EP1667833A1 - Method for producing a composite structure and the thus obtained structure - Google Patents

Method for producing a composite structure and the thus obtained structure

Info

Publication number
EP1667833A1
EP1667833A1 EP04765263A EP04765263A EP1667833A1 EP 1667833 A1 EP1667833 A1 EP 1667833A1 EP 04765263 A EP04765263 A EP 04765263A EP 04765263 A EP04765263 A EP 04765263A EP 1667833 A1 EP1667833 A1 EP 1667833A1
Authority
EP
European Patent Office
Prior art keywords
component
adhesion promoter
metal component
promoter layer
composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04765263A
Other languages
German (de)
French (fr)
Inventor
Holm Riepenhausen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP1667833A1 publication Critical patent/EP1667833A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B29C65/46—Joining a heated non plastics element to a plastics element heated by induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/004—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material the metal being over-moulded by the synthetic material, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7422—Aluminium or alloys of aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7428—Transition metals or their alloys
    • B29C66/74283—Iron or alloys of iron, e.g. steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B29K2305/02—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B29K2305/08—Transition metals
    • B29K2305/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2715/00—Condition, form or state of preformed parts, e.g. inserts
    • B29K2715/006—Glues or adhesives, e.g. hot melts or thermofusible adhesives

Definitions

  • the invention relates to a method for producing a composite component according to the preamble of claim 1. Furthermore, the invention relates to a composite component produced with such a method according to the preamble of claim 3.
  • a generic method and composite components produced with it are known from prior public use.
  • a metal component coated with adhesive lacquer is connected in a continuous process by coextrusion with a plastic component.
  • the metal component which is in the form of a film, is preheated in the known method, so that the adhesion promoter layer is activated during the injection molding and creates a connection between the metal component and the molded plastic component.
  • Activation of the bonding agent requires that a certain temperature, which is dependent on the particular bonding agent used, is exceeded. If this temperature is not reached, there is an insufficient connection between the two components of the composite component.
  • the connection via an adhesion promoter layer was therefore previously reserved for a few special areas of application.
  • a composite component is also known from DE 38 39 855 C2, in which reinforcing ribs made of molded plastic are connected to a base made of metal via openings in this base through which the plastic is injected. Such a connection does not have optimal strength. As an alternative, it is known to also achieve a positive connection by means of appropriate sealing of the metal component. Such positive connections always have an insufficient bond strength.
  • This object is achieved according to the invention by a production method with the features specified in the characterizing part of claim 1.
  • metal components can also be heated sufficiently to activate the adhesion promoter layer, for which this was previously not possible before or during the injection molding step.
  • thicker metal components which previously could not be heated sufficiently to activate the adhesion promoter on the side facing the plastic component during injection molding, since the heat immediately flowed into the interior of the metal.
  • sufficient heat is subsequently added until a thicker metal component near the adhesion promoter layer is also heated so that the latter is activated. Since the method according to the invention is independent of the process control during injection molding, it can be carried out after a continuous or a discontinuous injection molding process.
  • Inductive heating according to claim 2 is particularly elegant.
  • the metal component does not have to be specially prepared for this.
  • Bulky composite components can also be produced in this way by activating the bonding agent layer without major equipment problems.
  • Another object of the present invention is to develop a composite component of the type mentioned in the introduction in such a way that a load-bearing connection between the metal and the plastic component can be produced with little effort.
  • An activatable adhesion promoter layer can be applied in advance of any necessary deformation of the metal component or in the run-up to the production of the composite component, which simplifies production.
  • a connection of the metal component to the plastic component via a positive connection is not absolutely necessary, so that, for example, an undercut-free configuration of the connecting wall between the metal component and the plastic component is possible.
  • the adhesion promoter layer ensures a secure material connection between the metal component and the plastic component.
  • the metal component and the plastic component can in particular be designed in such a way that the contact surface of the adhesion promoter layer extends over the connecting wall to the greatest possible extent up to a complete coverage of the metal component. This reduces the requirements for the adhesion promoter layer in order to achieve a predetermined material bond.
  • the metal component can be provided on one or both sides with the adhesive layer.
  • the adhesion promoter layer can be applied over the entire surface of the metal component according to claim 4 or alternatively only where adhesion is desired. Adhesion-free areas can be created in a targeted manner.
  • connection structure can be designed, for example, as a rib or as a cup. Other connection structures are also possible.
  • a composite component 1 has a sheet metal 2 made of steel or aluminum as the metal component.
  • the sheet metal 2 adheres to a plastic component 4 of the composite component 1 via a continuous connecting wall 3.
  • the plastic component 4 comprises a connecting section 4a arranged parallel to the connecting surface 3 and a reinforcing section 4b perpendicular to it in the form of a rib or a web. Where the connecting section 4a and the reinforcing section 4b abut one another, a stress-relieving rounding 4c is preferably provided.
  • the sheet 2 Perpendicular to the connecting wall 3, the sheet 2 has a thickness that is dimensioned depending on the design of the composite component 1.
  • An adhesive layer 5 is arranged between the sheet 2 and the connecting section 4a of the plastic component 4, via which the sheet 2 and the plastic component 4 adhere to one another.
