EP0978619B9 - Insulating strip - Google Patents

Abstract

An insulating slat made of plastic, has frame structure (4,6) and connection profile (12) which allows it to be anchored in a metal profile. The frame structure has a longitudinal wall which is 0.3-1.2 (especially 0.5-1.0) mm thick. Heat insulating material is located on both sides of the wall.

Description

Technical area

The present invention relates to an insulation strip Plastic for a composite profile with the characteristics of The preamble of claim 1.

Usual insulation strips are used for the formation of frames in Range of windows, doors and facades used. in the Individual is here for the lowest possible heat conduction between the outward and the inward Areas of a frame. This will be ensures that for reasons of strength necessarily used through metal profiles Plastic strips are connected together at their Outer contour are equipped with connection profiles, for example with a dovetail, a hammer head or the like, so that they are in a respective holding contour of a metal profile can be inserted and in one direction perpendicular to their longitudinal extent in the holding contour are anchored. Thus, such plastic insulation strips ensure which are used to connect at least two metal profiles, for a thermal separation of the inside and the back exterior metal profiles.

State of the art

A thermally insulated composite profile with two metal profiles via engaging with projections in grooves of the metal profiles multi-part insulating webs are connected to each other is in described in DE 42 38 750. The isolating bridge is off two parts, each with a different thickness composed and serves for thermal separation of the outer and inner metal profiles. The multi-part structure this known insulating strip, however, on the one hand a comparatively high production cost and is on the other hand, complex to use.

From DE-A-3 342 700 is a thermally insulated profile body known, with the elongated, profiled insulating strips over edge folds attached at their end regions in Engage grooves in aluminum profile rails. Such one Insulating strip has an open cross-sectional contour, whereby in combination with an aluminum profile rail Can form cavity. There is in the area of Interfering game between the insulating strip and the aluminum profile rail. To one for each Satisfactory connection or anchoring between the aluminum profile and the insulating strip create is a stabilization of the nested Items required. For fixing the insulating strip in the Aluminum profile rail is therefore before hardening Aluminum profile rail can be activated by the supply of heat and foamable intermediate product in the connection area between the profile elements and in the of the insulating strip cavity formed with the aluminum profile rail brought in. For the activation and foaming of the The primary product is the hardening of the aluminum profile rail existing heat is used, so that a positive Connection of the insulating strip with the aluminum profile the foaming material takes place.

DE-A-32 27 509 describes an insulating strip made of plastic, which are at least partially made of foamed plastic porous or cellular structure. The Insulation board an existing made of foamed plastic Have inner core made of a non-foamed jacket Plastic is surrounded. With this construction, the jacket gets increased chemical and physical resistance, so that the insulation strip is anodized together with the composite profile or can be painted hot. Furthermore, the Thermal conductivity of the insulation strip is reduced without doing so to adversely affect their strength.

WO 97/09504 describes a generic insulation strip, which is inserted between two metal profiles. in this connection the insulation strip has two substantially parallel Boundary walls that have a cavity between them form. The boundary walls are over at least one Crossbar connected to each other so that the cavity in the Inside the insulation strip in several, in the longitudinal direction of the Insulating strip divided hollow chambers one behind the other is. The insulation strip is in via connection profiles Grooves of metal profiles of a composite profile used. The thickness and width of the boundary walls and the size of the insulation strip is such that the Heat conduction between the inside and the outside Metal profiles is kept as low as possible. It is however, a reduction in the wall thickness of the insulation strip Reduction of heat conduction to a certain level limited in order not to increase the stability of the entire arrangement compromise. Due to the thermal conductivity of the Production of the insulation strip used material is also always a low heat conduction between the metal profiles to be recorded. There are dimensions for the cavity specified, where the heat transfer in the cavity is so low like when the air is still. WO97 / 09504 represents the closest state of the art.

Presentation of the invention

The invention has for its object an insulation strip for Propose use in a composite profile that is high Has thermal insulation and at the same time sufficient Provides stability.

This task is carried out by an insulation strip with the characteristics of claim 1 solved.

According to the invention, an insulation strip is made of Plastic designed for a composite profile so that the Walls of the frame structure are kept thin. The heat flow through the insulation strip depends heavily on the thickness of the walls, so that this results in a reduction in the heat flow and can improve the insulation properties. In addition, it was found that the provision of thermal insulation material with at least part of the Frame structure is connected, in addition the Thermal insulation can improve. Only the combination of these two measures, optimizing the wall thickness of the Frame structure, and the additional provision of thermal insulation material optimizes the insulation strip Plastic in terms of insulation properties.

