DE202007017218U1 - Molded part with wood veneer as decorative layer, in particular decorative part and / or trim part for a vehicle interior, with a soft layer - Google Patents

Abstract

Molded part (10), in particular decorative part and / or trim part for a vehicle interior,
comprising a decorative layer (11) and a hard carrier (14),
wherein the decorative layer (11) is a wood veneer (18) or comprises a wood veneer (18) as a decorative layer,
characterized in that
between the decorative layer (11) and the carrier (14) a soft layer (13) is provided,
wherein the soft layer (13) is formed such that upon an external pressure on the decorative layer (11) yields the underlying soft layer (12) and the decorative layer (11) is pressed into the soft layer (12).

Description

The The invention relates to a molded part, in particular a decorative part and / or a fairing part for one Vehicle interior.

These Molded parts comprise a hard carrier, usually made of plastic and / or metal and / or hard foam, and a decorative layer. The decorative layer can over extend the entire molding, but it is also possible that it is associated with only a portion of the molding.

at known moldings comprises or the decorative layer is a decorative layer. The decorative layer may be, for example, a metal layer or act to a film layer or a textile or fabric layer. Furthermore, decorative layers of wood veneer are known. These latter Moldings comprising a wood veneer as a decorative layer are the subject explained below Invention. The wood veneer may be both a Real wood veneer as well as a synthetic wood veneer trade.

Wood is a relatively hard one Material, and accordingly are the above-mentioned molded parts comprising a wood veneer and a hard carrier altogether hard. they seem On contact, this means when pressure on the decor, hard and stiff. Accordingly, the haptic Perception of these decors - and this corresponds to the optical appearance or effect the decors of expectation and the experience of persons - hard and stiff.

Of the present invention is based on the object, a molding indicate with a wood veneer as a decorative layer, which is a clear evokes soft haptic perception.

These Task is solved by the features of the claims 1 and 3. Advantageous embodiments and further developments are in the dependent of claim 1 and 3 claims specified.

at the molded part according to the invention, having a decorative layer and a hard carrier, wherein the decorative layer is a wood veneer or includes a wood veneer as a decorative layer, between the decorative layer and the carrier is a soft layer (also: soft component, soft element, soft body). This soft Layer is designed such that, with an external pressure on the decorative layer, for example, at a touch by a person who yields to underlying soft layer and the decorative layer is pressed into the soft layer.

The Advantages of the invention lie in the distinctly soft haptic Perception when touched the or pressure on the wood veneer of the decorative layer of the molding. Due to the optically hard appearance of the wood veneer is the soft feel for the touching one Person surprising. Overall, a soft feel is perceived as pleasant and beneficial.

From Another advantage is a perceived as pleasant acoustic behavior of the molding according to the invention. For example, when knocking the resulting noise sounds clearly muted compared to known moldings where the decorative layer directly to the hard carrier borders.

in addition come advantageous safety aspects. A soft surface absorbs shocks and helps thus, to avoid injury. At least the soft surface of the Moldings help reduce injuries. This is important in vehicles, among other things in accidents.

Of the hard carriers in turn, ensures the required hardness and rigidity of the molding as a whole and thus enables installation in a vehicle interior.

A Further development provides that the soft layer is elastic, in such a way that the soft layer and the decorative layer at Removal of external pressure her original again Take shape. The at touch or Pressure from outside The decorative layer occurring deformation should thus at lessening Pressure to go back again and when pressure is removed completely disappear again, so that the molded part looks like it was before the touch.

at another molding according to the invention, which also has a decorative layer and a hard carrier, wherein the decorative layer is a wood veneer or a wood veneer As a decorative layer is between the decorative layer and the carrier a soft layer provided. The thickness of the soft layer is in the Range of 1 mm to 30 mm, in particular from 5 mm to 20 mm, preferably at about 10 mm. Furthermore, it can be provided that the thickness of the soft layer greater than the thickness of the decorative layer is, in particular at least twice, preferably at least four times as big as the thickness of the decorative layer. This molding can also complement the Have features of the aforementioned molding according to the invention.

The advantages of this molding correspond to the advantages explained with reference to the aforementioned molding. A thin decorative layer, usually with a thickness of less than 1 mm, preferably less than 0.5 mm, ensures that these are included Pressure gives way, even with solid materials such as metal decors or wood veneers. The comparatively thick soft layer ensures that the yielding is controlled under pressure. At the same time, the comparatively large thickness of the soft layer allows a clear perception of yielding and thus the soft feel for a person touching the decorative layer or pressing against the decorative layer of the molded part.

