DE102015007885A1 - Method for producing a composite component for a vehicle, in particular a motor vehicle, and composite component for a vehicle - Google Patents

Abstract

The invention relates to a method for producing a composite component for a vehicle, in which at least one cover layer (12) is arranged on a core layer (10) of a thermoplastic foam and bonded to the core layer (10), wherein between the core layer (10) and the cover layer (12) at least one electrical heating element (24) is arranged, as well as such a composite component.

Description

The invention relates to a method for producing a composite component for a vehicle, in particular a motor vehicle, according to the preamble of patent claim 1 and a composite component for a vehicle, in particular a motor vehicle, according to the preamble of patent claim 10.

Such a composite component for a vehicle, in particular a motor vehicle, and a method for producing such a composite component, for example, already from the DE 10 2006 058 257 A1 to be known as known. The composite component has a core layer of a thermoplastic foam and at least one cover layer, which is arranged on the core layer and connected to the cover layer. In the context of the method, the cover layer is thus arranged on the core layer and connected to the core layer. The core layer and the at least one cover layer thus form a layer composite which, for example, can be heated and pressed in a heated state and / or transformed.

Such composite components are used for example as interior trim parts for vehicles. Such an interior trim part usually has a visible side with a surface which faces the interior of the respective vehicle and can be visually and haptically perceived by occupants. Therefore, a high quality of the surface is desirable.

Object of the present invention is therefore to provide a method and a composite component of the type mentioned, by means of which can be implemented a particularly high surface quality of the composite component and a particularly high level of comfort for vehicle occupants.

This object is achieved by a method having the features of claim 1 and by a composite component having the features of claim 10. Advantageous embodiments with expedient developments of the invention are specified in the remaining claims.

In order to provide a method of the aforementioned type, by means of which a particularly high surface quality of the composite component and a particularly high level of comfort for vehicle occupants can be realized, it is provided according to the invention that at least one electrical heating element is arranged between the core layer and the cover layer. By means of the electric heating element, at least one surface of the composite component itself can be heated, so that the composite component or the surface has a pleasant temperature even at low outside temperatures. In this way, a particularly high haptic comfort of the composite component used, for example, as interior trim part can be realized. Furthermore, a particularly efficient, effective and comfortable heating of the interior of the vehicle can be realized by means of the composite component, as can be realized by the composite component, for example, a surface heating or a Flächenheizelement. If the composite component is used as an interior trim part, then the occupants of the vehicle are usually in close proximity to the interior trim part, so that the occupants emitted from the composite component and provided by the electric heating element heat very quickly, that is a very short time after activation of the electric heating element pleasant way to perceive.

The core layer and the at least one cover layer form a laminate in which the electrical heating element is integrated. As a result of this integration, a particularly high surface quality of the composite component can be realized, since unwanted marks caused by the electrical heating element can be avoided on the surface of the composite component. The invention is in particular also based on the finding that in heating systems which comprise, for example, a carrier, a heating element arranged on the carrier and a decorative layer arranged on the carrier for laminating the heating element, markings on a surface of the decorative layer caused by the heating element occur can. These signals can be visually perceived by occupants of the vehicle, since the signs are on a so-called, visually perceivable by occupants of the vehicle visible side of the heating system. In order to avoid such subscriptions or to keep it particularly low, a complex and thus costly laminating process is required. In addition, the decorative layer and thus the laminating material for laminating the heating element must compensate for the unevenness caused by the heating elements, so that a high material usage is required. This leads to a high weight and high costs of the heating system.

These problems can be avoided by the described integration of the electric heating element in the layer composite, so that the composite component can be formed cost and weight favorable while achieving a high level of comfort.