Part of the frame structure of the insulation strip is thin-walled designs and displays an area with a wall thickness between 0.3 and 1.2 mm. This wall thickness in the specified area ensures a stable construction the insulation strip, while at the same time being proportionate low heat conduction over the walls is achieved.

According to the invention that is Insulating material on the frame structure in this way attached that part of the mechanical stress on the insulation strip acts from the heat-insulating material is recorded. This enables the frame structure with regard to low heat conduction optimize, as this achieves the required strength is by using the heat insulating material to accommodate the Contributes.

The Frame structure of the insulation strip includes at least one longitudinal wall and several crossbars. By making the frame structure at least one longitudinal wall and several cross bars is constructed. it is easy by appropriate Arrangement of the longitudinal walls and crossbars possible, the required Strength of the insulation strip over the respective To achieve a customized profile. With the term "Longitudinal walls" of the bar become those areas understood, which is in the direction of a longitudinal extension of the Extend bar and the substantially parallel to Are heat flow direction. With the term "crossbars" correspondingly those areas of the framework structure of the Insulation strip understood, which is in a transverse direction of the Extend insulation strip and essentially transverse to Are heat flow direction.

The introduction of insulation material in at least one of the hollow chambers additionally increases the stability of the strip, since the material filled in the hollow chamber additionally stiffens the strip. It has been found that a decrease in the K value (heat transfer coefficient) of the metal profile to K 1,8 1.8 W / m ² K to approximately K = 1.0 W / m ² K can be achieved by providing the heat-insulating material.

If an insulation strip with several neighboring hollow chambers, of which at least one is filled with the heat-insulating material a multi-chamber hollow profile, both with insulation material can have filled as well as air-filled chambers. There are different variants conceivable, for example two neighboring hollow chambers, each with or without Insulation material are equipped and / or neighboring Hollow chambers, alternately filled with insulating material or are not filled. In some cases it is furthermore advantageous in very specific sections the bar to specifically reduce the heat conduction. This can over a multi-chamber hollow profile with appropriately filled Hollow chambers also happen.

This can further optimize thermal insulation happen that the walls of the frame structure are kept thin be, or that suitable recesses and breaks the walls are provided. Cutouts and interruptions of the walls lead to an interruption or extension of the Heat conduction path, resulting in reduced heat conduction results on the insulation strip. The heat flow through the Insulation strip also depends heavily on the thickness of the walls. On low heat flow and good insulation properties achieved by keeping the walls as thin as possible become.

Furthermore, the insulation strip according to the invention for anchoring in a holding contour of a metal profile with connection profiles Mistake. The connection profiles are preferably the Holding contour of the corresponding metal profile adjusted, see above that it is positive and secure in the metal profile are attachable. The provision of an additional Possibility of connection, for example gluing or Foaming, between connection and metal profile for Fastening or anchoring the insulation strip in the Composite profile can thus be omitted. This simplifies the Construction considerably.

Advantageous embodiments are due to the rest Claims marked.

It has been designed for a simple construction of the thermal insulation strip also shown as advantageous if the longitudinal walls in are arranged substantially parallel to each other and / or the crossbars are essentially at right angles from the Extend longitudinal walls. This arrangement results in at least two crossbars and two longitudinal walls one in essential rectangular cross-sectional contour of the Hollow chamber (s), which are also particularly stable Construction of the bar ensures that the respective Cross bar as a stabilizing bar between the longitudinal walls acts. Furthermore, the crossbars are also in this way perpendicular to the direction of heat flow, which is essentially runs along the longitudinal walls, in the insulation strip aligned so that an additional heat conduction over the Crossbars is effectively counteracted.

The insulating strip according to the invention is preferably made of Plastic and has a one-piece (integral) Frame profile on. With an appropriate arrangement, the Insulation strip can be designed as a one-piece component that on the one hand with little effort and on the other hand is easy to manufacture.

With regard to sufficient static strength of the Bar that can be achieved with little effort preferred that the entire frame structure be uniform Has thickness of the walls. This thickness is in the range between 0.3 mm and 1.2 mm, preferably in the range between 0.5 mm and 1.0 mm. In this preferred range is Strength of the insulation strip ensured and a tolerable heat conduction available. The one over the bar flowing heat energy is u. a. through the thickness and the Width of the walls of the frame structure influenced. In this regard, the smallest possible wall thickness to strive for, but without the necessary strength properties to neglect.

