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EP3052731B2 - Pièce intercalaire pour vitrages isolants - Google Patents

Pièce intercalaire pour vitrages isolants Download PDF

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Publication number
EP3052731B2
EP3052731B2 EP14753266.7A EP14753266A EP3052731B2 EP 3052731 B2 EP3052731 B2 EP 3052731B2 EP 14753266 A EP14753266 A EP 14753266A EP 3052731 B2 EP3052731 B2 EP 3052731B2
Authority
EP
European Patent Office
Prior art keywords
wall
spacer
base body
spacer according
insulating
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.)
Active
Application number
EP14753266.7A
Other languages
German (de)
English (en)
Other versions
EP3052731B1 (fr
EP3052731A1 (fr
Inventor
Hans-Werner Kuster
Walter Schreiber
Martin RIGAUD
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
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
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Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to EP14753266.7A priority Critical patent/EP3052731B2/fr
Priority to PL14753266.7T priority patent/PL3052731T5/pl
Publication of EP3052731A1 publication Critical patent/EP3052731A1/fr
Publication of EP3052731B1 publication Critical patent/EP3052731B1/fr
Application granted granted Critical
Publication of EP3052731B2 publication Critical patent/EP3052731B2/fr
Active legal-status Critical Current
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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
    • E06B3/66361—Section members positioned at the edges of the glazing unit with special structural provisions for holding drying agents, e.g. packed in special containers
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66304—Discrete spacing elements, e.g. for evacuated glazing units
    • 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
    • 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
    • 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
    • E06B3/67313—Making spacer frames, e.g. by bending or assembling straight sections by bending
    • 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
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775—Evacuating or filling the gap during assembly
    • 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

Definitions

  • the invention relates to a spacer for insulating glazing, a method for its production, its use and an insulating glazing.
  • Insulating glazing is used almost exclusively in the window and facade areas of buildings.
  • Insulating glazing usually consists of two panes of glass which are arranged at a defined distance from each other using a spacer. The spacer is arranged all the way around the edge of the glazing. This creates a gap between the panes which is usually filled with an inert gas. The heat flow between the interior space delimited by the glazing and the outside environment can be significantly reduced by insulating glazing compared to simple glazing.
  • the spacer has a significant influence on the thermal properties of the pane.
  • Conventional spacers are made of a light metal, usually aluminum. These are easy to process.
  • the spacer is typically manufactured as a straight, continuous profile, which is cut to the required size and then bent into the rectangular shape required for use in insulating glazing.
  • the insulating effect of the glazing is significantly reduced in the edge area ( cold edge effect).
  • spacers In order to improve the thermal properties, so-called warm edge solutions for spacers are known. These spacers are made primarily of plastic and therefore have a significantly reduced thermal conductivity. Plastic spacers are made, for example, of DE 27 52 542 C2 or DE 19 625 845 A1 known. However, when it comes to processing, plastic spacers have disadvantages. For example, they can be produced as a continuous profile by extrusion, but the subsequent bending requires local heating of the material, which is not easy to achieve with conventional machines. Such profiles therefore require considerable investment for the manufacturer of insulating glazing.
  • the plastic spacer with a metallic foil to improve its flexibility.
  • the metallic foil is arranged in particular on the surfaces facing the glass panes and the surface of the spacer lying between them, facing away from the space between the panes.
  • the improvement in the bending properties in this solution is accompanied by a deterioration in the thermal properties because the metallic foil acts as a thermal bridge.
  • the thermal advantages of the plastic spacer are therefore offset to a certain extent.
  • the present invention is based on the object of providing such a spacer.
  • the spacer according to the invention for insulating glazing made up of at least two glass panes comprises at least one polymeric base body.
  • the polymeric base body comprises at least two side walls that are parallel to one another and are intended to face the glass panes and to be brought into contact with the glass panes, and that are connected to one another by an inner wall and an outer wall.
  • the side walls, the inner wall and the outer wall surround a hollow chamber.
  • Such a hollow chamber is usual for spacers and is intended in particular to accommodate a desiccant.
  • a reinforcing strip is embedded in each side wall of the polymer base body.
  • the reinforcing strip preferably contains at least one metal or a metallic alloy.
  • embedded means that the reinforcing strip is surrounded on all sides by the material of the polymer base body or the side walls of the polymer base body.
  • the reinforcing strips give the spacer the flexibility it needs to be processed using conventional industrial equipment.
