EP0953715A2 - Spacer profile for insulating glazing unit - Google Patents

Abstract

On the outer surface of the metal foil (40) is a corrosion protection coating (44). This is a colored paint and/or a layer of chrome or chrome alloy. It is thin, being 2.5, 10 or best of all 20 times thinner than the metal foil.

Description

The invention relates to a spacer profile for a spacer frame, which in Edge area of an insulating pane unit to form a space between the panes is to be attached, with a profile body made of poorly heat-conducting material and with a Diffusion-tight metal foil that is firmly bonded to the profile body.

The washers of the insulating washer are normal within the scope of the invention Glass panes made of inorganic or organic glass, but without the invention would be limited to this. The panes can be coated or refined in some other way be to the insulating pane unit special functions, such as increased thermal insulation or Soundproofing.

The profile body of the spacer profile comprises poorly heat-conducting material by volume the main part of the spacer profile and gives it its cross-sectional profile.

By "cohesively connected" it is meant that the profile body and the metal layer are permanent are interconnected, for example by coextruding the profile body with the Metal layer or by a separate lamination of the metal layer, optionally over an adhesion promoter or similar techniques.

It has been used for a long time for the manufacture of highly insulating insulating pane units In addition to metallic spacer profiles, plastic spacer profiles are also used. to take advantage of the low thermal conductivity of these materials.

In the context of the invention, poorly heat-conducting materials are to be understood as those which have a significantly lower, ie at least a factor of 10, lower thermal conductivity than metals. The thermal conductivity values λ for such materials are typically of the order of magnitude 5 W / (m * K) and below, preferably they are smaller than 1 W / (m * K) and more preferably less than 0.3 W / (m * K) . Plastics will usually fall under this definition.

However, plastics generally have a low level compared to metal Diffusion tightness. With spacer profiles made of plastic must therefore by special Measures are taken to ensure that the air humidity in the area is not in the space between the panes penetrates to such an extent that the absorption capacity of the Spacer profiles usually placed desiccant is soon exhausted and the Insulating pane unit is impaired in its functionality. Next must Spacer profile also prevent fill gases from the space between the panes, such as for example argon, krypton, xenon, sulfur hexafluoride, escape from this. Conversely, nitrogen, oxygen, etc. contained in the ambient air should not be in the Enter the space between the panes. As far as in the following we speak of diffusion tightness, this means both vapor diffusion tightness and gas diffusion tightness for the called gases.

To improve the vapor diffusion tightness it is known from DE 33 02 659 A1 Formation of the preamble of claim 1 was used, known a spacer profile made of plastic with a vapor barrier by clicking on the plastic profile on the one Surface that faces away from the space between the panes when installed, a thin metal foil or a metallized plastic foil is applied. This metal foil must span the space between the panes as completely as possible so that the desired one Vapor barrier effect occurs. As a rule, the metal foil extends into the area of Surfaces of the contact webs of the spacer profile, over which the profile is made using a Sealant layer is connected to the pane surfaces.

In the same context, EP 0 430 889 A2 proposes a spacer profile Provide plastic with a vapor diffusion-tight coating by immediately on the plastic profile on each side, which, when installed, from the space between the panes a thin layer, for example made of chrome or a chrome-nickel alloy, is applied by means of a physical coating process, for example by sputtering. These manufacturing processes are complex and only allow manufacturing extremely thin vapor diffusion-tight layers at a reasonable cost.

Nowadays, spacer profiles are preferably used as one-piece spacer frames manufactured, which are bent at three corners and where the connection of the end pieces over a corner connector inserted into the end pieces or a straight connector. Here one strives to carry out corner bending as easily as possible in terms of production technology, in particular without extensive prior heating. For those to be made The profiles of EP 0 430 889 A2 are not suitable for spacer frames. The ones there in thicknesses of 70 - 400 nm applied vapor diffusion-tight layers do not have the required Tensile strength.

