EP3938609A1 - Vitrage isolant pourvu d'un positionnement amélioré de l'élément intercalaire ainsi que procédé pour sa fabrication - Google Patents

Vitrage isolant pourvu d'un positionnement amélioré de l'élément intercalaire ainsi que procédé pour sa fabrication

Info

Publication number
EP3938609A1
EP3938609A1 EP20708097.9A EP20708097A EP3938609A1 EP 3938609 A1 EP3938609 A1 EP 3938609A1 EP 20708097 A EP20708097 A EP 20708097A EP 3938609 A1 EP3938609 A1 EP 3938609A1
Authority
EP
European Patent Office
Prior art keywords
pane
spacer
spacers
glazing
frame
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Withdrawn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
EP20708097.9A
Other languages
German (de)
English (en)
Inventor
Ariane WEISSLER
Dirk NÜSSER
Hans-Werner Kuster
Walter Schreiber
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 EP3938609A1 publication Critical patent/EP3938609A1/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Withdrawn legal-status Critical Current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
    • E06B3/66366—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
    • E06B3/6617—Units comprising two or more parallel glass or like panes permanently secured together one of the panes being larger than another
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67304—Preparing rigid spacer members before assembly
    • E06B3/67308—Making spacer frames, e.g. by bending or assembling straight sections
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67304—Preparing rigid spacer members before assembly
    • E06B3/67317—Filling of hollow spacer elements with absorbants; Closing off the spacers thereafter
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67304—Preparing rigid spacer members before assembly
    • E06B3/67321—Covering spacer elements, e.g. with sealants
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • E06B3/67326—Assembling spacer elements with the panes

