EP2864567B2 - Insulating web for a compound profile for windows, doors or façade elements, and method for production of such an insulating web and compound profile having such an insulating web - Google Patents

Description

The invention relates to an insulating web for a composite profile for window, door or Fassedenelemente and to a method for producing such a Isolierstegs and on a composite profile with such a Isoliersteg.

Insulating webs for thermally insulated composite profiles for window, door or facade elements and composite profiles with such insulating bars are known in the art (eg DE 20 2007 016 649 U1 ). The WO 97/09504 A1 discloses such an insulating bridge and composite profile, each extending in a longitudinal direction. The insulating bars are designed as hollow chamber webs. In these hollow chamber webs, hollow chambers extend in the longitudinal direction, ie in such a way that in a cross section perpendicular to the longitudinal direction the hollow chambers have a closed cross section. The insulating bars are connected to the profile parts by rolling. Such hollow chamber webs with one or more hollow chambers are also known from the brochure "Standard Profiles 2010" of the TECHNOFORM BAU-TEC, eg the standard profile with the article number 299000 shows a hollow chamber profile with a hollow chamber and the hollow chamber profile with the article number 384200 shows a hollow chamber profile with three hollow chambers , More insulating bars with hollow profile are from the DE 42 38 75.0 A1 in the WO 97/09504 A1 known as the prior art known. In the DE 42 38 750 A1 the multi-chamber hollow sections are made of two parts with different wall thicknesses and welded, for example.

From the EP 1 580 388 A2 and the DE in 2009 023 883 A1 Each insulating bars are known with individual hollow chambers, which are assembled from two Isolierstegteilen. The two Isolierstegteile are designed so that the respective curl body are formed in two parts for rolling in grooves of the profile parts and can be plugged together. After curling the mating Isolierstegteile are held relative to each other in position. The recesses and projections for mating lie on a parting plane which runs centrally through the curl body and is located after the mating in the interior of the curl body.

From the EP 0 584 467 A1 elongated hollow sections are known which consist of at least two partial profiles which are extruded separately and then joined together.

From the WO 2008/119535 A1 insulating strips for composite profiles, window, door or facade elements are known which extend in a longitudinal direction and in which the Isolierstegkörper by the wall (s) of the Isolierstegkörpers continuous recesses, which are separated by ladder-like webs. This ladder-like design allows limited longitudinal displacement of the profile parts. The insulating web has a cover which is formed integrally with the Isolierstegkörper and can be clipped to the Isolierstegkörper and completely covers the recesses in the clipped state.

Insulating webs with one or more hollow chambers and method for introducing support foam in the same are from the EP 0 978 619 A2 known. The support foam is introduced either the front side or from two lateral sides or via lateral openings of the insulating bar. From the EP 1 347 141 A1 For example, an insulating web and a method for making such an insulating web without volume limitation are known for the foam used.

Other insulating bars and composite profiles with foams are from DE 100 35 649 A1 , of the DE 100 39 980 A1 , of the DE 10 2010 049 097 A1 , of the WO 2011/032193 A2 and the WO 2005/008011 A1 known. Roller shutter profiles for garages or roller shutters with foam-filled chambers are eg from the EP 0 671 536 A1 , of the DE 35 08 849 A1 and the DE 33 28 357 A1 known. The DE 30 33 206 A1 , the FR 2 950 668 A1 and the DE 195 32 125 A1 reveal further composite profiles and insulating bars.

Said prior art does not make it possible to produce at least partially thin-walled insulating webs for composite profiles made of plastic with a support foam in a simple, cost-effective and secure manner. Problems exist in particular in the powder coating of such webs from the prior art and / or when introducing the foam in hollow chamber webs, in particular with regard to the dimensional accuracy of the resulting insulating webs to be observed. Furthermore, said prior art does not allow to obtain modular insulating bars with easy to produce, different functionalities.

The object of the invention is to further develop the above-mentioned prior art and to solve the problems mentioned at least partially.

This object is achieved by an insulating web according to claim 1 or 3 or a method for producing such an insulating web according to claim 8 or a composite profile according to claim 9.

Further developments are specified in the dependent claims.

