DE102012110153A1 - Mold part e.g. covering part, for e.g. door panel, has carrier formed in region adjacent to light passage for viewable light transparent or translucent UV reflector, which reflects UV light incident from view side of decoration layer - Google Patents

Abstract

The mold part (10) has a decoration layer (12) comprising a light passage (17) between a rear side (13) and a view side (14). Visible light from a rear face is guided to the view side of the decorative layer via the light passage for representation of a symbol (16) at the view side. A carrier (11) is made of a visible light transparent or translucent plastic material. The carrier is formed in a region adjacent to the light passage for a viewable light transparent or translucent UV reflector (23), which reflects UV light incident from the view side of the decoration layer. The region of the carrier is made of a dichroic material. The decorative layer is designed as a timber veneer layer i.e. noble timber veneer layer, and a metal layer.

Description

The invention relates to a molding and a method for producing this molding. The molded part is, in particular, a decorative part and / or trim part designed as a molded part for a vehicle interior.

In the vehicle interior numerous designed as a molding decor and trim parts are installed, such as door panels, consoles and instrument paneling. The decorative and trim parts also include control buttons or the covers of control buttons.

These shaped parts comprise a carrier and a decorative layer with a rear side facing the carrier and a front side designed as a visible side, which is preferably arranged opposite the rear side.

The invention relates to molded parts in which the decorative layer has one or more light passages, in particular a plurality of light apertures, between the back and front over the visible light from the back to the front of the decorative layer is conductive, in particular for displaying a symbol on the Front. The term symbol is here to be understood broadly, it may be, for example, both function symbols as well as geometric patterns and decorating elements, such as lines.

Furthermore, the molded parts with which the invention is concerned have a transparent and / or translucent lacquer layer on the front side of the decorative layer, for example as a protective layer for the front side of the decorative layer. In addition to the protective function, the lacquer layer can also provide an optically and / or haptically pleasing, uniform surface of the front side of the decorative layer and thus of the molded part.

In known moldings of this type, the light passages are filled with plastics which adjoin the transparent and / or translucent paint layer on the front side. This creates an interface between the plastic in the light passage and the paint of the paint layer, which may have a negative effect on the light and light propagation through the light passages, for example, due to the different optical properties of plastic and paint.

The present invention has for its object to provide a new molding and a new method for producing this molding, in which in particular the above disadvantages are at least largely avoided.

This object is achieved with regard to the molded part by the features of claim 1 and in terms of the method by the features of claim 7. Advantageous embodiments and further developments are specified in the respective dependent claims.

The invention provides that in at least one of the light passages in the decorative layer, in particular in all light passages, a transparent and / or translucent paint filling is introduced, wherein it is in the paint filling forming paint to the same paint, which also the paint layer the front of the decorative layer forms.

By using the same paint for paint coating and paint filling unwanted optical effects on the light and light propagation through the light transmissions through at the transition between paint filling and paint layer are at least largely avoided.

A development provides that the paint filling in the at least one light passage and the paint layer on the front of the decorative layer are formed together.

It can also be provided that the paint filling in the at least one light passage and the paint layer on the front of the decorative layer in one piece, in particular without a separation surface to each other, are formed.

A further development provides that the light passages extend substantially rectilinearly and parallel to each other through the decorative layer. It can also be provided that the light passages are aligned substantially perpendicular to the front of the decorative layer.

An embodiment of the invention provides that the smallest cross section of the light apertures is at least 0.7 mm.

According to a further embodiment it can be provided that the light passages are formed in cross-section, at least substantially, circular or oval or rectangular or square. But there are also any other shapes possible, for example, line or slot-like light apertures that can be formed straight, but also curved. Also, the cross section of the light passages over the entire extent between the back and front can be substantially constant, but it is also a changing cross-section, for example, a reduction of the cross-sectional dimensions towards the front or towards the back, possible.

