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WO2024245666A1 - Espaceur segmenté pour unités de verre isolées - Google Patents

Espaceur segmenté pour unités de verre isolées Download PDF

Info

Publication number
WO2024245666A1
WO2024245666A1 PCT/EP2024/061756 EP2024061756W WO2024245666A1 WO 2024245666 A1 WO2024245666 A1 WO 2024245666A1 EP 2024061756 W EP2024061756 W EP 2024061756W WO 2024245666 A1 WO2024245666 A1 WO 2024245666A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
spacer
plastic
side wall
section
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.)
Pending
Application number
PCT/EP2024/061756
Other languages
German (de)
English (en)
Inventor
Christopher MARJAN
Walter Schreiber
Nikolai BORCHMANN
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 WO2024245666A1 publication Critical patent/WO2024245666A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

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

Definitions

  • the invention relates to spacers for insulating glass units, a method for producing a spacer, an insulating glass unit, a method for producing an insulating glass unit and the use of the insulating glass unit.
  • Insulated glass units usually contain at least two panes of glass or polymeric materials. The panes are separated from each other by a gas or vacuum space defined by the spacer.
  • the thermal insulation capacity of insulating glass is significantly higher than that of single glass and can be further increased and improved in triple glazing or with special coatings. For example, silver-containing coatings enable a reduced transmission of infrared radiation and thus reduce the cooling of a building in winter.
  • the other components of an insulating glass unit are also of great importance.
  • the seal and especially the spacer have a major influence on the quality of the insulating glass unit.
  • thermal insulation properties of insulating glass units are significantly influenced by the thermal conductivity in the area of the edge seal, in particular the spacer.
  • the high thermal conductivity of the metal leads to the formation of a thermal bridge at the edge of the pane.
  • This thermal bridge leads to heat losses in the edge area of the insulating glass unit on the one hand and, in the case of high humidity and low outside temperatures, to the formation of condensate on the inner pane in the area of the spacer on the other.
  • thermally optimized, so-called "warm edge” systems are increasingly being used, in which the spacers are made of materials with lower thermal conductivity, in particular plastics.
  • polymer spacers are preferable to metal spacers.
  • polymer spacers have several disadvantages. Firstly, the impermeability of polymer spacers to moisture and gas loss is not sufficient.
  • a barrier film to the outside of the spacer.
  • the coefficients of linear expansion of plastics are much higher than those of glass.
  • glass fibers can be added, for example (see EP0852280 A1 and DE19807454 A1). However, an increased proportion of glass fibers impairs the heat-conducting properties of the spacer, so precise optimization is required here. Glass fibers and similar fillers also improve the longitudinal rigidity of the spacer.
  • Polymeric glass fiber reinforced spacers are so brittle that, unlike metal spacers, they cannot be cold-bent.
  • To produce a spacer frame for an insulating glass unit several pieces of spacer must be connected via connectors and glued or welded. Each connection point must be carefully sealed.
  • One approach to increasing the bendability is to integrate a metal strip into the polymer base body (described, for example, in WO2015/043848 A1 and DE19807454 A1).
  • integrating a metal strip into the polymer base body is very complex to manufacture.
  • Polymer spacers without additional fillers such as glass fibers are flexible and not sufficiently stiff.
  • the longitudinal stiffness refers to the deflection in the longitudinal direction
  • An improvement in the longitudinal stiffness can be achieved by integrating metallic strips (see previous point) or by externally applying metallic elements to the body (see for example EP1055046 B2 and EP3241972 A1).
  • the application of a metallic strip impairs the thermally conductive properties of the spacer, since the metallic elements have an increased thermal conductivity.
  • a particular difficulty when externally applying individual metallic elements is the perfect sealing of the edge seal against the ingress of moisture.
  • the design of a spacer means finding a compromise between mechanical performance and thermal insulation properties, since the best performing materials tend to have poor mechanical performance from a thermal point of view and vice versa.
  • a combination of different materials with different properties in a spacer produced by co-extrusion wherein the different materials are arranged coaxially in the spacer.
  • a first plastic and a second plastic are used, the second plastic having a lower thermal conductivity and a higher flexibility than the first plastic and the base body of the spacer being designed as a hollow profile made from the second plastic, in which the first plastic is arranged on the inside, at least in some areas, directly adjacent to the hollow profile.
  • this does not make it possible to achieve a spacer with the lowest possible thermal conductivity, since it cannot be guaranteed that the heat exchange between the internal first plastic and the panes can be prevented.
  • DE 10 2011 009 359 A1 discloses a spacer profile with a hollow profile body made of a first plastic material and with a diffusion barrier region made of a second plastic material with layered silicate, which is designed at least as part of the outer wall to form a diffusion barrier.
  • a diffusion barrier region made of the second plastic material with layered silicate By arranging the diffusion barrier region made of the second plastic material with layered silicate, a low thermal conductivity along the outer wall of the spacer cannot be guaranteed.
  • the object of the present invention is to provide an improved spacer which has good mechanical performance and improved thermal insulation properties, as well as being economically viable to produce and environmentally friendly.
