Method for manufacturing a body component for a vehicle body of a vehicle, and body component and vehicle body

Abstract

The present invention relates to a method for manufacturing a body component (1) of a vehicle body (21) of a vehicle (20), the method comprising the following steps: (a) providing a structural component (2) of a body component (1) provided with an adhesive film (4), the adhesive film (4) being applied to at least one adhesive surface (6) of the structural component (2); (b) providing another component (3) of the body component (1); (c) applying an adhesive (5) to the adhesive film (4); and (d) bonding the structural component 2 provided with the adhesive film 4 to another component 3 using an adhesive 5 applied on the adhesive film 4, thereby obtaining a body component 1 as the structural component 2 provided with the adhesive film 4 bonded to the other component 3. Furthermore, the present invention relates to a body component 1 for a vehicle body 21 of a vehicle 20, as well as to a vehicle body 21 of a vehicle 20 comprising at least one such body component 1.

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a body component for a vehicle body of a vehicle, as well as to a body component comprising a structural component and a further component bonded to the structural component, and also to a vehicle body comprising the body component. [Background technology]

[0002] Aluminum components, particularly as structural components of body components, have the disadvantage that after their manufacture they can only be stored for a certain period of time in an oxygen-rich atmosphere or ambient environment before they are oxidized. The aluminum oxide layer formed during oxidation leads to unfavorable properties on the surface of the structural component. In particular, the surface of the structural component loses its adhesive properties. For safety-critical structural components of body components, it is no longer possible to bond the component surface of an aluminum component that includes an aluminum oxide layer to another component in a sufficiently safe and reliable manner.

[0003] Therefore, in the prior art, when manufacturing a body component of a vehicle body that consists of a structural component and another component that are bonded to one another, the structural component is dip-coated before bonding to the other component in order to obtain the specific surface properties of the structural component, i.e., in the case of aluminum components, surface oxidation is reduced and good adhesion properties of the surface of the aluminum component are obtained for subsequent adhesive connection with the other component.

[0004] Obtaining surface properties by dip coating structural components is very effective, but it is time-consuming and expensive. In this case, the dip coating of the assembled vehicle (body-in-white) in which the body component is used is carried out at the latest at the vehicle manufacturer. This means that the structural component is dip-coated twice in the same way: once before bonding to the other component and once after assembly of the vehicle (body-in-white). This process is not only lengthy and therefore already costly, but also places an additional burden on the environment due to the chemicals required for dip coating in the dip bath or baths required for dip coating.

[0005] However, due to the short holding time before oxidation of aluminum structural components, it is difficult to avoid exceeding this holding time before bonding the structural components to other components, and therefore dip coating cannot be omitted in conventional manufacturing processes. For this reason, structural components are often manufactured by suppliers other than the vehicle manufacturer and supplied to the vehicle manufacturer for bonding to other components or for manufacturing body components. The vehicle manufacturer then assembles multiple body components by bonding. Only after that does the vehicle manufacturer assemble the entire vehicle body together with the body components and dip coating them. It takes a lot of time for the vehicle manufacturer to bond the structural components to other components, especially due to transportation from the supplier to the vehicle manufacturer. If the holding time of the structural components cannot be maintained, the aluminum structural components will oxidize and lose their good adhesion properties unless they are dip coated first.

[0006] Therefore, the object of the present invention is to avoid the aforementioned drawbacks when manufacturing body components consisting of structural components and other components, and in particular to provide a method for manufacturing body components for the vehicle body of a vehicle that meets the requirements of the vehicle body, such as crash safety and body rigidity, in an inexpensive and environmentally friendly manner.

[0007] The above-mentioned problem is solved by a method for manufacturing a body component for a vehicle body of a vehicle with the features of claim 1, as well as by a body component with the features of claim 12 and a vehicle body with the features of claim 15. Further features and details of the invention emerge from the dependent claims, the description and the drawings, whereby features and details explained in connection with the method according to the invention naturally also apply in connection with the body component according to the invention and in connection with the vehicle body according to the invention, respectively, and vice versa, so that they are always mutually related or can be mutually related with respect to the disclosure of the individual aspects of the invention.