Another advantage of the method according to the invention is that the thermoplastic Plastic foam of the core layer has a particularly good insulation effect, since the thermoplastic resin foam has a low thermal conductivity. As a result, it is possible, for example, to particularly efficiently heat the visible side facing the interior in the finished manufactured state of the vehicle and visually perceptible by occupants of the vehicle, since the core layer is preferably arranged on a side of the electric heating element facing away from the visible side. Excessive heat losses in the direction of the side facing away from the visible side of the composite component can thus be avoided by means of the core layer, so that, for example, the visual side perceivable visually and haptically by the occupants can be heated in an energy-efficient manner and thus can have a sufficient temperature. Unnecessary, undesired heating of a rear side of the composite component facing away from the visible side and the core layer can be avoided since this rear side is thermally insulated from the visible side by means of the core layer.

Moreover, it is possible to arrange the electric heating element particularly close to the cover layer and in particular on the visible side, so that the visible side can be heated particularly energy efficient. Furthermore, a back-molding of the heating element formed, for example, as an electrical resistance heating element, in particular an electrically conductive wire, can likewise be avoided. With such a back injection, there is usually the risk of the heating element being marked on the surface or the visible side, which can be avoided by means of the method according to the invention, however. Furthermore, an excessive thickness of the electric heating element laminating cover layer can be avoided, so that the weight and the cost of the composite component can be kept low.

Preferably, the heating element operates on the basis of an electrical resistance heater. In other words, the heating element can be designed as a resistance heating element, in particular as an electrically conductive wire. Alternatively, it is conceivable that the heating element is designed as a Peltier element. Thus, a pleasant contact with the composite component, in particular its visible side, can be ensured even with hot outside and inside temperatures.

Preferably, the electrical heating element is arranged close to the core layer, so that the electrical heating element can be embedded at least partially, in particular at least predominantly or completely, into the core layer, whereby unwanted markings of contours of the heating element on the surface or visible side of the composite component can be avoided.

It has proven to be particularly advantageous if the electrical heating element arranged on a carrier element, in particular a film, a grid, a net, a textile, is arranged with the carrier element between the cover layer and the core layer. Preferably, a surface element, that is to say a carrier having an at least substantially flat extent, is used as the carrier element. This allows a particularly simple production and an effective and efficient heating can be realized. In this case, the electric heating element is provided in addition to the carrier element, in particular the Foli and connected to the carrier element, wherein the carrier element, for example, by embroidering and / or Middle connected to the heating element, in particular embroidered with the heating element and / or sewn. The carrier element and the heating element in this case form an at least substantially planar component unit, which is introduced as an additional layer between the core layer and the cover layer. In this embroidery or sewing, for example, the electric heating element itself is a yarn or a fiber which is embroidered or sewn into the carrier element.

In order to keep the number of parts and the weight particularly low, it is provided in a further embodiment of the invention that is used as the electric heating element, an electrically conductive film. In other words, the heating element may be an electrically conductive foil which, for example, does not necessarily have to be in the vicinity of the core layer.

A further embodiment is characterized in that by means of the carrier element, in particular the film, at least one bonding layer is formed, by means of which the covering layer is bonded to the core layer. If, for example, during the production of the composite component, the layer composite comprising the core layer and the cover layer is heated with the support element arranged between the core layer and the cover layer, thereby producing a semifinished product or a finished component, for example from the layer composite, the support element and the electrical heating element the carrier element is at least partially melted or fused by this heating. As a result, the carrier element forms the binding layer, which, for example, bonds to the cover layer and the core layer in a materially and / or form-locking manner. As a result, the cover layer is connected to the core layer through the intermediary of the bonding layer or of the molten support element. Further, for example, by the melting or melting of the carrier element is preferably a form-fitting Connection of the heating element with the carrier element or the binding layer, since the heating element is embedded, for example, in the molten or fused carrier element. As a result, the electrical heating element is also connected to the core layer and the cover layer by means of the carrier element or the bonding layer. In order to realize the positive connection, for example, the molten carrier element formed, for example, from a plastic, mechanically clings to the core layer and / or the bonding layer and / or the heating element.

The thermoplastic resin foam of the core layer may, for example, be open-pored at least in its edge region, so that the melted-on carrier element or its plastic can mechanically dig into the open pores of the core layer. As a result of the melting of the carrier element, this forms, for example, a melt layer or a reactive adhesive or a layer of reactive adhesive, which is activated by the heating.

