EP3850180A1 - Écarteur comprenant des parties latérales métalliques - Google Patents

Écarteur comprenant des parties latérales métalliques

Info

Publication number
EP3850180A1
EP3850180A1 EP19765243.1A EP19765243A EP3850180A1 EP 3850180 A1 EP3850180 A1 EP 3850180A1 EP 19765243 A EP19765243 A EP 19765243A EP 3850180 A1 EP3850180 A1 EP 3850180A1
Authority
EP
European Patent Office
Prior art keywords
spacer
metallic
connecting piece
polymeric
metallic side
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.)
Withdrawn
Application number
EP19765243.1A
Other languages
German (de)
English (en)
Inventor
Hans-Werner Kuster
Walter Schreiber
Jean-Christophe Lafon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3850180A1 publication Critical patent/EP3850180A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66314—Section members positioned at the edges of the glazing unit of tubular shape
    • 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
    • E06B3/66323—Section members positioned at the edges of the glazing unit comprising an interruption of the heat flow in a direction perpendicular to the unit
    • 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
    • E06B3/66366—Section members positioned at the edges of the glazing unit specially adapted for units comprising more than two panes or for attaching intermediate sheets
    • 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
    • E06B2003/6638—Section members positioned at the edges of the glazing unit with coatings
    • 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
    • E06B2003/66395—U-shape
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66314—Section members positioned at the edges of the glazing unit of tubular shape
    • E06B3/66319—Section members positioned at the edges of the glazing unit of tubular shape of rubber, plastics or similar materials