[0008] According to a first aspect of the present invention, the above-mentioned problem is solved by a method for manufacturing a body component of a vehicle body of a vehicle, comprising the following steps: (a) providing a structural component of a body component provided with an adhesive film, the adhesive film being applied to at least one adhesive surface of the structural component; (b) providing another component of the body component; (c) applying an adhesive to the adhesive film; (d) Adhering the structural component provided with the adhesive film to another component using an adhesive applied on the adhesive film, thereby obtaining a body component as a structural component provided with the adhesive film and adhered to another component.

[0009] The method according to the present invention therefore achieves reliable bonding of a structural component to another component for the production of a body component, without the need for a prior additional dip coating of the structural component. Instead of dip coating, an adhesive film is used to provide good adhesion properties for bonding to the other component. As a result, the other component is no longer bonded to at least one adhesive surface of the structural component itself, but is instead bonded using the adhesive film or to the surface of the adhesive film at the location of at least one adhesive surface. This reduces the costs of preparing a structural component for the production of a body component, thereby reducing the overall production costs of the vehicle body. Furthermore, the omission of dip coating of the structural component alone improves the environmental balance of the production of the body component and thus of the vehicle body.

[0010] The at least one adhesive surface can include at least two or more adhesive surfaces. In particular, the structural component can have from 3 to 30 adhesive surfaces, more particularly from 5 to 20 adhesive surfaces. Typically, the structural component can have 10 adhesive surfaces.

[0011] The adhesive can be applied to the entire surface of the adhesive film or to a portion of the surface of the adhesive film to bond the structural component to another component.

[0012] Providing the structural component may include manufacturing the structural component. Further, providing the other component may include manufacturing the other component.

[0013] The structural component may be made of metal or may have a metallic composition. Furthermore, the further component may be made of metal or may have a metallic composition. The further component may be, for example, a steel sheet. If it is made of steel, it may form, for example, a liner for a vehicle body. However, the further component may also be a composite material made of, for example, plastic.

[0014] The structural components may be aluminum components, i.e., they may consist of aluminum or an aluminum alloy or may at least contain aluminum, which has a short retention time before the surface properties change, and in particular the adhesion properties deteriorate due to oxidation.

[0015] In this case, at least one surface of the structural component provided with the adhesive film that is exposed to the ambient environment may oxidize, resulting in the formation or expansion of an aluminum oxide layer on the at least one exposed surface. The at least one exposed surface is a surface of the structural component that is not provided with an adhesive film or is not a bonding surface. In contrast, only the surface provided for bonding to another component is a bonding surface. Correspondingly, the structural component may have multiple exposed surfaces. Since the at least one exposed surface is exposed to an oxygen-rich ambient environment, the at least one exposed surface oxidizes. Since the at least one exposed surface is not used to bond the structural component to another component, it is therefore possible to intentionally omit protecting the exposed surface against oxidation, i.e., by providing an adhesive film or coating as in the prior art. This intentionally abandons the good adhesion properties of the structural component on the at least one exposed surface during the holding time. Later, and ultimately, at least one exposed surface of the structural component may also be coated in the dip bath along with the vehicle body or vehicle body-in-white.

[0016] In this case, the structural component can have no aluminum oxide layer on at least one adhesive surface, or the aluminum oxide layer on at least one exposed surface of the structural component can be thicker than the aluminum oxide layer on at least one adhesive surface. This can be achieved by covering at least one adhesive surface with an adhesive film immediately after or shortly after production of the structural component (for example, within a maximum of 3 hours, in particular within a maximum of 1 hour or within a maximum of 30 minutes), or after storage in an oxygen-low or oxygen-free atmosphere. This allows very good adhesion properties of the adhesive film on at least one adhesive surface to be achieved, since the adhesive surface is not yet oxidized or is only slightly oxidized at the time of application of the adhesive film.

[0017] The method further comprises the steps of preparing a structural component provided with an adhesive film and applying an adhesive film to at least one adhesive surface of the prepared structural component to obtain a structural component provided with an adhesive film. The application of the adhesive film can be carried out in particular by machine, and more particularly automatically, for example by robot. The bonding of the further component to the structural component can be carried out at the manufacturer of the vehicle body or the vehicle manufacturer, while the production and / or application of the adhesive film can be carried out at the supplier.