  • the spacer can be bent into its final shape without having to be heated beforehand.
  • the reinforcing strips ensure that the shape remains permanently stable.
  • the reinforcing strips also increase the stability of the spacer.
  • the reinforcing strips do not act as a thermal bridge, so that the properties of the spacer with regard to heat conduction are not significantly negatively affected. There are two main reasons for this: (a) the reinforcing strips are embedded in the polymer base body, so they have no contact with the environment; (b) the reinforcing strips are arranged in the side walls and not in the outer wall or the inner wall, via which the heat exchange between the space between the panes and the external environment takes place.
  • the simultaneous realization of flexibility and optimal thermal properties is the decisive advantage of the present invention.
  • the inventors have also recognized that the flexibility depends on the glass fiber content of the polymer base body.
  • the glass fiber content of conventional polymer spacers made of glass fiber reinforced plastic is around 35% by weight. This glass fiber content ensures sufficient stability of the spacer. However, the spacer with such a high glass fiber content is too stiff to be bent without damage.
  • the inventors have recognized that a glass fiber content of no more than 20% by weight enables good flexibility. The lower stiffness and stability associated with the reduced glass fiber content, in particular with respect to restoring forces after bending, is compensated for by the reinforcement profiles according to the invention.
  • the reinforcing strips according to the invention in combination with the low glass fiber content of the polymer base body according to the invention thus enable good flexibility and at the same time high stability and rigidity in the installation position.
  • the other sections of the base body except the side walls, in particular the inner wall and the outer wall, preferably have no metallic inclusions.
  • the thermal conductivity ( ⁇ value) of the spacer is preferably less than 0.25 W/(m*K), particularly preferably less than 0.2 W/(m*K). This means the thermal conductivity measured for the entire spacer (equivalent thermal conductivity) without taking into account local fluctuations in thermal conductivity depending on the exact position on the spacer. Such low thermal conductivities can surprisingly be achieved by a polymer base body with the reinforcement profile according to the invention.
  • the side walls of the polymer base body are designed to face the glass panes in the manufactured insulating glazing.
  • the spacer comes into contact with the glass panes via the side walls. There does not have to be direct contact between the spacer and the pane. Instead, contact can be made indirectly, for example via a sealing compound.
  • the inner wall is designed to face the gap between the glass panes in the manufactured insulating glazing.
  • the inner wall is provided with holes to ensure the effect of a desiccant in the hollow chamber on the gap.
  • the outer wall is opposite the inner wall and is intended to face the external environment of the insulating glazing.
  • the outer wall faces out from the space between the glass panes in which the spacer is arranged.
  • the side walls, the outer wall and the inner wall and optionally the connecting sections each preferably have a thickness (material thickness) of 0.5 mm to 2 mm, particularly preferably 0.8 mm to 1.5 mm.
  • the thickness of the polymer base body is preferably constant, i.e. all walls and sections have the same thickness. Such a spacer is easy to process and advantageously stable.
  • the inner wall, the outer wall and the side walls are each flat.
  • the inner wall, the outer wall and the side walls are flat sections of the polymer base body.
  • Each wall is connected at its ends to the respective ends of the two adjacent walls.
  • the side walls can be connected directly to the inner wall and the outer wall.
  • the inner wall is connected directly to the side walls, while the outer wall is connected indirectly, namely via connecting sections, to the side walls.
  • the connecting sections are preferably also flat.
  • the inner wall is preferably arranged at an angle of approximately 90° to each side wall.
  • the side walls are parallel to one another and the inner wall is parallel to the outer wall.
  • the connecting sections are preferably arranged at an angle to each side wall of 120° to 150°, ideally 135°. This shape for the spacer has proven particularly successful.
  • the width of the polymer base body is preferably from 5 mm to 35 mm, particularly preferably from 5 mm to 33 mm, for example from 10 mm to 20 mm. In the sense of the invention, the width is the dimension extending between the side walls. The width is the distance between the surfaces of the two side walls facing away from each other. The width of the base body determines the distance between the two panes of glass in the insulating glazing.
  • the height of the polymer base body is preferably from 3 mm to 20 mm, particularly preferably from 5 mm to 10 mm and very particularly preferably from 5 mm to 8 mm.
  • the spacer has advantageous stability, but on the other hand is advantageously inconspicuous in the insulating glazing.
  • the hollow chamber of the spacer has an advantageous size for accommodating a suitable amount of desiccant.