  • a method for producing the spacers according to the invention, an insulating glass unit according to the invention, a method for producing the insulating glass unit according to the invention and their use according to the invention emerge from further independent claims.
  • the spacer according to the invention for insulating glass units according to a first aspect comprises at least one base body co-extruded from a first plastic and a second plastic, comprising a first side wall and a second side wall arranged parallel thereto, a glazing interior wall which connects the side walls to one another, an outer wall which is arranged substantially parallel to the glazing interior wall and which connects the side walls directly or via connecting walls to one another, a cavity which is enclosed by the side walls, the glazing interior wall and the outer wall or by the side walls, the glazing interior wall, the outer wall and the connecting walls, wherein the base body is designed as a hollow profile formed from the first plastic and the second plastic, which has an alternating arrangement of segments A and segments B, wherein a segment A is formed from the first plastic and a segment B is formed from the second plastic and the segments A and B each extend along a longitudinal direction Z of the spacer and adjoin one another in the longitudinal direction Z, the outer wall comprises a first section which consists of a segment B and is arranged in the middle of
  • the first side wall and the second side wall represent the sides of the spacer on which the outer panes of an insulating glass unit are mounted when the spacer is installed.
  • the first side wall and the second side wall run parallel to each other.
  • the outer wall of the base body is the wall opposite the glazing interior wall, which points away from the interior of the insulating glass unit (inner space between the panes) in the direction of the outer space between the panes.
  • the outer wall preferably runs essentially perpendicular to the side walls.
  • the optional first connecting wall and the optional second connecting wall preferably run at an angle a (alpha) of 30° to 60° to the outer wall.
  • the angled shape of the first connecting wall and the second connecting wall improves the stability of the base body and enables better bonding and insulation of the spacer according to the invention.
  • the base body preferably has a width of 5 mm to 80 mm, preferably 10 mm to 20 mm, along the glazing interior wall.
  • 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 distance between the panes of the insulating glass unit is determined by the choice of the width of the glazing interior wall.
  • the exact dimensions of the glazing interior wall depend on the dimensions of the insulating glass unit and the desired size of the space between the panes.
  • the base body preferably has a height of 5 mm to 15 mm along the side walls, particularly preferably 5 mm to 10 mm.
  • the spacer has advantageous stability, but on the other hand is advantageously inconspicuous in the insulating glass unit.
  • the cavity of the spacer has an advantageous size for accommodating a suitable amount of desiccant.
  • the height of the spacer is the distance between the surfaces of the outer wall facing away from one another and the glazing interior wall.
  • the glazing interior wall, the outer wall, the connecting walls and the side walls are preferably 0.5 mm to 1.5 mm, particularly preferably 0.8 mm to 1.0 mm, thick.
  • the glazing interior wall, the outer wall, the connecting walls and the side walls have a uniform thickness.
  • the glazing interior wall, the outer wall, the connecting walls and/or the side walls have a different thickness.
  • regions of the base body that are exposed to strong mechanical stress can have a greater thickness than regions that represent more thermally relevant regions of the base body.
  • the glazing interior wall and the outer wall have a smaller thickness than the side walls and the connecting walls.
  • the total thickness of the outer wall of the spacer according to the first aspect is designated according to the invention as D1.
  • total thickness is meant here the complete cross section of the outer wall in the height direction Y.
  • the spacer according to the invention has a transverse direction X, a height direction Y and a longitudinal direction Z, which are each perpendicular to one another.
  • the longitudinal direction Z is the extension direction of the spacer.
  • the segments A and B each extend along the longitudinal direction Z of the spacer and adjoin one another in the longitudinal direction Z.
  • the transverse direction X of the spacer runs parallel to the glazing interior wall and the outer wall of the spacer.
  • the height direction Y of the spacer runs parallel to the side walls of the spacer.
  • an "alternating arrangement" of segments A and segments B means that the segments A and B are arranged alternately along the cavity in the cross-sectional view of the base body.
  • This alternating arrangement of segments A and B can achieve good thermal insulation of the spacer, since a segment B, which is made of the second plastic with lower thermal conductivity, is arranged at least in sections along the cavity, which separates areas of the spacer that have a segment A, which is made of the first plastic with higher thermal conductivity, from one another.
  • segment A is made from the first plastic and segment B is made from the second plastic.
  • the second plastic has a lower thermal conductivity than the first plastic.
  • the second plastic has a thermal conductivity that is at least 5%, particularly preferably at least 10%, further preferably at least 20% lower than the first plastic.
  • the second plastic has a lower rigidity than the first plastic.
  • the second plastic has a rigidity that is at least 5%, particularly preferably at least 10%, most particularly preferably at least 30% lower than the first plastic.
  • the first plastic is a glass fiber reinforced plastic and the second plastic is a plastic that has a lower glass fiber content than the first plastic or is a glass fiber-free plastic.
