EP3728776A1 - Espaceur pour vitrage isolant - Google Patents
Espaceur pour vitrage isolantInfo
- Publication number
- EP3728776A1 EP3728776A1 EP18822384.6A EP18822384A EP3728776A1 EP 3728776 A1 EP3728776 A1 EP 3728776A1 EP 18822384 A EP18822384 A EP 18822384A EP 3728776 A1 EP3728776 A1 EP 3728776A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spacer
- main
- main connecting
- connecting portion
- mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- E06B3/66323—Section members positioned at the edges of the glazing unit comprising an interruption of the heat flow in a direction perpendicular to the unit
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/663—Elements for spacing panes
- E06B3/66309—Section members positioned at the edges of the glazing unit
- E06B3/66314—Section members positioned at the edges of the glazing unit of tubular shape
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/663—Elements for spacing panes
- E06B3/66309—Section members positioned at the edges of the glazing unit
- E06B3/66366—Section members positioned at the edges of the glazing unit specially adapted for units comprising more than two panes or for attaching intermediate sheets
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/673—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
Definitions
- the present disclosure relates to a spacer for insulating glazing, and an insulating glazing unit comprising a spacer frame formed by at least one such spacer.
- an insulating glazing unit can be obtained by joining a rigid spacer frame to the periphery of two glass sheets by means of sealing beads and by applying an external sealing barrier on the outer periphery of the spacer frame between the two layers. glass sheets.
- the spacer frame delimits an internal cavity between the glass sheets, said cavity forming an insulating blade of air or a gas that is less heat-conductive than air, for example argon, which makes it possible to limit the losses. due to conduction or convection.
- the spacer frame is conventionally manufactured either by successive bends of a straight spacer, or by angular assembly at their ends of straight spacers, so as to obtain for example a rectangular frame.
- Metal has long been preferred in the manufacture of spacers. Its coefficient of thermal expansion being close to that of glass, the stresses applied to the sealing beads in the event of thermal variations inside and / or outside the building are limited, so that the adhesion of the Spacer to the glass remains assured. The thermal insulation properties of the glazing are thus preserved over time.
- a disadvantage of the metal remains its high thermal conductivity, which leads to losses of heat and energy, as well as aesthetic problems related to condensation, for example when the outside temperatures are low and the inner glass sheet is cooled down. near the spacer. To make the spacers more thermally insulating, it has been envisaged to make them out of plastic.
- Patent Application WO2013 / 104507 discloses, for example, a spacer, known commercially under the name of "swisspacer Ultimate", formed of a main body made of reinforced polymer material, and a sheet with insulating properties, comprising a metal layer of thickness between 10 nm and 1500 nm protected by at least two layers of polymer material, covering the bottom wall of the body.
- Document US Pat. No. 5,630,306 also discloses a hybrid spacer formed of two lateral metal branches and at least one main synthetic resin bonding part. connecting said branches to their upper end. But the manufacture of the spacer requires here to heat the metal branches to reach the melting temperature of the resin, and then to deposit the resin on the heated branches in the form of an extruded strip. This technique requires the use of a large thickness of resin, greater than 1 mm, which does not provide satisfactory thermal insulation. To improve the thermal properties of the spacer, it is proposed to truncate the main link portion at its lateral ends, but this solution is too complex to implement. According to an easier variant of manufacture, the main connecting part can also be glued to the metal branches. But in this case the risk of separation, too important, makes the system unsustainable.
- An object of the present invention is to provide a spacer giving the glazing good thermal performance, in a sustainable manner, while remaining easy to manufacture.
- an insulating glazing spacer extending in a longitudinal direction and comprising first and second main metal fastening portions facing each other in a lateral direction and defining respectively a first and a second main fixing faces intended to be each secured to a glass sheet of the insulating glazing unit by adhesive bonding means, the first and second main fastening parts being structurally bonded to one another by at least a part main link extending in said lateral direction and essentially made of plastic material, the spacer having at least two mounting grooves for holding the lateral ends of said at least one main connecting part, said grooves being arranged so as to keep free at least one intermediate zone of the main connecting part.
- connecting part means, in the present application, a structural element, which gives the spacer a substantial portion of its rigidity.
- the upper and lower adjectives are defined with respect to a transverse direction, orthogonal to the longitudinal and lateral directions.
- the upper elements are those oriented towards or closer to the internal cavity of the glazing, in the mounted position of the spacer.
- the lower elements are further away from the internal cavity of the glazing, in the mounted position of the spacer.