Definitions

  • Insulating glazing with improved positioning of the spacer and methods for their production
  • the present invention relates to insulating glazing with improved positioning of the circumferential spacer, a method for its production and its use.
  • thermal conductivity of glass is around a factor of 2 to 3 lower than that of concrete or similar building materials.
  • panes are in most cases made much thinner than comparable elements made of stone or concrete, buildings often lose most of the heat through the external glazing. This effect is particularly evident in high-rise buildings with partial or complete glass facades.
  • the necessary additional costs for heating and air conditioning make up a part of the maintenance costs of a building that should not be underestimated.
  • lower carbon dioxide emissions are required in the course of stricter building regulations.
  • An important solution for this is insulating glazing, which is an indispensable part of building construction, especially in the wake of ever faster increases in raw material prices and stricter environmental protection regulations.
  • Double glazing the simplest design of insulating glazing, comprises two panes that are spaced apart from one another by circumferential spacers (also referred to as spacers).
  • Triple insulating glazing usually contains three panes, which are either separated from one another by two individual spacers or attached to a double spacer.
  • the middle pane of the triple glazing is fixed on a double spacer, for example in a groove between the two outer panes.
  • a spacer is disclosed in WO 2014/198431 A1, for example.
  • the purpose of the frame which is formed from individual spacer profiles, is to hold the panes together mechanically and to seal the spaces between the panes in a gastight and watertight manner.
  • WO 2013/104507 A1 discloses a spacer with a polymer base body, on the outer surface of which a gas- and vapor-tight barrier in the form of a film is applied.
  • This Barrier film contains at least two metallic layers and / or ceramic layers that are arranged alternately with at least one polymer layer.
  • the spacer frame of an insulating glazing is usually made of several spacer profiles that are connected to one another.
  • the spacer profiles are connected in the corners of the insulating glazing via corner connectors that are inserted into a cavity in the spacer.
  • the spacers can also be bent at the corners of the glazing. It is also possible to provide the spacers in the corner areas with a fermentation cut and to butt them together at a 45 ° angle.
  • the spacers cut for fermentation can be connected to one another, for example, by ultrasonic welding or by means of a sealant.
  • Corner connectors represent an additional component which the insulating glazing manufacturer usually purchases and which has to be inserted into the cross-section of the spacer in a separate process step. Bending the spacers in the corner area is difficult in the case of the polymer spacers which are preferably used because of their thermal properties. A fermentation cut of the spacers, in turn, allows only very small manufacturing tolerances in the cut. This problem occurs both with spacers for double glazing and with double spacers for triple glazing.
  • both the dimensions of the inner pane and the length of the spacers and the depth of the groove in the spacers have large tolerance ranges due to production.
  • the length of the spacers there are tolerances in the cut, while tolerances in the depth of the groove arise primarily from manufacturing tolerances of an insert molded onto the groove by means of coextrusion.
  • the dimensions of the prefabricated spacer arrangement cannot be precisely matched to the dimensions of the inner pane.
  • the inner pane inserted into the frame has play in the spacer frame.
  • the invention is therefore based on the object of reducing the above-mentioned disadvantages from the prior art and of providing insulating glazing which has improved mechanical properties so that, despite manufacturing tolerances, there is no noise from the inner pane in the spacer frame.
  • the insulating glazing according to the invention comprises at least a first pane, a second pane and a circumferential spacer frame which separates the two panes from one another.
  • the spacer frame is a circumferential frame which is formed from several spacer profiles.
  • the spacers each have a first pane contact surface, a second pane contact surface running parallel thereto, a glazing interior surface and an outer surface.
  • the interior surface of the glazing and the exterior surface likewise run essentially parallel to one another.
  • the spacers are preferably in the form of individual sections, the length of which is adapted to the size of the insulating glazing. At the ends of the spacers there are end surfaces which are perpendicular to the direction of extent of the pane contact surfaces and which show the profile cross section of the spacer.
  • each spacer of the frame has two ends, one end with a first end surface and one end with a second end surface.
  • the spacers are arranged in the insulating glazing in such a way that each spacer in the insulating glazing has one degree of freedom.
  • the first end face of each spacer is positioned in such a way that it points in the direction of the outer space between the panes of the insulating glazing, while the second end face of each spacer a section of the glazing interior surface of an adjacent spacer contacted. The second end faces are therefore through the
  • Glazing interior surfaces of the spacer positioned on the immediately adjacent edge of the frame are limited and preferably also completely covered.
  • the insulating glazing according to the invention has an advantageous compensation for the manufacturing tolerances of the spacers, since a degree of freedom is created for each spacer of the frame. Whether the spacer on the first end face protrudes beyond the outer surface of the frame within the scope of the usual manufacturing tolerances plays no role whatsoever with regard to the quality and tightness of the insulating glazing. In contrast to this, without this degree of freedom of each spacer, for example in the case of a spacer frame with corners sawn for fermentation, complications with regard to tightness occur. If the spacer is too long, the frame will be bent open, while if the spacer profile is too short, a gap will arise. This problem can be completely avoided by means of the arrangement according to the invention, as a result of which the quality of the insulating glazing is significantly improved.
  • the end faces preferably form an angle of 90 ° to the interior surface of the glazing and to the external surface. This results in a further advantage of the present invention that the end faces of the spacers are not cut to size by 45 °, which could lead to an additional error in the dimensions of the frame.
  • the first end faces are also arranged on the outside of the frame and are therefore still accessible after the frame has been assembled.
  • the second end surfaces are essentially completely closed by a section of the glazing interior surfaces of an adjacent spacer. After the frame has been preassembled, all that remains is an air-permeable gap that can be sealed with a sealing compound, for example. Closing the second end surfaces by adjacent spacers is advantageous with regard to a subsequent filling of the frame with desiccant. This cannot emerge at the second end face, for example when backfilling via the first end face.
  • corner brackets or other plug-in elements for fixing the spacers to one another can be completely dispensed with at the corners of the frame.
  • the insulating glazing and the spacer frame of the insulating glazing are essentially rectangular.
  • the term “essentially rectangular” is intended to mean “rectangular” or denote a shape which deviates from an ideal rectangular shape only to the extent of the usual manufacturing tolerances.
  • Usual manufacturing tolerances for the inner panes used to manufacture the insulating glazing base body according to the invention and the spacers are in the range of up to 0.5 mm.
  • the insulating glazing and the frame preferably have a square basic shape.
  • the circumferential frame of spacers comprises a first spacer, a second spacer, a third spacer and a fourth spacer, each spacer running essentially parallel to one edge of the insulating glazing.
  • the first end faces of the respective first, second, third and fourth spacers point in the direction of the outer space between the panes.
  • the second end face of the first spacer rests against the glazing interior face of the fourth spacer, the second end face of the second spacer rests against the glazing interior face of the first spacer, the second end face of the third spacer rests against the glazing interior face of the second spacer and the second end face of the fourth Spacer rests against the glazing interior surface of the third spacer.
  • the second end surfaces each rest in the region of the glazing interior surface which is adjacent to the first end surface of the respective spacer. A certain overhang is in the sense of the invention, since manufacturing tolerances are compensated in this way.
  • the spacers each have at least one hollow chamber that extends between the first disk contact surface and the second disk contact surface.
  • the spacer accommodates more than two panes and the insulating glazing according to the invention is thus designed as triple or multiple glazing, at least two hollow chambers are present.
  • at least one hollow chamber is assigned to each space between the panes of two adjacent panes.
  • the at least one hollow chamber of the spacer extends as a continuous hollow space within the spacer profile.
  • An open cross section of the at least one hollow chamber is thus present at the end faces of the spacer. This cross section is like this designed so that it can be closed, for example by inserting an object into the cavity.
  • the open cross-section of the spacers is preferably closed at least at the first end face, for example by a plug, a sealant introduced into the cavity or a foam inserted therein and / or an adhesive tape applied to the open cross-section.
  • This has the advantage that any desiccant located in the hollow chamber cannot escape via the first end face.
  • the second end face can be closed in the same way. However, this is not absolutely necessary, since the second end face is already closed by the glazing interior surface of an adjacent spacer.
  • the at least one hollow chamber of the spacer is preferably filled with desiccant. It is not necessary for each spacer to be filled with desiccant at each glazing edge. The proportion of spacers that have to be filled with desiccant depends on the pane volume. Silica gels, molecular sieves, CaCh, Na 2 S0 4 , activated carbon, silicates, bentonites, zeolites and / or mixtures thereof are preferably used as drying agents.
  • the glazing interior surfaces preferably have openings.
  • the total number of openings depends on the size of the double glazing.
  • the openings connect the hollow chambers with the inner space between the panes, which enables gas exchange between them. This allows air humidity to be absorbed by the desiccant located in the hollow chamber and prevents the windows from fogging up.
  • the openings are preferably designed as slots, particularly preferably as slots with a width of 0.2 mm and a length of 2 mm. The slots ensure an optimal exchange of air without desiccant penetrating from the hollow chamber into the interior of the glazing.
  • the insulating glazing comprises further panes extending beyond the first pane and the second pane, which are arranged essentially parallel to the first pane and the second pane and which are connected to the first pane or the second pane via a further frame Spacers are connected.
  • the spacers of the insulating glazing according to the invention can comprise a wide variety of materials known to those skilled in the art, for example metals such as aluminum, rigid polymers or flexible polymers such as thermoplastic elastomers.
  • the solution according to the invention for compensating for manufacturing tolerances can be used with any type of spacer that has to be cut to a defined length in the manufacturing process.
  • Spacers with a rigid polymeric base body are preferably used, since these have a reduced thermal conductivity compared to metals and thus reduce the heat transfer.
  • the polymeric base preferably contains polyethylene (PE), polycarbonate (PC), polypropylene (PP), polystyrene, polybutadiene, polynitrile, polyester, polyurethane, polymethyl methacrylate, polyacrylate, polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile butadiene -Styrene (ABS), acrylic ester-styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene / polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, PBT / PC and / or copolymers or mixtures thereof. Particularly good results are achieved with these materials.
  • the polymer base body is preferably reinforced with glass fibers.
