DE102013019334A1 - Decorative layer for a paneling part - Google Patents

Abstract

The present invention relates to a decorative layer for a trim part of a vehicle, comprising a composite body (1) consisting of at least two pieces of material (2, 2.1-2.7), wherein the pieces of material (2, 2.1-2.7) are arranged adjacent to each other, the together form a decorative surface (3), wherein the pieces of material (2, 2.1-2.7) have a deep structure (4), which is rough and / or porous, and a plastic matrix (5), at least two pieces of material (2, 2.1 -2.7) overlapping in the depth structure below the decorative surface (3) is embedded.

Description

Technical area

The present invention relates to a decorative layer of a composite body and an embedded plastic matrix for the decoration of interior trim parts of vehicles, in particular motor vehicles. Furthermore, the invention relates to a method for producing the decorative layer.

State of the art

In motor vehicles, it is desirable to provide interior trim parts for vehicles with a decorative layer to produce pleasing surfaces in addition to their functionality of the interior trim parts. This is intended above all to enhance the visual and haptic appearance of the interior fittings of the passenger compartment and, secondly, to increase the individual design possibilities of the passenger compartment of vehicles. Especially for vehicles in the upper price segment, the customization of interior trim parts is becoming increasingly important.

The DE 10 2009 026 537 discloses a decorative material and a method of making the same consisting of a composite material of a plurality of assembled pieces of material. This composite material is laminated here, for example, on the carrier layer of the interior trim part. However, the use of such a composite material has the disadvantage that the joints between the pieces of material provide only little support and thus easily break or tear. This has a particularly detrimental effect on the processing options, which must be kept very low, for example, by the stresses of the material during processing. The use of said decorative material in interior components with very narrow radii, for example at edge regions, is also not possible because the decorative material breaks through its rather brittle behavior in the edge region. Furthermore, the processing options are limited by the low tensile strength, since at too high a tensile load, the pieces of material from each other and thus tear the entire decorative material.

Description of the invention

It is therefore the object of the present invention to provide a decorative layer and a method for its production, which allows a high degree of individualization with respect to their design and at the same time does not have the deficiencies mentioned in the prior art with respect to the application and processing options.

The object of the invention is achieved by a decorative layer and a method for their preparation with the features of claims 1 and 11. Further preferred embodiments of the invention are presented in the subclaims.

A decorative layer according to the invention for an interior trim part of a vehicle, preferably a motor vehicle, has a composite body which consists of at least two pieces of material. The pieces of material are in this case arranged adjacent to each other, so that the pieces of material form a plane. At least one side of the plane represents the decorative surface, which remains visible to the vehicle occupant even after application or lamination to an interior trim part of a vehicle. The pieces of material have, compared to their propagation in the plane only an extremely small thickness, which extends substantially perpendicular to the plane. Furthermore, the pieces of material have a rough and / or porous depth structure. In the deep structure of the pieces of material below the decorative surface over at least two pieces of material, preferably over the entire composite body, a plastic matrix is incorporated.

Since the plastic matrix not only intercalates between the adjoining pieces of material, but also superimposes flat in the depth structure of several pieces of material, the plastic matrix forms a positive structure, which passes through the pieces of material and thus firmly connects the pieces of material together. At the same time, the plastic matrix increases the flexibility of the decorative layer. Furthermore, the plastic matrix embedded in the deep structure provides a completely closed decorative layer which is both foamable and vacuum-capable. In addition, the shrinkage and expansion behavior is homogenized and reduced by temperature fluctuations of the decorative layer by the embedded plastic matrix.

This has an advantageous effect on the processing, since the risk of breakage or cracking of pieces of material during processing is reduced, in particular, when the composite body is composed of pieces of material which differ in their materials. In addition, it has been found that the decorative layer according to the invention can be sewn with further decorative layers. Another advantage can be seen in the storage and transport of the decorative layer according to the invention. Due to the homogeneous flexibility, the decorative layer can be produced as a roll product. This allows easier storage and easier transport, as well as improved feeding of the decorative layer to further processing steps.

However, the plastic matrix is embedded in such a way in the depth structure of the pieces of material that this is neither visually perceptible on the visible side of the decorative layer perceptible.