  • the adhesion promoter layer 5 is also referred to as a primer.
  • connecting section 4a is not continuous, but is designed as a foot section extending to the right and left of the reinforcing section 4b, so that the plastic component of the composite component 1 according to FIG shown area has the cross section of an inverted letter "T".
  • the sheet 2 has a connection structure 6 with a U-shaped cross section, which engages in a complementary connection receptacle 7 of the plastic component 4. Due to the connection structure 6 and the complementary connection receptacle 7, the sheet 2 is also connected to the plastic component 4 in a form-fitting manner.
  • connection structure 6 is designed as a continuous connection rib.
  • connection structure 6 can also be designed, for example, as a connection cup whose cross section corresponds to that of FIG. 3 and which can have a rectangular or round cross section parallel to the bowl bottom.
  • Composite components 1 according to FIGS. 1 to 4 are used, for example, as hollow chamber components in vehicle construction, the plastic component 4 being used to increase the mechanical strength of the metal component, that is to say the sheet metal 2.
  • the buckling stiffness, but also z. B. the torsional strength is hereby improved.
  • Examples of such composite components 1 are metallic U-profiles reinforced with plastic ribs and metal-plastic trim strips. Bulky, larger components, such as. B. front-end modules of motor vehicles, can be produced according to the invention as composite components 1.
  • a manufacturing method for a composite component according to FIGS. 1 to 4 shows the schematic flow diagram of FIG. 5.
  • This manufacturing method is suitable for a sheet 2 made of steel with a thickness that is greater than 0.3 mm, or for a sheet 2 Aluminum with a thickness greater than 0.7 mm. Other sheet thicknesses can also be processed, so that the specified ranges are not a limitation.
  • the sheet 2 is first checked in a control step 11 with regard to its dimensions and material quality. 5, the adhesion promoter layer 5 has already been applied to the sheet 2 before the goods receipt step 10.
  • the sheet 2 is initially stored temporarily in a storage step 12.
  • Plastic raw material for the plastic component 4 runs in parallel through a corresponding goods receipt step 13 as well as a control step 14 and a storage step 15.
  • the sheet 2 is placed in an injection mold and overmolded with the plasticized plastic raw material.
  • the plastic raw material lies against the sheet metal 2 via the connecting wall 3, so that when the composite component 1 is designed according to FIGS. 3 and 4, form-fitting connections are formed.
  • the metal sheet 2 is inserted into the mold of the injection mold in such a way that the adhesion promoter layer 5 faces a free volume in the mold of the injection mold.
  • the sheet 2 is heated in an activation step 17. This heating can take place by means of induction or resistance heating.
  • the activation step 17 can be carried out, for example, in that the injection-molded composite component 1 is guided through an induction coil by means of a removal device of the injection molding tool.
  • the activation step 17 takes place in particular only a short time after the injection molding step 16, so that the sheet 2 is still warm as a result of the injection molding step 16.
  • the energy to be applied in the activation step 17 is thus low. Due to the heating, the adhesion promoter layer 5 is activated, so that a material bond between the sheet metal 2 and the plastic component 4 takes place over the entire connecting wall 3, on which the adhesion promoter layer 5 is present.
  • the composite component 1 produced is checked with regard to its dimensions, its material quality and the resistance of the material connection between the sheet metal 2 and the plastic component 4. After a positive test, the composite component 1 produced is stored in a storage step 19. The quality requirements after the control step 18 composite components 1 are not improved in a post-processing step 20. The success of the postprocessing step 20 is checked in a further control step 21. Only composite components 1 that withstand this test arrive at the storage step 19. The composite components 1 that do not exist in the control step 21 are fed to a reject processing step 22.
  • the height of the temperature of the sheet 2 to be set in the activation step 17 or in the injection molding / activation step 16, 17 for activating the adhesion promoter layer 5 and the duration of the heating for this activation depend on the thickness of the sheet 2 and on the required processing temperature of the plastic component 4.
  • a sheet 2 coated on one side with the adhesion promoter layer 5 is used. If, in an alternative composite component, the sheet 2 is to be arranged between two plastic components connected thereto, a sheet 2 coated on both sides with the adhesion promoter layer is alternatively used.
  • a sheet 2 already coated with the adhesion promoter layer 5 is processed further.
  • the adhesion promoter layer 5 can be applied before or after a step shaping the sheet 2.
  • the coating with the adhesion promoter layer 5 can also be carried out only immediately before the injection molding step 16.
  • adhesion promoter layer 5 in connection with the invention, this also includes adhesion promoter layers which are multilayer (sandwich layer) and which are applied to the sheet metal 2 and consist of at least 2 components.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for producing a composite structure (1) consisting in preparing a metal component (2) provided with an adhesion promoter layer, introducing said metal component (2) into the mould of an injection moulding tool in such away that said adhesion promoter layer (5) is arranged in the opposite position with respect to the free volume of the mould. Afterwards, a plastic component (4) is applied to the metal component (2) by injection moulding. Finally, the metal component (2) is heated in order to activate the adhesion promoter layer (5) after injection moulding, thereby obtaining the composite structure (1) whose components (2, 4) are reliably jointed to each other.

