DE102005048295A1 - Making an opening in a coated plastic workpiece comprises heating the workpiece, stamping out and edge shaping a preliminary opening, stamping out the final opening, and cooling the workpiece - Google Patents

Abstract

Making an opening with a shaped edge in a coated plastic workpiece comprises heating the workpiece, stamping out a preliminary opening, edge shaping the preliminary opening, stamping out the final opening, and cooling the workpiece. Independent claims are also included for: (1) apparatus for carrying out the above process; (2) coated plastic part with an edge-shaped opening produced as above.

Description

The The invention relates to a method for producing a breakthrough by a surface-coated Component made of polymer material, wherein the breakthrough limiting Edge of the component is formed and a device for carrying out the Procedure, as well as the component with the breakthrough.

surface-coated Components made of polymer material are used in many ways.

Next Consumer applications, white goods, electronic devices and consumer electronics in furniture construction These are far above all in the automotive industry as so-called attachments common.

One Passenger car today consists of a variety of surface-coated, especially painted exterior annexes polymeric material, including, for example, bumper linings, grille, Fenders, sill panels, Spoilers, covers, gas caps, etc., in some cases are already first door panels, Roof modules and trunk lid in use.

As well is the interior of a vehicle with a variety of surface-coated Attached parts.

The Number of such parts will be in the future continue to increase.

Together these parts are the high requirement placed on them quality in appearance, dimensional accuracy, Mechanics and resistance and durability.

Lots these components made of polymer material have breakthroughs, the example of a bumper fascia For example, for the arrangement of a headlight cleaning system or a parking distance control system.

Solutions to it are known in the form of, for example, injection molding tools, the the needed Breakthrough already in the production of the component from polymer material generate a priori.

Other Techniques for the subsequent Introduction of such a breakthrough are punching or milling.

adversely in these methods is that by punching or milling the pierced painted surface and substrate material having no surface coating, on the edges of the Breakthrough becomes visible. This is often not desired or accepted. Furthermore, it is disadvantageous that the portions of the component surface, the limit the breakthrough thus generated, not a particularly high quality Appearance and often signs of component processing exhibit. Furthermore, of the milled or stamped edges Her paint corrosion and Lackunterwanderung occur.

Here uses the invention, which has set itself the task, a Specify procedure, breakthroughs on surface-coated, In particular, to produce painted components that a marginal shaping in a particularly high quality exhibit.

It It is also an object of the invention to provide a device can be produced with the components according to the method and the component with the breakthrough.

The Task with regard to specifying a method is solved by a method according to claim 1.

The solution the task of specifying a device is disclosed in claim 15.

The Component is according to the solution Task presented in claim 21.

preferred versions are in the subclaims called.

It it was recognized that the generation of a breakthrough by a surface-coated, in particular painted component in combination with a rim forming a especially high quality having, in a stamping process, the embossing / forming process coupled to be performed can.

• – in einem ersten Verfahrensschritt wird das Bauteil in eine Vorrichtung eingelegt,
• – in einem zweiten Verfahrensschritt wird das Bauteil erwärmt,
• – in einem dritten Verfahrensschritt wird das Bauteil mittels eines Stanz/Umformwerkzeuges vorgestanzt,
• – in einem vierten Verfahrensschritt wird das Bauteil mit einer dem Durchbruch zugeordneten Randformung versehen,
• – in einem fünften Verfahrensschritt wird das Bauteil fertiggestanzt,
• – in einem sechsten Verfahrensschritt wird das Bauteil abgekühlt,
• – in einem siebten Verfahrensschritt wird das Bauteil aus der Vorrichtung entnommen.

The method according to the invention for producing a breakthrough in a component made of polymer material with edge formation, which has a particularly high quality, is subdivided into the following method steps:

• In a first method step, the component is placed in a device,
• In a second process step, the component is heated,
• In a third method step, the component is pre-punched by means of a punching / forming tool,
• - In a fourth step, the component is associated with a breakthrough Edge shaping provided,
• In a fifth method step, the component is finish-punched,
• In a sixth method step, the component is cooled,
• - In a seventh process step, the component is removed from the device.

It has proved to be particularly advantageous when the surface-coated, in particular painted component on the surface-coated / lacquered Side heated becomes.

The warming the component, which facilitates the punching / forming process and in particular the during deformation necessary stretching of the material is allowed is by application of heat radiation, thermal contact or thermal convection is achieved.