Fig. 1

eine Querschnittsansicht eines Verbundprofils mit herkömmlichen Hohlkammerisolierstegen;

Fig. 2

eine Querschnittsansicht eines Hohlkammerisolierstegs aus Fig. 1;

Fig. 3

eine Querschnittsansicht eines Details eines Verbundprofils mit zwei Profilteilen und einem herkömmlichen Isoliersteg, die durch Einrollen verbunden werden;

Fig. 4

einen Vier-Kopf-Isoliersteg nach einer ersten Ausführungsform;

Fig. 5

eine erste Modifikation der ersten Ausführungsform;

Fig. 6

einen Zwei-Kopf-Isoliersteg nach einer zweiten Ausführungsform;

Fig. 7

eine erste Modifikation der zweiten Ausführungsform;

Fig. 8

eine zweite Modifikation der zweiten Ausführungsform;

Fig. 9

eine dritte Modifikation der zweiten Ausführungsform; und

Fig. 10

eine vierte Modifikation der zweiten Ausführungsform.

Further features and expediencies will become apparent from the description of embodiments with reference to FIGS. From the figures show:

Fig. 1

a cross-sectional view of a composite profile with conventional Hohlkammerisolierstegen;

Fig. 2

a cross-sectional view of a Hohlkammerisolierstegs Fig. 1 ;

Fig. 3

a cross-sectional view of a detail of a composite profile with two profile parts and a conventional insulating bar, which are connected by rolling;

Fig. 4

a four-head insulating bridge according to a first embodiment;

Fig. 5

a first modification of the first embodiment;

Fig. 6

a two-head insulating bridge according to a second embodiment;

Fig. 7

a first modification of the second embodiment;

Fig. 8

a second modification of the second embodiment;

Fig. 9

a third modification of the second embodiment; and

Fig. 10

a fourth modification of the second embodiment.

It will be initially with reference to the Fig. 1 to 3 described the features of composite profiles and hollow chamber profiles, which are known in the art and present in the embodiments described herein.

In Fig. 1 is a cross-sectional view of a composite profile shown extending in a longitudinal direction Z. The composite profile has two profile parts 31, 32, which are separated by a predetermined distance in a transverse direction X, which is perpendicular to the longitudinal direction Z. The profile parts 31, 32 are usually formed as metal profiles and preferably as aluminum profiles. The profile parts 31, 32 are sheared by Isolierstege 10 'in the longitudinal direction Z and held in the transverse direction X at a distance and in a vertical direction Y perpendicular to the longitudinal direction Z and the transverse direction X relative to each other in position. At the in Fig. 1 shown composite profile 1 is limited by the use of two insulating bars 10 'and the profile parts 31, 32 a cavity 1h. In other composite profiles, not shown, only one insulating web 10 'may be provided for connecting the profile parts 31, 32.

In Fig. 2 is the in Fig. 1 shown conventional insulating bar 10 'shown enlarged. The insulating bar 10 'extends in the longitudinal direction Z and in the transverse direction X over a predetermined width B and in the vertical direction Y over a predetermined height H. The insulating bar 10' has at its transverse outer X opposite outer edges (longitudinal edges) 21, 22 each have a curl body ( often also called rolling head) 25 on. The insulating web 25 shown is therefore a 2-head insulating web. Such a curl body 25 is formed as a bar complementary to the groove 31g, 32g, which extends in the longitudinal direction Z and has a predetermined cross-section perpendicular to the longitudinal direction Z. At the in Fig. 2 In the embodiment shown, a recess 25k for an adhesive cord is provided on the respective outer sides. Such an adhesive cord recess 25k is optional and may be omitted.

The insulating web 10 'has the width B in the width direction X, wherein the curl body 25 each have a dimension b2 in the width direction X. This measure b2 is explained with reference to Fig. 3 will be explained in more detail. The insulating bar 10 'has a height H in the vertical direction Y, wherein the Hohlkammem 10h have a height (inner height) h in the vertical direction Y. For Isolierstege 10 'of the type shown, the height h of small hollow chambers is 10 mm or less.