  • the glass fiber content of the glass fiber reinforced plastic is preferably 10% to 40%, in particular 25% to 40%.
  • the second plastic is a foamed plastic, whereby the thermal properties of the spacer can be improved.
  • both the first plastic and the second plastic are foamed plastics and the first plastic is a glass fiber reinforced plastic.
  • the first plastic and the second plastic independently contain, for example, polyethylene (PE), polypropylene (PP), polycarbonate (PC), thermoplastic polyurethane (TPU), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polymethyl methacrylate (PMMA), PET/PC, PBT/PC, polyamide, polystyrene (PS), styrene- Acrylonitrile copolymer (SAN), polymethyl methacrylate, polyacrylate, acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-styrene-acrylate copolymer (ASA), acrylonitrile-butadiene-styrene-polycarbonate (ABS/PC) and/or copolymers or mixtures thereof.
  • PE polyethylene
  • PP polypropylene
  • PC polycarbonate
  • TPU thermoplastic polyurethane
  • PET polyethylene terephthalate
  • PBT poly
  • the first plastic and the second plastic independently contain polycarbonate (PC), polymethyl methacrylate (PMMA), polystyrene (PS), styrene-acrylonitrile copolymer (SAN), acrylonitrile-butadiene-styrene copolymer (ABS) and/or copolymers or mixtures thereof.
  • PC polycarbonate
  • PMMA polymethyl methacrylate
  • PS polystyrene
  • SAN styrene-acrylonitrile copolymer
  • ABS acrylonitrile-butadiene-styrene copolymer
  • the first plastic is a glass fiber reinforced PP and the second plastic is a PP that is not glass fiber reinforced.
  • the first plastic is a glass fiber reinforced SAN and the second plastic is a SAN that is not glass fiber reinforced.
  • the first plastic is a glass fiber reinforced ABS and the second plastic is an ABS that is not glass fiber reinforced.
  • the first plastic is a glass fiber reinforced ABS and the second plastic is a TPU that is not glass fiber reinforced.
  • the outer wall comprises a first section which consists of a segment B and is arranged in the middle of the outer wall in the transverse direction X of the spacer and over the entire thickness D1 of the outer wall in the vertical direction Y of the spacer.
  • the arrangement of the first section according to the invention can ensure good thermal insulation along the outer wall. This is particularly advantageous when using the spacer in an insulating glass unit, since the heat transfer between a first pane and a second pane, between which the outer wall is located, can be significantly reduced or prevented.
  • the first section is arranged in the middle of the outer wall in the transverse direction X of the spacer. This means that the first section extends symmetrically outwards in both directions from a center line which divides the outer wall into two equal parts in the view of the hollow profile. "Symmetrical” here means that the two sections of the first section which extend in the two directions from the center line are approximately the same length. The symmetrical arrangement of the first section can ensure that when pressure is exerted on the spacer the pressure is evenly distributed and that there is no distortion of the shape of the spacer during its manufacturing process.
  • the first section extends over at least 20%, preferably at least 30%, more preferably at least 40%, even more preferably at least 45%, of the outer wall in the transverse direction X of the spacer.
  • the first section extends over at most 95%, preferably at most 90%, more preferably at most 80%, even more preferably at most 75%, of the outer wall in the transverse direction X of the spacer. This ensures that the outer wall has sufficiently high thermal insulation properties.
  • a total of at least 5%, preferably at least 10%, more preferably at least 20%, even more preferably at least 25% of the outer wall in the transverse direction X of the spacer have sections that are made of the first plastic.
  • the outer wall has sufficiently high thermal insulation properties.
  • the outer wall comprises two sections which are formed from the first plastic and between which the first section is arranged.
  • the first side wall comprises a second section, which consists of a segment B.
  • the arrangement of the second section according to the invention ensures good thermal insulation along the first side wall. This is particularly advantageous when using the spacer in an insulating glass unit, since the first side wall is connected to a first pane of the insulating glass unit and the arrangement of the second section can prevent or reduce the heat transfer between the first pane and the spacer.
  • the second section is arranged over the entire thickness of the first side wall, so that in this area a good thermal insulation property can be achieved along the first side wall.
  • the second section extends further to the transition of the first side wall and the first connecting wall. According to a further embodiment, the second section extends further to the transition of the first side wall and the glazing interior wall.
  • the first side wall consists of the second section, whereby the best possible thermal insulation can be achieved along the entire contact surface with the first pane.
  • the third section is arranged over the entire thickness of the second side wall, so that in this area a good thermal insulation property can be achieved along the second side wall.
  • the third section extends further to the transition between the second side wall and the second connecting wall. According to a further embodiment, the third section extends further to the transition between the second side wall and the glazing interior wall.
  • the second side wall consists of the third section, whereby the best possible thermal insulation can be achieved along the entire contact surface with the second pane.
  • the fourth section is arranged in the middle of the glazing interior wall in the transverse direction X of the spacer.
  • the fourth section extends over at least 20%, preferably at least 30%, more preferably at least 40%, even more preferably at least 45%, of the glazing interior wall in the transverse direction X of the spacer.