  • the base body preferably has a glass fiber content of 20% to 50%, particularly preferably 30% to 40%. The glass fiber content in the polymer base body improves strength and stability at the same time.
  • the polymeric base body is filled with hollow glass spheres or glass bubbles.
  • These hollow glass spheres have a diameter of 10 ⁇ m to 20 ⁇ m and improve the stability of the polymeric hollow profile. Suitable glass spheres are commercially available under the name “3M TM Glass Bubbles”.
  • the polymer base body particularly preferably contains polymers, glass fibers and glass spheres. An admixture of glass spheres leads to an improvement in the thermal properties of the hollow profile.
  • Such spacers with a polymer base body have a worsened seal against the passage of gases compared to metallic base bodies.
  • a gas- and vapor-tight coating or an insulation film acting as a gas- and vapor-tight barrier is attached at least to the outer surface of the polymeric base body of the spacer.
  • a gas- and vapor-tight insulation film is preferably applied at least on the outer surface of the polymeric base body, preferably on the outer surface and on some of the pane contact surfaces.
  • the insulation film improves the tightness of the spacer against gas loss and the ingress of moisture.
  • the insulation film is preferably applied to about half to two thirds of the pane contact surfaces.
  • a suitable spacer with a polymer base body is disclosed in WO 2013/104507 A1, for example.
  • This insulation film contains at least one polymer layer and a metallic layer or a ceramic layer.
  • the layer thickness of the polymer layer is between 5 ⁇ m and 80 ⁇ m, while metallic layers and / or ceramic layers with a thickness of 10 nm to 200 nm are used. A particularly good tightness of the insulation film is achieved within the specified layer thicknesses.
  • the insulating film can be applied, for example glued, to the polymeric base body. Alternatively, the film can be coextruded together with the base body.
  • the insulation film particularly preferably contains at least two metallic layers and / or ceramic layers which are arranged alternating with at least one polymer layer.
  • the layer thicknesses of the individual layers are preferably as described in the previous paragraph.
  • the outer layers are preferably formed by polymer layers.
  • the metallic layers are particularly well protected from damage.
  • the alternating layers of the insulation film can be connected or applied to one another using a wide variety of methods known from the prior art. Methods for depositing metallic or ceramic layers are well known to the person skilled in the art.
  • the use of an insulation film with an alternating sequence of layers is particularly advantageous with regard to the tightness of the system. A fault in one of the layers does not lead to a loss of function of the insulation film. In comparison, even a small defect in a single layer can lead to complete failure.
  • the polymeric layer of the film preferably comprises polyethylene terephthalate, ethylene vinyl alcohol, polyvinylidene chloride, polyamides, polyethylene, polypropylene, silicones, acrylonitriles, polyacrylates, polymethyl acrylates and / or copolymers or mixtures thereof.
  • the metallic layer preferably contains iron, aluminum, silver, copper, gold, chromium and / or alloys or oxides thereof.
  • the ceramic layer of the film preferably contains silicon oxides and / or silicon nitrides.
  • the metallic or ceramic layers are preferably applied to the polymer layer via a PVD process (physical vapor deposition).
  • the polymeric layer can be provided, for example, in film form, coated using the methods mentioned and then connected to the base body.
  • the coating with the materials mentioned provides particularly good results with regard to impermeability and also shows excellent adhesion properties to the materials used in insulating glazing for the outer seal.
  • the outer surface of the frame made of spacers preferably comprises such an insulating film. Since the outer surface of the circumferential spacer frame is composed to a large extent of the outer surfaces of the spacers, a large part of the outer surface of the frame is already covered when a polymeric base body with insulation film is used. This is preferably the case, since in this way no additional sealing by means of an insulating film is necessary along the edges.
  • the remaining portion of the outer surface of the frame is formed by the first end surfaces of the spacers. These are also closed in a gas-tight manner, for example by means of a sealant introduced into the open cross section of the spacer.
  • the sealing means commonly used for gluing the panes to the pane contact surfaces are preferably used.
  • an insulating film of the composition already described is also applied to the first end faces, which seals the first end faces in a gas- and water-tight manner. The extent to which such an insulating film is required on the first end faces also depends on whether and in what manner the open cross-section of the spacer at the end face was closed with regard to gas tightness in order to prevent the desiccant from falling out.
  • the outer surfaces in the corner areas of the frame are preferably closed over a large area with the insulating film. It has proven to be advantageous to use this procedure regardless of whether the open Cross-sections at the first end areas have already been closed with a gas-tight stopper or a sealant.
  • the insulation film covers at least the region of the first end face, a region of the adjoining outer surface of the adjacent spacer and a partial region of the pane contact surfaces.
  • the insulation film preferably protrudes onto the pane contact surfaces to the same extent as an insulation film already provided with the spacer profile. In this way, the gaps located between the second end surfaces and the adjacent glazing interior surface of the adjacent spacer are also closed in a gas-tight manner.
  • the spacers can be provided without an insulating film and, after the frame has been folded, an insulating film is attached along the entire outer surface of the frame.
  • an insulating film is attached along the entire outer surface of the frame.
  • the basic structure of the insulation film used to seal the corner areas and / or the entire outer surface of the frame corresponds to the structure of the insulation films provided on the polymeric base body.
  • the subsequently applied insulation film preferably comprises a self-adhesive adhesive layer, in particular an adhesive layer, on the film surface that is applied to the frame.
  • the adhesive layer preferably comprises a polyurethane and / or polyacrylate adhesive. A particularly reliable adhesion can thus be achieved.
  • the insulation film glued on in the corner areas also has the advantage of mechanically fixing the spacer profiles to one another.
  • the insulation film with the adhesive layer therefore simultaneously acts as an adhesive tape that connects the adjacent spacers to form a profile frame. This increases the mechanical stability of the frame. Whether this is used as the sole or just an additional measure for fixing the frame depends on further factors at the discretion of the person skilled in the art. These factors include, for example, the frame size of the double glazing and any fixation of the frame to other components, such as the middle panes of triple or multiple glazing.
  • the spacers can be connected to one another by means of further measures before an insulation film is glued on in the corner areas.
  • the spacers can be glued, welded or ultrasonically welded.
  • a self-adhesive insulating film it is also possible, for example, to use a commercially available adhesive tape.
  • the adhesive tape is applied at least to the corner areas of the frame, i.e. in such a way that a coherent piece of adhesive tape spans a corner at which two spacers contact and covers an area of the outer surfaces of both spacers facing away from the interior surface of the glazing, which is adjacent to the corner to be fixed .
  • the insulating glazing is triple glazing with a central pane inserted into a groove in the spacer, a frame pre-assembled around the central pane can be stabilized, which significantly improves the stability and manual and automated handling of this arrangement. It is also possible to cover the entire outer surface of the frame with an adhesive tape in order to stabilize the frame. It is only essential that, as described above, the adhesive tape is applied at least to the corner areas of the frame.
  • the mechanical advantages mentioned apply both to embodiments with a self-adhesive insulation film and with commercially available adhesive tape. The only difference is that in the case of a commercially available adhesive tape, further sealing measures must be taken, for example an insulation film already present on the outer surfaces of the spacers before the frame is installed in conjunction with a further sealant in the corner areas.
  • the outer surface of the spacer is connected to the two disc contact surfaces via connection surfaces, ie via a connection surface with one disc contact surface and / or via another connection surface with the other disc contact surface, whereby preferably both disc contact surfaces are connected to the outer surface via such connection surfaces.
  • the connection surface can be at an angle in the range from 30 ° to 60 ° to the outer surface.
  • the two pane contact surfaces are generally approximately perpendicular or perpendicular to the plane in which the outer surface is located and / or to the plane in which the glazing interior surface is located.
  • the outer surface and the interior surface of the glazing run parallel to one another.
  • the glazing interior surface is usually directly connected to the two pane contact surfaces.
  • the glazing interior surface can, however, optionally also be connected to the pane contact surfaces via connection surfaces.
  • the dimensions of the spacers depend on the dimensions of the insulating glazing.
  • the width of such a spacer can be, for example, in the range from 10 to 50 mm, preferably 20 to 36 mm.
  • the height can be in the range from 5 to 15 mm, preferably 5 to 10 mm, for example.
  • the first and second panes represent the outer panes of the insulating glazing and are attached to the pane contact surfaces preferably via a sealant which is applied between the first pane contact surface and the first pane and / or the second pane contact surface and the second pane.
  • the sealant preferably contains butyl rubber, polyisobutylene, polyethylene vinyl alcohol, ethylene vinyl acetate, polyolefin rubber, copolymers and / or mixtures thereof.
  • the sealant is preferably introduced into the gap between spacer and panes with a thickness of 0.1 mm to 0.8 mm, particularly preferably 0.2 mm to 0.4 mm.
  • the outer space between the panes of the insulating glazing is preferably lapsed with an outer seal.
  • the outer space between the panes is formed by the first pane, the second pane, the spacer and the sealant placed between the panes and pane contact surfaces and is located opposite the glazing interior in the outer edge area of the insulating glazing.
  • the outer space between the panes is open on the side opposite the spacer.
  • the outer surface of the spacer faces the outer space between the panes.
  • the outer seal primarily serves to bond the two panes and thus the mechanical stability of the insulating glazing.
  • the outer seal preferably contains polysulfides, silicones, silicone rubber, polyurethanes, polyacrylates, copolymers and / or mixtures thereof. Such substances adhere very well to glass, so that the outer seal ensures that the panes are securely bonded.
  • the thickness of the outer seal is preferably 2 mm to 30 mm, particularly preferably 5 mm to 10 mm.
  • the panes of the insulating glazing can be made of organic glass or, preferably, of inorganic glass.
  • the panes can be made of flat glass, float glass, soda-lime glass, quartz glass or borosilicate glass, independently of one another.
  • the thickness of each disk can vary and thus be adapted to the requirements of the individual case. Discs with standard thicknesses of 1 mm to 19 mm and preferably of 2 mm to 8 mm are preferably used.
  • the Slices can be colorless or colored.
  • the stated compositions of the panes relate to the first and second panes and, if present, also the third and further panes.
  • the disks located in the grooves can be made with a small thickness, for example 2 mm.
  • the interior of the glazing can be filled with air or another gas, in particular a noble gas such as e.g. Argon or krypton.
  • Noble gases advantageously reduce the heat transfer value in the space between the insulating glazing.
  • the spacer frame is generally designed in the form of a rectangle in plan view. Usually the spacer frame is symmetrical, i. it has the same distance to the edge of the insulating glass on all sides of the insulating glass.
  • the insulating glazing is a triple or multiple glazing which comprises at least three panes.
  • the third and any further disks are attached in one or more grooves in the spacer.