[0018] In this case, the adhesive film can be provided as a strip and applied to at least one adhesive surface of the structural component. The application of the adhesive film can be carried out, in particular, by machine, and in particular also automatically, for example by a robot. Correspondingly, the adhesive film can be provided as a strip and cut to fit at least one adhesive surface or to fit several adhesive surfaces. The strip can be unwound, for example, from a roll. Alternatively, the adhesive film can be provided in the form of at least one cutout for at least one adhesive surface or in the form of several cutouts for each adhesive surface.

[0019] Furthermore, the adhesive film can be thermally cured after application to at least one adhesive surface of the structural component. Correspondingly, in this case, the adhesive film is a thermally curable adhesive. Thermal curing can be carried out, for example, in an oven or inductively.

[0020] Furthermore, the adhesive may be a paste adhesive, in particular a paste one-component adhesive. The adhesive may be a different adhesive from the adhesive film or may have a different chemical composition or base. The adhesive may be selected from body adhesives known per se.

[0021] It is also possible for at least one adhesive surface to be uncoated. In particular, it is possible for the structural component to be provided as an uncoated structural component or for the structural component to be uncoated before the adhesive film is applied to the structural component. This purposely eliminates the need to protect the surface of the structural component from oxidation, thereby avoiding the disadvantages associated with this oxidation, such as increased costs and environmental impact, and can be limited to the adhesive film only.

[0022] In this case, the structural components, in particular the body components, can be dip-coated together with the vehicle body only once, in particular cathodic dip-coated. In this case, the vehicle body or vehicle body-in-white is immersed as a whole in one or more dip baths, so that the structural components are necessarily also coated on their exposed surfaces. In contrast, the adhesive surface remains covered by the adhesive film, and the adhesive film itself also has other components glued onto it. Therefore, the adhesive surface is not coated.

[0023] It is also possible to leave a period of at least 12 hours, in particular at least 24 hours or at least 48 hours, between the application of the adhesive film to at least one adhesive surface of the structural component and the dip-coating of the body component, which allows the time to be used for transportation. This allows the adhesive film to be applied to the adhesive surface at the supplier's premises, while the dip-coating takes place at the vehicle manufacturer's premises after transportation and after the vehicle body has been manufactured.

[0024] The structural components can also be provided as extruded or cast components, which can then withstand high forces or only deform slightly when subjected to corresponding forces, for example in the event of a collision.

[0025] Alternatively, the adhesive film may contain an epoxy resin, in particular the adhesive film may contain mainly an epoxy resin, in other words the adhesive film may be epoxy-based.

[0026] Furthermore, the adhesive film can have two adhesive layers and a carrier layer disposed between them. Such adhesive films can also be called structural adhesive films. The adhesive layer can provide the adhesive function. The carrier layer can be integrated with the adhesive layer and can reinforce the adhesive film. The carrier layer can have a mesh structure. A mesh-structured carrier layer can be made of, for example, a woven fabric. Typically, the adhesive film can be covered with a sheet at the adhesive layer, which prevents undesired adhesion. Only after the sheet is peeled off can the oven time of the adhesive be started or the adhesive film can continue to be bonded to the structural component.

[0027] According to a second aspect of the present invention, the above problem is solved by a body component for a vehicle body of a vehicle, which body component has a structural component of the vehicle body and a further component of the vehicle body, an adhesive film arranged between the structural component and the further component, and an adhesive arranged on the adhesive film, which adhesive holds the structural component and the further component together.

[0028] The body component according to the second aspect of the invention therefore has the same advantages as those detailed in relation to the method according to the first aspect of the invention.

[0029] In this case, the body component may be manufactured according to the method according to the first aspect of the invention.

