DE3342700A1 - METHOD FOR PRODUCING A HEAT-INSULATING PROFILE BODY - Google Patents

Description

3342760

Process for the production of a heat-insulating profile body

The invention relates to a method for producing a heat-insulating profile body, in particular for use for window or door frames, where metal profile rails are preferably provided with undercut grooves arranged at a distance from one another and by means of a heat-insulating material Bridge are connected to each other, which engages in the preferably undercut grooves, at least a part of the heat-insulating material for the purpose of form-fitting adaptation to the profile rails or Formation of an adhesive connection with the profile rails can be activated by supplying heat.

A heat-insulating profile body and a method for its production are known (DE-C-20 27 and DE-C-21 31 721 of the applicant) in which the bridge consisting of heat-insulating material of profiled insulating strips is formed with the folded edges located at their end regions be inserted into the undercut grooves. The insulating strips form with the metal profile rails a cavity that is filled with a heat insulating filler. To also push long profile bodies together To be able to, the folded edges should have as much play as possible in the undercut grooves. On the other hand, however, this still requires stabilization of the elements pushed together. The stabilization is done by introducing an expanding

33427G0 filling compound into the cavity. It has already been proposed to use a preliminary product for the filling compound, which can be activated by the supply of heat, i.e. caused to increase in volume (claim 3 of DE-C-21 31 721).

Also known is a profile body of the type described above, the cavity of which does not have an expanding Filling compound is filled. Instead, the stabilization should be achieved by gluing the folded edges of the Insulating strips take place in the preferably undercut grooves of the metal profile rails. To that end is A thixotropic adhesive layer is applied to the folded edges. This layer is under normal conditions not adhesive. It only becomes deformable under pressure or heat, penetrates into the remaining groove spaces and sticks the folded edges with the groove walls. It has accordingly already been proposed for this purpose as well been to activate the adhesive layer by supplying heat (claim 5 of DE-A-30 02 693 des Applicant) .. '"." ·

It is also well known to use aluminum as the material for the metal profile rails. the Aluminum profile rails are extruded from aluminum or an aluminum alloy in pressing plants. Then the profiles are straightened. They will then have their final shape, but not yet the final strength. For this reason, they are put into a hardening oven and cured while warm. The curing takes about 4 to 8 hours at a temperature of 18o to 22o ° (the higher the temperature, the shorter the curing time). During this time, the profiles are stacked on a trolley without any movement or deformation etc. At the end of the curing time, the carriage with the stack of profiles is moved out of the oven. The profiles cool and are then ready for use. It takes place

BATH ORIGINAL

33427G0

Then the surface treatment by anodizing, repainting and powder coating as well as further processing.

The invention is based on the object of reducing the time and effort required to produce heat-insulating Reduce profile bodies of the type described and a satisfactory for the respective purpose To create a connection or anchoring between the metal profile rails and the bridge.

The object is achieved according to the invention in that - as known per se - aluminum profile rails as metal profile rails are used and that the heat insulating material before the hardening of the aluminum profile rails or before they are heated due to another manufacturing measure, e.g. surface coating or finishing, or before a separate heat treatment between the Aluminum profile rails introduced and those required or required for hardening or the .other · .production measure separate heat treatment for -the-'activation "used will.

The basic idea of the invention consists in the any anyway occurring hardening operation or another anyway occurring heat treatment for production to use the profile body with. In contrast to the previously known method, the composite material should now be used already in the pressed, but not yet hardened or the further heat treatment not yet submerged aluminum profile rails are introduced. Then the heat storage takes place in the hardening furnace or in a heating furnace, of course it is also possible to give the profile body a special heat treatment to warm up. Due to the effect of heat and the other

subsequent cooling, the composite material gains its final shape or final strength or final Connection with the aluminum profile.

The invention makes it possible in particular to use activatable heat-insulating material that is very slow reacted. It also enables such materials

2Q should be used, which only occur at relatively high temperatures, i.e. those that occur in the hardening furnace can be activated. The use of such materials has on the other hand especially when these materials are used in conjunction with insulating bars

jg advantage that the prepared insulating bars at room temperature storable and apart from the aluminum pro! production can be prepared. So far the hardened aluminum profile rails had to be one Foam and / or pouring station are transported,

2Q in which the liquid foam precursor is applied to the aluminum

^{; profile rails or:} · the insulating strips were applied during assembly, i.e. when they were pushed together. Now it is possible to prepare the insulating strips separately and then to take them to the location of the profile rail production

2g, which is a Simplification means. At the place of use (aluminum press), the prepared insulating strips are put into the aluminum profile rails pushed in and the connection made after the heat treatment.

QQ The insulating strips can either be pushed in from Be done by hand or by very simple machinery,

so that there is no need to have an extensive mixing and metering device before To set up profile heating furnace. This would happen in many Cases encounter problems of space on the one hand, and organizational problems on the other hand, because a mixed and Dosing system (chemistry) does not fit well with the technology of the extrusion plant (metal).

An expedient development of the invention

The method can consist in that for the activatable part of the heat insulating material such as is used by the. Heat activation 2g also hardens permanently and with further exposure to heat remains dimensionally stable after activation.

This further development process step is therefore in combination with the above-described process according to the invention value and particularly useful because.,

'.-. the fresh ^ epressteniiAiumijaiuiaprefilschdeneaiLmit ^ dem.iaii ju, U Hardening are exposed to a temperature treatment for the first time. It is desirable that the activatable part of the heat-insulating material in the event of other heat effects, such as powder coating remains dimensionally stable. This is also because the aluminum profile rails are then already hardened and accordingly no longer - as with hardening - have to be supported over their entire length in order to avoid permanent deformations

to avoid on by sagging. When powder coating the aluminum profile rails are only partially supported and thus sag. That would have sagging for aluminum profile rails without introduced, activatable heat-insulating material, there is no permanent one

gg deformation results in ·; however, if you use the activatable Thermally insulating composite material are provided, so this can be softened and then re-hardened but lead to permanent deformation. It is therefore particularly advantageous that the activatable

heat-insulating material already before the hardening Aluminumprofi! Seemed to be connected to these and it is desirable that the material remains dimensionally stable after heat activation in the hardening furnace.

It is further proposed, for the activated portion of the heat insulating material, a mixture of epoxy resin with a reactive above 4o ° C curing agent and a high-boiling blowing agent such as Freon 113 having the formula CFCl ₂ -CF ₂ Cl, the first at about 47 ⁰ C boils, or azodicarbonamide or sulfohydrazide to use. "Frigen 113" is a trademark of the Hoechst company.