- a width is defined in the lateral direction, a length in the longitudinal direction, and a thickness in the transverse direction.
- the main connecting part is generally located on the lower side of the spacer, that is to say on its side intended to be opposite to the internal cavity of the insulating glazing unit. It generally forms a lower wall of the spacer. Essentially made of plastic, it acts as an insulator, limiting the heat exchange between the outer glass sheet and the inner glass sheet. It should be noted that essentially by plastic means here that at least 99% of the total thickness of the main connecting portion is made of plastic.
- the spacer according to the invention makes it possible to sustainably preserve the tightness of the glazing:
- the main fixing faces being formed by the main metal fastening parts, whose thermal expansion coefficient is close to that of the glass, the fixing means by bonding between the spacer and the glass sheets are not very required in case of variations temperature.
- the main link part also has a certain flexibility which allows it to absorb a part of the deformations of the spacer related to climatic loads and wind loads. The risks of separation of the spacer and leakage are therefore reduced, and the energy performance of the glazing are guaranteed longer.
- the mounting grooves also allow, by a mechanically simple system, to avoid the recess of the main connecting part in case of deformation of one spacer.
- Maintaining the main connecting part by the mounting grooves also allows to freely choose the thickness of this part.
- it results from a compromise between the thermal conductivity of the spacer, all the higher as the main connecting part is not very thick, and a sufficient stiffness of the spacer, in particular the thickness and the thickness of the spacer. length of the main connecting part and the width of its intermediate area.
- the main connecting portion typically has a thermal conductivity of between 0.1 and 0.5 Wm -1 .K -1 .
- the plastic chosen to constitute the main connecting part preferably has a tensile modulus of between 500 and 5000 MPa and a flexural strength of between 50 and 120 MPa.
- Another advantage of the spacer according to the present invention is to be able to be folded cold, because of the flexibility of the main connecting part, making the manufacture of the spacer frame easier.
- first and second main attachment parts are linked only by one or more element (s) each having at least one intermediate area forming thermal insulation barrier.
- the first and the second main attachment parts are thus thermally insulated from each other.
- the one or more element (s) comprise at least one main linking part as defined above.
- the one or more element (s) may also include at least one complementary link part and / or at least one cache, as will be explained in the following.
- the first and second main attachment parts are for example obtained by profiling.
- the mounting grooves are formed by folds, and each lateral end of the main connecting portion is held between the thicknesses of a fold.
- the first and second main attachment parts each comprise a mounting groove.
- each mounting groove is open toward the intermediate area of the main connecting portion (i.e. inwards).
- the main connecting portion may then take the form of a flat sheet whose ends are simply housed in the two mounting folds facing one another.
- each mounting groove is open in a direction opposite to the intermediate zone of the main connecting part (ie towards the outside), and each groove receives, between its thicknesses, a flap resulting from the folding of a lateral portion of the main connecting part.
- At least one seal in particular a butyl bead, is provided inside each mounting groove, for sealing between a wall of the mounting groove and the main connecting part.
- the first and second main attachment parts each comprise at least one longitudinal groove and said at least one gasket is mounted projecting within said longitudinal groove and in contact with the main connecting portion.
- the main connecting portion is further maintained in said mounting grooves by gluing means.
- the mounting grooves are formed on laterally extending support portions between which the at least one main connecting portion extends.
- These laterally extending support portions are formed by the first and second main attachment portions and are therefore metallic.
- They may comprise, in addition, one or more intermediate elements, also generally metallic, arranged between said first and second main attachment parts, as described below.
- the total distance, measured laterally, between these laterally extending support portions is between 10 and 80% of the total width of the spacer.
- the total width of the at least one intermediate zone will generally be between 10 and 80% of the total width of the spacer.
- the total width of the at least one intercalary area may advantageously represent less than
- total width of the at least one intermediate zone is meant, where appropriate, the sum of the widths of the intermediate areas of all the main connecting parts located in the same plane or substantially in the same plane.
- the total width of the spacer is generally between 6 and 40 mm, preferably between 6 and 30 mm.
- the minimum total width of the at least one spacer zone is preferably equal to the total width of the spacer minus 2mm.
- the total thickness of the main connecting portion is between 0.1 and 5 mm.
- the main bonding portion comprises at least one plastic layer and a moisture barrier coating, including an aluminum-based coating.
- the coating preferably forms a surface layer of the main bonding portion. Its ends are in contact with metal fixing parts, so as to ensure the continuity of the seal, on either side of the spacer, between the first and the second main attachment parts.
