffen wie Glas beträchtlich verbessern.Preferably, the adhering to the disc specific, but adhesive-free side surface of the belt after its removal from a tape supply, before applying and expediently shortly before the application of the Butylstranges, treated by means of high-energy radiation. This surface treatment, which is known in particular as a corona process and as a plasma process, can extend over the entire height of the respective side surface or only on that part surface which is coated with the strongly adhesive adhesive when using the previously described method. The treatment of the surface with high-energy radiation replaces the strongly adhesive adhesive and leads to an activation of the surface, which makes the latter itself highly adhesive, after the usual explanation by "incorporation" of oxygen atoms or ozone molecules, the wetting and adhesive properties of plastics in particular considerably improve on smooth materials such as glass.

In der Zeichnung ist ein Ausschnitt einer Isolierglaseinheit mit dem Abstandhalterband nach der Erfindung in einer beispielhaft gewählten Ausführungsform veranschaulicht. Es zeigt:

Fig. 1
das applizierte Abstandhalterband zwischen zwei Glasscheiben;
Fig. 2 bis 4
unterschiedliche Ausführungsformen des Abstandhalterbandes.
In the drawing, a detail of an insulating glass unit with the spacer strip according to the invention is illustrated in an exemplary embodiment selected. It shows:
Fig. 1
the applied spacer tape between two glass panes;
Fig. 2 to 4
different embodiments of the spacer band.

Fig. 1 zeigt ein Abstandhalterband 1 nach der Erfindung zwischen den Scheiben 2 und 3 einer Isolierglaseinheit. Auf den Scheiben 2 und 3 ist das Band 1 durch einen an sich bekannten stark adhäsiven Kleber 4, insbesonderer einen Kleber auf Arcrylatbasis, unverrückbar fixiert. Dieser Kleber befindet sich vorzugsweise schon vor dem Applizieren des Bandes 1 auf dessen Seitenflächen und wird, wie an sich bekannt, durch Abziehen von Schutzfolien unmittelbar vor dem Applizieren aktiviert. Da die bekannten, stark adhäsiven Kleber nicht dampfdiffusionsfest sind, befindet sich zwischen den Seitenflächen des Bandes und den Glasscheiben zusätzlich ein dampfdiffusionsfester Kleber 5, in der Regel ein Butylkleber. Dieser wird unmittelbar vor dem Applizieren des Bandes aufgetragen und behält dauerhaft seine zähelastischen Eigenschaften, wie ebenfalls bekannt. Der Überstand der Glasscheiben 2 und 3 über das Abstandhalterband 1 bildet die übliche, umlaufende Randfuge, die wie ebenfalls bekannt, im nächsten Herstellschritt mit einem polymerisierenden Kunststoff, insbesondere auf Polysulfidbasis, ausgefüllt wird (nicht dargestellt). Fig. 1 shows a spacer strip 1 according to the invention between the panes 2 and 3 of an insulating glass unit. On the discs 2 and 3, the band 1 is immovably fixed by a known per se adhesive adhesive 4, in particular an adhesive based on acrylate. This adhesive is preferably already before applying the tape 1 on the side surfaces and, as is known, activated by peeling off protective films immediately before applying. Since the known, strongly adhesive adhesives are not resistant to diffusion of vapor, is located between the side surfaces of the strip and the glass also has a vapor-resistant adhesive 5, usually a butyl adhesive. This is applied immediately before the application of the tape and permanently retains its viscoelastic properties, as also known. The supernatant of the glass sheets 2 and 3 on the spacer strip 1 forms the usual, circumferential edge joint, which is also known, in the next manufacturing step with a polymerizing plastic, in particular based on polysulfide, filled (not shown).