The Subsequent training and further training can in both the above Be provided moldings.

So it can be provided that the thickness of the soft layer is greater than the thickness of the carrier is, in particular at least twice, preferably at least four times as big as the thickness of the carrier. The thickness of the carrier is chosen that the molding as a whole that for a built-in part in the vehicle interior required hardness and having rigidity. The significantly thicker soft layer supports the already repeatedly mentioned, clearly perceptible soft feel.

According to one Further development of the molding according to the invention The soft layer is or comprises a foam layer or a foamed layer. This foam layer or foamed Layer can be made, for example, of polyurethane foam and / or semi-hard or soft integral foam, each preferably in open-celled or closed-cell form, be formed. Also, the foam layer or foamed Location by foam backing the decorative layer be formed.

In an advantageous embodiment comprises the decorative layer on her the soft layer facing side in addition to the wood veneer one another layer which is designed as a flexibilizing the wood veneer Location and / or as a diffusion-tight layer.

The Wood veneer itself is, even if it by means of rotary loops and Flexen pretreated, brittle and can therefore be made possible by the due to the soft layer Movements and deformations within the molding at pressure or contact damaged become. For example, the yielding of the decorative layer as well the pushing in in the soft layer to damage in wood veneer, for example, to breaks or cracks lead. This is at least largely prevented by the aforementioned further situation, because the connection between wood veneer and further location due the flexible properties of the other location also for a more flexible the wood veneer provides. Flexibilization is to be understood here as meaning that the wood veneer by the connection with the further situation clearly becomes more mobile, d. H. even with larger movements vertical to Veneer level kick - in difference for pure wood veneer without connection to another layer - no fractures, Cracks or other damage the veneer layer on. Thus, you can in itself hard and brittle Wood veneer decor layers easily and without damage by the soft Layer enabled Follow movements.

The Diffusion-tightness of the other layer ensures that the soft layer forming material in the formation of the soft layer is not in the porous one Wood veneer can penetrate and damage this. The diffusion-tight further position thus comes to the function of a protective layer.

Further is a protective effect of the wider situation in that they the production of the soft layer optionally occurring Pressure intercepts and thus damage the wood veneer, for example, a tearing due to the pressure in the material supply for the soft layer, prevented.

Finally serves the further layer also the connection between the decorative layer and the soft layer, since the soft layer forming material in the molding production can penetrate into the further situation. Also can be an affine Connection between another layer and soft layer result.

at the further layer may be, for example, a mat Fiber base, preferably a non-metallic mat or a textile Mat or a prepreg mat, or a nonwoven layer or a film plastic and / or fiber-based or a leather layer or a Foam layer, preferably made of plastic foam, or a lacquer layer act.

at The above-mentioned textile mats are technical textiles, d. H. they are made of fibers. she are stable and at the same time flexible, have a high strength and a high modulus of elasticity (Modulus of elasticity) on and are easy, for example, compared to metals.

The term "prepreg" used above is the short form for "preimpregnated fibers". Prepregs are made of fiber fabrics or fiber sheets impregnated with resins, such as long fiber fabrics, loop-shaped continuous filaments, or combinations thereof. For example, carbon fiber or carbon fiber, glass fiber, natural fiber and synthetic fiber such as aramid fiber are suitable as the fiber type. Epoxy, polyester and phenolic resin in Be come as a resin costume. In particular, the fiber type determines the strength and elastic modulus (modulus of elasticity) of the prepreg and thus the prepreg mat as essential properties. Prepreg mats are stable, have a high strength and a high modulus of elasticity (modulus of elasticity), and are lightweight, for example, as compared to metals.

A appropriate training further provides that the aforementioned additional layer of the decorative layer connected to the wood veneer, in particular via an adhesive layer to the Wood veneer is tethered.

In a further embodiment of the invention, the wood veneer on its side facing away from the soft layer, a lacquer layer as a protective layer. This protective layer prevents damage on the side of the visible surface of the molded part, for example by penetration of liquids or dirt in the wood veneer. At the same time, the varnish layer ensures for one visually and / or haptically pleasing, uniform surface of the wood veneer of the molding. So that the varnish layer due to by providing the soft Layer enabled Movements and deformations of the wood veneer during printing or touching not damaged is, this is fexibel and / or eleastisch formed, d. H. can the movements of the wood veneer at least largely without damage consequences.