- the thickness of the coating is between 0.001 and 2 micrometers.
- the coating that is fragile forms a surface layer of the main connecting portion facing inwardly of the spacer.
- the first and second main attachment parts and the at least one main connecting part define at least one housing housing a desiccant material.
- This desiccant material is advantageously integrated into a shaped assembly in the form of a bead, especially a bead of glue or putty.
- the spacer further comprises at least one cover on its side intended to be oriented towards the internal cavity of the insulating glazing unit.
- the cover forms an upper wall of the spacer, and is therefore generally the only visible part of the spacer once the glazing is mounted. It usually fulfills an essentially aesthetic function.
- the cover is generally attached to tabs or folds of the main attachment parts and / or metal fastening parts.
- the cover may be made of any suitable material, preferably of low conductivity, in particular of thermal conductivity of between 0.1 and 0.5 Wm -1 .K -1 .
- the cover may especially be in the form of a sheet, possibly printed, polyethylene terephthalate (PET), polypropylene (PP), polyvinyl chloride (PVC), Polyimide (PI), polytetrafluoroethylene (PTFE), or in wood, leather, plastic composite material / wood, or any other suitable material, in particular unable to cause the formation of undesirable particles within the inner cavity of the glazing and preferably resistant to UV.
- PET polyethylene terephthalate
- PP polypropylene
- PVC polyvinyl chloride
- PI polyimide
- PTFE polytetrafluoroethylene
- the spacer may further comprise at least one complementary connecting part, consisting essentially of plastic, extending parallel to the main connecting part. It is generally arranged at a distance from the main connecting part on the one hand and from the upper end of the spacer on the other (and therefore of the cover, if appropriate), in the transverse direction.
- the complementary bonding portion is attached to the first and second main attachment portions, and forms an active structural member of the spacer, imparting some of its strength and stiffness thereto.
- the combination of at least two connecting parts, parallel, increases the stiffness of the spacer, and can be implemented in particular for facade glazing, the mechanical strength must be excellent.
- the spacer comprises at least one transverse notch extending in the lateral direction, said notch having a V-shaped profile whose tip is defined in a plane intersecting the main connecting part.
- the spacer further comprises at least one receiving portion of an additional glass sheet disposed between the first and second main attachment portions.
- the receiving part is formed by a metal section defining a reception groove, in particular U-section or V, extending in the longitudinal direction.
- the first and second main attachment parts are structurally connected to one another by a succession of at least two main connecting parts extending in the lateral direction, consisting essentially of plastic material, and connected to one another by means of less an intermediate element, in particular metal.
- each intermediate element comprises at least two mounting grooves, each mounting groove now, between its thicknesses, the lateral extremity of a principal part of connection.
- the present disclosure also relates to a spacer frame for insulating glazing, characterized in that it is formed by at least one spacer as defined above.
- the present disclosure also relates to an insulating glazing unit comprising at least two substantially parallel glass sheets, spaced apart by at least one air or gas blade forming an internal cavity of the glazing unit, and a spacer frame as defined above, arranged at the periphery. glass sheets and now spaced the two sheets of glass, bonding fixing means fixing the spacer frame to each sheet of glass.
- the at least one main connecting part of the spacer is then located on the side of the spacer opposite to the internal cavity of the glazing.
- FIG. 1 illustrates a spacer according to a first embodiment, mounted between two glass sheets of an insulating glazing unit
- FIG. 2 illustrates a folding notch of a spacer according to FIG. 1;
- FIG. 5 illustrates a spacer according to a second embodiment
- FIG. 6 illustrates a spacer according to a third embodiment
- FIG. 7 illustrates a spacer according to a fourth embodiment, particularly suitable for glazing facades
- FIG. 8 illustrates a spacer according to a fifth embodiment, adapted to be mounted in a triple insulating glass
- FIG. 9 illustrates a spacer according to a sixth embodiment
- FIG. 10 illustrates a sample used in thermal conductivity tests.
- FIG. 1 shows a section of the periphery of an insulating glazing unit 1 according to the invention, here a double glazing, comprising an outer glass sheet 2a, intended for example to be turned towards the outside of a building, a sheet of inner glass 2b, parallel to the outer glass sheet 2a, and a spacer frame 3 extending continuously along the edge of the first and second glass sheets 2a, 2b, a sealed internal cavity 4 being delimited by the spacer frame between the two glass sheets 2a, 2b.