In certain applications, depending on the mechanical Loading the bar is a thickness S3 of the range of Frame structure that is adjacent to the insulating material, compared to the thickness of the remaining areas of the Reduced frame structure. S3 is in the Range from 0.15 x S1 to 0.95 x S1. This will, on the one hand advantageously the heat conduction on the Reduced frame structure, the stability by the to the frame structure in the corresponding area warming material is ensured; on the other hand this design to a particularly light construction of the Bar at.

In this connection, it is preferable that the thickness of the Longitudinal walls attached to one with the heat insulating material border filled hollow chamber, in a ratio S3 = 0.2 x S1 to 0.8 x S1 to the thickness S1 of the longitudinal walls, which corresponds to the hollow chamber not filled with the insulating material adjoin. Below the term "adjoin" is a contact between thermal insulation material and the neighboring wall understood

A particularly simple and stable design of the insulation strip results in a preferred embodiment in which the bar has a length of 30 mm to 100 mm, preferably 40 mm to 70 mm, and a width of 10 mm to 100 mm, preferably 15 mm to 80 mm or 20 mm to 50 mm.

This embodiment offers insulation strips that Show hollow chambers, advantages for a uniform Subdivision of the bar into hollow chambers and thus for one good thermal insulation if the hollow chamber is 5 mm high 30 mm, preferably 5 mm to 15 mm, or a height of 5 mm up to 60 mm, preferably 10 mm to 40 mm. This Dimensions of the hollow chamber ensure the design of a sufficiently large filling volume for the Insulation material to effectively reduce heat conduction to achieve.

Advantageously, the thermal insulation material to the Frame structure glued, clamped or with a positive connection connected to it. At a additional protection of the thermal insulation material Glue, clamp or a positive connection, such as. B. undercut tongue and groove connections, gears or Similar, is the thermal insulation material on the insulation strip additionally secured against slipping or loosening. The Connection is therefore extremely stable. This is particularly true the places where mechanical stress is advantageous the thermal insulation material is to be transferred.

Especially when using a pourable insulation material however, it is also possible to make the connection between thermal insulation material and frame structure exclusively by pouring the material into the frame structure and to ensure the resulting connection. This is advantageous in that no additional Manufacturing process steps are needed, and the Connection is easy to make.

In order to easily insert the insulating material into the hollow chamber (s) or recesses in the insulation strip ensure a foam like material for that Insulation material preferred. When using the foam-like Material ensures that the respective hollow chamber completely filled in and thus the largest possible volume insulation material is introduced into the strip. Here will the foam is preferably simply injected into the cavity and then foams in the hollow chamber. It will too preferred to use a foam-like material, which in the Reaction is glued to the hollow chamber wall. By such a bond can the bar in their Wall areas are additionally reinforced and stabilized.

In this context, it is advantageous if that foam-like material made of polyurethane, polystyrene or the like exists. These materials can be easily after injection, foam and are in the hollow chamber in addition, it has comparatively poor thermal conductivity.

This is preferred in certain applications heat-insulating material is strip-shaped. Thereby it is possible to lightly strip the insulation material into the Insert hollow chamber (s) and possibly also for stiffening the last construction in the respective hollow chamber sticking. In addition, by strip-shaped Material certain insulation properties can be achieved, by putting different strips of insulation together be combined.

The use has proven to be useful for the plastic insulation strip of polypropylene, polyethylene, polyamide, acrynitrile-butadiene-styrene or polyethylene terephthalate as advantageous. This Materials can be used with a suitable reinforcement and / or Reinforcing elements are provided to ensure the stability of the To increase insulation strip further. The use of this Materials allows the production of very temperature-resistant and stable strips.

According to a preferred embodiment, the insulation strip recesses in at least one of the longitudinal walls. Such Recesses inhibit the heat flow through the bar additionally. This improves insulation properties achieved. These recesses can have a wide variety of geometries have, for example rectangular are conceivable Cutouts, circular cutouts, triangular Recesses or the like. It is still possible and even more preferred that multiple rows of Cutouts are arranged. Are these recesses in the rows are offset from each other, the Heat flow through the bar is also reduced since none straight connection in the longitudinal direction of the bar in the Framework structure exists.

The heat-insulating material is preferably one appropriate requirements for the insulation strip attached so that it protrudes from the frame profile. For one thing, it will the surface of the bar enlarges, resulting in a larger one Radiation area and thus a lower heat flow leads between inner profile and outer profile. This improves on the one hand the insulation properties of the insulation strip. on the other hand can target certain geometries of the bar through the Insulation material can be realized.