This can according to a first variant can be achieved by a thin-layer paint layer, for example a lacquer layer with a maximum thickness of 0.2 mm, in particular of a maximum of 0.1 mm. This is for example the use for this purpose of oily Paints and / or 1K or 2K paint systems in the production of the lacquer layer. The latter are z. B. to paint systems comprising resin and hardener. Suitable examples are PU paints, acrylic paints and shellac.

According to one second variant come as a flexible coating layer but quite also thicker paint layers into consideration, for example, with a thickness of about 1 mm. In this case, the flexibility can be achieved by use of paints in the preparation of the paint layer, which is also in the cured state are flexible or elastic. Of course, this also applies in addition for the aforementioned thin-layered Paints.

Of the carrier of the molding according to the invention may be a plastic or include a plastic. In consideration come here both thermoplastics, such as PE, PP, ABS, PA, PPA or a plastic blend system, for example an ABS / PC blend, as well as elastomers or thermosets, for example on a resin basis, z. B. based on unsaturated Polyester resins, in awe. The carrier may also be a metal and / or be a hard foam or a metal and / or a hard foam (also: compact foam) include. For example, the carrier may be a sheet metal and / or comprise a plastic part as an insert. Hard foam, for example to an already formed soft layer in a subsequent Process step are poured, z. B. by the composite Decorative layer and soft layer inserted in another mold becomes. The hard foam may be, for example, a hard PU foam act.

At the carrier are expediently one or more fasteners for the attachment of the molding, especially in a vehicle interior, provided or molded or trained.

According to one Training can also be a ductile insert in and / or on the carrier be provided, in particular a metal sheet, preferably made Aluminum or steel, or a non-metallic mat, in particular a textile mat or a prepreg mat. This deposit poses the deformability of the molding as a whole safe, d. H. collapse or tearing when impact should as possible be prevented. Such moldings with ductile insert are mounted in the vehicle interior, in particular in areas where in an accident with the impact of a driver or passenger is to be expected.

The soft layer can over an adhesive layer to be attached to the decorative layer. Alternatively or additively, it is also possible that the connection of the soft layer to the decorative layer by at the formation of the soft layer in the decorative layer, in particular in one or the soft layer of the decorative layer, penetrated (for example in pores, depressions and / or undercuts) and / or to the Decorative layer affinely connected, the soft layer forming material, especially foam, takes place. For the latter variant, it should be noted that PU foam in particular is a very good adhesive, so that on contact of the still liquid PU foaming material with the decorative layer a strong connection between the layers results.

The connection between soft layer and hard carrier can be made via an adhesive layer. Also contemplated is a connection of the soft layer to the hard carrier by in the formation of the soft layer in the hard carrier penetrated (for example, in pores, depressions and / or undercuts) and / or affinely attached to the hard carrier, forming the soft layer Material, in particular foam. With regard to the Adhesive properties of the liquid PU foam-forming material is referred to the above statements.

The inventive molding can be characterized produce a material forming the soft layer, in particular a foam-forming material, to a decor layer forming Material and / or a hard carrier forming material attached is, in particular, is cast, preferably by means of a casting process, especially in a casting and / or foaming tool, and / or is glued, preferably by means of a press-bonding process.

It is possible, first to apply the soft layer to the decorative layer, in particular to pour, and subsequently the carrier to the decorative layer opposite Side of the soft layer to install, in the case of rigid foam, for example to pour (preferably in an additional Casting and / or foaming tool).

A expedient alternative Embodiment of the production provides that that the decorative layer forming material and the hard carrier forming material on opposite Sides of a mold cavity of the casting and / or foaming tool be arranged and then the material forming the soft layer between the decoration layer forming material and the material forming the hard carrier becomes. This procedure allows a particularly simple production of the molding according to the invention.

In front the attachment of the material forming the soft layer may be be expedient first to produce the material forming the decorative layer. This can be done by flexibilizing and / or protecting the wood veneer. Comes into consideration For this purpose, the formation of the decorative layer forming material as Composite material, for example by one or as the wood for nier flexibilizing layer and / or formed as a diffusion-tight layer another layer is attached to the wood veneer, preferably by Gluing or laminating.

According to one Variant may be the material forming the decorative layer and / or the the hard carrier forming material prior to the attachment of the soft layer forming Materials are preformed, so it already has its later form as a decorative layer or hard carrier having in the molding. Possible for this process step for example, a pressing tool.

