ES2581293T3 - Insulating core for a composite profile for window, door or facade elements and composite profile for window, door or facade elements with insulating core - Google Patents

Abstract

Insulating core (10) for a composite profile for window, door or facade elements, which extends in a longitudinal direction (Z) and with a constant cross section in a plane (XY) perpendicular to the longitudinal direction (Z) and which has a soul body (20), which in a direction of width (X), which is perpendicular to the longitudinal direction (Z), has at least one longitudinal body a winding body (25) for a winding in a groove of the composite profile, with at least one hinge and clamp device, which has a clamp joint (44), which has a first clamp part (46) and a second clamp part (45) corresponding to the first part of clamp (46), a functional part (21) configured as a transverse core, which is attached to the first clamp part (46) forming a single piece and a hinge (43) with a pivot axis (S), which is parallel to the longitudinal direction (Z), to join the first clamp part (46) to the core body (20), wherein the first caliper part (46) and the second caliper part (45) are arranged so that they can be engaged by pivoting the first caliper part (46) around the pivot axis ( S), the functional part (21) is attached to the hinge (43) so that the functional part (21) extends in a closed state of the clamp joint (44) along the height direction (Y ) moving away from the hinge (43), and the hinge (43) and the second clamp part (45) are joined with a first side (22, 23) of the soul body (20).

Description

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DESCRIPTION

Insulating core for a composite profile for window, door or facade elements and composite profile for window, door or facade elements with insulating core

The invention relates to an insulating core for a composite profile for window, door or facade elements and a composite profile for window, door or facade elements with insulating core.

Composite profiles with thermal insulation for window, door or facade elements are known from the state of the art. Typical composite profiles of this type have two metal profiles, which are thermally bonded or separated by one or more plastic insulating souls. Preferably, the metal profiles are made of aluminum or other light metals.

In EP 1 997 998 A2, document E 42 38 750 A1, document DE 195 28 498 C1, document EP 2 044 284 B1 and document US 5,469,683 A are examples of composite profiles of this type. Composite profiles and additional insulating souls are known from the "Standard Profiles 2012" brochure of TECHNOFORM BAUTEC. Document EP 1 255 019 A2, document DE 2007 016 649 U1 and document DE 298 05 607 U1 know insulated souls with hinges .

Document DE 20 2012 006 555 U1 discloses an insulating core for a composite profile with a cover formed in one piece. The lid can be opened through a hinge to place a foam body and then closed through a clamp joint to hold / tighten the foam body.

Figure 1 shows, by way of example, a section of such a composite profile in a cross-sectional view XY perpendicular to a longitudinal direction Z. In the case of the composite profile, they are joined together and thermally separated from each other. aluminum profiles 31, 32 by means of two insulating souls 10. The insulating souls 10 and the aluminum profile parts 31, 32 are joined together by winding. The winding process known in the state of the art is shown in Figure 2 in a cross-sectional view X-Y perpendicular to the longitudinal direction Z of the composite profile or of the insulating core.

The insulating souls respectively have an insulating core body 20, which has on its outer sides that are in transverse direction (width direction) X perpendicular to the longitudinal direction Z longitudinal edges configured as winding heads 25. Winding heads 25 have an essentially trapezoidal cross-sectional shape, which is essentially complementary to the shape of a groove formed in the aluminum profile parts 31, 32. The groove is delimited by a soul 34 also referred to as an anvil and a soul 33 also referred to as As a coiling hammer. The core 33 is deformed (= rolled up) by plastic deformation by rollers not shown from the position shown in continuous lines to the position shown in broken lines. In this way, a shear-resistant joint is established in the longitudinal direction Z, if supported by a knurling of bearing surfaces. At the same time, the aluminum profile parts 31, 32 are placed relatively with each other in the transverse direction X and Y (width and height direction) and are thermally separated.

As can be seen in Figure 1, in the case of the union of the two aluminum profiles 31, 32 by means of the two insulating souls 10 in the manner shown in Figure 1, a hollow chamber 33 is delimited, which presents in the cross section XY, perpendicular to the longitudinal direction Z, an outer wall completely closed.

From the aforementioned documents, it is known by way of example that there are different approaches to subdividing the hollow chamber 33 by transverse souls / walls / ribs or the like, to prevent, in particular, heat losses from an aluminum profile part 31 to the other part of aluminum profile 32 or vice versa by convection and / or radiation.