According to a preferred embodiment, the projecting one is Insulation material between projections of the frame structure, which as Recordings seem appropriate. These projections serve mainly to ensure that the insulating material is securely attached Hold place so that it is less susceptible to Is slipping or loosening. This insulation material can on the one hand an insulation material of the insulation strip according to the invention be compared to reinforcing the frame structure serves mechanical load, on the other hand this can thermal insulation material, however, additionally on the Be attached to the outside of the insulation strip and exclusively Isolation and insulation purposes.

Accordingly, the insulation strip according to the invention has Plastic has an integral cross-sectional shape, whereby thin-walled longitudinal walls and crossbars of the insulation strip integral are interconnected. Here is a wall thickness of Longitudinal wall in a range between 0.3 mm and 1.2 mm. By this arrangement can the insulation strip as a one-piece component be designed to handle and with little effort is easy to manufacture. Furthermore, the wall thickness provided according to the invention in the specified Area a stable construction of the insulation strip, being at the same time heat conduction over the longitudinal walls if possible is kept low.

There is one in at least one hollow chamber thermal insulation material filled. The introduction of the insulating or heat insulating material in the designed between longitudinal walls and crossbars Gap allowed in a simple and effective way and Way a reduction in heat conduction across the bar.

In addition, the stability of the bar is increased because the material filled in the hollow chamber additionally stiffens the bar. It has been found that a decrease in the K value (heat transfer coefficient) of the metal profile to K 1,8 1.8 W / m ² K to approximately K = 1.0 W / m ² K can be achieved by the provision of the heat-insulating material ,

Brief description of the drawings

Fig. 1

eine Querschnittsansicht einer Ausführungsform einer Dämmleiste;

Fig. 2

eine Querschnittsansicht einer Ausführungsform der erfindungsgemäßen Dämmleiste;

Fig. 3

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 4

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 5

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 6

einen Ausschnitt aus einem Querschnitt einer weiteren Ausführungsform einer Dämmleiste;

Fig. 7

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 8

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 9

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 10

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 11

eine Querschnittsansicht einer weiteren Ausführungsform einer Dämmleiste;

Fig. 12

eine Seitenansicht einer weiteren Ausführungsform einer Dämmleiste ohne Querstege;

Fig. 13

einen Querschnitt der Ausführungsform der Dämmleiste gemäß Fig. 12 an der Stelle A aus Fig. 12;

Fig. 14

einen Querschnitt der Ausführungsform der Dämmleiste gemäß Fig. 12 an der Stelle B aus Fig. 12;

Fig. 15

eine Seitenansicht einer weiteren Ausführungsform einer erfindungsgemäßen Dämmleiste;

Fig. 16

eine Seitenansicht einer weiteren Ausführungsform einer erfindungsgemäßen Dämmleiste;

Fig. 17

eine Seitenansicht einer weiteren Ausführungsform einer erfindungsgemäßen Dämmleiste;

Fig. 18

eine perspektivische Ansicht einer weiteren Ausführungsform einer Dämmleiste ohne Querstege;

Fig. 19

eine Querschnittsansicht einer weiteren Ausführungsform der erfindungsgemäßen Dämmleiste; und

Fig. 20

eine Querschnittsansicht einer weiteren Ausführungsform der erfindungsgemäßen Dämmleiste.

The invention is described in more detail below on the basis of exemplary embodiments illustrated in the drawings. FIGS. 2, 15 to 17 and 19 and 20 show embodiments of the invention, while the other figures are outside the scope of claim 1 and serve to explain further facial expressions. Show it:

Fig. 1

a cross-sectional view of an embodiment of an insulation strip;

Fig. 2

a cross-sectional view of an embodiment of the insulating strip according to the invention;

Fig. 3

a cross-sectional view of another embodiment of an insulation strip;

Fig. 4

a cross-sectional view of another embodiment of an insulation strip;

Fig. 5

a cross-sectional view of another embodiment of an insulation strip;

Fig. 6

a section of a cross section of a further embodiment of an insulation strip;

Fig. 7

a cross-sectional view of another embodiment of an insulation strip;

Fig. 8

a cross-sectional view of another embodiment of an insulation strip;

Fig. 9

a cross-sectional view of another embodiment of an insulation strip;

Fig. 10

a cross-sectional view of another embodiment of an insulation strip;

Fig. 11

a cross-sectional view of another embodiment of an insulation strip;

Fig. 12

a side view of another embodiment of an insulation strip without crossbars;

Fig. 13

a cross section of the embodiment of the insulating strip according to FIG 12 at point A from FIG. 12.