In Fig. 3 the design of the grooves 31 g, 32 g and the curl body 25 and the Anpressleisten 33 and stop strips 34 shown in more detail. To simplify the explanation, a conventional insulating bar 10 "is shown, and the description of the configuration of the grooves 31g, 32g and the rolling body 25 and the curling is the same as that of FIGS Fig. 1 and 2 , The groove 31g, 32g, has a dimension (groove depth) b1 in the width direction X, which is determined by the height of the lower in the transverse direction X of the two strips 33, 34. The lower of the strips 33, 34 is usually the stop bar (often called anvil or shoulder) 34. The pressure bar (often called a hammer or roll-in hammer) 33 is from the in Fig. 3 shown in solid lines (with dimension b1 ') by plastic deformation in the in Fig. 3 Deformed with 33e and shown in dashed line position. The pressure bar 33 is designed so that the most projecting projection of the hammer 33 in the position 33 e is approximately as far in the transverse direction X from the bottom of the groove 31 g, 32g spaced, as corresponds to the dimension b1.

The grooves 31g, 32g facing flanks of the Anpressleiste 33 and the stop bar 34 are usually inclined so that the groove narrows in the transverse direction X away from its bottom.

The curl body 25 has in cross section X-Y perpendicular to the longitudinal direction Z a correspondingly adapted cross-section (in this case trapezoidal shape), so that a kind of dovetail connection is formed. Before deforming the Anpressleiste 33 sufficient clearance for insertion of the curl body 25 in the longitudinal direction Z is present in the groove. After deforming the Anpressleiste 33 in the designated 33e position of the curl body 25 is pressed between the Anpressleiste 33 and the stop bar 34 and held so shear resistant. This process and this design of the grooves and the rolling body is basically known. The Technoform standard groove is e.g. in the aforementioned catalog "Standard Profiles 2010" on page 22 with dimensioning. The dimension b1 is there, e.g. 2.5 mm. In other, not shown here, designs of the groove 31g, 32g, the dimension b1 is correspondingly functionally determined so that the relevant for the shear-resistant clamping of the curl body measure is determined.

The curling body 25 with the complementary dovetail shape usually has a dimension b2 in the transverse direction X which is approximately equal to the dimension b1, preferably slightly larger than the dimension b1. Depending on the shape of the groove and other events, the dimension b2 of the curl body 25 may also be larger or smaller than the dimension b1. Again, in each case, the measure b2 is functionally determined by the fact that it depends on the interaction of the groove and the curl body for shear-resistant holding the insulating web in the groove. For a dimension b1 of 2.5 mm, the dimension b2 of the curl body 25 will usually be 2.5 mm or slightly more, for example 2.6, 2.7, 2.8, 2.9 or 3.0 mm ,

Again on the Fig. 1 and 2 Referring to the conventional Hohlkammerisoliersteg 10 'shown there, close to the curl body 25 each wall sections 10-4, which limit the hollow chambers 10h in the direction of the curl body 25. In height direction Y, the hollow chambers are each bounded by wall sections 10-2 and 10-3, which adjoin the wall sections 10-4. At the in Fig. 1, 2 illustrated embodiment with two hollow chambers, a partition wall 10-1 is provided between the two hollow chambers 10h.

A 4-head insulating bar is an insulating bar, each with two Einrollkörpern (curl heads) 25 on its opposite outer walls. The curled state of such a 4-head insulating web, the exemplary in Fig. 1 of the EP 0 978 619 A2 is shown in the Fig. 2 of the DE 10 2009 037 851 A1 to see.

The above with reference to the Fig. 1 to 3 described features of the composite profiles and insulating bars also apply to the embodiments of the invention described below, with the exception of the described differences of the embodiments. The same reference numerals denote the same elements / features and the description is not repeated for the sake of simplicity.