In a further advantageous embodiment of the invention, at least one bonding layer provided in addition to the carrier element and the core layer is arranged between the carrier element and the core layer, via which the carrier element is connected to the core layer. Alternatively or additionally, it is conceivable for at least one bonding layer, which is provided in addition to the carrier element and the cover layer, to be arranged between the carrier element and the cover layer and via which the carrier element is connected to the cover layer.

This means that the respective bonding layer in these embodiments is not formed by the carrier element itself but by material provided in addition to the carrier element, the core layer and the cover layer, so that the carrier element and via this the electrical heating element via respective, additional bonding layers in the layer composite can be introduced and connected to the layer composite. This respective additional bonding layer is, for example, a melt layer or a layer of reactive adhesive which is activated by heating.

In a particularly advantageous embodiment of the invention, the carrier element has passage openings for at least one additional layer provided in addition to the carrier element, via which the cover layer is connected to the core layer by tying the carrier element to the cover layer and the core layer. These passage openings are formed for example by a perforation of the carrier element, in particular the film. The bonding layer in this embodiment is formed for example by a plastic of the cover layer and / or by a plastic of the core layer or in addition to the support element, the core layer and the cover layer. When the layer composite and the carrier element are heated, the binding layer, which comprises, for example, a thermoplastic material, is melted so that the melted binding layer can penetrate through the through openings of the carrier element. Furthermore, the molten bonding layer can connect to the core layer and / or cover layer in a material-tight and / or form-fitting manner. Since the molten bonding layer penetrates through the through openings of the carrier element, the bonding layer is in particular positively connected to the carrier element after its solidification, so that the carrier element and via this the heating element are, for example, positively connected to the binding layer and via this with the cover layer and the core layer.

The heating element has a rounded, for example circular contour or has a circular cross-section. In particular, it is provided that the heating element has a small cross section to its length. The heating element is for example, in particular in the form of a wire, a stranded wire or the like, mounted on the carrier element in turns. Preferably, the carrier element is made of a plastic, in particular a thermoplastic.

To realize a particularly high surface quality while simultaneously achieving a particularly low weight of the composite component, it is provided in a further embodiment of the invention that the cover layer is formed from a fiber-reinforced plastic, in particular thermoplastic, wherein the thermoplastic is preferably polypropylene (PP ). This means that the cover layer comprises the plastic as matrix or matrix material as well as reinforcing fibers which are embedded in the matrix material. The reinforcing fibers are, for example, glass fibers and / or aramid fibers and / or carbon fibers or carbon fibers and / or natural fibers.

Finally, it has proved to be particularly advantageous if the thermoplastic resin foam is formed from polyethylene terephthalate (PET). As a result, a particularly good insulation effect and thus a high level of comfort can be realized.

Preferably, a thermoplastic is used as the plastic of the cover layer, which may in particular be polypropylene (PP). Furthermore, it has been found to be particularly advantageous if the thermoplastic resin foam is formed from polyethylene terephthalate (PET), so that the core layer is formed as a PET foam core. PET is in a softened state at temperatures above 140 ° C and can thus be plastically deformed. Only when reaching the melting point above 250 ° C, the melting begins. While PP already melts at 160 ° C. This combination of materials is thus particularly advantageous because between 160 ° C and 250 ° C, the thermoplastic of the cover layer is melted and the core is plastically deformable, without that the foam structure is destroyed. This results in a large possible temperature range for the manufacturing process. Due to the foam structure, a particularly good insulation effect and thus a high level of comfort can be realized

Preferably, the layer composite and the electrical heating element as well as the optionally provided support element are introduced as semifinished product into a tool, in particular a pressing tool. Before and / or during the introduction, the semifinished product is preferably heated, so that, for example, the layer composite is connected to one another and to the electrical heating element or the carrier element. For example, when the semifinished product is produced, the layers arranged on one another undergo a first heating, wherein the bonding layer and the covering layer, for example, melt, so that these layers enter into a close, in particular a materially and / or form-locking, connection.