  • the fourth section extends over at most 95%, preferably at most 90%, more preferably at most 80%, even more preferably at most 75%, of the glazing interior wall in the transverse direction X of the spacer. This ensures that the glazing interior wall has sufficiently high thermal insulation properties.
  • a total of at least 5%, preferably at least 10%, more preferably at least 20%, even more preferably at least 25% of the glazing interior wall in the transverse direction X of the spacer have sections that are made of the first plastic.
  • the glazing interior wall has sufficiently high thermal insulation properties.
  • the glazing interior wall preferably comprises two sections which are made of the first plastic and between which the fourth section is arranged.
  • the fourth section is arranged over the entire thickness of the glazing interior wall, so that in this area a good thermal insulation property can be achieved along the glazing interior wall.
  • the transition of the first side wall and the outer wall or the transition of the first connecting wall and the outer wall comprises a fifth section consisting of a segment A.
  • the fifth section preferably extends from the transition into the first side wall and the outer wall or into the first connecting wall and the outer wall. In this way, forces acting due to a load in the region of the fifth section can be distributed even better.
  • the transition of the second side wall and the outer wall or the transition of the second connecting wall and the outer wall comprises a sixth section which consists of a segment A.
  • the sixth section preferably extends, starting from the transition, into the second side wall and the outer wall or into the second connecting wall and the outer wall. In this way, forces which act due to a load in the region of the sixth section can be distributed even better.
  • the transition between the first side wall and the glazing interior wall comprises a seventh section, which consists of a segment A.
  • the seventh section preferably extends from the transition into the first side wall and into the glazing interior wall. In this way, forces acting due to a load in the area of the seventh section can be distributed even better.
  • the transition between the second side wall and the glazing interior wall comprises an eighth section, which consists of a segment A.
  • the eighth section preferably extends from the transition into the second side wall and into the glazing interior wall. In this way, forces acting due to a load in the area of the eighth section can be distributed even better.
  • the base body comprises at least eight sections, preferably exactly eight sections.
  • the presence of the large number of sections allows the properties of the spacer to be adjusted particularly well, particularly with regard to thermal insulation and, if applicable, mechanical performance.
  • the base body preferably consists of four segments A and four segments B.
  • the base body further comprises at least one section on the inside and/or outside of the cavity, which is made of the first plastic and/or the second plastic.
  • a layer can be arranged on the entire surface of the glazing interior wall on the outside of the cavity, which is made of the second plastic. This layer can be perceived by the observer when the spacer is installed in an insulating glass unit.
  • a glass fiber-free plastic as the second plastic, a smooth surface can be obtained which has a high gloss effect.
  • the second plastic can comprise a pigment which colors the second plastic.
  • the spacer can be perceived as colored by the outside observer without the entire spacer having to contain pigments, which makes the spacer more cost-effective and environmentally friendly overall.
  • the first plastic and the second plastic from which the base body is made apart from the layer do not have to meet high optical requirements, since these are not visible from the outside, so that the first plastic and the second plastic for the base body apart from the layer can independently contain a recycled material or consist of a recycled material.
  • the entire base body has a layer on the outside of the cavity which is made of the second plastic. In this way, the thermal insulation of the spacer can be further improved.
  • the entire base body can have a layer made of the first plastic on the inside of the cavity.
  • the spacer has a barrier film.
  • the barrier film is preferably arranged on the outer wall, the optional first connecting wall and the optional second connecting wall and at least on part of the side walls.
  • the barrier film can be attached to the base body, for example, with an adhesive.
  • the barrier film comprises, for example, a metal-containing barrier layer made of 7 pm thick aluminum, a polymer layer made of 12 pm thick polyethylene terephthalate (PET) and a metal-containing thin layer made of 10 nm thick aluminum.
  • PET polyethylene terephthalate
  • Polyethylene terephthalate is particularly suitable for protecting the 7 pm thick aluminum layer from mechanical damage, since PET films are characterized by particularly high tear resistance.
  • the film layers are arranged, for example, so that the aluminum layers, i.e.
  • the metal-containing barrier layer and the metal-containing thin layer are on the outside.
  • the film is preferably arranged on a base body so that the metal-containing barrier layer faces the outer wall.
  • the metal-containing thin layer then faces outwards and at the same time acts as an adhesive layer against the material of the secondary sealant.
  • the metal-containing thin film not only fulfils a barrier effect, but also the function of a adhesion promoter.
  • the barrier film can contain a foamed polymer layer to further improve the thermal properties.