By "depth structure" is meant here the structure of the surface and the structure of the lying below the surface, ie in the interior of the material pieces areas. Furthermore, in this context, "porous" means a structure which is characterized by a large number of pores, capillaries and cavities. This may also be understood braids or fleeces of fibers, as forming between the fibers and braids comparable cavities. Under "rough" unevenness in the surfaces of the pores and the surfaces of the pieces of material itself are still understood.

The rough and porous depth structure can be realized for example by materials that have a porous structure. Here, mesoporous pore sizes in the range of 2 to 50 nanometers and macroporous pore sizes greater than 50 nanometers are advantageous, which extend over the entire cross section of the material. Representatives of these materials are, for example, leather, in particular leather fibers, textile, nonwoven, wood, cellulose, cork, natural fiber materials such as sisal, kenaf or flax, natural fiber composites, such as natural fiber thermosets or porous metals are particularly suitable for use as pieces of material within the composite body. However, it is also possible a combination of different materials.

Since it is possible despite the incorporation of the plastic in the depth structure that plastic residues remain on the surface, the plastic matrix is preferably made of a transparent or translucent plastic, so that the possible deposits on the surface of the decorative layer are optically impossible or very difficult to perceive.

Preferably, the plastic matrix at least partially fillers, in particular fiber components, which increase the stability, in particular the tensile strength of the entire decorative layer after storage in the composite bodies.

During the laminating process, decorative layers are stretched as tightly as possible before they are applied to the corresponding carrier layers of the interior trim parts in order to avoid wrinkling. By containing in the plastic matrix fillers, which are distributed by the surface storage over the entire decorative layer according to the invention, for example, the tensile strength of the composite can be increased and homogenized so far that a sliding or breaking the joints of the pieces of material during the processing process is prevented. As fillers, for example, glass fibers, aramid fibers or carbon black can be used.

Preferably, the plastic matrix consists of a thermoplastic material such as PET, PC, PA, PMMA, PUR, PP, TPU or silicone, since it has proved to be advantageous to store the plastic matrix by melting in the depth structure. Furthermore, areas in which the plastic matrix has not been sufficiently stored in the plastic matrix, can be post-processed, since the melting process is reversible in thermoplastics.

The plastic matrix may further consist of an elastomer or a plastic with comparable elastic behavior. Due to the surface overlapping storage of the plastic matrix in the composite body so a homogenization of the entire composite body in terms of its elasticity is possible, thereby fractures, delaminations or Faserausrisse during the laminating due to differences in the elastic behavior of the individual pieces of material of the composite prevents and thus the application also in very sharp-edged interior fittings allowed. For this purpose, the plastic matrix may have a multilayer structure.

Particularly preferably, the plastic matrix contains a thermoplastic elastomer, which allows both a repeated treatment described above multiple times, as well as the corresponding elastic behavior has, which is needed especially in the processing of the decorative layer.

In order to realize a uniform and homogeneous incorporation of the plastic matrix into the composite body, the plastic matrix preferably consists of a thin-film foil having a homogeneous thickness over its entire surface. The thin-film foil in this case preferably has a thickness of 10 to 250 micrometers. Alternatively, however, the plastic matrix can also consist of a powder, in particular a hotmelt powder.

Preferably, the plastic matrix has a thickness which is smaller than the thickness of the pieces of material, since otherwise there is a risk that the plastic matrix is not completely embedded in the composite body and thus remains visible and on the other hand, the flexibility of the decorative layer is restricted perpendicular to the propagation plane with increasing total thickness of the decorative layer.

In a further preferred embodiment of the invention, the composite body has an additional perforation, which additionally increases the porosity of the deep structure of the material pieces and supports the incorporation of the plastic matrix. The term "perforation" is to be understood here as the presence of several openings, it being expressly pointed out that the openings do not have to completely penetrate the layer. Openings, which are introduced only to a certain depth, in particular blind openings, are "perforations". Preferably, the additional perforation has such small hole diameters that the perforation area for a passenger at the usual distance to interior trim parts in the vehicle interior is not or hardly distinguishable from a non-perforated area of the same surface. Due to the additional perforation materials can be used in the composite body, which only have a low depth structure, which is not sufficient in itself to be able to store the plastic matrix can. Furthermore, it is also possible to perforate materials which already have a pronounced depth structure in order to further improve the incorporation of the plastic matrix. The perforation can in this case for example be introduced via needles or by means of laser either over the entire surface or only partially over the composite body.