Further may be the decorative layer forming material and / or the hard carrier forming material prior to the attachment of the soft layer forming Material surface be trained and / or not yet according to its later form as a decorative layer or hard carrier be formed in the molding. It is possible that the shaping of the the decorative layer forming material and / or the hard carrier forming Material in its later form as a decorative layer or hard carrier in the molding at and / or by the attachment of the soft Layer forming material takes place.

To the above-described method steps can still be provided that the molding is further finished by further process steps becomes. For example, you can Cutting and / or grinding processes, a processing of the visible surface of the Decorative layer and / or the application of a surface coating, for example, a paint, be provided.

Is appropriate For example, the painting of the wood veneer on his the soft Layer facing away from side to form a flexible and / or elastic protective layer that contributes to the movements of the wood veneer Pressure or contact without damage can follow and thus overall to the flexibility of the wood veneer decor contributes. Leaves a flexible finish For example, by using at least one varnish, which is also cured Condition is flexible and / or elastic, and / or a thin-layered Lacquers, in particular at least one oil-containing lacquer and / or 1K and / or 2K paint systems and / or PU paints and / or acrylic paints and / or shellacs.

The Invention will also be described below with regard to further features and Advantages based on the description of an embodiment and with reference explained in more detail on the accompanying schematic drawings. there demonstrate

1 in a schematic cross-sectional view of an embodiment of a molding according to the invention, and

2 in a schematic cross-sectional representation of a section of the decorative layer of the molding after 1 in an enlarged view.

1 shows a schematic cross-sectional view of an embodiment of a molded part according to the invention 10 , The molding 10 includes a decorative layer 11 on the side of the molded part provided as visible side in an installed state 10 , On the decorative layer 11 follows a soft layer 12 (or soft element or soft body or soft component), for example a foam layer (or foam element or foam body). To the soft layer 12 includes turn on the decorative layer 11 opposite side a hard carrier 14 made of plastic or hard foam, the fasteners 13 forms over which the molding 10 can be mounted in a vehicle interior as a decorative or trim part. The connection between soft layer 12 and carriers 14 can be done for example by an adhesive layer (not shown in the figures). In 1 is the thickness (or thickness) of the soft layer 12 greater than the thickness of the decorative layer 11 and also greater than the thickness of the carrier 14 , In the carrier 14 and / or in the soft layer 12 Furthermore, a ductile insert, for example made of metal, may be embedded (not shown in the figures).

2 shows the decorative layer 11 of the molding 10 out 1 in an enlarged, also schematic cross-sectional view. It becomes clear that the decorative layer 11 made of a composite material, namely of a layer composite material is formed. The decorative layer 10 includes on its provided in the installed state as a visible side a wood veneer 18 as a decorative layer. On the wood veneer 18 follows an adhesive layer 19 which is another location 20 that as the wood veneer 18 flexibilizing layer and designed as a diffusion-tight layer, permanently on the wood veneer 18 connects. This further location 20 adjoins the soft layer 12 at. It ensures sufficient flexibilization of the wood veneer 18 so that the wood veneer 18 on pressure on the visible surface, for example, when touched by a vehicle occupant, at the corresponding point yields and here in the printing area, the soft layer 12 compresses. When removing the external pressure take the wood veneer 18 and also the soft layer 12 restore their original shape, ie the molding 10 overall reacts elastically to pressure on the visible surface. The further location 20 prevents damage to the wood veneer during these movements 18 , in particular the formation of cracks or cracks in the wood veneer 18 , Furthermore, prevents the further situation 20 that the delicate wood veneer 18 is damaged during the production of the molding. Finally, the further location serves 20 also the connection between the decorative layer 11 and the soft layer 12 by, for example, in the formation of the soft layer 12 Foam or foam-forming material in the further position 20 penetrates.

Not shown in the figures is a flexible lacquer layer on the visible side of the molded part 10 on the wood veneer 18 is applied.