Definitions

  • the invention relates to a spacer for insulating glass units, a method for producing a spacer, an insulating glass unit, a method for producing an insulating glass unit and their use.
  • Insulating glazing generally contains at least two panes made of glass or polymeric materials. The disks are separated from one another by a gas or vacuum space defined by the spacer.
  • the thermal insulation capacity of insulating glass is significantly higher than that of single glass and can be further increased and improved in multiple glazing or with special coatings. For example, silver-containing coatings enable reduced transmission of infrared radiation and thus reduce the cooling of a building in winter.
  • Double glazing Especially the contact points between the spacer and the glass pane are very susceptible to temperature and climate fluctuations.
  • the connection between the disc and the spacer is produced by means of an adhesive connection made of organic polymer, for example polyisobutylene.
  • the glass In addition to the direct effects of temperature fluctuations on the physical properties of the adhesive connection, the glass itself has a particular effect on the adhesive connection.
  • the glass and the spacers have different thermal coefficients of linear expansion, which means that they expand
  • the heat-insulating properties of insulating glazing are very significantly influenced by the thermal conductivity in the area of the edge bond, in particular the spacer.
  • the high thermal conductivity of the metal leads to the formation of a thermal bridge at the edge of the glass.
  • This thermal bridge leads on the one hand to heat loss in the edge area of the insulating glazing and on the other hand to high condensation and low outside temperatures to the formation of condensate on the inner pane in the area of the spacer.
  • thermally optimized, so-called "warm edge” systems are increasingly being used, in which the spacers are made of materials with lower thermal conductivity, in particular plastics.
  • polymeric spacers are preferable to metallic spacers.
  • polymeric spacers have several disadvantages. On the one hand, the tightness of a pure polymer spacer against moisture and gas loss is not sufficient. There are various solutions here, in particular by applying a barrier film to the outside of the spacer (see for example WO2013 / 104507 A1). On the other hand, the linear expansion coefficients of plastics are much larger than those of glass, which leads to the problems described above.
  • the plastic boundaries each have a thickness of at least 1 mm so that the side parts can be attached as described. With this thickness, the thermal conductivity is comparatively high due to the boundaries to the space between the panes, which leads to less than optimal heat insulation in the area of the edge bond.
  • the object of the present invention is achieved according to the invention by a spacer for insulating glass units according to independent claim 1.
  • Preferred embodiments of the invention emerge from the subclaims.
  • a method for producing a spacer according to the invention, an insulating glass unit according to the invention, a method for producing the insulating glass unit according to the invention and their use according to the invention are evident from further independent claims.
  • the spacer according to the invention for insulating glass units comprises at least one U-shaped base body extending in the longitudinal direction (X direction).
  • the base body contains a first metallic side part, a second metallic side part arranged parallel thereto and a polymer connecting piece extending in the transverse direction (Y direction), which connects the two metallic side parts to one another and produces the necessary rigidity of the base body.
  • the polymeric connector forms the lower boundary of the base body and defines the distance between the outer glass panes in the finished insulating glass unit. In the finished insulating glass unit, the lower limit is that which points in the direction of the outer space between the panes.
  • the space between the base body is located above the polymeric connecting piece between the metallic side parts.
  • the gap points in the finished insulating glass unit in the direction of the inner pane gap.
  • the first and second metallic side parts have a side wall for connection to a glass pane and a holding arm.
  • the side wall of a metallic side part is used in the finished insulating glass unit for fastening a glass pane.
  • the side wall and the holding arm protruding into the intermediate space form a mounting groove which runs essentially parallel to the side wall.
  • the mounting groove is used to attach the polymeric connector.
  • the polymeric connector is U-shaped and has two legs. These legs are inserted in the mounting grooves of the two metal side parts.
  • the spacer according to the invention is significantly improved compared to the known spacers. Due to the design with two metallic side parts, the glass panes are securely fastened over the long term, since the coefficients of linear expansion of glass and metals do not differ as much as those of glass and polymers. This means that the mechanical load on the glass / spacer connection point is significantly reduced compared to pure polymeric spacers.
  • the polymeric connector which creates the distance between the two glass panes, leads to a significant improvement in thermal insulation compared to purely metallic spacers. Due to the separation of the two metal side parts, there is no continuous thermal bridge between the two outer glass panes.
  • the type of fastening of the U-shaped polymeric connecting piece via the two legs in the two mounting grooves of the metallic side parts running parallel to the side walls ensures a long-term stable connection of the individual components of the base body. Even when the insulating glass unit heats up considerably, with the glass panes bulging outwards to the sides and thus pulling the metal side parts apart to a certain extent in the transverse direction (Y direction), there is a secure fastening in the mounting grooves. It is not possible to slip out. Since the base body is U-shaped, the side parts can participate in movements of the glass panes when the temperature changes, since the two legs can be pressed or pulled outwards or inwards. This is a major advantage compared to closed rigid hollow profile spacers.
  • a particular advantage of the modular structure is that the spacer according to the invention can be manufactured for any distance between the glass panes, only the width of the polymeric connecting piece having to be adjusted.
  • the metallic Side panels can be used for any polymeric connector. This significantly increases the flexibility of production compared to conventional spacers.
  • Another advantage of the modular design is the possibility of being able to disassemble the spacer into its individual components after the service life of the insulating glass unit has ended and thus to recycle it.
  • the spacer according to the invention thus offers an improved solution over the prior art in many respects.
  • the two metallic side parts each have a fixing overhang, which in each case surrounds a corner region of the U-shaped polymer connecting piece.
  • This fixation protrusion ensures a secure fixation of the polymeric connecting piece in the assembly groove and protects against damage to the base body at the connection between the polymeric connecting piece and the metallic side part.
  • the fixing protrusion is preferably designed as an extension of the side wall of a metallic side part and then bent around the corner region of the U-shaped polymer connecting piece or bent along a pre-made notch.
  • the fixation protrusion preferably forms an angle of approximately 90 degrees with the side wall.
  • the fixing projection of a side part extends in the transverse direction at least up to the holding arm, so that the polymeric connecting piece is clamped between the fixing projection and the holding arm.
  • a fixation protrusion preferably extends at most so far that a minimum area of 2 mm of the polymeric connecting piece remains free. This minimum distance ensures that an effective thermal separation is realized, so that no heat transfer takes place from the first metallic side part to the second metallic side part.
  • the polymeric connector typically has a thermal conductivity between 0.1 and 0.5 W m- 1 K 1 .
  • the polymeric connecting piece contains polyethylene (PE), polycarbonate (PC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene terephthalate glycol (PET-G), polyoxymethylene (POM), polyamides, polybutylene terephthalate (PBT), PET / PC, PBT / PC and / or copolymers thereof.
  • the polymeric connector essentially consists of one of the listed polymers. These materials offer the necessary stability even with small thicknesses.
  • the polymeric connector particularly preferably consists of PET.
  • the total thickness of the polymeric connecting piece is between 0.1 mm and 5 mm, preferably between 0.2 mm and 2 mm. With these small thicknesses, the heat conduction is reduced by the polymeric connector and at the same time the stability is sufficient for use in double glazing.
  • the polymeric connecting piece comprises at least one moisture-tight barrier.
  • the moisture-proof barrier prevents moisture from penetrating into the inner space between the panes and thus prevents the panes from fogging up from the inside.