To ensure the cold bendability of spacer profiles made from poorly heat-conducting materials spacer profiles have been developed in which the profile body is made of poorly heat-conductive, elastic-plastically deformable material with a plastically deformable reinforcing layer, preferably a metal foil, is integrally connected. This reinforcement layer can also be made diffusion-proof and the entire width of the Spanning the space between the panes, whereby the required diffusion tightness of the Spacer profile is reached. Such a spacer profile was named THERMOPLUS® TIS® for example in the brochure "Impulses for the future" of flat glass AG presented and is described in DE 298 14 768 U1. The reinforcement layer gives the spacer profile has good cold bendability for producing the above-mentioned one-piece spacer frame. However, it has been shown that the for Reinforcement layer used tinplate layer is insufficiently corrosion-resistant. So it was observed that the tinplate layer was occasionally already on arrival at the Insulating glass manufacturers were corroded in some areas if they were previously water or higher Was exposed to humidity.

It is the object of the invention, with a spacer profile made of poorly heat-conducting Material with diffusion-proof metal foil in a cost-effective way for an improved To provide corrosion protection. The invention is also intended to provide aesthetically enable attractive spacer profiles and especially for cold bendable Spacer profiles, e.g. according to DE 298 14 768 U1.

This object is achieved by a spacer profile according to claim 1. Beneficial Refinements are the subject of the dependent claims.

According to a first aspect, the invention provides that the diffusion-tight metal foil at least on the surface facing away from the professional body with a Corrosion protection coating is provided, which is a layer of chrome or a Chromium alloy comprises, whose thickness compared to the thickness of the metal foil by at least a factor of 2.5, preferably by at least a factor of 10 and more preferably by at least Factor 20, is lower.

Typically, the thickness of the layer of chromium or a chromium alloy is less than about a tenth of the thickness of the metal foil. The layer preferably has a thickness between 0.01 µm and 5 µm. This makes it extremely thin compared to the metal foil achieved that the heat conduction through the spacer profile by the application of Corrosion protection coating is not significantly increased, the additional costs low remain and the (cold) bendability of the spacer profile is not impaired. Here a pure chrome layer is preferably used. However, it is within the scope of the invention work with alloy additives that improve the properties of the chrome-based coating Modify as long as these additives do not contain more than 50 atomic percent do not significantly reduce the desired corrosion protection effect of the coating.

The metal foil preferably has a layer of chromium or one on both surfaces Chrome alloy on. With the additional layer on the side facing the profile body Surface can improve the adhesion of the film to the plastic of the profile body become.

It is understood that the chromium-containing layer is usually at least superficially oxidized. It is known that chromium can be easily oxidized, so that a freshly produced one comes into contact with it Chromium surface with oxygen quickly forms a thin passivating oxide layer, which then further progress of the oxidation is effectively prevented or greatly slowed down.

A further improvement in the adhesion of the metal foil to the profile body can be achieved if the chromium-containing layer has an adhesive layer on the side facing the profile body, in particular with an adhesive varnish. Adhesive varnishes in particular, which are suitable for the production of automotive decorative profiles from metal-plastic laminates are common and the typically applied in a thickness of about 5 - 10 microns, as well suited proven.

It can often not be prevented that the metal foil in the installed state of the Spacer profile can be seen in areas from the outside, in particular then, when the metal foil on the contact webs facing the inside of the pane of the spacer profile extends very far towards the space between the panes. The shiny metallic surface of the metal foil stands out from the matt surface of the mostly dark colored plastic profile body from conspicuously, so that tolerance-related Fluctuations in the position of the lateral ends of the metal foil are particularly visible. That is aesthetically unsatisfactory. It can also be detrimental and too potent Corrosion susceptibility if the metal foil - with or without a chromium-containing layer - the Is exposed to sunlight or other light sources.