- a double glazing comprising an outer glass sheet 2a, intended for example to be turned towards the outside of a building, a sheet of inner glass 2b, parallel to the outer glass sheet 2a, and a spacer frame 3 extending continuously along the edge of the first and second glass sheets 2a, 2b, a sealed internal cavity 4 being delimited by the spacer frame between the two glass sheets 2a, 2b.
- the spacer frame 3 can be manufactured by successive folding of a straight spacer, or by angular assembly at their ends of straight spacers, so as to obtain a typically rectangular frame.
- the spacer extends, at least in parts, in a longitudinal direction parallel to an edge of the glazing.
- the longitudinal direction is represented by the X axis.
- the spacer 110 of FIG. 1 comprises a first and a second main attachment part 112a, 112b in against each other in a direction Y said lateral direction of the spacer 110.
- These two main attachment parts 112a, 112b are for example made by profiling using rollers (rollforming, English) metal strips, especially aluminum or more preferably steel. Their thickness el is typically between 0.15 and 1 mm.
- the first main attachment part 112a defines a first main attachment face 114a, of height h1, typically between 5 and 30 mm, intended to be secured to the outer glass sheet 2a, and the second main attachment part 112b defines a second main fixing face 114b, of similar dimensions, intended to be secured to the inner glass sheet 2b.
- Bonding is done, in a manner known per se, by at least one sealing bead respectively 5a, 5b bonding means, for example based on butyl.
- a transverse direction Z of the spacer is defined as a direction orthogonal to the said longitudinal X and Y directions.
- the transverse direction Z is generally parallel to the main attachment faces 114a, 114b of the spacer 110.
- the adjectives upper and lower used in the following are defined with respect to this transverse direction Z.
- the upper elements are those oriented towards or closer to the internal cavity 4 of the glazing, in the assembled position of the spacer 110.
- the lower elements are further away from the internal cavity 4 of the glazing, in the mounted position of the spacer.
- the first and second main attachment portions 112a, 112b are structurally interconnected by a main connecting portion 120 extending in the lateral direction Y.
- this main connecting part 120 forms a bottom wall of the spacer 110.
- the desiccant material 132 has the function of absorbing moisture that may be inside the glazing, especially just after mounting said glazing. It may for example be in the form of a silica gel.
- the desiccant material may be conditioned in the form of a structure (that is to say a self-supporting element) of finite dimensions.
- the desiccant material 132 is mixed with a binder to form a sintered assembly 134 in the form of a bead, adhering to the inner face of one of the main attachment portions 112a, 112b (the second, in FIG. for example by gluing.
- the structure 134 is not in contact with the other main attachment part, so that it does not affect the thermal conductivity of the spacer.
- the thermal performance of the spacer is thus improved.
- the spacer 110 does not need to be closed at its upper end to contain the desiccant material, the establishment of the desiccant material can be made before mounting the spacer 110 on the glass sheets 2a, 2b, and the manufacture of the glazing is clearly facilitated.
- the structure 134 is arranged so that it is not in contact with the transverse part either.
- the moisture absorbing structure 134 may comprise a plurality of absorbent units which are preferably spaced in the longitudinal direction by interrupt zones. These interruption zones are preferably at least 2 mm to ensure efficient thermal separation.
- the main connecting portion 120 located on the lower side of the spacer, must provide a good seal with the first and second main attachment portions 112a, 112b, to prevent air from entering the interior of the glazing . For this, it is held at its ends 121, 122 in mounting grooves, here in the form of folds, formed on the first and second main attachment portions 112a, 112b respectively.
- the first main attachment part 112 comprises:
- a lower support portion 142a extending laterally, folded accordionally so as to form at least one mounting fold, here open towards the inside
- an upper support portion in the form of tongue 143a, also directed laterally inwardly of the spacer, width 110 typically between 2 and 7 mm, preferably between 2 and 5 mm, in particular equal to 2.3 mm.
- the lower support portion 142a more particularly comprises:
- a first thickness 144a extending laterally inwardly of the spacer 110 (in the direction of the main fixing portion 112b situated opposite) over a width
- a second thickness 145a (hereinafter referred to as a fixed mounting thickness) of width 12 equal to 11, folded against the first thickness 144a and thus parallel to the latter, forming with the first thickness 144a a first fold 150a open towards the outside and then
- a third thickness 146a (hereinafter referred to as a movable mounting thickness) of width 13 equal to 11 and 12, forming with the second thickness 145a a second ply 152a - said mounting ply - open towards the inside and adapted to pass a spaced position where it forms a non-zero angle with the second thickness 145a to a folded position in which it is substantially parallel to the second thickness 145a.