  • the height is the distance between the surfaces of the outer wall and the inner wall facing away from each other.
  • the polymeric base body preferably contains at least polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), acrylonitrile-butadiene-styrene (ABS), acrylester-styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene-polycarbonate (ABS/PC), styrene-acrylonitrile (SAN), polyethylene terephthalate-polycarbonate (PET/PC), polybutylene terephthalate-polycarbonate (PBT/PC) or copolymers or derivatives or mixtures thereof.
  • PE polyethylene
  • PC polycarbonates
  • PP polypropylene
  • polystyrene polybut
  • the polymeric base body particularly preferably contains polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), Acrylates-styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene-polycarbonate (ABS/PC), styrene-acrylonitrile (SAN), polyethylene terephthalate-polycarbonate (PET/PC), polybutylene terephthalate-polycarbonate (PBT/PC) or copolymers or derivatives or mixtures thereof.
  • PP polypropylene
  • ABS acrylonitrile-butadiene-styrene
  • ASA acrylonitrile-butadiene-styrene-polycarbonate
  • SAN styrene-acrylonitrile
  • PET/PC polyethylene terephthalate-polycarbonate
  • PBT/PC polybutylene terephthalate-polycarbonate
  • the polymer base body has a glass fiber content of 0 wt.% to 20 wt.%, particularly preferably 0 wt.% to 15 wt.%.
  • the glass fiber content is low. This reduces the rigidity and stability of the spacer, but advantageously improves its flexibility. The reduced stability, in particular with regard to restoring forces after bending, is compensated for by the reinforcing profiles according to the invention.
  • the glass fiber content is 0% by weight, so the polymer base body does not contain any glass fiber reinforced plastic.
  • the polymer base body contains glass fiber reinforced plastic, with the glass fiber content being less than 20% by weight, preferably less than 15% by weight. The glass fiber content in particular allows the thermal expansion coefficient of the base body to be varied and adjusted.
  • the reinforcing strip according to the invention contains at least steel.
  • Steel is readily available, easy to process and gives the spacer particularly advantageous flexibility and also improves stability and rigidity.
  • the steel is particularly preferably not stainless steel, which is particularly advantageous in terms of the cost of the spacer. Corrosion of the steel is prevented by incorporating it into the polymer base body.
  • the reinforcement strip has a thickness of 0.2 mm to 0.4 mm, in particular 0.25 mm to 0.35 mm. In a particularly preferred embodiment, the thickness of the reinforcement strip is approximately 0.3 mm. This achieves particularly good results in terms of the flexibility, rigidity and stability of the spacer.
  • the reinforcement strip has a width of 1 mm to 5 mm. This ensures good flexibility and stiffening.
  • the width of the reinforcement strip naturally also depends on the width of the side wall in each individual case.
  • the length of the reinforcement strip preferably corresponds to the length of the polymer base body.
  • the reinforcing strip can be perforated.
  • the flexibility can be advantageously influenced by suitable perforation.
  • the reinforcing strip is connected to the polymer base body via an adhesion promoter.
  • Each contact surface between the reinforcing strip and the base body is preferably provided with the adhesion promoter. This is particularly advantageous for the adhesion between the polymer base body and the reinforcing strip and thus for the stability of the spacer.
  • the spacer is provided with an insulating film. The insulating film further reduces the thermal conductivity of the spacer. The insulating film also prevents diffusion through the spacer. This prevents in particular the penetration of moisture into the space between the panes and the loss of an inert gas from the space between the panes.
  • the insulating film preferably has a gas permeation of less than 0.001 g/(m 2 h).
  • the insulation film is arranged at least on the outer surface of the outer wall.
  • the outer surface refers to the surface of a wall facing away from the hollow chamber.
  • the insulation film is preferably arranged at least on the outer surface of the entire section of the base body containing the outer wall between the side walls. If the outer wall is connected to the side walls via a connecting section, for example, the insulation film is arranged on the outer surfaces of the outer wall and the two connecting sections.
  • the insulation film is arranged on the outer surface of the entire section of the base body containing the outer wall between the side walls and additionally at least on the outer surface of at least one section of each side wall. The insulation film therefore extends from the first side wall across the outer wall (and possibly connecting sections) to the opposite side wall. This achieves particularly good results in terms of the stability of the composite of polymer base body and insulation file and in terms of the thermal properties of the spacer.
  • the insulation film contains at least one polymeric film.