  • the barrier improves the gas tightness of the insulating glass unit, which is important if there is a gas filling. The service life of the insulating glazing with the spacer according to the invention is thus extended.
  • the moisture-tight barrier can be a metal coating, a ceramic coating, a metal foil, a polymer foil or a multi-layer foil with polymeric and metallic layers or with polymeric and ceramic layers or with polymeric, metallic and ceramic layers.
  • barrier films known to the person skilled in the art are suitable, as are already used for conventional polymeric hollow profile spacers according to the prior art and as described for example in documents WO2013 / 104507 A1, WO2016 / 046081 A1, WO2012 / 140005 A1.
  • the moisture-tight barrier is preferably a metal-containing barrier coating or a metal-containing barrier film.
  • Metal-containing coatings and foils seal particularly well against the ingress of water, since they contain at least one metallic layer.
  • the thickness of this at least one metallic layer is between 0.01 pm and 0.2 pm.
  • Several thin metallic layers with a thickness of between 0.01 pm and 0.1 pm are preferably used. A particularly good seal of the barrier film is achieved within the layer thicknesses mentioned.
  • Metallic layers or coatings contain or consist of preferably iron, aluminum, silver, copper, gold, chromium and / or alloys or oxides thereof, particularly preferably aluminum and / or aluminum oxide.
  • a polymeric layer of the barrier film preferably comprises polyethylene terephthalate, ethylene vinyl alcohol, polyvinylidene chloride, polyamides, polyethylene, polypropylene, silicones, acrylonitriles, polyacrylates, polymethylacrylates and / or copolymers or mixtures thereof.
  • Ceramic layers or coatings preferably contain or consist of silicon oxides and / or silicon nitrides.
  • the polymeric connecting piece comprises at least one moisture-tight barrier which is arranged on the side of the polymeric connecting piece facing the intermediate space.
  • the moisture-proof barrier is thus protected from damage during installation in the insulating glazing or during storage and transportation of the spacer.
  • the moisture-proof barrier is arranged at least on that part of the polymeric connecting piece which extends in the transverse direction between the first metallic side part and the second metallic side part. This ensures a good seal of the inner space between the panes, since then there is a closed sealing layer made of metallic side parts and an adjacent moisture-proof barrier. It is particularly preferred that at least one side of the polymeric connector is completely covered with the moisture-proof barrier. This is easy to manufacture in terms of production technology and ensures a particularly good seal.
  • the polymeric connecting piece contains an adhesion promoter layer on the side facing away from the intermediate space, which layer serves to improve the adhesion of the secondary sealant in the finished insulating glazing.
  • This adhesive layer is the outermost layer placed on the polymeric connector so that it is in contact with the secondary sealant in the finished double glazing.
  • a chemical pretreatment, a metal-containing thin layer or a ceramic thin layer can be used as the adhesion promoter layer.
  • a thin layer preferably has a thickness between 5 nm and 30 nm.
  • a sealing means such as a polyisobutylene (butyl) is provided in the mounting groove.
  • the sealant ensures a moisture-tight connection between the metal side parts and the polymeric connecting piece, so that moisture does not penetrate into the inner space between the panes.
  • the sealing means is preferably applied in the assembly groove at the point at which the holding arm adjoins the side wall. So this is the part of the mounting groove that is closest to the inner space between the panes. If the sealant is pre-applied in the metallic side parts and then the polymeric connector is inserted, a perfect seal is achieved because part of the sealant is displaced by the polymeric connector and is thus distributed in the mounting groove.
  • the sealing means is preferably provided in the mounting groove as a butyl cord. This is easy to apply and offers an excellent seal.
  • the metallic side parts preferably contain or consist of aluminum, stainless steel or steel. These materials are easy to process and deliver particularly good results when adjusting the coefficient of linear expansion. Extruded metallic side parts particularly preferably consist essentially of aluminum, since this can be extruded particularly well. Metallic side parts produced by roll forming particularly preferably consist of a coated steel, which is preferably coated with an adhesion promoter. Compared to aluminum, steel has a lower thermal conductivity and good linear expansion. In addition, steel is very stable and less expensive than stainless steel.
  • the metallic side parts preferably have a wall thickness of 0.05 mm to 1.5 mm. In this area, the spacer is stable and at the same time flexible enough to be easily bendable into a spacer frame.
  • the two metallic side parts each comprise an assembly groove which extends along the entire height of the side wall extends. This means that the holding arm runs essentially over the entire height of the side wall parallel to the side wall.
  • the mounting groove has its maximum size, whereby a particularly stable fixation of the U-shaped polymer connecting piece is achieved.
  • the height of the side wall corresponds to the extension of the side wall in the Z direction and corresponds to the height of the spacer.
  • the two metallic side parts comprise a mounting groove which extends over at least 40% of the height of the respective side wall, but not over the entire height of the side wall.
  • the material expenditure for the polymeric connecting piece and the metallic side part is less, since the holding arm is shorter and the mounting groove is smaller. Nevertheless, a stable fixation of the polymeric connector can be achieved.
  • the mounting groove particularly preferably extends over at least 50% of the height of the respective side wall, since this provides good fixation.
  • the mounting grooves have a profile which improves the fixation of the polymeric connecting piece.
  • the profiling is preferably arranged in the form of longitudinal grooves which extend in the longitudinal direction (X direction).
  • barbs can also be attached in the assembly groove, which ensure good retention of the legs of the polymeric connecting piece.
  • a profile is particularly preferably arranged on the holding arm and the side wall.
  • the metallic side parts are produced by roll molding.
  • Metallic side parts made by roll forming are thinner and therefore less expensive due to the lower material thickness. Manufacturers who have the appropriate machines at their disposal can easily manufacture the metal side parts.
  • the metallic side parts preferably have a wall thickness of 0.05 mm to 0.5 mm. These material thicknesses can be easily processed and are still stable.
  • the metallic side parts are produced by extrusion. All that is required is a suitable mold that corresponds to the cross section of the metal side parts. The purchase of such a molding tool is already profitable for lower production numbers.
  • Side parts produced by extrusion are generally somewhat thicker and therefore have a higher stability.
  • Side parts produced by extrusion preferably have a wall thickness of approximately 0.5 mm to 1.5 mm.
  • a drying agent is arranged in the intermediate space of the spacer.
  • Suitable drying agents are, for example, silica gels, molecular sieves, CaCh, Na 2 S0 4 , activated carbon, silicates, bentonites, zeolites and / or mixtures thereof.
  • the desiccant is used to absorb moisture from the inner space between the panes and thus prevent the panes from fogging up.
  • the desiccant is arranged as bulk material in the intermediate space.
  • the desiccant is preferably integrated into the intermediate space in the form of at least one coherent desiccant body.
  • a desiccant body is preferably in the form of a band or hose which is fastened in the intermediate space.
  • a desiccant body is preferably only attached to one of the metallic side parts and is not in contact with the other metallic side part. The desiccant body thus does not extend in the transverse direction (Y direction) over the entire space. This prevents the transfer of heat from one metallic side part to the other metallic side part, which leads to improved thermal insulation.
  • a gap of at least 2 mm preferably remains between the individual desiccant bodies, measured as a distance in the transverse direction (Y direction). This ensures effective thermal separation.
  • the desiccant body is preferably arranged such that it is also not in contact with the polymeric connecting piece.
  • the desiccant body is preferably a prefabricated body in which the desiccant is enclosed, thereby preventing the desiccant from being freely distributed in the inner space between the panes.
  • the drying agent is preferably integrated in a binder, particularly preferably co-extruded with this. This is particularly easy to manufacture and prevents the desiccant from spreading in the inner space between the panes.
  • the desiccant tape obtained in this way can then be fastened in the intermediate space of the spacer, so that a complete prefabricated spacer is produced which can be assembled into a frame and can then be installed directly in the insulating glazing.
