RU2574703C2 - Spacing shape and insulating glass unit with such spacing shape - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: spacing shape for use in a spacing frame (50) of an insulating glass unit with a hollow body (10) of a shape from plastic material with a chamber (20), which stretches in the longitudinal direction (Z), which has an inner wall (12), an outer wall (14), the first side wall (16) and the second side wall (18), which are connected to the inner wall (12) and the outer wall (14) to form the chamber (20), with the first and second reinforcing layers (22, 24) from metal material, which stretch along the first and second side walls (18) and partially on the outer wall (14) with the first distance (a1) from each other and have the first and second thickness (d2), with a diffusion-barrier layer (26), which is formed directly on the outer wall (14) between reinforcing layers (22, 24) and is connected to them in diffusion-impermeable manner to create the diffusion barrier (27).

EFFECT: increased operational reliability.

35 cl, 25 dwg

Description

The present invention relates to a spacer profile for use in insulating glass units with a similar spacer profile and to an insulating glass packet with a similar spacer profile.

Insulating glass units with at least two sheets 151, 152, which are held in the insulating glass unit at a distance from each other, are known (see Fig. 16). Sheets 151, 152 are typically made of inorganic or organic glass or other materials such as plexiglass. The distance between the sheets 151, 152 is usually provided by the spacer frame 150, which is made of at least one spacer profile 100 of composite material. Spacer profiles made of composite material, also called composite spacer profiles, are made of a plastic profile and a metal layer as a diffusion barrier, they are shown, for example, in DE 19832731 A1 (member of the patent family WO 2000/005475 A1), EP 0953715 A2 (member patent family US 6196652) and EP 1017923 A1 (member of the patent family US 6339909).

Preferably, the intermediate space 153 between the sheets is filled with an insulating inert gas, such as, for example, argon, krypton, xenon, etc. The filling gas for a long period of time also should not be able to escape from the intermediate space 153 between the sheets. Similarly, the surrounding air or its components, such as, for example, nitrogen, oxygen, water, etc., also should not be able to penetrate into the intermediate space 153 between the sheets. For this reason, the spacer profile 100 must be designed so that diffusion between the intermediate space 153 between the sheets and the environment is prevented. Therefore, the spacer profiles have a diffusion barrier 157, which prevents the diffusion of the filling gas from the intermediate space 153 between the sheets into the environment through the spacer profile 100.

In addition, in order to achieve low thermal conductivity in such insulating glass units, heat transfer in the edge joint, that is, in the connection of the edge of the insulating glass unit, sheets 151, 152 and the spacer frame 150, is very important. Insulating glass units that provide high thermal insulation in the edge connection, correspond to the so-called “warm edge” condition in accordance with the meaning of this term in the art. Therefore, the spacer profiles 100 must provide good thermal insulation.

Preferably, the spacer frame 150 bends from a single spacer profile 100. To close the frame 150, both ends of the spacer profile 100 are connected using a connector. If the spacer frame 150 is composed of several parts of the spacer profile 100, then several connectors are also needed. Both in terms of manufacturing costs and in terms of insulating properties, it is preferred that only one joint is provided.

The bending of the frame 150 from the spacer profile 100 is carried out, for example, by cold bending (at a room temperature of about 20 ° C). This raises the problem of folding on the folds.

The spacer profile should be curved with the smallest folding and at the same time should have high strength and bending strength.

From EP 0601488 A2 (a member of the patent family US 5460862), a spacer profile is known in which an additional reinforcing insert is inserted into the plastic on the side of the profile which, when mounted, faces the intermediate space between the sheets.

In addition, spacers are known which have a relatively thin continuous reinforcing layer of metallic material on the body of a plastic profile. When bending by 90 °, such spacers lose their diffusion impermeability and have relatively thick plastic profile walls, therefore, they do not sag too much.

From DE 198 32 731 A1 (a member of the WO 2000/005475 A1 family of patents), a spacer profile is known whose body consists of a material with low thermal conductivity and is connected to a diffusion-impermeable layer of a material with good thermal conductivity that extends essentially over its entire width. The diffusion-impermeable layer of a material with good thermal conductivity has a region with a thermal conductivity reduced in the longitudinal direction of the spacer profile.

The objective of the invention is to develop an improved spacer profile, in which, first of all, improved thermal insulation with good strength or flexural strength and with good folding characteristics during bending. Another objective of the invention is an insulating glass unit with similar spacer profiles.

This problem is solved by means of the spacer profile according to one of claims 1, 4 of the claims or by means of an insulating glass unit according to claim 15.

Improvements of the invention are indicated in the dependent claims.

Diffusion impermeability is provided, on the one hand, by means of a diffusion barrier, which is formed of two reinforcing layers and a diffusion-impermeable layer and, when bending the spacer profile, is in neutral fibers. On the other hand, the hollow body of the profile can also be made, at least in part, of diffusion-impermeable plastic material, for example of EVOH (a copolymer of ethylene and vinyl alcohol), which ensures diffusion impermeability. In this case, a diffusion-barrier layer is also formed between the reinforcing layers, namely, the part of the outer wall located between the reinforcing layers. Significantly less heat is transmitted through the diffusion-barrier layer than through the reinforcing layers. The spacer profile with two reinforcing layers separated from each other, which are interconnected in the central region by means of a diffusion barrier layer, with constant diffusion impermeability, has significantly lower thermal conductivity than a comparable conventional spacer profile. At the same time, the spacer profile becomes stiffer and stronger. In addition, material can be saved, so that weight and manufacturing costs can be reduced. By forming a suitable geometric shape of the hollow body of the profile and the reinforcing layers during bending of the spacer profile, the diffusion barrier layer is located in approximately neutral fibers (in the zone of the material, which is flexible, does not experience elongation or compression) of the spacer profile. Therefore, when bending tensile stresses on the diffusion-barrier layer, essentially do not act. For this reason, a diffusion-barrier layer can be applied, which should absorb only small tensile forces or not at all. In addition to this, the diffusion barrier layer can simply be applied to the spacer profile.

Other distinguishing features and appropriateness arise from the description of examples of forms of execution using the drawings. The drawings show:

figure 1 on a) and B) is a perspective view of a cross section of the assembled insulating glass and located between the sheets of the spacer profile, adhesive material and sealing material,

figure 2 is a schematic side view with a local section on curved from the spacer profile spacer frame in perfect condition,

figure 3 is a cross-sectional view of the spacer profile, on A) according to the first embodiment in a U-shaped configuration and with a narrow diffusion-barrier layer and on B) according to the second embodiment in a U-shaped configuration and with a wide diffusion-barrier layer,

4 is a cross-sectional view of a spacer profile, in A) according to a third embodiment in a W-shaped configuration and with a narrow diffusion barrier layer and in B) according to a fourth embodiment in a W-shaped configuration and with a wide diffusion-barrier layer,

5 is a cross-sectional view of a spacer profile according to a fifth embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

6 is a cross-sectional view of a spacer profile according to a sixth embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

Fig. 7 is a cross-sectional view of a spacer profile according to a seventh embodiment, in A) in a W-shaped configuration, in B) in a U-shaped configuration, in C) an enlarged view of a section encircled by A) a circumference, and D) an enlarged view of a circled on B) the circumference of the plot,

Fig. 8 is a cross-sectional view of a spacer profile according to an eighth embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

Fig.9 is a cross-sectional view of a spacer profile according to a ninth embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

10 is a cross-sectional view of a spacer profile according to a tenth embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

11 is a cross-sectional view of a spacer profile according to an eleventh embodiment, in A) in a W-shaped configuration and in B) in a U-shaped configuration,

12 is a cross-sectional view of a spacer profile according to a twelfth embodiment, in A) in a W-shape and in B) in a U-shape,

13 is a view of the outer wall of the spacer profile according to the thirteenth embodiment, and

Fig. 14 is a cross-sectional view of a spacer profile according to a fourteenth embodiment;

15 is a cross-sectional view of a spacer profile according to a first embodiment after a bending process,

Fig. 16 on A) and B -) in perspective view of a cross-section of the assembled insulating glass unit with the spacer profile, adhesive material and sealing material located between the sheets in it, as it is known in the current state of the art,

Fig.17 on A) -D) - one view of the cross-section of the spacer profile according to the execution forms from the fifteenth to nineteenth,

Fig. 18 is a cross-sectional view of a spacer profile according to a twentieth embodiment, and

Fig. 19 is a cross-sectional view of a spacer profile according to a twenty-first embodiment.

The following describes the execution form with reference to figures 1-17. In all figures, the same reference signs are assigned to the same features, and for reasons of visibility, not all figures show all reference signs.

The expansion profile 1 according to the first embodiment is described with reference to FIG. 3A). The spacer profile 1 is shown in FIG. 3A) in a cross section perpendicular to the longitudinal direction Z, that is, in a section along the XY plane, which is formed by the transverse direction X, which is perpendicular to the longitudinal direction Z, and the vertical direction Y, which is perpendicular to the transverse direction X and the longitudinal direction Z. In this embodiment, the spacer profile 1 extends in the longitudinal direction Z with a plane of symmetry L, which is located in the center relative to the transverse direction X and runs parallel but the longitudinal direction Z and the vertical direction Y.