Fig. 4 shows a first embodiment of an insulating web 20. The insulating web 20 has a first Isolierstegteil 23 and a second Isolierstegteil 24, which are connected via a hinge 28 which is formed in the present case as a film hinge. The first insulating web portion 23 has at its opposite outer edges 21b and 22b each have a curl body (curl head) 25. The second Isolierstegteil 24 has at its opposite outer edges 21a, 22a also each have a curl body (curl head) 25, so that the insulating web 20 a total of four curl body (curling heads) 25 has. The insulating bar 20 is therefore also referred to as a 4-head insulating bar. The walls of the first and second Isolierstegteile 23, 24, which connect the outer edges located curl body 25 are formed thin-walled. Thin-walled in this application means wall thicknesses in the range of 0.3 to 1.5 mm, preferably 0.5 to 1 mm, for example 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm. On the side opposite the hinge 28 in the width direction X, a hook fastener 27 is formed by a projection 27v provided on the first insulating piece part 23 and a hook projection 27h provided on the second insulating piece part 24. The hook closure 27 may also be formed by other hooks or by other suitable clip connections, so that it is generally possible to speak of a closure 27. As from the comparison of Fig. 4a ) and b) is clearly visible, enclose in a cross section XY perpendicular to the longitudinal direction Z substantially trough-shaped or U-shaped first and second Isolierstegteile 23 a hollow chamber 20h, which is completely closed in cross-section XY in the clipped / hooked state of the shutter 27 is.

In the in Fig. 4a ), unclosed state of the closure 27, a foam can be introduced into the hollow chamber 20h along the arrows K before closing the insulating web 20. Preferably, this is a material which is introduced in liquid form into the hollow chamber 20h substantially in the direction of the arrow F, such as a 2K-PUR foam, which then foams in the hollow chamber and this fills as foam filling S (see Fig. 4b ). On the inside of the first and second Isolierstegteile 23, 24, which face the cavity, projections 29 are formed, which form a positive connection with the foam. Preferably, these projections 29 are spherical, as in Fig. 4 , or formed as a barb or the like to form an engagement with the foam.

When filling the cavity 20h with such a foam, this serves as a support foam and therefore allows the thin-walled portions 26 thinner than without the support foam S form. The exact dimensions are to be measured depending on the mechanical requirements and the density of the support foam and the material of the insulating bar.

As a material for the insulating web are plastics such as polyamide, in particular Polyamid6.6, preferably with a Glasfaserbeimischung in the range of 10 to 40%, preferably 20 to 30%, e.g. PA66G25, or PVC, preferably with glass fiber admixture, or ABS, or polypropylene (PP), preferably with an addition of mineral powder, or PPO-PA, preferably with 5 to 20% glass fiber (PPO = polyphenylene oxide) or PBT or bio-based PAs such as PA4. 10, PA6.10, PA10.10 or blends thereof and other suitable for the production of insulating bars by extrusion suitable plastics.

The width B of the insulating bars is in the range of 23 to 300 mm, preferably 30 to 150 mm, more preferably 40 to 100 mm. The height H of the Isolierstege is in the range of 10 to 200 mm, in particular 15 to 100 mm.

The wall thicknesses of the thin-walled regions 26 are in the above-mentioned range.

As the material for the foam are organic heat-insulating materials made of rigid foam, rigid foams made of polystyrene, phenolic resin, PVC, PUR, more preferably 2K-PUR (2K = 2 components), which is introduced in liquid form into the cavity 20h and a stable, to Supporting the insulating bar suitable foam reacts, other 2K foam systems, which in the course of the reaction, an adhesion to the material develop the insulating web, the introduction of rigid foam strips that are glued, and the like suitable. The thermal conductivity λ of the heat-insulating foam material is in the range of 0.020 to 0.060 W / (mK), such as 0.025, 0.030, 0.035, 0.040, 0.045, 0.050, 0.055 W / (mK).

The reaction time can be adapted to the manufacturing requirements, in particular in the 2K foam systems. The foams are to be chosen so that the best possible adhesion to the material of the insulating web is given and preferably a suitability for powder coating of the composite profiles provided with such insulating webs is given, i. an at least short-term heat resistance up to approx. 200 ° C. The foams are adapted to the fire behavior and have a good capacity to fill the cavity 20h.

The foam contacting surfaces of the insulating bar may be required to prepare for better adhesion with the foam or adhesive. This can be done by blasting or knurling or applying a primer or the like.

In the case of using adhesives to make the bond between the material of the insulating bar and the foam, especially when using foam strip inserts, 1K or 2K adhesives of epoxy or PUR or acrylic or silicone or the like may be used with 2K PUR Systems, preferably with a short-term temperature resistance of at least 180 to 200 ° C, are preferred. Alternatively, a double-sided tape can be used. Such a double-sided adhesive tape is preferably made of acrylic foam and in turn preferably has an at least short-term temperature resistance of about 180 to 200 ° C.