Preferably, the pieces of material have a thickness of 0.05 to 2 millimeters, more preferably 0.2 to 0.7 millimeters. Such a configuration of the pieces of material is particularly advantageous because the plastic matrix can be stored deep enough in the depth structure to connect the pieces of material positively and firmly together. Furthermore, the flexibility of the decorative layer is not adversely affected by the thickness of the pieces of material. Particularly preferably, the thickness of the pieces of material over the entire decorative layer is the same.

A method for producing a decorative layer according to the invention consisting of a composite body comprises the following steps: joining at least two pieces of material, preferably from a rough and / or porous depth structure to a block of material, separating at least one composite from the block of material so that the composite body at least two pieces of material includes a subsequent application of a plastic matrix to the composite body, wherein the plastic matrix is preferably applied uniformly and over the entire surface of the composite body and incorporating the plastic matrix in the depth structure of the pieces of material of the composite body. The plastic matrix may be introduced either on the visible side of the composite or on the opposite side. However, it is also possible to store the plastic matrix on both sides of the composite body. The plastic matrix can be applied as a flat layer over the entire composite body. Alternatively, however, it is also possible to apply the plastic matrix through several layers. These can overlap here. In this case, the layers combine during the storage process to a homogeneous plastic matrix.

In one embodiment of the method according to the invention, the composite body is broken immediately after the separation and before the application and storage of the plastic matrix. Especially when using very brittle materials, the overall flexibility of the decorative layer can be significantly increased. By the subsequent application and storage of the plastic matrix, the individual fragments of the materials are again positively connected with each other.

In a further embodiment of the method according to the invention, the composite body is perforated after separation. The perforation can be introduced, for example via a laser. But there are also other perforation methods such as needles possible. In this case, either the entire surface of the composite body or only individual areas can be perforated. However, it is also possible to limit the perforation method to individual pieces of material in order to compensate for differences in the depth structure of the individual pieces of material. The perforation process can be further performed from both sides of the composite body. Alternatively, it is also possible to increase the depth structure and in particular the porosity of the surfaces of the composite body by roughening the surfaces. This can be done for example by a grinding process.

In a particular embodiment of the method according to the invention, the decorative layer on the non-visible side of the composite body has a stabilizing layer, which is applied after the composite body is separated from the material block. In this case, the stabilization layer can be designed so that a plurality of composite bodies can be applied next to one another on a stabilizing layer. The storage of the plastic matrix can take place both before and after the application of the stabilizing layer. The stabilizing layer allows better processability, especially when the decorative layer is supplied as a roll goods to the processing process. As in this case the decorative layer of the Roll is pulled off, can strongly fluctuating tensile loads act on the material, which can lead to breakage or cracking of the material. The stabilization layer may be, for example, a plastic film or an adhesive tape. Preferably, the stabilization layer is removed before application, for example, to an interior trim part of a vehicle.

In a further embodiment of the method for producing a decorative layer according to the invention, the composite body is preheated before the application of the plastic matrix. If the composite body contains pieces of material from a natural fiber composite material, thus the plastic contained therein is melted. The plastic thus combines with the adjacent fibers and thus improves, above all, the elongation at break of the natural fiber composite material.

In one embodiment of the method for producing a decorative layer according to the invention, the plastic matrix is heated after the application of the plastic matrix to the composite body. In this case, the plastic matrix is preferably a thermoplastic, so that the plastic matrix melts and due to the decreasing viscosity, the melt sinks into the deep structure of the pieces of material of the composite body. The necessary energy for heat generation can be provided, for example, via microwaves, infrared waves or through acted upon hot air.

In a further embodiment of the method for producing a decorative layer according to the invention, after the application of the plastic matrix to the composite body, the plastic matrix is embedded in the deep structure of the composite body by a pressing process. For this purpose, after the application of the plastic matrix, the composite body can be introduced, for example, into a commercially available press or a roller which, by compressing the composite body with the plastic matrix, introduces the plastic matrix into the deep structure of the composite body. Such a pressing process can be carried out continuously during the introduction of the composite body as a roll product or discontinuously during the introduction of piece goods.