A mixture of a granular expandable polystyrene (for example a precursor for the foam from BASF with the trade name "Styropor") and an epoxy resin that is paste-like at normal temperature, that is storable ^{and that hardens at 120-16O 0} C and is thus heat-resistant up to 180 ° C, is also suitable remains (for example epoxy resin type iiVK - 1-28O - or LVK 1280 RII from Bostik GmbH). When this mixture is exposed to the curing temperature for the aluminum profile rails, the polystyrene expands, forms cavities, displaces the epoxy resin, drives it into the joints and sticks there.

Alternatively, it is proposed that for the activatable part of the heat-insulating material a hot-flowing Hot-melt adhesive forming polyamides can be used.

/ ie

It is also proposed that slowly for the activatable part of the heat insulating material reactive polyurethane resins or epoxy resins or polyester resins as one-component systems be used.

Hot-melt adhesives are also suitable as part of the heat-insulating material that can be activated, those sold by 3M under the trademarks "Jet melt 3746" and "Jet melt 3779" will.

A hot melt adhesive from Bostik GmbH, sold under the trademark "Thermogrip 9411" and "Thermogrip 9456" is offered. "Thermogrip 9411" is at normal temperature as giant-shaped granules,

* has a softening point of 151 C and a Melting point of 158 ° C. "Thermogrip 9456" is also a granulate. It has a softening point of 155-16o ° C and a processing temperature from 18o ° -22o ° C. The inventive

* ^{Ό The} method can be used in particular for the production of a profile body known per se

COPY

<r 33Λ2760

/ 9.

(DE-C-21 31 721 of the applicant) use its bridge consists of the undercut grooves engaging behind profiled insulating strips, which with the Metal profile rails enclosing a space filled with an insulating filler compound, the filler compound from a pre-product that can be foamed by supplying heat consists. s

The method can also be used for the production of a profile body known per se (DE-A-3o 16 o76 of the applicant), the bridge of which profiled at least one of the undercut grooves engaging behind Has insulating strip which by pouring in a liquid precursor which can be hardened by the supply of heat is formed in the undercut grooves.

Another application of this ^; The method according to the invention results in the production of a profile body known per se (DE-A-3o o2 693 "by the applicant) whose bridge has at least one profiled insulating strip engaging behind the undercut grooves, which at its end regions engaging in the grooves with an adhesive that can be activated by supply of heat is provided.

Finally, there is also an application of the method according to the invention for the production of a profile body known per se (DE-A-31 02 616 des Applicant), the bridge of which is formed by insulating strips engaging behind the undercut grooves, which preferably consist of a frame that is tensile even when exposed to heat, e.g. by glass fiber reinforcement and with the aluminum profile rails enclose a space filled with an insulating filler compound, the

Space is in communication with the grooves and is also filled with the insulating filling compound and wherein the filling compound consists of a pre-product which can be expanded by the supply of heat and which during foaming the insulating strips are soaked or saturated at least on their side facing the room and in the grooves. includes.

The invention also relates to a profiled insulating strip, which is used for preferentially reaching behind the undercut Grooves on the aluminum profile rails of a produced by the method according to the invention Profile body determined for the purpose of forming at least part of the heat insulating bridge and thereby marked., is that they are located at least in their next to the two aluminum profile rails End areas in the longitudinal direction of the profile for the purpose of forming a receiving space for the activatable part of the heat-insulating Materials as well as for the purpose of achieving a spreading effect caused by an activation Expansion of this material is divided.

The profiled insulating strip according to the invention can have an H-profile shape or X-profile shape and with both sides outwardly directed edge folds be provided at both end regions. The folded edges are used for Engagement in the undercut grooves of the aluminum profile rails. If the bar has a Η-profile, it can be shaped so that its legs point towards the two end regions converge. An insulating strip shaped in this way can on the one hand be more easily inserted into the rear tendon Insert the grooves of the aluminum profile rails; on the other hand, in this way the gap through which the activatable part of the heat insulating material could leak out, very small. The converging legs can also have a "frozen" outward tension that is exerted through a heat treatment ■ Relaxed outward bending of the thighs. It will

the gap widens and the activatable mass can escape.

Another development of the profiled insulating strip with Η-profile without converging tavern can thereby exist that at the ends of all four legs also inwardly directed edge folds are provided, which also lead to a narrowing of the gap and prevent the activatable material from escaping.

The profiled insulating strip according to the invention can also have a double-T shape and between the two of them Be completely divided.

Another variant can consist in that the erfindungsg.emäße profiled insulating strip! -profile shape and divided continuously between both end areas is. The activatable mass located in the space must then be expandable in any case, so that the End areas of the insulating strip are bent apart during activation and the undercuts reach behind the grooves in the aluminum profile rails.

According to another proposal, the two parts of the profiled insulating strip can be completely separated from each other be separated and in the middle between the two end regions in order to form an enlarged receiving space a greater distance for the activatable part of the heat insulating material than at the end regions to have.

Another development consists in that the two parts of the profiled insulating strip are completely separated from each other are separated and that the dividing line between the two end regions and / or in the longitudinal direction of the profile

odd, preferably zigzag or wavy

runs. With a dividing line designed in this way a transverse or longitudinal displacement of the two separate parts is excluded. 5

Preferably the odd dividing line should be between the end regions of the two halves extend so that both halves have the same cross-section. This will simplifies manufacture, storage and use.

The embodiment specified above is suitable also especially to the fact that both halves are completely provided with a solid cover, which in the Heat treatment · melts and / or expands and / or forms a heat-adhesive mass. The two halves can be placed in an immersion bath in which the liquid coating is located, which then hardens.

Another possibility for the design of the profiled insulating strip according to the invention can consist in that the dividing column at the two end areas with a cover plate are covered, which melts when exposed to heat. The cover plate prevents leakage the activatable mass from the receiving space especially when the activatable mass is liquid is.

It is also possible that the part of the activatable heat-insulating that is located in the receiving space Materials next to the end areas with a hot-melt adhesive compound and in the inner middle strip with an expanding one Mass is filled.

As an alternative to this, it is proposed that the part of the activatable heat insulating which is located in the receiving space Materials is a heat treatment expandable and heat-adhesive mass.

The part of the activatable heat-insulating material located in the receiving space can be viscous, paste-like, be powdery or solid. It is still possible that the mass mentioned is liquid, but in is microencapsulated when the beads melt when exposed to heat. The beads then form a pourable Dimensions.

Another further education suggestion can be that the part of the heat-insulating material located in the receiving space is reinforcing and / or absorbent Contains additives such as fiberglass. The glass fibers can be placed in the receiving space as a roving or strand present and impregnated with the activatable part of the heat-insulating material that is present in liquid form be.