  • the spacer according to the invention for insulating glass units according to a second aspect comprises at least one base body co-extruded from a first plastic and a second plastic, comprising a first side wall and a second side wall arranged parallel thereto, a glazing interior wall which connects the side walls to one another, wherein the glazing interior wall has a recess running essentially parallel to the side walls for receiving a pane, an outer wall which is arranged essentially parallel to the glazing interior wall and connects the side walls to one another directly or via connecting walls, cavities which are enclosed by the first side wall or the second side wall, the glazing interior wall, the outer wall and the recess or by the first side wall or the second side wall, the glazing interior wall, the outer wall, the first connecting wall or the second connecting wall and the recess, wherein the base body is designed as a hollow profile formed from the first plastic and the second plastic, which has an alternating arrangement of segments A and segments B, wherein a segment A is formed from the first plastic and a segment B from the second Plastic is
  • the base body of the spacer according to the second aspect preferably has a width of 5 mm to 80 mm, preferably 10 mm to 35 mm, along the glazing interior wall.
  • total thickness of the outer wall of the spacer according to the second aspect is designated according to the invention as D2.
  • total thickness here means the complete cross-section of the outer wall in the height direction Y.
  • the outer wall of the spacer according to the second aspect comprises two first sections, each consisting of a segment B and arranged in the middle between the first side wall or the second side wall and the recess in the transverse direction X of the spacer and over the entire thickness D2 of the outer wall in the height direction Y of the spacer.
  • the arrangement of the first sections according to the invention can ensure good thermal insulation along the outer wall. This is particularly advantageous when using the spacer in an insulating glass unit, since the heat transfer between a first pane and a second pane, between which the outer wall is located, can be significantly reduced or prevented.
  • the first sections are arranged in the middle between the first side wall or the second side wall and the recess in the transverse direction X of the spacer according to the second aspect.
  • a first section extends symmetrically outwards in both directions from a center line that divides the outer wall between the first or second side wall and the recess into two equal parts in the view of the hollow profile.
  • Symmetrical here means that the two sections of the respective first section that extend in the two directions from the center line are approximately the same length.
  • the symmetrical arrangement of the respective first section can ensure that when pressure is exerted on the spacer, the pressure is evenly distributed and that there is no distortion of the shape of the spacer during its manufacturing process.
  • a desiccant can be arranged in each of the cavities of the spacer according to the second aspect.
  • perforations can be made in the glazing interior wall, which create a connection to the inner space between the panes in the insulating glass unit. The perforations in the In the glazing interior wall, desiccant present in the cavities can then absorb moisture from the inner space between the panes.
  • the base body of the spacer according to the second aspect has a recess.
  • This recess runs essentially parallel to the side walls and is suitable for receiving a pane.
  • the bottom of the recess is preferably formed by the outer wall. This achieves the greatest possible depth of the recess and maximizes the area of the side flanks of the recess for stabilizing the pane received in the recess.
  • the bottom of the recess does not adjoin the outer wall and both cavities extend below the recess.
  • the invention further comprises a method for producing a spacer according to the invention, wherein at least
  • the first plastic and the second plastic are co-extruded to form the base body such that this base body is formed as the hollow profile formed from the first plastic and the second plastic, which has the alternating arrangement of segments A and segments B.
  • Step (b) can also be performed before step (a).
  • the invention further comprises an insulating glass unit comprising at least a first pane, a second pane, a spacer according to the invention arranged circumferentially between the first pane and the second pane, wherein the first pane is attached to the first side wall via a primary sealing means, the second pane is attached to the second side wall via a primary sealing means, the spacer separates an inner space between the panes from an outer space between the panes and a secondary sealing means is arranged in the outer space between the panes.
  • a primary sealant is arranged between the first side wall and the first pane and between the second side wall and the second pane.
  • the primary sealant is in contact with the side walls or with a barrier film, which can optionally be attached to the side walls, the optional connecting walls and the outer wall of the base body.
  • the first pane and the second pane are arranged parallel and preferably congruent. The edges of the two panes are therefore flush in the edge area, i.e. they are at the same height.
  • the inner space between the panes is delimited by the first and second panes and the glazing interior wall.
  • the outer space between the panes is defined as the space delimited by the first pane, the second pane and the optional barrier film on the outer wall or the outer wall of the base body.
  • the outer space between the panes is at least partially filled with a secondary sealant.
  • the secondary sealant contributes to the mechanical stability of the insulating glass unit and absorbs some of the climatic loads acting on the edge seal.
  • the primary sealant when a barrier film is present, extends to the areas of the first and second side walls adjacent to the glazing interior wall that are free of the barrier film.
  • the primary sealant thus covers the transition between the base body and the barrier film, so that a particularly good seal of the insulating glass unit is achieved. In this way, the diffusion of moisture into the cavity of the spacer at the point where the barrier film borders the plastic is reduced (less interface diffusion).
  • the secondary sealant is applied along the first pane and the second pane in such a way that a central region of the outer wall is free of secondary sealant.