The spacer profile 1 has a hollow body 10 of a profile made of plastic material that extends in the longitudinal direction Z with an unchanged cross-sectional shape and has a first width b1 in the transverse direction X and a first height h1 in the vertical direction Y. The hollow body 10 of the profile has in its vertical direction Y the inner wall 12 and with the opposite side inner wall 12 in the vertical direction Y, the outer wall 14. In the transverse direction X, the outer edges of the inner wall 12 and the outer wall 14 are interconnected more walls 16, 18, which essentially extend parallel to the vertical direction Y. The first side wall 16 is located in the transverse direction X opposite the second side wall 18. The plane of symmetry L extends substantially parallel to the side walls 16, 18 and is located in the middle between them. By means of the inner wall 12, the first side wall 16, the outer wall 14 and the second side wall 18, which are interconnected, a chamber 20 is formed or limited.

The first side wall 16, the second side wall 18 and the outer wall 14 have a first wall thickness s1. The inner wall 12 has a second wall thickness s2.

The transitions or connecting sections from the side walls 16, 18 to the outer wall 14 are rounded in accordance with the first embodiment in the form of a cross section and are formed here essentially in the form of a quarter circle. Therefore, by means of two side walls 16, 18 and the outer wall 14, a U-shape (U-shape) is created, on which the inner wall 12 is mounted in the form of a cover. Hence the transitions or connecting sections between the side walls 16, 18 and the inner wall 12 in a cross section transverse to the longitudinal direction Z are formed substantially rectangular with a rounded connecting portion on the side facing the chamber 20. The hollow body 10 of the profile is preferably made integral by extrusion.

In this embodiment, the outer wall 14 is formed slightly concave with respect to the chamber 20. That is, the outer wall 14 is curved in the direction of the inner space of the chamber 20 in the vertical direction Y to form a concavity 21. The outer wall 14 is concave in the middle relative to its edges in the transverse direction X, that is, in the region of the plane of symmetry L, to a second height h2 inward in the direction of the chamber 20.

In this embodiment, the inner wall 12 is also formed slightly concave with respect to the chamber 20. That is, the inner wall 12 is curved in the direction of the inner space of the chamber 20 in the vertical direction Y to form a concavity 121. The inner wall 12 is concave in the middle relative to its edges in the transverse direction X, that is, in the region of the plane of symmetry L, to a third height h3 inward in the direction of the chamber 20.

Preferably, concavities 21 are already carried out in the plastic during extrusion. They can, however, also be carried out immediately after extrusion or in a subsequent roll forming process.

In this embodiment, directly on the hollow body 10 of the profile, for the most part, the outer surfaces of the side walls 16, 18 that are opposite to the chamber 20, and the two reinforcing layers 22, 24 extend along the part of the outer side 14 of the outer side 14 that is opposite to the chamber 20. layer 22 extends in a solid and continuous form in the longitudinal direction Z with an unchanged cross-section directly along the (opposite to the camera) outer side of the first side wall 16, starting almost under the inner wall 12, to the transition conductive first side wall portion 16 (the inverse of the chamber) of the outer side of the outer wall 14 and directly on it. The second reinforcing layer 24 extends in a solid and continuous form in the longitudinal direction Z with an unchanged cross section directly along the (opposite to the chamber) outer side of the second side wall 19, starting almost under the inner wall 12, to the part passing into the second side wall 18 ( opposite to the camera) of the outer side of the outer wall 14 and directly along it. The first reinforcing layer 22 is made of a first diffusion-impermeable metallic material with a first thermal conductivity λ ₁ , and the second reinforcing layer 24 is made of a second diffusion-impermeable metallic material with a second thermal conductivity λ ₂ .

If the term “diffusion impermeability” or “diffusion impermeable” is used here with respect to the spacer profile or the material forming the spacer profile, then the following description implies diffusion impermeability for both the vapors and the gases in question (for example, nitrogen , oxygen, water, etc., primarily argon). The materials used are diffusion-impermeable to gases or steam, when preferably no more than 1% of the gases can penetrate into the space between the sheets during the year. The term "diffusion-impermeable" is also identical to the term "low diffusion" in the sense that the requirements of the test standard EN 1279, part 2 + 3, are preferably fulfilled. That is, the finished spacer profile preferably meets the requirements of the test standard EN 1279, part 2 + 3.

The first and second reinforcing layers 22, 24 are not in contact. The reinforcing layers 22, 24 are made and arranged so that they are spaced apart from each other with respect to the transverse direction X by a first distance a1. That is, from the outer side of the outer wall 14 between the reinforcing layers 22, 24, a region 25 central to the transverse direction X remains free, which extends in the transverse direction X along the first distance a1. In this central region 25 or on it, no reinforcing layer has been made or is not located.

In this embodiment, the reinforcing layers 22, 24 extend symmetrically with respect to the plane of symmetry L, so that the first reinforcing layer 22 and the second reinforcing layer 24 respectively have a distance a1 / 2 from the plane of symmetry L. The reinforcing layers 22, 24 are inseparably connected directly to the corresponding the walls. If the term “inseparably directly connected” or “connected” is used here, then in the following description the direct connection without other intermediate layers is meant. In the present embodiment, this specifically means that the hollow profile body 10 and the reinforcing layers 22, 24 are permanently connected to each other by, for example, coextrusion of the hollow profile body 10 together with the reinforcing layers 22, 24 and / or, if necessary, with adhesion promoters and between no other layers are formed by the reinforcing layers 22, 24 and the hollow body 10 of the profile.

The first reinforcing layer 22 has a constant first thickness d1. The second reinforcing layer 24 has a constant second thickness d2. In the present embodiment, the first thickness d1 and the second thickness d2 are the same. Since the reinforcing layers 22, 24 are formed on the outside of the outer wall 14, in this embodiment, the height of the hollow profile body 10 increases in the vertical direction Y by the thickness value d1 or d2, so that the spacer profile has a total height h4 = h1 + d1 . The first width b1 does not change, since in this embodiment, the hollow profile body 10 at the edges in the transverse direction X is made in such a way that the reinforcing layers 22, 24 do not increase the first width b1. That is, the region of the side walls 16, 18, in which the reinforcing layers 22, 24 are not formed, is made correspondingly wider.

In a first embodiment, the reinforcing layers 22, 24 have profiled extension sections 28 in their vertical Y opposite the outer wall 14 of the end regions, which extend in the longitudinal direction Z. The extension sections 28 extend the reinforcing layers 22, 24 in the vertical direction Y, starting almost under the inner wall 12. The term “profiled” means in this connection that the extension section 28 is not only the linear extension of the corresponding reinforcing layer 22, 24 in the vertical direction Y, and in a two-dimensional cross-sectional image in the X-Y plane, a two-dimensional profile is formed, which has, for example, one or more bends 29 of the extension section 28.

In this embodiment, the extension sections 28 have, at the height of the inner wall 12, a bend 29 at an angle of 90 ° in the direction of the plane of symmetry L into the inner wall 12. That is, the extension section 28 extends into the inner wall 12. Further, in a two-dimensional cross-sectional image in the XY plane, has a groove 30. The extension profile 28 extends in its first length 11 in the transverse direction X from the outer side of the corresponding side wall 16, 18 of the hollow profile body 10 into the inner wall 12.

Extension sections 28 serve to improve the bending performance and for better adhesion of the reinforcing layers 22, 24 on or in the hollow profile body 10. Preferably, the extension sections 28 are located as close as possible to the outer side of the inner wall 12, which is opposite to the chamber 20 (as close as possible to the intermediate space between the sheets 53), but that they are covered with the material of the inner wall 12. Each of the extension sections 28 is included receiving region 31. Such a receiving region 31 is formed by the inner wall 12 and / or the side wall 16, 18 and extends from the outer side of the inner wall 12 to itself and, depending on the circumstances, to the corresponding side wall ku 16, 18 at a height in the vertical direction Y, which is less than 0.4h1, preferably less than 0.2h1, and even more preferably less than 0.1h1. The indicated height of the receiving region 31 also determines the beginning of the extension sections 28. In the transverse direction X, the receiving regions 31 have at least a thickness s1 of the side walls 16, 18. The receiving regions 31 preferably extend in the transverse direction X from the outer side of the side walls opposite to the chamber. 16, 18 for a width of less than 1.5l1, more preferably for a width of less than 1.2l1, and even more preferably for a width of less than 1.1l1.

Optionally, the inner wall 12 and / or side walls 16, 18 in the area of the receiving regions 31 may have an increased wall thickness. This is shown, for example, in FIGS. 5, 6, 8 and 10.

The weight of the corresponding extension section 28 is preferably at least 10% of the weight of the rest of the corresponding reinforcing layer 22, 24, which is above the midline of the spacer profile 1 in the vertical direction Y, preferably at least about 20%, more preferably at least 50% and even more preferably at least 100%.

On the area of the outer side of the outer wall 14, in which the reinforcing layer 22, 24 is not provided, that is, on the region 25 central to the transverse direction X, which extends in the transverse direction X along the first distance a1, a diffusion-barrier layer 26 is directly applied mainly from a third diffusion-impermeable metal material with a third thermal conductivity λ ₃ . The diffusion barrier layer 26 may, however, also be made of another diffusion impermeable material, for example, diffusion impermeable plastic material. A similar plastic material is, for example, a copolymer of ethylene and vinyl alcohol, also called EVON. Preferably, NIPPON GOSHEI EVON material sold under the name “SoarnoL” is used. A product sold under the name SoarnoL 29mol% is preferred. Even more preferred is a diffusion barrier layer 26 formed of several layers. The layers comprise at least a first layer of EVON material and a second layer of polyolefin, for example PE or PP. The first and second layers are advantageously interconnected using an adhesion promoter.