Figure 3 shows, by way of example, a section of a composite profile in a cross-sectional view XY perpendicular to a longitudinal direction Z, the two aluminum profiles 31, 32 being connected to each other in the case of this composite profile by two insulating souls 10, which respectively have a transverse soul 21. The respective transverse soul 21 extends from one side of the insulating soul body 20 directed towards the hollow space 33 along the height direction Y. By overlapping the zones The hollow chamber 33 is subdivided into two hollow chambers respectively.

The distance between the two insulating souls 10 in the height direction Y can take different measures according to the type and size of the composite profile, so that insulating souls with transverse souls of different length are provided. Transversal souls, in this case, can reach lengths that require larger tools (for example, molds for injection molding) for the manufacture of insulating souls. This, in turn, requires a greater need for material for the tool, as well as a greater need for space. In addition, through the dimensions of insulating souls of this type there is also a greater need for packaging material and storage capacities. In addition, deformations and damage may occur during packaging, storage, transport of insulating souls, particularly in souls

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transversal.

The invention aims to provide a composite profile for window, door or facade elements with an insulating core for such a composite profile that allows simple manufacturability and reduces costs, as well as an ability to store and transport.

This objective is achieved by means of an insulating core according to claim 1, 2, 7 or 8 or a composite profile according to claim 14 or 15.

In the dependent claims improvements of the inventions are provided.

The hinge and clamp device for an insulating core allows the functional element (transverse core) only at a desired time after production (for example, at the root of manufacturing or directly before assembling the composite profile) to pivot in a state in which the transverse core with a maximum predefined length protrudes from the insulating core and, through the clamp joint, is held securely in this position. In this way, a simple, compact and, therefore, economic configuration of the manufacturing tool is guaranteed and, at the same time, a reduced need for packaging material, as well as storage capacity. In addition, deformations and damages are reduced, particularly in transverse souls, since they present (may present) during storage and transport a state turned inwards.

The transverse souls / walls / nerves / joining souls can also be provided to hold foam bodies, the foam body preventing heat conduction between the aluminum profiles in addition to the transverse souls / walls.

In addition, the protected side of the transverse core, that is, the side that in the inwardly turned state faces the insulating core, may have a coating, for example, a metal coating, which is protected due to the inwardly turned state of the transverse soul during transport and storage.

The description of examples of realization by means of the Figures show additional characteristics and conveniences of the inventions. From the Figures, they show:

Figure 1 Figure 2 Figure 3

Figure 4

Figure 5,

Figure 6

 the

 Figure 7

 the

 Figure 8a

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 Figure 8b

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 Figure 9

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 Figure 10

 the

 Figure 11

 the

 Figure 12

a composite profile in a cross-sectional view; a winding process in a cross-sectional view;

a composite profile in a cross-sectional view with conventional insulating souls, which respectively have a transverse core;

a cross-sectional view of a first embodiment of an insulating core in a state in which a clamp joint is open and a transverse core is inclined / pivoted with respect to the side;

a cross-sectional view of the first embodiment in a state in which the clamp joint is closed and the transverse core extends along a direction of height AND away from the insulating core;

a cross-sectional view of a profile composed of two insulating souls of the first embodiment in a state in which the respective clamp joints are closed and the respective transverse souls extend along the height direction and away from the respective insulating souls;

a cross-sectional view of a second embodiment of an insulating core;

a cross-sectional view of a third embodiment of an insulating core;

a cross-sectional view of a modification of the third embodiment of a soul

insulating;

a cross-sectional view of a fourth embodiment of an insulating core; a cross-sectional view of a fifth embodiment of an insulating core; a cross-sectional view of a sixth embodiment of an insulating core with a foam body held by a transverse core;

a cross-sectional view of a seventh embodiment of an insulating core with a foam body held by two transverse souls.

Figure 4 and Figure 5 show a first embodiment of an insulating core 10 for a composite profile. The insulating core 10 has an insulating core body 20 and a functional part configured as a transverse core 21. In a combined state of the composite profile the transverse core 21 is arranged on one side (inner side 22) of the insulating core body 20, which It is aimed at a hollow chamber 33 (see Figure 3).