  • the central region refers to the region arranged centrally in relation to the two outer panes, in contrast to the two outer regions of the outer wall, which are adjacent to the first pane and second pane.
  • this arrangement can be easily produced by applying two strands of secondary sealant to the outer wall in the outer region adjacent to the outer panes.
  • the secondary sealant is applied in such a way that the entire outer space between the panes is completely filled with secondary sealant. This leads to maximum stabilization of the insulating glass unit.
  • the secondary sealant preferably contains polymers or silane-modified polymers, particularly preferably organic polysulfides, silicones, room temperature-crosslinking (RTV) silicone rubber, peroxide-crosslinking silicone rubber and/or addition-crosslinking silicone rubber, polyurethanes and/or butyl rubber. These sealants have a particularly good stabilizing effect.
  • polymers or silane-modified polymers particularly preferably organic polysulfides, silicones, room temperature-crosslinking (RTV) silicone rubber, peroxide-crosslinking silicone rubber and/or addition-crosslinking silicone rubber, polyurethanes and/or butyl rubber.
  • the primary sealant preferably contains a polyisobutylene.
  • the polyisobutylene can be a crosslinking or non-crosslinking polyisobutylene.
  • the first pane and the second pane of the insulating glass unit preferably contain glass, ceramic and/or polymers, particularly preferably quartz glass, borosilicate glass, soda-lime glass, polymethyl methacrylate or polycarbonate.
  • the first pane and the second pane each have a thickness of 2 mm to 50 mm, preferably 3 mm to 16 mm, whereby both panes can also have different thicknesses.
  • the spacer frame consists of one or more spacers according to the invention.
  • it can be one spacer according to the invention that is bent into a complete frame. It can also be several spacers according to the invention that are linked together via one or more connectors.
  • the connectors can be designed as longitudinal connectors or corner connectors. Such corner connectors can be designed, for example, as a plastic molded part with a seal in which two spacers provided with a fermentation cut collide.
  • the spacer according to the invention can, for example, be bent in a heated state.
  • the insulating glass unit comprises more than two panes.
  • the spacer can, for example, contain recesses in which at least one further pane is arranged.
  • panes could also be designed as a laminated glass pane.
  • the invention further comprises a method for producing an insulating glass unit according to the invention, wherein at least
  • the insulating glass unit is manufactured mechanically on double glazing systems known to those skilled in the art.
  • a spacer frame comprising the spacer according to the invention is provided.
  • the spacer frame is manufactured by welding, gluing and/or using a connector.
  • a first pane and a second pane are provided and the spacer frame is fixed between the first and second panes using a primary sealant.
  • the spacer frame is placed on the first pane with the first side wall of the spacer and fixed using the primary sealant.
  • the second pane is then placed on the second side wall of the spacer, congruent with the first pane, and is also fixed using the primary sealant, and the pane arrangement is pressed.
  • the outer space between the panes is at least partially filled with a secondary sealant.
  • the method according to the invention thus enables the simple and cost-effective manufacture of an insulating glass unit.
  • No special new machines are required, since thanks to the structure of the spacer according to the invention, conventional machines can be used, as are already available for spacers known from the prior art.
  • the provision of the first pane and the second pane can also take place before the provision of the spacer frame.
  • the base body of the spacer is manufactured by co-extrusion of a first plastic with a second plastic.
  • the invention further comprises the use of the insulating glass unit according to the invention as interior glazing of a building, exterior glazing of a building and/or facade glazing.
  • Fig. 1 shows a cross section of an embodiment of a spacer according to the invention
  • Fig. 2 shows a cross section of another embodiment of a spacer I according to the invention
  • Fig. 4 shows a cross section of another embodiment of a spacer I according to the invention
  • Fig. 5 shows a cross section of an embodiment of a spacer according to the invention
  • Fig. 6 is a perspective view of a cross section of an embodiment of a spacer I according to the invention.
  • Fig. 7. a cross-section of an embodiment of an insulating glass unit III according to the invention.
  • Fig. 8 is a flow diagram of a process according to the invention.
  • Fig. 1 shows a cross section of an embodiment of a spacer I according to the invention.
  • the spacer I comprises a base body 1 which is formed from a first side wall 2.1, a second side wall 2.2 arranged parallel thereto, a glazing interior wall 3, an outer wall 4, a first connecting wall 6.1, a second connecting wall 6.2 and a cavity 5.
  • the first side wall 2.1 and the second side wall 2.2 are connected to one another via the glazing interior wall 3.
  • the outer wall 4 is arranged essentially parallel to the glazing interior wall 3 and is connected to the first side wall 2.1 via the first connecting wall 6.1 and to the second side wall 2.2 via the second connecting wall 6.2.
  • the first connecting wall 6.1 and the second connecting wall 6.2 are optional; alternatively, the first side wall 2.1 and the second side wall 2.2 can also be connected directly to the outer wall 4.
  • the cavity 5 is enclosed by the first side wall 2.1, the glazing interior wall 3, the second side wall 2.2, the first connecting wall 6.1, the second connecting wall 6.2 and the outer wall 4.
  • the connecting walls 6.1, 6.2 preferably run at an angle a (alpha) of 30° to 60° to the outer wall 4.
  • the angled shape of the first connecting wall 6.1 and the second connecting wall 6.2 improves the stability of the base body and enables better bonding and insulation of the spacer I according to the invention.
