DE19805265A1 - Spacer profile for insulating unit - Google Patents

Abstract

The present invention relates to a profiled spacer for a spacing frame which is placed in the edge area of an insulation glazing assembly for forming an intermediate spacing between window panes. Said spacer comprises a chamber (10) for receiving hygroscopic materials and having at least one support leg (30, 36) resting on the inner surface of the pane at least on one side of said chamber, wherein said leg is connected to the chamber by a bridge section (32, 34). This profiled spacer is characterised in that its profiled body is made of a low thermal conductivity material capable of resilient and plastic deformation. The support leg at least is further connected by material connection to a reinforcing layer (40) capable of plastic deformation.

Description

The present invention relates to a spacer profile for a spacer frame, in the edge region of a Isolierschei unit to form a space between the panes with a chamber for holding hygroscopic materials and with at least one abutment web for engagement with a Scheibenin nenseite on at least one side of the chamber, which has a Bridge section is connected to the chamber.

The discs of the insulating unit are in the context of the inven usually glass panes of inorganic or organic glass Glass, but without the invention being limited thereto. The discs can be coated or otherwise finished be to the insulating unit special functions, as he increased thermal insulation or sound insulation, to lend.  

Spacer frames have as the most important task, the discs to keep a Isolierscheibeneinheit at a distance, the mechani To ensure the strength of the unit and the Scheivenzwi protection against external influences. Especially at Iso lierscheibeneinheiten with high thermal insulation is to be determined that the heat transfer characteristic of the edge bond and there with the spacer frame or spacer profile which he is made, requires special attention. An Ver deterioration of the thermal insulation of a Isolierscheibeneinheit in Edge area in particular by conventional metallic spacers has been proven several times. Clearly visible is the deteriorated thermal insulation in the area of the edge bond Condensation on the edge of the inner pane at low temperatures temperatures. It is generally desired to avoid such Condensation also at low outside temperatures the tempera in the edge bonding area on the inner pane as high as possible hold. Developments in this direction are under the term "warm edge" techniques have become known.

There are for some time in addition to metallic Abstandpro also used spacer profiles made of plastic to the exploit low heat conduction of these materials. plastic However, profiles have the disadvantage that they only under high Expense or not at all for the production of one-piece spacers frame bend. In general, therefore, be plastic professionals le to straight rods in the dimensions of the respective insulation sliced unit corresponding dimensions and by several Corner connectors connected together to form a spacer frame. Also, such plastics usually have a comparison to metal low diffusion tightness. With spacer pro Plastic filing must therefore sicherge by special measures be placed that in the environment existing humidity does not penetrate into the disk space to a degree that the Absorption capacity of the spacer profiles usually Dehumidifier is soon exhausted and the insulation disk unit is impaired in its functionality.  

Furthermore, a spacer profile must also prevent filling gases from the space between the panes, such as argon, Kryp clay, xenon, sulfur hexafluoride, escape from this. Vice versa is nitrogen in the ambient air, oxygen, etc. do not enter the disc space. As far as fol This is what both talk about diffusion-tightness Vapor diffusion tightness as well as gas diffusion tightness for the gases mentioned.

To improve the vapor diffusion tightness proposes DE 33 02 659 A1 before, a spacer profile made of plastic with a To provide vapor barrier by the plastic profile on jeje nigen surface, which in the installed state by the disk between away, a thin metal foil or a metallized one Plastic film is applied. This metal foil must the Spanning the space between the panes as completely as possible so that the desired Dampfsperreffekt occurs. The disadvantage here is al lerdings that the metal foil a way of high thermal conductivity from one pane of the insulating unit to the other. The by using a plastic as a profile material he reached effect of reducing the thermal conductivity of the edge ver bunds will be significantly reduced.

Other spacer profiles, such as the one above meet the "warm edge" conditions, use special Stainless steels with compared to other metals it reduces heat meleitung as profile materials. Examples are in "Glaswelt" 6/1995, page 152-155, called. The produced from it Spacer frames are made in one piece and are at all Corners closed.

A spacer profile of the type mentioned is from the DE 78 31 818 U1 known. The using a sealing adhesive with The disks to be connected to the disks of the insulating disk unit ge, called there flanks, form the point of force for a specially designed, fixing the system webs during bending  Bending tool. The spacer profile consists of one unit material, which apparently only by means of the specified Vorge can be bent at right angles, presumably from one Metal. Statements about thermal insulation or even measures for improvement tion of thermal insulation are not disclosed in the publication men.