Another inventive proposal relates to a profiled insulating strip that is profiled with another Insulating strip for engaging the preferably undercut grooves on the aluminum profile rails according to the invention Process produced profile body for the purpose of forming at least part of the heat-insulating Bridge is intended, the insulating strips and the metal profile rails one with a heat-insulating Include filler to be filled cavity. This insulating strip can also face the cavity Side be covered with a strip of absorbent material such as felt, which is soaked with a foam precursor and its surface through a film. e.g. covered with polyethylene.

The invention also relates to a preliminary product for the production of a profile body using the Method according to the invention, wherein the bridge of the profile body is in the preferably undercut grooves of the metal 1-

Profile rails engaging profiled insulating strips is formed with the metal profile rails Include a space that can be foamed by the heat activation of the pre-product to be introduced into this space is. This intermediate product should be characterized in that it consists of a foamable liquid soaked fibrous strand, preferably one made of felt, is formed by one at the Heat activation is sheathed in a slightly melting film, for example one made of polyethylene.

Another preliminary product of the type described above can be characterized in that it consists of a to be included in the cavity and extending in the longitudinal direction of the profile body hollow beam consists, which is covered with a fibrous layer, in particular one made of felt, which in turn with a foamable liquid and soaked in an easily melting film, for example such is covered from polyethylene, and that the content of foamable liquid in the fibrous layer is so is dimensioned that the foam level according to the heat; activation does not reach the full height of the space above the hollow beam. This ensures that An air-filled cavity remains on both sides of the foam layer, creating a three-layer insulation zone Air / foam / air is created, which ensures particularly good thermal insulation.

Further features of the invention are based on several exemplary embodiments shown in the drawing described.

Show it:

Figure 1 shows a section through a first embodiment of a heat-insulating profile body with foamed Cavity;

Figures 2 to 5 further sections through the first embodiment of the heat-insulating profile body with pre-products introduced into the hollow space for foaming the hollow space;

Figures 6 to 15 different embodiments of insulating strips in connection with a heat-activatable mass;
15th

FIG. 16 shows a section through a second embodiment of a heat-insulating profile body;

FIG. 17 a section through a third embodiment shape for a heat-insulating profile body;

FIG. 18 shows a section through a fourth embodiment for a heat-insulating profile body;

FIG. 19 shows a partial section through a fifth embodiment for a heat-insulating profile body;

Figure 2o is a perspective view of the in Fig.

insulating strip visible in section? 30th

Figures 21 and 22 a further embodiment of a with an expandable mass provided insulating strip in an undercut groove one Aluminum profile rail before and after foaming;

_w IL 33427G0

Figures 23 and 24 show another embodiment of a

insulating strip covered with an expandable mass between two aluminum profile rails, similar to FIG. 2, but here on the outside and with a removable one

Bridge between the aluminum profile rails;

FIG. 25 shows a further embodiment of a profile body; .,

FIG. 26 shows a further embodiment of an insulating strip with a cover strip for the one with filling compound cavity to be filled;

FIG. 27 a coated with an expandable mass

Insulating strip as a further embodiment;

FIG. 28 shows an exemplary embodiment of an expanding mass absorbing attachment strip.

Figure 29 to 31 further embodiments for an insulating strip,

The heat-insulating profile body shown in Figure 1 consists of two spaced apart Aluminum profile rails 1, 2 which are provided with undercut grooves 7 on their mutually facing sides are. Insulating strips provided with bevelled edges engage in the undercut grooves at their end regions 3, which are preferably made of plastic, a. The aluminum profile rails 1,2 and the insulating strips 3 enclose a cavity 5 which is filled with an expanded foam mass 6. The foam mass is also penetrated into the remaining groove spaces. In dashed Lines are also indicated aluminum bridges 8, with which the aluminum profile rails 1, 2 as a preliminary product first '·. are still connected. These bridges are then after the cavity has been filled with foam

removed. The left bridge 8 can be removed, for example, that the protruding humps 1o in the Level 11 can be cut off or milled off. The right aluminum bridge 8, which is also removed by milling must be, has against the insulating strip 3 directed lugs 12, which are intended to prevent the insulating strip 3 bulges out too much during the heat treatment due to the pressure of the foam filling 6. Instead of the lugs 12 can also be provided with a lug on the insulating strip which is directed against the aluminum bridge 8 is. In the course of the milling of the aluminum bridge, the nose 4 can be completely or partially removed.

The crucial idea of the invention is that the pre-assembly of the profile body, as shown in FIG is, takes place before the hardening of the aluminum profile rails 1,2 and also before hardening in the cavity 5 a preliminary product for the foam filling 6 that can be activated by supplying heat is introduced. For activation of the pre-product is then the heat that is already present when the aluminum profile rails are hardened 1.2 exploited.

FIG. 2 shows a first possibility for producing the foam filling in the above sense. The two Insulating strips 3 are covered here with a felt strip 2o which is impregnated with the foam precursor and the surface of which is covered by a film 21, for example made of polyethylene. This cover serves the Improvement of the shelf life. When exposed to heat during the hardening process of the aluminum profile rails The polyethylene melts (around 1oo-12o ° C) and the foam can develop and the cavity 5 fill in between the two aluminum profile rails 1, 2.

FIG. 3 shows a strand 12 of fibers, in particular of felt, impregnated with foam precursor Cross-section here is circular, but of course it can also have a different cross-sectional shape. the The surface of the strand 13 is also covered with a slightly melting film 14. This string-shaped Product can, for example, together with the lower insulating strip 3 in the undercut grooves the aluminum profile rails 1, 2 are inserted.

According to FIG. 4, however, it is also possible to have one or more strands 13 independently of the isolator strips insert into the cavity 5. During the hardening heat for the aluminum profile rails 1.2 melts again the film 14 - or is torn open by the expansion pressure of the strand - whereupon the foam develops can.

In FIG. 5, an inserted bridge is shown which forms a hollow body 15 which encloses a cavity 16 below it. The hollow body is at its top _w ith a felt strip is 2o, which in turn impregnated with the foam precursor and is covered with a foil 21st When exposed to heat, a foam develops, which rises approximately to level 22. An air space remains above the foam level 22, so that a three-layer insulation zone air / foam / air is created, which ensures particularly good thermal insulation. FIG. 5 also shows the metal bridges 8 to be milled off.

The above-described embodiments can both One-piece - with metal bridges to be milled off - or two-piece - made of two individual aluminum profile rails getting produced.

FIG. 6 shows a divided insulating strip 23, the two halves of which are connected to one another by a central web are connected. As a result, the insulating strip 23 has an H-shape. The ends of the legs have bevels facing outwards 28 provided, which engage behind the undercuts of the groove 7 on the aluminum profiles 1,2. The space between the two halves is next to the central web with an expandable mass 24 and next the end area, en with a hot-melt adhesive

IQ mass 25 filled. The latter becomes liquid or flowable due to the heat occurring during the hardening of the aluminum profile rails 1,2, while at the same time the expandable mass 24 increases its volume and thus presses the adhesive into the joints of the undercut grooves 7, where a pressure bond between the insulating strip 23 and the aluminum profile rails takes place.