According to one embodiment, the molded part according to the invention is characterized by a transparent and / or translucent film layer on the back of the decorative layer, disposed between the decorative layer and the carrier, wherein the film layer spans at least the at least one light passage with paint filling. This film layer proves to be helpful in the production of moldings. It is already provided before the application of paint and plastic to the decorative layer and thus ensures a defined separation between the paint and plastic on the back of the decorative layer, ie if, for example, initially injected plastic and then the paint is applied, the film prevents penetration of the Plastic in the light apertures. For this purpose, the film expediently has a sufficient thickness and thus rigidity, so that it does not deform at least substantially under the pressure of the injected plastic. In reverse manufacturing order, that is, paint application before plastic application, prevents the film layer penetration of the paint in the space behind the back of the decorative layer.

A development of the molded part according to the invention is characterized by at least one light source emanating from the visible light, which is passed through the light passages from the back to the front of the decorative layer. Preferably, this light source is arranged on and / or in the carrier, in particular in a recess in the carrier.

The light source is, for example, a light emitting diode (LED) or an electroluminescent film (EL film), but also any other type of light source, into consideration. The light sources are connected via electrical lines to a circuit and the necessary control devices. Preferably, the light source is attached directly or via a light element, in which the light source is integrated, to the molded part, for example in the already mentioned recess in the carrier, so that the outgoing light from the light source or the light element irradiates the back of the decorative layer. In this case, the light source or the light element by means of holding devices, such as latching hooks, be attached to the molded part. The holding devices can be attached to the carrier or be formed by the carrier, in particular in one piece.

The carrier expediently comprises, for example, a plastic which is substantially transparent or translucent to visible light. In general, the support can be made of metal and / or plastic and / or hard foam or comprise metal and / or plastic and / or hard foam. For example, it may be or include a thermoplastic or an elastomer or a duroplastic. The carrier may be glued to the decorative layer and / or molded and / or pressed and / or cast. It is also expedient if the carrier has or forms one or more fastening elements for the attachment of the molded part, in particular in a vehicle interior.

In general, it can be provided in the molded part according to the invention that the decorative layer is formed from a composite material, in particular a layer composite material, which comprises a decorative layer. The decorative layer may in this case be, for example, a wood veneer, a metal layer, a film, preferably a plastic and / or metal foil, and / or a textile layer or a fabric. But it is also possible that the decorative layer is a metal layer, a film, preferably a plastic and / or metal foil, and / or a textile layer or a fabric. When providing a wood veneer, the wood veneer is usually provided on its back with a nonwoven layer for flexibilization of the wood veneer. The wood veneer may be both a real wood veneer and a synthetic wood veneer.

A further embodiment provides that the decorative layer is not transparent or opaque to the light radiated on its rear side. Preferably, the decorative layer should be designed such that this light does not shine in attenuated form through the decorative layer. In other words: The decorative layer should be opaque, a viewer should not be able to see the light behind the decorative layer. By a corresponding decorative layer selection ensures that the light is passed through the light passages to the front and thus the symbol shown with the light is clearly and rich in contrast on the front of the decorative layer is displayed. For this purpose, the decorative layer, for example, on a side facing the back of the decorative layer, a layer opaque to at least visible light, in particular a printed film or a dyed paper or non-woven or a metallic foil.

According to a development, the molded part, in particular in the area behind the symbol to be displayed, may comprise a capacitive proximity sensor and / or switch. Then, the molding can be used not only as a display element for symbols, but also as a switch that detects a touch or approach, for example, a finger and passes as a switching signal to a control device.

According to a variant of the invention, the light passages on the front side of the decorative layer are arranged uniformly distributed at least in the region of the symbol to be displayed. In this case it is possible to display any symbols on the front. The symbol represented by the light passages is determined by the irradiation of the back side. Only the light passages, which are also irradiated with light, pass this on to the visible side, the entirety of the illuminated light passages then represents the luminous symbol on the front, the remaining light passages remain dark. The symbol must therefore be generated by appropriate irradiation on the back of the decorative layer. Accordingly, only the light passages required to display the symbol at the back of the decorative layer are irradiated with light.

