EP0828052B1 - Hollow section member, especially made of plastics with thermal insulation means - Google Patents

Description

The invention relates to a hollow profile made of plastic with means for thermal insulation, in particular for windows, doors and frames, with external walls that pass through approximately parallel running longitudinal side walls and transverse side walls running approximately at right angles thereto are formed, and an interior divided by supporting webs into chambers, wherein at least in the interior or in at least one chamber delimited by the longitudinal side wall a barrier film running at a distance from the longitudinal side wall and parallel to this is arranged and this barrier film spatially divides the interior or the chamber.

An extruded plastic profile for windows, doors or the like is from DE 44 26 331 A1 has become known, in which either the means for thermal insulation in the area the interior or the chamber applied to a support web arranged in the interior is or a wall of the reinforcement profile used in the interior coated with it is.

Another hollow profile window frame is known from DE 94 13 790 U 1, at which the entire hollow profile consists of one or more aluminum hollow profiles and additionally in a further cavity between two spaced apart Aluminum hollow profiles, a thermal insulation strip made of a rigid foam is arranged.

The rigid foam of the thermal insulation strip is through perpendicular to the direction of heat Side surfaces limited and in addition to the opposite walls of the cavity spaced. The cavity arranged between the aluminum hollow profiles becomes through the plastic webs connecting them together or through side walls of the aluminum hollow profiles and the thermal barrier. The one inserted in the cavity Thermal insulation strip is spaced from the vertical direction to the heat transfer direction arranged plastic webs designed to fit. The insertion of the thermal insulation strip can in the course of the assembly of the plastic webs connecting the aluminum hollow profiles or by inserting between them later.

A frame profile made of plastic is known from DE 34 20 903 C3, which is used to achieve this a higher insulation effect with a metal vapor layer, which is a reflection of the causes heat-generating radiation is provided. This metal vapor layer can also as a metal-vapor-coated film in a co-extrusion process within an outer and / or inner wall of the plastic profile. The disadvantage here is that the in the wall inserted film strips on its entire surface with the plastic material is contacted, whereby an unhindered heat transfer from the plastic to metallic foil and vice versa. So the thermal resistance is and the thermal insulation value of the plastic profile is disadvantageously reduced.

DE 43 31 816 A1 describes a profile for the production of windows and doors in particular thermoplastic known. The plastic profile forms at least one Hollow chamber, wherein a reinforcing profile can be inserted into at least one hollow chamber , whose cross-sectional area is smaller than the cross-sectional area of the hollow chamber into which insert the reinforcement profile. The one between an outer surface of the reinforcement profile and gap formed by inner surfaces of the hollow chamber is with a Material with low thermal conductivity largely filled. This is a hollow chamber profile created with a reinforcement profile, which has a reduced thermal conductivity should have. The disadvantage here is that the stability of the profile or that produced with it Frame is reduced. A lack of bending stiffness shows the profile above all Forces directed at right angles to the visible surfaces as the reinforcement profile to form the gap on at least one side does not abut the plastic profile. This in Normal direction to the gap poor bending behavior of the profile can lead to jamming between frame and sash and when installing windows or doors with such Profiles is also special for a tension-free and therefore straight alignment the profiles.

Another hollow plastic profile for frames of windows with one or more hollow chambers is described in DE 32 31 876 A1. In at least one hollow chamber of the Plastic profile is a support profile used to stiffen the plastic profile. The Support profile is designed such that the hollow chamber in several, in the heat transfer direction individual chambers lying one behind the other is divided. This will make one Reduction of heat losses achieved by heat convection or heat conduction. There the air layers in individual chambers formed in this way prefer heat transfer to the Reinforcement profile made of metallic materials and therefore particularly good heat conductor Can only prevent the thermal insulation of the hollow profile not satisfactory. This is mainly due to the fact that the middle hollow chamber or Hollow chambers due to the flanges which have a relatively high thermal conductivity of the support profile is bridged or thermally short-circuited.

Furthermore, according to AT 374 241 B, a multi-chamber hollow profile is known, the closed one middle chamber a filling of a heat and scball isolating foam plastic body having. There can also be a metallic reinforcement profile in the middle chamber be used. The remaining space in the middle chamber is then foamed over the entire length of the profile. Since the reinforcement profile is completely in the Is foamed, is a separation of the hollow profile, the foam plastic and the Reinforcement profile not possible, so this multi-chamber hollow profile is not recycled can be or is excluded from the recycling process.

The present invention has for its object a hollow profile made of plastic, in particular for windows, doors and frames to create, which while maintaining the usual External dimensions have increased thermal insulation and also the recyclability the thermally insulated hollow profile is guaranteed.

This object of the invention is achieved in that the plastic of the hollow profile at the same time is molded onto the barrier film during the extrusion process. The benefits of this are surprising The solution according to the invention, which appears simple, is that the contact surface, which forms the barrier film with the plastic profile, remains relatively small, whereby a direct heat or cold transfer from the barrier film to the plastic or vice versa is reduced. In addition, this arrangement of the barrier film creates a spatial Subdivision of the respective chambers of the plastic profile, which is advantageous How the heat losses through heat convection or heat conduction are reduced. Likewise, however, this means that the barrier film is subsequently introduced within the hollow profile avoided, whereby an inexpensive production of the overall profile can be achieved.

An advantage here is a training according to claim 2, since the division of the chambers the transfer of heating or cooling energy into smaller subchambers via the numerous separate air layers is difficult.

The advantageous design according to claim 3 is a particularly effective inhibition given the heat or cold flow.

With the embodiment according to claim 4, an arrangement of the barrier film in the hollow profile is without additional fasteners possible.

However, an embodiment according to claim 5 is also advantageous, since it provides thermal insulation of the overall profile can be defined in a simple manner.

Due to the design according to claim 6, the location or arrangement of the condensation point can be set differently to each other within the hollow profile.

Further developments according to claims 7 or 8 are also advantageous since they are therefore suitable for every application a different insulation effect can be achieved by the barrier films.

In the embodiment according to claim 9 it is advantageous that when using inexpensive Materials for the barrier film this by applying one or more additional Layers in their thermal insulation behavior in addition to the division of space of the interior can be improved.

Through the development according to claim 10, the degree of reflection or the heat and Cold flow through the hollow profile can be adjusted to different operating conditions.

Due to the design according to claim 11, the inherent rigidity of the barrier film for the insertion process can be varied in the hollow profile and its insulation value. In addition, at appropriate stability of the barrier film this also to improve the static properties of the hollow profile.

An embodiment according to claim 12 is also advantageous since it has a long service life or duration of use of the entire hollow profile when achieving high thermal insulation can be.