- the second main attachment portion 112b includes a transverse portion 141b forming the second main attachment face 114b, a lower support portion 142b abutting said transverse portion 141b, and defining an open mounting fold 152b toward the interior, and an upper support portion 143b also directed inwardly.
- the two mounting plies 152a, 152b are thus open towards each other, and placed facing each other in the lateral direction Y, so as to receive the lateral edges 121, 122 of the main connecting part 120, here in the form of a flat sheet.
- the main connecting part is held by a mounting fold 152a, 152b, at each of its two ends, over a width 14 of at least 3mm and at most
- the spacing 16 between the mounting folds 152a, 152b makes it possible to leave a free intermediate area 123 of the main connecting part, here of width 15.
- the intermediate zone 123 forms a thermal insulation barrier between the first and second main attachment portions 112a, 112b.
- the main connecting part 120 is made of a thermal insulating material. According to the invention, it is essentially made of plastic material.
- the main connecting portion 120 is formed of two superimposed PET layers 125, 126, coated with a moisture barrier coating 127, based on aluminum (in the figure, the proportions are not respected for the sake of clarity).
- the main linking part 120 may comprise a number of different plastic layers, for example a single layer, or more than two layers, or layers of different thicknesses and / or in different materials.
- the total thickness e2 of the main connecting portion 120 is typically between 0.1 and 5 mm.
- the coating 127 forms a surface layer of the connecting portion, whose function is to create a seal with the first and second main fastening parts, metal, with which it is in contact.
- the coating 127 is preferably the upper face of the main connecting portion 120 (ie it is directed towards the interior of the spacer 110), so as to prevent its deterioration due to external aggression.
- the desiccant material 132 generally has the function of primarily absorb moisture from the plastic forming the spacer.
- the coating oriented towards the interior of the housing 130, reduces the moisture to be absorbed by the desiccant immediately after assembly, and thus increases the absorption time of the desiccant material in use of the glazing.
- the thickness e 3 of the moisture barrier coating is between 0.001 and 2 micrometers. This thickness makes negligible the influence of the metal which constitutes it on the thermal conductivity of the main connecting part 120.
- the main connecting part 120 is positioned between the first and the second main attachment parts 112a, 112b, with each of its lateral edges 121, 122 positioned against a fixed thickness 145a,
- each mounting fold 152a, 152b is spaced from each other. Then each movable thickness 146a, 146b is folded towards the fixed thickness 145a, 145b of the same fold. The fixed and movable thicknesses of each mounting fold 152a, 152b are finally substantially parallel, clamping together the corresponding lateral edge 121, 122 of the main connecting portion 120.
- each lateral edge 121, 122 of the main connecting part may also be fixed to a thickness of the mounting fold 152a, 152b by gluing, here to the moving thickness
- the main fixing part advantageously has surface irregularities (not shown) on the fold portion intended to receive the adhesive. These surface irregularities are for example made by scraping the sheet, before or after profiling.
- the spacer further comprises a cover 160, parallel to the main connection portion 120, and forming an upper wall of the spacer 110.
- the cover 160 has an essentially aesthetic function. It is the only visible part of the spacer 110 once the glazing is mounted.
- the cover 160 consists of a PET sheet, of thickness e4 equal to 0.2 mm, bonded by one of its lateral ends 161 to an upper tongue (for example 143a) of one among the first and second main attachment portions 112a, 112b.
- it will avoid sticking the two ends 161, 162 of the cover 160, so as to maintain good flexibility of the spacer, useful in cases of deformation related to external thermal variations.
- the cover can also be securely fixed on both sides to the first and second fixing parts, in particular by gluing.
- the cover can be provided with one or more openings allowing the migration of water vapor to the Absorbent moisture structure 134.
- the cover could also be made of any material different from PET whose thermal conductivity is sufficiently low (for example between 0.1 and 0.5 Wm -1 .K -1 ). It can thus be produced, in particular in the form of an optionally printed sheet, made of polypropylene
- PP polyvinyl chloride
- PVC polyvinyl chloride
- PI polyimide
- PTFE polytetrafluoroethylene
- wood leather, plastic composite material / wood, or any other suitable material, preferably UV resistant.