  • the polymeric film serves as a carrier film and preferably has a thickness of 10 ⁇ m to 100 ⁇ m, particularly preferably 15 ⁇ m to 60 ⁇ m, which is advantageous for the stability of the insulation film.
  • the insulation film also contains at least one metallic or ceramic layer that is applied to the carrier film.
  • the thickness of the metallic or ceramic layer is preferably from 10 nm to 1500 nm, particularly preferably from 10 nm to 400 nm, very particularly preferably from 30 nm to 200 nm. This achieves particularly good results in terms of the insulation effect.
  • the insulation film preferably contains at least one further polymeric layer, the thickness of which is preferably from 5 ⁇ m to 100 ⁇ m, particularly preferably from 15 ⁇ m to 60 ⁇ m.
  • the polymeric carrier film and the polymeric layer consist of the same material. This is particularly advantageous because a smaller variety of materials used simplifies the production process.
  • the polymeric film and the polymeric layer or layers preferably have the same material thickness, so that the same starting material can be used for all polymeric components of the insulation film.
  • the polymeric film and/or the polymeric layer preferably contain at least polyethylene terephthalate, ethylene vinyl alcohol, polyvinylidene chloride, polyamides, polyethylene, polypropylene, silicones, acrylonitriles, polymethyl acrylates or copolymers or mixtures thereof.
  • a metallic layer preferably contains iron, aluminium, silver, copper, gold, chromium or alloys or mixtures thereof.
  • a ceramic layer preferably contains silicon oxide and/or silicon nitride.
  • the insulation film preferably contains at least two metallic or ceramic layers, with at least one polymer layer being arranged between two adjacent metallic or ceramic layers. This is particularly advantageous for the insulating effect of the polymer film, in particular because any defects within a layer can be compensated for by one of the other layers. In addition, several thin layers have better adhesion properties than a single thick layer.
  • the top layer of the insulation film is preferably a polymer layer, which serves to protect the metallic or ceramic layers. The top layer is the layer that is the greatest distance from the polymer carrier film.
  • the insulation film has two to four metallic or ceramic layers. The metallic or ceramic layers are preferably arranged alternately with at least one polymer layer.
  • the invention further comprises insulating glazing, comprising at least two glass panes arranged parallel to one another and a spacer according to the invention arranged in the edge region between the glass panes.
  • the spacer is preferably designed in the shape of a frame all the way around.
  • Each side wall faces one of the glass panes and is brought into contact with the respective glass pane.
  • the side walls of the spacer are preferably connected to the glass panes via a sealing layer.
  • Butyl is suitable as a sealing layer, for example.
  • An outer sealing compound is preferably arranged at least on the outer wall of the spacer, preferably in the edge space between the panes and the spacer.
  • the outer, preferably plastic sealing compound contains, for example, polymers or silane-modified polymers, particularly preferably organic polysulfides, silicones, RTV (room temperature crosslinking) silicone rubber, HTV (high temperature crosslinking) silicone rubber, peroxide-crosslinked silicone rubber and/or addition-crosslinked silicone rubber, polyurethanes, butyl rubber and/or polyacrylates.
  • polymers or silane-modified polymers particularly preferably organic polysulfides, silicones, RTV (room temperature crosslinking) silicone rubber, HTV (high temperature crosslinking) silicone rubber, peroxide-crosslinked silicone rubber and/or addition-crosslinked silicone rubber, polyurethanes, butyl rubber and/or polyacrylates.
  • the space between the panes is preferably evacuated or filled with an inert gas, such as argon or krypton.
  • the hollow chamber of the spacer is preferably completely or partially filled with a desiccant. Residual moisture in the space between the panes is absorbed by the desiccant so that the panes cannot fog up.
  • desiccants are silica gels, molecular sieves, CaCl 2 , Na 2 SO 4 , activated carbon, silicates, bentonites and/or zeolites.
  • the insulating glazing preferably has a Psi value of less than 0.05 W/(m*K), preferably less than 0.035 W/(m*K).
  • the Psi value is measured as the thermal conductivity of the insulating glass with frame system.
  • the glass panes are preferably made of soda-lime glass.
  • the thickness of the panes can in principle be varied as desired, but a thickness of 1 mm to 25 mm, preferably 3 mm to 19 mm, is particularly common.
  • the transparency of the panes is preferably greater than 85%.