The embodiment according to claim 13 achieves an improved with a minimum of reflection area Thermal insulation of the hollow profile.

With the advantageous embodiment according to claim 14, the heat transfer coefficient of the hollow profile due to the reflection of the heat or cold radiation striking the hollow profile additionally reduced.

By designing according to claims 15 or 16, the heat transfer value due to the hollow profile depending on the arrangement of the layer for different purposes be turned off.

However, an embodiment according to claim 17 or 18 is also advantageous, since or cold insulation of the entire hollow profile is additionally improved.

An embodiment according to claim 19 is advantageous, since it makes a one-piece barrier film is created, which facilitates the introduction into the hollow profile.

The advantageous embodiment according to claim 20 or 21 is increased by the sandwich structure with cavities, the thermal insulation capacity of the barrier film significantly.

With the training according to claim 22, the effect of the reflection layer is best used.

With the embodiment according to claim 23 is a high quality and economical education Reflective layer achievable.

It is also advantageous to design the reflection layer according to claim 24, since it is thus a high degree of reflection is achieved.

A further development according to claim 25 is also advantageous since this improves the Holding force of the barrier films in the region of their longitudinal side edges on the plastic of the hollow profile is achievable.

According to another embodiment variant according to claim 26, in addition to adhering also a positive connection between the barrier film and the plastic of the Achieved hollow profile.

With the design according to claim 27 or 28 is a permanent fixation of the barrier film achieved in the chambers without the need for separate connecting means.

However, a further development according to claim 29 is advantageous, as a result of which a permanent one Connection can be achieved with a long period of use.

Due to the configuration according to claim 30, a high holding force of the longitudinal side edges is advantageous reached the barrier film in the plastic of the hollow profile.

With the advantageous embodiment according to claim 31, a comparatively large connection area can can be achieved between the barrier film and the plastic, whereby a high-strength connection between the barrier film and the inner surfaces of the hollow profile can be achieved is.

The embodiment according to claim 32 advantageously prevents complete severing the support webs or outer walls of the hollow profile, which causes the statics of the hollow profile is not adversely affected.

A configuration according to claim 33 is also advantageous, since it makes it complete Interruption of the plastic in the area of the barrier film embedded in it prevented and thus the overall strength of the hollow profile is not adversely affected.

In the embodiment according to claim 34, it is advantageous that it additionally during Forming process a passage of plasticized plastic material in the edge area Barrier film can be done, which additionally in a simple manner without additional Operations a positive retention of the barrier film can be achieved in the hollow profile can.

The embodiment according to claim 35 represents an economical and highly effective training of the reflection layer.

A further development according to claim 36 is also advantageous, since this increases the inherent rigidity or the resistance to deformation of the barrier film can be increased.

The configuration according to claim 37 can reduce the strength of the hollow profile be avoided.

Advantageous further developments are described in claims 38 to 40, because on the one hand the strength of the hollow profile remains unchanged and one more stable retention of the barrier film is guaranteed within the hollow profile.

The training according to claims 41 or 42 is also a secure hold of the Barrier film guaranteed within the hollow profile.

An embodiment according to claim 43 is also advantageous, since through the openings passing through crossbars a positive connection between the barrier film and the hollow profile is reached during the extrusion process.

Additional stiffening or additional separation of the individual chambers can be achieved by the training can be achieved according to claim 44, whereby on the one hand a stiffening of the Barrier film and on the other hand a higher thermal insulation can be achieved.

The embodiment according to claim 45 advantageously prevents complete severing the support webs or outer walls of the hollow profile, which causes the statics of the hollow profile is not adversely affected.

The advantageous embodiment according to claim 46 advantageously reduces the number of parts required for the production of the hollow profile.

The advantageous embodiment according to claim 47 prevents a complete separation of the Support webs in the interior of the hollow profile, whereby the stiffening effect of the support webs in Hollow profile is retained.

Finally, a further development of the hollow profile according to claim 48 is advantageous because this allows the static values of the overall profile to be increased further.

For a better understanding of the invention, this is illustrated in the drawings Exemplary embodiments explained in more detail.

Fig. 1

ein mit einer Sperrfolie erfindungsgemäß ausgebildetes Hohlprofil, im Querschnitt und beispielhafter, vereinfachter Darstellung;

Fig. 2

einen Teilbereich des Hohlprofils, geschnitten, gemäß den Linien II - II in Fig. 1;

Fig. 3

eine andere Ausführung der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 4

eine andere Ausführungsform der Sperrfolie im beispielhaft dargestellten, erfindungsgemäßen Hohlprofil;

Fig. 5

eine weitere Möglichkeit der Anbringung der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 6

weitere Ausbildungsvarianten der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 7

eine weitere Möglichkeit der Anbringung der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 8

eine weitere Ausführungsvariante zur Anbringung der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 9

eine andere Ausführungsvariante eines wärmegedämmten, erfindungsgemäßen Hohlprofils;

Fig. 10

eine weitere Halterungsmöglichkeit der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 11

eine weitere Möglichkeit der Anbringung der Sperrfolie in einem erfindungsgemäßen Hohlprofil;

Fig. 12

eine weitere mögliche Halterung der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 13

eine weitere Halterungsmöglichkeit der Sperrfolie im erfindungsgemäßen Hohlprofil;

Fig. 14

einen Teilbereich einer Kammer eines erfindungsgemäßen Hohlprofils mit einer darin angeordneten Sperrfolie, in vergrößerter Darstellung;

Fig. 15

die Sperrfolie mit dem Hohlprofil nach Fig. 14, in Seitenansicht, geschnitten, gemäß den Linien XV - XV in Fig. 14;

Fig. 16

eine weitere und gegebenenfalls für sich eigenständige Ausbildung sowie Halterungsmöglichkeit der Sperrfolie in einem erfindungsgemäßen Hohlprofil, in Stirnansicht, geschnitten.

Show it:

Fig. 1

a hollow profile designed according to the invention with a barrier film, in cross section and by way of example, simplified illustration;

Fig. 2

a portion of the hollow profile, cut, along the lines II - II in Fig. 1;

Fig. 3

another version of the barrier film in the hollow profile according to the invention;

Fig. 4

another embodiment of the barrier film in the hollow profile according to the invention shown as an example;

Fig. 5

a further possibility of attaching the barrier film in the hollow profile according to the invention;

Fig. 6

further training variants of the barrier film in the hollow profile according to the invention;

Fig. 7

a further possibility of attaching the barrier film in the hollow profile according to the invention;

Fig. 8

a further embodiment variant for attaching the barrier film in the hollow profile according to the invention;

Fig. 9

another embodiment variant of a thermally insulated hollow profile according to the invention;

Fig. 10

a further possibility of holding the barrier film in the hollow profile according to the invention;

Fig. 11

a further possibility of attaching the barrier film in a hollow profile according to the invention;

Fig. 12

a further possible mounting of the barrier film in the hollow profile according to the invention;

Fig. 13

a further possibility of holding the barrier film in the hollow profile according to the invention;

Fig. 14

a partial area of a chamber of a hollow profile according to the invention with a barrier film arranged therein, in an enlarged view;

Fig. 15

the side view of the barrier film with the hollow profile according to FIG. 14, cut according to the lines XV-XV in FIG. 14;

Fig. 16

a further and possibly independent training and the possibility of holding the barrier film in a hollow profile according to the invention, in front view, cut.