Description

Verfahren zur Herstellung eines Verbundbauteils sowie hiermit hergestelltes Verbundbauteil Method for producing a composite component and composite component produced therewith
Die Erfindung betrifft ein Verfahren zur Herstellung eines Verbundbauteils nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung ein mit einem derartigen Verfahren hergestelltes Verbundbauteil nach dem Oberbegriff des Anspruchs 3. Ein gattungsgemäßes Verfahren sowie hiermit hergestellte Verbundbauteile sind durch offenkundige Vorbenutzung bekannt. Dabei wird eine haftlackbeschichtete Metallkomponente in einem kontinuierlichen Prozess durch Koextrusion mit einer Kunststoffkomponente verbunden. Die Metallkomponente, die hierbei in Folienform vorliegt, wird bei dem bekannten Verfahren vorgeheizt, sodass die Haftvermittler- schicht während des Spritzgießens aktiviert wird und eine Verbindung der Metallkomponente mit der angespritzten Kunststoffkomponente schafft. Eine Aktivierung des Haftvermittlers erfordert die Überschreitung einer bestimmten, vom jeweils eingesetzten Haftvermittler abhängigen Temperatur. Wird diese Temperatur nicht erreicht, so resultiert eine unzureichende Verbindung zwischen den beiden Kompo- nenten des Verbundbauteils. Die Verbindung über eine Haftvermittlerschicht war daher bislang wenigen speziellen Anwendungsgebieten vorbehalten.The invention relates to a method for producing a composite component according to the preamble of claim 1. Furthermore, the invention relates to a composite component produced with such a method according to the preamble of claim 3. A generic method and composite components produced with it are known from prior public use. Here, a metal component coated with adhesive lacquer is connected in a continuous process by coextrusion with a plastic component. The metal component, which is in the form of a film, is preheated in the known method, so that the adhesion promoter layer is activated during the injection molding and creates a connection between the metal component and the molded plastic component. Activation of the bonding agent requires that a certain temperature, which is dependent on the particular bonding agent used, is exceeded. If this temperature is not reached, there is an insufficient connection between the two components of the composite component. The connection via an adhesion promoter layer was therefore previously reserved for a few special areas of application.
Aus der DE 38 39 855 C2 ist weiterhin ein Verbundbauteil bekannt, bei dem Verstärkungsrippen aus angespritztem Kunststoff an einem Grundkörper aus Metall über Durchbrüche in diesem Grundkörper verbunden sind, durch die der Kunststoff gespritzt ist. Eine derartige Verbindung weist keine optimale Festigkeit auf. Alternativ ist es bekannt, eine formschlüssige Verbindung auch über eine entsprechende Versi- ckung der Metallkomponente zu erreichen. Derartige formschlüssige Verbindungen weisen stets eine unzureichende Verbundfestigkeit auf.A composite component is also known from DE 38 39 855 C2, in which reinforcing ribs made of molded plastic are connected to a base made of metal via openings in this base through which the plastic is injected. Such a connection does not have optimal strength. As an alternative, it is known to also achieve a positive connection by means of appropriate sealing of the metal component. Such positive connections always have an insufficient bond strength.
Es ist eine Aufgabe der vorliegenden Erfindung, ein Verfahren zur Herstellung eines Verbundbauteils der eingangs genannten Art derart weiterzubilden, dass über die Haftvermittlerschicht regelmäßig eine sichere Verbindung zwischen den Komponenten des Verbundbauteils geschaffen ist. Diese Aufgabe ist erfindungsgemäß gelöst durch ein Herstellungsverfahren mit den im Kennzeichnungsteil des Anspruchs 1 angegebenen Merkmalen.It is an object of the present invention to develop a method for producing a composite component of the type mentioned at the outset in such a way that a secure connection between the components of the composite component is regularly created via the adhesion promoter layer. This object is achieved according to the invention by a production method with the features specified in the characterizing part of claim 1.
Beim erfindungsgemäßen Verfahren lassen sich auch Metallkomponenten ausrei- chend zur Aktivierung der Haftvermittlerschicht erwärmen, bei denen dies bislang vor oder während dem Sphtzgussschritt nicht möglich war. Insbesondere lassen sich auch dickere Metallkomponenten einsetzen, die bisher während des Spritzgießens an der der Kunststoffkomponente zugewandten Seite nicht ausreichend zur Haftvermittleraktivierung erwärmt werden konnten, da die Wärme sofort ins Innere des Me- talls abfloss. Erfindungsgemäß wird nachträglich soviel Wärme zugeführt, bis auch eine dickere Metallkomponente nahe der Haftvermittlerschicht so erwärmt ist, dass letztere aktiviert wird. Da das erfindungsgemäße Verfahren unabhängig von der Prozessführung beim Spritzgießen ist, kann es im Anschluss an ein kontinuierliches oder auch an ein diskontinuierliches Spritzgussverfahren durchgeführt werden. Da beim diskontinuierlichen Spritzgießen die Metallkomponente in der Regel über die daran anliegende Wandung der Gussform erheblich abgekühlt wird, waren Verbundbauteile, die durch diskontinuierliches Spritzgießen hergestellt wurden, einer Verbindung über eine Haftvermittlerschicht bislang praktisch nicht zugänglich. Auch die Komponenten derartiger Verbundbauteile können nun mit Hilfe einer Haftvermittlerschicht miteinander verbunden werden.In the method according to the invention, metal components can also be heated sufficiently to activate the adhesion promoter layer, for which this was previously not possible before or during the injection molding step. In particular, it is also possible to use thicker metal components which previously could not be heated sufficiently to activate the adhesion promoter on the side facing the plastic component during injection molding, since the heat immediately flowed into the interior of the metal. According to the invention, sufficient heat is subsequently added until a thicker metal component near the adhesion promoter layer is also heated so that the latter is activated. Since the method according to the invention is independent of the process control during injection molding, it can be carried out after a continuous or a discontinuous injection molding process. Since, in discontinuous injection molding, the metal component is generally cooled considerably over the adjacent mold wall, composite components which were produced by discontinuous injection molding have so far been practically inaccessible to a connection via an adhesion promoter layer. The components of such composite components can now also be connected to one another with the aid of an adhesion promoter layer.