  • the insulating glazing can of course also comprise more than two glass panes, with a spacer according to the invention preferably being arranged between each two adjacent glass panes.
  • the polymer base body with the reinforcement strips is produced as a continuous profile by extrusion.
  • a profile section with the length required for use in the insulating glass is cut from this continuous profile.
  • the profile section has a first and a second end.
  • the profile section is then glued onto the surrounding, usually rectangular frame shape.
  • the ends are preferably connected to each other, for example by a plug connection, in order to improve the stability of the frame shape.
  • the hollow chamber of the spacer is preferably filled with a desiccant.
  • the desiccant can also be extruded together with the base body.
  • the bending of the profile section preferably takes place without prior heating, in particular at ambient temperature.
  • a particular advantage of the spacer with the reinforcing strips according to the invention is that such heating is not necessary.
  • the spacer can therefore be processed on conventional industrial production systems.
  • the polymer base body is provided with an insulating film according to the invention. This is preferably done before bending the spacer.
  • the insulating film can be applied to the base body by gluing, for example, or can also be extruded together with the base body.
  • the insulating glass according to the invention is produced by arranging the frame-shaped spacer in the edge region between two parallel glass panes.
  • the glass panes are connected to the spacer, preferably by pressing and via a sealing layer each.
  • An external sealing compound is then arranged at least on the outer wall.
  • the edge space between the panes and the spacer is preferably filled all around with the external sealing compound.
  • the space between the glass panes delimited by the frame-shaped spacer is preferably subjected to negative pressure and/or filled with an inert gas.
  • the invention further includes the use of the spacer according to the invention in multiple glazings, preferably in insulating glazings.
  • the insulating glazings are preferably used as window glazings or facade glazings of buildings.
  • the invention is explained in more detail below with reference to a drawing and exemplary embodiments.
  • the drawing is a schematic representation and not to scale. The drawing does not limit the invention in any way.
  • Fig.1 shows a cross section through a spacer according to the invention for insulating glazing.
  • the spacer comprises a polymer base body I, which consists for example of polypropylene (PP).
  • the polymer has a glass fiber content of 0 wt.% or a relatively low glass fiber content of for example 10 wt.%.
  • the base body I comprises two side walls 1, 2 which are parallel to one another and are intended to be brought into contact with the panes of the insulating glass. Between one end of each side wall 1, 2 there is an inner wall 3 which is intended to face the space between the panes of the insulating glass.
  • a connecting section 7, 7' is connected to the other ends of the side walls 1, 2.
  • the side walls 1, 2 are connected to an outer wall 4 via the connecting sections 7, 7', which is designed parallel to the inner wall 3.
  • the angle ⁇ between the connecting sections 7 (or 7') and the side wall 3 (or 4) is approximately 45°. This means that the angle between the outer wall 4 and the connecting sections 7, 7' is also approximately 45°.
  • the base body I surrounds a hollow chamber 5.
  • the material thickness of the side walls 1, 2, the inner wall 3, the outer wall 4 and the connecting sections 7, 7' is approximately the same and is, for example, 1 mm.
  • the base body has, for example, a height of 6.5 mm and a width of 15 mm.
  • a reinforcement strip 6 is embedded in each side wall 1, 2.
  • the reinforcement strips 6, 6' are made of steel, which is not stainless steel, and have a thickness (material thickness) of, for example, 0.3 mm and a width of, for example, 3 mm.
  • the length of the reinforcement strips 6, 6' corresponds to the length of the base body I.
  • the reinforcing strips give the base body I sufficient flexibility and stability to be bent without prior heating and to permanently maintain the desired shape.
  • the spacer has a very low thermal conductivity because the metallic reinforcing strips 6, 6' are only embedded in the side walls 1, 2, via which only a very small part of the heat exchange between the interior of the pane and the external environment takes place.
  • the reinforcing strips 6, 6' do not act as a thermal bridge.
  • An insulating film 8 is arranged on the outer surface of the outer wall 4 and the connecting sections 7, 7' as well as a section of the outer surface of each of the side walls 1, 2.
  • the insulating film 8 reduces diffusion through the spacer. This can prevent moisture from entering the interior of an insulating glazing. or the loss of the inert gas filling of the pane interior can be reduced.
  • the insulation film 8 also improves the thermal properties of the spacer, thus reducing the thermal conductivity.