  • Various polymers or their foams such as polyurethanes and are suitable as binders Silicones.
  • the desiccant is preferably surrounded as a bulk material by a thin, water vapor-permeable sheath and then fastened in the space between the spacers.
  • a cover film is attached to the side in the insulating glass facing the inner space between the panes. This cover film extends in the transverse direction between the first metallic side part and the second metallic side part and thus closes off the intermediate space to form a cavity.
  • the cover film is a stretchable and flexible film that can follow the movements of the spacer when the insulating glass unit heats up (bulging the panes) and cools down the insulating glass unit (bulges the panes) without tearing and preferably without forming waves when the material shrinks cold temperatures.
  • the cover film is preferably permeable to water vapor so that desiccant arranged in the space can absorb moisture.
  • the cover film serves to improve the visual appearance of the spacer and obscures the view of any desiccant present. It also prevents particles of a desiccant from entering the inner space between the panes. It can be printed with labels or patterns as desired and can be colored according to customer requirements. In the finished insulating glazing, only the cover film is essentially visible from the spacer.
  • the cover film can be attached by gluing, welding, clamping or other suitable attachment methods.
  • the cover film preferably surrounds the two metallic side parts in the upper region at least partially, so that it is arranged in the finished insulating glazing between the glass pane or primary sealant and the side wall of the metallic side part.
  • the cover film can be made of any material that preferably has a low thermal conductivity between 0.1 and 0.5 W nr 1 K 1 .
  • the cover film contains or consists of preferably polyethylene terephthalate (PET), polypropylene (PP), polyvinyl chloride (PVC), polyimide (PI), polytetrafluoroethylene (PTFE), or wood, leather, a composite material containing polymer and wood, or another suitable material.
  • PET polyethylene terephthalate
  • PP polypropylene
  • PVC polyvinyl chloride
  • PI polyimide
  • PTFE polytetrafluoroethylene
  • wood leather, a composite material containing polymer and wood, or another suitable material.
  • the material is preferably resistant to UV radiation and may contain suitable stabilizers. However, it is designed so that no outgassing of volatile substances can occur, which leads to a Fogging of the glass panes in the inner space between the panes would result (fogging).
  • the cover film is preferably permeable to water vapor.
  • the cover film has at least one, preferably several perforations.
  • the total number of perforations depends on the size of the insulating glass unit.
  • the perforations in the cover film connect the space with the inner space between the panes, which enables gas exchange between them. This allows the absorption of atmospheric moisture by a desiccant in the gap and prevents the windows from fogging up.
  • the material of the cover film is porous or made of a material which is open to diffusion, so that no perforations are required.
  • the spacer comprises at least one incision with a V-shaped cross section (V-shaped incision).
  • the incision extends in the transverse direction (Y direction) of the spacer.
  • the V-shaped notch is used to bend the spacer at this point to a corner of a spacer frame.
  • the V-shaped incision is arranged such that the open side of the V is arranged on the upper side of the spacer, that is to say on the side which faces the inner space between the panes.
  • the tip of the V only extends to the base of the U-shaped polymeric connector, so that the polymeric connector is not cut. So the corner of the spacer frame formed remains closed by the polymeric connector.
  • the base of the U-shaped polymeric connecting piece is the part that connects the two legs, that is, that extends between the two metallic side parts in the Y direction.
  • the first and second metallic side parts preferably each have a fixing projection which is likewise not touched by the incision.
  • the fixation projection after bending offers an additional stabilizing effect in the corner of the spacer frame.
  • the spacer has a width of 5 mm to 55 mm, preferably 12 mm to 33 mm.
  • the width is the dimension extending between the side walls.
  • the width of the spacer is the distance between the surfaces of the two side walls of the first and second that face away from one another metallic side panels.
  • the distance between the panes of the insulating glass unit is determined by the choice of the width. The exact dimension depends on the dimensions of the insulating glass unit and the desired space between the panes.
  • the spacer preferably has a height of 5 mm to 15 mm, particularly preferably 6 mm to 9 mm, along the side walls. In this area for the height, the spacer has an advantageous stability, but on the other hand is advantageously inconspicuous in the insulating glass unit. In addition, the spacing of the spacer has an advantageous size for receiving a suitable amount of desiccant.
  • the spacer comprises at least one receiving profile for an additional disk. Thanks to the receiving profile, the spacer according to the invention can accommodate a central pane and is therefore suitable for triple glazing or, if applicable, quadruple glazing.
  • the receiving profile is arranged between the first metallic side part and the second metallic side part and has a receiving groove for the additional disk which extends in the longitudinal direction (X direction). The receiving profile divides the space of the spacer into a first space between the first metallic side part and the receiving profile and a second space between the receiving profile and the second metallic side part.
  • the receiving groove preferably has a cross section in the form of a U or V.
  • an additional disk can be fixed well.
  • the receiving profile is produced as a metallic receiving profile.
  • the metallic profiles are easy to process and manufacture and have the necessary stability to stabilize the middle pane.
  • the tightness in the area of the receiving groove is ensured by the metallic design.
  • the metallic receiving profile is preferably produced by extrusion or roll molding.
  • the receiving profile is particularly preferably produced using the same method as the metallic side parts. This means that only one technique is required to manufacture the metallic parts.
  • the U-shaped polymeric connecting piece is subdivided into a first U-shaped polymeric connecting piece and a second U-shaped polymeric connecting piece by the receiving profile.
  • the mounting profile has a first inner mounting groove and a second inner mounting groove.
  • One leg of the first U-shaped polymeric connector is received in the first inner mounting groove and one leg of the second polymeric connector is received in the second inner mounting groove.
  • the first intermediate space is thus delimited by the first metallic side part, the first U-shaped polymeric connecting piece and the receiving profile.
  • the second space is delimited by the receiving profile, the second U-shaped polymeric connecting piece and the second metallic side part.
  • the receiving profile has a first inner fixing projection which surrounds the corner region of the first U-shaped polymeric connecting piece and by means of which the first polymeric connecting piece is fixed in the first inner mounting groove.
  • the receiving profile has a second inner fixing projection which surrounds the corner region of the second U-shaped polymeric connecting piece and by means of which the second polymeric connecting piece is fixed in the second inner mounting groove.
  • the two inner fixation projections preferably extend in the transverse direction over 0.5% to 20% of the entire width of the U-shaped base body, preferably over 1% to 10% of the entire width. However, they only extend to such an extent that the inner fixing protrusions are not in contact with the fixing protrusions of the metal side parts, so that there is no heat-conducting connection between two panes in the insulating glazing.
  • An insert is preferably arranged in the receiving groove, which prevents the pane from slipping and the resulting noise when opening and closing the window.
  • the insert also compensates for the thermal expansion of the third pane when heated, so that a tension-free fixation is guaranteed regardless of the climatic conditions.
  • materials for the insert include polymer foams or sealants Question, butyl sealants, thermoplastic elastomers, thermoplastic elastomers based on urethane, silicone sealants or an ethylene-propylene-diene rubber are preferred.
  • the insert is preferably gas-permeable, so that in the finished insulating glazing an air or gas exchange between the two inner pane interspaces is possible, which are separated by the additional pane. This enables pressure equalization between the inner space between the panes and thus leads to a significant reduction in the load on the middle pane.
  • a cover film is arranged in the transverse direction (Y direction) between the first metallic side part and the second metal side part, which is subdivided into a first cover film and a second cover film by the receiving profile.
  • the first cover film extends from the first metallic side part to the receiving profile in the transverse direction and closes off the first intermediate space.