Eine induktive Erwärmung nach Anspruch 2 ist besonders elegant. Die Metallkomponente muss hierzu nicht besonders vorbereitet werden. Auch sperrige Verbundbauteile können ohne größere apparative Probleme auf diese Weise durch Aktivie- rung der Haftvermittlerschicht hergestellt werden.Inductive heating according to claim 2 is particularly elegant. The metal component does not have to be specially prepared for this. Bulky composite components can also be produced in this way by activating the bonding agent layer without major equipment problems.
Eine weitere Aufgabe der vorliegenden Erfindung ist es, ein Verbundbauteil der eingangs genannten Art derart weiterzubilden, dass eine belastbare Verbindung zwischen der Metall- und der Kunststoffkomponente mit geringem Aufwand erzeugt werden kann.Another object of the present invention is to develop a composite component of the type mentioned in the introduction in such a way that a load-bearing connection between the metal and the plastic component can be produced with little effort.
Diese Aufgabe ist erfindungsgemäß gelöst durch ein Verbundbauteil mit den im Kennzeichnungsteil des Anspruchs 3 angegebenen Merkmalen. Eine aktivierbare Haftvermittlerschicht kann schon im Vorfeld einer ggf. erforderlichen Unformung der Metallkomponente bzw. im Vorfeld der Fertigung des Verbundbauteils aufgebracht werden, was die Fertigung vereinfacht. Eine Verbindung der Metallkomponente mit der Kunststoffkomponente über Formschluss ist nicht zwin- gend erforderlich, sodass beispielsweise eine hinterschneidungsfreie Ausgestaltung der Verbindungswand zwischen der Metallkomponente und der Kunststoffkomponente möglich ist. Die Haftvermittlerschicht gewährleistet eine sichere stoffschlüssige Verbindung zwischen der Metallkomponente und der Kunststoffkomponente. Die Metallkomponente und die Kunststoffkomponente können insbesondere so ausges- taltet sein, dass die Anlagefläche der Haftvermittlerschicht über die Verbindungswand eine größtmögliche Ausdehnung bis hin zu einer völligen Bedeckung der Metallkomponente aufweist. Dies verringert die Anforderungen an die Haftvermittlerschicht zur Erzielung eines vorgegebenen Stoffschlusses. Je nach Aufbau des Verbundbauteils kann die Metallkomponente einseitig oder auch beidseitig mit der Haft- ermittlerschicht versehen sein.This object is achieved according to the invention by a composite component with the features specified in the characterizing part of claim 3. An activatable adhesion promoter layer can be applied in advance of any necessary deformation of the metal component or in the run-up to the production of the composite component, which simplifies production. A connection of the metal component to the plastic component via a positive connection is not absolutely necessary, so that, for example, an undercut-free configuration of the connecting wall between the metal component and the plastic component is possible. The adhesion promoter layer ensures a secure material connection between the metal component and the plastic component. The metal component and the plastic component can in particular be designed in such a way that the contact surface of the adhesion promoter layer extends over the connecting wall to the greatest possible extent up to a complete coverage of the metal component. This reduces the requirements for the adhesion promoter layer in order to achieve a predetermined material bond. Depending on the structure of the composite component, the metal component can be provided on one or both sides with the adhesive layer.
Die Haftvermittlerschicht kann auf die Metallkomponente gemäß Anspruch 4 vollflächig oder alternativ nur dort aufgebracht sein, wo Haftung erwünscht ist. Es können gezielt haftungsfreie Bereiche erzeugt werden.The adhesion promoter layer can be applied over the entire surface of the metal component according to claim 4 or alternatively only where adhesion is desired. Adhesion-free areas can be created in a targeted manner.
Ein zusätzlicher Formschlussbeitrag gemäß Anspruch 5 senkt die Anforderungen an die Haftvermittlerschicht zur Gewährleistung einer sicheren Verbindung zwischen der Metallkomponente und der Kunststoffkomponente. Die Verbindungsstruktur kann zum Beispiel als Rippe oder als Napf ausgeführt sein. Auch andere Verbindungs- Strukturen sind möglich.An additional positive locking contribution according to claim 5 lowers the requirements for the adhesive layer to ensure a secure connection between the metal component and the plastic component. The connection structure can be designed, for example, as a rib or as a cup. Other connection structures are also possible.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. In this show:
Fig. 1 einen gebrochenen Schnitt durch ein Verbundbauteil;1 shows a broken section through a composite component.