  • the spacer comprises a first pane contact surface and a second pane contact surface running parallel to it, an outer surface and a glazing interior surface which is divided by the groove into a first glazing interior surface and a second glazing interior surface.
  • the groove runs parallel to the first disk contact surface and the second disk contact surface and is used to hold a disk.
  • the spacer preferably comprises at least two hollow chambers.
  • the first hollow chamber adjoins the first glazing interior surface, while the second hollow chamber adjoins the second glazing interior surface, the glazing interior surfaces being above the hollow chambers and the outer surface being below the hollow chambers.
  • above is defined as facing the pane interior of the insulating glazing and below as facing away from the pane interior.
  • the side flanks of the groove are preferably formed by the walls of the first hollow chamber and the second hollow chamber.
  • the groove forms a recess that is suitable for receiving the middle pane (third pane) of the insulating glazing.
  • the insulating glazing preferably comprises three panes which are held at a distance from one another by a spacer.
  • the insulating glazing can also comprise a fourth or additional pane. These can for example be inserted into the spacer via a further groove. Alternatively, additional panes can also be attached to the first pane or second pane via a further spacer.
  • the insulating glazing preferably comprises three or four panes.
  • the embodiment of the insulating glazing according to the invention as triple or multiple glazing comprising a spacer with a groove is particularly preferred with regard to the simple assembly of the spacer frame.
  • the frame made of spacers is formed in that the spacers in the arrangement of the end faces according to the invention are plugged onto the circumferential edge of the third pane.
  • the third pane represents the middle pane of the insulating glazing.
  • the resulting frame with a middle pane has particularly good mechanical stability and is particularly easy to further process with regard to its handling.
  • the third disc (inner disc) is preferably inserted in the grooves of the spacers in a circle - the third disc is inserted into the groove of a first spacer so that one end of the spacer over the edge of the inner disc, with which the inner disc into the spacer is used, survives.
  • the next spacer can be placed on the edge of the inner pane on which the first spacer protrudes and can be pushed up to the spacer so that the second end surface of the second spacer rests against the glazing interior surface of the first spacer. Tolerances of the second spacer and the associated edge of the inner pane can be compensated for, since the spacer has a degree of freedom along the inserted edge when the inner pane is inserted, which can be used to compensate for manufacturing tolerances.
  • the second spacer is in turn placed in such a way that the end of the second spacer which does not lie against the first spacer protrudes over the edge of the inner pane.
  • the third spacer can be placed in such a way that its second end surface comes into contact with the interior surface of the second spacer and when the inner pane is inserted into the third spacer again Degree of freedom to compensate for manufacturing tolerances is available.
  • the fourth spacer is placed with its groove on the inner pane in an analogous manner.
  • the first end surfaces of the spacers face the outer seal and can have a protrusion over the surface of the circumferential frame in order to enable the compensation of manufacturing tolerances according to the invention.
  • the four spacers form a frame around the third pane, which is designed in such a way that precisely the first end face of each spacer is arranged on the outside of the frame and the second end face of each spacer comes into contact with the interior surface of the glazing of the adjacent spacer.
  • the third disk is glued into the grooves of the spacers.
  • the third disk can be glued into the groove of a spacer or into the grooves of several or all of the spacers. This increases the mechanical stability of the insulating glazing base body and simplifies its handling in the manufacturing process. In order to be able to adjust the position of the spacers on the edges of the third pane accordingly, they are only loosely attached to the edges in a first step and only pressed against the relevant edge after the spacer has been aligned and thus fixed with the adhesive.
  • Loosely connected in this context means that there is still no fixed, largely irreversible, connection between the spacer and the edge of the third pane, but the spacer is not pushed onto the third pane in the full depth of the groove. In this position, the spacer can still be moved along the edge of the third pane and is only fixed by pressing it after the spacer has been aligned, with an adhesive located on the pane edge of the third pane or on the bottom surface of the groove connecting the pane edge to the groove.
  • Adhesives are to be understood as meaning, for example, adhesives or adhesive tapes.
  • a liquid or viscous adhesive for example a butyl acrylate adhesive, can be used for gluing in.
  • a double-sided foam adhesive tape is preferably used here.
  • a double-sided foam adhesive tape can dampen vibrations in the inner pane and help improve the mechanical and acoustic properties of the insulating glazing.
  • the double-sided foam adhesive tape preferably has a layer of polyethylene foam (PE foam), which is provided on both sides with an adhesive layer, for example based on pure acrylate.
  • the thickness of the PE foam layer is preferably 0.5 mm.
  • the adhesive layers preferably have an application weight of 70 g / m 2 .
  • the groove comprises an insert which prevents the pane from slipping and the resulting development of noise when opening and closing the window.
  • the insert also compensates for the thermal expansion of the third pane when it is heated, so that tension-free fixation is ensured regardless of the climatic conditions.
  • the insert can be coextruded with a polymeric base body of the spacer.
  • a suitable material for the insert is, for example, ethylene-propylene-diene rubber.
  • the edges of the third pane are covered with a non-transparent covering means before inserting it into the grooves of the spacers, or to insert a covering means into the grooves before inserting the third pane into the grooves of the spacers.
  • the inner panes used for the production of the double glazing are usually not sanded at the edges, but only cut. This can lead to reflections at the cut edges when the incidence of light is inclined, which causes an undesirable optical effect. This effect can be suppressed if the edges are provided with a non-transparent, in particular dark or black, covering agent.
  • the insert described can be used as a covering means.
  • commercially available black adhesive tape for example PVC adhesive tape or fabric tape, for example made of PET fleece, can be used as the covering means.
  • an adhesive tape is used for gluing the third pane in the grooves, which both the mechanical fixing of the Inner pane in the groove as well as the optical cover ensures.
  • an opaque double-sided adhesive tape in particular a double-sided foam adhesive tape of the type described above with an opaque surface on the side of the pane, is preferably used. This serves as a covering means and fixing in equal measure and, in addition to securing the inner pane in the groove, suppresses the undesired optical effects.
  • an adhesive tape can be provided on the outer surfaces of the spacers, which covers at least the corner areas of a spacer frame built around the third pane.
  • the first glazing interior and the second glazing interior are preferably connected to one another in such a way that pressure equalization between the glazing interiors is possible. This is possible, for example, by dispensing with an insert and adhesive bonding in at least a partial area of the groove. An exchange of air can take place via this section of the groove. It has proven to be entirely sufficient to provide this section of the groove with a small dimension, for example with a length of a few millimeters along the groove. Communicating spaces between the panes are advantageous in order to avoid the stresses on the edge area associated with pressure differences between the glazing interiors.
  • the panes of the insulating glazing can comprise coatings and / or functional elements known to the person skilled in the art, which are customary in building construction.
  • the panes can include sun protection coatings and / or electrically controllable functional elements such as electrochromic layers and / or liquid crystal layers.
  • Sun protection coatings can be designed, for example, as a switchable element, as a tinted layer or as an infrared-reflecting layer.
  • Infrared reflective coatings are also known to the person skilled in the art as low-E coatings.
  • the third pane of the insulating glazing preferably has a low-E coating.
  • Low-E coatings the thermal insulation properties of the insulating glazing can be increased and improved even further.
  • These coatings are thermal radiation reflective coatings that reflect a significant part of the infrared radiation, which leads to a reduced heating of the living space in summer.
  • the most varied of low-E coatings are known, for example, from DE 10 2009 006 062 A1, WO 2007/101964 A1, EP 0 912 455 B1, DE 199 27 683 C1, EP 1 218 307 B1 and EP 1 917 222 B1.
  • the third pane of the insulating glazing is preferably not prestressed. Since pressure equalization between the inner spaces between the panes is possible in insulating glazing according to the invention, the load on the third pane is significantly lower than in the case of hermetically sealed inner spaces between panes.
  • the third disk preferably has a thickness of 1 mm to 4 mm, particularly preferably 1 mm to 3 mm and in particular 1.5 mm to 3 mm.
  • the double spacer used enables an advantageous reduction in the thickness of the third pane with the same stability of the glazing due to the tension-free fixation.
  • the thickness of the third disk is preferably less than the thicknesses of the first and second disks. In one possible embodiment, the thickness of the first disk is 3 mm, the thickness of the second disk is 4 mm and the thickness of the third disk is 2 mm. Such an asymmetrical combination of the pane thicknesses leads to a considerable improvement in the acoustic damping.
  • the invention also relates to a method for producing insulating glazing according to the invention.
  • a frame is first formed from spacers, the spacers being arranged in such a way that each spacer at one end contacts the adjacent spacer located on an adjacent edge of the frame with its second end face .
  • the first end face is present as a free end.
  • the relative arrangement of the spacers to one another is the essential method step in the context of the invention.
  • the assembly process depends largely on whether the process is to produce double glazing or triple or multiple glazing.
  • double glazing only two outer panes need to be mounted on the spacer frame. In this case it must be ensured that the position of the spacers is fixed to one another during the assembly of the outer panes. This is possible, for example, by putting the spacers together to form a frame and fixing them together. On the double glazing obtained in this way, further spacer frames and further Panes are provided so that a triple or multiple glazing results.
  • a frame made of spacers is built up directly on one of the panes of the insulating glazing.
  • four spacer profiles are initially provided, the length of which corresponds to the profile length required in the insulating glazing and which are equipped with a plastically deformable sealing compound as a sealant on the respective first pane contact surfaces and on the second pane contact surfaces.
  • the spacer profiles are therefore already equipped with a sealant in such a way that they can be placed directly on a pane and glued to it.
  • spacer frames for double glazing can also first be preformed on a work surface as a single frame made of spacer profiles.
  • a strand of sealant can then be applied in a double glazing system to the pane contact surfaces of this prefabricated spacer frame, a first pane can be attached to a first pane contact surface and a second pane can be attached to a second pane contact surface and the arrangement can be pressed to form insulating glazing. If necessary, additional spacers and panes can be attached in this way to obtain triple or multiple glazing. If the spacer frame is preassembled individually on a work surface as just described, that is to say without a pane, the prefabricated frame must be processed individually, either manually or by machine. The forces exerted on the frame in the process can damage the frame.
  • a construction of the spacer frame directly on a pane has the advantage that the spacer frame can be handled together with the pane in the further process. This significantly reduces the risk of breakage of the frame pre-assembled on the pane.