It is therefore further provided according to the invention according to a second aspect that the metal foil at least on the surface facing away from the profile body with a Corrosion protection coating is provided, which comprises a colored lacquer coating, wherein whose thickness compared to the thickness of the metal foil by at least a factor of 2.5, preferably by at least a factor of 10. The varnish coating is advantageous applied in a thickness of 1 to 30 µm, usually with a thickness of 3 to 10 µm. It has It has been shown that with such a thickness applied to the metal foil lacquer coatings Achieved high corrosion resistance of the metal foil even under extreme conditions can be. The small thickness compared to the metal foil ensures that the additional costs remain low and the (cold) bendability of the spacer profile does not is affected.

Paint coating means in connection with the invention a thin, by spraying, Immersion or similar coating application applied coating from a liquid and / or powder-solid substance, which by chemical reaction and / or physical Change a wear-resistant, abrasion-resistant coherent film forms and at the same time a decorative and corrosion-preventing Function. The lacquer coating preferably essentially covers the respective surface all over. It has been shown that with such thin lacquer coatings a good and permanent protection against corrosion can be achieved, as this is not used even during cold bending Tending to crack.

The lacquer coating according to the invention is colored, which means that it has light and UV radiation highly absorbed and thus the metal foil against harmful light protects. Color means the one usually conveyed by the human eye Sensory impressions such as red, blue, green, white, black or mixtures, also different Levels of brightness and tints. The color of the lacquer coating is usually determined by the Additive absorbent pigments or other colorants produced. If the profile body out a colored plastic material, the color of the lacquer coating is preferably on adjusted the color of the plastic material of the profile body. Under aesthetic and technical It is particularly preferred when both the profile body and the Lacquer coating are colored black.

The lacquer coating is also preferred on the surface of the profile body facing the Metal foil applied. In this case, the varnish coating may also function of an adhesion promoter between the metal foil and the profile body.

The lacquer coating according to the invention is preferably applied to the surface via an adhesion promoter layer Metal foil applied. Adhesion promoters based on silane have proven particularly suitable exposed.

It may be production-related that the metal foil in the installed state of the Spacer profile extends to the space between the panes. Therefore, it is in the frame the invention, optionally exposed edges of the metal foil with a lacquer coating Mistake.

Plastic materials have proven to be particularly suitable for the production of the profile body emphasized how they are the subject of the as yet unpublished DE 198 59 866. This For example, materials contain 1% by weight based on RAL color 9004 selected color batches (black pigmentation).

The preferred coatings for the coating of the invention have been found surprisingly highlighted those with a binder based on polyurethane, Epoxy or rubber have been made. As very particularly suitable Lacquer coating materials have become those with a binder based on rubber, especially partially polymerized rubber, proven to connect rubber-containing plastic material with metals are suitable. The invention Varnish coatings show good bending behavior, so that they are suitable for cold-bendable profiles, in particular according to DE 298 14 768 U1.

For the paint coatings according to the invention it is important that they adhere well to the external gluing on insulating glass panes applied sealing adhesive, preferably those made of polysulfide, silicone or polyurethane. With the aforementioned This is the case with paints.

Lacquers with black pigmentation based on the RAL color are preferred 9004 used.

The proportion of binder and pigmentation is usually in the paints used at approx. 30 - 50% by weight. In addition to a corresponding proportion of conventional solvents, the Paints may also contain fillers and / or auxiliaries.

It is also within the scope of the invention to take the anti-corrosion measures after the first Aspect and to combine according to the second aspect and for example one Metal foil first with a layer of chrome or a chrome alloy and then with to provide a colored lacquer coating with the specified specifications. The metal foil can also consist of a layer with a corrosion protection coating Chrome or a chrome alloy and on the other surface with a Corrosion protection coating can be provided from a colored lacquer coating.

Above all, the inexpensive and easily deformable material for the metal foil is unfinished Iron sheet suitable. The iron sheet can optionally also be tinned or electrolytic be galvanized.