Expandable and adhesive compounds can optionally also be one ^and the same, for example an epoxy resin that foams when heated and then hardens.

The central web can be omitted in the profiled insulating strip 23. In this case, the expandable represents and / or adhesive mass simultaneously establishes the connection between the two halves, both before the heat treatment (for inserting the insulating strip into the undercut grooves) as well as after the heat treatment (to stabilize the shape of the entire profile body).

In order to be able to insert the insulating strip 23 into the undercut grooves 7, the dimension between the hook-shaped Groove webs must be larger than the relevant dimension of the insulating strip. In other words, it must be sufficient There must be tolerance for insertion.

If the two aluminum profile rails 1, 2 are not connected by an aluminum bridge 8 to be milled later, this tolerance can remain. As soon as the expanding mass has expanded, the aluminum profile rails pressed apart and posted to the undercuts, so that a seal against running out of the expandable mass is given.

If, however, the two aluminum profile rails 1,2 are connected by an aluminum bridge, so the entire aluminum profile is in one piece, must be inserted also at the undercuts of the groove a sufficient one There must be tolerance. This would cause the mass to expand during heat treatment step out. To prevent this, the hook-shaped must be used for sealing on the mutually facing edge areas Grooved webs are taken care of. The following options are available for this:

Either the two parts of the insulating strip are not provided with a central bar or with an X-shape (which is equivalent to the Η-form). The expanding mass will then push the two parts apart and bring them to a stop at the opposing ends of the hook-shaped groove webs, whereby a seal is provided; or the four legs of the one-piece insulating strip are in their strength or elasticity so matched to the expansion force of the expanding mass that the pressure of the thighs bends apart and stops at the aforementioned mutually directed end regions of the hook-shaped Brings grooves; or the legs of the insulating strip are bent towards each other for insertion and only open under heat treatment, as a result of which the sealing stop is produced at the points mentioned will. ■ ·

The last-mentioned possibility is shown in FIG. 7. To bend the legs of the insulating strip towards one another, see above that they converge towards the end regions, there is the possibility of the insulating strip 33 directly after the extrusion process, e.g. before final cooling, to be shaped accordingly. she This gives rise to so-called frozen tensions, which are released during heat treatment, which causes the insulating strip reverts to its original H- * shape, i.e.

the thighs move apart. Another • option is to glue the thighs with a hot glue to glue. In the cold state it holds the legs together / so that the insulating strip easily falls into the undercut grooves can be introduced.

The hot melt adhesive melts under heat treatment, the legs can open and against each other Hit the directed ends of the hook-shaped grooved webs. At the same time, the hot melt adhesive is in pressed the grooves and glued there, after it has solidified again, the insulating strip 33 with the aluminum profile oil rails 1,2. It is also possible to use the insulating strip 33 at the points that connect with the aluminum profile rails 1.2 come into contact, to be covered in a manner known per se with a hot melt adhesive, which through The effect of heat is activated and thus creates a pressure bond at the relevant points.

Under certain circumstances, a combination of this hot-melt adhesive coating with the frozen tension is sufficient, to make a useful connection between the insulating strip 33 and "the aluminum profile rails 1,2, so without using an expanding filling compound.

However, it is an expanding and / or adhesive filling compound If used, it is particularly advantageous to use this not as a liquid, but as a paste, powder, solid Fabric or to use in microencapsulated form, so that the space between the two halves of the

-μ 31 33427Ü0 insulating strip can be filled in advance and the insulating strip has a certain shelf life in this state. The one with expanding / sticky mass. Filled insulating strips can then be produced centrally in a suitable plant and brought to the place of use (aluminum press) as a ready-to-use, storable product. There they are pushed into the aluminum profile rails if necessary and the connection is made through the subsequent heat treatment as part of the hardening process. The insulating strips can be pushed in either by hand or by a very simple machine.

As already mentioned, the converging legs in the insulating strip 33 according to FIG. 7 ensure that the Filling compound 26 is largely prevented from escaping. Such insulating strips 33 can therefore be stored easily. Another possibility, according to FIG. 8, is that in the case of the H-shaped insulating strip 73 at all four leg ends next to the outwardly directed. bevels 28 still further inwardly directed edge bevels 31 provides, which only a narrow one Form a gap which prevents the preferably pasty filling compound 26 from escaping.

. .

There is yet another possibility according to FIG. 9, which shows an insulating strip 43 with completely separated halves, in that the gaps at the end regions be closed by a cover 27. The lid is made of a material that resists heat detaches or melts and thus clears the path for the filling compound 26 to the outside.

FIG. 10 shows an insulating strip 53, the halves of which are completely separated from one another and have bulges in the central area for the purpose of forming an enlarged receiving space 29 for the filling compound. Next to the " ⁵ end areas, the two halves lie completely or almost completely against one another. They can be glued there and then form a compact unit. After being pushed into the grooves 7, the filling compound 26 expands under the action of heat. ^ The bond between the two halves loosens." so that the filling compound can emerge through the two gaps and penetrate into the grooves 7. '

Alternatively, according to FIG. 11, an insulating strip 63 can be used, one half of which is like one half the insulating strip 53 is formed in FIG. 1o, and the other half of which is closed by a flat lid 3o is. Otherwise the effect is the same as with the insulating strip 53 in Figure'1ο: ·

If the expandable / adhesive mass is not available as a solid or paste, but only as a liquid stands, this can be made thixotropic by adding suitable agents, so that a paste is created, which only flows under pressure or heat. Another option is to add aggregates to the liquid, such as to mix glass fibers, which also increase the toughness and at the same time the Improve the strength of the curable foam mass.

Finally, there is also the possibility of a filling or a strand in the cavity 5 of the profile body made of glass fibers, other fibers or any other absorbent material that is compatible with the

The liquid is or is soaked in such a way that the liquid is retained in the cavity 5 in a somewhat leak-proof manner until expansion begins later under the influence of heat.

Figure 12 shows an insulating strip with a double-T profile, which consists of two completely separate halves. The dividing line 32 is designed in a zigzag shape, This creates interlocking teeth that prevent possible transverse displacement. The two halves the insulating strip 83 in Figure 12 have the same cross-sectional profile; they are only rotated by 18o and set against each other. The two halves are covered with an expandable, adhesive mass Mistake. This can be applied in an immersion bath. To install the halves with the after Dip in the meantime dried cover put together in pairs and then pushed in, whereupon the Heat treatment is used as part of the hardening process of the aluminum profile rails.