It is the object of the present invention, on a large scale bar cost-producible spacer profile available supply, which is highly heat-insulating, wherein from a such spacer profile simply a one-piece Abstandhal the frame is to be produced, for which the profile is cold bendable, so in particular with at most low heating so bendable should be that disturbing deformations do not occur. It should the spacer profile preferably also be able to Rela Live movements of the glass sheets, for example by internal pressure changes or certain shear stresses, in limited order to allow fang.

This task is accomplished by a spacer profile with the features of claim l solved.

According to the invention it is provided that the profile body of the distance holder profile made of an elastically-plastically deformable, bad thermally conductive material is formed, and that at least the Anla web with a plastically deformable reinforcing layer fabric is conclusively connected.

Profile body comprises by volume the majority of the Abstandhal terprofils and gives it its cross-sectional profile. He embraces in particular the walls of the chamber, the bridge sections and the Bearing webs.

Elastic-plastically deformable materials means such Materia Lien, where after the bending process elastic restoring forces are effective, as is typically the case for plastics,  being a part of the bend over a plastic, not reversible Deformation takes place.

Plastically deformable materials include such materials, in which after deformation virtually no elastic return act as it typically when bending metals over the yield point is the case.

By cohesively connected is meant that profile body and the plastically deformable layer permanently connected to each other the, for example, by coextruding the profile body with the plastically deformable layer, or by a separate Auflami kidney the plastically deformable layer, optionally over a primer, or the like techniques.

As poor heat-conducting or heat-insulating materials sol those are understood which have a German meaning to metals Lich, d. H. at least a factor of 10, reduced heating efficiency show value. The Wärmeleitwerte λ are typically in the Magnitude λ of 5 W / (m.K) and below, they are preferred less than 1 W / (m.K) and more preferably less than 0.3 W / (m.K).

Surprisingly, it has been found that already by amplifying kung only the contact bar of the spacer profile ela Stisch-plastically deformable material with a plastically ver malleable reinforcement layer a good cold bendability of the pro fils can be achieved. The sandwich composite thus formed he testifies to the properties of the plastic materials and the Profile contour a high bending resistance torque. This is indeed high bending forces, but provides in the bent state for a low springback and a high cornering stiffness and results rigid, easy to handle spacer frame. The elastic return The force of the profile body material can thereby only slightly effective.

The layer thickness of the reinforcing layer is dependent on the egg  characteristics of the concrete materials used in the profile body and adjust the reinforcing layer so that after a Bie process, the bending achieved is essentially maintained, that is, the springback after a bend by 90 ° all if only a few degrees, maximum about 10 °. The amplifiers kungsschicht must not be a closed layer, but can for example, be broken like a net.

Preferably, the profile body at least one to its outside side open U-shaped cross-sectional area, whose legs from an abutment web and the adjacent side wall of the chamber be formed and whose basis of the connecting Brüc kenabschnitt is formed. Outside refers to the in Installation state away from the space between the panes of the Pro filkorpus.

More preferably, the legs of the U-shaped cross-section range a height of at least 2 times, preferably at least 3 times and more preferably at least 5 times the width of the base is.

In a particularly preferred embodiment of the invention the reinforcing layer on the contact surface of the contact web is assigns. The contact surface is in the installed state of Scheibenin NEN side facing surface of the contact bar.

In a further embodiment, the reinforcing layer is on the bearing surface opposite chamber side surface of the Investment jetty arranged.

It is understood that in each embodiment, the ampl kungsschicht is normally at least over the largest part the height of the contact bridge and extends over its entire length.

Preferably, the profile body with a substantially over its entire width and length extending reinforcing layer  cohesively connected.

The invention is based on the finding that in this case Although the reinforcing layer for heat conduction from a disc contributes to the other. By the inventive contour specification of but poorly thermally conductive material of the profile body is the Way of high thermal conductivity, passing through the reinforcing layer is formed, compared to conventional profiles greatly extended, so that the thermal insulation out of the spacer profile equipped insulating unit in the area of the edge bond is significantly improved by the invention.

Preferably, in particular if the profile body material itself does not have sufficient diffusion tightness, Ver strengthening layer at least in the area of the walls of the chamber and the Bridge sections, but normally over their entire area, formed diffusion-tight.

Advantageously, the reinforcing layer on the outside of the Profile body arranged or close to this at least partially in embedded the profile body. Preceded by the profile carcass bene geometric design of the reinforcing layer is formed large arch-preserving bending resistance moment, resulting in cold bending contributes without disturbing deformations.