The insulating core 10 extends in a longitudinal direction Z and with a constant cross section in a plane XY perpendicular to the longitudinal direction (Z) (width direction X - height direction Y, which is perpendicular to the direction of width X) . In the direction of width X, the insulating core 10 has, at the longitudinal edges of its insulating core body, 20 ends 25 configured as winding heads. The heads of

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rolled 25 have a trapezoidal shape to be wound in a complementary groove (see Figures 1, 2, 3). On the sides that are outside in the X-width direction of the winding heads 25, grooves for gluing ropes are configured. These are merely optional. As for the effects and advantages of the type of winding joint, reference is made to the previous description of the state of the art.

A first projection 40 protrudes in the height direction Y of the inner side 22 of the insulating core body 20. A second projection 41 protrudes in the height direction Y of the inner side 22 of the insulating core body 20 and is provided with respect to the first projection 40 in the direction of width X displaced on the inner side 22.

A hinge 43 is configured at one end 40a of the first projection 40 projecting in the direction of height Y. The hinge 43 has a pivot axis S parallel to the longitudinal direction Z, so that a first hinge side 43a and a second side hinge 43b of hinge 43 can pivot relative to each other around pivot axis S. The first projection 40 is connected to the first hinge side 43a of hinge 43.

A first clamp part 46 of a clamp union 44 is connected through the hinge 43 with the first projection 40. A second clamp part 45 of the clamp union 44 corresponding to the first clamp part 46 of the joint clip 44 is provided at one end 41 a of the second boss 41. The first clip part 46 is connected to the end of the second hinge side 43b of the hinge 43. The pivot shaft S and the end of the second hinge side 43b they are in a pivot plane SE. With the same second hinge side 43b of the hinge 43 such as the first clamp portion 46 a transverse core 21 is attached. The transverse core 21 extends away from the end of the second hinge side 43b of the hinge 43 on one side of the pivot plane SE, while the first clip part 46 extends away from the end of the second hinge side 43b of the hinge 43 on the other side of the pivot plane SE. In this way, the transverse core 21 pivots away from the insulating core body 20 when the first clamp portion 46 pivots with respect to the insulating core body 20.

In the embodiment shown, the first clamp part 46 and the transverse core 21 are fixedly connected to each other (configured in a solidary manner) and joined through the hinge 43 in an articulated manner (so that they can pivot around the pivot shaft S of the hinge 43) with the insulating core body 20. The hinge 43 is a curved articulation which, in the case of the embodiment shown, is configured as a sheet hinge.

The transverse core 21 is joined with the curved joint 43 so that the transverse core 21, in a closed state of the clamp union 44, that is, the first clamp portion 46 of the clamp joint 44, is engaged with the second clamp portion 45 of the clamp joint 44, extended along the height direction and away from the curved joint 43.

In addition, the functional part can also be referred to as a wall and, alternatively, be configured as a nerve or as a joint soul or the like.

The insulating core 10 of the first embodiment is provided with the clamp union 44. The expression clamp union must be understood in this application so that all plug connections that hold the clamp portions 45, 46 up to a predetermined antagonistic force. Preferably, clamp, plug or quick joints must be detected, in which taking advantage of the elasticity of the material of the insulating core, this clamping force is generated. Thus, for example, a plug part of a plug connection can be configured as the first clip part 46 and as the second clip part 45 a plug groove can be provided in the insulating core body 20.

Figure 6 shows a composite profile in which two insulating souls 10 of the first embodiment join the two aluminum profile parts 31 and 32 together and delimit a hollow space 33. The insulating souls 10 are shown in Figure 6 in a state in which the respective clamp joints 44 are closed, so that the respective transverse souls 21 extend along the height direction Y so that their respective end areas 21e overlap each other and, thereby , subdivide the hollow space 33. The overlap zone is not limited in this case to the area shown in Figure 6. Thus, the transverse souls can also overlap approximately by their total length. In other words, the length of the transverse souls can be configured until the soul respectively faces.

In the state shown in Figure 6, the transverse souls 21 extend along the height direction Y. The transverse souls 21 can also extend obliquely to the height direction Y away from the insulating core body 20.

In the first embodiment, the curved joint 43 and the clamp joint 44 are provided in the insulating core body 20 so that the transverse core 21 subdivides the hollow chamber 33 in an assembled state of the composite profile and closed clamp joint. in the middle with respect to the width X direction. According to the desired subdivision of the hollow space 33, for example, in the 1: 2 ratio, the curved joint 43 and the

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Clamp union 44 can be provided in any other position in the direction of width X on the inner side 22 of the insulating core body 20.