The protrusions 29 are preferably arranged on the inner sides of the first and second Isolierstegteile 23 and 24 so that they extend substantially in the vertical direction Y, so as to optimize the heat conduction.

The insulating web 20 may also be designed as a 2-head insulating web.

All features mentioned herein are equally applicable to the modifications and embodiments described below unless expressly stated otherwise.

In the Fig. 5 The first modification of the first embodiment shown differs from this by the provision of openings O in the first insulating strip portion 23. These openings, which pass through the corresponding wall, in the case of the use of foam have the particular task, a pressure relief of the cavity 20h limiting Effect walls. The possibly excess foam S + can escape through the openings, so that there is no undesirable deformation of the insulating web 20.

In Fig. 6 is a second embodiment; the insulating web 20 shown. This is a 2-head insulating web, in the width direction X opposite outer edges only one curl body (curl head) 25 is provided. In the embodiment shown, on one side is a split curl body 25 consisting of two parts 25a and 25b which are connectable via a closure 27 which is formed as a clip or catch connection 27 with a recess 27a and a projection 27v. This connection of the two parts 25a and 25b of the curl body simultaneously causes the closing of the cavity 20L. It is understood that also in the Fig. 4 and 5 shown embodiments may each have only one curl body 25 on the opposite sides in the width direction X. This can also be executed split, as it is in Fig. 6 is shown. Of course it is also possible to use a hook or clip fastener 27, as in Fig. 5 and an undivided curl body 25 in the embodiment Fig. 6 to use. The remaining elements and features of Fig. 6 correspond to those of the Fig. 4 and 5 described characteristics, so that their description is not repeated.

In Fig. 7 is a first modification of the second embodiment Fig. 6 shown. This in turn differs by the provision of passing through the wall of the first Isolierstegteils 23 openings. These have in turn, when using foam support, the task of escaping excess support foam S +. Incidentally, are also at in Fig. 7 the modification already described features available and the modifications already described possible.

In Fig. 8 a second modification of the second embodiment is shown, which differs from the previous embodiments essentially by the provision of a joint formed as a roller joint 28k. The first insulating web portion 23 and the second insulating web portion 24 are thus not integrally connected via a film hinge, but formed as separate parts, which are then connected via a positive roller joint 28k or are. The peculiarity of this modification is therefore that the insulating web has a two-parter, which are connected at a lateral in the width direction X side over the roller joint 28k and on the other side via a hook / clip connection 27. Of course, as with all other embodiments, it is also possible to provide other curling elements (curling heads) 25, to provide other clip connections or to provide a 4-head solution.

Fig. 9 shows a third modification of the second embodiment, which is shown as a modification of the first modification. This differs essentially in that a support projection 29s is provided with a holding head 29c on the inner wall of the first Isolierstegteils 23 such that the holding head 29c with its recess a provided on the opposite side projection 29a a form fit grabs and holds. As in Fig. 9b As can be seen, a wall which passes through the cavity 20h and connects the thin-walled portions 26 of the first and second insulating web portions 23 and 24 is thereby formed. This wall 29w, which is produced by a clip connection of the holding head 29c with the projection 29a, has the particular advantage that at high temperatures, as occur for example in the powder coating, the thin-walled portions 26 are additionally supported and deformation better avoided can.

Of course, here again all conceivable curl body 25 in shape and number are possible. All other features and modifications of the embodiments described above are applicable.

Fig. 10 shows a fourth modification of the second embodiment, based on the second modification Fig. 8 based. Here, the embodiment with the roller joint 28k is provided with the projection 29s and the holding head 29c. The functionality corresponds to that in Fig. 9b ) shown.

The technique shown in the embodiments is also applicable to other insulating bars which are not shown. Here, for example, for a push-soft insulating web, which is designed as a conductor bar or the like, a lid using the in the FIGS. 8 and 10 shown roller joint 28k are positively connected to the insulating web, which is fastened on the laterally other side of the insulating web via a clip or hook connection. This can be like in Fig. 6 to 10 shown to be securable by curling. Also and especially in this context, the roller joint 28k has an advantage because a large opening angle K or a complete separation of the two web parts, so for example of conductor bar and lid, for punching out openings in the conductor bar can be produced. In addition, the openings of the conductor bar can serve as discharge openings O when the corresponding cavity 20h is to be filled with foam.