  • the insulation film 8 comprises the following layer sequence: a polymer carrier film (consisting of LLDPE (linear low density polyethylene), thickness: 24 ⁇ m) / a metallic layer (consisting of aluminum, thickness: 50 nm) / a polymer layer (PET, 12 ⁇ m) / a metallic layer (Al, 50 nm) / a polymer layer (PET, 12 ⁇ m).
  • the layer stack on the carrier film therefore contains two polymer layers and two metallic layers, wherein the polymer layers and the metallic layers are arranged alternately.
  • the layer stack can also comprise further metallic layers and/or polymer layers, wherein metallic and polymer layers are preferably also arranged alternately, so that a polymer layer is arranged between each two adjacent metallic layers and a polymer layer is arranged above the uppermost metallic layer.
  • the spacer according to the invention Due to the composite of polymer base body I, the reinforcing strips 6, 6' and the insulation film 8, the spacer according to the invention has advantageous properties with regard to rigidity, tightness and thermal conductivity. It is therefore particularly suitable for use in insulating glass, in particular in the window or facade area of buildings.
  • Fig.2 shows a cross section through an insulating glass according to the invention in the area of the spacer.
  • the insulating glass consists of two glass panes 10, 11 made of soda-lime glass with a thickness of, for example, 3 mm, which are connected to one another via a spacer according to the invention arranged in the edge area.
  • the spacer is the spacer according to Fig.1 with the reinforcement strips 6,6' and the insulation foil 8.
  • the side walls 1, 2 of the spacer are each connected to the glass panes 10, 11 via a sealing layer 13.
  • the sealing layer 13 consists, for example, of butyl.
  • An external sealing compound 9 is arranged all around the edge of the insulating glass between the glass panes 10, 11 and the spacer.
  • the sealing compound 9 is, for example, a silicone rubber.
  • the hollow chamber 5 of the base body I is filled with a desiccant 12.
  • the desiccant 12 is, for example, a molecular sieve.
  • the desiccant 12 absorbs any residual moisture present between the glass panes and the spacer and thus prevents the panes 10, 11 from fogging up in the space between the panes.
  • the effect of the desiccant 12 is promoted by holes (not shown) in the inner wall 3 of the base body I.
  • Fig.3 shows a flow chart of an embodiment of the method according to the invention for producing a spacer for an insulating glass.
  • a spacer according to the invention was produced according to Figure 1 manufactured with the reinforcing strips 6, 6' according to the invention and the insulation film 8.
  • the spacer was manufactured as a straight profile and then bent into the required shape for use in insulating glazing. It was then assessed whether the spacer had been damaged by the bending process, which prevented its use, and whether it permanently retained the desired shape. If the spacer had not been damaged and retained its shape, it was classified as "bendable”.
  • the thermal conductivity of the spacer ( ⁇ value) was also measured. This was the equivalent thermal conductivity, i.e. a measurement for the entire spacer, which does not take into account the location dependence of the thermal conductivity on the spacer. The results are summarized in Table 1.
  • Comparative example 1 differed from the example according to the invention in the design of the spacer. Otherwise, comparative example 1 was carried out in the same way as the example.
  • the spacer in comparative example 1 had no reinforcing strips 6, 6' embedded in the side walls.
  • the glass fiber content of the polymer base body I was 35% by weight. Apart from that, the spacer corresponded to that of Figure 1 The results are summarized in Table 1.
  • Comparative example 2 differed from the example according to the invention in the design of the spacer. Otherwise, comparative example 2 was carried out in the same way as the example.
  • the spacer in comparative example 2 had no reinforcing strips 6, 6' embedded in the side walls. Instead, a stainless steel foil with a thickness of 0.1 mm was applied to the outer surface of the side walls, the connecting sections and the outer wall in order to provide the spacer with flexibility in accordance with the prior art.
  • the glass fiber content of the polymer base body I was 35% by weight. The results are summarized in Table 1. Table 1 bendable? Thermal conductivity Example Yes 0.18 W/(m*K) Comparison example 1 no 0.16 W/(m*K) Comparison example 2 Yes 0.30 W/(m*K)
  • the spacer according to the invention in the example was bendable due to the reinforcement strips 6,6'.
  • the thermal conductivity was only increased insignificantly by the reinforcement strips 6,6'.
  • the spacer according to the invention in the example had a significantly lower thermal conductivity. The reason for this is the reinforcement strips 6,6' according to the invention, which, in contrast to the stainless steel foil according to the prior art, do not serve as a thermal bridge.