Das Abstandhalterband 1 besteht in dieser Ausführungsform aus einem Silikonmantel 1.1, hier aus offenporigem Silikonschaum (in Fig. 1 symbolisch angedeutet) und einem Kern, hier beispielsweise mit Kreisquerschnitt, aus einem kunstharzgebundenen Trockenmittel oder Trockenmittelgemisch 1.2.The spacer strip 1 consists in this embodiment of a silicone sheath 1.1, here from open-celled silicone foam (in Fig. 1 symbolically indicated) and a core, here for example with circular cross section, of a resin-bonded desiccant or desiccant mixture 1.2.

Die Aussenfläche des Abstandhalterbandes 1 ist mit einer dünnen Folie 1.3 aus rostfreiem Stahl abgedeckt. Diese Folie 1.3 kann auf das Abstandhalterband 1 z.B. auflaminiert sein. Die Folie ist so dünn und dehnbar, dass sie auch ein Abwinkeln des Bandes 1 (nach dem innenseitigen Ausstanzen von Eckkeilen) in den Ecken der Isolierglaseinheit ermöglicht, ohne das es zur Bildung von Mikrorissen kommt.The outer surface of the spacer strip 1 is covered with a thin sheet of stainless steel 1.3. This film 1.3 can be laminated on the spacer strip 1, for example. The film is so thin and stretchable that it also bends the tape 1 (after the inside punching corner wedges) in the corners of the insulating glass unit without microcracks forming.

Figur 2 zeigt eine ähnliche Ausführungsform des Abstandhalterbandes 1. Es umfasst eine Aussenfläche 11, zwei sich gegenüberliegende Seitenflächen 12 und 13 sowie eine Innenfläche 14. Von der Aussenfläche 11 aus gesehen haben die Seitenflächen 12 und 13 im Anschluß an die Ränder 11a und 11b der Aussenfläche 11 je eine eingezogene Teilfläche 12a und 13a. Die Stahlfolie 1.3 auf der Aussenfläche 11 ist um die Ränder 11a und 11b herum umgeschlagen, so dass die seitlichen Ränder der Stahlfolie 1.3 die Teilflächen 12a und 13a des Bandes teilweise überdecken. Die verbleibenden Bereiche der Seitenflächen sind wie in Fig. 1 mit dem Kleber 4 beschichtet. Wie im Fall der Figur 1 besteht das Band aus einem Silikonmantel 1.1 und hat einen Kernhohlraum 1.4 für das Trockenmittel. Der Silikonmantel 1.1 besteht in dieser Ausführungsform jedoch aus massivem, porenfreien Silikon. Zur Herstellung einer Diffusionsverbindung zwischen dem Kernhohlraum 1.4 und dem Innenraum der Scheibe ist die Innenfläche 14 des Bandes mit zahlreichen, hier vergrößert angedeuteten Mikrolöchern 1.5 versehen. FIG. 2 It comprises an outer surface 11, two opposing side surfaces 12 and 13 and an inner surface 14. Seen from the outer surface 11, the side surfaces 12 and 13 have the outer surface 11 depending on the edges 11a and 11b a retracted part surface 12a and 13a. The steel foil 1.3 on the outer surface 11 is folded around the edges 11a and 11b, so that the lateral edges of the steel foil 1.3 partially cover the partial surfaces 12a and 13a of the band. The remaining areas of the side surfaces are as in Fig. 1 coated with the adhesive 4. As in the case of FIG. 1 the band consists of a silicone sheath 1.1 and has a core cavity 1.4 for the desiccant. However, the silicone sheath 1.1 in this embodiment is made of solid, non-porous silicone. To produce a diffusion bond between the core cavity 1.4 and the interior of the disk, the inner surface 14 of the tape is provided with numerous microholes 1.5, which are indicated enlarged here.