[0030] Further, the structural component is an aluminum component, the adhesive film is disposed on at least one adhesive surface of the structural component, and no adhesive film is disposed on at least one exposed surface of the structural component, and the structural component has an aluminum oxide layer on at least one exposed surface, and (a) the structural component does not have an aluminum oxide layer on at least one adhesive surface, or (b) the structural component has an aluminum oxide layer on at least one adhesive surface, but the aluminum oxide layer present on the exposed surface is thicker than the aluminum oxide layer on at least one adhesive surface.

[0031] According to a third aspect of the present invention, the above problem is solved by a vehicle body of a vehicle comprising at least one body component according to the second aspect.

[0032] A method according to the invention for manufacturing a body component for a vehicle body, a body component according to the invention as well as a vehicle body according to the invention are explained below exemplarily and diagrammatically on the basis of the drawings. [Brief explanation of the drawings]

[0033] [Figure 1] 1 shows a schematic cross-sectional view of a body component according to an embodiment of the present invention; [Figure 2] 2 shows another schematic cross-sectional view of the body component shown in FIG. 1; [Figure 3] 1 shows a side view of a vehicle equipped with a vehicle body according to an embodiment of the present invention; [Figure 4] 3 shows a schematic illustration of the progression of the method steps in a method for manufacturing the body component shown in FIGS. 1 and 2 according to an embodiment of the invention;

[0034] Elements having the same functions and actions are given the same reference numerals in each of FIGS.

[0035] 1 shows a schematic cross-sectional view of a body component 1 for a vehicle body 21 (see FIG. 3) of a vehicle 20. The body component 1 can be arranged in a visible area of ​​the vehicle body 21 or in a non-visible area of ​​the vehicle body 21.

[0036] 1 shows the components and an exemplary arrangement of a body component 1. The body component 1 has a structural component 2, which is an aluminum component. The structural component 2 is a torsion-resistant component that provides the body component 1 with high rigidity to meet safety-related crash requirements in a vehicle body 21.

[0037] Furthermore, the body component 1 has a further component 3, which is connected to the structural component 2 by adhesive bonding, as will be explained in more detail below. The adhesive bond must likewise meet the safety-related crash requirements of the vehicle body 21, i.e., it must withstand a certain minimum load without peeling. The further component 3 may likewise be a structural component 2 made of aluminum, for example, but may also be a simpler component such as a metal sheet, for example a steel sheet, in particular a liner for the vehicle body 21.

[0038] The bond is formed in such a way that epoxy-based adhesive films 4.1, 4.2 are applied to different adhesive surfaces 6 of the structural component 2, ten adhesive surfaces 6 in this example. However, only one adhesive surface 6 is shown in the figure. The adhesive films 4.1, 4.2 are shown in this example as two sections or strips unwound from a product web by way of example. However, the adhesive film 4 can also be only one adhesive film section or strip, or more than two sections. In particular, one section of the adhesive film 4 can be applied to each adhesive surface 6. There are manufacturing tolerances between the sections of the adhesive films 4.1, 4.2. These sections of the adhesive films 4.1, 4.2 are heat-cured.

[0039] Since the adhesive film 4 is applied to the bonding surface 6 of the structural component 2 immediately after its manufacture or shortly thereafter, there is no or only a very small possibility of oxidation of the aluminum of the component 2 at the bonding surface 6. This allows a good adhesion between the adhesive films 4.1, 4.2 and the component 2 to be achieved.

[0040] If an aluminium oxide layer 8 (see Figure 2) is formed on the adhesive surface 6 or if the aluminium oxide layer 8 is relatively thick, the adhesion of the adhesive film 4.1, 4.2 thereon may be poor or the adhesive 5 may not be able to fasten the further component 3 to the adhesive film 4.1, 4.2 in a manner that meets safety-critical crash requirements.

[0041] In contrast, the adhesive films 4.1, 4.2 adhere well to the structural component 2 and further provide good adhesive properties at the surface of the adhesive films 4.1, 4.2 for bonding the structural component 2 to another component 3. The structural component 2 is thereby bonded to the other component 3 by means of the adhesive films 4.1, 4.2 and by means of the adhesive 5 disposed thereon, here a one-component adhesive. The body component 1 produced in this way can itself be assembled or joined to another body component 1 of a vehicle body 21, and the required crash requirements for the joining connection between the structural component 2 and the other component 3 can thereby be met.