The metal foil should have a maximum thickness of 0.2 mm, preferably 0.08 to 0.13 mm, exhibit. The minimum layer thickness must be chosen so that the necessary Diffusion tightness in combination with the desired mechanical behavior (e.g. Cold bendability) can be achieved. Experience has shown that the minimum permissible value is included 0.02 mm for sheet iron.

The profile body is preferably a hollow profile with the formation of a desiccant chamber executed. The invention is particularly well suited for use in such Spacer profiles made of poorly heat-conducting plastic material, the contact webs for Have system on an inside of the pane, the bridge sections with a Desiccant chamber are connected, the diffusion-tight metal foil with the Contact surface of the contact webs, the surface of the surface facing away from the space between the panes Bridge sections and the outer surfaces of the walls facing away from the space between the panes the chamber is integrally connected (DE 298 14 768 U1).

Thermoplastic materials with a thermal conductivity have proven to be suitable materials with poor thermal conductivity for the profile body λ <0.3 W / (m * K) , for example polypropylene, polyethylene terephthalate, polyamide or polycarbonate. The plastic can contain conventional fillers, additives, dyes, UV protection agents, etc.

The following plastic materials are preferably used to manufacture the profile body: Material 1 : Material component Trade name Percentages by weight Polypropylene block copolymer with grafted polyethylene content Borealis BA 101 E natur from Borealis A / S, Lyngby, Denmark 73% Polypropylene with 20% by weight talc Borealis MB 200 U natur from Borealis A / S, Lyngby, Denmark 24% Material 2 : Material component Trade name Percentages by weight Polypropylene homopolymer Adstif 680 ADXP natur from Montell, Wesseling, Germany 5% Polypropylene block copolymer with grafted polyethylene content Borealis BA 101 E natur from Borealis A / S, Lyngby, Denmark 68% Polypropylene with 20% by weight talc Borealis MB 200 U natur from Borealis A / S, Lyngby, Denmark 24%

The plastic materials may also contain 1% by weight of one each Setting the RAL color 9004 suitable color batches (black pigmentation) and 2 % By weight of a UV stabilizer.

Figur 1

eine erste Ausführungsform eines Abstandhalterprofils im Querschnitt;

Figur 2

eine zweite Ausführungsform des Abstandhalterprofils im Querschnitt;

Figur 3

eine schematische Querschnittsansicht der diffusionsdichten Schicht; und

Figur 4

eine Querschnittsansicht eines Abstandhalterprofils in eingebautem Zustand in einer Isolierscheibeneinheit.

The invention will be explained in more detail below with reference to the drawing. It shows:

Figure 1

a first embodiment of a spacer profile in cross section;

Figure 2

a second embodiment of the spacer profile in cross section;

Figure 3

a schematic cross-sectional view of the diffusion-tight layer; and

Figure 4

a cross-sectional view of a spacer profile in the installed state in an insulating washer unit.

The cross section shown in Figures 1, 2 and 4 normally changes over the whole Length of a spacer profile, apart from manufacturing tolerances, Not.

In Figure 1 is a first embodiment of a spacer profile according to the present Invention shown. The black colored (RAL color 9004) plastic material (e.g. "Material 1" or "Material 2") manufactured profile body comprises an inner wall 12 which in installed condition facing the space between the panes, two for contact with the The inside of the pane is defined by side walls 20 and 22 and also forms contact webs an adjoining rear wall 18. Through the walls 12, 20, 22, 18 a Desiccant chamber 10 defined, which is later filled with hygroscopic materials. So that moisture from the space between the panes enters the desiccant chamber 10 can, 12 perforations 50 are provided in the inner wall. The side walls 20, 22 are each with an indentation 60 in their intended for contact with the inside of the pane Provide surfaces that are at a certain distance from the space between the panes facing end of the side walls 20, 22 begins and extends over their entire remaining Area extends. In the indentations 60 and on the outer surface of the rear wall 18 and the Transitional areas between the side walls 20, 22 and the rear wall 18 is one Diffusion-proof metal foil 40 made of 0.12 mm thick, one-sided, namely on the outside lying surface, provided with an anti-corrosion coating 44 iron sheet arranged, which is integrally connected to the profile body. The depth of the indentation 60 corresponds exactly to the thickness of the metal foil 40, so that that formed by the profile body Contact surface and the contact surface formed by the metal foil 40, on which at Production of the insulating washer unit a thin sealant layer, not shown here applied, lie exactly in one plane. The chemical composition of the The iron sheet used is (in percent by weight):