  • further spacer frames are built up on one of the panes of the double glazing analogously to the method described, and further panes are attached to them.
  • a spacer suitable for frame construction on a pane corresponds to the spacer without a groove already described as part of the insulating glazing according to the invention, in contrast to which the spacer is already provided with a plastically deformable sealing compound on the pane contact surfaces becomes.
  • the plastically deformable sealing compound forms the seal of the inner space between the panes against the ingress of moisture.
  • the plastically deformable sealing compound offers the possibility of placing the spacer directly on a pane of glass. Compared to conventional insulating glass production, there is thus no need for an additional step in which the assembled spacer frame has to be provided with a sealing compound before it is installed in insulating glass.
  • the composition of the plastically deformable sealing compound corresponds to the sealant already described for connecting the first pane and the second pane and is preferably a butyl, particularly preferably a polyisobutylene.
  • the polyisobutylene can be a crosslinking or a non-crosslinking polyisobutylene.
  • a method for producing insulating glazing according to the invention using a spacer with a pre-applied sealant comprises at least the following steps:
  • spacers with the first pane contact surfaces on the first pane, wherein the spacers can be placed simultaneously and / or one after the other and are arranged to form a frame.
  • the spacers are preferably placed one after the other in a circular sequence, with the spacers being placed on the basis of a distance between the spacers to be maintained from the pane edge of the first pane. Placing in a circular sequence has the advantage that the position of the spacer to be placed can be optimally adapted to that of the spacer placed immediately beforehand and the second end surfaces of one spacer fit exactly against the glazing interior surface of the adjacent spacer.
  • the spacer with pre-applied plastically deformable sealing compound already contains a desiccant in one possible embodiment, which can absorb moisture from the inner pane interspace in the later insulating glazing and thus prevents the glass panes from misting up from the inside.
  • the desiccant is introduced into the hollow chamber of the spacer, also referred to as a hollow body.
  • the hollow body is closed by a first closure and a second closure against the loss of desiccant.
  • the first closure and / or the second closure can each be arranged on one of the end faces of the hollow body.
  • the spacer according to the invention thus offers the possibility of a considerably simplified assembly of the later insulating glazing. Thanks to the plastically deformable sealing compound present on the side walls, the individual hollow profiles can be assembled directly on the glass pane, so that it is no longer necessary to produce a spacer frame without contact with a glass pane. Since the hollow profile spacers are already filled with a desiccant, no extra step for filling with desiccant needs to be provided in insulating glass production, which considerably simplifies the production of the insulating glazing.
  • the hollow profile spacer can also be produced without a drying agent and filled subsequently, that is to say only during the production of the insulating glass.
  • the advantage of the pre-applied, plastically deformable sealing compound remains.
  • One advantage of the subsequent filling with desiccant is the simpler storage of the hollow profile spacers, which does not have to be done in the absence of moisture.
  • Another important advantage is that the risk of drying agent adhering to the spacer is minimized. Desiccant residues adhering electrostatically to the interior surface of the glazing at the spacer after filling can get into the interior of the glazing when the insulating glazing is installed. This means that the corresponding insulating glazing must be discarded as scrap.
  • the insulating glazing according to the invention with a blunt corner joint of the spacers offers a very good possibility of filling the spacers with a desiccant only after pressing the insulating glazing over the open cross-section of the first end face of the spacer. No desiccant can get into the interior of the glazing.
  • the invention also relates to a further method for producing insulating glazing comprising a first pane, a second pane and a third pane.
  • the insulating glazing thus represents triple or multiple glazing.
  • the method according to the invention for producing triple or multiple glazing is, in addition to the advantages of the spacer arrangement according to the invention already discussed, particularly advantageous in terms of improved stability of a pre-assembled spacer frame.
  • the method according to the invention for producing insulating glazing as triple or multiple glazing comprises at least the steps explained below.
  • a first step at least one third pane is provided, which serves as the middle pane of the insulating glazing.
  • middle discs can also be used.
  • spacers comprising at least one groove for receiving the at least one third pane are placed on the middle pane.
  • a spacer, which surrounds this edge with the groove of the spacer, is placed on each edge of the third pane.
  • the spacers form a surrounding frame around the middle pane.
  • Each spacer has two ends with a first end face at one end and a second end face at the other end.
  • each spacer With its second end face, each spacer contacts the interior surface of the glazing of the adjacent spacer located on an adjacent edge of the frame. At its other end, the inner glazing surface of each spacer is contacted by the second end surface of the adjacent spacer, while the first end surface of the spacer is exposed. The exposed first end surfaces, together with the outer surface of the spacers, form the outer surface of the frame.
  • a first pane is attached to the first pane contact surface of the frame made of spacers and a second pane is fastened to the second pane contact surface of the spacer frame.
  • the two panes can either be attached one after the other in any order or at the same time.
  • the panes are attached to the pane contact surfaces using a sealant and the arrangement is pressed into insulating glazing in a further step.
  • the seal is attached before the arrangement is pressed and seals the inner space between the panes against gas and water penetration.
  • the tightness and insulation properties of the This ensures insulating glazing.
  • the pressing of the edge bond of the first pane, spacer frame with at least inserted third pane and second pane causes a stable connection of the components of the insulating glazing.
  • the third disk is preferably inserted into the grooves of the spacers (step 2) in a circle - the third disk is inserted into the groove of a first spacer so that one end of the spacer goes over the edge of the inner disk with which the inner disk is inserted into the Spacer is inserted, survives.
  • the next spacer can be placed on the edge of the inner pane on which the first spacer protrudes and can be pushed up to the spacer so that the second end surface of the second spacer rests against the glazing interior surface of the first spacer.
  • the inventive arrangement of the spacers leads to a compensation of tolerances, since the spacers have a degree of freedom along the inserted edge when the third pane is inserted, which can be used to compensate for manufacturing tolerances.
  • the second spacer is in turn placed in such a way that the end of the second spacer which does not bear against the first spacer protrudes over the edge of the inner pane.
  • the third spacer can be placed in such a way that its second end surface comes into contact with the interior surface of the second spacer and when the inner pane is inserted into the third spacer, a degree of freedom is again available to compensate for manufacturing tolerances.
  • the fourth spacer is placed with its groove on the inner pane in an analogous manner.
  • the first end surfaces of the spacers face the outer seal and can have a protrusion over the surface of the circumferential frame in order to enable the compensation of manufacturing tolerances according to the invention.
  • the four spacers form a frame around the third pane, which is designed in such a way that precisely the first end face of each spacer is arranged on the outside of the frame and the second end face of each spacer comes into contact with the interior surface of the glazing of the adjacent spacer.
  • a fixed amount x must always be added to the length of the glass edge in order to obtain the length of the spacer provided for this glass pane. This simplifies the manufacture of the insulating glazing base body and avoids errors during assembly that can occur due to the incorrect cutting of spacers.
  • the approximate length of the spacer for a pane edge of the third pane results from the length of the pane edge minus the depth of the groove, plus the total height of the spacer minus the depth of the groove.
  • the calculation results from the fact that on the second end face of the spacer the adjacent spacer already covers an area of the pane edge with its groove, so the depth of the groove must be deducted. At the second end face, however, the spacer should protrude beyond the edge of the pane to the outer face of the adjacent spacer. Add the height of the spacer minus the depth of the groove. The depth of the groove is to be read in the sense of the explained calculation basis as the depth up to which a disk can be inserted into the groove.
  • the depth of the groove is also dependent, for example, on an insert which can optionally be inserted into the groove and which reduces the depth of the groove.
  • a guideline value for the cutting of the spacers results from these considerations. According to the invention, this value cannot be adhered to exactly since the arrangement of the spacers according to the invention compensates for deviations.
  • the method according to the invention for producing insulating glazing is less prone to errors and easier to carry out than conventional methods. Furthermore, a preliminary product consisting of a frame with a third pane and an insulating glazing are created which, due to the considerably improved possibility of compensating for manufacturing tolerances, has correspondingly improved mechanical properties and a higher level of impermeability.
  • the frame of the inner pane formed from the spacers can also be adapted so precisely to the dimensions of the inner pane by providing a degree of freedom when inserting it into each spacer that it has no play in the frame and thus no undesirable rattling or rattling noises occur.
  • the at least one third disk is glued into the grooves of the spacers.
  • Gluing in the pane has the advantage that the frame made of spacers is fixed immediately when the spacers are attached to the third pane. This simplifies the further production process, since accidental stripping of a spacer when handling the frame is excluded.
  • the corner areas of the spacer frame are preferably sealed with an insulating film in the form of an adhesive tape.
  • this insulating film preferably corresponds in its basic structure to the insulating films used for sealing polymeric spacers.
  • the corner areas must, if desired, be sealed before the first pane and / or the second pane is attached.
  • the outer surface of the spacer frame is difficult to access after the outer panes have been attached. Before these panes are attached, the outer surface and the pane contact surfaces of the spacer frame are freely accessible.
  • the insulation film is preferably used in the form of an adhesive tape with an adhesive layer, for example in the form of rolls of the appropriate width. The width depends on the width of the spacers and should preferably exceed this in such a way that the adhesive tape is proportionate to both
  • Disc contact surfaces protrudes.
  • the insulating film as an adhesive tape is continuously unrolled from a roll and pressed onto the outer surface of the spacer in the corner areas. Since the width of the adhesive tape exceeds the width of the spacer, the adhesive tape protrudes laterally beyond the spacer.
  • the adhesive tape is preferably centered in such a way that there is approximately the same lateral protrusion of the adhesive tape on both pane contact surfaces. After the adhesive tape has been passed around the corner of the frame and also adhered to the outer surface there, the window contact areas should be glued. In order to avoid the formation of creases, an incision is made in the adhesive tape on both lateral protrusions in the area of the corner bracket.
  • This cut runs essentially perpendicular to the pane contact surfaces of the spacers and separates the adhesive tape at adjacent edges of the frame in the area of the lateral overhang of the adhesive tape.
  • the adhesive tape can be folded over on the pane contact surfaces without wrinkling in the corner area.
  • the insulation film in the corner area leads to a mechanical stabilization of the pre-assembled frame, a seal against gas and water penetration and, in the case of hollow profile spacers, to a closure of the open first end faces of the spacer.