Fig. 14

a cross section of the embodiment of the insulating strip according to FIG 12 at point B from Fig. 12.

Fig. 15

a side view of another embodiment of an insulation strip according to the invention;

Fig. 16

a side view of another embodiment of an insulation strip according to the invention;

Fig. 17

a side view of another embodiment of an insulation strip according to the invention;

Fig. 18

a perspective view of another embodiment of an insulation strip without crossbars;

Fig. 19

a cross-sectional view of a further embodiment of the insulating strip according to the invention; and

Fig. 20

a cross-sectional view of a further embodiment of the insulation strip according to the invention.

In Fig. 1 is a cross-sectional view Insulation strip 2 made of plastic in a first Embodiment shown. As shown in FIG. 1 has the insulation strip 2 two substantially parallel and in Distance from each other arranged longitudinal walls 4, which between form a cavity. The two longitudinal walls 4 are connected by a total of four crosspieces 6, wherein the crossbars 6 substantially at right angles to the Cavity-facing inside 5 of the longitudinal walls 4 arranged are. Here, the transverse webs 6, as in FIG. 1 can be seen in one piece with the longitudinal walls 4 of the insulating strip 2 trained. By being perpendicular to the longitudinal walls 4 extending crossbars 6 is the cavity inside the Insulation strip 2 in several, in the longitudinal direction of the longitudinal walls 4th the insulating strip 2 hollow chambers 8 arranged one behind the other divided. In this way it can be seen that the bar 2 is designed as a hollow profile. The crossbars 6 and the Longitudinal walls 4 together form the frame structure 7 of the Insulating strip.

There are several on an outer contour 10 of the strip 2 Connection profiles 12 provided. These are shown in the Case as a widening, so-called Dovetail run and show two of which in Fig. 1 top and bottom crossbar 6 to the outside inclined sides, so that a total widened foot or head arises. By means of the Connection profiles 12 is the insulation strip 2 shown in one Holding contour of a (not shown) metal profile, the one has a complementarily shaped groove with undercuts, anchored.

Furthermore, the central, central hollow chamber 8 has a filling made of a heat-insulating material, in the present case a foam on. The foam is the middle one Hollow chamber 8 completely filled. In the in Fig. 1st Hollow chambers 8 shown above and below, however, is not contain thermal insulation material.

As can also be seen in FIG. 1, this is Embodiment, the length D of the insulation strip 2 is greater than a width H. Furthermore, in the drawing above and hollow chambers 8 arranged below have a lower height d1 than the middle hollow chamber 8 with a height d2. Thereby Different volumes of the hollow chambers 8 can be realized become. A thickness S1 of the longitudinal walls 4 corresponds to a thickness S2 of the crossbars 6.

Due to the inventive design of the bar 2 as Multi-chamber hollow profile with thin-walled longitudinal walls 4 and Crosspieces 6 can conduct heat through the strip 2 be significantly reduced. In addition, the additional provision of the insulating foam material in one or more hollow chamber (s) through the heat conduction the bar 2 further reduced significantly.

The foaming of the hollow chamber continues to cause Increase the mechanical strength of the construction by the filling material is part of the mechanical load receives. This allows the wall thicknesses of the longitudinal walls can be further reduced.

In a cross-sectional view shown in FIG second embodiment of the insulation strip 2 according to the invention the aspect of the absorption of mechanical stress by the filling material interacting with the frame structure clear. This embodiment corresponds essentially the embodiment shown in Fig. 1. In contrast to the bar 2 shown in Fig. 1, however, is a thickness S3 of the longitudinal walls 4, which on the middle, with the Insulate 14 filled hollow chamber 8 in comparison to the thickness S1 of the longitudinal walls 4, which correspond to those in the drawing shown above and below, not with the insulation material 14 fill filled hollow chambers 8, reduced design. Here, the relationship of the reduced wall thickness S3 to the thickness S1 by the equation S3 = 0.05 x S1 to 0.95 x S1, preferably S3 = 0.15 x S1 to 0.95 x S1, most preferably S3 = 0.2 x S1 to 0.8 x S1.

The strip 2 is through in the areas of reduced thickness S3 the foam material 14 to increase the strength stiffened. With this design of the insulation strip 2 Heat conduction by reducing the thickness of the longitudinal walls 4 additionally reduced. To the strength in the range of the insulating material 14 adjacent longitudinal walls 4 in any case ensure in the embodiment shown is Foam material 14 additionally with the respective longitudinal walls 4 connected by an adhesive bond, which is an interaction the frame structure with the filling material guaranteed.