The bending resistance torque can be increased in particular thereby be that the reinforcing layer on the chamber side surface of the contact bar on the outside of the verbun with the plant web which bridge section as well as on the outside of the plant web is arranged adjacent to the side wall of the chamber, wherein the Reinforcing layer at least in the region of the bridge section and the side wall of the chamber to be diffusion-tight must waive if additional measures to inhibit diffusion should be.

Particularly preferred is when the reinforcing layer of the  Contact surface of the contact bar over its chamber-side surface, the outside of the bridge connected to the dock cut, the outside of the adjacent sides of the chamber as well the outside of the outer wall of the chamber extends continuously, in which case the reinforcing layer is at least in the range the bridge section and the side wall of the chamber diffusion must be tight. Through the meander created thereby shaped course of the reinforcing layer in this particular be preferred embodiment, a large arch preserving Flexural modulus. Although this has greater bending forces for Fol ge, but ensures in the bent state for a particularly low Springbacks and a great corner stiffness. The elastic return Force of elastic-plastically deformable material of the Ab Standhalterprofils can thereby practically not be effective.

The spacer profile is for example by an extrusion simple process. After applying the reinforcement layer, the profile can be cold bent. For this purpose are conven Liche Biegeanlagen suitable without significant modifications. A Fixation of the system webs during bending, as in the prior art, is not required in the context of the invention. After the bending pro The contact webs do not show any disturbing deformations.

Advantageously, the chamber is central in the spacer profile arranged on both sides of the chamber at least one Anla is provided. This symmetrical design carries po to assist in compensating for relative movements of the discs.

The chamber may in cross-section substantially polygonal, in particular be special rectangular or trapezoidal. Corner-free, for example wise oval, configurations of the chamber cross-section can even if provided. It is understood that the term "chamber" in addition to hollows closed on all sides and trough-like profile forms.

According to an advantageous embodiment is in the spacer  Profile of the bridge section for connecting the at least one An lagestes set in a corner of the chamber. That's it particularly advantageous for the bending behavior and the thermal insulation, if the bridge section at one near to the disc space corner is set. But it is also conceivable that Bridge section for connecting the at least one contact web in Center area of one of the disks when installed To arrange unit facing side walls of the chamber.

Depending on the individual design, it may equally be advantageous, the height of the contact webs larger, smaller or in the essentially equal to the height of the adjacent side of the chamber choose. To create a large contact surface with the discs, It may be advantageous, the system webs as far as possible over the To protrude chamber. It will also be beneficial be, the system webs parallel to a side wall of the chamber assign. Shorter jibs improve contact between the externally applied mechanically stabilizing sealant too the discs.

But it is also possible, the contact bars under a positive or to arrange negative angles to a side wall of the chamber, for example, in the range of -45 ° to + 45 °, based on the Longitudinal center axis of the chamber cross-section, can lie. hereby If necessary, the spring action of the spacer profile ver be improved.

The contact strips can also have at least one contact rib sen. Such Kontaktrippe is in the normal case substantially orthogonal to the plant jetty, so that when installed a defined distance between the landing stage and the ticket is set.

As materials for the reinforcing layer, preferably one Thermal conductivity λ has <50 W / (m.K), have poor heat dissipation de metals such as especially tinplate or stainless steel as beneficial  pointed out, these materials, for example in the form of Foils on the profile body of the spacer profile stoffschlüs be applied or laminated on a primer can. Tinplate is an iron sheet with surfaces tin coating, suitable stainless steel grades are e.g. 4301 or 4310 after the German steel key.

As has been found advantageous when between amplifiers kungsschicht and profile body in terms of strength of Ver nationwide a peel value (force / bond width) of ≧ 4 N / mm at egg a 180 ° peel test on the finished product is present.

The needed for the diffusion-tightness of the reinforcing layer Steam and gas barrier capability in combination with the invention desired mechanical behavior can be achieved if the Reinforcing layer when using tinplate a thickness of less than 0.2 mm, preferably at most 0.13 mm. Becomes Stainless steel used, even lower layer thicknesses are possible, namely less than 0.1 mm, preferably at most 0.05 mm. there the minimum layer thickness will have to be chosen so that the geforder te stiffness of the spacer profile is achieved and the Dif fusionsdichtigkeit also after bending, especially in the bend areas is preserved. For the specified materials is a minimum layer thickness of 0.02 mm is required.