Fig. 2 bis 4 zu Fig. 1 ähnliche Darstellungen weiterer Ausführungen eines Verbundbauteils; und Fig. 5 ein Ablaufdiagramm eines Herstellungsverfahrens für ein Verbundbauteil nach den Fig. 1 bis 4.2 to 4 representations similar to FIG. 1 of further versions of a composite component; and 5 shows a flowchart of a production method for a composite component according to FIGS. 1 to 4.
Ein Verbundbauteil 1 weist als Metallkomponente ein Blech 2 aus Stahl oder Alumi- nium auf. Über eine durchgehende Verbindungswand 3 haftet das Blech 2 an einer Kunststoffkomponente 4 des Verbundbauteils 1. Die Kunststoffkomponente 4 um- fasst einen parallel zur Verbindungsfläche 3 angeordneten Verbindungsabschnitt 4a und einen hierzu senkrecht stehenden Verstärkungsabschnitt 4b in Form einer Rippe bzw. eines Steges. Dort, wo der Verbindungsabschnitt 4a und der Verstärkungsab- schnitt 4b aneinander stoßen, ist vorzugsweise eine spannungsentlastende Verrun- dung 4c vorgesehen. Senkrecht zur Verbindungswand 3 weist das Blech 2 eine Dicke auf, die je nach Ausführung des Verbundbauteils 1 bemessen ist. Zwischen dem Blech 2 und dem Verbindungsabschnitt 4a der Kunststoffkomponente 4 ist eine Haftvermittlerschicht 5 angeordnet, über welche das Blech 2 und die Kunststoffkompo- nente 4 aneinander haften. Die Haftvermittlerschicht 5 wird auch als Primer bezeichnet.A composite component 1 has a sheet metal 2 made of steel or aluminum as the metal component. The sheet metal 2 adheres to a plastic component 4 of the composite component 1 via a continuous connecting wall 3. The plastic component 4 comprises a connecting section 4a arranged parallel to the connecting surface 3 and a reinforcing section 4b perpendicular to it in the form of a rib or a web. Where the connecting section 4a and the reinforcing section 4b abut one another, a stress-relieving rounding 4c is preferably provided. Perpendicular to the connecting wall 3, the sheet 2 has a thickness that is dimensioned depending on the design of the composite component 1. An adhesive layer 5 is arranged between the sheet 2 and the connecting section 4a of the plastic component 4, via which the sheet 2 and the plastic component 4 adhere to one another. The adhesion promoter layer 5 is also referred to as a primer.
In den Fig. 2 bis 4 sind alternative Ausführungen eines Verbundbauteils 1 dargestellt. Komponenten, die denjenigen entsprechen, die unter Bezugnahme auf die Fig. 1 schon erläutert wurden, tragen die gleichen Bezugsziffern und werden nicht nochmals im Einzelnen diskutiert.2 to 4 alternative designs of a composite component 1 are shown. Components which correspond to those which have already been explained with reference to FIG. 1 have the same reference numerals and will not be discussed again in detail.
Die Ausführung nach Fig. 2 unterscheidet sich von denjenigen von Fig. 1 dadurch, dass der Verbindungsabschnitt 4a nicht durchgehend ausgeführt ist, sondern als sich rechts und links des Verstärkungsabschnitts 4b erstreckender Fußabschnitt gestaltet ist, sodass die Kunststoffkomponente des Verbundbauteils 1 nach Fig. 2 im dargestellten Bereich den Querschnitt eines umgekehrten Buchstabens „T" aufweist.2 differs from that of FIG. 1 in that the connecting section 4a is not continuous, but is designed as a foot section extending to the right and left of the reinforcing section 4b, so that the plastic component of the composite component 1 according to FIG shown area has the cross section of an inverted letter "T".
Bei der Ausführung nach Fig. 2, liegt wie bei derjenigen nach Fig. 1 , eine durchge- hende Haftvermittlerschicht 5 vor. Alternativ ist es möglich, die Haftvermittlerschicht nur dort vorzusehen, wo die Kunststoffkomponente 4 über die Verbindungsfläche 3 an dem Blech 2 anliegt. Bei der Ausführung nach Fig. 3 ist zusätzlich zu dem Stoffschluss über die Haftvermittlerschicht 5 der Ausführung nach den Fig. 1 und 2 über einen im Spritzgusspro- zess hergestellten Niet 8 eine formschlüssige Verbindung ausgeführt. Der Niet 8 erstreckt sich hierbei durch eine Durchtrittsöffnung 9 im Blech 2 und ist einstückig mit der Kunststoffkomponente 4 verbunden.In the embodiment according to FIG. 2, as in that according to FIG. 1, there is a continuous adhesion promoter layer 5. Alternatively, it is possible to provide the adhesion promoter layer only where the plastic component 4 lies against the sheet metal 2 via the connecting surface 3. In the embodiment according to FIG. 3, in addition to the material connection via the adhesion promoter layer 5 of the embodiment according to FIGS. 1 and 2, a positive connection is made via a rivet 8 produced in the injection molding process. The rivet 8 extends through a passage opening 9 in the sheet 2 and is integrally connected to the plastic component 4.