The connection type with the core layer is, for example, form-fitting, since the molten and thus liquid bonding layer can penetrate into the open pores of the core layer and settle there anchoring. The connection between the bonding layer and the cover layer is, for example, firmly bonded by mixing of respective molten plastics of the bonding layer and the cover layer, wherein these plastics are preferably thermoplastics. Furthermore, a positive connection between the bonding layer and the cover layer is conceivable, since, for example, fractions of the bonding layer penetrate into the fiber structure of the cover layer and become anchored therewith.

It is also conceivable that the heating element is designed as a printed on the core layer or the binder layer or printed circuit trace. This variant as well as the configuration as a wire or yarn or fiber can advantageously be laid or arranged so that exactly the points of the composite component, which are touched by an occupant, are recorded tempering, while other areas of the composite component do not temper or remain cold.

In order to provide a composite component of the aforementioned type, by means of which a particularly high surface quality and a particularly high comfort can be realized, it is inventively provided that between the core layer and the cover layer at least one electric heating element is arranged. Advantageous embodiments of the method according to the invention are to be regarded as advantageous embodiments of the composite component according to the invention and vice versa.

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings; these show in:

1 a schematic sectional view through a composite component for a vehicle, having a core layer of a thermoplastic foam, with at least one cover layer, which is disposed on the core layer and connected to the core layer, wherein between the core layer and the cover layer at least one electric heating element is arranged;

2 a schematic plan view of the formed as an electrically conductive wire heating element, which is arranged on a foil, which is arranged together with the electric heating element between the core layer and the cover layer;

3 a schematic view of a method for producing the composite component; and

4 a further schematic sectional view through the composite component.

In the figures, the same or functionally identical elements are provided with the same reference numerals.

1 shows a schematic sectional view of a composite component for a vehicle, in particular a motor vehicle such as a passenger car. The composite component comprises a core layer 10 from a thermoplastic foam, which is preferably formed from polyethylene terephthalate (PET). Furthermore, the composite component comprises a first cover layer 12 , which is formed of a fiber-reinforced plastic. The core layer 10 and the topcoat 12 form a layer composite, which also has one on one of the first cover layer 12 opposite side arranged, second cover layer 14 as well as one optional decorative layer 16 includes. The decorative layer 16 is on one of the core layer 10 opposite side of the first cover layer 12 arranged. The respective cover layer 12 respectively 14 is formed of a fiber-reinforced plastic, wherein the plastic of the respective fiber-reinforced cover layer 12 respectively 14 a thermoplastic, in particular polypropylene (PP), is. The respective cover layer 12 respectively 14 thus includes the plastic and reinforcing fibers, which are embedded in the plastic. The plastic of the cover layer 12 respectively 14 is thus a matrix or a matrix material, wherein the reinforcing fibers may be carbon and / or aramid and / or glass and / or natural and / or synthetic fibers. In other words, the respective cover layer 12 respectively 14 as a fiber-reinforced sheet, preferably formed with a thermoplastic matrix.

Out 1 it can be seen that the respective cover layer 12 respectively 14 as well as the decorative layer 16 on the core layer 10 arranged and with the core layer 10 are connected. The composite component is used, for example, as an interior trim part and has a visible side 18 with a surface 20 on, which faces the interior of the vehicle in the ready-made state of the vehicle and consequently optically and haptically perceptible by occupants residing in the interior.

In order to realize a particularly high surface quality of the composite component and a particularly high level of comfort, is between the core layer 10 and at least one of the cover layers 12 and 14 , in the present case between the core layer 10 and the first cover layer 12 , a heating layer 22 arranged, which - as in conjunction with 2 recognizable - at least one electric heating element 24 includes. The heating element 24 or the heating layer 22 is present on a near the interior or the interior facing side of the core layer 10 arranged so that the heating layer 22 against a the interior and thus the visible side 18 opposite rear side 25 of the composite component through the core layer 10 is thermally and electrically isolated, for example. In other words, it becomes the visible side 18 opposite rear side 25 of the layer composite or of the composite component to form a thermal and electrical insulating layer.