Carbon 0.070%, manganese 0.400%, silicon 0.018%, aluminum 0.045%, phosphorus 0.020 %, Nitrogen 0.007%, balance iron.

The anti-corrosion coating 44 comprises either a colored lacquer coating or one Layer of chrome or a chrome alloy. But it can also be a layer of chrome or a chrome alloy, to which a colored lacquer coating has also been applied.

The chromium-containing layer, for example of chromium 99.9 or of a chromium alloy predominantly containing chromium, can be applied, for example, by electroplating or another suitable coating method. As has already been mentioned above, it is normally oxidized on the surface. The chromium-containing layer is preferably applied with a basis weight of approximately 60-120 mg / m ² per surface, which corresponds to a layer thickness of approximately 0.01 μm.

If a lacquer coating is used for the anti-corrosion coating 44, it can for example with a black lacquer with a binder based on a partially polymerized rubber with the designation PC265 from the German company HÜHOCO, Wuppertal, which has roughly the same visual appearance as that black colored plastic material of the profile body. Between that about 5 µm thick coating of lacquer and the metal foil can, for example, be a PM02 adhesion promoter from the company HÜHOCO.

The embodiment shown in Figure 2 is based on a profile shape as it for example, DE 298 14 768 U1. Through walls 12, 14, 16, 18 one Desiccant chamber 10 defined for the later filling of hygroscopic materials, the connection between this chamber 10 and the space between the panes Perforations 50 is made. When installed to the system on the inside of the pane certain landing stages 30 and 36 are connected to chamber 10 via bridge sections 32 and 34 connected, spanning the space between the panes and the outer contour of the A diffusion-tight metal foil 40 is arranged following the profile body. The metal foil 40 is provided with an anti-corrosion coating 44. The metal foil 40 acts in the area of the Contact webs 30, 36 additionally guarantee the cold bendability of the profile Reinforcement layer.

A schematic sectional view through an embodiment variant according to the present Invention is shown in Figure 3. The diffusion-tight metal foil 40 consists, for example, of Iron sheet. On both surfaces of the metal foil 40 was covered by a suitable one Coating method the corrosion protection coating 44 according to the invention from a colored lacquer coating and / or a layer of chrome or a chrome alloy applied.

example 1

A 0.12 mm thick iron sheet with the technical designation "T 57 special chrome-plated ultrafine sheet ECCS / TFS" from Rasselstein Hoesch GmbH, Andernach, was used, with a chrome layer in the final state containing oxygen and a basis weight of 80-90 on both surfaces of the iron sheet mg / m ^{2 was} applied per surface, which corresponds to a layer thickness of about 0.01 µm. To improve adhesion, a 4629 adhesive varnish from HÜHOCO GmbH, Wuppertal, was applied to the surface of the chrome-coated iron sheet intended for connection to the polypropylene profile body in a thickness of approximately 8 μm. The iron plate pretreated in this way was mechanically brought into the desired shape and cohesively connected to the profile body formed therefrom by extruding plasticized polypropylene with a material thickness of approximately 1 mm.

A: Wasserlagerung über 168 h bei Raumtemperatur in entionisiertem Wasser.

B: Lagerung in feuchter Atmosphäre über 72 h bei 50°C, 100 % relative Luftfeuchte, Dampf aus entionisiertem Wasser.