  • a second cover film extends from the mounting profile to the second metallic side part and closes off the second space.
  • the first and second cover films serve primarily for aesthetic purposes and improve the visual appearance of the spacer in the finished insulating glazing, as has already been described above for the cover film.
  • the receiving profile preferably has a first support projection projecting in the direction of the first intermediate space and a second support projection projecting in the direction of the second intermediate space, on which the first or the second cover film is fastened. This simplifies attachment, for example by gluing to the mounting profile.
  • the attachment to the metal side parts has already been described above. Analogous support projections can also be attached to the metal side parts.
  • the invention further comprises a method for producing a spacer according to the invention at least comprising the following steps:
  • the two metal side parts are either extruded or bent from a metal sheet using rollers.
  • the advantage of extrusion is the comparatively low purchase cost of a suitable mold, with which the metallic side parts can be produced on a large scale. These side parts can then be used in large quantities to produce a wide variety of spacers with different widths or with additional mounting profiles.
  • the advantage of roll forming is that very thin sheets can be used. This reduces the pure material costs for the later spacer.
  • step b) the U-shaped polymeric connector is provided.
  • a suitable piece of film is bent, pressed or extruded in a U-shape. Depending on the material, this can happen with heating.
  • the polymeric connector specifies the width of the spacer. Any moisture-tight barrier that may be present can be attached before or after the U-shape is produced.
  • step c) the U-shaped polymeric connector is inserted into the mounting grooves of the two metallic side parts. This can be done fully automatically, since the metallic side parts only have to be pushed onto the polymeric connector.
  • the U-shaped polymeric connector can be attached in various ways. Pinching by pressing a holding arm is preferred. Alternatively, attachment using an adhesive is preferred.
  • the method according to the invention comprising steps a) to c) thus offers a simple possibility of producing a spacer from a few prefabricated components.
  • the spacer can be assembled automatically or manually. Thanks to the modular structure, production can be easily adapted to different products.
  • the two metallic side parts each contain a fixation protrusion, which in step a) is designed as an extension in the Z direction of the respective side wall.
  • the side wall and the fixation protrusion thus enclose an angle ⁇ (beta) of 180 degrees.
  • step c) the U-shaped polymer connecting piece is first inserted into the mounting groove and then the fixing protrusion is bent over so that the fixing protrusion surrounds the corner region of the U-shaped polymer connecting piece for fastening the U-shaped polymer connecting piece.
  • This is a simple and effective way to fix the polymeric connector in the mounting groove.
  • This embodiment is particularly preferred if the metallic side parts in step a) have been produced by extrusion. In this case, a kink can already be provided during the extrusion of the metallic side parts, at which the thickness of the metal is less than in the rest of the side wall, so that the bending of the fixing projection in step c) is facilitated.
  • the metallic side parts in step a) are designed such that the holding arm projects from the side wall by an angle a (alpha) greater than zero and less than 90 °.
  • the position of the assembly groove is thus already predetermined by a preformed sheet.
  • the respective holding arm is then pressed or bent in the direction of the side wall after insertion of the U-shaped polymeric connecting piece, so that the U-shaped polymeric connecting piece is fixed in the mounting grooves.
  • This embodiment of the method according to the invention is particularly preferred if the metallic side parts in step a) are produced by roll molding. The pre-bending of the holding arms can be done particularly well and easily in the roll forming process.
  • a desiccant is arranged in the intermediate space of the spacer. This can be done at various points in the process.
  • the desiccant is preferably applied in the form of a coherent desiccant body. This is preferably done after step c), the drying agent body being fastened in the intermediate space, preferably by extrusion.
  • one of the metallic side parts or an optionally present receiving profile is provided with a desiccant body and then this prepared metallic side part or receiving profile is connected to the U-shaped polymeric connecting piece in step c).
  • a cover film is attached after step c) and, if appropriate, after application of a desiccant, so that the intermediate space is closed off by the cover film.
  • a sealing agent preferably a butyl cord
  • the assembly groove preferably extruded, injected or inserted, before step c).
  • the metallic side part is particularly preferably heated in the region of the sealing means before the U-shaped polymeric connecting piece is inserted. This increases the flowability of the sealant, such as butyl.
  • the spacer comprises a receiving profile for an additional disk and the U-shaped polymeric connecting piece is divided into a first and second polymeric connecting piece, as previously described for the spacer with a receiving profile.
  • the receiving profile is additionally produced by extrusion or roll molding.
  • the first and second polymeric connecting pieces are then provided in step b).
  • step c) the legs of the first and second polymeric connecting pieces are inserted into the mounting grooves of the two metal side parts and at the same time inserted into the inner mounting grooves of the receiving profile.
  • the attachment takes place as previously described for the method according to the invention.
  • the preferred embodiments of the method according to the invention which have already been described apply analogously to the method for producing the spacer with the receiving profile.
  • the invention further comprises a further alternative method for producing a spacer according to the invention.
  • the procedure includes at least the following steps:
  • step c) bending the first metallic sheet around the polymeric strip, and bending the second metallic sheet around the polymeric strip, so that the assembly grooves of the two metallic side parts are already produced, d) roll forming the workpiece produced in step c) into a U-shaped base body .
  • This alternative method has the advantage that there are fewer individual process steps than in the separate production of the metallic side parts and the polymeric connecting piece. Thus, this is a simple, elegant method for producing a spacer according to the invention.
  • a sealant is applied to the two edges of the polymeric strip of the polymeric connecting piece before step c), so that a sealant is arranged in the assembly groove in the finished spacer.
  • the invention further comprises an insulating glass unit with at least a first pane, a second pane, a circumferential spacer according to the invention arranged between the first and second pane, an inner pane space and an outer pane space.
  • the spacer according to the invention is arranged in a circumferential spacer frame.
  • the first disc is attached to the side wall of the first metallic side part of the spacer via a primary sealant
  • the second disc is attached to the side wall of the second metallic side part of the spacer via a primary sealant.
  • a primary sealant is arranged between the side wall of the first metallic side part and the first disc and between the side wall of the second metallic side part and the second disc.
  • the first disk and the second disk are arranged in parallel and preferably congruently.
  • the edges of the two panes are therefore preferably arranged flush in the edge region, that is to say they are at the same height.
  • the spacer delimits the inner space between the panes and the outer space between the panes and separates them from one another.
  • the inner space between the panes is covered by the first and second panes and the inward-facing part, that is, the cover film, if necessary. limited.
  • the outer space between the panes is defined as the space which is delimited by the first pane, the second pane and the outwardly facing part of the spacer, that is to say essentially by the polymeric connecting piece.
  • the outer space between the panes is at least partially covered with a secondary sealant.
  • the secondary sealant contributes to the mechanical stability of the insulating glass unit and absorbs some of the climate loads that act on the edge bond.
  • a particular advantage of the insulating glass unit according to the invention is that the primary sealant is only in contact with the metallic side parts and not with polymeric areas of the spacer. In this way, there can be no leakage that can occur due to interface diffusion, as often occurs in the case of conventional spacers according to the prior art, at the interfaces between metallic foils and the polymeric base body.
  • the secondary sealant is applied along the first pane and the second pane in such a way that a central region of the polymeric connecting piece is free of secondary sealant.