In Fig. 3, an insulating strip 2 is shown as a third embodiment in cross section, the structure of which corresponds essentially to the insulating strip 2 shown in Fig. 1. An essential difference between the first and the third exemplary embodiment of the invention shown in FIG. 3 is that the hollow profile of the strip 2 comprises a total of two hollow chambers 8. The two hollow chambers 8 are each completely foamed with the heat-insulating material 14. In this way, the entire hollow profile body of the strip 2 is filled with insulation material 14, which enables a very effective thermal insulation. Because all the walls of the frame structure adjoin a foamed area, the wall thicknesses of the frame structure S ₁ and S ₂ can be chosen to be very small, since part of the mechanical load is absorbed by the foam material, which thus stiffens the frame structure. The small wall thickness of the frame structure also leads to a reduction in heat conduction through the insulation strip. The stabilizing foam can also be glued to the frame structure. However, a sufficient hold between the frame structure and the insulating material is usually achieved without additional gluing, especially when using foam-like insulating material, which is first poured into an area of the insulating strip and then foamed.

The cross-sectional view shown in FIG fourth embodiment of an insulation strip 2 differs from that shown in Fig. 1 in essential in that fork-like connection profiles 12 the outer contour 10 of the bar 2 are formed. About that in addition, those shown in FIG. 4 above and below Hollow chambers 8 opened and, in contrast to the previous embodiments no closed Cross-sectional contour. The middle hollow chamber 8 is here always filled with the insulating material 14, whereby the two outer hollow chambers 8, which are not complete have a closed cross-section (in the drawing above and below) optionally filled with an insulating material could be.

Fig. 5 shows a fifth embodiment of a Insulation strip 2. In this embodiment is the frame structure 7 from two individual components educated. These components each include crossbars 6 and Longitudinal walls 4. The connection of the two individual components happens over the thermal insulation material 14. The Thermal insulation material 14 can either between the Frame structure 7 components glued or clamped be, with a positive connection between the Frame parts 7 and the insulating material 14 for use can come. Such a connection is exemplified in Fig. 6 shown. The thermal insulation material is here with a provided undercut spring, the frame structure 7 with a corresponding undercut groove.

The embodiment of the insulation strip 2 shown in FIG. 5 can but can also be made by the frame structure 7 is initially manufactured with three chambers, the middle chamber, which is then the thermal insulation material, preferably foam material, accommodates 14, initially wider is manufactured when the end width H of the insulation strip 2. After the foam material 14 has been introduced into the middle one Cavity and foaming are milled off the side walls. The foam material 14 thus takes over an essential part the mechanical load acting on the insulation strip 2.

To additionally secure the connection between Frame structure 7 and heat-insulating material 14 is next to it the aforementioned shape in the area of the connection between Frame structure and heat-insulating material possible through Application of adhesive material in addition to the connection consolidate. The shape, the connection in addition secures in the connection area between frame structure 7 and Foam material 14 can, as shown in Fig. 7, also from a Interlocking on the frame structure and a corresponding one There are teeth on the insulating material. This increases the liability between heat insulating material and Frame structure 7 and thus ensures a form-fitting Connection.

The connection profile 12 shown in FIGS. 5, 6 and 7 to the Holding contour of a metal profile (not shown) is on both sides of the insulation strip 2 each as one piece Swallowtail trained in a corresponding Recess on a holding contour of a metal profile intervenes. Of course there are others here too Shapes according to the holding contour of the metal profile conceivable.

The embodiments of FIGS. 5, 6 and 7 shown in FIGS Insulation strips have an interrupted frame structure 7. Because no direct connection through the Frame structure exists, and the heat flow only through that thermal insulation material, the heat flow in the Insulation strip severely limited. Thus, good ones Thermal insulation properties achieved.

Another embodiment, that of FIG. 5 8 is shown in FIG. The insulation material 14 is here glued between two parts of the frame structure 7. in the Contrary to the previously shown embodiments, closes the thermal insulation material between the frame structure 7 is glued, but not flush with the frame structure 7 and especially their longitudinal walls 4, but is on the side extended. Depending on the formation of the composite profile, for the the insulation strip 2 is intended, this can be advantageous because higher thermal insulation is achieved. In addition, the Heat exchange through radiation hampers, which also leads to Achieving good insulation properties is exploited. A Reduction of the convection space also ensures improved insulation properties.