Depending on the way how the spacer profile finally integrated into the insulating unit, it may be advantageous which are sensitive to mechanical and chemical influences Reinforcing layer at least part of its exposed side wise to provide with a protective layer. This can for example wise consist of a paint or plastic. It is, however possible, the reinforcing layer with a thin layer of the heat-insulating or poorly heat-conducting material of Ab Standhalterprofils to provide and thus the layer at least To embed in some areas in this material.  

It is preferred if the layer formed by the reinforcing layer Way of high thermal conductivity from one disk to another at least 1.2 times, preferably more than 1.5 times, is preferred more than 2 times, and more preferably up to 4 times the Width of the disc space is.

With regard to the spring action while saving material The spacer profile can be optimized when the clearance Width between a jetty and the adjacent wall of the Kam more than 0.5 mm. Such a minimum distance improved also the bending behavior of the spacer profile and facilitates the introduction of mechanically stabilizing sealant.

In general, the chamber, bridge sections and contact bars be formed with substantially the same wall thickness. When on is sought, the chamber volume to accommodate the hygroscopic To train as large a material as possible, everyone, but also one individual walls of the chamber are designed with reduced wall thickness his.

As suitable heat-insulating materials for the spacer profile, thermoplastic materials have a heat master value λ <0.3 W / (m.K), z. As polypropylene, polyethylene tereph thalate, polyamide or polycarbonate. The plastic can usual fillers, additives, dyes, agents for UV protection etc. included.

From a spacer profile according to the invention can in simp cher way one-piece spacer frame for Isolierscheibenein produced by only one connector close are. It is possible, using market over licher bending tools to bend the spacer profile to corners, even in these corner areas by plane surfaces Anlagestege on in the installed state of the Scheibeninnen Outline side facing page. The occurring during bending Deformations of the chamber are from the space between chamber sides  wall and adjacent landing stage. The good bendability the contact webs and the spacer profile in total after the Invention can probably be attributed to the fact that the cohesive composite of elastically-plastically deformable, would meisolierendem material, in particular of plastic, and pla deformable reinforcing layer, in particular of metal, even when cold bending for a good balance of forces in the material provides. Nevertheless, it may be advantageous to short-term the bending point to warm up, so that relaxation processes run faster. The Connector is designed either as a corner connector or closes as a straight connector the cold bent spacer profile in one arranged outside the corner connection area, for example in a disk edge center.

The invention further comprises a Isolierscheibeneinheit with at least two facing discs and at a distance holder frame from a spacer profile, as described above, wherein the spacer frame with the discs a Scheivenzwi defined in which the plant webs substantially over their entire length and height with the discs facing them inside are glued and in the light space between An lagestegen and chamber and at least the connection area to be adjacent disc inside with a mechanically stabilize the sealing material are filled.

According to an advantageous embodiment fills in the insulating the mechanically stabilizing sealing material is the free one Space to the outer peripheral edge of the disk unit substantially completely off. Commercially available insulating glass adhesive based on Polysulfide, polyurethane or silicone, for example, as proved suitable for the sealing material. As diffusion-tight Adhesive material for the bonding of the system webs with the disks inside is z. B. a butyl sealant based on polyisobutylene suitable.

In the following, the invention with reference to the drawings he continues  to be purified. Showing:

Fig. 1 a first embodiment of a spacer profile in cross section;

2 shows a second embodiment of the spacer profile in cross section.

3 shows a third embodiment of the spacer profile in cross section.

Figure 4 shows a fourth embodiment of the spacer profile in cross section.

Figure 5 shows a fifth embodiment of the spacer profile in cross section.

Figure 6 shows a sixth embodiment of the spacer profile in cross section.

Figure 7 is a detailed view of a spacer profile in contact with a pane of an insulating.

Figure 8 is a further detail view of a spacer profile in contact with a pane of an insulating.

Fig. 9 is a seventh embodiment of a spacer profile in cross section;

FIG. 10 is an eighth embodiment of a spacer profile in cross section;

11 shows a ninth embodiment of a spacer profile in cross-section.

FIG. 12 is a tenth embodiment of a spacer profile in cross section;

FIG. 13 is an eleventh embodiment of a spacer profile in cross section;

Figure 14 is a spacer profile in the installed state in an insulating window.

FIG. 15 an installation variant for a spacer profile in an insulating unit; FIG.

Fig. 16 is a cross-sectional profile of the prior art in cross-section; and

Fig. 17 shows the edge seal of an insulating spacer with the profile of Fig. 16.