Between the core layer 10 and the topcoat 14 is a binding layer 26 arranged, by means of which the cover layer 14 with the core layer 10 connected is. In addition, between the heating layer 22 and the first cover layer 12 a tie layer 28 and between the heating layer 22 and the core layer 10 a tie layer 30 arranged, with the heating layer 22 about the binding layer 28 with the topcoat 12 and about the tie layer 30 with the core layer 10 connected is. Overall, it can be seen that thus the top layer 12 about the tie layers 28 and 30 with the core layer 10 connected is.

The respective binding layer 26 . 28 respectively 30 is formed for example by a film of a plastic, in particular a thermoplastic. For example, the tie layers become 28 and 30 through an in 2 With 32 designated film of the heating layer 22 educated.

As part of the production of the composite component is the film from which the bonding layer 26 is formed, between the core layer 10 and the topcoat 14 arranged, with the film 32 or the heating layer 22 in total between the cover layer 12 and the core layer 10 is arranged. The the core layer 10 , the top layers 12 and 14 and the decorative layer 16 Comprehensive layer composite, together with the films, forms a layer system which is heated, for example. By this heating, the respective film or the respective thermoplastic of the film is on or melted. As a result, for example, the electric heating element 24 in the plastic of the film 32 embedded, so that the electric heating element 24 with the plastic of the film 32 is positively connected. Furthermore, the plastic of the film 32 or the binding layer 26 forming plastic material and / or form-fitting with the core layer 10 connect. The positive connection takes place, for example, such that the core layer 10 is open-pored and accordingly has open pores, in which the plastic of the respective film can fix mechanically entangled. The heating element 24 is for example made of a metallic material, in particular copper.

Further, the respective film is, for example, material and / or form-fitting with the respective plastic of the outer layers 12 and 14 connected. By heating the layer system, for example, the respective plastic of the respective cover layer 12 and 14 melted or fused, so that the respective molten or molten plastic of the respective film with the respective plastic of the respective cover layer 12 respectively 14 can mix or connect. Further, a positive connection between the respective film or the respective plastic of the respective film and the respective cover layer 12 respectively 14 conceivable, since, for example, the molten plastic of the respective film in the respective fiber structure of the respective cover layer 12 respectively 14 can penetrate. As a result, the molten plastic of the respective film can get caught with the respective reinforcing fibers.

Alternatively, it is conceivable that, for example, the film 32 is not melted, so to connect the heating layer 22 to the topcoat 12 and the core layer 10 at least one in addition to the film 32 , in addition to the topcoat 12 and in addition to the core layer 10 provided and in particular formed by a film binding layer is used. Such an additional bonding layer, formed in particular by a film, becomes, for example, between the heating layer 22 and the topcoat 12 and / or between the heating layer 22 and the core layer 10 arranged. In this case, preferably, the film 32 Through openings, so that the melted by the heating, additional film or bonding layer can penetrate these through holes. As a result, the heating layer 22 , especially the film 32 , Formally connected to the additional bonding layer or film, wherein the through holes of the film 32 penetrating, additional bonding layer or film on the one hand with the cover layer 12 and, on the other hand, with the core layer 10 in particular can be connected in the manner described. Instead of the foil 32 as a carrier material are more planar structures such. As networks, grids or textiles possible, which in part by the connection of the core layer 10 and topcoat 12 be penetrated and thus very easily integrated into the system

By the in 1 shown construction, in particular material structure, can be a particularly light, cost-effective and energy-efficient surface heating in the interior realize. Effects such as signatures of the preferably designed as an electrically conductive heating wire heating element 24 on the surface 20 do not have to be compensated costly, because - how very good 4 is recognizable - the heating wire very well in the core layer 10 embedded and over the cover layers 12 and 14 can be protected. Overall, a sandwich construction or sandwich composite is created, which is the core layer 10 contains as a thermoplastic foam core. Due to this thermoplastic foam core contained in the sandwich composite is no separate insulation of the back 25 required because the heating layer 22 through the core layer 10 which is between the heating layer 22 and the topcoat 14 is arranged, opposite the back 25 is already particularly well thermally isolated.