Im in Fig. 4 dargestellten Ausschnitt einer weiteren Variante des Verbundbauteils 1 weist das Blech 2 eine im Querschnitt U-förmige Verbindungsstruktur 6 auf, die in eine hierzu komplementäre Verbindungsaufnahme 7 der Kunststoffkomponente 4 eingreift. Aufgrund der Verbindungsstruktur 6 und der hierzu komplementären Verbindungsaufnahme 7 ist das Blech 2 auch formschlüssig mit der Kunststoffkomponente 4 verbunden.In the detail of a further variant of the composite component 1 shown in FIG. 4, the sheet 2 has a connection structure 6 with a U-shaped cross section, which engages in a complementary connection receptacle 7 of the plastic component 4. Due to the connection structure 6 and the complementary connection receptacle 7, the sheet 2 is also connected to the plastic component 4 in a form-fitting manner.
Bei der Ausführung der Fig. 4 ist die Verbindungsstruktur 6 als durchgehende Ver- bindungsrippe ausgeführt. Alternativ kann die Verbindungsstruktur 6 zum Beispiel auch als Verbindungsnapf ausgebildet sein, dessen Querschnitt demjenigen von Fig. 3 entspricht und der parallel zum Napfboden einen rechteckigen oder auch runden Querschnitt haben kann.4, the connection structure 6 is designed as a continuous connection rib. Alternatively, the connection structure 6 can also be designed, for example, as a connection cup whose cross section corresponds to that of FIG. 3 and which can have a rectangular or round cross section parallel to the bowl bottom.
Verbundbauteile 1 entsprechend den Fig. 1 bis 4 kommen zum Beispiel als Hohlkammerbauteile beim Fahrzeugbau zum Einsatz, wobei die Kunststoffkomponente 4 zur Erhöhung der mechanischen Belastbarkeit der Metallkomponente, also des Blechs 2, eingesetzt ist. Insbesondere die Knicksteifigkeit, aber auch z. B. die Torsionsfestigkeit, wird hier- durch verbessert. Beispiele derartiger Verbundbauteile 1 sind mit Kunststoffrippen verstärkte metallische U-Profile sowie Metall-Kunststoffzierleisten. Auch sperrige, größere Bauteile, wie z. B. Frontendmodule von Kraftfahrzeugen, können erfindungsgemäß als Verbundbauteile 1 hergestellt werden.Composite components 1 according to FIGS. 1 to 4 are used, for example, as hollow chamber components in vehicle construction, the plastic component 4 being used to increase the mechanical strength of the metal component, that is to say the sheet metal 2. In particular, the buckling stiffness, but also z. B. the torsional strength is hereby improved. Examples of such composite components 1 are metallic U-profiles reinforced with plastic ribs and metal-plastic trim strips. Bulky, larger components, such as. B. front-end modules of motor vehicles, can be produced according to the invention as composite components 1.
Ein Herstellungsverfahren für ein Verbundbauteil nach den Fig. 1 bis 4 zeigt das schematische Ablaufdiagramm der Fig. 5. Dieses Herstellungsverfahren ist geeignet für ein Blech 2 aus Stahl mit einer Dicke, die größer ist als 0,3 mm, oder für ein Blech 2 aus Aluminium mit einer Dicke, die größer ist als 0,7 mm. Auch andere Blechdicken können verarbeitet werden, sodass die angegebenen Bereiche keine Beschränkung darstellen. Nach einem Wareneingangsschritt 10 wird das Blech 2 zunächst in einem Kontrollschritt 11 hinsichtlich ihrer Abmessungen und ihrer Materialqualität geprüft. Beim Verfahren nach Fig. 5 ist die Haftvermittlerschicht 5 auf das Blech 2 vor dem Wareneingangsschritt 10 bereits aufgetragen worden. Nach dem Kontrollschritt 11 wird das Blech 2 in einem Lagerschritt 12 zunächst zwischengelagert. Kunststoffrohmaterial für die Kunststoffkomponente 4 durchläuft parallel einen entsprechenden Wareneingangsschritt 13 sowie einen Kontrollschritt 14 und einen Lagerschritt 15.A manufacturing method for a composite component according to FIGS. 1 to 4 shows the schematic flow diagram of FIG. 5. This manufacturing method is suitable for a sheet 2 made of steel with a thickness that is greater than 0.3 mm, or for a sheet 2 Aluminum with a thickness greater than 0.7 mm. Other sheet thicknesses can also be processed, so that the specified ranges are not a limitation. After a goods receipt step 10, the sheet 2 is first checked in a control step 11 with regard to its dimensions and material quality. 5, the adhesion promoter layer 5 has already been applied to the sheet 2 before the goods receipt step 10. After the control step 11, the sheet 2 is initially stored temporarily in a storage step 12. Plastic raw material for the plastic component 4 runs in parallel through a corresponding goods receipt step 13 as well as a control step 14 and a storage step 15.