For corrosion tests, a diffusion-proof metal foil according to the invention was applied to a 10 cm long and 1.6 cm wide spacer profile with a polypropylene profile body according to FIG. 2. For comparison purposes, an unprotected tinplate layer was also applied to a corresponding profile. Both profiles were subjected to the corrosion tests described below:

A: Water storage over 168 h at room temperature in deionized water.

B: Storage in a humid atmosphere for 72 h at 50 ° C, 100% relative humidity, steam from deionized water.

After completion of the tests, it was found that the surfaces of the invention metal foils either showed no visible corrosion or at most have slight traces of corrosion (rust) caused by brushing or Wiping could be removed completely. The surfaces of the unprotected tinplate on the other hand, showed large-scale signs of corrosion that could not be brushed off there was more to remove.

Example 2

It became a 0.12 mm thick iron sheet with the technical name TFS from the company Rasselstein, Neuwied, uses a 5 µm thick black lacquer coating on one side a varnish with a binder based on a partially polymerized rubber has been. The metal foil prepared in this way was after roll forming in the course of a Extrusion process via the above Adhesion promoter with one of the above as "Material 1" or "Material 2" marked plastic materials for spacer profiles according to Figure 2 cohesively connected so that the paint coating on the in the installed state to the outside facing surface of the metal foil was arranged.

1) Salzsprühtest 48 h gemäß DIN 50018.

2) Schwitzwasserlagerung in feuchter Atmosphäre über 168 h bei 50 °C, 100% relative Luftfeuchtigkeit, Dampf aus entionisiertem Wasser.

3) Wasserlagerung über 672 h bei Raumtemperatur.

A 10 cm long and 1.6 cm wide section was removed from the spacer profile for corrosion tests. Corresponding spacer profiles without lacquer coating with metal foils made of tinned iron sheet were also tested for comparison purposes. The profiles were subjected to the tests described below:

1) Salt spray test 48 h according to DIN 50018.

2) Condensation water storage in a humid atmosphere over 168 h at 50 ° C, 100% relative humidity, steam from deionized water.

3) Water storage for 672 h at room temperature.

After completion of the tests, it was found that the surfaces of the invention with a black lacquered metal foil, no visible corrosion showed. In contrast, the surfaces of the metal foils made of tinned iron sheet pointed especially after tests 1) and 3) for large-scale signs of corrosion with considerable damage to the metal foils.

The results illustrate the high corrosion resistance of the invention a corrosion coating from a chromium-containing layer or a colored one Painted metal foils compared to metal foils of the prior art Technology. The corrosion resistance can be increased even further if a layer made of chrome or a chrome alloy is combined with a colored lacquer coating. Surprisingly, the high corrosion resistance remains even after bending the spacer profiles provided with metal foils according to the invention in the course of Manufacture of one-piece spacer frames as in the usual later Fiddling with these completely preserved.

FIG. 4 shows a spacer profile 100 in the installed state between two panes 102, 104 of an insulating washer unit. The spacer profile 100 essentially corresponds the embodiment of Figure 2. The contact webs 30, 36 are over a sealant layer 106 connected to the inner sides of the disks 102, 104. The remaining space between the spacer profile 100 and the outer edges of the disks 102, 104 is also mechanical stabilizing sealing adhesive 108 filled. It has been shown that the Corrosion protection coating according to the invention (not shown here) on this very well Sealing adhesive 108 adheres.

1. Polysulfid Terostat 998 R der Fa. Teroson, Heidelberg, Deutschland

2. Silikon Q3-3362 der Fa. Dow Corning, Unterensingen, Deutschland

3. Polyurethan PRC 4429 der Fa. Courtaulds Aerospace, Glendale, USA

For adhesion tests, according to prEN 1279, part 6, so-called web adhesion samples with a length of 20 mm were produced from the spacer profiles manufactured for the above-mentioned corrosion tests and tested with the sealing adhesives listed below:

1. Polysulfide Terostat 998 R from Teroson, Heidelberg, Germany

2. Silicone Q3-3362 from Dow Corning, Unterensingen, Germany

3. Polyurethane PRC 4429 from Courtaulds Aerospace, Glendale, USA

At a load of 0.3 N / mm ² , no detachment of the examined three sealing adhesives from the corrosion protection coating of the metal foil was found for 10 minutes. Adhesive liability fully met the requirements.