  • the insulation film in the form of an adhesive tape can be applied in the method according to the invention to the entire outer surface of the frame or only to the corner areas.
  • An insulating film is preferably applied to the entire outer surface of the frame, which is essentially formed by outer surfaces of the spacers.
  • the spacers already have a corresponding insulating film on the outer surface, or preferably on the outer surface and at least a partial area of the pane contact surfaces, when they are provided.
  • the corners only need to be sealed. This simplifies the production process considerably.
  • the corner areas can also be fixed with a commercially available adhesive tape that does not have the barrier functions of the insulation film.
  • the statements made in the description of the insulating glazing apply accordingly to the procedure. Fixing the spacer frame by means of an adhesive tape is basically also advantageous regardless of the configuration of the corners of the frame.
  • an insulating glazing base body could initially also be produced whose corner region does not have a butt joint according to the invention of the spacers.
  • adjacent spacers collide in the corner area of the spacer frame, for example at an angle of 45 °, and are fixed to one another by means of an adhesive tape on the outer surfaces of adjacent spacers.
  • the sequence of steps for a corresponding procedure would be as follows:
  • each spacer having a first pane contact surface for attaching a first outer pane, and a pane contact surface running parallel to it for attachment a second outer pane, a glazing interior surface, and a groove formed parallel to the pane contact surfaces in the glazing interior surface for inserting the inner pane;
  • the frame is built up directly on the inner pane of the insulating glazing to be produced. Since, according to the invention, the spacers are fixed directly around the inner pane by means of an adhesive tape, corner connectors are not used. Further measures for connecting the spacers to one another, such as gluing or welding, can also be dispensed with. However, these measures can optionally be provided for additional stabilization depending on the frame size.
  • the resulting preliminary product, the frame with an inner pane, referred to as the insulating glazing base is easy to handle and has a high mechanical stability compared to a three-sided frame fragment or a frame without a pane. The stability and tightness of the insulating glazing base body is, however, still significantly improved if the embodiment according to the invention is used with butt joint of the spacers.
  • an adhesive tape is only provided as an additional measure.
  • hollow profile spacers are used as spacers.
  • Such spacers have hollow chambers for receiving a desiccant.
  • the presence of a free first end face after the spacer frame has been pre-assembled can be used to advantage in this regard.
  • the first end face shows an open one Cross-section of the hollow chambers so that they are still accessible after the frame has been pre-assembled and can be filled with a desiccant.
  • a desiccant is filled into the relevant hollow chambers via an open cross section on the first end face of a spacer.
  • the open cross section of the filled spacer is closed at the first end face after the desiccant has been filled. This can be done using the insulating films described for corner sealing and / or alternatively or additionally using plugs or sealing compounds.
  • the frame with the third disc located therein is then rotated so that a filling with drying agent can take place at a further open cross section on the first end face of a further spacer.
  • the frame is preferably brought into position such that the second end face of the spacer to be filled points in the direction of the floor surface of the room.
  • the first end face is thus easily accessible and gravity makes it easier to fill in the desiccant.
  • the process is repeated until all hollow chambers for which a desiccant filling is required are filled with desiccant. Corner areas where desiccant should not be filled are simply sealed as described.
  • This embodiment of the method according to the invention is particularly advantageous with regard to a short service life of the drying agent under ambient conditions. Since the desiccant can only be filled in immediately before the outer panes are attached and the arrangement is pressed, it has a very short service life and thus a low load of water. This improves the life of the glazing. In comparison to a bore on the outer surface, which can be used according to the prior art for filling the drying agent, filling by means of the method according to the invention is considerably simpler in terms of process technology.
  • the desiccant is only introduced into the hollow chambers after the insulating glazing has been pressed.
  • a frame is formed from spacers around the third pane.
  • the abutting edge between the second end surfaces of the spacers and the glazing interior surfaces of the adjacent spacers can optionally already be closed be sealed with a sealant at this point, but the first end faces of the spacers must remain exposed.
  • the outer panes in the form of the first and second panes are then attached to the pane contact surfaces of the spacers. This is done as described using a sealant.
  • first pane, second pane and frame with third pane is then pressed together to form insulating glazing. Only then does the desiccant fill the hollow chambers.
  • the first end faces of the spacers are more difficult to access in such an arrangement, since the filling must take place through the outer space between the panes. This is possible, for example, by means of a lance which is inserted through the outer space between the panes into the open cross section of the spacer.
  • the opening to be filled is turned upwards so that the desiccant is filled into the hollow chamber by gravity. After filling, the first end face is closed with a plug or sealed by means of a sealant.
  • an insulating film is preferably applied to the outer surface of the frame. This is also done via the outer space between the panes. As described for the first embodiment of the method, the arrangement is then rotated and the process is repeated in further corner areas of the insulating glazing until all hollow chambers for which a desiccant filling is desired are filled. Corner areas where desiccant should not be filled are simply sealed as described.
  • This embodiment of the method according to the invention has the advantage that the glazing interior is already completely sealed before the insulating glazing enters areas of the production plant in which drying agent is processed. This ensures that no desiccant residues can get into the interior of the glazing. Common desiccants show electrostatic adhesion to panes and spacers. If the hollow chambers are filled before a closed glazing interior is formed, a careful check for any drying agent build-up must be carried out before further processing. This step is omitted according to the second embodiment of the method. This simplifies the process and minimizes production waste.
  • the described filling with desiccant can take place immediately before the outer space between the panes is filled with an outer seal.
  • the rotation of the arrangement is not only as described used for the desiccant filling, but at the same time also for the filling of the outer seal, which takes place with a small time lag immediately after the desiccant filling and sealing of the corner areas. This further increases process efficiency.
  • the spacers can be connected to one another, in particular glued, welded or ultrasonically welded, in accordance with the method according to the invention for producing triple or multiple glazing.
  • This is preferably done after the spacers have been attached to the circumferential edge of the third pane and before the outer panes are attached. This can further increase the stability of the frame.
  • such measures are preferably dispensed with if the pane has already been glued in the groove and / or the corners have been sealed by means of an insulating film in the form of an adhesive tape. These measures are completely sufficient to ensure good stability. Furthermore, these measures are also preferred because they are easier to implement in terms of process technology.
  • protruding ends of the spacers are cut off after the frame has been formed.
  • spacers of uniform length can be used when inserting the third pane, or the length of the spacers does not have to be matched to the dimensions of the inner pane before the third pane is inserted. Subsequent severing of protruding ends can, however, delay the further processing process, so that in general an essentially matching cut is made and there is no need to sever protruding ends.
  • the outer space between the panes is filled with an outer seal, which primarily serves the mechanical stability of the insulating glazing.
  • an inert gas is preferably used as the protective gas. All the features and associated advantages that have been described in connection with the method according to the invention can be used and transferred to the insulating glazing according to the invention and vice versa.
  • FIG. 1a shows a schematic plan view of an embodiment of the insulating glazing according to the invention as double glazing
  • FIG. 1 b shows a schematic plan view of a first end face of the spacer of the insulating glazing according to FIG. 1 a;
  • Figure 1c shows a cross section through the edge area of the insulating glazing according to
  • Figure 2a is a schematic perspective view of a spacer for
  • FIG. 2b shows a further schematic perspective view of the spacer from FIG. 2a;
  • FIG. 3 shows a schematic view of a frame with a third pane from which insulating glazing according to an exemplary embodiment of the present invention can be produced
  • Figure 4 is a schematic view to illustrate the attachment of a
  • FIG. 5 is a schematic view of insulating glazing according to one
  • FIG. 6 shows a schematic view of insulating glazing according to another
  • FIG. 7 shows a schematic view of insulating glazing according to another
  • Figure 8 is a flow chart of an embodiment of an inventive
  • FIG. 9 shows a flow chart of a further embodiment of a method according to the invention.
  • FIG. 10 shows a first disk 21 with spacers I arranged thereon with sealant 11 applied in advance.
  • FIG. 1 a shows a top view of an embodiment of the insulating glazing according to the invention I I as double glazing comprising a first pane 21 and a second pane 22 which are connected to one another via spacers I.
  • the spacers I each have a first end surface 5.1 and a second end surface 5.2, which run perpendicular to the outer surface 4 and to the glazing interior surface 3.1 of the spacers I.
  • the spacers I form a circumferential frame R, the spacers I being positioned circumferentially to one another in such a way that the first end surfaces 5.1 point in the direction of the outer pane gap 17 and the second end surfaces 5.2 of the spacers I directly adjoin one
  • FIG. 1 b shows the spacer I of the insulating glazing I according to FIG. 1 a in detail with a view of a first end face 5.1.
  • the sealing means 10 for closing the end face is not shown in this view for the sake of clarity.
  • the spacer I according to FIG. 1 b comprises a base body 1 in the form of a hollow body profile comprising two disc contact surfaces 2.1 and 2.2, one
  • the outer surface 4 has an angled shape, the sections of the outer surface 4 adjacent to the disc contact surfaces 2.1 and 2.2 being inclined at an angle of 30 ° to the disc contact surfaces 2.1 and 2.2. This improves the stability of the base body 1.
  • the hollow chamber 11.1 is filled with a desiccant 12. Molecular sieve is used as the desiccant 12.
  • the glazing interior area 3.1 of the spacer I has openings 8 which are attached at regular intervals circumferentially along the glazing interior area 3.1 to allow gas exchange between the To enable glazing interior 16 of the insulating glazing I and the hollow chamber 11.1. Any humidity present in the interior is thus absorbed by the desiccant 12.
  • FIG. 1c shows the insulating glazing II of FIG. 1a in a cross section through the hollow chamber 11.1 of the spacer I.
  • the sealing means 10 connects the pane contact surfaces 2.1 and 2.2 of the spacer I with the panes 21 and 22.
  • the glazing interior 16 adjoining the glazing interior surface 3.1 of the spacer I is defined as the space bounded by the panes 21, 22 and the spacer I.
  • the outer space 17 adjacent to the outer surface 4 of the spacer I is a strip-shaped circumferential section of the glazing which is delimited on one side by the two panes 21, 22 and on another side by the spacer I and the fourth edge of which is open.
  • the glazing interior 16 is filled with argon.
  • the sealing means 10, which seals the gap between the disk 21, 22 and spacer I, is introduced between a respective disk contact surface 2.1 or 2.2 and the adjacent disk 21 or 22.