Figure 13 shows an insulating strip 93, which is also Has a double T profile and consists of two completely separate ones Halves. Here the dividing line 35 is designed in a zigzag shape in the longitudinal direction of the profile, whereby a longitudinal displacement of the two halves can be excluded. The space between the two halves is filled with an expandable / adhesive filling compound 26.

Figure 14 shows an insulating strip 113, which in principle how the insulating strip 53 is designed in FIG. 1o. Here, however, the idea of the zigzag-shaped dividing line 32 from FIG. 12 has been adopted.

33427

FIG. 15 shows an enlarged illustration of an undercut groove 7 for an insulating strip 113, which has a strip-shaped cross-section and consists of two completely separated halves. the so both halves are made of two smooth strips, between which there is in turn an expandable filling compound 26. When expanding, the two beat strip-shaped halves on the mutually facing ends of the two hook-shaped groove webs, while the remaining groove space is filled by the expanding foam ', which there is a pressure bond brings about. To improve the bond, the inner walls of the undercut groove 7 are provided with teeth

36 provided.
15th

Figure 16 shows a second embodiment for one heat-insulating profile body, the manufacturing process of which is described in DE-A-30 16 076 of the applicant is. The special thing about this process is that the insulating strips 123 and also the preliminary product for the expanding filling compound 6 are poured by means of pouring heads. Pouring took place after the hardening Aluminum professional! It is obvious, that one was bound to very fast-curing synthetic resins for reasons of economic production. The inventive Process now opens up the possibility of slowly reacting polyurethane resins or epoxy resins or to use polyester resins that have sufficient time to harden in the hardening oven and harden them is still promoted by the heat in the curing oven.

The method according to the invention therefore opens up this manufacturing method creates new materials with more favorable properties.

■ * '- ■■■

Figure 17 shows a third embodiment for one heat-insulating profile body, which is described in more detail in DE-GM 81 24 139 of the applicant. That What is special here is that a single insulating strip 133 is present, which consists of a castable expandable Pre-product is manufactured. Profile bodies of this type can also be used using the inventive Process are produced.

Another embodiment for a heat insulating Profile body is shown in Figure 18. This is described in more detail in DE-A-30 02 693 of the applicant. That What is special here is that the cavity 5 is not filled with foam. The folded edges 28 of the used here Insulating strips 143 are provided with an adhesive layer 38 that can be activated by heat treatment. When gliding through of the preassembled profile body through the curing oven, the adhesive layer 38 is activated and provides an adhesive connection between the insulating strips 143 and the wall of the undercut grooves 7 in the aluminum profile rails 1.2.

Another embodiment for a heat-insulating profile body, which is also according to the invention Process can be produced, Figure 19 shows.

This heat-insulating profile body is in DE-A-31 O2 616 described by the applicant. The insulating strip 153 used here is shown in perspective in FIG. 2o shown. The insulating strip 153 consists of a plastic

gO fabric center strip 43 and ribbed crossbars 4o Metal that leave gaps 41 at intervals. The central web is provided with through holes 44. the entire insulating strip 153 is wrapped with heat-resistant glass fiber or carbon fiber bundles, which the insulating

g ₅ bar 153 even under the influence of extreme heat and under

give tensile strength to the effect of the foam pressure.

The gaps 41 allow that of the preliminary product during the heat treatment during the hardening of the Aluminum profile rails 1, 2 in the cavity 5 developing foam 6 also penetrates into the groove space 7 and further through the hole 44 into the space between the central web 43 and an end plate 39.

Figure 21 shows an insulating web 153 in an undercut groove of an aluminum profile rail 2. The The head part or the foot part of the insulating web 153 is provided with a preferably lacquer-shaped plastic layer covered, between the plastic layer 138 and the inner wall of the undercut groove 7 on all sides Play remains for insertion. When exposed to heat, the lacquer layer 183 swells or foams on, fills the tolerances and glues the insulating bar or anchors it in the groove 7. The finished Product is shown in Figure 22, where the foamed paint, here denoted by 6 due to the action of heat or has solidified after cooling.

In order to prevent the presence of gaps 41, Fig. 2o, that the filling compound 6 emerges from the groove 7 over a short distance, without filling the groove 7, it is advantageous to pass the gaps 41 - as shown in Fig. 2o - on the inside, for example a cover plate 46, which is indicated by way of illustration and which is also part of the insulating web 153 or of the transverse web could be to cover. This configuration makes it possible to use viscous or pasty filling compounds 6, which can advantageously be recorded in the gaps 41 before they are activated. In this embodiment the cross-section of the insulating web 153 enclosing the groove 7 is approximately 75% of the clear cross-section of the groove 7. If then 5o% of the volume of the in the groove

BATH ORIGINAL

bordering insulating web 153 is removed through gaps 41 and these gaps 41 are filled with an adhesive, which expands by at least 50% when heated, the increase in volume of the adhesive is sufficient to cover the remaining space the groove 7 to fill.

FIG. 23 shows an insulating web 3 which, similar to that in FIG is occupied. A metal bridge 8 between the aluminum profile rails 1 and 2 is formed like a hump, in order to give space for the introduction of the insulating web 3, which is covered with the plastic compound 2o. When exposed to heat expands the mass 2o, fills the hump cavity and the tolerances of the grooves and solidifies. The latter is shown in FIG. 24, where the foamed mass is designated by 6. The metal bridge 8 is at the parting line 11 cut off or milled off, with part of the foam filling also being removed. This results in There is a clean, flush view of the insulation zone between the two aluminum profile rails 1 and 2.

In FIG. 25, an embodiment is shown which differs from that in Figures 23 and 24 in that that the two aluminum profile rails 1, 2 of which only one is shown, not in one piece with one another are connected. The insulating strip designated here with 163 carries a cover plate 51 on one broad side, which can be clipped on by means of a latching connection 52 and on the other hand is held at a distance from the broad side of the insulating strip 163. The cover plate 51 is dimensioned so wide that their longitudinal edge 54 cooperates with the longitudinal edge 55 of the groove leg 56 in a sealing manner able. A strand is located between the cover plate 51 and the broad side of the insulating strip 163 expandable plastic mass in the form of a to the

³³⁴²⁷⁰ °

Broad side of glued contact strip 57. The insulating strip 163 forms with the cover plate 51 and the contact strip thus a component that can be pushed into the groove 7 before the aluminum profile rails 1, 2 are hardened. When the parts are heated to the hardening temperature, the plastic compound expands, as a result of which the cover plate 51 bends out and is pressed with its outside against the longitudinal edge 55 of the groove leg 56 in a sealing manner. The expanding Plastic flows in the direction of the arrows 58 through gaps 41 in the foot of the insulating strip 163 into the groove 7, taking both these and the distance between the cover plate 51 and the insulating strip fills. It also seems appropriate, at least a hint shown and designated with 59 joint with parallel to the groove 7 directed joint axis in the Provide cover plate 51 to enable their pivoting movement against the groove web 56 for the purpose of sealing. The joint 59 can be formed in a simple manner by weakening the material thickness. The latching connection 52 consists of a bar or head extending from the insulating bar 163, which is made up of kralTen-shaped molded parts the cover plate 51 is overlapped. A bridge 6o, which is indicated by way of illustration, can be present.