[0042] Unlike the prior art, the structural component 2 does not have to be dip-coated separately before being joined to the other component 3. Furthermore, since the aluminum of the structural component 2 cannot oxidize at the bonding surface 6, the structural component 2 can be purchased from a supplier and only joined to the other component 3 at the body or vehicle manufacturer's premises. Instead, the surface of the adhesive film 4 is available for bonding to the other component 3 with the adhesive 5. Furthermore, the structural component 2 can be dip-coated at a later point in time together with the entire vehicle body 21 in a cathodic dip bath.

[0043] FIG. 2 shows another cross-section of the body component 1 shown in FIG. 1. It can be seen that, in addition to the adhesive surface 6, the structural component 2 also has surfaces 7 that are exposed to the ambient environment. These exposed surfaces 7 do not have adhesive film 4 and are not dip-coated. Therefore, the exposed surfaces 7 oxidize on the way from the supplier to the vehicle manufacturer, resulting in the formation of an aluminum oxide layer 8 on the exposed surfaces 7. However, this is not detrimental to the adhesion of the structural component 2 to the other component 3, because the structural component 2 is only bonded to the other component 3 on the side of the adhesive film 4 that covers the adhesive surface 6. The adhesion properties are therefore better there than on the aluminum oxide layer 8 on the exposed surfaces 7 due to the adhesive film 4.

[0044] 2 further shows the structure of the adhesive film 4. The adhesive film 4 has a mesh-like carrier layer 9 and adhesive layers 10.1, 10.2 above and below it. This structure of the adhesive film 4 ensures good adhesion of the structural component 2 and, in turn, good adhesion of the adhesive 5.

[0045] FIG. 4 shows diagrammatically the progression of method steps in a method for manufacturing the body component 1 shown in FIGS. 1 and 2, as used in the vehicle body 21 of FIG.

[0046] In a first method step 31, the structural component 2 is manufactured. This manufacturing of the structural component 2 takes place at the manufacturer of the vehicle body 21 or at a supplier of the vehicle manufacturer of the vehicle 20. For example, the structural component 2 can be manufactured by extrusion as an extruded section made of aluminum. Alternatively, the structural component 2 can be manufactured as a cast component by casting.

[0047] In a second method step 32, the adhesive film 4, which is provided as a strip, is applied to the adhesive surface 6 of the structural component 2. This is done immediately after the production of the structural component 2 or shortly thereafter, so that no aluminum oxide layer 8, or only a small aluminum oxide layer 8 as possible, forms on the adhesive surface 6. This ensures good adhesion of the adhesive film 4 to the adhesive surface 6. Accordingly, this second method step 32 is preferably also carried out by the supplier.

[0048] In a third method step 33, the adhesive film 4 is thermally cured. This can be done, for example, in an oven in which the structural component 2 provided with the adhesive film 4 is placed. Alternatively, this can be done by inductive and localized heating at the adhesive surface 6.

[0049] In a fourth method step 34, the structural component 2 with the heat-cured adhesive film 4 is transported to the manufacturer of the vehicle body 21 or the vehicle 20 and provided to said manufacturer. A long period of time may pass here, during which the exposed surface 7 of the structural component 2 may oxidize. However, since the bonding surface 6 of the structural component 2 is provided with the cured adhesive film 4, the structural component 2 still has good adhesion, i.e., adhesion of the cured adhesive film 4 to the bonding surface 6.

[0050] In a fifth method step 35, a further component 3 of the body component 1 is provided to the manufacturer of the vehicle body 21 or the vehicle manufacturer of the vehicle 20, which further component 3 may itself come from another supplier.

[0051] In a sixth method step 36, the structural component 2 is glued to the further component 3 in the adhesive film 4 with the adhesive 5. This means that the body component 1 is obtained as a structural component 2 provided with an adhesive film 4 which is glued to the further component 3.

[0052] In a seventh method step 37, the body component 1 consisting of the structural component 2 and the further component 3 is finally joined to the further component to form the vehicle body 21.