  • the middle region denotes a region which is located away from these discs with respect to the two outer discs, in contrast to the two outer regions of the polymeric connecting piece which are adjacent to the first disc and second disc.
  • the secondary sealant is attached in such a way that the entire outer space between the panes is completely filled with secondary sealant. This leads to maximum stabilization of the insulating glass unit.
  • the secondary sealant preferably contains polymers or silane-modified polymers, particularly preferably organic polysulfides, silicones, room temperature crosslinking (RTV) silicone rubber, peroxidically crosslinked silicone rubber and / or addition cross-linked silicone rubber, polyurethane and / or butyl rubber. These sealants have a particularly good stabilizing effect.
  • polymers or silane-modified polymers particularly preferably organic polysulfides, silicones, room temperature crosslinking (RTV) silicone rubber, peroxidically crosslinked silicone rubber and / or addition cross-linked silicone rubber, polyurethane and / or butyl rubber.
  • the primary sealant preferably contains a polyisobutylene.
  • the polyisobutylene can be a crosslinking or non-crosslinking polyisobutylene.
  • the first pane and the second pane of the insulating glass unit preferably contain glass, ceramic and / or polymers, particularly preferably quartz glass, borosilicate glass, soda-lime glass, polymethyl methacrylate or polycarbonate.
  • the first disk and the second disk have a thickness of 2 mm to 50 mm, preferably 3 mm to 16 mm, it being possible for both disks to have different thicknesses.
  • the spacer frame consists of one or more spacers according to the invention.
  • it can be a spacer according to the invention, which is bent into a complete frame. It can also be a plurality of spacers according to the invention, which are linked together via one or more connectors.
  • the connectors can be designed as longitudinal connectors or corner connectors. Such corner connectors can be designed, for example, as a molded plastic part with a seal in which two spacers provided with a fermentation cut collide.
  • the spacer is provided with V-shaped incisions.
  • the spacer can be bent at the V-shaped incisions so that there is a corner of the spacer frame.
  • the corners are closed at the interfaces by welding or gluing. In this way, the spacer frame is stable and easy to manufacture without additional corner connectors or longitudinal connectors.
  • the insulating glass unit In principle, a wide variety of geometries of the insulating glass unit are possible, for example rectangular, trapezoidal and rounded shapes.
  • the insulating glazing comprises more than two panes.
  • the spacer according to the invention can have a receiving profile contain a receiving groove in which at least one further disk is arranged.
  • a plurality of panes can also be designed as a laminated glass pane.
  • the invention further comprises a method for producing an insulating glass unit according to the invention, comprising the steps:
  • the insulating glass unit is produced manually or by machine on multiple glazing systems known to the person skilled in the art.
  • a spacer according to the invention is provided. This spacer is formed into a spacer frame.
  • the spacer frame is preferably produced by bending the spacer according to the invention into a frame which is closed at one point by welding, gluing and / or with the aid of a plug connector.
  • a first washer and a second washer are provided and the spacer is fixed between the first and second washers by a primary sealant.
  • the outer space between the panes is at least partially filled with a secondary sealant.
  • the invention further includes the use of the insulating glass unit according to the invention as building interior glazing, building exterior glazing and / or facade glazing.
  • the invention is explained in more detail below with reference to drawings.
  • the drawings are purely schematic and are not to scale. They do not limit the invention in any way. Show it:
  • Figure 1 shows a cross section of a possible embodiment of a
  • Figure 2 shows a cross section of a possible embodiment of a
  • Figure 3 shows a cross section of another possible embodiment of a
  • Figure 4 is a perspective side view of an inventive
  • Figure 5 is a side perspective view of a curved segment
  • Figure 6 is a schematic representation of a method according to the invention.
  • Figure 1 shows a cross section through a spacer I according to the invention.
  • the spacer extends in the longitudinal direction, which is represented here by the X-axis.
  • the spacer I has a U-shaped base body 1, which extends in the X direction.
  • the base body 1 contains the first metallic side part 2.1 and the second metallic side part 2.2 arranged parallel to it on the opposite side.
  • the two metallic side parts 2.1 and 2.2. are connected by a U-shaped polymer connector 3.
  • the U-shaped polymeric connector extends transversely, which is shown here through the Y axis.
  • the polymeric connecting piece 3 forms the lower boundary of the base body 1 and delimits the intermediate space 11 which is located between the first and second metallic side parts and above the polymeric connecting piece.
  • the terms below and above refer to the Z axis.
  • the Z axis is defined as the direction that is orthogonal to the longitudinal axis X and the transverse axis Y. Above denotes the area which points in the direction of the inner space between the panes and below denotes the area which points in the direction of the outer pane space.
  • the two metallic side parts each have a side wall 7 and a holding arm 8, which together form a mounting groove 6.
  • the mounting groove 6 of the first metallic side part 2.1 takes the first leg 3.1 of the U-shaped polymer Connector 3 and the mounting groove 6 of the second metallic side part 2.2 receives the second leg 3.2 of the U-shaped polymeric connector 3.
  • the mounting groove 6 runs essentially parallel to the side wall 7.
  • the mounting grooves 6 have a profile in the form of longitudinal grooves which extend in the longitudinal direction (X).
  • the longitudinal grooves are both on the side wall 7 and on the holding arm 8. This profiling improves the fixation of the polymeric connector in the mounting grooves.
  • the first and second metallic side parts 2.1 and 2.2 are, for example, made of aluminum in the extrusion process and have a uniform wall thickness (thickness of the side wall and holding arm) of 0.8 mm.
  • the two metallic side parts 2.1 and 2.2 each have a fixing projection 9, which is designed as an extension of the respective side wall 7.
  • the fixing protrusion 9 of the second metallic side part 2.2 is bent around the corner region 12.2 of the U-shaped polymeric connecting piece 3 and fixes the polymeric connecting piece 3 in the assembly groove 6.
  • the bent fixing protrusion 9 prevents the polymeric connecting piece 3 from slipping out and increases the stability of the Spacer.
  • the angle ⁇ (beta) between the fixing projection 9 of the second metallic side part 2.2 and the associated side wall 7 is approximately 90 degrees.
  • the fixing projection 9 of the first metallic side part 2.1 is not yet bent in the drawing and includes an angle ⁇ (beta) of approximately 180 degrees with the associated side wall 7.
  • a prefabricated notch is visible at the transition between the side wall 7 and the fixing projection 9.
  • the fixing projection 9 can be bent in the direction of the dashed arrow during the manufacture of the spacer.
  • both fixation projections are bent over and enclose the corner regions 12.1 and 12.2 of the polymeric connecting piece.
  • the polymeric connector 3 has, for example, a total thickness of 0.3 mm and is made of polyethylene terephthalate (PET). This provides good stability for the Spacers and at the same time the heat conduction is low thanks to the low material thickness.
  • PET polyethylene terephthalate
  • the moisture-tight barrier 4 prevents the penetration of moisture into the inner space between the panes. Together with the metallic side parts 2.1 and 2.2, a complete seal against moisture is formed from the outer space between the panes. Even moisture, which may be bound in the material of the polymeric connector 3, cannot get into the inner space between the panes.
  • the moisture-proof barrier 4 is a metal-containing barrier film in the example.
  • the barrier film comprises two aluminum layers with a thickness of 20 nm each and two PET layers each with 12 pm.
  • the polymer layers and the metallic layers are arranged alternately.
  • Such a film provides an excellent seal against the penetration of moisture.
  • An adhesion promoter layer 15 in the form of a 10 nm thick coating of aluminum and aluminum oxide is attached to the side of the polymeric connecting piece facing the outer space between the panes. This adhesive layer 15 improves the adhesion to the secondary sealant 25 in the finished insulating glass unit.
  • a sealing means in the form of a butyl cord 13 is provided in the mounting groove 6 of the two metallic side parts 2.1 and 2.2.
  • the butyl seals the connection between the polymeric connector 3 and metallic side parts 2.1 and 2.2 and thus improves the tightness of the spacer.
  • a drying agent in the form of an extruded drying agent body 10 is arranged in the intermediate space 11 of the spacer.
  • the desiccant body is made of a silicone as a binder with an integrated molecular sieve.