  • the spacer according to the invention therefore combines sufficient flexibility with very low thermal conductivity. This result was unexpected and surprising for the person skilled in the art.

Landscapes

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

Claims (14)

  1. Entretoise pour un vitrage isolant, comprenant au moins:
    - un corps de base polymère (I), comprenant au moins deux parois latérales (1, 2) parallèles l'une à l'autre, qui sont reliées entre elles par une paroi intérieure (3) et une paroi extérieure (4), les parois latérales (1, 2), la paroi intérieure (3) et la paroi extérieure (4) entourant une chambre creuse (5), et
    - au moins sur la paroi extérieure (4), un film isolant (8) qui contient un film de support polymère et au moins une couche métallique ou céramique,
    une bande de renforcement (6, 6'), qui contient au moins un métal ou un alliage métallique, étant insérée dans chaque paroi latérale (1, 2),
    caractérisé en ce que le corps de base (I) présente une proportion de fibres de verre de 0 % en poids à 20 % en poids et la bande de renforcement (6, 6') ayant une épaisseur de 0,2 mm à 0,4 mm et une largeur de 1 mm à 5 mm.
  2. Entretoise selon la revendication 1, dans laquelle la bande de renforcement (6, 6') contient au moins de l'acier, qui n'est de préférence pas de l'acier inoxydable.
  3. Entretoise selon la revendication 1 ou 2, dans laquelle la bande de renforcement (6, 6') a une épaisseur de 0,25 mm à 0,35 mm.
  4. Entretoise selon l'une des revendications 1 à 3, dans laquelle l'épaisseur du film de support polymère du film isolant (8) est de 10 µm à 100 µm et l'épaisseur de la couche métallique ou céramique du film isolant (8) est de 10 nm à 1500 nm, et dans laquelle le film isolant (8) contient au moins une autre couche polymère d'une épaisseur de 5 µm à 100 µm.
  5. Entretoise selon la revendication 4, dans laquelle le film isolant (8) contient de deux à quatre couches métalliques ou céramiques, chacune étant disposée en alternance avec au moins une couche polymère.
  6. Entretoise selon la revendication 4 ou 5, dans laquelle la couche métallique ou céramique du film isolant (8) contient au moins du fer, de l'aluminium, de l'argent, du cuivre, de l'or, du chrome, de l'oxyde de silicium, nitrure de silicium ou des alliages ou des mélanges de ceux-ci, et dans lequel le film support polymère du film isolant (8) contient au moins du polyéthylène téréphtalate, de l'éthylène alcool vinylique, du polychlorure de vinylidène, des polyamides, du polyéthylène, du polypropylène, des silicones, des acrylonitriles, des polyméthylacrylates ou des copolymères ou des mélanges de ceux-ci.
  7. Entretoise selon l'une des revendications 1 à 6, dans laquelle le corps de base (I) comprend au moins du polyéthylène (PE), des polycarbonates (PC), du polystyrène, du polybutadiène, des polynitriles, des polyesters, des polyuréthanes, des polyméthylmétacrylates, des polyacrylates, des polyamides, du polyéthylène téréphtalate (PET), du polybutylène téréphtalate (PBT), de préférence du polypropylène (PP), acrylonitrile-butadiène-styrène (ABS), acrylonitrile-styrène-ester acrylique (ASA), polycarbonate d'acrylonitrile-butadiène-styrène (ABS/PC), styrène-acrylonitrile (SAN), polycarbonate de téréphtalate d'éthylène (PET/PC), polycarbonate de téréphtalate de polybutylène (PBT/PC) ou des copolymères ou des dérivés ou des mélanges de ceux-ci.
  8. Entretoise selon l'une des revendications 1 à 7, dans laquelle le corps de base (I) présente une teneur en fibres de verre de 0 % à 15 % en poids.
  9. Entretoise selon l'une des revendications 1 à 8, dans laquelle la bande de renfort (6, 6') est perforée.
  10. Entretoise selon l'une quelconque des revendications 1 à 9, dans laquelle les parois latérales (1, 2), la paroi interne (3) et la paroi externe (4) sont respectivement planes, la paroi interne (3) étant directement reliée aux parois latérales (1, 2) et la paroi externe (4) étant reliée aux parois latérales (1, 2) par des portions de liaison planes (7, 7'), l'angle α entre la paroi latérale (1, 2) et la portion de liaison (7, 7') étant compris entre 120° et 150°.