It is expressly stated that all features disclosed in the specification and / or claims are intended to be separate and independent of each other for the purpose of original disclosure and also for the purpose of limiting the claimed invention, regardless of the composition of the features in FIG the embodiments and / or claims to be disclosed. It is expressly stated that all ranges of values or indications of groups of entities disclose every possible intermediate value and every intermediate entity for the purpose of original disclosure and also for the purpose of limiting the claimed invention.

Claims (9)

1. Insulating strip (20) for a composite profile for window, door or façade elements, which extends in a longitudinal direction (Z) and is configured for a connection with at least one profile member (31, 32) of the composite profile (1) extending in the longitudinal direction (Z) and comprising at least one roll-in groove (31g, 32g), comprising
   a first insulating strip member (23) and a second insulating strip member (24) connected laterally in a width direction (X), which is perpendicular to the longitudinal direction (Z), via a hinge (28, 28k) and being connectable laterally on the other side in the width direction (X) by a clip or hook closure (27) such that, in a closed state of the clip or hook closure (27), a hollow chamber (20h) is formed, which is enclosed in the cross-section (X-Y) perpendicular to the longitudinal direction (Z), and
   at least one roll-in body (25) on outer edges (21, 22) opposing laterally in width direction (X) for a rolling-in into the at least one groove (31g, 32g) of the at least one profile member (31, 32),
   wherein the hinge is formed as roller hinge (28k).
2. Insulating strip according to claim 1, wherein at least one of the roll-in bodies (25) is formed as a divided roll-in body (25, 25a, 25b), whose parts (25a, 25b) are fixedly connected and secured by the rolling-in of the roll-in body (25).
3. Insulating strip (20) for a composite profile for window, door or façade elements, which extends in a longitudinal direction (Z) and is configured for a connection with at least one profile member (31, 32) of the composite profile (1) extending in the longitudinal direction (Z) and comprising at least one roll-in groove (31g, 32g), comprising
   a first insulating strip member (23) and a second insulating strip member (24) connected laterally in a width direction (X), which is perpendicular to the longitudinal direction (Z), via a hinge (28, 28k) and being connectable laterally on the other side in the width direction (X) by a clip or hook closure (27) such that, in a closed state of the clip or hook closure (27), a hollow chamber (20h) is formed, which is enclosed in the cross-section (X-Y) perpendicular to the longitudinal direction (Z), and
   at least one roll-in body (25) on outer edges (21, 22) opposing laterally in width direction (X) for a rolling-in into the at least one groove (31g, 32g) of the at least one profile member (31, 32),
   wherein the hinge is formed as film hinge (28), and
   wherein at least one of the roll-in bodies (25) is formed as a divided roll-in body (25, 25a, 25b), whose parts (25a, 25b) are fixedly connected and secured by the rolling-in of the roll-in body (25).
4. Insulating strip according to one of claims 1 to 3, wherein the walls of the first and second insulating strip members, which extend in transverse direction (X), are formed thin-walled at least in sections.
5. Insulating strip according to one of claims 1 to 4, wherein form-fit protrusions (29) are provided on the inner sides of the first and second insulating strip members (23, 24) facing the hollow chamber (20h), which extend in height direction (Y).
6. Insulating strip according to one of claims 1 to 5, wherein the hollow chamber (20h) is at least partly filled with foam (S).
7. Insulating strip according to claim 6, wherein openings (O) penetrating the wall of the first or second insulating strip member (23, 24) are provided in the first or second insulating strip member (23, 24), which enable the escape of redundant foam for pressure release.
8. Method for manufacturing an insulating strip according to one of claims 1 to 7, wherein the hollow chamber (20h) is filled at least partly with foam by introducing a fluid foamable substance into the hollow chamber (20h) with open clip or hook closure (27) through the same and producing the foam after closing the same by foaming the fluid substance.
9. Composite profile for window, door, or façade elements, which extends in a longitudinal direction (Z), comprising
   at least one profile member (31, 32) and at least one insulating strip (20) according to one of claims 1 to 7, which is connected to the profile member by rolling-in.

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