As an introduction, it should be noted that in the differently described embodiments same parts with the same reference numerals or same component names provided with the disclosures contained throughout the description analogously to the same parts with the same reference numerals or the same component names can be transferred. The location information selected in the description are also such as. top, bottom, side, etc. related to the figure shown immediately and are to be transferred to the new position in the event of a change of position. Furthermore, individual features from the different exemplary embodiments shown can also be used represent independent, inventive solutions.

1 and 2 is a hollow profile 1 made of plastic in cross section or in longitudinal section shown. This hollow profile 1 is produced and found in the extrusion process especially in construction for frames of windows, doors, partitions or the like. Use. Of course, the invention described below is also applicable Use hollow profiles for casements of windows, doors or the like. The one below Description is not on the cross-sectional shapes shown in the drawings of the hollow profile 1 limited, but also for hollow profiles with U, T, Z-shaped or other cross-section valid.

Outer walls 2 to 6 essentially form the outer outline of, for example, one L-shaped cross section having hollow profile 1. Essentially parallel and spaced longitudinal side walls 7, 8 form in use of the hollow profile 1 visible surfaces 9, 10. At approximately right angles to the longitudinal side walls 7, 8 connecting transverse side walls 11, 12 which are arranged at a distance from one another the longitudinal side walls 7, 8 and preferably have extensions 13, 14 for anchoring in masonry, in a plastic foam or the like. Furthermore, in Longitudinal direction of the hollow profile 1 extending grooves 15 for receiving sealing profiles provided a seal between the frame and the sash to obtain. An interior 16 enclosed by the outer walls 2 to 6 is through Support webs 17, 18, 19 running parallel or at an angle to the outer walls 2 to 6 divided into several chambers 20, 21, 22.

A reinforcement profile 23 is preferably located in a central chamber 21 Increasing the static values such as torsional stiffness, deflection resistance etc. This reinforcement profile 23 consists in particular of metallic Materials and can be rectangular, U-shaped, I-shaped or other Have cross sections. Especially when using metallic reinforcement profiles 23 can be arranged on the inner surfaces of the central chamber 21 support cams 24 be, which protrude into the interior of the central chamber 21. These support cams 24 are designed such that the smallest possible contact area between the metallic reinforcement profile 23 and the walls of the central chamber 21. This results in a direct heat or cold transfer from the reinforcement profile 23 through to the surrounding support webs 17, 18, 19 or outer walls 2 to 6 Heat and cold conduction kept low.

Of course, it is also possible to use the reinforcement profile 23 made of carbon fibers or the like, having poor thermal conductivity and high strength Form materials, in which case the support cams 24 can also be omitted.

The chambers bounded by the longitudinal side walls 7, 8 or assigned to them 20, 22 of the hollow profile 1 are spatially divided by a barrier film 25. This Barrier film 25 runs approximately parallel and at a distance 26 to the longitudinal side wall 7 and 8. The barrier film 25, the chambers 20 and 22 are thus in Sub-chambers 27, 28 extending in the longitudinal direction of the hollow profile 1 are divided. The barrier film 25 can approximately in the middle between the longitudinal side wall 7, 8 and the this adjacent and parallel support web 17 or the outer wall 4 is arranged his.

The barrier film 25 can only one over two opposite walls extend single chamber 20 or 22 or over several adjacent Chambers 20 and 22 may be continuous.

The barrier film 25 is simultaneously with the extrusion process of the plastic body of the hollow profile 1 is introduced into the chambers 20, 22. It is preferred to a reel of barrier film 25 held in stock by a corresponding opening fed into the extruder nozzle, creating a positive connection between the plastic plastic material and the barrier film 25 is formed.

The barrier film 25 extends only between two opposite support webs 18, 19 or between a support web 18 or 19 and a transverse side wall 11, 12 within a single chamber 20 or 22, the respective support webs 18, 19 or the transverse side walls 11, 12 are not completely cut by the barrier film 25, in order not to adversely affect the statics of the hollow profile 1. A complete one Cutting the support webs 18, 19 or the transverse side walls 11, 12 can be done by different Measures can be prevented. So it is possible to have longitudinal side edges 29, 30 the barrier film 25 only over part of a wall thickness 31 of the support webs 18, 19 or to let the transverse side walls 11, 12 penetrate. A depth of penetration 32 of the long side edges 29, 30 is therefore smaller than the wall thickness 31 of the support webs 18, 19 or the transverse side walls 11, 12.

Likewise, it is possible to the longitudinal side edges 29, 30 of the barrier film 25 - as from Fig. 3 can be seen - training jagged. Extensions 33 spaced apart from one another on the longitudinal side edges 29, 30, the transverse side walls 11, 12 or the support webs 18, 19 then also protrude because of the recesses between the extensions 33 the transverse side walls 11, 12 or the support webs 18, 19 in sections successively stay connected, which ensures the stabilizing function of the Support webs 18, 19 and the transverse side walls 11, 12 are preserved. It is also possible that the extensions 33, the transverse side walls 11, 12 or the support webs 18, 19th protrude at least only partially or not at all and arranged within this are.

The barrier film 25 extends continuously over several adjoining chambers 20, 22, are in the barrier film 25 in the contact areas of the crossing Support webs 18, 19 openings 34 arranged in the barrier film 25, which the flow allow the plastic plastic material.

At least one surface facing the closest longitudinal side wall 7 or 8 35 of the barrier film 25 is designed to be reflective in order to meet a surface 35 that strikes it To be able to reflect heat or cold radiation 36. The radiation reflective Surface 35 of the barrier film 25 can be reached in a variety of ways. So it is e.g. possible to form the barrier film 25 as a metal film 37, which has a high degree of reflection having. If necessary, this can also be done by polishing - at least on the surface 35 - be increased.