  • the Desiccant body has the form of a tape, which is attached to the second metallic side part 2.2 by an adhesive 14.
  • the desiccant body 10 does not extend in the transverse direction over the entire width u of the spacer. This prevents heat transfer through the desiccant body from the first pane to the second pane in the finished insulating glass unit.
  • a cover film 5 is attached, which extends from the first metallic side part 2.1 to the second metallic side part 2.2.
  • the intermediate space 11 is thus closed off by the cover film 5 and the drying agent 10 contained therein is covered.
  • the cover film is permeable to water vapor and in the example is a 0.1 mm thin, stretchable and flexible polypropylene film.
  • the cover film is glued to the metal side parts 2.1 and 2.2 and is arranged such that it encompasses the metal side parts in the upper region. This means that it is additionally clamped between the pane and the spacer in the finished double glazing.
  • FIG. 2 shows a cross section of the edge region of an insulating glass unit II according to the invention with the spacer I shown in FIG. 1.
  • the first pane 21 is connected to the side wall 7 of the first metallic side part 2.1 via a primary sealant 24, and the second pane 22 is connected via the primary Sealant 24 attached to the side wall 7 of the second metallic side part 2.2.
  • the primary sealant 24 is a cross-linking polyisobutylene.
  • the inner space between the panes 26 is located between the first pane 21 and the second pane 22 and is delimited by the cover film 5 of the spacer I according to the invention.
  • the intermediate space 11 is connected to the inner sliding intermediate space 26 via the water-vapor-permeable cover film 5, so that the drying agent 10 absorbs the atmospheric moisture from the inner pane intermediate space 26.
  • the first disc 21 and the second disc 22 protrude beyond the side walls 7 of the spacer I, so that an outer disc space 27 is formed, which is located between the first disc 21 and the second disc 22 and is essentially delimited by the polymeric connector 3 of the spacer.
  • the edge of the first disc 21 and the edge of the second disc 22 are arranged at one level.
  • the outer space between the panes 25 is only partially covered with a secondary sealant 25.
  • a central area 28 of the polymeric connector 3 is free of secondary sealant 25.
  • the secondary sealant is arranged only in the outer areas that are adjacent to the first disk 21 and second disk 22 are. In this way, there is no continuous heat-conducting connection between the disks 21 and 22 through the secondary sealant.
  • the free middle area consists of 0.3 mm thick PET, which is insensitive to external influences and mechanical loads. Therefore, this embodiment is very stable despite the secondary sealant not being applied throughout.
  • the secondary sealant 25 is, for example, a silicone. Silicones absorb the forces acting on the edge bond particularly well and thus contribute to the high stability of the insulating glass unit II.
  • the first pane 21 and the second pane 22 consist of soda-lime glass with a thickness of 3 mm.
  • FIG. 3 shows a cross section through an edge region of an insulating glass unit II according to the invention with a spacer I according to the invention with a receiving profile 30.
  • the spacer I is essentially produced in the same way as that shown in FIG.
  • the additional receiving profile 30 has a receiving groove 35 which receives the middle disk 23.
  • the middle pane 23 divides the inner pane gap 26 into two inner pane spaces.
  • the receiving groove 35 contains an insert 36 made of a butyl, which stabilizes the central disk 23 in the receiving groove and prevents the disk 23 from rattling in the receiving groove.
  • the insert 36 is designed such that the two inner spaces between the panes are connected to one another, so that gas exchange can take place between them.
  • the receiving profile 35 like the metallic side parts 2.1 and 2.2, is made of aluminum by extrusion.
  • the receiving profile 35 has a first inner mounting groove 31 and a second inner mounting groove 32.
  • the polymeric connector is divided into a first polymeric connector 33 and a second polymeric connector 34.
  • the first polymeric connector is in the mounting groove 6 of the first metallic side part 2.1 and the first inner mounting groove 31 is attached and is fixed by the first inner fixing projection 41.
  • the second polymeric connecting piece 34 is arranged in the mounting groove 6 of the second metallic side part 2.2 and the second inner mounting groove 32 and is fastened there by the second inner fixing projection 42.
  • the receiving profile 35 also has two support projections 43 and 44, each of which is used to attach a cover film.
  • the first cover film 37 is open glued to the first support projection 43 and is arranged such that it protrudes into the receiving groove 36. This ensures a particularly stable attachment.
  • the first cover film 37 is also attached by gluing to the first metallic side part 2.1.
  • the second cover film 38 is fastened to the second support projection 44 and the second metallic side part 2.2 analogously to the first cover film 37.
  • the receiving profile 35 divides the intermediate space into a first intermediate space 39 and a second intermediate space 40.
  • a desiccant body is arranged in each intermediate space, which body is fastened to the receiving profile.
  • the arrangement of desiccant in both spaces 39 and 40 maximizes the absorption capacity for moisture from the inner space between the panes. It is also possible to use desiccant only in one space, since gas exchange between the two spaces is possible.
  • the secondary sealant 25 is arranged in the outer space between the panes so that two central areas remain free. The edge areas where the outer panes adjoin the spacer are provided with the secondary sealant, which is important for the stability of the edge bond.
  • a secondary sealing means 25 is also arranged in the area of the receiving profile 35, which improves the sealing in this area and additionally ensures an improvement in the stability of the edge bond.
  • FIG. 4 shows a spacer I according to the invention with an incision 45.
  • the spacer I In the region of the incision 45, the spacer I can be bent over, so that there is a corner of a spacer frame, as shown in FIG. 5.
  • the incision 45 has a V-shaped cross section and extends in the transverse direction (Y direction) of the spacer. This means that the spacer is cut across its entire width.
  • the open side of the V is on the upper side (Z direction) of the spacer and the tip of the V lies just above that of the base of the polymeric connector 3.
  • the two sides of the V 46 and 47 close an angle of approximately 90 ° so that after the spacer is bent, a spacer frame with a right-angled corner is obtained at the incision point, as shown in FIG.
  • the fixing projections 9 of the first and second metallic side parts are not cut, so that after bending they have an additional stabilizing effect on the spacer frame.
  • FIG. 6 shows a possible embodiment of a method for producing a spacer.
  • the first metallic side part 2.1 and that second metallic side part 2.2 provided by roll molding.
  • a 0.1 mm thick galvanized steel sheet is bent in such a way that the fixing projection 9 has already been bent over and forms an angle ⁇ (beta) of 90 ° with the side wall 7.
  • the holding arm 8 forms an angle a (alpha) of approximately 10 ° to 20 ° with the side wall 7, that is to say the position of the mounting groove 6 is already predetermined.
  • the angle a (apha) can also be chosen larger or smaller depending on the subsequent process steps.
  • the mounting groove 6 extends along the entire side wall 7.
  • This shape is particularly easy to produce by roll forming, since there is only one kink at the transition between the holding arm and the side wall, in contrast to the example shown in FIG. 1, in which the mounting groove is only extends along part of the side wall.
  • the stability of the spacer is increased by the large mounting groove, which is particularly advantageous for the thin steel sheet.
  • step c) The opening between the holding arm 8 and the fixing projection 9 is so large that the polymeric connector 3 can be inserted there in step c).
  • step a1) a butyl cord 13 is inserted into the mounting groove 6 at the point at which the side wall 7 of a metallic side part is adjacent to the holding arm 8.
  • step b) the polymeric connector 3 is provided.
  • This is a 0.3 mm thick piece of PET with a moisture-proof barrier coating 4 on the side facing the intermediate space in the installed position in the form of a 200 nm thick aluminum layer.
  • a 30 nm thick silicon dioxide layer is arranged as an adhesion promoter 15 on the side of the PET piece facing away from the intermediate space in the installed position.
  • the PET piece After heating, the PET piece is bent into a U-shape at the kinks.
  • This PET piece is inserted in step c) through the openings between the holding arm 8 and the fixing projection 9 into the two metal side parts 2.1 and 2.2.
  • the two holding arms 8 are then pressed in the direction of the side walls 7 of the side parts 2.1 and 2.2, so that the U-shaped polymeric connecting piece 3 is fixed in the mounting grooves 6.
  • the U-shaped polymeric base body 1 is thus finished.
  • desiccants can be introduced into the space and then the cover film can be attached.