  • the sealant 10 is polyisobutylene.
  • an outer seal 15 is applied in the outer space 17 between the panes, which is used to bond the first pane 21 and the second pane 22.
  • the outer seal 15 is made of polysulfite. The outer seal 15 ends flush with the pane edges of the first pane 21 and the second pane 22.
  • the base body 1 of the spacers I of FIGS. 1 a - 1 c is preferably designed either as a metallic base body or as a polymer base body 1.
  • the metallic base body 1 consists for example of aluminum.
  • the corner sealing in the case of metallic base bodies 1 takes place, for example, only via the sealing means 10, which is introduced into the open cross-sections of the spacers I at the first end faces 5.1.
  • the sealing means 10 which is introduced into the open cross-sections of the spacers I at the first end faces 5.1.
  • this contains styrene-acrylic-nitryl (SAN) and about 35% by weight of glass fiber.
  • SAN styrene-acrylic-nitryl
  • an insulating film (not shown) is applied to the outer surface 4 of the spacer I, which reduces the heat transfer through the polymeric base body 1 into the glazing interior 3.1.
  • the insulation film comprises four polymer layers made of polyethylene terephthalate with a thickness of 12 ⁇ m and three metallic layers made of aluminum with a thickness of 50 nm. The metallic layers and the polymer layers are attached alternately, with the two outer layers Layers of polymer layers are formed.
  • an insulation film is also applied in the corner area.
  • FIG. 2a shows a perspective view of a spacer I such as is used for the production of insulating glazing as triple insulating glazing according to the present invention.
  • the spacer I has an elongated, approximately cuboid shape.
  • the upper side of the spacer I shown in FIG. 2a forms a glazing interior surface 3 which is divided by a groove 6 into a first and a second glazing interior surface 3.1, 3.2.
  • the groove 6 extends along the entire, longest extension direction of the spacer I.
  • the spacer I has disc contact surfaces on its side surfaces.
  • a second disk contact area 2.2 can be seen in FIG. 2a.
  • a first pane contact surface 2.1 runs parallel to the second pane contact surface 2.2 on the side of the spacer I facing away in FIG. 2a.
  • the disk contact surfaces 2.1, 2.2 each serve to attach a first disk 21 and a second disk 22 (not shown) to the spacer I.
  • end faces 5.1, 5.2 perpendicular to the groove 6 and the disk contact surfaces 2.1, 2.2 are formed.
  • a first end face 5.1 is shown in Figure 2a.
  • the second end face 5.2 (not shown) is located on the surface of the spacer opposite the first end face 5.1.
  • FIG. 2b shows a further perspective view of the spacer I from FIG. 2a, seen from the first end face 5.1.
  • This view shows the groove 6 formed in the interior surface 3 of the glazing, as well as the pane contact surfaces 2.1, 2.2 formed parallel to the groove 6 and an outer surface 4 of the spacer, which is arranged on the side of the spacer I facing away from the groove 6.
  • the spacer of FIGS. 2a and 2b is particularly preferably a hollow profile spacer, which each has a hollow chamber (not shown) below the first and the second interior surface of the glazing.
  • FIG. 3 is a schematic view to illustrate a method for producing insulating glazing according to an exemplary embodiment of the present invention. Only the step of attaching the spacers to the third pane is shown in FIG.
  • the spacers I are not cut at 45 °, but have the configuration shown in Figures 2a and 2b, in which the end surfaces 5.1 and 5.2 run perpendicular to the direction of extent of the groove 6 and the disc contact surfaces 2.1, 2.2.
  • the spacers I are arranged on the inner pane 23 in such a way that the inner pane 23 is inserted into the grooves 6 of the spacers I.
  • Each spacer I is in contact at one of its ends with the adjacent spacer I with one of its end faces 5.2, and at its other end it makes contact with the adjacent spacer I with its glazing interior surface 3.
  • a second end face 5.2 abuts a glazing interior surface 3.
  • Each spacer I has exactly one end face 5.1 facing the outside of the frame R.
  • the spacers I can be arranged one after the other on the third pane 23 or essentially simultaneously. It is crucial that the inventive arrangement of the spacer I, in which each spacer contacts the adjacent spacer I with its second end face 5.2 with one end and the other end contacts the adjacent spacer I with the glazing interior surface 3, one degree of freedom for each spacer I. is created in the arrangement on the third disk 23, since each spacer I can be moved during or after the insertion of the third disk 23 into the groove 6 along the direction of extent of the groove 6.
  • the third pane 23 can first be completely inserted into the groove 6 and the spacer I can then be pushed with its second end face 5.2 onto the glazing interior surface 3 of the adjacent spacer I.
  • insulating glazing can be created in which tolerances of the dimensions of the third pane 23 and the depth of the grooves 6 of the spacers I can be optimally compensated.
  • the outside of the frame which is formed by the outer surfaces 4 and the first end surfaces 5.1 of the spacers I, can be covered with an insulating film 13.
  • the insulating film 13 is provided on a roll and is unrolled along the outer circumference of the frame R and pressed against the outer surfaces 4 and end surfaces 5.1 of the spacers I.
  • the insulation film 13 is preferably self-adhesive.
  • the insulation film 13 effects, on the one hand, a mechanical stabilization of the frame R and a mechanical connection of the spacers I; on the other hand, it fulfills a barrier function and ensures a gas- and moisture-tight seal of the frame and thus also of the insulating glazing obtained from it.
  • FIG. 4 only shows the application of an insulating film 13 to the outer surface 4.
  • the insulation film 13 is preferably also attached to a section of the pane contact surfaces 2.1, 2.1 that is adjacent to the outer surface 4.
  • An insulation film 13 is used, the width of which exceeds the width of the outer surface 4. This is applied to the outer surface 9 as illustrated in FIG. 4, the overhang of the insulating film 13 due to the greater width being approximately the same on the sides of both pane contact surfaces 2.2, 2.2.
  • This protrusion of the insulating film 13 is provided with a cut on both sides at all corners of the frame R so that the insulating film 13 can be folded over onto the pane contact surfaces without creases.
  • the spacers I shown in FIG. 3 have hollow chambers which extend between the groove 6 and the disk contact surfaces 2.1, 2.2 along the entire length of the groove 6. These hollow chambers can be used before the insulation film 13 is applied be filled with a desiccant.
  • the filling can advantageously take place after the spacers I have been assembled to form a frame.
  • the open cross-section at the first end face 5.1 of the spacer is available for this.
  • it is advantageous to close the hollow chambers at the end faces 5.1, in each case immediately after filling, so that the desiccant of the already filled spacers does not escape when other frame sections are subsequently filled. Sealing of the end face 5.1 is possible, for example, with the insulating film 13 (as explained), a stopper or a sealant, for example a butyl seal.
  • the frame R shown in Figures 3 and 4 with the third pane 23 can be supplemented to form an insulating glazing by attaching a first pane 21 to the continuous first pane contact surface of the frame R formed by the first pane contact surfaces 2.1 of the spacer I and to which the second pane contact surfaces 2.2 of the spacer I formed, continuous second pane contact surface of the frame R a second pane 22 is attached.
  • the panes 21, 22 are glued by means of a sealant 10.
  • An insulating glazing formed in this way is shown in a schematic sectional illustration in FIG.
  • a spacer I is shown in a section perpendicular to the direction of extent of the groove 6.
  • the third disk 23 is inserted into the groove 6; the first and second disk 21, 22 are attached to the first and second disk contact surfaces 2.1 and 2.2, respectively.
  • These disks 21, 22 serve as outer disks and are each connected to the associated disk contact surfaces 2.1, 2.2 via sealing means 10.
  • the spacer I has the hollow chambers 11.1, 11.2 described above, which are each located between the groove 6 and a disk contact surface 2.1, 2.2.
  • the hollow chambers 11.1, 11.2 are filled with a desiccant 12.
  • the glazing interior surfaces 3.1, 3.2 have corresponding openings 8 which are arranged in the embodiment shown in Figure 5 at regular intervals parallel to the direction of extent of the groove 6.
  • the glazing interiors are sealed by the spacer I and the sealing means 10 and can be filled with a protective gas. According to FIG.
  • the third disk 23 is not connected to the groove 6 in a materially bonded manner. It is just a plug connection.
  • the groove 6 can optionally also contain an insert. Since the third pane 23 is not cohesively connected to the grooves 6, the corner areas of the frame R of the insulating glazing II of FIG. 5 were fixed with an insulating film 13 in the form of an adhesive tape immediately after the frame R was attached to the third pane 23. This prevents the third disk 23 from slipping out of the grooves 6 and the frame R is mechanically stabilized.
  • the spacers I are metallic spacers, so that an insulating film 13 on the outer surface 4 can be dispensed with outside the corner regions.
  • FIGS. 6 and 7 show spacers I with polymeric base bodies, on the outer surface 4 of which an insulating film 13 is glued to the base body.
  • the third disk 23 is glued into the groove 6 with a liquid or viscous adhesive 9.2, the adhesive 9.2 covering both a bottom surface 7.1 and side flanks 7.2 of the groove 6.
  • the insulating film 13, which is applied to the outer surface 4 of the spacer I, can also be seen.
  • FIG. 7 An exemplary embodiment is shown in FIG. 7 in which the third disk 23 is fixed to the bottom surface 7.1 of the groove 6 with a double-sided adhesive tape 9.2.
  • a non-transparent, preferably dark, adhesive tape is selected as the adhesive tape 9.2
  • the adhesive tape 9.2 in addition to fixing the third pane 23 in the groove 6, can help suppress unwanted optical reflections that can occur when the inner pane edges are cut under inclined incidence of light.
  • the outer panes 21, 22 protrude beyond the outer surface 4 of the spacer I so that a circumferential edge area of the insulating glazing is created.
  • This edge area is filled with an outer seal 15 which is formed, for example, from an organic polysulfide.
  • the base bodies 1 of the spacers I according to FIGS. 6 and 7 are polymeric base bodies which contain styrene-acrylonitrile (SAN).
  • SAN styrene-acrylonitrile
  • the base body 1 are glass fiber reinforced.
  • the base body 1 can contain SAN with about 35% by weight of glass fibers.
  • the polymeric spacers of FIGS. 6 and 7 can also be used without gluing in the groove 6 (see FIG. 5).
  • an insulating film 13 is used on the circumferential outer surface 4, which can either be applied subsequently or provided with the spacers I.
  • metallic spacers can also be combined with the adhesive bonding in the grooves 6 explained in FIGS. 6 and 7.
  • the insulating glazing according to the invention and the manufacturing method thereof have been described for the case of a (essentially) rectangular inner pane (third pane 23).
  • the invention can also be used for other shapes of the inner panes, for example for inner panes with a trapezoidal shape.
  • the angle between the end faces 5.1, 5.2 and the groove 6 of the spacer I must then be adapted accordingly to the corner angle of the inner pane.
  • Figure 8 shows a flow chart of an embodiment of the invention
  • Steps IX to XI I in which the desiccant 12 is filled into the hollow chambers 1 1.1, 1 1.2, can at the same time also be used to fill the outer space 17 between the panes with an outer seal 15. While the desiccant 12 is being filled into a spacer I, the outer pane gap 17 adjacent to the outer surface of the spacer I is already filled with the seal 15, the spacer I filled with desiccant 12 on of the first end face 5.1 is sealed and the already sealed end face 5.1 of the previously filled spacer I is immediately enclosed with the seal 15 with the rotation of the insulating glazing II necessary to fill the next spacer I.
  • the filling with desiccant 12 and the sealing of the outer space 17 between the panes thus take place within one step with a time offset. This is particularly advantageous in terms of saving time in the production process.
  • FIG. 9 shows a flow chart of a further embodiment of the method according to the invention for producing triple insulating glazing, comprising the steps:
  • FIG. 10 shows a first disk 21 with spacers I arranged thereon with sealant 11 applied in advance, as is obtained after step vi of the method according to FIG. What is shown is a top view of the second pane contact surface 2.2 of the surrounding frame (R) made of spacers I before the second pane 22 is placed in step vii of the method according to FIG. 9.