The barrier film 25 thus increases the thermal resistance between the two long side walls 7, 8, often exposed to different temperatures all by reflecting the heat or cold radiation 36. In a perpendicular to the visible surfaces 9, 10 heat transfer direction - according to a double arrow 38 - the hollow profile 1 accordingly has a lower heat transfer coefficient on. The division also contributes to reducing the k value of the hollow profile 1 of the chambers 20, 22 in several in the heat transfer direction - according to the double arrow 38 - sub-chambers 27, 28 lying one behind the other.

Of course, it is also different from the illustrated embodiment possible to assign the barrier film 25 to only one of the long side walls 7 or 8.

Fig. 4 shows a further possibility of forming the barrier film 25 for subdivision of the chambers 20, 22 in the longitudinal direction of the hollow profile 1, whereby for previous parts already mentioned the same reference numerals are used.

Here, the barrier film 25 with the reflective surface 35 has a reflector-like Shaping on. The barrier film 25 preferably has a bellows-like one or wavy cross-section. The barrier film designed in this way 25 incident heat or cold radiation 36 is thus reflected more effectively, since the heat or cold radiation 36 is reflected back to a higher percentage and is not redirected to surrounding parts or areas.

In addition, with appropriate stability of the barrier film 25, this can also be improved contribute to the static properties of the hollow profile 1.

The barrier film 25 is in this way in the plastic material of the support webs 17, 18, 19th or the outer walls 2 to 6 embedded that a complete separation of the same is avoided. In turn, this can be done by dimensioning the Penetration depth of the barrier film 25 in the plastic and through openings in the Barrier film 25 can be reached.

5 shows another embodiment variant for the arrangement of the barrier film 25 in Hollow profile 1 shown, the same reference numerals for parts already described above be used.

Here, the barrier film 25 dividing the chambers 20, 22 is a multi-layer component educated. In particular, this consists of a base layer 39 and a reflection layer 40, each on the side facing the outer walls 2 to 6 the barrier film 25 is arranged. The reflection layer 40 can be non-positive with the base layer 39 connected metallic foil with a high degree of reflection be formed, or it is also possible to the reflection layer 40 by metal vapor deposition to form the base layer 39. It is also possible to use the reflection layer 40 to train as a chrome layer.

The barrier films 25 are attached in the hollow profile 1 by angling the barrier film 25 in the region of the longitudinal side edges 29, 30 to fold 41, 42 and positive connection of the same with the respective support webs 17, 18, 19 or with an outer wall 2 to 6.

The barrier film 25 is again in the chambers during the extrusion process 20, 22 to introduce that this runs parallel to the longitudinal side walls 7 and 8, respectively and the chambers 20 and 22 divided into the sub-chambers 27, 28. The folds 41, 42 of the barrier film 25 are preferably in the plastic state of the extruded Profile slightly pressed against the respective inner surfaces of the chambers 20, 22.

Likewise, it is possible that the folds 41, 42 against a slight biasing force exert the inner surfaces of the chambers 20, 22 and so maintain the position is reached in the chambers 20, 22 or a permanently non-positive connection is produced with the inner surfaces of the chambers 20, 22.

If necessary, the contact surfaces of the folds 41, 42 can be free of the reflection layer 40 to be a high quality connection between the barrier film 25 and the To reach inner surfaces of the chambers 20, 22. Furthermore, this is advantageous a direct heat transfer between the reflection layer 40 and the plastic prevented.

The reflection layer 40 increases the thermal resistance of the hollow profile 1 above all by the reflection of the heat or Cold radiation 36. A further increase in thermal resistance can can be achieved by forming the base layer 39 as a heat insulation layer 43 since thus the heat transfer between the partial chambers 27, 28 of the chambers 20, 22 is further reduced by heat conduction.

The thermal insulation layer 43, which also functions as a base layer 39, can thereby by any materials known from the prior art with a low Thermal conductivity should be formed.

6 shows a further embodiment of the barrier film 25 in the chambers 20, 22 of the hollow profile 1, the same reference numerals for parts already described above be used.

Here, the chambers 20 assigned to the longitudinal side wall 7 are separated by a Barrier film 25, which is preferably on the surface facing the central chamber 21 is partially provided with surveys 44, divided. These surveys 44 are based on the wall parts of the hollow profile that run parallel to the longitudinal side wall 7 1 and thus ensure the maintenance of the distance 26 between the Longitudinal side wall 7 and the barrier film 25.

The reflecting surface 35 of the barrier film 25 facing the longitudinal side wall 7 can in turn by the material of the barrier film 25 itself, by metal vapor deposition or painting of the barrier film 25 can be achieved.

The chambers 22 delimited by the longitudinal side wall 8 are covered by the barrier film 25 divided into the partial chambers 27, 28 extending in the longitudinal direction of the hollow profile 1. This barrier film 25 representing a sandwich component 45 is replaced by one of the central chamber 21 facing thermal insulation layer 39, one of the long side wall 8 facing reflection layers 40 - preferably in the form of a metal foil 37 - and a composite layer 46 connecting the base layer 39 and the metal foil 37 educated. For the formation of air chambers between the base layer 39 and the reflection layer 40 is the composite layer 46 only in some areas with the surfaces the reflection layer 40 and the heat insulation layer 43 connected. In particular, this can through a dotted, stripe or lattice-shaped composite layer 46 can be achieved with the appropriate layer thickness.

7 shows another embodiment variant of the hollow profile 1 with a reduced heat transfer coefficient, the same for parts already mentioned above Reference numerals are used.

The chambers 20, 22 adjacent to the outer walls 3, 6 are separated by partitions 47, 48 in channels 49, 50, 51 running in the direction of the length of the profile divided. The intermediate walls 47, 48 run parallel to the longitudinal side walls 7, 8 of the hollow profile 1, whereby the channels 49, 50, 51 in the heat transfer direction - According to double arrow 38 - between those arranged essentially parallel to each other Longitudinal side walls 7, 8 are arranged side by side or one behind the other.

The intermediate wall 47 closest to the longitudinal side walls 7 and 8 has the reflection layer on the surface facing the longitudinal side wall 7 or 8 40 for total reflection of the radiation impinging on this reflection layer 40 in Form of cold or heat radiation 36.

The reflection layer 40 on the intermediate wall 47 can in turn by a Metal vapor deposition, painting or by applying a film with a high degree of reflection can be achieved.

By attaching the reflection layer 40 within the hollow profile 1, the Appearance or the color of the hollow profile 1 is not changed. The overall visual impression the hollow profile 1 is thus also in a wrinkle or wave-forming The reflection layer 40 is not adversely changed. The application of the reflective layer 40 on the intermediate wall 47 compared to the application on a outer visible surface 9, 10 of the hollow profile 1 thus less accuracy.