[0053] In the eighth method step 38, the vehicle body 21 with the body component 1 is finally cathodically dip coated in one or more dip baths, with the aluminum oxide layer 8 formed previously on the exposed surfaces 7 being coated together. This represents the first coating of the exposed surfaces 7 of the structural component 2. [Explanation of symbols]

[0054] 1 Body Components 2 Structural components 3. Other components 4 adhesive film 5. Adhesive 6 Adhesive surface 7 Exposed Surfaces 8 Aluminum Oxide Layer 9 Carrier Layer 10 Adhesive layer 20 vehicles 21 Vehicle body 31~38 Method Steps In the following, exemplary embodiments are presented. [Item 1] A method for manufacturing a body component (1) of a vehicle body (21) of a vehicle (20), comprising the steps of: The method comprises the following steps: (a) providing a structural component (2) of the body component (1) provided with an adhesive film (4), the adhesive film (4) being applied to at least one adhesive surface (6) of the structural component (2); (b) providing another component (3) of the body component (1); (c) applying an adhesive (5) to the adhesive film (4); (d) adhering the structural component (2) provided with the adhesive film (4) to the other component (3) using the adhesive (5) applied on the adhesive film (4), thereby obtaining the body component (1) as the structural component (2) adhered to the other component (3) and provided with the adhesive film (4). [Item 2] Item 2. The method according to item 1, wherein the structural component (2) is an aluminum component. [Item 3] Item 3. The method according to item 2, wherein at least one surface (7) of the structural component (2) provided with the adhesive film (4) that is exposed to the ambient environment is oxidized to form an aluminum oxide layer (8) on the at least one exposed surface (7) or to expand the aluminum oxide layer (8). [Item 4] 4. The method according to any one of items 1 to 3, further comprising the steps of preparing the structural component (2) provided with an adhesive film (4), and applying the adhesive film (4) to the at least one adhesive surface (6) of the prepared structural component (2), thereby obtaining the structural component (2) provided with the adhesive film (4). [Item 5] 5. The method according to claim 4, wherein the adhesive film (4) is heat cured after being applied to the at least one adhesive surface (6) of the structural component (2). [Item 6] 6. The method according to item 4 or 5, wherein the adhesive film (4) is provided as a strip product and is applied to the at least one adhesive surface (6) of the structural component (2). [Item 7] 7. The method according to any one of items 1 to 6, wherein the adhesive is a paste adhesive, in particular a paste one-component adhesive. [Item 8] 8. The method according to any one of items 1 to 7, wherein the at least one adhesive surface (6) is uncoated. [Item 9] 9. The method according to any one of items 1 to 8, wherein the structural component (2) is provided as an extruded or cast component. [Item 10] 10. The method according to any one of items 1 to 9, wherein the adhesive film (4) contains an epoxy resin. [Item 11] 11. The method according to any one of the preceding claims, wherein the adhesive film (4) comprises two adhesive layers (10.1, 10.2) and a carrier layer (9) arranged between the two adhesive layers (10.1, 10.2). [Item 12] A body component (1) of a vehicle body (21) of a vehicle (20), The body component (1) has a structural component (2) of the vehicle body (21) and another component (3) of the vehicle body (21), an adhesive film (4) is disposed between the structural component (2) and the other component (3), an adhesive (5) is disposed on the adhesive film (4), and the structural component (2) and the other component (3) are held together by the adhesive (5). [Item 13] Item 13. The body component (1) according to item 12, wherein the body component (1) is manufactured according to the method of items 1 to 11. [Item 14] The structural component (2) is an aluminum component, the adhesive film (4) is disposed on at least one adhesive surface (6) of the structural component (2), and the adhesive film (4) is not disposed on at least one exposed surface (7) of the structural component (2), and the structural component (2) has an aluminum oxide layer (8) on the at least one exposed surface (7); (a) the structural component (2) does not have an aluminum oxide layer (8) on the at least one bonding surface (6), or (b) The body component (1) according to item 12 or 13, having an aluminum oxide layer (8) on the at least one adhesive surface (6), wherein the aluminum oxide layer (8) present on the exposed surface (7) is thicker than the aluminum oxide layer (8) on the at least one adhesive surface (6). [Item 15] A vehicle body (21) of a vehicle (20) comprising at least one body component (1) according to any one of items 12 to 14.