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

Abstract

L'invention concerne un vitrage isolant (II) comprenant au moins une première vitre (21), une deuxième vitre (22) et un cadre périphérique (R) constitué d'éléments intercalaires (I), qui présentent à chaque fois une surface de contact (2.1) avec la première vitre, une surface de contact (2.2) avec la deuxième vitre, parallèle à ladite première surface, une surface d'espace interne de vitrage (3), une surface externe (4) et des surfaces d'extrémité (5.1, 5.2) perpendiculaires à la direction d'étendue des surfaces de contact (2.1, 2.2). Selon l'invention, – la première vitre (21) est appliquée au niveau de la surface de contact (2.1) avec la première vitre et la deuxième vitre (22) est appliquée au niveau de la surface de contact (2.2) avec la deuxième vitre, le cadre (R) entoure un espace interne de vitrage (16), qui est renfermé par des sections des surfaces d'espace interne du vitrage (3) des éléments intercalaires (I), – la surface externe (4) opposée à la surface d'espace interne du vitrage (3) des éléments intercalaires (1) renferme, conjointement avec la première vitre (21) et la deuxième vitre (22), un espace intermédiaire de vitre externe (17) et chaque élément intercalaire (I) présente deux extrémités et met en contact, en l'une extrémité, l'élément intercalaire (1) adjacent se trouvant au niveau d'un bord adjacent du cadre (R) avec sa deuxième surface d'extrémité (5.2) et met en contact, en son autre extrémité, l'élément intercalaire (I) adjacent avec sa surface d'espace interne de vitrage (3) et sa première surface d'extrémité (5.1) point vers l'espace intermédiaire de vitre externe (17).
EP20708097.9A 2019-03-13 2020-03-04 Vitrage isolant pourvu d'un positionnement amélioré de l'élément intercalaire ainsi que procédé pour sa fabrication Withdrawn EP3938609A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP19162478 2019-03-13
EP19162472 2019-03-13
PCT/EP2020/055707 WO2020182576A1 (fr) 2019-03-13 2020-03-04 Vitrage isolant pourvu d'un positionnement amélioré de l'élément intercalaire ainsi que procédé pour sa fabrication

Publications (1)

Publication Number Publication Date
EP3938609A1 true EP3938609A1 (fr) 2022-01-19

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EP20708097.9A Withdrawn EP3938609A1 (fr) 2019-03-13 2020-03-04 Vitrage isolant pourvu d'un positionnement amélioré de l'élément intercalaire ainsi que procédé pour sa fabrication

Country Status (3)

Country Link
EP (1) EP3938609A1 (fr)
DE (1) DE202020005895U1 (fr)
WO (1) WO2020182576A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH636402A5 (de) * 1978-11-17 1983-05-31 Sulzer Ag Isolationselement zum einsatz zwischen den scheiben eines verbundfensters.
US6231999B1 (en) 1996-06-21 2001-05-15 Cardinal Ig Company Heat temperable transparent coated glass article
DE19927683C1 (de) 1999-06-17 2001-01-25 Sekurit Saint Gobain Deutsch Sonnen- und Wärmestrahlen reflektierende Verbundglasscheibe
FR2799005B1 (fr) 1999-09-23 2003-01-17 Saint Gobain Vitrage Vitrage muni d'un empilement de couches minces agissant sur le rayonnement solaire
DE20303253U1 (de) * 2003-02-28 2003-06-18 Hero Glas Veredelungs Gmbh Brandschutzverglasung
DE102005039707B4 (de) 2005-08-23 2009-12-03 Saint-Gobain Glass Deutschland Gmbh Thermisch hoch belastbares Low-E-Schichtsystem für transparente Substrate, insbesondere für Glasscheiben
FR2898123B1 (fr) 2006-03-06 2008-12-05 Saint Gobain Substrat muni d'un empilement a proprietes thermiques
DE102009006062A1 (de) 2009-01-24 2010-07-29 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Infrarotstrahlung abschirmendes, für sichtbares Licht transparentes Laminat mit einem für Infrarotstrahlung durchlässigen optischen Fenster, Verfahren zu seiner Herstellung und seiner Verwendung
DE202012013283U1 (de) 2012-01-13 2015-11-23 Saint-Gobain Glass France Abstandshalter für Isolierverglasungen
JP6234560B2 (ja) 2013-06-14 2017-11-22 サン−ゴバン グラス フランスＳａｉｎｔ−Ｇｏｂａｉｎ Ｇｌａｓｓ Ｆｒａｎｃｅ ３重断熱ガラス用のスペーサ

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WO2020182576A1 (fr) 2020-09-17

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