Out 2 It can be seen that the heating element designed as a heating wire 24 for example, at least substantially meandering and on the film 32 arranged and with the foil 32 connected is. The foil 32 is thus an at least substantially planar carrier element, on which the heating element 24 is held. Preferably, the heating element 24 with the foil 32 sutured. Alternatively, it is conceivable that the film 32 with the heating element 24 is embroidered. For this purpose, an additionally provided yarn 34 are used, by means of which the heating element 24 on the slide 32 is attached. Alternatively, it is conceivable that the heating element 24 itself is used as a yarn or as a fiber, or in the film 32 sewn or embroidered.

The thermoplastic foam of the core layer 10 has a very low thermal conductivity, which makes the heating layer 22 from the topcoat 14 is thermally insulated. Will the heating layer 22 or the heating element 24 activated by an electric current through the electric heating element 24 flows, so does the surface 20 energy efficient heated while the back 25 in comparison to the surface 20 remains cold or has a lower temperature.

Preferably, the heating layer 22 a plurality of electric heating elements to realize an effective heating. The present case designed as an electrically conductive wire or heating wire heating element 24 in the present case is a resistance heating element, by means of which the surface 20 and in particular the interior can be heated efficiently.

Due to the sandwich construction, undesirable marks can be made on the visible side 18 avoid. The thermoplastic and formed from plastic foam core layer 10 resembles - as in 4 recognizable - the volume of the heating element 24 out, so that marks of the heating element 24 on the surface 20 can be avoided. This can be a thick and expensive lamination of the surface 20 be avoided, so that a sandwich composite can be realized with a particularly low basis weight. An additional decorative layer is not required, so that the space requirement, the cost and weight of the composite component can be kept low.

Furthermore, a particularly simple and off 3 recognizable production of the composite component can be realized. The composite component can be produced in one step, wherein a subsequent application of a decorative layer and an insulating layer can be avoided.

Out 3 It can be seen that, for example, in a first step S1, the cover layers 12 and 14 , the binding layer 26 or the film for producing the binding layer 26 and the in this case, the film 32 and the heating element 24 comprehensive heating layer 22 on the core layer 10 be applied. This is the heating layer 22 between the cover layer 12 and the core layer 10 arranged, wherein the film of the binding layer 26 between the cover layer 14 and the core layer 10 is arranged. In this case, respective semi-finished products are provided for example in the form of endless material. The semi-finished products form the aforementioned layer system and are produced by means of a tool 36 made-up and especially tailored.

The said layer system is first as a semi-finished product in a tool 38 introduced at a second step S2. The tool 38 is a heating furnace, by means of which the semifinished product is heated in the form of the layer system. As a result, the semi-finished products or layer system are interconnected in the manner described above. By heating the semi-finished products or the layer system in the heating furnace in particular the outer layers 12 and 14 or converted their plastic or thermoplastic in a plastic state.

In a third step S3, the layer system by means of a tool 40 pressed and reshaped, wherein this pressing and forming takes place in a heated state. The heating of the layer system takes place here by means of the addition to the tool 40 provided heating oven before the coating system in the tool 40 is introduced. Alternatively or additionally, it is conceivable to use said semifinished product before and / or during the forming and pressing or by means of the tool 40 to heat, by means of which also the compression and the forming done.

Hinges of the heating element 24 Do not occur when using the sandwich composite. The core layer 10 is plastically deformed during processing without damaging the mechanical properties, since the layer system is heated and pressed or formed in a heated state. This allows the heating element 24 at least partially in the core layer 10 embedded, without causing undesirable destruction of cell walls of the plastic foam. This allows the core layer 10 the additional volume of the heating wire (heating element 24 ). This results in no significant differences in the compression and thus different consolidations of the outer layers 12 and 14 that would be visible on the respective surface. It is also at higher temperatures in the composite component that occur when the heating element 24 is activated, no signs of the heating element 24 visible, noticeable.