A warming But it can also be due to the irradiation of microwaves in the material of the component or of the surface coating be achieved when the microwave radiation and the substrate of the component or the surface coating are tuned to each other so that they under heat interact.

preferred Means for heating are a hot air source or an IR radiation source or a heating element or a microwave radiation source.

It has been considered favorable proved when the surface of the painted component on the painted side a temperature in the range of 50 to 95 ° C has.

In This temperature interval is a particularly simple and in particular very precise To perform punching and forming on the component.

The Temperature is also chosen so that it does not cause any damage of the paint, which is applied to the component surface or the Composite structure of lacquer layer and polymer component comes.

Of the next Process step concerns the pre-punching.

in this connection is to be considered according to the invention, that the pre-punching of the component is carried out such that the breakthrough Starting on the painted side is generated.

On this way it is achieved that the painted side is a very high quality the surface has.

It can in the case that the pre-punching is carried out so that the breakthrough on the unpainted side begins and in the direction of the painted Side is made through the polymer material, in particular In addition to that, the lacquer layer at the end of the pre-punching process partially is torn off and torn, resulting in a weakening of the composite of lacquer layer and polymer material leads and, for example, cause migration of the lacquer layer in this area gives, followed by paint corrosion and the like highly undesirable Phenomena.

At the Punching penetrates a punching means through the painted component and separates material. It has proved to be very favorable according to the invention, if during pre-punching more than 80% of the area of the finished breakthrough be generated.

It In particular, has proved very cheap proven when removed during pre-punching material of the component so is that the edge shaping with higher Accuracy feasible is.

This For example, this can be done so that recesses in places provided or predetermined by their geometric design, due to the high voltages due to multiaxial voltage states during Edge shapes are to be expected. Such places are often corners, where the permissible Voltages exceeded become.

Advantageous is to avoid these multiaxial stress states. This can For example, done by the pre-punching in the corners so executed that is already at pre-punching very close to the target contour material is removed, so as to reform the proportion of polymer material that is to keep it small.

It has been found within the scope of the invention that it may be advantageous can, to heat the punching means and the anvil, since thereby punching in a particularly high quality possible become.

To can Punching means and counter-holder have the same temperature or be heated differently. It is also possible, that the punching means and the counterholder are at room temperature level.

the Punching follows next Process step the edge forming.

The Edge shaping takes place by contacting the surface with an embossing device.

In this case, preferably, the heated on the painted side component at the edge of the opening produced by the pre-punching process by means of an embossing device, which is advantageously associated with the punching means and with this in Active compound is formed, reshaped.

It but is also possible according to the invention if the embossing device with the punching means with which the final punching is carried out is in operative connection and assigned to this.

Cheap is in the sense of the inventive concept, when the embossing device heated becomes.

there should the embossing device heated to a temperature in the range of 20 to 120 ° C, to a qualitatively to get very good forming results.

All Particularly preferred should the embossing device in particular be heated to a temperature in the range of 60 to 90 ° C.

The combination of pre-punching and edge-forming has a further advantage in the method according to the invention:
Due to the spatial fixation of the component, which is accomplished in a simple manner by the punching means, which may be for example a punch, edge forming with a particularly high quality is possible because the component in the fixed position does not affect the applied forces acting on the component can dodge.

The painted component is in the edge forming in the area of the opening stretched very much.

These allowed Elongation with which the painted component can be applied, is due to the properties of the composite structure of lacquer layer and polymeric material layer.

limiting Factor here is the limit of the extensibility of the paint film, the from exceeding the permissible Stretch to tear starts. This limit of elasticity can not be exceeded if components with a particularly high quality are to be produced.

In addition, can the edge formation is facilitated by a suitable pre-punching, when material is deliberately removed in places that are the edge of the Make the breakthrough more accessible to the forming tool.

In order to can advantageously be achieved a high quality edge forming.

Farther is in the inventive method beneficial that the surface coating formed by the interaction of pre-punching and forming so will, that these in particular also reach into the breakthrough Edge of the broken component largely covered, ie in the thereby formed breakthrough is "involved" and so too in this area offers a visually very high quality picture.

When Next Process step follows the edge forming the final punching.

The Final punching is done so that the material to the desired Final dimension is removed, where very small tolerances realize extremely advantageous to let.

To cooling The component can be removed from the device and is without further rework ready for use.