The diffusion barrier layer 26 extends in the transverse direction X along the first distance a1 between the first reinforcing layer 22 and the second reinforcing layer 24 and in the longitudinal direction Z with an unchanged cross-sectional shape in the XY plane perpendicular to the longitudinal direction L along the entire length of the spacer profile 1. Diffusion the barrier layer 26 has a third thickness d3, which in this embodiment is smaller than the first thickness d1 and the second thickness d2. The diffusion barrier layer 26 is diffusely impermeably connected to the first reinforcing layer 22 and to the second reinforcing layer 24. The diffusion barrier layer 26, for example, by gaseous spraying, laminating, bonding, welding, ion-plasma spraying, galvanizing or rolling, diffusion imperviously directly connected to the reinforcing layers 22, 24 and to the outer side of the outer wall 14. Preferably, the diffusion barrier layer 26 is directly inextricably bonded to the outer side of the outer wall 14 At its edges in the transverse direction X, it, for example, by means of an adhesion promoter, is bonded to the reinforcing layers 22, 24. Alternatively, the edges of the diffusion barrier layer 26 are directly bonded to the edges of the reinforcing layers 22, 24, for example by welding or gaseous spraying.

Therefore, the diffusion barrier layer 26 in the region of the outer wall 14 is directly connected to it, while the reinforcing layers 22, 24 are not connected to the outer wall 14. As a result, the outer wall is completely covered by the reinforcing layers 22, 24 and the diffusion barrier layer 26.

The diffusion barrier layer 26 serves to diffuse imperviously connect the first reinforcing layer 22 to the second reinforcing layer 24. At the same time, the diffusion barrier layer 26 serves to thermally isolate the first reinforcing layer 22 from the second reinforcing layer 24. Heat transfer through the diffusion barrier layer 26 is smaller than that through the reinforcing layers 22, 24. Thermal conductivity, that is, the coefficient of thermal conductivity, depends on the geometric shape and thermal conductivity of the structural element. The diffusion barrier layer 26 is formed in such a way that the product of the third thickness d3 and the third thermal conductivity λ _{3 of the} diffusion barrier layer 26 is less than both the product of the first thickness d1 and the first thermal conductivity λ _{1 of the} first reinforcing layer 22, and the products of the second thickness d2 and the second specific heat conductivity λ _{2 of the} second reinforcing layer 24. This condition does not exclude that the third thickness d3 or the third specific heat conductivity λ _{3 is} greater than the corresponding parameters of the reinforcing layers 22, 24, since the value produced can be corrected by another suitably reduced coefficient. For example, using a very thin, for example, obtained by gaseous spraying, diffusion-barrier layer 26 of aluminum, which has a very high third thermal conductivity λ ₃ , with a very small third thickness d3 (by means of gaseous spraying), both insulating and diffusive - impermeable connection between the reinforcing layers 22, 24, in which the upper ratio between the works.

Therefore, the spacer profile 1 has a diffusion-impermeable diffusion barrier 27, which is formed from the first reinforcing layer 22, the diffusion-barrier layer 26 and the second reinforcing layer 24, and extends from the first side wall 16 along the outer wall 14 to the second side wall 18. As a result, in the integrated state of the spacer profile 1, the intermediate space 53 between the sheets can be diffusion-impermeably limited by the spacer profile 1.

In addition, in the illustrated embodiment, each of the side walls 16, 18 has one groove 32 on the inner side of the corresponding side wall 16, 18 facing the camera. The grooves 32 are formed below the center line in the vertical direction Y of the spacer profile 1 and extend in the longitudinal direction Z. Grooves 32 serve to improve bending performance, as will be explained below.

Holes 34 are formed in the inner wall 12, so that regardless of the material choice for the hollow profile body 10, the inner wall 12 is not diffusion-impermeable. In the mounted state, through the openings 34 of the spacer profile 1, gas exchange can be ensured, especially the exchange of moisture vapor, between the intermediate space 53 between the sheets and the chamber 20 filled with hygroscopic material.

The inner wall 12 is called the inner wall, since in the integrated state of the spacer profile 1, it faces the intermediate space 53 between the sheets (see figa) and B)). The outer wall 12 is called the outer wall, since in the integrated state of the spacer profile 1 it is located on the back side with respect to the intermediate space 53 between the sheets. The side walls 16, 18 are formed in the form of supporting jumpers for fitting to the inner sides of the sheets 51, 52, through which the spacer profile 1 is preferably glued to the inner sides of the sheets 51, 52 (see also figure 1). A chamber 20 is formed to accommodate hygroscopic material.

Preferably, the spacer profile 1 is folded by four 90 ° bends into a single spacer frame 50 (see FIG. 2). Alternatively, one, two or three bends may also be provided, and other necessary 90 ° angles are formed from the corner connectors. Preferably, the spacer profiles 1 are bent in a guided cold bending process. For example, the expansion profile 1 is inserted into the groove during bending, which guides or supports the side walls in the transverse direction X. This ensures that the side walls cannot bend in the transverse direction X during bending.

When bending the spacer profile 1, the inner wall 12 is usually upset or shortened. The outer wall 14 is extended. Between the inner wall 12 and the outer wall 14 there is a neutral region in which the material of the body does not lengthen and does not settle. The neutral region is also called the “neutral fibers” of the body.

Due to the concave shape of the outer wall 14, it is ensured that with the directed bending of the spacer profile 1, the outer wall 14 “folds” inward (see FIG. 15). “Folding” means here that the outer wall 14 is displaced in the direction of the chamber 20, that is, in the direction of the neutral fibers. When bending the spacer profile 1, the grooves 32 in the side walls 16, 18 additionally create the conditions for the outer wall 14 to fold easily and far inward.

In order to prevent the diffusion-barrier layer 26 during bending due to elongation usually occurring on the outside of the bent body, especially the central region 25, which extends along the first distance a1 (the region of the outer wall 14, on which no reinforcing layer 22, 24 is formed) in the transverse direction X, the concavity 21 of the outer wall 14, that is, the second height h2, the first and second thicknesses d1, d2 of the reinforcing layers 22, 24, the thicknesses s1, s2 of the walls of the chamber 20 and the grooves 30 are formed so that during the bending process by 90 ° around bending axis parallel to In the direction X of the opposite direction, the diffusion barrier layer 26 is substantially on the “neutral fibers” of the spacer profile 1. That is, the diffusion barrier layer 26 does not extend when bending, since the diffusion barrier layer 26 is on the neutral fibers of the spacer profile 1. The bending stress is approximately zero there. Therefore, the diffusion barrier layer 26 must satisfy only very simple mechanical requirements and it can be ensured that during bending the diffusion barrier layer 26 will not tear and thus will not become leaky. The reinforcing layers 22, 24, especially their thicknesses d1, d2, are formed so that when bending the spacer profile 1 they do not tear. Therefore, the diffusion barrier 27, consisting of the first reinforcing layer 22, the diffusion barrier layer 26 and the second reinforcing layer 24, even after the bending process remains diffusion-impermeable.

The concave shape creates the prerequisites for "easy" folding also in the inner wall 12. The inner wall 12 is mostly deposited. Alternatively or additionally, folding may also occur, so that the length is suitably shortened. Extension sections 28 reduce creasing at the edges in the longitudinal direction X.

The plastic material of the hollow profile body 10, in a preferred manner, is an elastically and plastically deformable material with low thermal conductivity (insulating).

The term “elastic and plastically deformable” here preferably means that after the bending process, restoring forces act in the material, as is typical for plastics, however, part of the bending is carried out by irreversible plastic deformation. In addition, the term "with poor thermal conductivity" here preferably means that the thermal conductivity X is less than or equal to 0.3 W / (m · K).

Preferably, such materials are polyolefins, more preferably polypropylene, polyethylene terephthalate, polyamide, copolyamide and polycarbonate, ABS, SAN, PCABS (a mixture of ABS and polycarbonate). An example of such a polypropylene is Novolen 1040®. This material preferably has an elastic modulus of less than or equal to 2200 N / mm ² and a specific thermal conductivity λ 0 0.33 W / (m · K), preferably 0 0.2 W / (m · K). The first metal material is preferably a plastically deformable material. The term “plastically deformable” here means that after deformation the elastic restoring forces practically do not work. This is typical for bending metals beyond the yield strength. A preferred first metal material for the reinforcing layer 22 is steel or stainless steel, which has a first thermal conductivity in the range of 10 W / (m · K) ≤λ ₁ ≤50 W / (m · K), preferably in the range of 10 W / (m · K) ≤λ ₁ ≤25 W / (m · K) and even more preferably in the range of 14 W / (m · K) ≤λ ₁ ≤17 W / (m · K). The elastic modulus of this material is preferably in the range of 170 kN / mm ² to 240 kN / mm ² , more preferably about 210 kN / mm ² . The elongation at break is preferably ≥15%, more preferably ≥20%, more preferably ≥30% and even more preferably ≥40%. The metallic material may be protected against tin (like tinplate) or zinc corrosion, in certain cases, if necessary or desired, with a chrome or chromate coating. The second metal material of the second reinforcing layer 24 preferably corresponds to the first metal material, but, first of all, if the shapes and thicknesses / strengths of both reinforcing layers 22, 24 are different from each other, it can also be a different metal material from the first metal material. An example of a reinforcing layer 22, 24 is a stainless steel film with a thickness d1, d2 of 0.10 mm.