Figs. 1 to 6 and 9 to 13 show cross-sectional views of spacer profiles. This cross-section normally does not change over the entire length of a spacer profile, except for production-related tolerances.

In Fig. 1, a first embodiment of a spacer profile according to the present invention is shown in a cross-sectional view. A chamber 10 having a substantially rectangular cross-sectional area is filled with a non-illustrated hy hygroscopic material, such as silica gel or molecular sieve, which receive through slots or perforations 50 which are formed in a wall 12 of the chamber 10 , moisture from the space between the panes can. At the corner regions of the wall 12 close bridge sections 32 and 34 , which in at 30 and 36 go over the webs. These contact webs 30 and 36 have a height which is less than the height of the adjacent side walls 14 and 16 of the chamber, and they extend parallel to these. In this embodiment of the spacer profile all walls, bridge sections and contact webs are formed in approximately the same thickness. The contact webs 30 , 36 are formed as stoffschlüssi ger sandwich composite of the elastically-plastically deformable Pro filkorpusmaterial and embedded therein plastically deformable Baren reinforcing layer 40 . The bending behavior in the region of the contact webs 30 , 36 is already significantly improved by the arrangement of the Ver strengthening layer 40 , in particular a deformation of the contact webs is avoided during bending. The material of the profile body is to make diffusion-proof in this variant. Alternatively, a non-illustrated diffusion-tight layer must be provided which extends further over the entire width and length of the profile.

The variant shown in Fig. 2 has a profile body accordingly Fig. 1. The plastically deformable reinforcing layer 40 is designed to be diffusion-tight and provided at the Einbauzu stood in the direction of the edge of the insulating unit facing outside of the spacer profile. It extends in wesentli surfaces of the contact surface of the first contact bar 30 to a disk inside to this around the chamber-side fa ce to the bridge portion 32 , then around the chamber 10 kenabschnitt to Brüc 34 and the investment web 36 around. The usual A construction for such a spacer profile would be such that the wall 12 faces the disc space, so that it would be humidified by the hygroscopic material inside the chamber 10 ent. Characterized in that the reinforcing layer 40, the Anla gefläche the contact webs 30 , 36 covered, a better adhesion assets to the adhesive used, with the later the spacer holder profile is glued to the insulating achieved. In addition, the bending behavior in the area of the contact webs is improved by the essentially all-sided cohesive sandwich composite. The effective path for the heat conduction is the point closest to the disk on the side of the first disk to the nearest disk on the side of the second disk with the spacer profile installed, ie the portions of the reinforcement layer 40 on the abutment surfaces of the contact webs 30 , 36 do not bear appreciably to the heat conduction path.

Another variant for the formation of the reinforcing layer 40 is shown in FIG . In this variant, the ampli kungsschicht 40 ends in front of the contact surfaces of the system webs 30 , 36th Furthermore, the wall 12 of the chamber 10 of Fig. 1 is almost completely replaced by a porous layer 52 , through which moisture from the space between the panes can enter the chamber 10 and can be absorbed by the hygroscopic material.

In the embodiment of Fig. 4, the contact webs 30 and 36 are extended so that they protrude beyond the outside of the chamber 10 , which has egg nen trapezoidal cross-section. This results in a further extended effective heat conduction path through the reinforcing layer 40 . The trapezoidal design of the cross-section of the chamber 10 increases the clear space between the chamber 10 and the abutment webs 30 and 36 , in the later when sembly of the insulating unit mechanically stabilizing sealing material can be introduced. In the installed state to the disc space facing surface of the wall 12 of the chamber 10 , a decorative layer 54 is applied, which extends over the bridge sections 32 and 34 away. Instead of the decorative layer 54 may also be provided a heat radiation reflection layer. Not shown are perforations as access to the interior of the chamber 10 .

In the embodiment of FIG. 5, the height of the contact webs 30 , 36 is selected so that it is substantially equal to the height of the respective adjacent side wall 14 , 16 of the chamber 10 . With the dimensioning of the clear width y between the contact webs 30 , 36 to each adjacent side wall 14 , 16 of the chamber 10 , the spring behavior of the spacer profile, so the elastic behavior to bending deformations or changes in position of the discs of the insulating unit in the installed state, can be adjusted. The contact webs 30 , 36 can be deformed so far, for example, until they rest against the adjacent chamber wall 14 , 16 . The reinforcing layer 40 runs around the exposed sides of the contact webs 30 and 36 around, so covers their Anla geflächen and chamber-side surfaces, but then, after the transition point at the bridge sections 32 and 34 in the material of the walls 14 , 18 , 16th embedded in the chamber 10 . Here an op timaler protection of the reinforcing layer 40 is achieved at least in the region of the chamber 10 .