The inventive method is not due to the choice of polymer material that makes up the component is manufactured, limited. The polymer materials are prefers thermoplastics.

components Although in the automotive industry are preferably made of polypropylene or modified Polypropylene and its blends produced, but are also components of polyvinyl chloride, polyurethane, polyacrylonitrile-butadiene-styrene (ABS) and its blends, polycarbonate and its blends, polystyrene and its blends, or even the more recently used high temperature polymer materials, such as polyether ketones or polyester ketones or polyamides and their Blends, processable by the method.

The surface coating The component may, for example, a lacquer layer and / or a Include film and / or metallization.

The Metallization may be a metal foil and / or a metal layer, in a vacuum process on the component of polymer material was applied.

films, the for the applications described above are made of polymer material, often with colorants, including dyes, pigments, effectants, colored and have multiple layers. These slides are different Techniques associated with a component of polymer material.

Such Slides have similar Properties on, such as paint coatings, they are also comparable Application areas to find.

It are also foils that are painted on the surface, so one or more paint layers applied to the polymer material exhibit.

By suitable selection of the method according to the invention underlying Parameters, which include the temperature of the heated component, the temperature of the punching / forming agent, the punching / forming speed, the impression pressure, the retention time (time in which the pressure at Forming applied to the component is), the cooling rate, etc. can be tailored to the individual case solution for optimized implementation of the punching / forming process can be easily determined.

The Varnish layer becomes during punching / edge molding together with the polymer material strongly stretched.

It the claim is made to the paint layer that they after the Punching / edge forming the valid Liability specifications and various other tests, where in the process in series a high quality ("Class-A") is to be achieved, that is, it will be no process-related markings used in punching / edge forming through the brought into contact with the component tool and by accepted the punching / edge forming process.

To be the paints for the painted component of polymer material is selected such that it a high elongation, which they use in the manufacture of the breakthrough and the subsequent Edge forming are exposed without damaging the surface or of the composite structure.

in the In general, on the components made of polymer material paint structures applied, which preferably consist of several layers.

Paint systems, which consist of three layers, comprising a primer, a color and effect Basecoat and a clearcoat, the underlying paint layers protects and which gives the varnish layer gloss and weathering stability.

newer Developments are also aimed at the use of two-layer paint systems from where on the surface of the polymer material immediately the basecoat layer, followed by the clearcoat is applied.

Thereby can create such a component with simpler manufacturing concepts These are cheaper to fabricate.

Lots However, components are also in the form of a single-layer coating coated a contrast varnish.

Due to the process is always a certain small proportion of multi-coated parts to be processed, which originate from so-called return paints, d. H. from the repainting already painted, but faulty Parts that go through the paintwork after a repair.

The painted component is used in the area of edge shaping, directly on produced breakthrough by the punching and forming process considerably stretched.

The Elongation is dependent from the component geometry and the respective structural situation of the breakthrough produced by the component.

By the elongation is the polymer material as well as the superficially applied Paint layer mechanically loaded, the result may be that the composite structure made of polymer material and lacquer material is damaged in such a way that the paint adhesion and others on the composite structure of polymer layer and Paint layer requirements are no longer met.

• – Lackhaftungstest
• – Schwitzwassertest
• – Steinschlagtest
• – Medienbeständigkeitstest
• – Mechanischer Belastungstest.

This concerns requirements for standards-based tests on painted components, which include

• - Paint adhesion test
• - condensation test
• - Stoning test
• - Media resistance test
• - Mechanical load test.

It can also happen that, although the composite, d. H. the liability between Polymer material and lacquer layer is retained, but this as far as previously damaged is that other tests that control the quality of a painted components are used, show negative results.

So For example, by microcracks in the paint layer as a pre-damage then a failure in the Schwitzwasserertest or in the stone impact test occur although the lacquer layer after macroscopic first macroscopically had no defects.

In other cases it can cause failures come in the so-called media test, where the painted component media, those in use in the automotive industry are exposed. These include, for example, fuel, Brake fluid, diluted Sulfuric acid, Cleanser and alcohol.

Also the resistance to Road salt is tested.

By means of mechanical stress tests, which include for example: tensile strength, elongation at break, impact resistance and notched impact strength, puncture test, and further tests can be shown be that the stretched areas that limit the breakthrough, have no mechanical damage.

Finally is Also, the color of the breakthrough limiting area of the component is not changed.

This Aspect is especially important because color matches in the automotive industry a primary role play when components - the generally always come from a production that is independent and in a different technique than the paint of the body runs - with this be installed.

each Type of color deviations will prevail in the automotive industry strict quality requirements not accepted.

This Requirement is enough the inventive method.