In a particularly preferred embodiment of the production method according to the invention, the incorporation of the plastic matrix takes place by a combination of heating and pressing in the plastic matrix. Here, the heating can either be done before pressing or during the pressing process.

In a further embodiment, the incorporation of the plastic matrix takes place via a needle method. After application of the plastic matrix, the composite body is pierced with fine needles. In this case, the needles transport parts of the plastic matrix from the surface into the deep structure of the composite, so that the composite body is penetrated by the plastic matrix. Preferably, the plastic matrix in this case consists of plastic fibers. In order to additionally increase the bonding effect of the plastic matrix, the decorative layer can then be briefly heated, so that the plastic matrix partially melts and thus bonds better with the composite body.

Although the invention has been explained with reference to the application of an interior trim part for a motor vehicle, it is understood that the invention can be implemented in other areas, for example in the transport sector in general, in particular aviation and shipping, or in furniture. However, the present invention is particularly suitable for automotive interiors.

Short description of the figures

1 shows the visible side of a decorative layer according to the invention.

2 shows a portion A of the decorative layer of the invention 1 in an enlarged three-dimensional view.

3 shows a decorative layer according to the invention in a three-dimensional view.

4 to 6 show schematically the production process of a decorative layer according to the invention.

The 1 represents a frontal view on a decorative surface 3 a decorative layer according to the invention. The decorative layer here consists of a substantially rectangular composite body 1 Made of a variety of pieces of material 2.1 - 2.7 put together. The pieces of material 2.1 - 2.7 are cuboid or rhombic and differ in their materials and / or in their orientation. So there is a first group of pieces of material 2.1 from Kenaf, with a second set of pieces of material 2.2 is arranged alternately and in parallel, wherein the second group of pieces of material 2.2 made of cork. This is followed by a third group of pieces of material 2.3 made of a long-grain leather, whereby the length of the individual pieces of material 2.3 shortened such that a diagonal impact is formed, on which a fourth group of pieces of material from a porous Aluminum foam is arranged. On both sides of the diagonal pieces of material 2.4 is a fifth and sixth group of pieces of material 2.5 . 2.6 from Kenaf, with the groups at 90 degrees to each other. To the sixth group of pieces of material 2.5 joins a seventh group of pieces of material 2.7 made of long-fiber leather. Through the use of different materials, in addition to the optical properties of the decorative layer and the tactile impression of the decorative surface 3 very variable ausgestaltbar. For example, leather materials produce a rather soft and natural fibers, however, a rough and brittle tactile impression. Through a combination of different materials, it is possible to combine several sensible impressions in a decorative layer, which additionally increases the perceived by the passenger valency of the decorative layer. True, are in 1 the pieces of material 2 always arranged linearly, but it is also possible the pieces of material 2 non-linear, for example in the form of circles to arrange.

In 2 is the section A from the in 1 illustrated decorative layer shown in two enlarged views. The pieces of material 2 . 2.1 . 2.2 of the composite body 1 have a deep structure 4 on, which permeates the material and thus also within the material pieces 2 . 2.1 . 2.2 Cavities are formed. Into the deep structure 4 the pieces of material 2 is a plastic matrix 5 made of a transparent polypropylene over the material pieces 2 . 2.1 . 2.2 stored away, so that the plastic matrix 5 also between the pieces of material 2 . 2.1 . 2.2 stored in the interstices. It has been shown that a cuboid, rhombic, or cylindrical patterns cylindrical shape of the pieces of material 2 . 2.1 . 2.2 for the production of a composite body according to the invention 1 is particularly suitable because the adjoining surfaces of the pieces of material are correspondingly large and directly opposite. This favors the connection of the individual pieces of material 2 . 2.1 . 2.2 using the plastic matrix 5 additionally.

The plastic matrix 5 is about 0.2 mm embedded in the pieces of material, with the pieces of material 2 . 2.1 . 2.2 have a thickness of about 0.3 mm. The optical and tactile impression of the composite body is thus not through the plastic matrix 5 affected. Through the plastic matrix 5 made of polypropylene, the pieces of material 2 . 2.1 . 2.2 on the one hand firmly and positively connected with each other and on the other hand, the decorative layer is very flexible despite the different materials and has only a low inherent rigidity.