The amount of the reflection layer 40 is always only a fraction in terms of quantity represents the amount of plastic material, whereby the hollow profile 1 after removal of the reinforcement profile 23 can be fed to the recycling process without this negative changes in the properties of the recycled plastic material arise.

The partition walls 47, 48 or a plurality of partition walls are preferred during the extrusion process of the plastic profile.

Of course, it is also possible, as shown in Fig. 8, the channels 49, 50, 51 in Area of the longitudinal side walls 7, 8 by wall parts which can be inserted into the chambers 20, 22 To reach 52. These wall parts 52 consist of several, parallel to each other arranged partition walls 47, 48, the heights of which are essentially a height 53 corresponds to the chamber 20, 22 provided for subdivision. The partition walls 47, 48 are at least one transverse to the partition walls 47, 48 Connecting web 54 held in their parallel and spaced apart arrangement. A width of the connecting web 54 corresponds approximately to a width 55 of that Chamber in which the wall part 52 is to be introduced. With such a dimensioning of the wall part 52 this is in the respective chambers 20, 22 transverse to Longitudinal direction of the hollow profile 1 and a hitting the wall parts 52 to the Inner surfaces of the chambers 20, 22 are excluded.

The wall parts 52 are preferably on the longitudinal side walls 7, 8 facing Provide surface areas with the reflection layer 40. It is also possible the surface of the connecting webs 54 and also that of the central chamber 20 facing surface areas of the intermediate walls 47, 48 with the reflection layer To train 40.

Furthermore, it is possible to connect the connecting webs 54 of the wall parts 52 perpendicular to the To arrange transverse side walls 11, 12 offset in the direction extending, that is a straight line Extension of a connecting web 54 over the entire width 55 of a chamber 20, 22 to avoid. Due to the overlap of the reflection layers 40 on the Intermediate walls 47, 48 thus create a complete shielding of the reinforcement profile 23 compared to the heat or cold radiation 36.

The wall parts 52 are inserted into the chambers 20, 22 of the plastic profile preferably after the plastic profile has run out of the calibration or cooling devices, whereby the plastic profile with without additional processing steps the wall parts 52 can be provided and thus an inexpensive, industrial Series production of the plastic profile with thermal insulation is given. The moving in the wall parts 52 can also be parallel to the pulling-in process of the reinforcement profile 23 take place. The wall parts 52 are preferably extruded Bar material made of plastic or other low thermal conductivity having materials formed. The application of the reflection layer 40 on the Wall part 52 is preferably carried out before being introduced into the hollow profile 1 Evaporation with metal, painting or sticking of reflective foils.

Fig. 9 shows another embodiment variant of the hollow profile 1 with means for thermal insulation.

In this case, the chambers 20, 22 adjacent to the longitudinal side walls 7, 8 are at least partially filled by a plastic foam body 56. Preferred on the Longitudinal side wall 7 or 8 facing surface 35 of the plastic foam body 56, the reflection layer 40 is arranged. The reflection layer 40 is preferred through a metal foil 37, e.g. an aluminum foil is formed, which with the plastic foam body 56 is glued. The plastic foam body 56 with the metal foil 37 thus forms a compact, multilayer insulation body 57, which for Longitudinal side wall 7 or 8 to form a hollow chamber 58 between the reflection layer 40 and the outer walls 2 to 6 and the support webs 17 to 19 in the distance 26 to the respective longitudinal side wall 7 or 8 is arranged. That of the long side walls 7 or 8 spaced arrangement of the insulation body 57 can optionally by projecting from the inner surfaces of the chambers 20, 22 and substantially Brackets 59 extending parallel to the longitudinal side walls 7, 8 can be secured. These holders 59 are formed during the extrusion of the plastic profile.

The insulation body 57 are preferred when leaving the cooling section for the Plastic profile inserted or drawn into the chambers 20, 22. With appropriate Dimensioning of the plastic foam body 56 can its elasticity be used to apply a prestressing force to the inner surfaces of the chambers 20 or 22 exercise. Thus, the position of the insulating body 57 is despite the hollow chamber 58 reliably met. In this case, the holder 59 can also be omitted.

The insulation body 57 can be introduced with the aid of a broken line Tool 60 shown take place, which with the insulation body 57 during the pull-in process is in a positive connection. In particular, protrusions grip on the tool 60 into the plastic foam body 56 and through the push or tensile tool is also an insertion of the insulating body 57 in longer Plastic profiles possible. The insertion of the insulation body 57 can in turn take place simultaneously with the insertion of the reinforcing profile 23. After this The tool 60 and the plastic foam body can insert the insulation body 57 56 are disengaged and this through the hollow chamber 58 again be removed.

10 to 15 are other possible embodiments of the hollow profile 1 with means for thermal insulation arranged therein, in particular the arrangement of Barrier films 25 are shown in simplified form, with each individual, different embodiment can represent an independent solution according to the invention. Furthermore, the same reference numerals as in Figs. 1 to 9 are used for the same parts.

The cross-sectional different hollow profiles 1, according to FIGS. 10 to 13 can again from the different, mutually arranged outer walls 2 to 6 are formed, which essentially each have the outer contour of the hollow profile 1 establish. The longitudinal side walls 7, 8 form in the use position of the hollow profile 1 the visible surfaces 9, 10, again in turn approximately at right angles to the longitudinal side walls 7, 8 extending and also spaced transverse side walls 11, 12 are arranged, which the longitudinal side walls 7, 8 in their end regions connect. Of course, a wide variety of grooves 15 can in turn Recording of sealing profiles or other components may be provided. The single ones Outer walls 2 to 6 enclose the interior 16, which is additionally by means of support webs 17 running parallel or at an angle to the outer walls 2 to 6 to 19 is divided into several chambers 20 to 22 separated from each other. On the description of the training and arrangement of the reinforcement profile 23, the support cam 24 and other parts in one of the chambers, in particular in the Central chamber 21 is referred to the previous figures or reference taken.

Furthermore, at least one is at least in the area of one of the visible surfaces 9, 10 Chamber 20, 22 arranged which through the different outer walls 2 to 6 or the support webs 17 to 19 is bounded. These previously described outer walls 2 to 6 or the supporting webs 17 to 19 form 20 to 22 for each of the individual chambers these bounding surfaces 61, with at least two opposite one another these surfaces 61 each have at least two holding webs immediately adjacent to one another 62 are arranged thereon on the hollow profile 1 and the surfaces 61 are preferably in Extend in the direction of the interior 16, the holding webs 62 preferably parallel to the longitudinal side walls 7, 8 forming the visible surface 9, 10 are aligned. This Projection of the holding webs 62 over the surfaces 61 can be between 0.5 mm and 10.0 mm be. Of course, a multiple arrangement is also preferred, in pairs arranged holding webs 62 in the individual chambers 20 to 22 possible and depends on the respective profile cross-section or the thermal insulation value to be achieved or the k value (heat transfer value).