A preferred diffusion-impermeable metal material for the diffusion-barrier layer 26 is, for example, steel or stainless steel, aluminum deposited by gaseous or ion-plasma spraying. Alternatively, the dispersion barrier layer may also be formed from a dispersion-impermeable film of a metal-coated multilayer plastic or of a transfer film with a metal layer. That is, the diffusion barrier layer 26 can be formed of plastic reinforced with a continuous metal layer.

The metal material for the diffusion barrier layer 26 has a third thermal conductivity in the range of 10 W / (m · K) ≤λ ₃ ≤250 W / (m · K) and preferably in the range of 14 W / (m · K) (stainless steel) ≤ λ ₃ ≤200 W / (mK) (aluminum). An example of a diffusion barrier layer 26 of metal is, for example, a stainless steel foil with a thickness d3 of 0.01 mm, an aluminum foil with a thickness of d3 from 0.001 mm to 0.01 mm deposited by gaseous or ion-plasma spraying an aluminum layer with a thickness d3 of less than 10 nm. It should be noted that the thickness d3 gives only the thickness of the metal layer. In the case of a diffusion barrier layer of plastic reinforced with a metal layer or of a multilayer film, the diffusion barrier layer is correspondingly thicker.

For the manufacture of the spacer profile 1, the hollow profile body 10 is preferably coextruded together with the first and second reinforcing layers 22, 24. After the extrusion process, the first and second reinforcing layers 22, 24 are inseparably connected to the hollow profile body 10. The first and second reinforcing layers 22, 24 are spaced apart by a first distance a1 in the transverse direction X on the outer side of the outer wall 14. At a later stage, the diffusion barrier layer 26 is diffusion-impermeably applied to the central region not connected to the reinforcing layers 22, 24 25 at a first distance a1 from the outer side of the outer wall 14. The diffusion barrier layer is applied, for example, by gaseous or ion-plasma spraying, by lamination, by galvanic coating or by gluing. In this case, the diffusion barrier layer at its edges in the transverse direction X is also diffusion impermeably connected to the corresponding reinforcing layer 22, 24. After applying the diffusion barrier layer 26, the first reinforcing layer 22, the diffusion barrier layer 26 and the second reinforcing layer 24 form a continuous diffusion barrier 27.

After the manufacture of the spacer profile 1, it bends in accordance with the shape of the necessary spacer frame 50, as it is shown as an example in figure 2. As already described above, when bending, the side walls 16, 18 are advantageously guided so that they cannot deviate in the transverse direction X due to the bending process. After bending the spacer frame 50, its ends should be connected using a suitable connector 54 (see figure 2). After connecting the spacer profile 1, the side walls 16, 18 formed as supporting jumpers are glued by means of an adhesive material (primary sealing means) 61, for example polyisobutylene-based butyl sealing compound, to the inner sides of the sheets 51, 52 (see FIG. 1). Thus, the intermediate space 53 between the sheets is limited by both sheets 51, 52 and the spacer frame 50. The inner side of the spacer frame 50 faces the intermediate space 53 between the sheets. To fill the free space with the reverse in FIG. 1 in the vertical direction Y with respect to the intermediate space 53 between the side sheets, a mechanically stabilizing sealing material (secondary adhesive), for example, on a polysulfide, polyurethane or silicone base, is introduced into the remaining free space between the inner sides of the sheets . This sealing material also protects the diffusion barrier 27 from mechanical and other damaging / degrading effects. The insulating glass unit thus manufactured can then be inserted into the window frame.

All information relating to the first execution form also applies to all other described execution forms, except when the difference is explicitly described or shown in the figures.

On figb) shows the spacer profile 1 according to the second form of execution. The only difference from the spacer profile 1 according to the first embodiment is that the reinforcing layers 22, 24 are formed so that the first distance a1 between the reinforcing layers 22 and 24 in the transverse distance X is larger than in the embodiment shown in FIG. 3A). That is, the first reinforcing layer 22 and the second reinforcing layer 24 are essentially formed only to the edge region of the outer wall 14 in the transverse direction X, and the diffusion barrier layer 26 extends greater than the first distance a1 in the transverse direction X The diffusion barrier layer 26 is located according to the previous forms of execution, essentially completely on the neutral fibers of the spacer profile 1.

On figa) shows the spacer profile 1 in accordance with the third form of execution. The spacer profile 1 in accordance with the third embodiment is formed in the so-called “W-shaped configuration”. In a W-shaped configuration, the side walls 16 have, when viewed from the inside of the chamber 20, a concave connecting portion 40 for connecting to the outer wall 14. Since the reinforcing sections 22, 24 extend along the outer side of the side walls 16, 18 to the outer side of the outer wall 14 , the reinforcing sections 22, 24 also have a corresponding concave connecting section 40. The presence of a concave connecting section 40 leads to an extension of the reinforcing layers 22, 24 with the same first width b1 and first height h1 of the spacer profile 1. Due to the extension I reinforcing layers 22, 24 heat transfer through the reinforcing layers 22, 24 compared with the first form of execution (U-shaped configuration) despite the same height h1 and width b1 is reduced. Further, due to the changed structure, the stiffness of the spacer profile 1 in bending is further improved. Due to the presence of a concave connecting portion 40, concavity 21 in the outer wall 14 can be discarded. When bending, a region that has a diffusion barrier layer 26 is folded inwardly in the direction of the chamber 20. A region that has a diffusion barrier layer 26 is located on the neutral fibers of the spacer profile.

Otherwise, the spacer profile 1 corresponds to that shown in FIG. 3A). The fourth embodiment shown in FIG. 4B) differs from the embodiment shown in FIG. 4A) in that the first distance a1 is increased compared to the embodiment shown in FIG. 4A). As a result, heat transfer can be further reduced.

The fifth to twelfth embodiments described hereinafter have, first of all, a diffusion-impermeable diffusion barrier 27, which is formed from the first reinforcing layer 22, the diffusion-barrier layer 26 and the second reinforcing layer 24. In addition, in all the illustrated embodiments, when bending around the axis parallel to the transverse direction X, the diffusion barrier layer 26 is located on the neutral fibers of the spacer profile 1. The optional grooves 32 are not shown on the spacer profiles shown in FIGS. 5-14 and concavities 21, 121.

In the fifth embodiment shown in FIG. the side wall 16, 18 along the length 11. In contrast to the first embodiment, the extension section 28 does not have additional profiling in the form of a groove extending in the longitudinal direction Z, but runs straight.

On figa) and figb) shows the spacer profile 1 according to the sixth form of execution in cross section along the plane X-Y. The sixth embodiment differs from the fifth embodiment in that the extension portions 28 are almost twice as long as in the first embodiment, and the length l1 in the transverse direction X remains almost the same. This is achieved due to the fact that the extension sections 28 have a second bend 29 to 180 °. The second bend 29 to 180 ° is formed with a distance l1 from the outside of the corresponding side wall 16, 18, so that the segment of the extension section 28, which is adjacent to the second bend 29, also extends in the transverse direction X, but to the outside. As a result of this, it is achieved that a substantially longer extension section is located in the inner wall 12 of the spacer profile 1, whereby improved bending characteristics are achieved. Thus, in addition, part of the material of the hollow body 10 of the profile is covered by the formed extension sections 28 of the profiles on three sides. Such a grip leads to the fact that during the bending with upsetting, the covered material essentially acts as an incompressible volume element. This results in an improved bending characteristic or an improved stiffness characteristic.

The spacer profile 1 according to the seventh embodiment is described with reference to FIGS. 7A) and B), and the enclosed in FIGS. 7A) and B) in the circumference of the region are shown in FIGS. 7B) and D) in an enlarged view. In the embodiment shown in FIG. 7, the extension sections 28 do not protrude into the inner wall 12, but are provided on the outer side of the inner wall 12. The extension sections 28 are located in a very favorable position for bending, however, when installed, they are visible to the consumer.

8A) and B) are cross-sectional views of a spacer profile 1 according to an eighth embodiment. The eighth embodiment differs from the fifth embodiment in that the bend 29 is not bent 90 °, but 180 °, so that the portion of the extension portion 28 following the bend 29 extends in the vertical direction Y. As a result, in accordance with the sixth embodiment, trilaterally covering part of the material of the hollow profile body 10, although only one bend 29 is available. This results in an improved bending characteristic and an improved stiffness characteristic.

On figa) and B) shows the types of cross-sections of the spacer profile 1 according to the ninth form of execution. The ninth embodiment differs from the eighth embodiment only in that the bending radius of the extension portion 28 is smaller than in the eighth embodiment.

On figa) and b) shows the types of cross-sections of the spacer profile 1 according to the tenth form of execution. The tenth embodiment differs from the first to ninth forms in that the extension sections 28 first bend 29 approximately 45 ° inward, then bend 29 approximately 45 ° in the opposite direction, and then bend 180 ° with the corresponding tripartite grip parts of the material of the hollow body 10 profile.