In einem Spritzgussschritt 16 wird das Blech 2 in ein Spritzgusswerkzeug eingelegt und mit dem plastifizierten Kunststoffrohmaterial überspritzt. Hierbei legt sich das Kunststoffrohmaterial über die Verbindungswand 3 an das Blech 2 an, sodass bei der Ausführung des Verbundbauteils 1 nach den Fig. 3 und 4 Formschlussverbindungen gebildet werden. Das Blech 2 ist hierbei derart in die Gießform des Spritzgusswerkzeugs eingelegt, dass die Haftvermittlerschicht 5 einem freien Volu- men in der Gießform des Spritzgusswerkzeugs zugewandt ist. Nach dem Spritzgussschritt 16 folgt in einem Aktivierungsschritt 17 eine Erwärmung des Blechs 2. Diese Erwärmung kann mittels Induktion oder durch Widerstandsheizen erfolgen. Der Aktivierungsschritt 17 kann zum Beispiel erfolgen, indem das gespritzte Verbundbauteil 1 mittels eines Entnahmegerätes des Spritzgusswerkzeugs durch eine Induktionsspule geführt wird. Der Aktivierungsschritt 17 erfolgt insbesondere nur kurze Zeit nach dem Spritzgussschritt 16, sodass das Blech 2 als Folge des Spritzgussschrittes 16 noch warm ist. Die beim Aktivierungsschritt 17 aufzubringende Energie ist damit gering. Aufgrund der Erwärmung wird die Haftvermittlerschicht 5 aktiviert, sodass ein Stoff- schluss zwischen dem Blech 2 und der Kunststoffkomponente 4 über die gesamte Verbindungswand 3, auf der die Haftvermittlerschicht 5 vorliegt, erfolgt. In einem nachgelagerten Kontrollschritt 18 wird das erzeugte Verbundbauteil 1 hinsichtlich seiner Abmessungen, seiner Materialqualität sowie der Widerstandsfähigkeit der Stoffschlussverbindung zwischen dem Blech 2 und der Kunststoffkomponente 4 geprüft. Nach positiver Prüfung wird das erzeugte Verbundbauteil 1 in einem Lager- schritt 19 gelagert. Die Qualitätsanforderungen nach dem Kontrollschritt 18 nicht erfüllende Verbundbauteile 1 werden in einem Nachbearbeitungsschritt 20 nachgebessert. Der Erfolg des Nachbearbeitungsschritts 20 wird in einem weiteren Kontrollschritt 21 überprüft. Nur Verbundbauteile 1 , die dieser Prüfung standhalten, gelangen zum Lagerschritt 19. Die den Kontrollschritt 21 nicht bestehenden Verbundbauteile 1 werden einem Ausschussweiterverarbeitungsschritt 22 zugeführt.In an injection molding step 16, the sheet 2 is placed in an injection mold and overmolded with the plasticized plastic raw material. In this case, the plastic raw material lies against the sheet metal 2 via the connecting wall 3, so that when the composite component 1 is designed according to FIGS. 3 and 4, form-fitting connections are formed. The metal sheet 2 is inserted into the mold of the injection mold in such a way that the adhesion promoter layer 5 faces a free volume in the mold of the injection mold. After the injection molding step 16, the sheet 2 is heated in an activation step 17. This heating can take place by means of induction or resistance heating. The activation step 17 can be carried out, for example, in that the injection-molded composite component 1 is guided through an induction coil by means of a removal device of the injection molding tool. The activation step 17 takes place in particular only a short time after the injection molding step 16, so that the sheet 2 is still warm as a result of the injection molding step 16. The energy to be applied in the activation step 17 is thus low. Due to the heating, the adhesion promoter layer 5 is activated, so that a material bond between the sheet metal 2 and the plastic component 4 takes place over the entire connecting wall 3, on which the adhesion promoter layer 5 is present. In a subsequent control step 18, the composite component 1 produced is checked with regard to its dimensions, its material quality and the resistance of the material connection between the sheet metal 2 and the plastic component 4. After a positive test, the composite component 1 produced is stored in a storage step 19. The quality requirements after the control step 18 composite components 1 are not improved in a post-processing step 20. The success of the postprocessing step 20 is checked in a further control step 21. Only composite components 1 that withstand this test arrive at the storage step 19. The composite components 1 that do not exist in the control step 21 are fed to a reject processing step 22.
Die Höhe der beim Aktivierungsschritt 17 oder beim Spritzguss/Aktivierungsschritt 16,17 einzustellenden Temperatur des Blechs 2 zur Aktivierung der Haftvermittlerschicht 5 und die Zeitdauer der Erwärmung zu dieser Aktivierung hängen von der Dicke des Blechs 2 und von der erforderlichen Verarbeitungstemperatur der Kunststoffkomponente 4 ab.The height of the temperature of the sheet 2 to be set in the activation step 17 or in the injection molding / activation step 16, 17 for activating the adhesion promoter layer 5 and the duration of the heating for this activation depend on the thickness of the sheet 2 and on the required processing temperature of the plastic component 4.