10

molding

11

decorative layer

12

soft layer

13

fastener

14

harder carrier

18

Wood veneer, decorative sheet

19

adhesive layer

20

Further location

Claims (13)

Molded part ( 10 ), in particular decorative part and / or trim part for a vehicle interior, comprising a decorative layer ( 11 ) and a hard carrier ( 14 ), wherein the decorative layer ( 11 ) a wood veneer ( 18 ) or a wood veneer ( 18 ) as a decorative layer, characterized in that between the decorative layer ( 11 ) and the carrier ( 14 ) a soft layer ( 13 ), the soft layer ( 13 ) is formed such that at an external pressure on the decorative layer ( 11 ) the underlying soft layer ( 12 ) and the decorative layer ( 11 ) into the soft layer ( 12 ) is pressed. Molding according to claim 1, characterized in that the soft layer ( 12 ) is elastic such that the soft layer ( 12 ) and the decorative layer ( 11 ) take back their original shape when the external pressure is removed. Molded part ( 10 ), in particular decorative part and / or trim part for a vehicle interior, in particular according to claim 1 or 2, comprising a decorative layer ( 11 ) and a hard carrier ( 14 ), wherein the decorative layer ( 11 ) a wood veneer ( 18 ) or a wood veneer ( 18 ) as a decorative layer, characterized in that between the decorative layer ( 11 ) and the carrier ( 14 ) a soft layer ( 12 ), the soft layer ( 12 ) has a thickness between 1 mm and 30 mm, in particular 5 mm to 20 mm, preferably about 10 mm. Molding according to one of the preceding claims, characterized in that the thickness of the soft layer ( 12 ) greater than the thickness of the decorative layer ( 11 ) is, in particular at least twice, preferably at least four times as large as the thickness of the decorative layer ( 11 ). Molding according to one of the preceding claims, characterized in that the thickness of the soft layer ( 12 ) greater than the thickness of the carrier ( 14 ) is, in particular at least twice, preferably at least four times as large as the di the carrier ( 14 ). Molding according to one of the preceding claims, characterized in that the soft layer ( 12 ) is or comprises a foam layer or a foamed layer, in particular formed from polyurethane foam and / or semi-rigid or soft integral foam, in each case preferably in open-cell or closed-cell form, and / or formed by back-foaming the decorative layer. Molding according to one of the preceding claims, characterized in that the decorative layer ( 11 ) at its the soft layer ( 12 ) facing side as a wood veneer flexibilizing and / or formed as a diffusion-tight layer further layer ( 20 ), in particular comprising or consisting of a flexible material, preferably a fiber-based mat, in particular a non-metallic mat or a textile mat or a prepreg mat, or a nonwoven layer or a film on plastic and / or fiber base or a leather layer or a Foam layer, preferably made of plastic foam, or a lacquer layer. Molding according to claim 7, characterized in that the further layer ( 20 ) with the wood veneer ( 18 ), in particular via an adhesive layer ( 19 ) to the wood veneer ( 18 ) is attached. Molding according to one of the preceding claims, characterized in that the wood veneer ( 18 ) at its the soft layer ( 12 ) facing away from a lacquer layer as a protective layer, which is fexibel and / or elastic. Molding according to claim 9, characterized that the flexible lacquer layer is a thin-layer lacquer layer, in particular, formed using at least one oily one Lacquers and / or 1K or 2K lacquer system during the production of the lacquer layer, preferably using at least one PU varnish and / or acrylic varnish and / or shellac. Molding according to claim 9 or 10, characterized that the flexible lacquer layer is formed using at least a paint in the production of the paint layer, which is also in the cured state flexible and / or elastic. Molding according to one of the preceding claims, characterized in that the support ( 14 ) is made of metal and / or plastic and / or rigid foam, or comprises metal and / or plastic and / or hard foam, in particular a thermoplastic or an elastomer or a thermosetting plastic, or / and that the carrier ( 14 ) one or more fasteners ( 13 ) for the attachment of the molding ( 10 ), in particular in a vehicle interior, has or forms, and / or that in and / or on the carrier ( 14 ) a ductile insert is provided, in particular a metal sheet, preferably of aluminum or steel, or a non-metallic mat, in particular a textile mat or a prepreg mat. Molding according to one of the preceding claims, characterized in that the soft layer ( 12 ) via an adhesive layer and / or during the formation of the soft layer ( 12 ) in the decorative layer ( 11 ) penetrated and / or to the decorative layer ( 11 ) affine tailed, the soft position ( 12 ) forming material, in particular foam, to the decorative layer ( 11 ), and / or that in the training of the soft situation ( 12 ) in the hard carrier ( 14 ) and / or to the hard carrier ( 14 ) affine, the soft position ( 12 ) forming material, in particular foam, to the hard carrier ( 14 ) is attached.