Advantageous can with this method according to the invention a visually very high-quality surface in the area of edge shaping a steady and without heels, Disturbances, riots or other disturbances curved surface course of the unformed surface towards breakthrough easily generated.

through of the method according to the invention components in high quality manufacture cost-effectively.

• – Optik der Bauteiloberfläche, die ohne Abzeichnungen und ohne Oberflächenbeeinträchtigungen resultiert,
• – Maße, die bei der Herstellung des Durchbruchs reproduzierbar einhaltbar sind (damit ist die Möglichkeit eröffnet, Durchbrüche, die für eine Rastfunktion und/oder Zentrierfunktion genutzt werden sollen, durch Stanzung herzustellen),
• – Eigenschaft des oberflächenbeschichteten, insbesondere lackierten Bauteils, wobei alle Anforderungen, die an ein derartiges Bauteil gestellt werden, in vollem Umfang erfüllt sind.

This high quality is defined as:

• - appearance of the component surface, which results in no marks and no surface damage
• Dimensions which can be reproducibly maintained during the production of the aperture (thus making it possible to punch-cut through apertures which are to be used for a latching function and / or centering function),
• - Property of the surface-coated, in particular painted component, with all requirements that are placed on such a component, are fully met.

• – eine Einrichtung zum Einlegen und Fixieren eines Bauteils
• – eine Einrichtung zum Erwärmen des Bauteils
• – eine Einrichtung zum Stanzen und Umformen
• – eine Einrichtung zum Fertigstanzen
• – eine Einrichtung zum Abkühlen.

The device according to the invention with which the method for producing a perforation provided with a rim forming by a surface coated on at least one side, in particular painted component made of polymer material with a particularly high quality of the breakthrough limiting component section can be carried out comprises

• - A device for inserting and fixing a component
• - A device for heating the component
• - A device for punching and forming
• - a device for final punching
• - a cooling device.

When Device for heating the component is provided an IR radiation source, alternatively also be provided a heating element. Make more alternatives Facilities are hot Air to pass on the portion of the component to be heated which is supported by apertures, nozzles, stencils, etc. can. After all there is also the possibility to heat the component by using microwave radiation, It should be noted here that an interaction between polymer material of the component or surface coating and microwave radiation takes place, which causes heating of the component causes.

The Temperature of the surface of the component is - how already stated above - essential for the achieving quality of punching and edge shaping.

To it can be provided that a temperature sensor of the device is assigned to determine this temperature and then a signal to if the temperature is within a target specification and the punching / forming process can start.

It is also conceivable that in an automated process the signal the sensor is used to the process step of punching / forming to start.

The Device for punching and forming is preferably characterized by being over has a means to create a breakthrough in a component, these means preferably a punch is, but for example, be a router can or a laser.

to execution of forming suitable process parameters are selected and it is taken precautions that in particular no high friction between the tool and the piece of furniture occurs, due to a tool coating, which has a high lubricity has reached.

The surface of the stamp can thereby to achieve a particularly high surface quality of a be machined component specially treated.

This may comprise a polish and / or a coating, wherein the coating is preferably made of a material which on the one hand has a high lubricity, but on the other hand is also highly stable to abrasion and mechanical abrasion. This may be, for example, Teflon or else preferably fluorohalogenated te polymeric compounds, polyamide is also conceivable in this context. Particularly advantageous in this context is a coating to which the coatings or polymer materials show no tendency to adhesion, so that no lacquer or polymer material adheres to it.

hereby can be a particularly high quality be achieved during forming.

Of the Equipment for final punching is - as already at the establishment described for punching - a Underlying means by which a breakthrough in a component produced can be. This is preferably a punch.

It has been found to be advantageous in the context of the present invention, that warming of the punch and the counterpart punches one especially high quality can allow.

The Cooling device The component may, for example, a fan or a cold air source include the heat of the component by air currents dissipate. But there are also other facilities conceivable that a cooling of the Cause component.

The Device can be designed so that the individual process steps essentially by hand accomplished or operated, but it can also be constructed so that the process steps automatically triggered and processed by means of a control become.

Also a combination of these two device designs is conceivable some process steps by hand, others automatically expire.

A preferred design - especially in Meaning of the required high quality parts - is the means of a control automatically running processing of the painted components for the production of a with a margin forming breakthrough by an at least one-sided surface-coated Component made of polymer material with a particularly high quality of the Breakthrough limiting component section.

These Design can also be done with other components within the framework of a network be interconnected to electronically produce a production plan, Quality control, and generate more data.