- a spacer frame 3 is advantageously manufactured by successive bends of a straight spacer 110. This technique is preferred to a manufacture by abutment of several straight spacers using connectors, because it limits the number of parts placed in artwork .
- the spacer 110 is provided with at least one through-notch 170, with a constant V-shaped profile whose two facing edges 171, 172 form an angle of 90 ° between them. It is understood that for the manufacture of a rectangular glazing unit, the spacer will comprise three grooves 170, each intended to form a wedge of the spacer frame 3. The two ends of the spacer 110 will be joined, at the fourth corner, by a connector of known type (not shown).
- the point of the V of the notch 170 is advantageously defined in a plane intersecting the main connecting part 120.
- the main connecting portion 120 is stripped on its upper part: the main attachment parts are cut, as shown in Figure 2.
- FIGS. 3 and 4 The folding operation is illustrated in FIGS. 3 and 4.
- the spacer 110 is folded so that the edges 171, 172 of the notch are brought closer together to come into contact with each other. Folding can be done cold.
- a weld line 174 is formed at the junction of the edges 171, 172 of the notch 170, to restore the tightness of the first and second main attachment portions 112a, 112b.
- Figure 1 illustrates the spacer 110 in the mounted position.
- the spacer 110 is secured to the two glass sheets by its main attachment faces, using sealing beads 5a, 5b, in particular based on butyl.
- An outer sealing barrier is further applied to the outer periphery of the spacer frame between the glass sheets 2a, 2b.
- the sealing barrier may not be continuous over the entire width of the spacer: it then has at least one interruption zone in the lateral direction Y. It may thus be sufficient that, on each side , the sealing barrier is deposited in the form of a strip 6a, 6b respectively connecting the glass sheet 2a, 2b and the intermediate zone 123 of the main connecting part 120, so as to ensure sealing at the points of the leakage, that is to say: between the main attachment part 112a, respectively 112b and the glass sheet 2a, respectively 2b and between the main connecting portion 120 and the main attachment portion 112a, respectively 112b.
- the material forming the sealing barrier is conductive, this arrangement makes it possible to further limit the thermal conductivity of the spacer.
- the distance 16, measured laterally, between the two lateral parts 142a, 142b of the first and second main connecting parts is at least equal to 70% of the total width 17 of the spacer.
- This distance corresponds here to the width 15 of the intermediate zone 123. According to one variant, this distance can be decreased, so as to increase the rigidity of the spacer.
- Figure 5 illustrates such a spacer 210, particularly suitable for glazing facade.
- the first and second main attachment portions 212a, 212b have a structure similar to those 112a, 112b of FIG. 1 and each have a lower support portion 242a, 242b, extending laterally, and folded into accordion. They thus form two mounting grooves in the form of mounting folds 252a, 252b, open towards the inside, towards each other.
- the folded lower support portions 242a, 242b are here arranged so that their spacing 16 ', measured in the lateral direction Y, is less than 60% of the total width 17' of the spacer.
- the width 15 'of the intermediate zone 223 of the main connecting portion 220 is also reduced.
- the mounting plies are here recessed, inward, relative to the main fixing faces 214a, 214b. More particularly, the bottom of the mounting folds are shifted inwardly of the spacer 210, with respect to the embodiment of FIG. 1. The total width 18 'of the connection portion 220 is therefore also decreased relative to the embodiment of Figure 1.
- each mounting fold 252a, 252b may be provided with seals 247a, 247b between the moisture barrier coating 227 and the fold thickness located next to 245a, 245b.
- each fixed ply thickness 245a, 245b is provided with longitudinal grooves (here two) 248a, 248b, in which are arranged butyl cords forming seals 247a, 247b.
- FIG. 5 also illustrates an alternative mode of holding the cover 260 on the upper tabs 243a, 243b of the first and second main connecting parts, by elastic casing.
- the cover 260 is folded accordionally at its lateral ends so as to form, at each end, at least one fold 263a, 263b open towards the outside.
- the cover 260 is deformed, on assembly, so as to penetrate each upper tab 243a, 243b in such a fold 263a, 263b.
- the cover 260 is maintained more safely than by simple bonding, especially in case of strong deformation of the spacer due to thermal variations or wind loads.
- Figure 6 illustrates a spacer 310 according to a third embodiment, wherein the mounting grooves 352a, 352b are open in a direction opposite to the spacer area 323 of the main connecting portion 320, ie outwardly.
- each main attachment portion 312a, 312b includes a lower support portion, 342a, 342b, extending laterally, and forming a foldable mounting groove.