In the exemplary embodiments according to FIGS. 26 to 29, there is also a seal on the longitudinal edges 55 of the groove legs 56 due to the expansion force of the expandable plastic compound 26.

In the embodiment according to FIG. 26,.

· - '. - / is used for this purpose on the side of the insulating strip 173 applied cover plate 61, which is arranged during expansion of the transverse uteri 62,63 of the insulating strip Plastic compound 26 against the longitudinal edge. 55 is pressed. This is possible because of the expanding plastic mass 26 due to the presence of transverse grooves 62

able to act on the inner sides of the cover plates 61. The the. Broadside - the insulating strip 173 opposite .. wall of the groove 7 is longitudinally corrugated, which is denoted by 6 3. Regardless of the shape of the insulating strip 173 and the presence of the cover plate 61, the corrugations 62,63 have the purpose of

TO

on the one hand, enlarge the adhesive surfaces and thus the bond or the longitudinal shear strength of the composite to reinforce. On the other hand, because of the corrugation in directions transverse to one another, there is an improved one Anchoring against forces directed in the longitudinal direction of the aluminum profile rails 1, with the selection of the corrugation directions has been taken into account that the adhesion of the plastic compound 26 on As a rule, aluminum is much better than the material of the insulating strip 173.

In the embodiment according to FIG. 27, the expandable plastic compound 26 is also between the halves an insulating strip 183 arranged and received in a stiffened contact strip 71 made of hard plastic or hard paper. This has a corrugated strip 73. Due to this design, there are channels 74 running transversely to the insulating strip 183 formed, into which the expandable plastic mass 26 is filled. The contact strip 71 can with a or be glued to both halves of the insulating strip 183 to form one component. In both cases he serves as a spacer for the two halves, which is particularly evident in the first case when the halves are pushed into makes the groove 7 advantageously noticeable. The arrows 75 indicate the flow path of the plastic compound 26 at Heating to hardening temperature. The transverse alignment of the channels 74 has the advantage that the plastic mass 26 is passed directly to the groove 7 without flowing axially inside the contact strip 71 and at the end face

to be able to exit from this. The plastic mass not only connects the two halves of the insulating strip with the aluminum profile rail shown here 1, but also to a stable double bridge.

In the exemplary embodiment according to FIG. 28, a contact strip 81 is used which has a cover strip 82 and has transverse web strips 83 which also form transverse channels 84. The channels 84 are divided by a centrally running longitudinal strip 85 with the advantage that the expanding Plastic compound 26 does not predominantly flow downwards due to gravity. Because of its one-sided The cover is the contact strip 81, in particular for use for a one-piece insulating strip 193 thought. After hardening, the cover strip 82 forms one broad side of the insulating strip 183.

The further embodiment shown in FIG. 29 contains an insulating strip 2o3, in which the expanding Plastic compound 26 is received in transverse grooves 9o of the web 91 of the insulating strip 2o3. Flows when heated the plastic compound 26 around the longitudinal edges 92 of a cover plate 93 in the groove 7. To facilitate this Process can the heads 94 of the insulating strip 2o3 gaps 41 have. The cover plate 93 and possibly also the insulating strip 2o3 are expanded by the expansion of the plastic · * · mass 26 pressed against the groove edges 55, whereby a seal takes place. The cover plate 93 can also with a set of teeth 95 encircling the transverse grooves 9o

3® (comparable to the longitudinal strips 85 in Fig. 28). In addition, the cover plate 93 can be held on the insulating strip 2o3 by a latching similar to the position 52 in FIG. 25. The central web 96 of the insulating strip 2o3 is tapered at least on one side

®'5 (p.97) at a height h which is roughly the same as the distance (a) corresponds to 1.2 between the metal profile rails.

* Ht

In the pig. 3o an insulating strip 213 is shown, the heads 1o1,1o2 on their narrow sides 1oo transverse grooves 1o4, 1o5 of different depths. There are two different ones Embodiments. In contrast to the head 1o2, webs 1o6 remain on the head 1o1, which are inserted into the Expanding plastic compound received in transverse grooves 26 from being able to exit the groove 7 on a short path at the groove edge 55. Depending on the type of the plastic compound 26, e.g. if it is cold-flowing is, the transverse grooves - as already described in other embodiments - by a be covered with hot-melt film or the like. Here too, at least one bridge 6ο can be present be.

FIG. 31 also shows two exemplary embodiments

223

The insulating strip shown / has transverse grooves 111 on its broad side, which according to the lower half the insulating strip 223 (see. Position 112) as well on the narrow sides 117, i.e. in the heads 114 can run. The cover plate 115 covering the transverse grooves 111 can, if a cold-flowing one is used Plastic compound 26 in the transverse grooves 111, 112 not only serves the purpose of sealing the not shown Fulfill groove edges (cf. 55, Fig.26), but also the not yet activated plastic compound 26 in the Secure transverse grooves 111. In contrast to a heat-stable cover plate 115, the transverse grooves 112 should cover Elements 116 be hot-flowing in order to ensure a good connection. In the case of the presence of a the bridge covering the cover plate 115 between the metal profile rails can of course also be the cover plate 115 made of hot-flowing material, e.g. made of consist of a film or the like.

A method for producing a ready-to-install insulating strip 3,173,183 can advantageously be based on the following Process steps exist. The contact strip 71.81 is filled with hot-flowing adhesive (melted powder or powder / paste mixture). After he-. Rigid and cool, the contact strip 71, 81 is stored, for example wound on reels. The investment strip 71.81 will be sent to the manufacturer of the insulating strip if required. There he becomes the on the train Insulating strip production glued to the insulating strip, e.g. by superficial heating of the Glue filling. This creates a complete insulating strip 71, 81 covered with plastic compound 26, which is attached to the aluminum press shop can be sent. The advantage is that with a single mixing and molding plant for the plastic compound, several insulating strip manufacturing companies are supplied and they do not have to deal with the processing of new materials.