9, 10 and 11 show various aspects of another Embodiment of an insulation strip in this Embodiment is the frame structure 7 from an im essentially continuous longitudinal wall 4 and two on their End arranged transverse webs 6 formed. These crossbars serve to absorb the insulation material and cause it Desired and required stabilization of the insulation strip. The insulation material 14 is on the side of the longitudinal wall on both Pages arranged, symmetrical in the case of Figure 9, in the case of Figures 10 and 11 asymmetrical. The one shown in Fig. 9 Longitudinal wall 4 has interruptions 13, which are in Fig. 10 and 11 longitudinal walls 4 not shown. An interruption of the Longitudinal wall or recesses in the longitudinal wall inhibit the Heat flow over the insulation material due to a lower thermal conductivity is reduced. As Connection profile 12 to the holding contour of a metal profile (not shown) each serve a dovetail that is attached centrally to the outside of the cross profiles 6. Furthermore, the interruptions in the longitudinal wall have the Advantage that this when foaming the insulation material extends through the recesses in the longitudinal wall and thus the two areas of insulation on either side of the Longitudinal walls are formed from a single piece. This increases the mechanical stability of the insulation material.

The insulation material is attached to the side of the longitudinal wall 4. This insulating material 14, for. B. foam material can either be glued to the frame structure 7, the in 9, 10 and 11 shown cross profiles an arcuate Have shape and thus hold the foam mass 14 in addition and secure against loosening in relation to the frame structure. The Insulating material can also be similar to that in FIG. 5 described, introduced in that first a closed hollow profile is formed, in which the Foam material 14 is poured, and then the outer Longitudinal walls are milled away in order to achieve the final shape come, which is shown in Fig. 9. Figures 10 and 11 show Similar to FIG. 8, an insulation strip 2, in which at least one Part of the insulating material 14, which in connection with stands the frame structure 7, protrudes from this. This The insulation material 14 can protrude over the entire length the insulation strip be present, or only over Subareas. As mentioned above, it serves as far as the Allow space in the overall arrangement, the additional insulation by reducing the convection space and as a radiation barrier.

The insulation strip 2 in one of the shown in FIGS. 9, 10 and 11 Embodiments in turn offers good insulation and Thermal insulation properties because the frame structure is thin can be formed because the heat insulating material 14 a Absorbs part of the mechanical load. Thin profiles ensure low heat conduction and thus good Thermal insulation properties.

13 to 17 are further embodiments of the Insulation strip shown. These embodiments common that, as from the side views (Fig. 12, 15, 16th and 17) can be seen the insulation strip along its Cross-sections changing in the longitudinal direction. In particular it can be seen that at least one of the longitudinal walls 4 of the Insulation strip 2 is provided with recesses 15, which to the Leads to cross-sectional changes. Otherwise these recesses reduce closed hollow profile of this embodiment additionally the heat flow. The longitudinal wall can only be in one limited area serve as a thermal bridge. The course of the Heat flow is indicated by an arrow Q in FIGS. 12, 15, 16 and 17 indicated. The recesses 15 in the longitudinal wall 4 of the Insulation strips can have different shapes (circle, rectangle, Triangle etc.). Some of them are through the Figures 12, 15, 16 and 17 shown, however, are others Geometries are also conceivable. With an offset arrangement of Recesses in several rows, as in FIGS. 16 and 17 is shown, the heat flow is further restricted and the Thermal insulation is better because there is no straight connection between the warmer and colder part of the insulation strip consists. Because in this embodiment again thermal insulation material 14 part of the mechanical Loads on the insulation strip 2 can relatively large recess areas can be provided, without endangering the overall stability of the insulation strip.

Cuts through the insulation strip according to FIG. 12 are shown in FIGS. 13 and 14. 13 corresponds to a section the location identified by A-A from FIGS. 12, 14 a cut at the point marked B-B. In the shown embodiment can be seen that the insulation strip additionally an area protruding from the main profile having. However, this is not absolutely necessary but a flush formation of the foam filling 14 in the Insulation strip 2, the cutouts in at least one of their Longitudinal walls 4 is conceivable and in Fig. 18th shown.

Another feature is shown in Figs. 19 and 20. The illustrated embodiment of the invention is based on the in Fig. 2 embodiment shown. For additional However, thermal insulation is another area of thermal insulation Material 18 attached to the insulation strip 2. Usually will this additional insulation 18 glued on. As in Fig. 19 shown, a bracket 19 for this additional insulation in be integrated into the frame structure in the form of projections, which additionally increase the radiation area, as in FIG. 20 shown, the additional insulation area can be easily The guide be glued on. Attaching a holding structure 19 offers an additional protection against slipping the insulation material the advantage that the insulation material in this Holding area can also be pinched, or the Holding area with the insulating material a positive Can enter into a connection.