The respective opposite and mutually associated retaining webs 62 are included preferably arranged in planes aligned parallel to the longitudinal side walls 7, 8, which, however, are distant from these, but with the distances individual associated retaining webs 62 to other also related Retaining webs 62 can be different. The individual assigned to each other and opposite retaining webs 62 can at least over part of one Dimension 63 of individual chambers 20, 22 in parallel to the longitudinal side walls 7, 8 Location extend, but it is also possible that this over the full Dimension 63 of the chambers 20, 22 extend.

In the exemplary embodiments shown here in FIGS. 10 to 13, all are in each case Area of the longitudinal side walls 7, 8 arranged chambers 20, 22 each at least assigned a barrier film 25, but it is also possible independently of this is to only assign at least one barrier film 25 to each of these chambers 20, 22.

The barrier film 25 is in the individual chambers 20, 22 in a parallel position to the Longitudinal side walls 7, 8 or in a preferably rectangular position to the heat transfer direction - Aligned according to the double arrow 38 - and from the long side walls 7, 8 spaced apart in the distance 26. The distance 26 starting from the longitudinal side walls 7, 8 in each of the individual in the chambers 20, 22 arranged barrier films 25 may be chosen the same. But it is also possible how 11, the distance 26 between the barrier film 25 and the longitudinal side wall 7, 8 to differently form each other in different chambers. This depends on the choice of the profile cross section and the arrangement of the individual Chambers 20, 22 depend on each other and can of course be chosen freely.

The barrier film 25 can be, for example, a film made of plastic, in particular be made of polyester, PVC (polyvinyl chloride), etc., one surface 35 of the barrier film 25 of the longitudinal side wall 7 or 8 and one facing away from it Surface 64 of the central chamber 21 faces. But it is independent of it possible, the barrier film 25 from a foil made of metal, in particular gold and / or Silver and / or bronze and / or platinum and / or chrome and / or aluminum or the like. to build. Of course, a combination or a multilayer or multilayer barrier film 25 made of the aforementioned film materials possible. Furthermore, it can be seen from these representations that the immediately adjacent Retaining webs 62 each the surfaces 35, 64 of the barrier film 25 starting from whose longitudinal side edges 29, 30 overlap at least in regions. The immediately arranged in the region of one of the longitudinal side edges 29, 30 and assigned to one another Retaining webs 62 have surfaces 35, 64 of the barrier film 25 facing retaining surfaces 65, 66, which rest on the surfaces 35, 64 of the barrier film 25. there it is possible that these holding surfaces 65, 66 of the holding webs 62 at least in some areas connected to the surfaces 35, 64 of the barrier film 25 and / or molded onto it are.

Furthermore, it is also possible, regardless of how this is done in the chambers 22 in FIG FIG. 12 shows that at least one of the surfaces 35, 64 of the barrier film 25 is covered by a retaining web 62. With a bilateral and continuous arrangement the holding webs 62 is the barrier film 25 in the area of both surfaces 35, 64 covered by these, including a connection in regions between the barrier film 25 and the plastic material of the hollow profile 1 is possible. Independently of But it is also possible with a double-sided and continuous arrangement of the Retaining webs 62 through the surfaces 35, 64 arranged openings 67 in the To provide barrier film 25, as is also shown schematically in dashed lines in FIG. 12 is indicated, whereby an additional connection of the two on both sides of the Barrier film 25 arranged retaining webs 62 by the during the extrusion process in the plasticized state and passing through the openings 67 Plastic material is created.

By arranging at least one barrier film 25 in each of the chambers 20, 22, the subdivision of the same into the one described in FIG Longitudinal direction of the hollow profile 1 and in the heat transfer direction - according Double arrow 38 - partial chambers arranged one behind the other or next to one another 27, 28. But it is also essential that the barrier film 25 at the same time as the Extrusion process of the plastic body for the hollow profile 1 in the respective chambers 20, 22 introduced and connected to the plastic material at least in regions will, as has already been described previously.

14 and 15 is a portion of a chamber 20 on an enlarged scale shown, which can be seen here that a width 68 of the barrier film 25 between the spaced apart longitudinal side edges 29, 30 approximately the inner dimension 63 corresponds to the respective chamber 20. As a result, the long edges run 29, 30 approximately in alignment with the inner surfaces 61 of FIG respective chamber 20. In order to now hold the barrier film 25 within the chamber 20, are the holding webs already described above on two opposite surfaces 61 62 arranged, the barrier film 25 between each directly assigned to each other Holding webs 62 arranged or on the one facing the other Holding surfaces 65, 66 is held or molded.

In addition, it is also possible, as shown in FIG. 15, in the area of Longitudinal side edges 29, 30 or in a coverage area between the at the Holding webs 62 arranged holding surfaces 65, 66 and the surfaces 35, 64 in the longitudinal direction to arrange openings 69 spaced apart from one another in the barrier film 25, which enforce them. The training or the choice of the cross-sectional shape the breakthroughs are free according to the respective requirements or those to be achieved Holding force selectable and not tied to the cross-sectional shape shown. Thereby it is possible that between each directly facing holding surfaces 65, 66 of the holding webs 62, these cross webs 70 are arranged, which pass through the openings 69 in the barrier film 25. These crossbars 70 will be during the extrusion process and formation or shaping of the individual holding webs 62 molded by the still plasticized plastic material, being in the area of the spaced longitudinal side edges 29, 30 additionally a positive connection through the protruding through the openings 69 Crosspieces 70 is achieved. But it would also be possible regardless of the Barrier film 25 at least in the region of one of its longitudinal side edges 29, 30 or in Coverage area with the holding webs 62 with an adhesive layer, such as e.g. a primer layer or the like. To ensure good adhesion of the plastic material to reach the barrier film 25.

To improve the thermal insulation properties of the barrier film 25, it is still additional possible, at least one of the surfaces 35, 64 thereof with a layer 71 to be provided or applied thereto, this layer 71, for example one of the surfaces 35, 64 is vapor-deposited and / or the surface 35, 64 is vapor-deposited as well optionally laminated onto the barrier film 25 and / or coated with it can be. This layer 71 can, for example, by a metal layer, in particular made of gold and / or silver and / or bronze and / or platinum and / or chrome and / or Aluminum be formed. The barrier film 25 preferably has a crosswise direction to its longitudinal extent a thickness 72 between 0.05 mm and 10.0 mm, preferably between 0.075 mm and 1.0 mm, whereby the barrier film 25 has a certain intrinsic stiffness or one certain resistance to deformation at the same time as the extrusion process has accompanying insertion process or molding process.