The elasticity behavior of the contact webs 30 , 36 can also be adjusted if they, as in the embodiment of FIG. 6, are not parallel to the adjacent chamber walls, but at a certain angle α different from zero, to the adjacent wall 14 , 16 of FIG Chamber 10 . The contact webs 30 , 36 Kgs nen also be angled in order to ensure a good Anla gekontakt to the inside of the disk. Again, this refinement offers the opportunity to extend the gain layer 40 . The angle α, relative to the longitudinal center axis L of the cross section of the chamber 10 , is here about -30 ° or + 30 °.

The contact webs can also, with a correspondingly extended bridge section, be arranged at an angle to the chamber, as can be seen in the detailed view of FIG . In the installed state there is a line contact from the contact bar 30 to nenseite In a disc 102nd Moreover, the contact web 30 forms a non-zero angle P with the disc 102nd In this embodiment, effective for the heat transfer path of the vapor-diffusion-tight layer 40 may be shortened, if they can not be pulled over the entire surface of the disc 102 facing Anlageflä of the contact web 30 .

This disadvantage avoids the embodiment of FIG. 8 by a Kon taktrippe 38 is provided at the proximal end of the abutment web 30 to the bridge section. The contact rib 38 is located on the inner side of the disc 102 , the reinforcing layer 40 terminates un ter the contact rib 38th With the contact rib 38 , a defi ned distance between the contact bar 30 and disc 102 and thus a defined (minimum) thickness of the (not shown) adhesive medium layer between the plant web 30 and disc 102 set and the squeezing of the adhesive to the space between the pan can be avoided.

In Fig. 9, a seventh embodiment of the Abstandhalterpro fils is shown, in which the bridge sections 32 , 34 are arranged substantially on a transverse central axis of the chamber cross-section and the corresponding contact webs 30 , 36 extend beyond the side walls 14 , 16 of the chamber 10 also ,

A "double-T variant" of the embodiment of FIG. 9 is shown in FIG . Here are the bridge sections 32 , 34 again centrally on a side wall 14 and 16 of the chamber 10 is arranged, the contact webs 30 and 36 extend symmetrically there to.

In the embodiment of FIG. 11 corresponds to that of FIG. 2, wherein the chamber wall 12 of FIG. 2 is completely omitted, the chamber 10 is thus formed as a trough. The hygroscopic material is embedded in a polymer matrix 60 , the mer in the Kam 10 z. B. is held adhesive. In the dargestell th in Fig. 12 th, modified from Fig. 11 embodiment, the ampli kung layer 40 is guided by the contact surfaces of the contact webs 30 , 36 via the bridge sections 32 , 34 in the interior of the chamber 10 and thus encloses the hygroscopic material in the Polymerma trix 60 , which remains open in the installed state to Scheibenzwi's space.

In the embodiment according to FIG. 13, the walls 14 , 16 and 18 of the chamber 10 are formed with a smaller wall thickness than the bridge sections 32 , 34 or the contact webs 30 , 36 and the wall 12 . As a result, more hygroscopic material can be accommodated in the chamber 10 . When choosing the wall thickness must be taken into account that external forces on the discs of Iso lierscheibeneinheit from the spacer profile must be collected and that this must therefore have a sufficient Beulfestigkeit (stiffness) against this load across the space between the panes.

The spacer profile according to the invention can be bent into a frame ge and be assembled with matching cut discs to an insulating disc unit. FIGS. 14 and 15 show installation variants.

In the variant according to FIG. 14, the spacer profile 100 terminates with one side of the chamber essentially with the outer edges of the disks 102 , 104 . In order to protect the sensitive reinforcing layer 40 , it is provided on the outside with a protective layer 110 which extends at least so far that the not covered by adhesives 106 and sealing means 108 area is protected. The spacer profile 100 is first fixed by means of a Bu tylklebers 106 on the inner sides of the discs 102 , 104 . The remaining space is then filled with mechanically stabilizing sealant 108 .