One aspect of the insulation strip according to the invention is that since it was recognized that part of the heat-insulating material the mechanical load, the frame structure of the Insulation strip can be thin-walled or on some Areas may have recesses or interruptions. This leads to the fact that the thermal insulation properties of the Insulation strip can be improved without relying on mechanical Having to do without strength properties.

In any case, compared to conventional insulation strips further design options for thermal insulation feasible because the strength of the insulation material is used is to the insulation strip against mechanical stress to make it sufficiently stable.

Claims (19)

1. Insulating strip made of synthetic material for a composite profile, including

   a frame structure (4, 6) with two longitudinal walls (4) and several transverse webs (6) which form several adjacent hollow chambers,

   connecting profiles (12) by which the insulating strip (10) can be anchored in a holding contour of a metal profile; wherein

   at least one region of the frame structure is thin-walled, wherein a wall thickness (S1, S3) of the thin-walled region is between 0.3 mm and 1.2 mm;

   characterised in that

   in addition heat-insulating material (14) fills at least one hollow chamber (8), but not all hollow chambers (8), and is connected to at least a portion of the frame structure and cooperates with this portion of the frame structure in such a way that it takes up a portion of the mechanical load on the insulating strip (2); and

   a thickness S3 of a region of the frame structure (4) adjoining the region with heat-insulating material (14) is reduced in comparison with the thickness of the remaining regions of the frame structure (4, 6) not adjoining heat-insulating material.
2. Insulating strip according to claim 1, characterised in that a transverse web (6) is arranged at each end of the at least one longitudinal wall (4) and connected to it.
3. Insulating strip according to either of claims 1 to 2, characterised in that the longitudinal walls (4) are arranged essentially parallel to each other.
4. Insulating strip according to any of the preceding claims, characterised in that the frame structure (4, 6) is manufactured in one piece.
5. Insulating strip according to any of claims 1 to 4, characterised in that the thickness of the thin-walled region of the frame structure (4, 6) is within the range between 0.5 mm and 1.0 mm.
6. Insulating strip according to claim 1, characterised in that the thickness S3 of the longitudinal walls (4) which adjoin a hollow chamber (8) filled with the heat-insulating material (14) is in a ratio S3 = 0.15 to 0.95 x S1 to the thickness S1 of the longitudinal walls (4) which adjoin a hollow chamber (8) not filled with the heat-insulating material (14).
7. Insulating strip according to any of the preceding claims, characterised in that the insulating strip (2) has a length D from 30 mm to 100 mm, in particular from 40 mm to 70 mm, and a width H from 10 mm to 100 mm, in particular from 15 mm to 80 mm, or from 20 mm to 40 mm.
8. Insulating strip according to any of claims 2 to 7, characterised in that the unfilled hollow chamber (8) has a height D1 from 5 mm to 30 mm, in particular from 5 mm to 15 mm.
9. Insulating strip according to any of the preceding claims, characterised in that the heat-insulating material (14) is glued or clamped to the frame structure (4, 6; 7) or connected to it by a form-locking connection.
10. Insulating strip according to any of claims 1 to 9, characterised in that the connection between heat-insulating material (14) and frame structure (4, 6) is formed by filling a region of the frame structure with the heat-insulating material.
11. Insulating strip according to any of the preceding claims, characterised in that the heat-insulating material (14) is a foam-like material.
12. Insulating strip according to claim 11, characterised in that the foam-like material (14) is polyurethane or polystyrene.
13. Insulating strip according to any of the preceding claims, characterised in that the heat-insulating material (14) is strip-shaped.
14. Insulating strip according to any of the preceding claims, characterised in that the insulating strip is constructed from polypropylene, polyethylene, polyamide, acrylonitrile-butadiene-styrene or polyethylene terephthalate.
15. Insulating strip according to any of the preceding claims 1 to 4, characterised in that the insulating strip in at least one of the longitudinal walls (4) comprises recesses (15) which are arranged in one or more rows.
16. Insulating strip according to any of the preceding claims, characterised in that the heat-insulating material (14) protrudes from the frame structure (4, 6).
17. Insulating strip according to any of the preceding claims, characterised in that the frame structure (4, 6) includes projections (19).
18. Insulating strip according to claim 17, characterised in that additional heat-insulating material (18) is mounted between the projections (19).
19. Insulating strip according to any of the preceding claims, characterised in that additional heat-insulating material (18) is mounted on the outside of one longitudinal wall (4).

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