Figur 3 zeigt eine ähnliche Ausführungsform, bei der jedoch der hier ebenfalls massive Silikonmantel 1.1 im Bereich der Innenfläche des Bandes einen schmalen Längsschlitz 1.6 hat, der eine wasserdampfdurchlässige Verbindung zwischen dem Scheibeninneren und dem Kernhohlraum 1.4 gewährleistet. Statt eines durchgehenden Schlitzes können mehrere voneinander getrennte und ggf. versetzt angeordnete Schlitze vorsehen sein. FIG. 3 shows a similar embodiment in which, however, the here also massive silicone sheath 1.1 in the region of the inner surface of the band has a narrow longitudinal slot 1.6, which ensures a water vapor permeable connection between the disc interior and the core cavity 1.4. Instead of a continuous slot, a plurality of separate and possibly staggered slots may be provided.

Figur 4 zeigt eine weitere Ausführungsform, die anstelle des schmalen Schlitzes 1.6 einen demgegenüber wesentlich breiteren Schlitz 1.7 in dem Silikonmantel 1.1 hat. Dieser Schlitz 1.7 ist mit einem offenporigen Kunststoff 1.8, z.B. wiederum Silikonschaum, ausgefüllt, durch den hindurch Wasserdampf aus dem Scheibeninnenraum zu dem Trockenmittel 1.2 diffundiert und von diesem absorbiert wird. FIG. 4 shows a further embodiment, which instead of the narrow slot 1.6 has a contrast significantly wider slot 1.7 in the silicone sheath 1.1. This slot is 1.7 with an open-pored plastic 1.8, eg again silicone foam, filled, is diffused through the water vapor from the disc interior to the desiccant 1.2 and absorbed by it.

Desweiteren sind in dieser Ausfertigungsform die Seitenflächen 12 und 13 des Bandes nicht mit dem stark adhäsiven Kleber 4 beschichtet, sondern erhalten ihre stark adhäsive Eigenschaft durch Bestrahlung mittels energiereicher Strahlung, z.B. nach dem Coronaverfahren, in der nicht dargestellten Appliziervorrichtung kurz vor dem Aufbringen der beidseitigen Butylstränge 5.Furthermore, in this embodiment, the side surfaces 12 and 13 of the tape are not coated with the high adhesive adhesive 4, but obtain their strong adhesive property by irradiation with high energy radiation, e.g. after the corona process, in the applicator, not shown, shortly before the application of the two-sided Butylstränge. 5

Claims (14)

  1. An insulating glass unit consisting of at least two glass panes (2, 3) provided with an elastoplastic spacer band (1) which comprises a jacket (1.1) and a core made of a drying agent (1.2), and side surfaces (12, 13) determined for adhesive contact on opposite pane surfaces, and an inner surface (14) facing as intended the interior space between the panes (2, 3) and, opposite of said inner surface, an outside surface (11) which is coated with a moisture barrier layer (1.3), characterized in that the jacket (1.1) consists of a silicone material, the drying agent (1.2) of the core is plastic-bonded, and the silicone jacket (1.1) and the drying agent core are co-extruded.
  2. An insulating glass unit according to claim 1, characterized in that the silicone jacket (1.1) is arranged to be permeable to water vapour at least in the region of the inner surface (14) of the band (1).
  3. An insulating glass unit according to claim 1 or 2, characterized in that the silicone jacket (1.1) is open-pored at least in the region of the inner surface (14) of the band (1).
  4. An insulating glass unit according to one of the claims 1 to 3, characterized in that the silicone jacket (1.1) is micro-perforated (1.5) at least in the region of the inner surface (14) of the band (1).
  5. An insulating glass unit according to one of the claims 1 to 4, characterized in that the silicone jacket (1.1) is slit (1.6; 1.7) at least in the region of the inner surface (14) of the band (1).
  6. An insulating glass unit according to claim 5, characterized in that the slit (1.7) in the region of the inner surface (14) of the silicone jacket (1.1) is filled by co-extrusion with an open-pored plastic (1.8).
  7. An insulating glass unit according to one of the claims 1 to 6, characterized in that the moisture barrier layer consists of a foil made of stainless steel (1.3).
  8. An insulating glass unit according to claim 7, characterized in that the steel foil (1.3) encompasses both edges (11a, 11b) of the band (1) between its outside surface (11) and its side surfaces (12, 13).
  9. An insulating glass unit according to claim 7 or 8, characterized in that each side surface (12, 13) of the band (1) comprises a longitudinally extending inserted partial area (12a, 13a) adjacent to the edge of the outside surface (11).
  10. An insulating glass unit according to claim 9, characterized in that the inserted partial areas (12a; 13a) of the side surfaces (12, 13) of the band (1) are arranged as undercuts, as seen from its outside surface (11).
  11. An insulating glass unit according to claim 9 or 10, characterized in that the surface parts of the steel foil (1.3) encompassing the edges (11a; 11b) at least partly cover the inserted partial areas (12a; 13a) of the side surfaces (12; 13) of the band (1).
  12. An insulating glass unit according to one of the claims 9 to 11, characterized in that at least the inserted partial areas (12a; 13a) of the side surfaces (12; 13) of the band (1) can be coated with a butyl adhesive (5).
  13. An insulating glass unit according to one of the claims 7 to 12, characterized in that the steel foil (1.3) is glued onto the band (1).
  14. An insulating glass unit according to one of the claims 7 to 13, characterized in that the steel foil (1.3) is connected to the band (1) by co-extrusion.
EP07008532A 2006-05-24 2007-04-26 Insulating glass unit with an elastoplastic spacer band and application method for the latter Not-in-force EP1860270B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006024402A DE102006024402B4 (en) 2006-05-24 2006-05-24 Insulating glass unit with an elastoplastic spacer tape and Applizzierverfahren for the latter