- Each support portion 342a, 342b comprises a first thickness 345a, 345b (hereinafter referred to as a fixed mounting thickness) extending laterally inwardly of the spacer 310 over a width 11 '', and a second thickness 346a.
- 346b hereinafter movable mounting thickness of width 12 '' (lower here than it ''), forming with the first thickness a mounting fold 352a, 352b open towards the outside, and adapted to pass from a spaced position where it forms, for mounting, a non-zero angle with the first thickness 345a, 345b, in a folded position (illustrated in Figure 6) wherein it is substantially parallel to the first thickness 345a, 345b.
- the main connecting part 320 has for its part folded side portions, forming two flaps 325, 326 directed towards the inside on the one hand, and one towards the other on the other hand.
- Each fold 352a, 352b receives, between its fixed and moving thicknesses, a flap 325, 326 of the main connecting portion 320.
- the second thickness 346a, 346b may advantageously be extended by a return 349a, 349b, extending inwards.
- These returns 349a, 349b form surfaces support curves for the folded side portions of the main connecting portion 320, thereby decreasing the radius of curvature and limiting the stresses on the curved portion of these side portions.
- Figure 7 illustrates a spacer 410 according to a fourth embodiment of the invention.
- Spacer 410 here comprises a complementary connecting portion 480, extending parallel to the main connecting portion 420.
- the complementary connecting portion 480 compartmentalizes the inner housing of the spacer in two subspaces 430a, 430b, each housing a bead of desiccant material 434a, 434b.
- connection 480 is essentially made of plastic material, preferably entirely of plastic material. It is for example formed of a layer of PET, in particular of thickness e5 between 0.1 and 5 mm.
- Each main attachment portion 412a, 412b is further provided with a support portion 482a, 482b of said complementary link portion 480.
- these support portions 482a, 482b form intermediate support portions, folded, spaced from the lower support portions 442a, 442b in the transverse direction Z.
- the intermediate support zone 482a, 482b extends generally inwardly of the spacer in the lateral direction Y. It comprises a fold formed by a first thickness 483a, 483b extending laterally towards the interior from the transverse portion 441a, 441b, and a second thickness 484a, 484b, extending laterally outward, here in contact with the first thickness 483a, 483b.
- a support surface is formed by the upper face of the first thickness 483a, of width 19 typically between 3mm and 15mm, on which the complementary connecting portion 480 is bonded.
- the spacer 430 could comprise a plurality of complementary connection parts 480, arranged parallel to each other, to further increase the rigidity of the spacer.
- the spacer 510 comprises, as in the embodiments described above, a first main attachment part 512a, intended to be secured to a first sheet of glass 2a, and a second main attachment part 512b, intended to be secured to a second glass sheet 2b.
- the first and second main attachment parts 512a, 512b are here structurally connected not by one, but by two main connecting parts 520a, 520b, interconnected by a spacer element 590.
- the two main connecting parts 520a, 520b extend in the lateral direction Y, in the extension of one another, and consist essentially of plastics material. Their characteristics, similar to those described in connection with the previous embodiments, will not be described in more detail below.
- the intermediate element 590 serves to secure the two main connecting portions 520a, 520b, and gives the assembly a certain rigidity.
- Each main connecting part 520a, 520b is attached to one of the main attachment parts 512a, 512b on the one hand, and to the intermediate element 590 on the other hand.
- the intermediate element 590 is provided with mounting grooves 591a, 591b intended to receive the lateral ends 522a, 521b of the main connecting parts.
- the intermediate element 590 consists of a metal strip shaped by folding so as to comprise, at its two lateral ends, groove mounting folds 591a, 591b.
- each mounting fold is open towards the main connecting portion 520a, 520b that it is intended to maintain.
- each main connecting part 620a, 620b is folded at its lateral end (s), or the flaps thus formed 625a, 626a; 625b, 626b being housed in the mounting folds 691a, 691b of the intermediate member 690 and / or the first and second main attachment portions 612a, 612b.
- the intermediate element 590, 690 is also a support for a receiving part 592, 692 formed by a metal section defining a receiving groove 593, 693 for a third glass sheet 2c, in particular with a U or V section.
- the receiving groove 593, 693 is obviously open towards the internal cavity 4 of the glazing, to accommodate said additional glass sheet 2c.
- each receiving portion 592, 692 has a bottom wall 594, advantageously connected to the intermediate element. 590, for example by a weld, and two sidewalls 595, 596 extending in a plane substantially orthogonal to the lateral direction and each defining a complementary fixing face intended to be secured by gluing means 5c to a face of the third sheet of glass 2c.