16 is a further and possibly independent training the barrier film 25 shown in an enlarged scale in the hollow profile 1, wherein again the same reference numerals as in FIGS. 1 to 15 are used for the same parts become.

The barrier film 25 or the layers forming this and / or the layer 71 is included heat-resistant and / or weather-resistant and / or UV-resistant, because this results in a long service life and thus a good thermal insulation value can. In addition, the barrier film 25 and possibly the layer 71 should be reflective, in particular heat rays should be formed reflectively, as a result of which Barrier film 25 and / or the layer 71 is formed as a heat-insulating layer or layer is. For even better thermal insulation or an even higher degree of reflection To achieve, the barrier film 25 and optionally the layer 71 can be multilayered or formed in several layers from the materials previously described be, as is shown in simplified form in the region of the longitudinal side edge 30. Independently however, the reflection layer mentioned in the figures described above can also be used 40, e.g. also made of gold and / or silver and / or bronze and / or platinum and / or chrome and / or aluminum etc. may be formed, as previously for the barrier film 25 or layer 71 has been described.

To achieve a positive connection between the barrier film 25 and the Plastic of the hollow profile 1 can the barrier film 25 at least in the area of one of them Longitudinal side edges 29, 30 - in the present exemplary embodiment only in the area of Longitudinal edge 29 shown - a bend 73 and / or a bead and / or one Envelope and / or have a fold, for the sake of simplicity a multiple Bend 73 has been shown schematically. This will in the area of Longitudinal edges 29, 30 of the barrier film 25 a positive connection with the Plastic of the hollow profile 1, in particular with the outer walls 2 to 6, the support webs 17 to 19, and optionally achieved with the holding webs 62, whereby the Tear-out strength of the barrier film 25 made of the plastic can be additionally increased can.

At least one of the surfaces can be used to increase the inherent rigidity of the barrier film 25 35, 64 of the barrier film 25 deformed, in particular with impressions 74 of the most varied Be provided, as this is also simplified schematically has been shown in the central region between the longitudinal side edges 29, 30.

Finally, for the sake of order, it should be pointed out that individual figures in the drawings Components and assemblies disproportionate for a better understanding of the invention and are shown distorted to scale.

Individual features of the individual exemplary embodiments can also be combined with others Individual features of other exemplary embodiments or in each case individually Form the subject of independent inventions.

Above all, the in Figures 1, 2; 3; 4; 5; 6; 7; 8th; 9; 10; 11; 12; 13; 14, 15; 16 shown versions the subject of independent, inventive solutions form. The relevant tasks and solutions according to the invention are can be found in the detailed descriptions of these figures.

REFERENCE NUMBERS

1

hollow profile

2

outer wall

3

outer wall

4

outer wall

5

outer wall

6

outer wall

7

Longitudinal side wall

8th

Longitudinal side wall

9

viewing area

10

viewing area

11

Transverse side wall

12

Transverse side wall

13

extension

14

extension

15

groove

16

inner space

17

supporting web

18

supporting web

19

supporting web

20

chamber

21

chamber

22

chamber

23

reinforcement profile

24

Abstütznocke

25

barrier film

26

distance

27

member chamber

28

member chamber

29

Longitudinal side edge

30

Longitudinal side edge

31

Wall thickness

32

penetration depth

33

extension

34

breakthrough

35

surface

36

Heat or cold radiation

37

metal foil

38

double arrow

39

support layer

40

reflection layer

41

fold

42

fold

43

thermal insulation layer

44

survey

45

sandwich component

46

composite layer

47

partition

48

partition

49

channel

50

channel

51

channel

52

wall part

53

height

54

connecting web

55

width

56

Plastic foam body

57

Insulation body

58

hollow

59

holder

60

Tool

61

area

62

holding web

63

dimension

64

surface

65

holding surface

66

holding surface

67

breakthrough

68

width

69

breakthrough

70

crosspiece

71

layer

72

Strength

73

fold

74

impressing

Claims (48)