  • the outer wall 4 comprises a first section 9 which consists of a segment B and is arranged in the middle of the outer wall 4 in the transverse direction X of the spacer I and over the entire thickness D1 of the outer wall 4 in a height direction Y of the spacer I.
  • the first side wall 2.1 comprises a second section 10 consisting of a segment B and the second side wall 2.2 comprises a third section 11 consisting of a segment B.
  • the transition of the first connecting wall 6.1 and the outer wall 4 comprises a fifth section 13, which consists of a segment A, and the transition of the second Connecting wall 6.2 and the outer wall 4 comprises a sixth section 14 which consists of a segment A.
  • the cavity 5 can accommodate a desiccant (not shown in Fig. 1).
  • Perforations (not shown in Fig. 1) can be provided in the glazing interior wall 3, which create a connection to the inner space between the panes in the insulating glass unit.
  • the desiccant can then absorb moisture from the inner space between the panes via the perforations in the glazing interior wall 3.
  • the base body 1 of the embodiment of a spacer I according to the invention shown in Fig. 1 is produced by co-extrusion of the first plastic 7 and the second plastic 8.
  • Fig. 2 shows a cross section of a further embodiment of a spacer I according to the invention.
  • the embodiment shown in Fig. 2 differs from that shown in Fig. 1 only in that the glazing interior wall 3 comprises a fourth section 12 which consists of a segment B.
  • Fig. 3 a cross-section of a further embodiment of a spacer I according to the invention is shown.
  • the embodiment shown in Fig. 3 differs from that shown in Fig. 2 only in that the transition of the side wall 2.1 and the glazing interior wall 3 does not comprise a seventh section 15, which consists of a segment A, and the transition of the side wall 2.2 and the glazing interior wall
  • the second section 10 extends further to the transition of the side wall 2.1 and the glazing interior wall 3 and the third section 11 extends further to the transition of the side wall 2.2 and the glazing interior wall 3.
  • the side wall 2.1 consists of the second section 10 and the side wall 2.2 consists of the third section 11.
  • Fig. 4 shows a cross section of a further embodiment of a spacer I according to the invention.
  • the embodiment shown in Fig. 4 differs from that shown in Fig. 2 only in that a layer 18 made of the second plastic 8 is arranged on the entire surface 17 of the glazing interior wall 3 on the outside of the cavity 5.
  • Fig. 5 shows a cross-section of an embodiment of a spacer II according to the invention.
  • the spacer II shown in Fig. 5 corresponds essentially to the spacer I shown in Fig. 1, but the base body 1 in the glazing interior wall 3 has a recess 19 running essentially parallel to the side walls 2.1 and 2.2 for receiving a pane and two cavities 5.1 and 5.2.
  • the bottom of the recess 19 is formed in the embodiment by the outer wall 4. However, it is also possible that the bottom of the recess 19 is not connected to the outer wall
  • the wall thickness of the base body 1 is, for example, 1 mm.
  • the wall thickness also corresponds to the thickness D2 in this embodiment.
  • the width b of the base body 1 along the glazing interior surface 3 is, for example, 25 mm.
  • the total height g of the base body 1 is, for example, 6.5 mm.
  • the base body 1 of the embodiment of a spacer II according to the invention shown in Fig. 5 is produced by co-extrusion of the first plastic 7 and the second plastic 8.
  • Fig. 6 shows a perspective view of a cross section of an embodiment of a spacer I according to the invention.
  • the spacer I shown in Fig. 6 corresponds to the spacer I shown in Fig. 1. Due to the perspective view, the perforations 26 in the glazing interior wall 3 can be seen in Fig. 6.
  • Fig. 7 shows a cross section of the insulating glass unit III according to the invention with a spacer I arranged between a first pane 20 and a second pane 21, which essentially corresponds to that described in Fig. 1, wherein the spacer I used in the insulating glass unit III in Fig. 7 has a barrier film 28.
  • the barrier film 28 is arranged on the outer wall 4, the first connecting wall 6.1 and the second connecting wall 6.2 and on part of the side walls 2.1 and 2.2.
  • the first pane 20, the second pane 21 and the barrier film 28 delimit the outer space between the panes 24 of the insulating glass unit III.
  • the edge 29 of the first pane 20 and the edge 30 of the second pane 21 are arranged at the same height.
  • the secondary sealing agent 25 which contains a silicone, for example, is arranged in the outer space between the panes 24. Silicones absorb the forces acting on the edge bond particularly well and thus contribute to a high stability of the insulating glass unit III.
  • the barrier film 28, together with the secondary sealant 25, insulates the inner space between the panes 23 and reduces the heat transfer from the base body 1 into the inner space between the panes 23.
  • the barrier film 28 can be attached to the base body 1 using PUR hot melt adhesive, for example.
  • a primary sealant 22 is preferably arranged between the side walls 2.1 and 2.2 and the panes 20, 21. This contains butyl, for example. The primary sealant 22 overlaps with the barrier film 28 to prevent possible interface diffusion.
  • the barrier film 28 comprises, for example, a metal-containing barrier layer made of 7 pm thick aluminum, a polymer layer made of 12 pm thick polyethylene terephthalate (PET) and a metal-containing thin layer made of 10 nm thick aluminum.
  • PET polyethylene terephthalate
  • the film layers are arranged, for example, so that the aluminum layers, i.e. the metal-containing barrier layer and the metal-containing thin layer, are on the outside.
  • the film is arranged on the base body 1 so that the metal-containing barrier layer faces the outer wall 4.
  • the metal-containing thin layer then faces outwards and at the same time acts as an adhesive layer against the material of the secondary sealant.
  • the metal-containing thin layer therefore not only has a barrier effect, but also acts as an adhesion promoter.