Very Advantageously, it is possible by the method according to the invention by means of the above said device, breakthroughs in painted components of polymer material to produce a Have locking function and consequently to the particularly high demands with regard to the observance of certain dimensions, so that their Function guaranteed is.

By the very high quality and accuracy, with which there are breakthroughs that define a defined edge have that with a counterpart of another component to be latched with it, with the method according to the invention can be made such breakthroughs, the previously formed by means of complex design of the component forming injection mold now in a simple punch / edge forming process fast, inexpensive and manufactured in high reproducibility.

It is also possible within the scope of the present invention, centering functions by means of the process in a simple manner.

Such Centering functions are needed where, for example, flaps or covers breakthroughs close of components or cover, these are permanently or temporarily closed.

in the Trap of a frequent Commissioning a simple and secure solution is desired, the Precise positioning of the flap / cover on the component.

One Example for this are the covers of the openings of headlight cleaning systems, which at startup the openings then release the nozzles for cleaning the headlamp lens out. After the cleaning process and retraction of the nozzles close the Covers the openings again, with the centerings the defined seat of the covers on the bumper cover.

These Centering devices are within the scope of the present invention without big ones Effort can be produced with high reproducibility.

Especially for the Attachment of ornamental and functional elements, of covers and flaps, etc. are the aforementioned possibilities of Embodiment of the invention a great advantage.

As well is also the Abstimmaufwand when retracting the tool according to the proposal of Invention significantly reduced, which makes the production of such complex Automobile attachments, as they are today's bumper panels, significantly improved.

According to the Invention invention can also components made of polymer material are processed, which are not painted.

Also This results in the advantages described above, which the quality of the reshaped surface at the breakthrough As.

The Invention is also on painted and unpainted components applicable, which is dispensed with punching, so only a high-precision embossing / forming the surface takes place.

In Another variation of the invention can also be applied to the pre-punching be omitted and a breakthrough solely by punching and forming be generated.

It lies finally also within the scope of the inventive idea that on individual process steps the described method can be dispensed with and / or that Process steps in particular exchanged in their order or changed can be.

The according to the inventive method manufactured component may be a bumper cover with a breakthrough for one Windscreen cleaning system and / or a Parkdistanzkontnollvorrichtung and / or a trailer hitch and / or a sensor arrangement and / or an antenna arrangement and / or a light emitting arrangement and / or an ornamental element and / or a functional element and / or a pedestrian protection element and / or a cover and / or a flap and / or a fender and / or a spoiler and / or sill panel and / or door and / or a trunk lid and / or a roof module and / or an ornamentation be.

The Components according to the invention can also in other areas, outside the automotive industry.

This may include components used in the furniture industry, medical engineering and pharmaceutical technology, agriculture, food technology, the toy industry, the consumer goods industry, electrical engineering, in window construction, in building technology, used in packaging materials, etc.

Based on 1 the invention with reference to an attachment 1 explained in detail for an automobile.

The attachment 1 has a Umfonmbereich 2 in which a breakthrough by the attachment 1 was generated.

1 shows several recesses, one of which with 3 is designated, which advantageously make it possible to perform the pre-punching / edge forming precise and easier way, this is advantageously avoided that occur at edge forming stresses that could lead to a paint and / or material damage.

The recesses 3 are arranged in corner areas in order to avoid the particularly high stresses expected there.

1 , continues to show on the component 1 Bearing surfaces, one of which with 4 is designated, which advantageously make it possible to produce the edge forming with high accuracy.

The bearing surfaces 4 are also suitable that, for example, a flap / lid for closing the opening on it is precisely supported.

One with 5 Designated centering / locking can be molded by means of the method according to the invention in a simple manner in the production of such breakthrough with.

Embodiment:

A Plate made of polymer material, in the present embodiment of a polymer blend, made of polypropylene and EPDM, which is on one side with a Paint system consisting of a primer (2-component polyurethane primer, Hydrolack system, flexible adjustment), a metallic-silver-colored Basecoat (1-component, Hydrolack system) and a clearcoat (2-component polyurethane clearcoat, solvent system, highly flexible and high gloss) is coated, is inserted into the punching / forming device and on the painted side by means of IR radiator to a temperature from 70 ° C heated.

Subsequently, will the punching / forming process started, thereby first penetrates the punching tool, that is a temperature of 65 ° C has, from the painted side of the plate, located on a Lower part of the punching device heated to a temperature of 65 ° C is supported. Subsequently shapes that Punching tool with the appropriate tooling the heated painted Polymer material at the edge of the breakthrough. In a further process step the final punching of the breakthrough takes place.