The deep structure 4 the pieces of material 2.1 from Kenaf is mainly composed by the spaces between the individual fibers, the depth structure 4 the pieces of material 2.2 made of cork by the natural porous structure of the cork. Because the pieces of material 2.2 cork a much finer depth structure 4 as the pieces of material 2.1 from Kenaf own and thus the plastic matrix 5 stored much worse, was in the pieces of material 2.2 made of cork a perforation 7 brought in. By depth, diameter and number of perforations 7 so can differences in the depth structure 4 , due to the different materials, compensate. To avoid getting the plastic matrix 5 on the decor surface 3 appears, penetrates the perforation 7 the pieces of material 2.2 not completely. The decor surface 3 stays away from the plastic matrix 5 completely untouched, so that on the one hand the visual impression of the individual pieces of material 2 . 2.1 . 2.2 not by deposits of the plastic matrix 5 on the other hand, the natural feel of the pieces of material 2 . 2.1 . 2.2 preserved.

Although in the illustrated figures as possible a gap-free arrangement of the pieces of material 2 . 2.1 . 2.2 is shown to each other, it is also possible that a desired gap, for example, of 1 mm, between two pieces of material 2 preserved. This gap can be introduced, for example, by a thick adhesive layer. In this case, the adhesive layer itself constitutes part of the visible surface and may be colored for this purpose. Alternatively, the gap can also be created by the decorative layer of two composite bodies 1 is produced, which are arranged side by side with a defined distance. In this case, when storing the plastic matrix 5 more material used in the gap area, leaving the plastic matrix 5 fills the gap and both composite bodies 1 connects with each other. In this case, the plastic matrix itself becomes part of the visual impression of the decorative layer. For this purpose, the plastic matrix 5 be colored.

In 3 is a three-dimensional view of the embodiment of the decorative layer of the invention 1 shown, the decorative surface 3 facing the viewer. About the side, the decor surface 3 is opposite, is a plastic matrix 5 made of polypropylene stored on the decorative surface 3 neither visible nor palpable. Through the plastic matrix 5 However, a firm connection between the pieces of material 2.1 - 2.7 generates that the composite body 1 holds together. At the same time the plastic matrix homogenizes 5 the composite body 1 in its flexibility. This improves especially the handling of the decorative layer during further processing.

Especially in subsequent laminating processes tensile and compressive forces can be both perpendicular and parallel to the decorative surface 3 Act. Here are the areas between the pieces of material 2.1 - 2.7 sensitive vulnerabilities which can tear or break the decorative layer, since the materials of the pieces of material 2.1 - 2.7 clearly differ in their mechanical properties and thus stresses between the pieces of material 2.1 - 2.7 can arise. Through the plastic matrix 5 these differences are compensated to the extent that the decorative layer in its entirety has a homogeneous behavior, especially in terms of their stiffness and their flexibility.

Furthermore, the orientation of the pieces of material 2.1 - 2.7 thus irrelevant to each other. In the arrangement of the pieces of material 2.1 - 2.7 The geometry of the component to which the decorative layer is to be applied later, must not be taken into account, so that the arrangement of the pieces of material 2.1 to each other freely selectable. In the in 3 shown embodiment of the invention, for example, the sixth group of pieces of material 2.6 and the seventh group of pieces of material 2.7 a position angle of 90 degrees to each other.

Furthermore, the decorative layer is flexibilized in its longitudinal extent, so that the decorative layer can be stored and transported in the form of rolls. The decorative layer can in this case be fed directly from the roll to further processing stations.