Publications (3)

Publication Number Publication Date
EP1860270A2 EP1860270A2 (en) 2007-11-28
EP1860270A3 EP1860270A3 (en) 2010-03-24
EP1860270B1 true EP1860270B1 (en) 2011-06-15

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EP07008532A Not-in-force EP1860270B1 (en) 2006-05-24 2007-04-26 Insulating glass unit with an elastoplastic spacer band and application method for the latter

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US (1) US7713600B2 (en)
EP (1) EP1860270B1 (en)
AT (1) ATE513110T1 (en)
DE (1) DE102006024402B4 (en)
ES (1) ES2371624T3 (en)

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GB201202284D0 (en) * 2012-02-09 2012-03-28 Thermoseal Group Ltd Spacer for use in a sealed multiple glazed unit
ITBO20120177A1 (en) * 2012-04-03 2013-10-04 Profilglass S P A SPACER AND BARRIER DEVICE FOR GLASS AND METHOD TO REALIZE IT
WO2013164464A2 (en) * 2012-05-03 2013-11-07 Electrolux Home Products Corporation N. V. An arrangement of glass panels for a heat insulated oven door for a cooking oven
GB2527731A (en) * 2014-04-10 2016-01-06 Thermoseal Group Ltd Glazing spacer bar
US9951553B2 (en) 2014-06-05 2018-04-24 Erdman Automation Corporation High speed parallel process insulated glass manufacturing line
EP3009589B1 (en) * 2014-10-13 2020-02-19 Technoform Glass Insulation Holding GmbH Spacer for insulating glazing units having a metal layer with enhanced adhesion properties
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US10253552B2 (en) 2016-04-21 2019-04-09 Erdman Automation Corporation High speed parallel process insulated glass manufacturing line
DK3728777T3 (en) 2017-12-22 2022-08-22 Saint Gobain SPACER WITH MOISTURE ABSORBING STRUCTURE AND CORRESPONDING MANUFACTURING PROCESS

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Also Published As

Publication number Publication date
ES2371624T3 (en) 2012-01-05
US20070275192A1 (en) 2007-11-29
EP1860270A3 (en) 2010-03-24
ATE513110T1 (en) 2011-07-15
US7713600B2 (en) 2010-05-11
EP1860270A2 (en) 2007-11-28
DE102006024402B4 (en) 2008-01-03
DE102006024402A1 (en) 2007-11-29

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