If the spacer profile 1 or extension section 28 has a curved and / or angled configuration in accordance with FIGS. 3-10, then the length (in cross section perpendicular to the longitudinal direction) of extension section 28 and, therefore, additionally introduced in this section or in In this region of the spacer profile, the mass of the reinforcing layer increases markedly. This results in reduced folding during bending. In addition, sagging is significantly reduced, since a curved angled and / or folded extension section contributes significantly to the structural integrity of the bent spacer frame.

On figa) and b) shows the spacer profile 1 according to the eleventh form of execution in the W-shaped and U-shaped configurations. The spacer profile 1 of this embodiment does not have extension sections 28.

On figa) and b) shows the spacer profile 1 according to the twelfth form of execution. This spacer profile 1 differs from that shown in FIGS. 10A) and B) of the tenth embodiment in that there is no bend 29 by 180 ° and the subsequent portion of the extension section 28.

13 shows another alternative embodiment in a bottom view in the Y direction. In this embodiment, there is only one reinforcing layer 22, 24, which extends in a thin layer along the side walls 16, 18 and the outer wall 14. The reinforcing layer 22, 24 has cutouts 35 that are separated by transverse bridges 36. Each cutout is formed in the middle between the side walls 16, 18 and has a second width b2 in the transverse direction X. The height of the cuts in the longitudinal direction Z follows from the second distance a2 between the transverse bridges 36. The transverse bridges themselves extend with a second length l2 in the longitudinal direction Z. The transverse bridges 36 and cuts 35 are preferably uniformly arranged in the longitudinal direction Z. The reinforcing layer 22, 24 may have a different thickness / strength in the vertical direction Y in the region of the transverse bridges 36. A diffusion barrier layer 26 is applied to at least the areas of the outer wall 14 not covered by the reinforcing layer 22, 24 between the transverse bridges 36 and the reinforcing layer 22 24. To simplify the manufacture, the diffusion barrier layer can also be applied to the transverse bridges 36. In this form of execution, the ultimate load in the transverse direction X or the compressive / tensile force that the expansion joint can withstand il in the transverse direction X, without deforming or collapsing increases. In addition, it is possible in a simple manner to ensure that the diffusion barrier layer 26 is on neutral fibers.

On Fig shows another form of execution, which does not have all the requested distinguishing features, in which the reinforcing layers 22, 24 are completely immersed in the side walls 15, 18 and partially in the outer wall 14.

17 shows in a) -g) forms of execution from the fifteenth to nineteenth. In these embodiments, the dispersion barrier layer 266 is formed not of a metal material, but of a plastic material. The plastic material is diffusion impermeable. A similar diffusion-impermeable plastic material is, for example, a copolymer of ethylene and vinyl alcohol, also called EVON. Such EVON material preferably has a third thermal conductivity λ ₃₃ from 0.25 W / (m · K) to 0.40 W / (m · K).

Due to such a small third thermal conductivity λ _{33, the} diffusion-barrier layer of EVON material can have a greater third thickness d33 compared to the metal material of the previous forms of execution and at the same time provide high or higher thermal insulation. True, in order to achieve an improvement in thermal insulation compared to a continuous reinforcing layer, here the product of the third specific thermal conductivity λ ₃₃ and the third thickness d33 must also be less than the product of the first specific thermal conductivity λ ₁ and the first thickness d1 and less than the product of the second specific thermal conductivity λ ₂ and a second thickness d2.

Preferably, NIPPON GOCHEI EVON material sold under the name “SoarnoL” is used. This product is offered with different ethylene content. Find applications, for example, SoarnoL V (25 mol% ethylene), SoarnoL DC (32 mol% ethylene), SoarnoL ET (38 mol% ethylene), SoarnoL AT (44 mol% ethylene) and SoarnoL H "(48 mol% of ethylene). Even more preferred is the use of a material sold under the name SoarnoL 29mol% or SoarnoL DT or SoarnoL D with 29 mol% ethylene.

Such material “SoarnoL 29mol%” or “SoarnoL DT” or “SoarnoL D” has a third thermal conductivity λ ₃₃ = 0.33 W / (m · K) at 60 ° C or 0.28 W / (m · K ) at 120 ° C. In the forms of execution from the fifteenth to the nineteenth, the third thickness d33 of the diffusion barrier layer 266 of EVON material is significantly greater than the third thickness d3 of the diffusion barrier layer 26 of the metal layer in the execution forms from the first to fourteenth. Due to the greater thickness d33, the diffusion barrier layer 266 is more resistant (more tensile, tear resistant) than the very thin metal layer / metal foil used in the above embodiments. Therefore, in the execution forms from the fifteenth to the nineteenth, there is no need to form a spacer profile 1 so that when bending the spacer profile 1, the diffusion barrier layer 266 is on the neutral fibers of the spacer profile 1. For the same reason, concavities 21 and 121 and grooves 32 are optional distinguishing features.

If the diffusion barrier layer 266, in accordance with the first to fourteenth embodiments, is formed with a very small third thickness d33 of 0.01 mm to 0.1 mm, it is preferable that the spacer profile 1 in accordance with the first to fourteenth embodiments was also formed so that when bending the spacer profile 1, the diffusion barrier layer 266 of EVON material is on neutral fibers.

As above, in the embodiment from the fifteenth to the nineteenth, the diffusion barrier layers 266 extend in the longitudinal direction Z with an invariable cross-sectional shape in the X-Y plane perpendicular to the longitudinal direction along the entire length of the spacer profile and are symmetrical to the plane of symmetry L.

In the fifteenth embodiment shown in FIG. 17A), the diffusion barrier layer 266 extends in the transverse direction X with a third width b3 along the first distance a1 between the first reinforcing layer 22 and the second reinforcing layer 24. In this embodiment, the diffusion barrier layer 266 has a third thickness d33. In this embodiment, the third thickness d33 preferably corresponds to the first thickness d1 of the first reinforcing layer 22 or the second thickness d2 of the second reinforcing layer 22, 24, which are equal here (d1 = d2).

The diffusion barrier layer 266 is diffusely impermeably connected to the outer wall by, for example, coextrusion, lamination, or by an adhesion promoter. Preferably, the diffusion barrier layer 266 and the outer wall 14 are inextricably connected. According to embodiments from the first to the fourteenth, the diffusion barrier layer 266 at its edges in the transverse direction X is also diffusion-impermeable and preferably permanently connected to the first and second reinforcing layers 22, 24, respectively, for example by means of an adhesion promoter or by welding. In this embodiment, a continuous diffusion barrier 27 is also formed by the reinforcing layers 22, 24 and the diffusion-barrier layer 266. By means of the diffusion-barrier layer 266 and the reinforcing layers 22, 24, a substantially solid plane is created.

In the sixteenth embodiment shown in FIG. 17B), the diffusion barrier layer 266 is formed on the outer wall 14 or deposited on it between the reinforcing layers 22, 24 in the form of a “base” or in an inverted T-shape. The intermediate space extends between the reinforcing layers 22, 24 and is limited on both sides of the outer wall 14 in the transverse direction X by the edges of the reinforcing layers 22, 24 facing each other in the transverse direction X. In the vertical direction Y, the intermediate space is limited on one side opposite to to the inner wall 12 by the outer side of the outer wall 14.

The diffusion barrier layer 266 has a first region 70 and a second region 71. The first region 70 corresponds to a diffusion barrier layer 266 of a sixteenth embodiment. As above, the width of the first region 70 corresponds to the first distance a1 between the reinforcing layers 22, 24. The fourth thickness d4 of the first region 70 in the vertical direction Y preferably corresponds to the thickness d1, d2 of the reinforcing layers 22, 24. In the vertical direction, opposite to the outer the side wall 14 adjacent to the first region forms a second region 71, which extends along a third width b3, which is greater than the first distance a1 between the reinforcing layers 22, 24. The second region 71 is formed with a width overlap (b3-a1) / 2 from each of the reinforcing layers 22, 24. The second region 71 has a fifth thickness d5. The first region 70 and the second region 71 are formed as a whole.

In the region between the reinforcing layers 22, 24, the diffusion barrier layer 266 has a total thickness d3 = d4 + d5, which is greater than the thicknesses d1, d2 of the reinforcing layers. The diffusion barrier layer 266 can be coextruded together with the hollow profile body 10 and the reinforcing layers 22, 24. Alternatively, it can also be preferably diffusion-impermeably connected to the reinforcing layers 22, 24 and / or to the outer wall 14 after applying the reinforcing layers, for example using an adhesion promoter or by lamination.

The total height h4 of the spacer profile is equal in this case (without taking into account the optional concavity 21) the sum of the first height h1 of the hollow body 10 of the profile and the third thickness d33 of the diffusion-barrier layer 266.

On figv) shows a seventeenth form of execution, which, like the sixteenth form of execution has a diffusion barrier layer 266 with a first region 70, which is formed between the reinforcing layers 22, 24. The second region 71 is formed in this form of execution is not inverse with respect to to the outer wall 14 of the side of the reinforcing layers 22, 24, and, conversely, facing the outer wall 14 of the side of the first region 70. Therefore, the diffusion barrier layer 266 extends between the reinforcing layers 22, 24 and partially along the side of the reinforcing layer 14 facing the outer wall 14 x layers 22, 24 between them and the outer wall 14. The widths in the transverse direction X and thicknesses in the vertical direction Y of the first region 70 and the second region 71 preferably correspond to those of the sixteenth embodiment. Thus, the areas 72 overlapping with the reinforcing layers 22, 24 also have the dimensions of the sixteenth embodiment.