According to an alternative variant, the light passages are arranged on the front of the decorative layer according to the symbol to be displayed, that is, when all the light apertures are illuminated, the desired symbol is displayed. In this case, the lighting of the back can also be done as described above already in the form of the symbol to be displayed. But it is also possible uniformly, for example, surface to illuminate the back, for example, directly through the light of a light source, such as an LED, without the interposition of a printed with the symbol sheet or plate. In this case, however, only the intended symbol is shown on the front, since the light apertures are arranged according to the symbol shape and accordingly, despite uniform, planar irradiation, only these light passages pass the light to the front.

Mixed forms between the two aforementioned embodiments are also possible, for example, the light passages may be scattered around the lines and / or points and / or surfaces of a symbol to be displayed, and the irradiation with the symbol on the back then provides for the exact representation of the symbol the visible side.

In the method according to the invention for producing the molded part according to the invention, a layer forming the decorative layer in the molded part is first of all provided with a front side and a rear side provided as a visible side in the molded part, one or more openings between the back side and the front side forming the decorative layer in the molded part to be produced are introduced to form the light transmissions or in the molded part to be produced. The method according to the invention is characterized in that lacquer is applied to the front side of the layer forming the decorative layer in the molded part such that, in one operation, the lacquer for forming the lacquer filling is introduced into at least one of the apertures and, secondly, the lacquer for formation the paint layer is applied to the front of the decorative layer.

According to a development, a transparent and / or translucent film layer is applied to the back of the decorative layer prior to the application of the paint, such that the film layer spans at least the at least one light passage to be filled with lacquer. The purpose of this film layer has already been explained above with reference to the molding.

According to a variant of the method, the plastic forming the carrier in the molded part can be applied, in particular molded, after the application of the lacquer. According to an alternative variant of the method, however, the plastic forming the carrier in the molded part can also be applied, in particular molded, prior to the application of the lacquer. In both cases, it is expedient if, in advance, the already mentioned transparent and / or translucent film layer is applied to the back of the decorative layer such that the film layer spans at least the at least one light passage to be filled with lacquer and thereby prevents lacquer penetrates into the area behind the back of the decorative layer or plastic in the light passage.

The introduction of the openings between the back and front to form the light apertures in the molded part to be produced can be done for example by means of laser or water jet machining. With regard to laser processing, for example, the use of a UV laser comes into consideration.

The method described above may be followed by further process steps to complete the moldings, for example mechanical and / or chemical treatment of the visible side surface, cutting of the molded part, painting of the edge regions of the molded part in order to prevent ingress of moisture between the layers , a labeling and attaching additional decorative elements and / or mounting parts.

The invention will be explained in more detail below with regard to further features and advantages with reference to the description of embodiments and with reference to the accompanying schematic drawings.

Show

1 a vehicle interior with molded parts according to the invention,

2 in a schematic cross-sectional representation of an embodiment of a molded part according to the invention,

3 a plan view of a section of a visible side of the decorative layer of a molded part according to the invention, and

4 in a schematic cross-sectional view of an enlarged section of the molding after 3 ,

Corresponding parts and components are designated in the figures with the same reference numerals.

1 schematically shows a vehicle interior with numerous moldings according to the invention 10 , These are decorative parts and / or trim parts for a vehicle interior, which are designed as molded parts.

2 shows a schematic cross-sectional view of an embodiment of a molded part according to the invention 10 , The molding 10 includes a carrier 11 and a decorative layer 12 , The carrier 11 forms fasteners 18 out, about which the molding 10 in a vehicle interior (see 1 ) can be attached as a decorative or trim part.

The decorative layer 12 has a the carrier 11 facing back 13 and one of the back 13 opposite, designed as a visible side front 14 on. Furthermore, the decorative layer 12 a symbol area 15 to represent a symbol 16 on the front side 14 on. The decorative layer 12 is opaque, for example, it is a wood veneer with a fleece layer attached to the back of the wood veneer as an opaque layer (see 4 ).