Landscapes

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

Abstract

L'invention concerne un espaceur (I) pour des unités de verre isolées, qui comprend au moins une partie principale (1) coextrudée à partir d'une première matière plastique (7) et d'une seconde matière plastique (8), comprenant : une première paroi latérale (2.1) et une seconde paroi latérale (2.2) disposée parallèlement à celle-ci ; une paroi intérieure de vitrage (3) qui relie les parois latérales (2.1, 2.2) l'une à l'autre ; une paroi extérieure (4) qui est disposée sensiblement parallèlement à la paroi intérieure de vitrage (3) et relie les parois latérales (2.1, 2.2) l'une à l'autre directement ou via des parois de liaison (6.1, 6.2) ; une cavité (5) qui est entourée par les parois latérales (2.1, 2.2), la paroi intérieure de vitrage (3), et la paroi extérieure (4) ou par les parois latérales (2.1, 2.2), la paroi intérieure de vitrage (3), la paroi extérieure (4) et les parois de liaison (6.1, 6.2) ; la partie principale (1) étant conçue sous la forme d'un profil creux formé à partir de la première matière plastique (7) et de la seconde matière plastique (8) et ayant un agencement alterné de segments A et de segments B. Un segment A est formé à partir de la première matière plastique (7) et un segment B est formé à partir de la seconde matière plastique (8) et les segments A et B s'étendent le long d'une direction longitudinale (Z) de l'espaceur (I) et viennent en butée l'un contre l'autre dans la direction longitudinale (Z), la paroi extérieure (4) comprend une première section (9), qui est constituée d'un segment B et est disposée au centre de la paroi extérieure (4) dans une direction transversale (X) de l'espaceur (I), qui est perpendiculaire à la direction longitudinale (Z) de l'espaceur (I), et sur toute l'épaisseur (D1) de la paroi extérieure (4) dans une direction verticale (Y) de l'espaceur (I), qui est perpendiculaire à la direction longitudinale (Z) de l'espaceur (I), la première paroi latérale (2.1) comprend une deuxième section (10), qui est constituée d'un segment B, la seconde paroi latérale (2.2) comprend une troisième section (11), qui est constituée d'un segment B, et la seconde matière plastique (8) a une conductivité thermique inférieure à celle de la première matière plastique (7).
PCT/EP2024/061756 2023-05-31 2024-04-29 Espaceur segmenté pour unités de verre isolées Pending WO2024245666A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23176255.0 2023-05-31
EP23176255 2023-05-31

Publications (1)

Publication Number Publication Date
WO2024245666A1 true WO2024245666A1 (fr) 2024-12-05

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Application Number Title Priority Date Filing Date
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852280A1 (fr) 1996-12-20 1998-07-08 Saint-Gobain Vitrage Suisse AG Entretoise pour vitrage multiple
DE19807454A1 (de) 1998-02-21 1999-08-26 Ensinger Abstandhalter
EP1055046B2 (fr) 1998-02-11 2007-09-26 Technoform Caprano + Brunnhofer oHG Profile d'ecartement pour unite de plaques isolantes
DE102011009359A1 (de) 2011-01-25 2012-07-26 Technoform Glass Insulation Holding Gmbh Abstandshalterprofil und Isolierscheibeneinheit mit einem solchen Abstandshalterprofil
WO2013104507A1 (fr) 2012-01-13 2013-07-18 Saint-Gobain Glass France Espaceur pour vitrages isolants
WO2015043848A1 (fr) 2013-09-30 2015-04-02 Saint-Gobain Glass France Entretoise pour vitrages isolants
EP3241972A1 (fr) 2016-05-04 2017-11-08 Technoform Glass Insulation Holding GmbH Espaceur destiné à une unité de vitrage isolant
WO2021009176A1 (fr) 2019-07-17 2021-01-21 Saint-Gobain Glass France Intercalaires pour unités de vitrage isolant

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852280A1 (fr) 1996-12-20 1998-07-08 Saint-Gobain Vitrage Suisse AG Entretoise pour vitrage multiple
EP1055046B2 (fr) 1998-02-11 2007-09-26 Technoform Caprano + Brunnhofer oHG Profile d'ecartement pour unite de plaques isolantes
DE19807454A1 (de) 1998-02-21 1999-08-26 Ensinger Abstandhalter
DE102011009359A1 (de) 2011-01-25 2012-07-26 Technoform Glass Insulation Holding Gmbh Abstandshalterprofil und Isolierscheibeneinheit mit einem solchen Abstandshalterprofil
WO2013104507A1 (fr) 2012-01-13 2013-07-18 Saint-Gobain Glass France Espaceur pour vitrages isolants
WO2015043848A1 (fr) 2013-09-30 2015-04-02 Saint-Gobain Glass France Entretoise pour vitrages isolants
EP3241972A1 (fr) 2016-05-04 2017-11-08 Technoform Glass Insulation Holding GmbH Espaceur destiné à une unité de vitrage isolant
WO2021009176A1 (fr) 2019-07-17 2021-01-21 Saint-Gobain Glass France Intercalaires pour unités de vitrage isolant

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