1. Hollow section member (1) made from plastics by an extrusion process, with heat-insulating means, in particular for windows, doors and frames, having external walls (2 - 6) formed by substantially parallel longitudinal side walls (7, 8) and transverse side walls (11, 12) extending substantially perpendicular thereto, and a cavity (16) divided into chambers (20 - 22) by supporting webs (17 - 19), at least one barrier film (25) being disposed in the cavity (16) or in at least one chamber (20, 22) bounded by the longitudinal side wall (7, 8) extending at a distance (26) back from the longitudinal side wall (7, 8) and parallel therewith, characterised in that this barrier film (25) spatially divides the cavity (16) and the chamber (20, 22), and the synthetic material of the hollow section member (1) is simultaneously moulded onto the barrier film (25) during the extrusion process resulting in a non-positive join between the plastic synthetic material and the barrier film.
2. Hollow section member as claimed in claim 1, characterised in that the barrier film (25) divides the chamber (20, 22) into a first part-chamber (27) adjoining the longitudinal side wall (7, 8) and a second part chamber (28) disposed between the barrier film (25) and a supporting web (17) or an external wall (4).
3. Hollow section member as claimed in claim 1 or 2, characterised in that the barrier film (25) is disposed substantially in the middle between the longitudinal side wall (7, 8) and the supporting web (17) or external wall (4) adjacent to and extending parallel therewith.
4. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) is disposed in the region between two substantially parallel supporting webs (18, 19) forming the chambers (20, 22) or a supporting web (18, 19) and the external wall (2, 4, 5) spaced at a distance apart.
5. Hollow section member as claimed in one or more of the preceding claims, characterised in that several chambers (20, 22) respectively adjoin at least one barrier film (25).
6. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier films (25) are disposed at a different distance (26) from the longitudinal side wall (7, 8).
7. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) is a film of synthetic material, in particular polyester or PVC (polyvinyl chloride).
8. Hollow section member as claimed in one or more of claims 1 to 6, characterised in that the barrier film (25) is a film of metal, in particular gold and/or silver and/or bronze and/or platinum and/or chromium and/or aluminium.
9. Hollow section member as claimed in one or more of the preceding claims, characterised in that at least one of the surfaces (35, 64) of the barrier film (25) has a layer (71), which is applied in particular by painting, and/or pasting and/or vapour deposition.
10. Hollow section member as claimed in claim 9, characterised in that the layer (71) is a metal layer, in particular of gold and/or silver and/or bronze and/or platinum and/or chromium and/or aluminium.
11. Hollow section member as claimed in one or more of the preceding claims, characterised in that the thickness (72) of the barrier film (25) transversely to its longitudinal extension is between 0.05 mm and 10.0 mm, preferably between 0.075 mm and 1.0 mm.
12. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) and/or the layer (71) is heat-resistant and/or weatherproof and/or UV-resistant.
13. Hollow section member as claimed in one or more of the preceding claims, characterised in that at least one surface (35) of the barrier film (25) directed towards the closest adjacent longitudinal side wall (7, 8) is reflective, in particular reflects heat radiation.
14. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) is reflective, in particular reflects heat radiation.
15. Hollow section member as claimed in one of claims 9, 10 or 12, characterised in that the layer (71) is reflective, in particular reflects heat radiation.
16. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) and/or the layer (71) is a heat-insulating layer or lining.
17. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) has several layers or several plies.
18. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) is made from a heat-insulating (43) layer provided with a reflective layer (40).
19. Hollow section member as claimed in claim 18, characterised in that the reflective layer (40) is bonded to the heat-insulating layer (43) by means of a bonding layer (46).
20. Hollow section member as claimed in claim 19, characterised in that certain regions of the bonding layer (46) are bonded to the surfaces of the reflective layer (40) and the heat-insulating layer (43).
21. Hollow section member as claimed in one of claims 18 to 20, characterised in that the bonding layer (46) is provided with orifices and is in the form of strips, a net or a lattice, for example.
22. Hollow section member as claimed in claim 18 or 19, characterised in that the reflective layer (40) is disposed on the side of the barrier film (25) directed towards the external wall (3, 6).
23. Hollow section member as claimed in one of claims 18 to 20 or 22, characterised in that the reflective layer (40) is a metal vapour-deposited layer or a varnish coating or a film.
24. Hollow section member as claimed in one of claims 18 to 20, 22 or 23, characterised in that the reflective layer (40) is made from a metal, for example aluminium, chromium or similar.
25. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) is provided with an adhesive layer, at least in the region of its longitudinal side edges (29, 30).
26. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) has a bend (73) and/or a crease and/or a tuck and/or a fold, at least in the region of one of its longitudinal side edges (29, 30).
27. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) dividing the chambers (20, 22) is heat-bonded by its longitudinal side edges (29, 30) to the supporting webs (18, 19) and/or external walls (2, 5).
28. Hollow section member as claimed in one or more of the preceding claims, characterised in that the longitudinal side edges (29, 30) of the barrier film (25) are embedded in the plastics.
29. Hollow section member as claimed in one or more of the preceding claims, characterised in that the longitudinal side edges (29, 30) of the barrier film (25) are bonded to the plastics of the hollow section member (1) in a non-positive join.
30. Hollow section member as claimed in one or more of the preceding claims, characterised in that the longitudinal side edges (29, 30) of the barrier film (25) are bonded to the plastics of the hollow section member (1), in particular to the external walls (2 to 6), supporting webs (17 to 19), retaining webs (62), in a positive join.
31. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) has a bent-back fold (41, 42) in the region of its longitudinal side edges (29, 30) which is bonded to the supporting webs (18, 19) or a supporting web (18, 19) and the external wall (2, 5) spaced back at a distance, or is embedded therein.
32. Hollow section member as claimed in one or more of the preceding claims, characterised in that a penetration depth (32) of a longitudinal side edge (29, 30) is shorter than a wall thickness (31) of the supporting webs (18, 19) and the external walls (2, 5).
33. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) has mutually spaced projections (33) disposed at the longitudinal side edges (29, 30) in the longitudinal direction of the barrier film (25), which project at least partially through the external walls (2, 5) and the supporting webs (18, 19).
34. Hollow section member as claimed in one or more of the preceding claims, characterised in that in the region of the longitudinal side edges (29, 30), the latter are perforated with orifices (69) spaced at a distance apart from one another in the longitudinal direction of the barrier film (25).
35. Hollow section member as claimed in one or more of the preceding claims, characterised in that at least the reflective layer (40) or the entire barrier film (25) has a zigzag or wave-shaped cross section.
36. Hollow section member as claimed in one or more of the preceding claims, characterised in that at least one of the surfaces (35, 64) of the barrier film (25) is deformed, in particular is provided with indentations (74).
37. Hollow section member as claimed in one or more of the preceding claims, characterised in that a width (68) of the barrier film (25) in a position parallel with the longitudinal side wall (7, 8) corresponds at least approximately to a dimension (63) of the chamber (20, 22) in the same direction.
38. Hollow section member as claimed in one or more of the preceding claims, characterised in that in at least one chamber (20, 22) of the hollow section member (1), at least two oppositely lying surfaces (61) bounding the latter are provided respectively with at least two retaining webs (62) directly adjacent to one another on the hollow section member (1), which are aligned parallel with the longitudinal side walls (7, 8) forming a visible surface (9, 10).
39. Hollow section member as claimed in claim 38, characterised in that the mutually opposite retaining webs (62) extend in a position parallel with the longitudinal side wall (7, 8), at least across a part of the dimension (63) of the chamber (20, 22).
40. Hollow section member as claimed in claim 38 or 39, characterised in that the immediately adjacent retaining webs (62) engage at least in certain regions respectively around the surfaces (35, 64) of the barrier film (25), starting from the longitudinal side edges (29, 30) thereof.
41. Hollow section member as claimed in one of claims 38 to 40, characterised in that mutually facing retaining surfaces (65, 66) of the retaining webs (62) sit against the surfaces (35, 64) of the barrier film (25).
42. Hollow section member as claimed in claim 41, characterised in that the retaining surfaces (65, 66) of the retaining webs (62) are joined to the surfaces (35, 64) of the barrier film (25), at least in certain regions, and/or are formed onto the latter.
43. Hollow section member as claimed in one of claims 38 to 42, characterised in that cross-webs (70) are disposed between and link respective mutually facing retaining surfaces (65, 66) of the retaining webs (62) and extend through the orifices (69) in the barrier film (25).
44. Hollow section member as claimed in one or more of the claims 38 to 43, characterised in that the barrier film (25) is covered by the retaining webs (62) at least in the region of one of the surfaces (35, 64).
45. Hollow section member as claimed in one or more of the preceding claims, characterised in that a penetration depth (32) of a longitudinal side edge (29, 30) is shorter than a wall thickness (31) of the supporting webs (18, 19) and the external walls (2, 5).
46. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) extends through several mutually adjoining chambers (20, 22).
47. Hollow section member as claimed in one or more of the preceding claims, characterised in that the barrier film (25) has orifices (34) in the region with crossing supporting webs (18, 19).
48. Hollow section member as claimed in one or more of the preceding claims, characterised in that a reinforcing section (23) is provided in the central chamber (21) of the hollow section member (1).

Images