In the symbol area 15 the decorative layer 12 extend several light apertures 17 from the back 13 to the front 14 through the decorative layer 12 , on the visible light, with the back 13 is irradiated to the front 14 the decorative layer 12 is conductive to the representation of the symbol 16 on the front side 14 ,

That the back 13 the decorative layer 12 irradiating light emanates from a light element 19 from the back 13 the decorative layer 12 in a recess 20 in the carrier 11 is arranged. Attached is this light element 19 over on the carrier 11 trained hooks 24 , A possible design of the light element 19 will be explained below by means of 4 described. The electrical connection cables of the light element required for the function 19 are in 2 not shown. To enable the transmission of the light is the carrier 11 formed from a visible or substantially transparent or translucent plastic, for example, polycarbonate (PC) or polymethylmethacrylate (PMMA).

3 shows a plan view of a section of a front side 14 the decor side 12 a molded part according to the invention 10 , On the front side 14 is a shining symbol 16 shown. This is the decor page 12 at the back 13 irradiated with light from the light apertures 17 to the front 14 is forwarded.

4 shows in a schematic cross-sectional view of an enlarged section of the molding after 3 , To recognize the carrier 11 , the decorative layer 12 with back 13 and front side 14 and the icon area 15 to represent a symbol 16 on the front side 14 , The decorative layer 12 is opaque, for example, it is a wood veneer layer 25 with an opaque layer attached to the back of the wood veneer 27 , For example, a nonwoven layer. In the symbol area 15 the decorative layer 12 extend several light apertures 17 from the back 13 to the front 14 through the decorative layer 12 , about the light, with the back 13 is irradiated to the front 14 the decorative layer 12 is conductive to the representation of the symbol 16 on the visible side 14 ,

Also in 4 it can be seen that this is the back 13 the decorative layer 12 irradiating light from a light element 19 that goes out at the back 13 the decorative layer 12 in a recess 20 in the carrier 11 is arranged. Attached is this light element 19 over on the carrier 11 trained hooks 24 , In the light element is a light source 21 arranged, for example an LED.

When the light source is switched on 21 thus irradiates the light of the light source 21 through the carrier 11 through the back 13 the decorative layer 12 , The light passages 17 can either be even in the symbol area 15 but it is also possible that the light apertures 17 at least substantially according to the shape of the symbol to be displayed 16 are distributed or that a light passage 17 or a group of light apertures 17 is shaped according to the symbol to be displayed, for example, by a correspondingly shaped slit-like formation of a light passage 17 , The light then passes through the light apertures 17 from the back 13 to the front 14 the decorative layer 12 directed. There are the luminous light apertures 17 the desired glowing symbol 16 represents.

In the light element 19 is also a capacitive proximity sensor and / or switch 22 arranged. This captures when a finger is in the symbol area 15 approaches or touches and activates or deactivates a desired function via a control device. For the proximity sensor and / or switch 22 or the light source 21 required electrical lines inside and outside the light element 19 are in 4 not shown.

A control device, not shown, the light source 21 with different current drive and thus different predefined luminous intensity of the light source 21 to adjust. Accordingly, the symbol lights up 16 on the visible side 14 in different light intensities.

4 also shows that the front 14 the decorative layer 12 with a transparent and / or translucent lacquer layer 26 is covered. Preferably, this lacquer layer leaves 26 the light of the glowing symbol 16 essentially unchanged through. Also in the light apertures 17 in the decorative layer 12 is introduced a transparent and / or translucent paint filling. The paint, the paint layer 26 is the same paint, which also paint filling the light apertures 17 forms. The paint filling in the light apertures 17 and the paint layer 26 on the front side 14 the decorative layer 12 are integrally formed without separation surface to each other, for example by the paint filling and the paint layer 26 were trained together.