The result is a painted component with a breakthrough, the edge is formed in high quality, wherein the surface of the component in the section that limits the breakthrough, signed off is made free of charge.

All Requirements for the painted component after the punching / forming process Fulfills.

Of the Section of the component that limits the breakthrough does not show any Color change all exams, which include: paint adhesion test, condensation test, stone impact test, Media resistance test, Mechanical stress test are passed with positive result.

Claims (26)

A method for producing a perforation provided with a edge forming by a at least one side surface coated component made of polymer material with a particularly high quality of the breakthrough limiting component portion, characterized in that - in a first step, the component is placed in a device, - in a second process step the component is heated, in a third method step the component is pre-punched by means of a punching / forming tool, in a fourth method step the component is provided with an edge formation associated with the aperture, in a fifth method step the component is finish-punched, in a sixth Process step, the component is cooled, - in a seventh process step, the component is removed from the device. Method according to claim 1, characterized in that that the surface-coated Component heated on the side will, on the surface is coated. Method according to claim 2, characterized in that that the component by application of heat radiation and / or heat conduction and / or heat convection and / or friction and / or radiation of electromagnetic radiation heated becomes. Method according to Claims 1 to 3, characterized that is preferable for heating a hot air source and / or an IR radiation source and / or a heating element and / or a microwave radiation source is used. Method according to claim 1, characterized in that that the pre-punching of the component is carried out such that the breakthrough on the surface-coated Page beginning is generated. Method according to one of the preceding claims, characterized characterized in that during pre-punching more than 80% of the area of finished breakthrough be generated. Method according to claim 5, characterized in that that during pre-punching material of the component is removed in such a way that the edge shaping with higher Accuracy feasible is. Method according to claim 1, characterized in that that the edge formation by contacting the surface with achieved an embossing device becomes. Method according to claim 8, characterized in that that the embossing device heated becomes. Method according to claim 9, characterized that the embossing device is heated to a temperature in the range of 20 to 120 ° C. Method according to claims 9 and 10, characterized that the embossing device is heated in particular to a temperature in the range of 60 to 90 ° C. Method according to one of the preceding claims, characterized in that the component is spatially fixed for edge formation becomes. Method according to claim 12, characterized in that that the spatial Fixation is achieved by the pre-punching. Method according to one of the preceding claims, characterized characterized in that the component in the edge forming with Recesses is provided. Apparatus for carrying out the method according to one the claims 1 to 14. Apparatus according to claim 15, comprising - An institution for inserting and fixing a component A means for heating the component - one Device for punching and forming - a device for final punching - An institution to cool down. Device according to claims 15 and 16, characterized in that that as a means of heating the component is a hot air source is provided. Device according to claims 15 and 16, characterized in that that as a means of heating the component is provided an IR radiation source. Device according to claims 15 and 16, characterized in that that as a means of heating the component is provided a heating mirror. Device according to claims 15 and 16, characterized in that that as a means of heating the component is provided a microwave radiation source. Component made of polymer material, on at least one Side surface coated, with a breakthrough having edge shaping, wherein the Breakthrough limiting component section has a particularly high quality, prepared according to the method of any one of claims 1 to 14th Component according to claim 21, characterized that the quality the breakthrough limiting surface-coated component section characterized by the following properties: - Liability the surface coating - Rockfall resistance the surface coating - condensation resistance - Media resistance - Mechanics - optics - Dimensional accuracy. Component according to one of claims 21 or 22, characterized that the surface coating a paint and / or applied to the surface of the component Foil and / or a metallization is. Component according to claim 23, characterized that the metallization is a metal foil and / or one in one Vacuum method applied metal layer is. Use of a component according to one of claims 21 to 24 as a bumper cover with a breakthrough for a windscreen cleaning system and / or a parking distance control device and / or a trailer hitch and / or a sensor arrangement and / or an antenna arrangement and / or a light emitting arrangement and / or an ornamental element and / or a functional element and / or a pedestrian protection element and / or a cover and / or a flap and / or a fender and / or a spoiler and / or sill panel and / or door and / or a trunk lid and / or a roof module and / or an ornamentation be. Use of a component according to one of claims 21 to 24 as a component in the furniture industry, medical technology and pharmaceutical technology, agriculture, food technology, the toy industry, the consumer goods industry, electrical engineering, in window construction, in building technology, at Packaging materials, etc.