As modification (not shown), constructive components corresponding to the form of realization shown in Figure 6 of a retention joint can be provided in the end zones 21 and respective of the cross-sectional souls 21 and thereby join together the areas of end of insulating souls. In this way, greater stability can be achieved, for example, which is advantageous in the case of the further process of insulating souls (for example, sawmill).

The hinge and clamp device formed in the first embodiment by means of at least the curved articulation 43, the clamp joint 44 and the functional part 21 can be used in different ways in additional embodiments for an insulating core.

In the second embodiment shown in Figure 7, the hinge and clamp device is provided on an outer side 23 of the insulating core body 20 facing the inner side 22.

Furthermore, as in the third embodiment represented in Figure 8a, two hinge and clamp devices with respective transverse souls 21 can be provided on the same side of the soul body 20. The number of the hinge and clamp devices in the inner side 22 or outer side 23 of the soul body 20 is not limited to two and additional hinge and clamp devices can be provided according to the size of the composite profile. In this case, attention should be paid to the fact that in an open state of the clamp joint 44, that is, the inclined / pivoting state of the transverse core resulting therefrom, the respective transverse souls do not interfere with each other.

By means of displaced arrangement of several transverse souls and corresponding length configuration of the respective transverse souls, for example, a sinuous shape / labyrinth shape of the hollow chamber 33 can be configured.

A modification of the third embodiment is shown in Figure 8b. The transverse souls 21 have an L-shape, the L-shapes of the respective transverse souls 21 being with respect to the direction of inverted image height Y, so that the respective end zones 21 e of the transverse souls 21 in a closed state face the clamp joints 44. In an end zone 21 e of a transverse core 21 a clamp head 61 of a clamp joint 60 is provided and in an end zone 21e of the other transverse core 21 a caliper notch 62 corresponding to the clamp head 61. By this construction, the transverse souls 21 in a closed state of the clamp union 60 comprise a hollow space, which has in the embodiment shown in this case a rectangular cross section in the XY address. Depending on the direction of the hinge and clamp devices on the inner side 22 of the core body 20, shape and length of the respective transverse souls 21 including the end areas 21e, other dimensions and shapes can be provided in cross section, for example, a trapezoidal shape, for the hollow space encompassed by transverse souls 21.

Also, as in the fourth embodiment of an insulated core shown in Figure 9, hinge and clamp devices can be provided on both sides in the direction of height Y, that is, inner side 22 and outer side 23, of the insulating soul body 20.

In Figure 10 a fifth embodiment is shown, in which two insulating souls are provided with respectively a hinge and clamp device. In the case of this embodiment, the respective end zones 21e of the transverse souls 21 are joined together in a solidary manner, so that the two insulating souls 10 form a solidarity unit. Alternatively, the end zones 21 and also can be joined through a retention joint or the like, as described above.

As is known, the hollow chamber 33, which is delimited in an assembled state of the profiles composed of the insulating core body 20 and the profile parts 31, 32, can be subdivided by foam bodies to prevent (additionally), in particular , the heat conduction of one part of aluminum profile 31 to the other part of aluminum profile 32 or the reverse by convection and / or radiation.

The insulating core 10 / insulating core body 20 is configured from a thermoplastic material. The foam has a thermal conductivity in the range of 0.02 to 0.04 W / mK.

For example, polyamide or poly (butylene terephthalate) or mixtures of polyamide-polyphenylene can be used as technical thermoplastic materials as material for the insulating core and foam. In particular, PA6 or PA 66 or PBT or PA-PPE or PA-4.10 or PA 6.10 or PA 6.12 or PA 10.10 or PA 11. The material for insulating core 10 / insulating core body 20 preferably has a mixture of fibers in the range of 10 to 30%, preferably glass fibers, and especially preferably in the range of 20 to 25%. PA 66, GF 25 is especially preferred. As a material for the foam body, PA 6 is preferred. For the foam body, as material PUR, PIR, PS, PE and phenol can also be used. In addition, the use of thermoplastic material

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essentially identical it offers advantages in the recycling for the insulating soul and the body of foam.

The material data for the insulating core mentioned must be understood without foam body also for the embodiments.