Finally, in 4 one at the back 13 the decorative layer 12 between decorative layer 12 and carriers 11 arranged transparent and / or translucent film layer 23 it can be seen that the light apertures 17 spans and during the manufacture of the molding prevents paint from the light apertures 17 on the back 13 the decorative layer 12 passes and plastic for carrier education in the light apertures 17 penetrates.

LIST OF REFERENCE NUMBERS

10

 molding

11

 carrier

12

 decorative layer

13

 back

14

 front

15

 Symbol area

16

 symbol

17

 Light transmission

18

fastener

19

 light element

20

 recess

21

 light source

22

 Capacitive proximity sensor and / or switch

23

 film layer

24

 hook

25

 Wood veneer layer

26

 paint layer

27

 Opaque position

Claims (8)

Molded part ( 10 ), in particular formed as a molded part decorative part and / or trim part for a vehicle interior, comprising a support ( 11 ), a decorative layer ( 12 ) with a carrier ( 11 ) facing back ( 13 ) and designed as a visible side front ( 14 ), wherein the decorative layer ( 12 ) one or more light passages ( 17 ), in particular a plurality of light passages ( 17 ), between the back ( 13 ) and front side ( 14 ), via the visible light from the back ( 13 ) to the front ( 14 ) of the decorative layer ( 12 ) is conductive, in particular for representing a symbol ( 16 ) on the front side ( 14 ), and a transparent and / or translucent lacquer layer ( 26 ) on the front side ( 14 ) of the decorative layer ( 12 ), characterized in that in at least one of the light passages ( 17 ) in the decorative layer ( 12 ) is introduced a transparent and / or translucent paint filling, wherein it is in the paint filling forming paint to the same paint, which is also the paint layer ( 26 ) at the front of the decorative layer ( 12 ). Molding according to claim 1, characterized in that the paint filling in the at least one light passage ( 17 ) and the lacquer layer ( 26 ) on the front side ( 14 ) of the decorative layer ( 12 ) are formed together. Molding according to claim 1 or 2, characterized in that the paint filling in the at least one light passage ( 17 ) and the lacquer layer ( 26 ) on the front side ( 14 ) of the decorative layer ( 12 ) in one piece, in particular without separation surface to each other, are formed. Molded part according to one of the preceding claims, characterized by a transparent and / or translucent film layer ( 23 ) on the back ( 13 ) of the decorative layer ( 12 ), arranged between decorative layer ( 12 ) and supports ( 11 ), wherein the film layer ( 23 ) at least the at least one light passage ( 17 ) with paint filling spans. Molding according to one of the preceding claims, characterized by at least one light source ( 21 ) emanating from the visible light through the light passages ( 17 ) from the back ( 13 ) to the front ( 14 ) of the decorative layer ( 12 ). Molding according to claim 5, characterized in that the light source ( 21 ) and / or in the carrier ( 11 ) is arranged, in particular in a recess ( 20 ) in the carrier ( 11 ) is arranged. Method for producing a molded part ( 10 ) according to one of the preceding claims, in which first a decorative layer ( 12 ) in the molded part ( 10 ) forming layer with a visible side in the molding ( 10 ) and a rear side is provided, in which the decorative layer ( 12 ) in the molded part ( 10 ) forming position one or more openings between the back and front to form the light or the passages ( 17 ) in the molded part ( 10 ) are introduced, characterized in that paint on the front of the decorative layer ( 12 ) in the molded part ( 10 ) forming layer is applied, that in one operation, on the one hand, the paint for forming the paint filling is introduced into at least one of the openings and on the other hand, the paint for forming the paint layer ( 26 ) on the front side ( 14 ) of the decorative layer ( 12 ) is applied. A method according to claim 7, characterized in that prior to the application of the paint, a transparent and / or translucent film layer ( 23 ) on the back ( 13 ) of the decorative layer ( 12 ) is applied in such a way that the film layer ( 23 ) at least the at least one light passage ( 17 ), which is to be filled with paint, spans.

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