Beim vorstehend beschriebenen Herstellungsverfahren nach Fig. 5 wird ein einseitig mit der Haftvermittlerschicht 5 beschichtetes Blech 2 eingesetzt. Soll bei einem alternativen Verbundbauteil das Blech 2 zwischen zwei damit verbundenen Kunststoffkomponenten angeordnet sein, wird alternativ ein beidseitig mit der Haftvermittler- Schicht beschichtetes Blech 2 eingesetzt.5, a sheet 2 coated on one side with the adhesion promoter layer 5 is used. If, in an alternative composite component, the sheet 2 is to be arranged between two plastic components connected thereto, a sheet 2 coated on both sides with the adhesion promoter layer is alternatively used.
Beim oben im Zusammenhang mit Fig. 5 beschriebenen Herstellungsverfahren wird ein bereits mit der Haftvermittlerschicht 5 beschichtetes Blech 2 weiterverarbeitet. Die Haftvermittlerschicht 5 kann dabei vor oder nach einem für das Blech 2 formge- benden Schritt aufgebracht werden. Alternativ zum Einsatz eines vorher beschichteten Blechs 2 kann die Beschichtung mit der Haftvermittlerschicht 5 auch erst unmittelbar vor dem Spritzgussschritt 16 erfolgen.In the manufacturing method described above in connection with FIG. 5, a sheet 2 already coated with the adhesion promoter layer 5 is processed further. The adhesion promoter layer 5 can be applied before or after a step shaping the sheet 2. As an alternative to using a previously coated sheet 2, the coating with the adhesion promoter layer 5 can also be carried out only immediately before the injection molding step 16.
Wenn im Zusammenhang mit der Erfindung von einer Haftvermittlerschicht 5 ge- sprachen wird, fallen darunter auch Haftvermittlerschichten die mehrlagig (Sandwichschicht) sind und aus mindestens 2 Komponenten bestehend auf dem Blech 2 aufgebracht sind.If one speaks of an adhesion promoter layer 5 in connection with the invention, this also includes adhesion promoter layers which are multilayer (sandwich layer) and which are applied to the sheet metal 2 and consist of at least 2 components.
- Patentansprüche - - claims -

Claims

Patentansprüche claims
1. Verfahren zur Herstellung eines Verbundbauteils (1) mit folgenden Verfahrensschritten: Bereitstellen einer Metallkomponente (2) mit einer Haftvermittlerschicht (5), Einbringen der Metallkomponente (2) in eine Gießform eines Spritzguss- Werkzeugs derart, dass die Haftvermittlerschicht (5) einem freien Volumen in der Gießform zugewandt ist, Spritzgießen (16) einer Kunststoffkomponente (4) auf die Metallkomponente (2), gekennzeichnet durch ein Erwärmen (17) der Metallkomponente (2) zur Aktivie- rung der Haftvermittlerschicht (5) nach dem Spritzgießen (16).1. A method for producing a composite component (1) with the following method steps: providing a metal component (2) with an adhesion promoter layer (5), introducing the metal component (2) into a mold of an injection molding tool such that the adhesion promoter layer (5) is free Volume in the mold facing, injection molding (16) of a plastic component (4) onto the metal component (2), characterized by heating (17) the metal component (2) to activate the adhesive layer (5) after the injection molding (16) ,
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Metallkomponente (2) induktiv erwärmt wird.2. The method according to claim 1, characterized in that the metal component (2) is heated inductively.
3. Verbundbauteil (1), hergestellt nach einem Verfahren nach Anspruch 1 oder 2 mit einer Metallkomponente (2), mit einer über mindestens über eine Verbindungswand (3) an der Metallkomponente (2) anliegenden Kunststoffkomponente (4), gekennzeichnet durch eine mittels nachträglicher Erwärmung aktivierbare Haft- vermittlerschicht (5) im Bereich der mindestens einen Verbindungswand (3).3. Composite component (1), produced by a method according to claim 1 or 2 with a metal component (2), with a via at least one connecting wall (3) on the metal component (2) adjacent plastic component (4), characterized by a means of subsequent Adhesion promoter layer (5) which can be activated by heating in the region of the at least one connecting wall (3).
4. Verbundbauteil nach Anspruch 3, dadurch gekennzeichnet, dass die Kunststoffkomponente (4) vollflächig über die Haftvermittlerschicht (5) an der Metallkomponente (2) anliegt. Verbundbauteil nach Anspruch 1 , dadurch gekennzeichnet, dass die Verbindungswand (3) eine Verbindungsstruktur (6; 8) derart aufweist, dass über die Anlage der Metallkomponente (2) an der Kunststoffkomponente (4) ein zusätzlicher Haftbeitrag, insbesondere ein Formschluss, zwischen diesen Komponenten erfolgt. 4. Composite component according to claim 3, characterized in that the plastic component (4) bears over the entire surface via the adhesion promoter layer (5) on the metal component (2). Composite component according to claim 1, characterized in that the connecting wall (3) has a connecting structure (6; 8) in such a way that an additional adhesive contribution, in particular a positive connection, between these components via the contact of the metal component (2) with the plastic component (4) he follows.
EP04765263A 2003-10-04 2004-09-16 Method for producing a composite structure and the thus obtained structure Withdrawn EP1667833A1 (en)

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