In particular, the exemplary embodiments according to FIGS. 27 and 28 show that the plastic compound 26 is not must necessarily have a strand shape, but also as spaced apart preferably on the insulating strip arranged bodies or agglomerations can be provided.

attorney 30

UH
- blank page -

Claims (1)

PATENT CLAIMS 1) Method of making a heat insulating Profile body, in particular for use for window or door frames, with the preferably undercut Metal profile rails provided with grooves are arranged at a distance from one another and are made of heat-insulating material existing bridge are interconnected, which engages in the grooves, with at least part of the heat-insulating Material for the purpose of form-fitting adaptation to the profile rails or the formation of an adhesive connection can be activated with the profile rails by supplying heat, characterized in that aluminum profile rails (1,2) are used, and that the heat insulating material before the hardening of the aluminum profile rails (1,2) or before their heating due to another manufacturing measure, e.g. surface coating or finishing, or before a separate heat treatment between the aluminum profile rails (1,2) and those for hardening or the further manufacturing measure required or separate heat treatment is used for activation. 33427G0 2. The method according to claim 1, characterized in that for the activatable part of the heat insulating Materials such a material is used, which also hardens permanently through the heat activation and remains dimensionally stable in the event of further exposure to heat after activation. 3. The method according to claim 1 or 2, characterized in that for the activatable part of the heat insulating material a mixture of epoxy resin with a hardener reacting above 40 C and a hoc boiling propellant, for example Frigen 113 with the formula CFCl ₂ -CF ₂ Cl, which only boils at approx. 47 ° C or azodicarbonamide or sulfohydrazide is used. 4. The method according to claim 1 or 2, characterized in that for the activatable part of the heat-insulating Materials forming a hot-flowing hot-melt adhesive Polyamides are used. 5. The method according to claim 1 or 2, characterized in that that slowly reacting polyurethane resins for the activatable part of the heat insulating material or epoxy resins or polyester resins can be used. 6. The method according to claim 2, characterized in that for the activatable part of the heat insulating material a mixture of expandable material, such as expandable polystyrene, and thermosetting material liquid resin such as polyester resin or epoxy resin is used. 7. Application of the method according to any one of claims 1-6 for the production of a profile body known per se, whose bridge from into the preferred rear cut grooves (7) engaging profiled insulating strips (3), which are connected to the metal profile rails (1, 2) enclose a space filled with an insulating filler compound (6), the filler compound (6) from 5 consists of a pre-product that can be expanded by supplying heat (Fig. 1) 8. Application of the method according to one of the claims 'S 1 to 6, for the production of a per se known product Filkörpers, the bridge of which profiled at least one engaging in the preferably undercut grooves (7) Has insulating strip (133) which can be hardened by pouring in a liquid by supplying heat Pre-product in the preferably undercut grooves (7) is formed (Fig. 17) 9. Application of the method according to one of the claims 1 to 6, for the production of a profile body known per se, the bridge of which at least one is preferred has profiled insulating strip (143) reaching behind the undercut grooves, which are inserted into the grooves (7) engaging end regions is provided with an adhesive (38) which can be activated by the supply of heat (FIG. 18). 10. Application of the method according to one of the claims 1 to 6, for the production of a profile body known per se, the bridge of which is preferably undercut Grooves engaging insulating strips (153) is formed, which preferably consist of a z. B. through fiber optic Strengthening (42) exist even in the heat of tensile scaffolding and with the aluminum profile rails (1, 2) one of one enclose insulating filling compound (6) filled space (5), wherein the space with the grooves (7) is in communication and is also filled with the insulating filler (6), 35 and wherein the filling compound (6) consists of a pre-product which can be foamed by the supply of heat and which during foaming the insulating strips (153) are soaked at least on their side facing the space (5) and in the grooves (7) or includes (Fig. 19, 20) 11. Profiled insulating strip that engages in preferably undercut grooves on the aluminum profile rails a profile body produced by the method according to claims 1 to 6 for the purpose of forming at least a part of the heat-insulating bridge is determined, characterized in that the insulating strips (23, 33, 4 3,. 53, 63, 73, 83, 93, 103, 113) at least in their end areas next to the two aluminum profile rails (1, 2) in the longitudinal direction of the profile for the purpose of creating a receiving space for the activatable Part of the heat insulating material (24, 25, 26) and to achieve a spreading effect by a result expansion of this material caused by activation is divided (Figs. 6-15). 12. Profiled insulating strip according to claim 11, characterized in that it (23, 33, 73) or H-profile shape X-profile shape with folded edges on both sides (28) has at both end regions (Fig. 6, 7, 8). 13. Profiled insulating strip according to claim 12, with an H-profile, characterized in that its legs to the converge towards both end regions (FIG. 7). 14. Profiled insulating strip according to claim 13, characterized in that its legs have a "frozen" have outward tension, which is caused by an outward bending of the legs during heat treatment relaxed (Fig. 7). 15. Profiled insulating strip according to claim 12 with an H-profile, characterized in that at the ends of all four legs also inwardly directed edge folds (31) are provided (Fig. 8). 16. Profiled insulating strip according to claim 11, characterized characterized in that it has a double-T shape and is completely divided between its two end regions (Fig. 9, 10, 13, 14). 17. Profiled insulating strip according to claim 11, characterized in that it has a strip-profile shape and zwisehen both end regions is continuously divided (Fig. 15). 18. Profiled insulating strip according to claim 11, characterized in that its two parts are completely separated from each other are separated and in the middle between the two end areas for the purpose of forming an expanded • receiving space (29) for the activatable part of the heat-insulating Materials (26) a greater distance than at the end areas. Chen have (Fig. 10, 11, 14). 19. Profiled insulating strip according to one of claims 11 to 18, characterized in that its two parts are completely separated from each other, and that the dividing line (32, 35) between the two end regions and / or runs unevenly in the longitudinal direction of the profile, preferably in a zigzag or undulating manner (FIGS. 12, 13, 14). 20. Profiled insulating strip according to claim 19, characterized in that with an odd dividing line (32) zwisehen both halves have the same cross-section at their end regions (FIGS. 12, 14). * 21. Profiled insulating strip according to claim 19 or 20, characterized in that both halves are completely provided with a solid coating (34), which at the heat treatment melts and / or expands and / or forms a heat-adhesive mass (FIG. 12). 22. Profiled insulating strip according to one of the claims 11 to 21, characterized in that the dividing gaps are covered at the two end areas with: a cover plate (27) ^ Q which melts when exposed to heat (Fig. 9). 23. Profiled insulating strips according to one of the claims 11 to 22, characterized in that the located in the receiving space portion of the activatable wärmeisolieren- ¹ ^ the material nearest the end portions with a hot-adhesive composition (25) and is filled in the internal central region (24) having an expanding mass (Fig. 6 ). 24. Profiled insulating strips according to one of the claims 11 to 22, characterized in that the in the receiving space located part of the activatable heat-insulating Materials a heat treatment expandable and heat-adhesive and possibly also heat-curing mass (26) is. (Figures 7-11, 12-15).