Claims

1. A method for manufacturing a body component (1) of a vehicle body (21) of a vehicle (20), comprising the steps of: The method comprises the following steps: (a) preparing a structural component (2) of the body component (1) provided with an adhesive film (4), the structural component (2) being an aluminum component, the adhesive film (4) being applied to at least one adhesive surface (6) of the structural component (2) at a manufacturing site of the aluminum component, (b) providing another component (3) of said body component (1); (c) applying an adhesive (5) to the adhesive film (4); (d) adhering the structural component (2) provided with the adhesive film (4) to the other component (3) using the adhesive (5) applied on the adhesive film (4), thereby obtaining the body component (1) as the structural component (2) adhered to the other component (3) and provided with the adhesive film (4).

2. 2. The method according to claim 1, further comprising oxidizing at least one surface (7) of the structural component (2) provided with the adhesive film (4) that is exposed to the ambient environment, thereby forming an aluminum oxide layer (8) on the at least one exposed surface (7) or expanding the aluminum oxide layer (8).

3. 3. The method according to claim 1, further comprising the steps of preparing the structural component (2) provided with an adhesive film (4) and applying the adhesive film (4) to the at least one adhesive surface (6) of the prepared structural component (2), thereby obtaining the structural component (2) provided with the adhesive film (4).

4. 4. The method according to claim 3, wherein the adhesive film (4) is heat cured after being applied to the at least one adhesive surface (6) of the structural component (2).

5. 5. The method according to any one of claims 1 to 4, wherein said at least one adhesive surface (6) is uncoated.

6. 6. The method according to claim 1, wherein the adhesive film (4) comprises two adhesive layers (10.1, 10.2) and a carrier layer (9) arranged between the two adhesive layers (10.1, 10.2).

7. A body component (1) of a vehicle body (21) of a vehicle (20), The body component (1) has a structural component (2) of the vehicle body (21) and another component (3) of the vehicle body (21), the structural component (2) being an aluminum component and the another component (3) being a component made of metal, an adhesive film (4) being disposed between the structural component (2) and the another component (3), an adhesive (5) being disposed on the adhesive film (4), and the structural component (2) and the another component (3) being held together by the adhesive (5).

8. The adhesive film (4) is disposed on at least one adhesive surface (6) of the structural component (2), and the adhesive film (4) is not disposed on at least one exposed surface (7) of the structural component (2), and the structural component (2) has an aluminum oxide layer (8) on the at least one exposed surface (7), (a) the structural component (2) does not have an aluminum oxide layer (8) between the at least one adhesive surface (6) and the adhesive film, or (b) having an aluminum oxide layer (8) between said at least one adhesive surface (6) and said adhesive film, said aluminum oxide layer (8) present on said exposed surface (7) being thicker than said aluminum oxide layer (8) present between said at least one adhesive surface (6) and said adhesive film; A body component (1) according to claim 7.

9. A body component (1) of a vehicle body (21) of a vehicle (20), The body component (1) comprises a structural component (2) of the vehicle body (21) and another component (3) of the vehicle body (21), the structural component (2) being an aluminum component, an adhesive film (4) disposed between the structural component (2) and the other component (3), an adhesive (5) disposed on the adhesive film (4), and the adhesive (5) holds the structural component (2) and the other component (3) together, The adhesive film (4) is disposed on at least one adhesive surface (6) of the structural component (2), and the adhesive film (4) is not disposed on at least one exposed surface (7) of the structural component (2), and the structural component (2) has an aluminum oxide layer (8) on the at least one exposed surface (7); (a) the structural component (2) does not have an aluminum oxide layer (8) between the at least one adhesive surface (6) and the adhesive film, or (b) a body component (1) having an aluminum oxide layer (8) between said at least one adhesive surface (6) and said adhesive film, wherein said aluminum oxide layer (8) present on said exposed surface (7) is thicker than said aluminum oxide layer (8) present between said at least one adhesive surface (6) and said adhesive film.

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