In the sixth and seventh embodiments shown in Figures 11 and 12 respectively, a foam body 50 is connected respectively with the insulating core 10 and protrudes in the height direction Y of the insulating core body 20. In an assembled state of the profile Composed, the foam body 50 is disposed on the side (inner side 22) of the insulating core body 20, which is directed towards the hollow chamber 33. The foam body 50 has a rectangular shape in the cross-section XY. The foam body 50 may have in its desired function adapted cross-sectional shapes, which are not necessarily rectangular.

In the embodiment shown in Figure 11, the insulating core 10 and the foam body 50 are connected directly to each other with the types of joint shown in Figure 11. On the one hand, an insertion projection 26 is provided in this case. to engage with the foam body 50 on the inner side 22 of the insulating core body 20, which extends along the height direction and away from the insulating core body 20. Furthermore, it is provided on the inner side 22 of the insulating core body 20 spaced apart from the insertion boss 26 the hinge and clamp device. The transverse core 21 of the hinge and clamp device is provided in an L-shape and has an end zone that extends in an assembled state of the composite profile and in the case of closed clamp joint in the direction of width X moving away from the core transverse 21 and, thus, forms a mandrel 21d to engage with the foam body 50.

Additionally or instead of the types of joint shown in Figure 11, the union of the foam body 50 with the insulating core 10 can also occur by bonding by means of liquid adhesive, glued with double-sided adhesive tape, welding or other joint Low thermal effect. Welding can occur by heating one of the building components or both to make a hot contact surface (hot plate welding, mirror welding), by infrared radiation or by laser or with a combination. The polyamide foam can be unwound in this respect directly on the insulating core body in a continuous process.

In the previous embodiment, the mandrel 21 d is configured in the longitudinal direction Z as a through soul. As an alternative, individual mandrels 21 d can also be provided at predefined distances in the longitudinal direction Z in the transverse core 21.

In addition, the transverse core 21 may have a length in which the mandrels 21d do not engage with the foam body 50, but the mandrels 21d for holding the foam body 50 can overlap a edge of the foam body 50.

The seventh embodiment shown in Figure 12 is a modification of the third embodiment shown in Figure 8a. In this case, flanges 21n are provided at respective free ends of the transverse souls 21 to engage with the foam body 50.

Alternatively, the transverse core 21 may also have a length so that the flanges 21 n do not engage with the foam body 50, but that the flanges 21n for holding the foam body 50 can overlap edges of the foam body 50.

In addition to the union by means of hooking or overlapping of the transverse souls 21 with the foam body 50 by means of the flanges 21n, the foam body 50 can be fixed respectively with the transverse souls 21 by gluing or bonding under thermal effect.