Since the fourth thickness d4 of the diffusion barrier layer 266 corresponds to the thickness d1, d2 of the reinforcing layers 22, 24, a substantially continuous / continuous plane is formed by the diffusion barrier layer 266 and the reinforcing layer (if we ignore the concavity 21). In the region in which the diffusion barrier layer 266 is formed, the outer wall 14 has a reduced wall thickness (s1-d5). The second region 71 of the diffusion barrier layer 266 is preferably completely bordered by the outer wall.

In the FIG. 17G) eighteenth embodiment, the diffusion barrier layer 266 substantially coincides with the second region 71 of the seventeenth embodiment. The diffusion barrier layer 266 has a third thickness d33 in the vertical direction Y and a third width b3 in the transverse direction X. The third width b3 is greater than the first distance a1. The diffusion barrier layer 266 has a rectangular cross section, when viewed in the X-Y plane, and is completely bordered by the outer wall 14. Therefore, the outer wall 14 in the region between the reinforcing layers 22, 24 has a smaller wall thickness (s1-d33).

The diffusion barrier layer 266 is located symmetrically with respect to the axis of symmetry L in such a way that it is located across the width (b3-a1) / 2 between the reinforcing layers 22, 24 and the outer wall 14, that is, it is overlapped by the reinforcing layers in the transverse direction X. The diffusion barrier the layer 266 is formed not in a plane defined by the edges of the reinforcing layers 22, 24 in the transverse direction X (if we neglect the concavity 21), but in a plane adjacent to it in the vertical direction Y in the direction of the inner wall 12.

In the nineteenth embodiment shown in FIG. 17E), a diffusion barrier layer 266 with a rectangular cross section is formed when viewed in the X-Y plane. The diffusion barrier layer has a third thickness d33 in the vertical direction Y and a third width b3 in the transverse direction X. The third width b3 is greater than the first distance a1. In this embodiment, the thickness s1 of the outer wall 14 between the reinforcing layers 22, 24 in the central region 25 is opposite to the inner wall 12 of the side by a thickness d1 or d2 greater. The outer wall 14 forms with the reinforcing layers 22, 24 a continuous plane 73 and borders the reinforcing layers 22, 24 at their edges in the transverse direction X.

A diffusion barrier layer 226 is deposited on this continuous plane 73 or is formed thereon symmetrically on the plane of symmetry L. The diffusion barrier layer 226 lies both on the reinforcing layers 22, 24 and on the outer wall 14 in the region between the reinforcing layers 22, 24.

17B), 17D) and 17D), the diffusion barrier layers 266 can be coextruded either together with the hollow profile body 10 or together with the hollow profile body 10 and reinforcing layers 22, 24. Alternatively, they can be applied to the outer wall 14 by means of an adhesion promoter, by laminating, welding (see also the first to fourteenth form) before applying the reinforcing layers 22, 24. Alternatively, they can also be applied, for example by means of bonding and gluing, after applying the reinforcing layers 22, 24. Pre preferably, at least the reinforcing layers 22, 24 and the diffusion barrier layer 226 are joined together by coextrusion, applying an adhesion promoter (see above), preferably one-piece and diffusion-impermeable, to form a continuous diffusion-barrier layer 27.

On Fig shows a twentieth embodiment of the present invention. In this embodiment, the entire hollow profile body 10 is formed of diffusion-impermeable EVON material. Formed in the above-described embodiments, always by means of the reinforcing layers 22, 24 and the diffusion-barrier layer 26, 226, the diffusion barrier 27 is realized in this embodiment by the side walls 16, 18 and the outer wall 14. In this embodiment, the diffusion-barrier layer is formed integral with outer wall 14.

Alternatively, only side walls 16, 18 and an outer wall 14 or only an outer wall 14 can be made of EVON material. The thickness of the corresponding walls of EVON material can be up to 2 mm, but preferably corresponds to that in the first to fourteenth embodiments.

Contact with water or water vapor can negatively affect the diffusion impermeability of the EVON material, especially with thin EVON material. EVON material may be prone to absorb water or water vapor. Due to absorption, diffusion impermeability can also be reduced.

To prevent this negative effect, it turned out to be preferable to form a diffusion-barrier layer of at least two-layer or two-tier. The two-layer diffusion barrier layer has a first layer of EVON material (first layer 74). The first layer of EVON material is deposited or formed on a substrate (second layer 75), which has very low permeability to water and is diffusion-impermeable to water / water vapor. It can be especially useful if the first layer of EVON material is protected from contact with water through the second layer. Particularly preferred is the arrangement in which the first layer of EVON material is protected from contact with water / water vapor by both the second layer and the outer wall 14 of the hollow profile body. Therefore, in this particularly preferred embodiment, the first layer is located between the outer wall 14 and the second layer. As the substrate material, a polyolefin, preferably PE, and even more preferably PP, may be used.

On Fig shows a cutout spacer profile of a similar particularly advantageous twenty-first form of execution of the present invention. The cross section shows only the outer wall 14 of the spacer profile 1 in the region in which a diffusion-barrier layer is located between the reinforcing layers 22, 24. This embodiment is distinguished from other embodiments only in that the diffusion barrier layer 266 is formed of a first layer 74 which is formed of diffusion-impermeable EVON material (as above, for example, “SoarnoL”) and a second layer 75 which is formed of a polyolefin, for example from PE or PP. In the future, only these features that differ from other forms of execution are described in detail.

The diffusion barrier layer 266, consisting of the first and second layers 74, 75, essentially has the form of a diffusion barrier layer 266 according to the sixteenth form of execution, which is shown in figv). In the present embodiment, the first layer 74 in accordance with the first region 70 of the sixteenth embodiment is formed between the reinforcing layers 22, 24. The second layer 75 in accordance with the second region 71 of the sixteenth embodiment is formed or deposited on the first layer 74 and partially extends at its edges in the transverse direction X, on the side of the reinforcing layers 22, 24 that is opposite to the outer wall 14. The first layer has a thickness d331 and the second layer has a thickness d332 in the vertical direction Y. The total thickness d333 preferably corresponds to m thickness d33, but may be larger or smaller.

Preferably, the first layer 74 and the second layer 75 are interconnected by means of an adhesion promoter 76 applied between the two layers and / or are preferably formed together by coextrusion. By means of reinforcing layers 22, 24 and a two-layer diffusion barrier layer 266, which is connected diffusion-impermeable to them, a diffusion barrier is created.

The diffusion barrier layer 266 in accordance with the twenty-first form of execution may take other forms. It can be formed, for example, in accordance with the forms of execution from the fifteenth to nineteenth. That is, the diffusion barrier layers 266 depicted in the fifteenth to nineteenth embodiments may also be made of a first layer of EVON material and a second layer of PP or PE, respectively. Preferably, the first EVON material layer 74 is suitably located between the second polyolefin layer 75 and the outer wall 14 so that it is protected against contact with water / steam. The first layer 74 and the second layer 75 can also be rearranged. That is, the first layer 74 can be formed on the side opposite to the outer wall 14 of the second layer 75, and the second layer 75 can be applied directly to the outer wall. True, in this case, the first layer 74 of EVON material is not protected from water or water vapor.

Further, for example, in the embodiment shown in FIG. 17G), a PP / PE layer may be applied to the diffusion barrier layer 266 of EVON material between the reinforcing layers 22, 24 to protect the diffusion barrier layer 266 of EVON material from contact with water / steam. The twentieth embodiment shown in FIG. 18 can also be modified by applying a layer of polyolefin (for example PP or PE) on the outer wall 14 between the reinforcing layers 22, 24. Due to this, the walls of the EVON material would be protected from contact with water / water vapor so that optimal diffusion impermeability would be ensured.

In addition, more than two layers of EVON / PP / PE may be provided.

Distinctive features of different forms of execution can also be combined with each other. In addition, in embodiments from the first to the twentieth, the reinforcing layers may be formed not symmetrically to each other with respect to the plane of symmetry L. The first reinforcing layer may have a different thickness / strength compared to the second reinforcing layer or may be formed from a different material. The first or second reinforcing layer may have an extension section, while, accordingly, the other may not have an extension section. Reinforcing layers can also run only along the side walls, and a diffusion barrier layer for joining the two reinforcing layers can run along the entire outer wall. The reinforcing layers can optionally also partially lie in the side walls or in the outer wall, but they are always connected to the diffusion-barrier layer on the outer wall.

The first or second reinforcing layer may extend over a larger partial area on the outer wall than, respectively, the other reinforcing layer. That is, the distance from the central region to the first side wall may be greater than the distance to the second side wall, and vice versa.

Therefore, the central region does not have to be located in the middle between the side walls. Due to the off-center arrangement of the central region, heat transfer through the spacer profile can be reduced. Heat transfer is reduced, first of all, if the central region is closer to the "warm", that is, the inner sheet.