  11. Entretoise selon l'une des revendications 1 à 10, qui présente une conductivité thermique inférieure à 0,25 W/(m*K), de préférence inférieure à 0,2 W/(m*K).
  12. Vitrage isolant, comprenant au moins deux feuilles de verre (10, 11) disposées parallèlement l'une à l'autre, une entretoise disposée dans la zone marginale entre les feuilles de verre (10, 11) selon l'une des revendications 1 à 11, chaque paroi latérale (1, 2) étant tournée vers l'une des feuilles de verre (10, 11), et une couche d'étanchéité extérieure (9) au moins sur la paroi extérieure (4), la chambre creuse (5) étant de préférence remplie totalement ou partiellement d'un agent desséchant (12), de préférence des gels de silice, des tamis moléculaires, du CaCl2, du Na2SO4, du charbon actif, des silicates, des bentonites, et/ou des zéolithes.
  13. Procédé de fabrication d'une entretoise pour vitrage isolant selon l'une quelconque des revendications 1 à 11, dans lequel
    a) deux bandes de renfort (6, 6') sont disposées parallèlement l'une à l'autre,
    b) les bandes de renforcement (6, 6') sont enrobées par injection d'un matériau polymère, ce qui donne le corps de base polymère (I),
    c) un film isolant (8) est appliquée au moins sur la paroi extérieure (4) du corps de base (I),
    d) le corps de base polymère (I) est découpé et
    e) le corps de base en polymère (I) est plié en une forme de cadre périphérique et les extrémités du corps de base en polymère (I) sont reliées entre elles.
  14. Utilisation d'une entretoise selon l'une des revendications 1 à 11 dans des vitrages multiples, de préférence dans des vitrages isolants, en particulier dans des vitrages de fenêtres ou des vitrages de façades de bâtiments.
EP14753266.7A 2013-09-30 2014-08-22 Pièce intercalaire pour vitrages isolants Active EP3052731B2 (fr)

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EP14753266.7A EP3052731B2 (fr) 2013-09-30 2014-08-22 Pièce intercalaire pour vitrages isolants
PL14753266.7T PL3052731T5 (pl) 2013-09-30 2014-08-22 Element dystansowy dla oszkleń izolacyjnych

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Application Number Priority Date Filing Date Title
EP13186710 2013-09-30
EP14753266.7A EP3052731B2 (fr) 2013-09-30 2014-08-22 Pièce intercalaire pour vitrages isolants
PCT/EP2014/067901 WO2015043848A1 (fr) 2013-09-30 2014-08-22 Entretoise pour vitrages isolants

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EP3052731A1 EP3052731A1 (fr) 2016-08-10
EP3052731B1 EP3052731B1 (fr) 2018-04-11
EP3052731B2 true EP3052731B2 (fr) 2024-06-19

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EP (1) EP3052731B2 (fr)
JP (1) JP6419168B2 (fr)
KR (2) KR20180021248A (fr)
CN (1) CN105579653A (fr)
AU (1) AU2014327719B2 (fr)
BR (1) BR112016001213B1 (fr)
CA (1) CA2920464C (fr)
DK (1) DK3052731T4 (fr)
EA (1) EA030837B1 (fr)
MX (1) MX2016004016A (fr)
PL (1) PL3052731T5 (fr)
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AU2014327719A1 (en) 2016-02-18
TR201807298T4 (tr) 2018-06-21
JP2016531821A (ja) 2016-10-13
DK3052731T4 (da) 2024-07-29
KR20160047539A (ko) 2016-05-02
EP3052731B1 (fr) 2018-04-11
CA2920464A1 (fr) 2015-04-02
JP6419168B2 (ja) 2018-11-07
EP3052731A1 (fr) 2016-08-10
DK3052731T3 (da) 2018-05-28
KR20180021248A (ko) 2018-02-28
EA030837B1 (ru) 2018-10-31
PL3052731T5 (pl) 2024-07-15
MX2016004016A (es) 2016-06-02
PL3052731T3 (pl) 2018-08-31
BR112016001213B1 (pt) 2021-11-03
CN105579653A (zh) 2016-05-11
US20160201381A1 (en) 2016-07-14
WO2015043848A1 (fr) 2015-04-02
AU2014327719B2 (en) 2016-11-24
BR112016001213A2 (pt) 2017-08-29
EA201690676A1 (ru) 2016-07-29
CA2920464C (fr) 2017-10-31

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