In the 4 to 6 schematically the process steps for producing a decorative layer according to the invention are shown. In the first step of the manufacturing process are several layers of material 9 to a block of material 10 put together. 4 shows a block of material 10 from a plurality of material layers 9 of leather. The leather layers 9 are prefixed in the embodiment shown by an adhesive, so that slippage of the individual leather layers 9 during the creation of the material block 10 is prevented. The shape of the block of material 10 in 4 is cubic. A cubic shape as a special form of a cuboid represents a particularly advantageous form of the material block 10 Because of this, a plurality of individual composite bodies with a defined, in particular rectangular or square and at least for the majority of the composite body of the same size can be separated. Although in the embodiment shown here, the material layers 9 have a constant thickness, it is also possible that the thickness of the material layers 9 varied. This thickness variation can either refer to the fact that one or more material layers have a homogeneous thickness over their entire propagation area, but in comparison to other material layers 9 differ in their thickness. However, it is also possible that the thickness within a material layer 9 can vary. This can be done, for example, in the leather materials by sharpening. Thus, due to the discontinuous regularity and the resulting thickness variations of the material layers arranged one on the other 9 an additional optical effect can be generated.

Furthermore, two preferred cutting planes 11 . 12 indicated along which a composite body 1 from the block of material 10 can be separated. Especially with a block of material 10 the of material layers 9 exists, which differ in their thickness to each other, can be created by different cutting planes new decor patterns. However, the cutting planes shown in this figure are merely exemplary in nature and can be arbitrarily rotated and reshaped. So on the one hand, the way of joining in the sense of a sequence and material selection of the pieces of material 2 , or on the other hand, the orientation and shape of the cutting plane 11 . 12 , along the one or more composite bodies 1 from the block of material 10 be separated, be varied. So it is possible from a variety of different material layers 9 several composite bodies 1 to produce, each of which is different from each other. This makes it possible to produce a particularly efficient production of individual or quasi-individual composite bodies which can decorate a surface, for example in a motor vehicle.

5 shows a composite body 1 that made the material block 10 out 1 by cutting along the cutting plane 11 in 4 was generated. The composite body 1 includes a plurality of pieces of material 2 that the pieces of material 9 out 1 correspond. By cutting along the cutting plane 11 in 4 was from the pieces of material 9 , which are each layers of leather, a corresponding compilation of individual strips of pieces of material 2 from the material of the leather layers 9 of the material block 10 generated. A cut along the cutting plane 12 in 4 would have a correspondingly different composite body 1 result.

One of the pieces of material 2 is after separating the pieces of material 2 from in 4 shown material block 10 with a perforation 7 been provided to the depth structure of the piece of material 2 artificially increase. The representation of the perforation 7 However, this is purely exemplary, since the perforation 7 not on a piece of material 2 must limit. It is also possible to either have several pieces of material 2 or the entire composite body 1 to be provided with a perforation. This can be the perforation 7 , although flat over several pieces of material 2 or the entire composite body 1 introduced, depending on the type and material of the individual pieces of material 2 differ in penetration depth, number and diameter. Thus, a very homogeneous depth structure over the entire composite body 1 ensured. Unless the pieces of material 2 even having a sufficient depth structure may as well rely entirely on perforation 7 be waived.

6 represents a possible variant for storing the plastic matrix 5 in the composite body 1 This is a tool 13 made available, consisting of two mold halves 14 . 15 put together. The lower half of the mold 15 is shaped so that within the tool half 15 a recess 20 forms into which a media derivation 19 empties. Within this recess 20 there is a perforated support plate 16 on which the composite body 1 is arranged. Furthermore, a plastic matrix to be stored is on the composite body 5 flat over the composite body 1 applied. In the present embodiment, the plastic matrix is 5 around a 200 micron thick thin film foil 6 made of polypropylene. The upper tool half 14 closes the tool 13 is airtight to the outside and is shaped so that over the composite body 1 a cavity 18 formed. The upper mold half also contains media feeds 17 via which a medium can be introduced into the cavity.

For storage of the thin-film foil 6 in the composite body 1 is via the media feeds 17 hot air with a temperature of about 150-250 degrees Celsius in the recess 18 the first tool half 14 initiated. Because the vacuum press 13 is completely leakproof to the outside, increases the atmospheric pressure within the recess 18 , Furthermore, the thin film is caused by the hot air 6 so far heated that this melts. Parallel to the introduction of hot air into the recess 18 the first tool half 14 is about the media derivation 19 in the recess 20 evacuated air, leaving a negative pressure in the recess 20 arises. As the carrier plate 16 is perforated, the molten thin-film foil by the overpressure in the recess 18 the upper half of the mold 14 and the negative pressure of the recess 20 the lower half of the mold 15 in the composite body 1 pressed.