The in the above description, in the drawings and in the claims Disclosed features of the invention can be used both individually and in any combination be essential for the implementation of the invention.

REFERENCE SIGN LIST

10th

Desiccant chamber

12th

Interior wall

14

Side wall

16

Side wall

18th

Back wall

20th

Side wall

22

Side wall

30th

Dock

32

Bridge section

34

Bridge section

36

Dock

40

Metal foil

44

Corrosion protection coating

50

Perforations

60

Indentations

100

Spacer profile

102

disc

104

disc

106

Sealant layer

108

Sealing adhesive

Claims (15)

Spacer profile for a spacer frame, which is to be attached in the edge region of an insulating pane unit to form a space between the panes, with a profile body made of poorly heat-conducting plastic material and with a diffusion-tight metal foil which is integrally connected to the profile body, characterized in that the metal foil (40) at least on the The surface facing away from the profile body is provided with a corrosion protection coating (44) which comprises a colored lacquer coating and / or a layer of chrome or a chromium alloy, the corrosion protection coating (44) having an at least a factor of 2.5, preferably at least a factor of 10 and more preferably has at least a factor of 20 less thickness in relation to the thickness of the metal foil (40). Spacer profile according to claim 1, characterized in that the metal foil (40) has a corrosion protection coating (44) on both surfaces. Spacer profile according to claim 2, characterized in that the Corrosion protection coating (44) at least on the one facing the profile body Surface is provided with an adhesive layer, in particular an adhesive varnish. Spacer profile according to one of claims 1 to 3, characterized in that the Metal foil (40) consists of tinned or zirconized iron sheet. Spacer profile according to one of claims 1 to 4, characterized in that the Metal foil (40) a thickness of at least 0.02 mm and at most 0.2 mm, preferred from 0.08 to 0.13 mm. Spacer profile according to one of the preceding claims, characterized in that that the profile body as a hollow profile with the formation of a desiccant chamber (10) is executed. Spacer profile according to claim 6, characterized by contact webs (30, 36) for System on the inside of a pane, which over the bridge sections (32, 34) with the Desiccant chamber (10) are connected, wherein the metal foil (40) with the Contact surface of the contact webs (30, 36) facing away from the space between the panes Surface of the bridge sections (32, 34) and the outer surfaces of the walls (14, 16, 18) the drying agent chamber (10) is integrally connected. Spacer profile according to one of the preceding claims, characterized in that that the layer of chrome or a chrome alloy Corrosion protection coating (44) has a thickness of at least 0.01 µm and at most 5 µm. Spacer profile according to one of the preceding claims, characterized in that that the profile body consists of a colored plastic material. Spacer profile according to claim 9, characterized in that the color of the Paint the corrosion protection coating (44) to the color of the Plastic material of the profile body is adapted. Spacer profile according to claim 10, characterized in that the lacquer coating the Corrosion protection coating (44) and the plastic material of the profile body black are colored. Spacer profile according to one of the preceding claims, characterized in that that between the varnish coating of the anti-corrosion coating (44) and the Metal foil (40) is arranged an adhesion promoter layer. Spacer profile according to one of the preceding claims, characterized in that that the lacquer coating of the anti-corrosion coating (44) has a thickness of 1 to 30 µm, preferably from 3 to 10 microns. Spacer profile according to one of the preceding claims, characterized in that that the paint coating of the anti-corrosion coating (44) from a paint with a Binder based on polyurethane, epoxy or rubber is made. Spacer profile according to claim 14, characterized in that the lacquer coating Corrosion protection coating (44) from a paint with a binder based on a partially polymerized rubber is produced.

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