25th 25. Profiled insulating strips according to one of the claims 11 to 24, characterized in that the part of the activatable heat-insulating element located in the receiving space Material is viscous, pasty, powdery or solid (Fig. 6-15). 26. Profiled insulating strip according to one of the claims 11 to 24, characterized in that the part of the activatable heat-insulating element located in the receiving space 35 Material is liquid, but is microencapsulated in spheres that melt when exposed to heat. 27. Profiled insulating strip according to one of claims 11 to 26, characterized in that the in the receiving space located part of the heat insulating material reinforcing and / or absorbent additives such as contains fiberglass. 28. Profiled insulating strip according to claim 27, characterized characterized in that the glass fibers are present as a web or strand in the receiving space and with the in liquid form present activatable part of the heat insulating material are impregnated. 29. Profiled insulating strip, which is connected to another Profiled insulating strip for engaging in preferably undercut grooves on the aluminum profile rails a profile body produced by the method according to claims 1 to 6 for the purpose of forming at least a part of the heat-insulating bridge is intended, the insulating strips and the metal profile rails enclose a cavity to be filled with a heat insulating filler, characterized in that the Insulating strip (3) on its side facing the cavity (5) with a strip (20) made of absorbent material, how felt is covered, which is impregnated with a foam precursor and its surface is covered by a film (21) e.g. B. is covered from polyethylene (Fig. 2). 30. Pre-product for the production of a profile body using the method according to any one of claims 1 to 6, wherein the bridge of the profile body of in is preferred undercut grooves of the metal profile rails - 35 engaging profiled insulating strips are formed, which enclose a space with the metal profile rails, which can be foamed by the heat activation of the preliminary product to be introduced into this space, characterized in that, that the intermediate product is made from a fibrous strand soaked with a foamable liquid (12) is preferably formed from felt, that of a felt that melts easily when activated by heat Foil (14), for example one made of polyethylene, is sheathed (Fig. 3, 4), 31. Pre-product for the production of a profile body using the method according to any one of claims 1 to 6, wherein the bridge of the profile body from into the preferably undercut grooves of the metal profile rails , ₅ NEN engaging profiled insulating strips which enclose with the metal profile rails a space which can be foamed by the heat activation of the pre-product to be introduced into this space, characterized in that the pre-product consists of one in the _on cavity (5) to be inserted and extending in the longitudinal direction of the profile body hollow beam (15), which is covered with a fibrous layer (20), in particular one made of felt, which in turn is soaked with a foamable liquid and slightly _O c melting film (21), for example one made of polyethylene, is covered, and that the content of foamable liquid in the fibrous layer is dimensioned so that the foam level (22) does not cover the full height of the room (5) after heat activation the hollow beam (15) reached (Fig. 5). 32. Profile body according to one of claims 1 to 29, characterized in that at least part of the surface the grooves (7) grooved lengthways (63, Fig. 26} and / or transversely is. 3342760 33. Profiled insulating strip according to one of claims 7 to 32, characterized in that at least one part their surface to be brought into connection with the heat-insulating material (26) lengthways and / or transversely (41,62,9o, 111) is corrugated. 34. Profiled insulating strip according to one of the claims 7 to 33, characterized in that they have at least a contact strip (20, 21, 38, 57) containing preferably expandable, heat-insulating material (13, 20, 26), 71, 81, 1.38) is occupied. 35. Profiled insulating strip according to claim 34, characterized in that the contact strip (71, 81) consists of one stiffened textile, paper or plastic strips. 36. Profiled insulating strip according to claim 35, characterized characterized in that the stiffening by a corrugated strip (73) or web strips (83) is formed. 37. · Profiled insulating strip according to claim 36, characterized in characterized in that the channels (84) formed by the 'corrugated or web strips (73, 83) are transverse to the longitudinal direction the insulating strip (183, 193) run. 38. Profiled insulating strip according to one of the claims 34 to 37, characterized in that the width of the contact strip (71) corresponds to the distance between two insulating strip halves corresponds to (Fig. 27). 39. Profiled insulating strip according to one of claims 7 to 38, characterized in that at least one of its broad sides can be covered by a cover plate Γ39,51 \ , which can optionally be positioned at a distance BATH ORIGINAL 1ο at least one longitudinal edge with the longitudinal edge (55) of the relevant groove leg forming the groove (7) (56) cooperates. 4o. Profiled insulating strip according to Claim 39, characterized in that the cover plate (51) adjoins the The insulating strip (163) can be clipped. 41. Profiled insulating strip according to one of claims ¹ ^ 7 to 4o, characterized in that in the case of an insulating strip (173,2o3, 213,223) with an I ~ or U-shaped cross-section, the central web is corrugated or grooved at least on one side longitudinally and / or transversely. ! 5 42. Profiled insulating strip according to claim 41, characterized in that characterized in that the Längriffeiung or the longitudinal groove by a taper (97) of the central web is formed whose height (h) corresponds approximately to the \ distance (a) between the metal profile rails (1,2). 43. Profiled insulating strip according to claim 39 or 4o, characterized in that the cover plate (51, 82, 93) has one against the broad side of the insulating strip (163, 23) has protruding web or the like (52,85,95). 44. Profiled insulating strip according to one of claims 33 to 43, characterized in that the transverse ribbing (62, So, 111) is formed continuously. 45. Profiled insulating strip according to one of the claims 33 to 44, characterized in that the transverse ribbing (63,1o4,1o5,112) on the narrow sides (I00) of the insulating strip (213,223) is arranged, e.g. in addition to the transverse ribbing (62,9o, 111) on the broad sides. 46. Profiled insulating strip according to claim 45, characterized in that the depth of the transverse ribbing (1o4) is limited by a web (46,1o6). 47. The method according to any one of claims 1 to 1o, characterized in that the activatable heat-insulating Material (2o, 21,38,57,71,81,138) if necessary by means of a cover (73,83) for use objects, in particular Shaped into strands or strips and before joining the bridge (insulating strip 3,163,183,193) is preferably attached to the bridge with the aluminum profile rails (1,2) in the area of the splice. 48. The method according to claim 47, characterized in that the activatable heat-insulating material at the manufacturing site for the insulating strip attached to this, in particular glued. 49. The method according to claim 47 or 48, characterized in that that warm-flowing, activatable heat-insulating material is poured into molds to form the useful body, in particular in shells (foil 21, corrugated strips 73, web strips 83) formed by contact strips.
25th 50. The method according to claim 47 or 48, characterized in that that strips (2o) made of absorbent material, e.g. felt, with heat-insulating material that can be activated to be soaked. BATH