By this type of storage of thin film 6 in the composite body 1 it is ensured that the thin-film foil 6 in the composite body 1 on the one hand homogeneously and on the other hand stores in sufficient depth. Thus, it avoids variations in the thickness of the composite body 1 due to a different storage of the thin-film foil 6 occur in the composite bodies. It also ensures that the thin-film foil 6 stored far enough to ensure a secure connection between the pieces of material and at the same time increase or homogenize the flexibility of the composite.

Because of the insertion process shown no mechanical stress on the composite body 1 During storage, the structure of the composite remains 1 largely unchanged, giving the optical and haptic impression of the composite body 1 especially on the side opposite the side over the plastic matrix 5 is stored and usually the decorative surface, remains unchanged.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• DE 102009026537 [0003]

Claims (19)

Decorative layer for a trim part of a vehicle, comprising: a composite body ( 1 ), consisting of: - at least two pieces of material ( 2 . 2.1 - 2.7 ), - the pieces of material ( 2 . 2.1 - 2.7 ) are arranged adjacent to each other, - which together form a decorative surface ( 3 ), the pieces of material ( 2 . 2.1 - 2.7 ) a deep structure ( 4 ), which is formed rough and / or porous, and a plastic matrix ( 5 ), which: - at least two pieces of material ( 2 . 2.1 - 2.7 ) across the depth structure below the decorative surface ( 3 ) is stored. Decorative layer according to claim 1, characterized in that the plastic matrix ( 5 ) consists of a transparent or translucent material. Decorative layer according to one of the preceding claims, characterized in that the plastic matrix ( 5 ) contains at least fillers. Decorative layer according to one of the preceding claims, characterized in that the plastic matrix ( 5 ) consists of a thermoplastic material. Decorative layer according to one of the preceding claims, characterized in that the plastic matrix ( 5 ) consists of an elastically deformable material. Decorative layer according to one of the preceding claims, characterized in that the plastic matrix ( 5 ) from a thin-film foil ( 6 ) consists. Decorative layer according to claim 6, characterized in that the thin-film foil ( 6 ) has a thickness of 10 to 250 microns. Decorative layer according to one of the preceding claims, characterized in that the plastic matrix ( 5 ) a smaller thickness compared to the thickness of the composite body ( 1 ) having. Decorative layer according to one of the preceding claims, characterized in that at least one piece of material ( 2 . 2.1 - 2.7 ) an additional perforation ( 7 ) having. Decorative layer according to one of the preceding claims, characterized in that the pieces of material ( 2 . 2.1 - 2.7 ) of the composite body ( 1 ) have a depth of 0.05 mm to 2 mm, preferably between 0.2 mm to 0.7 mm. Method for producing a decorative layer comprising the following steps: - combining at least two layers of material ( 9 ) to a material block ( 10 ), - separating at least one composite body ( 1 ) of the material block ( 9 ), so that the composite body ( 1 ) at least two pieces of material ( 2 . 2.1 - 2.7 ), - surface application of a plastic matrix ( 5 ) on the composite body ( 1 ), - storing the plastic matrix ( 5 ) into the deep structure ( 4 ) of the composite body ( 1 ). A method according to claim 12, characterized in that after the separation and before the surface storage of the plastic matrix ( 5 ) the composite body ( 1 ) is broken. Method according to claim 12, characterized in that the composite body ( 1 ) before the planar storage of the plastic matrix ( 5 ) is perforated. Method according to claim 12, characterized in that on the side of the composite body ( 1 ), which is opposite to the side over which the storage of the plastic matrix ( 5 ), a stabilizing layer is applied. A method according to claim 15, characterized in that the stabilizing layer after storage of the plastic matrix ( 5 ) of the composite body ( 1 ) is replaced. A method according to claim 12, characterized in that the storage of the plastic matrix ( 5 ) is carried out by heating. A method according to claim 12, characterized in that the storage of the plastic matrix ( 5 ) by means of pressing. A method according to claim 12, characterized in that the storage of the plastic matrix ( 5 ) by means of a combination of heating and pressing. A method according to claim 12, characterized in that the storage of the plastic matrix ( 5 ) with the help of needles.

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