The variant of FIG. 15 offers the possibility of greater mechanical stability and also improved protection of the United strengthening layer 40 against external influences by the Abstandhal terprofil 100 is more offset to the disc interior. The me chanically stabilizing sealant is pulled at least to the adjacent disk inside at its outer edge (a fold hatched areas 108 of FIG. 15). It is further preferred to completely fill the remaining space between the inner sides of the discs and the outer side of the spacer profile with mechanically stabilizing sealant (double hatched area 108 in FIG. 15).

example 1

Polypropylene Novolen 1040K with a wall thickness of 1 mm was used as a plastically-elastically deformable, heat-insulating material for the profile body of the spacer profile according to the Ausfüh tion form of FIG. 2, wherein as reinforcing layer a tinplate foil (technical name: Andralyt E2, 8/2, 8T57 ) was used with a thickness of 0.125 mm. The film was laminated to the profile body.

The chemical composition of this tinplate is: carbon 0.070%, manganese 0.400%, silicon 0.018%, aluminum 0.045%, phosphorus 0.020%, nitrogen 0.007%, balance iron. On the sheet, a tin layer with a basis weight of 2.8 g / m ^{2 was} introduced, which corresponds to a thickness of 0.38 microns.

The finished spacer profile had including the attachment webs have a width of 15.5 mm and a height of 6.5 mm. The light Width between chamber and contact bar was 1 mm in each case. The height the investment webs, each including the tinplate sheet was 4.6 mm. The tinplate foil was on one side with the plastic out a 50 microns thick adhesive layer based on polypropylene Provided. The chamber was with a conventional desiccant (Molecular sieve Phonosorb 555 from Grace) filled. To the shit Benzwischenraum was a double-row perforation in the Kam merwand provided.

The spacer profile was on 6 m long profile bars cut and then on conventional bending equipment weiterverar beitet. With the help of a bending machine of the company F.X. BAYER vom Type VE were made after cutting to measure spacer frame with four corners bent and the connection of the end pieces with a straight connector.

The spacer frame was made with two correspondingly large float Glass sheets in the usual way to a Isolierscheibeneinheit connected. One of the panes was covered with a heat protection layer an emissivity of 0.1. The insulating disk units were in a gas filling press with argon containing more filled as 90% by volume.  

The edge seal was made in accordance with FIG. 15, wherein the outside of the spacer (in particular the outer wall 18 of the chamber 10 , FIG. 2) was also covered. As the adhesive 106 , a butyl sealant based on polyisobutylene (width between glass 102 and adjoining landing bar: 0.25 mm, height: 4 mm) was used. The remaining free spaces were filled with a polysulfide adhesive 108 , wherein the outer wall coverage of the spacer holder was 3 mm.

Example 2

A spacer profile was produced according to Example 1, however, as a reinforcing layer, a stainless steel foil (type Krupp Verdol Aluchrom I SE) of thickness 0.05 mm was used.

The chemical composition of this stainless steel is: Chrome 19 - 21%, carbon maximum 0.03%, manganese maximum 0.50%, silicon maximum 0.60%, aluminum 4.7-5.5%, balance iron.

The characteristics of the materials used in Examples 1 and 2 are summarized in Table 1 below:  

Table 1

Example 3

An insulating glass panel unit was made with a conventional Me tallabstandhalter shown in FIG. 16 and an edge seal of FIG. 17.

The box-shaped hollow profile was made of aluminum with a wall thickness of 0.38 mm (manufacturer: eg Erbslöh). The profile had a width of 15.5 mm and a height of 6.5 mm. The spacer profile was bonded to the disks 102 , 104 with an isobutylene sealant at the plant side, the dimensions of the adhesive of Example 1 being used. The remaining joint was filled with a polysulfide adhesive 108 , the outer wall covering of the spacer was 3 mm.

The heat transport in the area of the edge bond was used for the in The insulating glass units described in Examples 1 to 3 with Hil  fe determined by heat flow simulation calculations. With the commercial currently available software program "WINISO 1.3" from Sommer Informatik GmbH were calculated two-dimensional temperature fields net. From the representation of the thus calculated isotherms, the below listed glass surface temperatures in the range of Edge composite determined. They are a measure of the quality of the Wärmei solierung. Higher temperatures in the edge area improve the k- Value and thus the thermal insulation of the window and reduce that Occurrence of condensation.

For the bills were next to values, for the manufacturer's information templates, the thermal conductivity data in accordance with DIN 4108 Part 4 or according to prEN 30 077. The data are in the following Table 2 is compiled.