The diffusion barrier layer may be formed by overlapping with the first and / or second reinforcing layer. That is, for example, the diffusion barrier layer 26 shown in the first to thirteenth embodiments, which after extrusion is applied in the central region directly onto the outer wall 14, can also be partially applied to the first and / or second reinforcing layer 22, 24. Therefore the diffusion barrier layer can, at least partially, monolithically lie along the first reinforcing layer, and along the second reinforcing layer, and between both along the outer wall. However, according to the design, the diffusion barrier layer extends only over the area located directly on the outer wall, which is not covered by the first or second reinforcing layer. Due to the overlap, a particularly diffusion-impermeable joint is formed between the reinforcing layers 22, 24 and the diffusion-barrier layer 26.

Alternatively to the groove, the side walls or their regions may also have regions which can be formed so that the groove can be neglected. This can be achieved, for example, due to the fact that the side walls or their regions are formed more thin-walled than others. Optionally, extension sections may also be discarded (see FIG. 11).

As an alternative to coextruding the reinforcing layers with the hollow profile body, the reinforcing layers can also be applied after extrusion of the hollow profile body directly onto the hollow profile body, for example by means of an adhesion promoter or adhesive. In addition, the area provided for the reinforcing layer and / or the diffusion barrier layer on the hollow profile body can be formed so that after applying the reinforcing layers and / or the diffusion barrier layer, there are no protrusions at the edges or transitions between them. That is, the areas on which, for example, reinforcing layers are applied, are already formed during the extrusion of the hollow profile body in the form of recesses on it. Accordingly, reinforcing layers and / or a diffusion barrier layer are introduced into these recesses.

The hollow body of the profile can be made trapezoidal, square, diamond-shaped or otherwise, depending on its type. Concave irregularities can take other forms, for example, they can form a double protrusion, protrude asymmetrically, etc. In another way, a spacer profile can also be made, first of all, so that the side walls are not the most extreme in the transverse direction X walls intended to fit onto the sheets. A similar implementation could be performed, for example, as follows: the spacer profile has a wider inner wall compared to the outer wall. The side walls are not connected to the edges of the inner wall in the transverse direction X, but are somewhat offset in the transverse direction inward. The outer wall connected to the side walls, the side walls and the inner wall form a chamber. Additionally, on the edges of the inner wall in the transverse direction X, two other additional (sides) side walls are formed parallel to the side walls, which serve as supporting surfaces for the sheets. In a similar embodiment, the reinforcing layers are completely or partially made in or on additional outer walls, side walls and inner walls. The diffusion barrier layer diffusely impermeably connects the reinforcing layers to each other.

The thicknesses s1, s2 of the side walls 16, 18 and / or the outer wall 14 may be formed different from each other. The holes 34 can also be made asymmetrically with respect to the line of symmetry L, as shown in Fig. 15, only in the middle or only on one side relative to the transverse direction X. The holes can be arranged in the longitudinal direction Z evenly or unevenly. The holes can be made relative to the transverse direction X in one row or in several rows. At least partially, another reinforcing layer of metallic material may be provided in or on the inner wall. Extension sections can be curved in any form, bent at an angle, etc. or are formed not symmetrically with respect to each other. The camera can also be divided by means of partitions into several cameras. The cross section of the reinforcing layers does not have to be constant, but can also have a profiled shape so that they are even better connected to the hollow body of the profile. First of all, for example, thickenings or grooves can be provided. Shown in the execution forms from the first to the fourth groove 32 and concavity 21, 121 are optional distinguishing features, which, depending on the execution of the hollow profile body, may be discarded.

The first height h1 of the hollow profile body 10 in the vertical direction Y is preferably equal to between 10 mm and 5 mm, more preferably between 8 mm and 6 mm, namely, for example, 6.85 mm, 7.5 mm and 8 mm.

The second concavity height h2 21 in the vertical direction Y is preferably equal to between 1 mm and 0.05 mm, more preferably between 1 mm and 0.1 mm, namely, for example, 0.5 mm, 0.8 mm and 1 mm.

The third concavity height h3 121 in the vertical direction Y is preferably between 1.5 mm and 0.09 mm, more preferably between 0.5 mm and 0.05 mm, even more preferably between 0.3 mm and 0.07 mm, namely for example 0.1 mm, 0.12 mm and 0.15 mm.

The first width b1 of the profile hollow body 10 in the transverse direction X is preferably equal to between 40 mm and 6 mm, more preferably between 20 mm and 6 mm and even more preferably between 16 mm and 8 mm, namely, for example, 8 mm, 12 mm and 15 , 45 mm.

The first distance a1, which corresponds to the second width b2, in the transverse direction X is preferably between 15 mm and 2 mm, more preferably between 8 mm and 5 mm, namely, for example, 5 mm, 6 mm and 8 mm.

The third width b3 of the diffusion barrier layer 266 is preferably equal to between 35 mm and 2 mm, more preferably between 20 mm and 2 mm, even more preferably between 12 mm and 5 mm, namely, for example, 6 mm, 7 mm and 9 mm.

The first thickness d1 of the first reinforcing layer 22 of metallic material is preferably equal to a value between 0.5 mm and 0.01 mm, more preferably between 0.2 mm and 0.01 mm, namely, for example, 0.1 mm, 0.05 mm and 0.01 mm.

The second thickness d2 of the second reinforcing layer 24 preferably corresponds to the first thickness d1.

The third thickness d3 of the diffusion barrier layer 26 of the metal material is preferably equal to a value between 0.09 mm and 1 nm, more preferably between 0.02 mm and 5 nm, and even more preferably between 0.01 mm and 10 nm, namely, for example, 0 , 01 mm, 0.001 mm and 10 nm. The third thickness d33 of the diffusion barrier layer 266 of EVON material is preferably equal to between 0.01 mm and 2 mm, more preferably between 0.05 mm and 0.8 mm, and even more preferably between 0.1 mm and 0.3 mm, namely for example 0.1 mm, 0.2 mm and 0.3 mm.

The thickness d331 of the second layer of PP or PE is preferably equal to between 1.2 mm and 0.1 mm, more preferably between 1.0 mm and 0.5 mm, namely, for example, 0.5 mm, 0.6 mm and 0.7 mm

The thickness d332 of the first layer 74 of EVON material is preferably equal to a value between 0.01 mm and 2 mm, more preferably between 0.05 mm and 0.8 mm, and even more preferably between 0.1 mm and 0.3 mm, namely, for example 0.1 mm, 0.2 mm and 0.3 mm.

The first length 11 of the extension section in the cross section X is preferably 0.05 b1 <11 <0.8 b1, more preferably 0.1 b1 <11 <0.5 b1 and even more preferably 0.1 b1 <11 <0.2 b1 mm.

The first thickness s1 of the side walls 16, 18 and the outer wall 14 is preferably equal to a value between 1.2 mm and 0.2 mm, more preferably between 1.00 mm and 0.5 mm, namely, for example, 0.5 mm, 0, 6 mm and 0.7 mm.

The second thickness s2 of the inner wall 12 is preferably equal to a value between 1.5 mm and 0.5 mm, namely, for example, 0.7 mm, 0.8 mm, 0.9 mm and 1 mm.

The first length 11 in the cross section is less than b1 / 2.

It is especially emphasized that all the distinguishing features shown in the description and / or in the claims should be considered for the purpose of the initial disclosure, as well as for the purpose of limiting the claimed invention, regardless of the combination of distinguishing features in the forms of execution and / or in the claims as separate independent of each other. It is especially stated that all ranges instructions or instructions on groups of units disclose any possible intermediate value of a subgroup of units for the purpose of initial disclosure, as well as for the purpose of limiting the claimed invention, primarily also as the boundaries of the indication of ranges.

LIST OF REFERENCE NUMBERS

one spacer profile 10 hollow body profile 12 inner wall fourteen outer wall 16 first side wall eighteen second side wall twenty camera 21, 121 concavity 22 first reinforcing layer 24 second reinforcing layer 25 central area 26, 266 diffusion barrier layer 27 diffusion barrier 28 extension section 29th extension bend thirty extension groove 31 receiving area 32 groove 34 hole 35 cutout 36 crossbar 40 connecting section 70 first area 71 second area 72 overlapping area 73 solid plane 74 first layer 75 second layer 76 adhesion promoter

Claims (25)