- the receiving portion 592 also includes tabs 597, 598, respectively extending from the free end of each side wall 595, 596, and intended to maintain caches 560a, 560b disposed on either side of the third 2c glass sheet.
- tabs 597, 598 of the receiving portion 592 are disposed facing and in the same plane as the tabs 543a, 543b of the first and second main attachment portions 512a, 512b.
- the spacer 510 or 610 could comprise at least three main connecting parts, connected to each other by intermediate elements.
- the spacer 510 or 610 could also have at least two home parts, especially in the case of a quadruple glazing.
- the intermediate element or elements could be made of any other suitable material, especially plastic.
- the fixing of each intermediate element to the corresponding metal reception part can be done by clipping.
- each test was carried out using a thermal flux meter.
- this type of apparatus makes it possible to measure the thermal conductivity of a component disposed between a cold plate and a hot plate, the temperature difference of which is known.
- each sample was placed with a glass sheet in contact with the cold sheet at 5 ° C, and the other glass sheet in contact with the hot sheet at 15 ° C.
- Test No. 1 was carried out with spacers according to the invention.
- Test No. 2 was carried out with spacers known commercially under the name “swisspacer Ultimate", and described in patent application WO2013 / 104507 cited above.
- Test No. 3 was carried out with spacers known commercially under the name “swisspacer Advance", and described in the patent application WO 2016/046081 cited above.
- Test No. 4 was carried out with conventional type spacers formed of an aluminum body.
- the thermal conductivity of the spacer according to the invention is much lower than that of the spacers made of reinforced plastic or entirely of metal.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1762909A FR3075852A1 (fr) | 2017-12-22 | 2017-12-22 | Espaceur pour vitrage isolant |
EP18194244 | 2018-09-13 | ||
PCT/EP2018/086456 WO2019122276A1 (fr) | 2017-12-22 | 2018-12-21 | Espaceur pour vitrage isolant |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3728776A1 true EP3728776A1 (fr) | 2020-10-28 |
Family
ID=64746568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18822384.6A Withdrawn EP3728776A1 (fr) | 2017-12-22 | 2018-12-21 | Espaceur pour vitrage isolant |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3728776A1 (fr) |
WO (1) | WO2019122276A1 (fr) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2305890C2 (de) * | 1973-02-07 | 1982-06-03 | Julius & August Erbslöh GmbH + Co, 5600 Wuppertal | Distanzprofil für eine Isolierglaseinheit |
US5313762A (en) * | 1991-12-26 | 1994-05-24 | Bayomikas Limited | Insulating spacer for creating a thermally insulating bridge |
US5630306A (en) | 1996-01-22 | 1997-05-20 | Bay Mills Limited | Insulating spacer for creating a thermally insulating bridge |
US20080060290A1 (en) * | 2006-07-24 | 2008-03-13 | Ged Integrated Solutions, Inc. | Thermally Efficient Window Frame |
DE602006010199D1 (de) * | 2006-08-11 | 2009-12-17 | Rolltech As | Abstandhalter für Glasscheiben und ein Verfahren zur Herstellung eines solchen Abstandhalters |
ITBO20080539A1 (it) * | 2008-09-08 | 2010-03-09 | Alluplast S R L | Profilato distanziatore ed isolatore per vetrocamera e metodo per realizzarlo |
PL2526247T3 (pl) * | 2010-01-20 | 2017-01-31 | Technoform Glass Insulation Holding Gmbh | Klamra zespolenia brzegowego jednostki szyby zespolonej, zespolenie brzegowe jednostki szyby zespolonej, jednostka szyby zespolonej z klamrą zespolenia brzegowego |
WO2013104507A1 (fr) | 2012-01-13 | 2013-07-18 | Saint-Gobain Glass France | Espaceur pour vitrages isolants |
DK2746518T3 (en) * | 2012-12-19 | 2017-06-06 | Rolltech As | Two-piece spacer with overlapping surfaces and method of making them |
MX2017003876A (es) | 2014-09-25 | 2017-06-19 | Saint Gobain | Separador para unidades de acristalamiento aislantes. |
-
2018
- 2018-12-21 WO PCT/EP2018/086456 patent/WO2019122276A1/fr unknown
- 2018-12-21 EP EP18822384.6A patent/EP3728776A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019122276A1 (fr) | 2019-06-27 |
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