Landscapes

  • 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)

Abstract

Écarteur (I) pour unités vitrées isolantes, comprenant au moins - un corps de base (1) en forme de U s'étendant dans le sens longitudinal (X), renfermant une première partie latérale métallique (2.1), une deuxième partie latérale métallique (2.2) disposée parallèlement à la première, un élément de liaison polymère (3) s'étendant dans le sens transversal (Y), reliant les deux parties latérales métalliques (2.1, 2.2) et formant la délimitation inférieure du corps de base (1), et un interstice (11) disposé au-dessus de l'élément de liaison polymère (3) entre les parties latérales métalliques (2.1, 2.2), - les première et deuxième parties latérales métalliques (2.1, 2.2) renfermant respectivement au moins une paroi latérale (7) pour la liaison avec une vitre et un bras de retenue (8) saillant dans l'interstice (11) et formant avec la paroi latérale (7) une rainure de montage (6) sensiblement parallèle à la paroi latérale (7), - l'élément de liaison polymère (3) étant exécuté en forme de U et ses deux épaulements (3a, 3b) étant insérés dans les rainures de montage (6) des deux parties latérales métalliques (2.1, 2.2).
EP19765243.1A 2018-09-13 2019-09-06 Écarteur comprenant des parties latérales métalliques Withdrawn EP3850180A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18194244 2018-09-13
PCT/EP2019/073798 WO2020053082A1 (fr) 2018-09-13 2019-09-06 Écarteur comprenant des parties latérales métalliques

Publications (1)

Publication Number Publication Date
EP3850180A1 true EP3850180A1 (fr) 2021-07-21

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EP19765243.1A Withdrawn EP3850180A1 (fr) 2018-09-13 2019-09-06 Écarteur comprenant des parties latérales métalliques

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US (1) US20220034152A1 (fr)
EP (1) EP3850180A1 (fr)
JP (1) JP2022503703A (fr)
KR (1) KR20210039463A (fr)
CN (1) CN112654762A (fr)
DE (1) DE202019005680U1 (fr)
WO (1) WO2020053082A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019141484A1 (fr) * 2018-01-16 2019-07-25 Saint-Gobain Glass France Vitrage isolant et son procédé de fabrication
US20240110434A1 (en) 2021-05-25 2024-04-04 Saint-Gobain Glass France Spacer for insulating glazings

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681555A5 (fr) * 1990-08-10 1993-04-15 Geilinger Ag
US5514432A (en) * 1993-07-14 1996-05-07 Lisec; Peter Hollow profile for spacer frames for insulating glass panes
US5630306A (en) * 1996-01-22 1997-05-20 Bay Mills Limited Insulating spacer for creating a thermally insulating bridge
UA81001C2 (en) * 2002-12-05 2007-11-26 Visionwall Corp Heat-insulation window
PL2463472T3 (pl) * 2010-12-08 2016-01-29 Vkr Holding As Przekładka szyby
EP3023569B1 (fr) 2011-04-13 2018-06-06 ALU-PRO srl Ecarteur pour ecarter les verres d'une fenetre multi-vitrage
DE202012013345U1 (de) * 2012-01-13 2016-06-17 Saint-Gobain Glass France Abstandshalter für Isolierverglasungen
US20140113098A1 (en) * 2012-10-22 2014-04-24 Guartdian IGU, LLC Spacer having a desiccant
CA2958613C (fr) 2014-09-25 2019-05-07 Saint-Gobain Glass France Entretoise pour vitrages isolants
CN205422390U (zh) * 2015-10-19 2016-08-03 罗尔泰克股份公司 一种型材以及包括该型材的窗

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CN112654762A (zh) 2021-04-13
WO2020053082A1 (fr) 2020-03-19
KR20210039463A (ko) 2021-04-09
US20220034152A1 (en) 2022-02-03
DE202019005680U1 (de) 2021-06-17

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