1. A spacer profile for use in an expansion frame (50) of an insulating glass for door, or window, or facade elements, which has sheets (51, 52) with an intermediate space (53) between them,
with a hollow body (10) of a profile made of plastic material with a chamber (20) for accommodating absorbent material,
- which extends in the longitudinal direction (Z) and
- which has an inner wall (12), which in the assembled state of the insulating glass unit is directed towards the intermediate space (53) between the sheets (51, 52) of the insulating glass unit and delimits the chamber, with the opposite inner wall (12) in the vertical direction (Y), which is perpendicular to the longitudinal direction (Z), the sides of the chamber (20), the outer wall (14) and to the side in the transverse direction (X), which is perpendicular to the longitudinal direction (Z) and the vertical direction (Y), the first side wall (16) and opposite the second bo a forging wall (18), which are connected to the inner wall (12) and to the outer wall (14) to form a chamber (20),
with the first reinforcing layer (22) of the first metal material with the first thermal conductivity (λ ₁ ), which extends monolithically along the first side wall (16) and optionally in the form of sections in it with a constant cross section perpendicular to the longitudinal direction (Z) and in the longitudinal direction (Z) and has a first thickness (d1),
with a second reinforcing layer (24) of a second metal material with a second thermal conductivity (λ ₂ ), which extends seamlessly along the second side wall (18) and optionally in the form of sections in it with an unchanged cross section perpendicular to the longitudinal direction (Z) and in the longitudinal direction (Z) with a first distance (a1) from the first reinforcing layer (22) and has a second thickness (d2), and
with a diffusion-barrier layer (26, 266) with a third thickness (d3, d33) and a third thermal conductivity (λ ₃ , λ ₃₃ ), which is formed on the outer wall (14) at least between the first reinforcing layer (22) and the second reinforcing layer (24) and diffusion-impermeably connected with them for the formation of a diffusion barrier (27),
wherein
the product of the third thermal conductivity (λ ₃ , λ ₃₃ ) and the third thickness (d3, d33) is less than the product of the first thermal conductivity (λ ₁ ) and the first thickness (d1), and less than the product of the second thermal conductivity (λ ₂ ) and second thickness (d2) and
the spacer profile is formed in such a way that when bending the spacer profile 90 ° around the axis parallel to the transverse direction (X) so that the inner wall (12) is relative to the bending radius further inside than the outer wall (14), the diffusion-barrier layer ( 26, 266) is essentially on neutral fibers. 2. The spacer profile according to claim 1, in which the diffusion barrier layer (26) consists of a third metal material and the third thickness (d3) is less than the first thickness (d1) and less than the second thickness (d2). 3. The spacer profile according to claim 2, in which the first reinforcing layer (22) has a first specific thermal conductivity in the range of 10 W / (m · K) ≤λ ₁ ≤50 W / (m · K) and a thickness (d1) in the range from 0.3 mm to 0.1 mm, the second reinforcing layer (24) has a second thermal conductivity in the range of 10 W / (m · K) ≤λ ₂ ≤50 W / (m · K) and a thickness (d2) in the range from 0.3 mm to 0.1 mm, and the diffusion-barrier layer (26) has a third specific thermal conductivity in the range of 14 W / (m · K) ≤λ ₃ ≤200 W / (m · K) and a third thickness (d3 ) in the range from 0.015 mm to 0.001 mm. 4. The spacer profile according to claim 1, in which the first reinforcing layer (22) has a first specific thermal conductivity in the range of 10 W / (m · K) ≤λ ₁ ≤50 W / (m · K) and a thickness (d1) in the range from 0.3 mm to 0.1 mm, the second reinforcing layer (24) has a second thermal conductivity in the range of 10 W / (m · K) ≤λ ₂ ≤50 W / (m · K) and a thickness (d2) in the range from 0.3 mm to 0.1 mm, and the diffusion-barrier layer (26) has a third specific thermal conductivity in the range of 14 W / (m · K) ≤λ ₃ ≤200 W / (m · K) and a third thickness (d3 ) in the range from 0.015 mm to 0.001 mm. 5. A spacer profile for use in the spacer frame (50) of an insulating glass for door, or window, or facade elements, which has sheets (51, 52) with an intermediate space (53) between them,
with a hollow body (10) of a profile made of plastic material with a chamber (20) for accommodating absorbent material,
- which extends in the longitudinal direction (Z) and
- which has an inner wall (12), which in the assembled state of the insulating glass unit is directed towards the intermediate space (53) between the sheets (51, 52) of the insulating glass unit and delimits the chamber, with the opposite inner wall (12) in the vertical direction (Y), which is perpendicular to the longitudinal direction (Z), the sides of the chamber (20), the outer wall (14) and to the side in the transverse direction (X), which is perpendicular to the longitudinal direction (Z) and the vertical direction (Y), the first side wall (16) and opposite the second bo a forging wall (18), which are connected to the inner wall (12) and the outer wall (14) to form a chamber (20),
with the first reinforcing layer (22) of the first metal material with the first thermal conductivity (λ ₁ ), which extends monolithically along the first side wall (16) and optionally in the form of sections in it with a constant cross section perpendicular to the longitudinal direction (Z) and in the longitudinal direction (Z) and has a first thickness (d1),
with a second reinforcing layer (24) of a second metal material with a second thermal conductivity (λ ₂ ), which extends seamlessly along the second side wall (18) and optionally in the form of sections in it with an unchanged cross section perpendicular to the longitudinal direction (Z) and in the longitudinal direction (Z) with a first distance (a1) from the first reinforcing layer (22) and has a second thickness (d2), and
with a diffusion barrier layer (266) consisting of at least a first layer (74) of diffusion-impermeable plastic material EVON with a third thickness (d33) and a third thermal conductivity (λ ₃₃ ), which is formed on the outer wall (14), at least between the first reinforcing layer (22) and the second reinforcing layer (24) and diffusion-impermeably connected to them to form a diffusion barrier (27),
wherein
the product of the third thermal conductivity (λ ₃₃ ) and the third thickness (d33) is less than the product of the first thermal conductivity (λ ₁ ) and the first thickness (d1), and less than the product of the second thermal conductivity (λ ₂ ) and the second thickness (d2) . 6. The spacer profile according to claim 5, in which the hollow body (10) of the profile and the diffusion-barrier layer (266) are made as a single unit from the diffusion-impermeable plastic material EVON. 7. The spacer profile according to claim 1, in which the third thickness (d33) of the diffusion barrier layer (266) is greater than the first thickness (d1) of the first reinforcing layer (22) and / or greater than the second thickness (d2) of the second reinforcing layer (24). 8. The spacer profile according to claim 5, in which the third thickness (d33) of the diffusion barrier layer (266) is greater than the first thickness (d1) of the first reinforcing layer (22) and / or greater than the second thickness (d2) of the second reinforcing layer (24). 9. The spacer profile according to claim 6, in which the third thickness (d33) of the diffusion barrier layer (266) is greater than the first thickness (d1) of the first reinforcing layer (22) and / or greater than the second thickness (d2) of the second reinforcing layer (24). 10. The spacer profile according to claim 1, wherein the diffusion barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow profile body (10). 11. The spacer profile according to claim 2, in which the diffusion-barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow profile body (10). 12. The spacer profile according to claim 3, in which the diffusion-barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow body (10) of the profile. 13. The spacer profile according to claim 4, in which the diffusion-barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow body (10) of the profile. 14. The spacer profile according to claim 5, in which the diffusion-barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow profile body (10). 15. The spacer profile according to claim 8, in which the diffusion-barrier layer (26, 266) is not formed between the first reinforcing layer (22) and / or the second reinforcing layer (24) and the hollow profile body (10). 16. The spacer profile according to claim 3, in which the diffusion-barrier layer (26, 266) extends along the part of the first reinforcing layer (22) facing the second reinforcing layer (24) and / or along the part facing the first reinforcing layer (22) the second reinforcing layer (24) perpendicular to the longitudinal direction and in the longitudinal direction. 17. The spacer profile according to claim 4, in which the diffusion barrier layer (26, 266) extends along the part of the first reinforcing layer (22) facing the second reinforcing layer (24) and / or along the part facing the first reinforcing layer (22) the second reinforcing layer (24) perpendicular to the longitudinal direction and in the longitudinal direction. 18. The spacer profile according to claim 15, wherein the diffusion-barrier layer (26, 266) extends along the portion of the first reinforcing layer (22) facing the second reinforcing layer (24) and / or along the portion facing the first reinforcing layer (22) the second reinforcing layer (24) perpendicular to the longitudinal direction and in the longitudinal direction. 19. The spacer profile according to one of claims 1 to 18, in which the first reinforcing layer (22) and the second reinforcing layer (24) are coextruded with the hollow body (10) of the profile. 20. The spacer profile according to one of claims 1 to 18, in which the side walls (16, 18) respectively have a connecting portion (40) from the corresponding side wall (16, 18) to the outer wall (14), which is relative to the chamber (20) is concave. 21. The spacer profile according to one of claims 1 to 18, in which the reinforcing sections (22, 24), when viewed in cross section (XY) perpendicular to the longitudinal direction (Z), have correspondingly profiled on their edges near the inner wall (12) extension section (28). 22. The spacer profile according to one of claims 1 to 9, in which the diffusion-barrier layer (26, 266) extends monolithically along the outer wall (14) perpendicular to the longitudinal direction (Z) and in the longitudinal direction (Z) only between the reinforcing layers ( 22, 24). 23. The spacer profile according to one of claims 1 to 18, in which the diffusion-barrier layer (266) has at least one second layer (76) of polyolefin, which is deposited on the first layer (75). 24. The spacer profile according to one of claims 1 to 18, which is bent around an axis parallel to the transverse direction (X) so that 90 ° is formed by bending to each other of the outer wall (14) and the inner wall (12) is relative to the radius bending further inside than the outer wall (14), in which the diffusion-barrier layer (26) between the reinforcing layers (22, 24) is essentially not compressed and not stretched. 25. An insulating glass unit with at least two sheets (51, 52) that are spaced opposite to each other to form an intermediate space between them (53), and with a spacer frame (50) from the spacer profile according to one of claims 1- 18, which is located between the sheets (51, 52) so that the lateral (X) sides of the side walls (16, 18) with the sides of the sheets (51, 52) facing them are glued with a diffusion-tight adhesive (61, 62) and the spacer frame (50) thus limits the intermediate space (53) to dy sheets.

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