Claims (15)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. Insulating core (10) for a composite profile for window, door or facade elements, which extends in a longitudinal direction (Z) and with a constant cross section in a plane (XY) perpendicular to the longitudinal direction (Z ) and which has a soul body (20), which in a width direction (X), which is perpendicular to the longitudinal direction (Z), has at least one longitudinal body a winding body (25) for a winding in a groove of the composite profile, with at least one hinge and clamp device, which has a clamp joint (44), which has a first clamp part (46) and a second clamp part (45) corresponding to the first clamp part (46), a functional part (21) configured as a transverse core, which is attached to the first clamp part (46) forming a single piece and a hinge (43) with a pivot axis (S), which is parallel to the longitudinal direction (Z), to join the first clamp part (46) to the soul body (20), where the first caliper part (46) and the second caliper part (45) are arranged so that they can be engaged by pivoting the first caliper part (46) around the pivot axis (S), the functional part (21) is attached to the hinge (43) so that the functional part (21) extends in a closed state of the clamp joint (44) along the height direction (Y) away from the hinge (43), and the hinge (43) and the second clamp part (45) are joined with a first side (22, 23) of the soul body (20). 2. Insulating core (10) according to claim 1, the hinge (43) having a first and a second hinge sides (43a, 43b), which can pivot with respect to each other around the pivot axis (S), an end of the second hinge side (43b) being found and the pivot axis (S) in a pivot plane (SE), extending the functional part (21), moving away from the end of the second hinge side (43b), on one side of the pivot plane (SE), while the first clamp part (46) extends, away from the end of the second side of hinge (43b), on the other side of the pivot plane (SE). 3. Insulating core (10) according to claims 1 or 2, wherein at least two of the hinge and clamp devices and one of the hinge and clamp devices are provided on a second side (23) of the body of soul (20), which is opposite the first side (22) in the height direction (Y). 4. Insulating core (10) according to one of claims 1 to 3, wherein at least two of the hinge and clamp devices are provided on the first side (22, 23) of the core body (20). 5. Insulating core (10) according to claim 4, wherein a foam body (50) is provided between the functional parts (21) of the at least two hinge and clamp devices. 6. Insulating core (10) according to claims 4 or 5, wherein the functional parts (21) of the at least two hinge and clamp devices respectively have an end zone (21e) and these can be joined together. 7. Insulating core (10) for a composite profile for window, door or facade elements, which extends in a longitudinal direction (Z) and with a constant cross section in a plane (XY) perpendicular to the longitudinal direction (Z ), the insulating soul having two soul bodies (20) which in a width direction (X), which is perpendicular to the longitudinal direction (Z), each have a winding body (25) in at least one edge longitudinal for a winding in a profile groove, consisting of two hinge and clamp devices, of which each has a clamp union (44), which has a first clamp part (46) and a second clamp part (45) corresponding to the first clamp part (46) , a functional part (21) configured as a transverse core, which is joined in one piece with the first clamp part (46), and a hinge (43) with a pivot shaft (S), which is parallel to the longitudinal direction (Z), to join the first clamp part (46) with the core body (20), in which the first caliper part (46) and the second caliper part (45) are arranged so that they can be engaged by pivoting the first caliper part (46) around the pivot axis (S), the functional part (21) is attached to the hinge (43) so that the functional part (21) extends in a closed state of the clamp joint (44) along the height direction (Y) away from the hinge (43), and in which the hinge (43) and the second clamp part (45) of a hinge and clamp device are attached to a first side (22, 23) of a soul body (20), the hinge (43) and the second clamp part (45) of the other hinge and clamp device are attached to a first side (22, 23) of the other soul body (20), the first side (22, 23) of a soul body (20) is opposite the first side (22, 23) of the other soul body (20) in the height direction with the two hinge and clamp devices, and the respective functional parts (21) of the two hinge and clamp devices are joined together in a solidary manner. 5 10 fifteen twenty 25 30 35 8. Insulating core (10) according to claim 7, the hinge (43) having a first and a second hinge sides (43a, 43b), which can pivot with respect to each other around the pivot axis (S), an end of the second hinge side (43b) being found and the pivot axis (S) in a pivot plane (SE), the functional part (21) extending away from the end of the second hinge side (43b) on one side of the pivot plane (SE), while the first clamp part (46) extends away from the end of the second hinge side (43b ) on the other side of the pivot plane (SE). 9. Insulating core (10) according to one of claims 1 to 8, wherein the hinge (43) is a sheet hinge. 10. Insulating core (10) according to one of claims 1 to 9, wherein a first projection (40) and the hinge (43) is configured on the first side (22, 23) of the core body (20) joined through the projection (40) in a manner integral with the soul body (20). 11. Insulating core (10) according to one of claims 1 to 10, wherein on the first side (22, 23) of the core body (20) a second projection (41) and the second clamp part ( 45) is formed by one end of the projection (41). 12. Insulating core (10) according to one of claims 1 to 10, wherein the second clamp portion (45) is provided as a notch on the first side (22, 23) of the core body (20). 13. Insulating core (10) according to one of claims 1 to 12, wherein the insulating core (10) is formed of a thermoplastic material, preferably a polyamide or a poly (butylene terephthalate) or a polyamide-polyphenylene mixture , more preferably PA6 or PA 66 or PBT or PA-PPE or PA-4.10 or PA 6.10 or PA 10.10, optionally with a fiber blend. 14. Composite profile for window, door or facade elements, which extends in a longitudinal direction (Z), with at least one profile part (31, 32) and at least one insulating core (10) according to one of claims 1 to 13, which extend in the longitudinal direction (Z), wherein the at least one profile part (31, 32) and the at least one insulating core (10) are joined by winding. 15. Composite profile for window, door or facade elements, which extends in a longitudinal direction (Z), with two profile parts (31, 32), which extend in the longitudinal direction (Z), and two insulating souls (10) according to one of claims 1 to 6 or an insulating core (10) according to claims 7 or 8, in which the profile parts (31, 32) and the soul bodies (20) are joined by winding and delimit a hollow chamber (33).