Table 2

Material Thermal conductivity (W / m.K) Glass 1.0 aluminum 220 stainless steel 15 tinplate 35 * polypropylene 0.22 polysulfide 0.19 butyl 0.24 molecular sieve 0.13 argon 0.016 * Manufacturer's instructions

The calculations were made with the dimensions and geometries according to the individual examples, where as the outside temperature 0 ° C. and when the internal temperature was assumed to be 20 ° C.

The surface temperatures on the warm side in the area of the edge ver waistbands, each 0 mm, 6 mm and 12 mm from the glass edge are in Table 3 summarized.  

Table 3

The results illustrate the improved thermal insulation of the Spacer profiles according to the present invention compared the conventional aluminum spacer profile. The variant Po lypropylene with stainless steel foil is particularly well suited if emphasis is placed on high thermal insulation, while the Va riante polypropylene with tinplate foil advantages in terms of Bendability offers.

Insulating disk units according to Example 1 were the tests according to insulation standard prEN 1279 Part 2 and Part 3 subjected. The Requirements for long-term behavior, water vapor and gas tightness were fulfilled.

The in the above description, in the drawing and in The claims disclosed features of the invention can both individually or in any combination for the realization be essential to the invention.

Claims (10)

1. spacer profile for a spacer frame, which is to be mounted in the edge region of a Isolierscheibeneinheit to form a disc space, with a chamber ( 10 ) for receiving hygroscopic materials and at least one to web ( 30 , 36 ) for abutment against a disc inside at least one side the chamber ( 10 ), which is connected via a bridge portion ( 32 , 34 ) with the chamber ( 10 ), characterized in that the profile body of the spacer profile of an elastic-pla stic deformable, poorly thermally conductive material is formed, and that at least the Investment web ( 30 , 36 ) is materially connected to a plastically deformable reinforcing layer ( 40 ). 2. Spacer profile according to claim 1, characterized in that the profile body has at least one open to its outer side U-shaped cross-sectional area, the legs of a contact web ( 30 , 36 ) and the adjacent side wall ( 14 , 16 ) of the chamber ( 10 ) be and the base of which this connec denden bridge portion ( 32 , 34 ) is formed. 3. spacer profile according to claim 2, characterized in that that the legs of the U-shaped cross-sectional area a height have at least 2 times, preferably at least 3 times and more preferably at least 5 times the width of the Base is. 4. spacer profile according to one of the preceding claims, characterized in that the reinforcing layer ( 40 ) on the contact surface of the contact bar ( 30 , 36 ) is arranged. 5. spacer profile according to one of the preceding claims, characterized in that the reinforcing layer ( 40 ) on the chamber-side surface of the contact web ( 30 , 36 ) is arranged. 6. spacer profile according to one of the preceding claims, characterized in that the profile body is materially connected to a substantially over its entire width and length extending reinforcing layer ( 40 ). 7. spacer profile according to one of the preceding claims, characterized in that the reinforcing layer ( 40 ) at least in the region of the walls ( 14 , 16 , 18 ) of the chamber ( 10 ) and the bridge portions ( 32 , 34 ) is formed diffusion-tight. 8. spacer profile according to one of the preceding claims, characterized in that the reinforcing layer ( 40 ) is arranged on the outside of the profile body or near this at least partially embedded in the profile body. 9. spacer profile according to one of claims 2 or 3, characterized in that the reinforcing layer ( 40 ) on the chamber-side surface of the contact web ( 30 , 36 ), on the outside of the plant web ( 30 , 36 ) connected bridge portion ( 32 , 34 ) and on the outside of the abutment web ( 30 , 36 ) adjacent side wall ( 14 , 16 ) of the chamber ( 10 ) is arranged, and in that the reinforcing layer ( 40 ) at least in the region of Brückenabschnit TES ( 32 , 34 ) and the side wall ( 14 , 16 ) of the chamber ( 10 ) diffused sion is formed. 10. spacer profile according to one of claims 2 or 3, characterized in that the reinforcing layer ( 40 ) from the contact surface of the contact web ( 30 , 36 ) on the chamber-side surface, the outside of the plant web ( 30 , 36 ) bridge section connected ( 32 , 34 ), the outside of the adjacent sides ( 14 , 16 ) of the chamber ( 10 ) and the outside of the outer wall ( 18 ) of the chamber ( 10 ) extends continuously, and in that the reinforcing layer ( 40 ) at least in the region of the bridge portion ( 32 , 34 ) and the side wall ( 14 , 16 ) of the chamber ( 10 ) diffusely out forms.