Due to the sandwich construction with integrated heating element 24 In integrated construction, surface heating in one component can be realized. In addition, no additional insulation of the surface heating is necessary because the core layer 10 the backside 25 isolated. Due to the flat surface of the composite component, a thin lamination is sufficient, which, for example, by the decorative layer 16 realized and in a one-step process, that is, in the context of a so-called one-shot process, can be applied.

Out 3 it can be seen that the decorative layer 16 is introduced before the forming, in particular before heating, the layer system and thus may already be part of the layer system. Furthermore, it is conceivable, the decorative layer 16 apply before forming and after heating to the layer system. Furthermore, it is conceivable to trim said semi-finished product already during the forming process.

Due to the fact that only a very small thickness of the decorative layer 16 is feasible, is the heating element 24 very close to the surface to be heated 20 so that a particularly high efficiency of the formed as a surface heating composite component can be realized. The decorative layer forming a decor 16 can be applied in one step, eliminating additional process steps.

The integral construction, which is made possible by the sandwich construction, means that the composite component does not have to be subsequently laminated. The application of decor, which is realized during the forming, is sufficient. Nevertheless, a subsequent lamination is possible. However, the thickness of this lamination can be kept very low. Furthermore, a particularly low basis weight and thus a particularly low weight of the composite component can be realized overall.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102006058257 A1 [0002]

Claims (10)

Method for producing a composite component for a vehicle, in which at least one cover layer ( 12 ) on a core layer ( 10 ) made of a thermoplastic foam and with the core layer ( 10 ), characterized in that between the core layer ( 10 ) and the cover layer ( 12 ) at least one electrical heating element ( 24 ) is arranged. A method according to claim 1, characterized in that on a support element, in particular a film ( 32 ), a grid, a net, a textile, arranged, electric heating element ( 24 ) with the carrier element between the cover layer ( 12 ) and the core layer ( 10 ) is arranged. Method according to claim 1, characterized in that as the electric heating element ( 24 ) an electrically conductive foil or a wire, a fiber or a strand is used. A method according to claim 2 or 3, characterized in that by means of the carrier element, in particular the film ( 32 ), at least one tie layer ( 28 . 30 ) is formed, by means of which the cover layer ( 12 ) with the core layer ( 10 ) is connected. Method according to claim 2 or 3, characterized in that between the carrier element, in particular the film ( 32 ), and the core layer ( 10 ) at least one in addition to the carrier element and the core layer ( 10 ) provided binding layer ( 30 ) is arranged, via which the carrier element with the core layer ( 10 ) is connected. Method according to claim 2 or 3 or 5, characterized in that between the carrier element, in particular the film ( 32 ), and the top layer ( 12 ) at least one in addition to the carrier element and the cover layer ( 12 ) provided binding layer ( 28 ) is arranged, via which the carrier element with the cover layer ( 12 ) is connected. A method according to claim 2 or 3 or 5 or 6, characterized in that the carrier element, in particular the film ( 32 ), Passage openings for at least one in addition to the carrier element ( 32 ), the core layer ( 10 ) and the cover layer ( 12 ) provided binding layer ( 28 . 30 ), over which the cover layer ( 12 ) while tying the carrier element to the cover layer ( 12 ) and the core layer ( 10 ) with the core layer ( 10 ) is connected. Method according to one of the preceding claims, characterized in that as the cover layer ( 12 ) a cover layer ( 12 ) of a fiber-reinforced plastic, in particular thermoplastic and preferably polypropylene, is used. Method according to one of the preceding claims, characterized in that the thermoplastic resin foam is formed from polyethylene terephthalate. Composite component for a vehicle, having a core layer ( 10 ) of a thermoplastic foam, and at least one cover layer ( 12 ), which on the core layer ( 10 ) and with the core layer ( 10 ), characterized in that between the core layer ( 10 ) and the cover layer ( 12 ) at least one electrical heating element ( 24 ) is arranged.

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