DE102005007198B3 - Casting of multi-colored polyurethane shell, e.g. for backing with rigid foam for automobile trim components, involves a tool with a sealing slide for successive casting of different colors - Google Patents

Abstract

The tool has a base (1) and a matching first slide (2), which together with a slide (3) that seals against a smooth region (50) forms the mold cavity for the first color. After the first color has set, a second slide (4) forms the mold cavity for casting the adjoining second color. The sealing region (50) can be on a projecting bead (14) or it can be on a flat surface region of the base (1). The tool slides can be moved hydraulically, pneumatically or with servo-motors. Independent claims are included for the following: (1) A process for casting a two-color shell with a flat surface in this way; (2) A process for casting a three-color shell in which, in a third operation, the sealing slide (3) is replaced by a third matching slide to form a third mold cavity between the initial two colors; (3) A process for a three-color shell in which the third color is cast into the gap left by the sealing slide.

Description

The The invention relates to an apparatus and a method for the production multicolored cast skins.

The The present invention is in the field of interior trim manufacturing for motor vehicles. Parts of this interior trim are instrument panels and door panels, Wall parts, console parts, headliner, etc .. It affects in particular Tools and methods for producing an impeccable decorative face and surface of this usually three-dimensionally designed interior trim parts.

Typically, such trim parts are constructed as in the German utility model DE 201 00 506 U1 described in more detail. They then comprise a decorative layer with underlying foam layer, usually made of polyurethane foam, which in turn sits on a dimensionally stable injection-molded support layer.

in the The prior art accommodates the aforementioned three-dimensional decorative surfaces Using tools made using the negative mold of the surface in the form the desired shape. There are techniques for a long time used in which either heats a decor-forming film, or a powder finely divided into the negative mold and thermally is melted, so that a smooth, wrinkle-free surface is formed. This is relatively expensive and the light resistance the decorative layer is not always satisfactory Next will be spraying techniques with lightfast, sprayable material used, but have the disadvantage, especially in tight Room corners of the negative mold do not form a uniform layer thickness can. This creates irregularities the layer thickness of the surface, which can be up to 4 mm in tight corners at approx. 1 mm nominal thickness. This is usually not tolerate and often requires disadvantageously a separate material for the decor surface, that differs from that of the underlying foam.

Because of the simplicity of the manufacturing process, as well as a good durability and recycling ability of the layer structure one strives to make the decor surface the same or a chemically similar one Material such as the underlying polyurethane foam layer manufacture. This top layer must be lightfast. At the same time one strives to get a uniform layer thickness.

This offers the casting skin also known in the art. It allows one very precise adjustable layer thickness, since a casting cavity by means of a corresponding precisely adjustable Tool - a Upper tool and a lower tool - is made, then by means of a relatively fluid, lightfast polyurethane is poured, which cures in the mold.

Unfortunately, all of the aforementioned techniques have considerable disadvantages if the visible surface is to be designed in multiple colors and if different, colored areas of the surface are to be sharply demarcated for the observer:
In Lacksprühtechnik a great effort must be operated to apply lightfast, colored paints of different colors to the negative mold. To do so, according to DE 39 11 485 C1 Stencils that are difficult to handle and precise color separation is technically very difficult and cumbersome to achieve.

In The injection molding technique is the multicolored representation with a Lower tool and two upper tools, with the seal between the different color components on a smooth area or even on the first applied color component. It is a separation gap of 0.02 to 0.05 millimeters possible.

With Help of casting skin technique can So far, no multicolored cast skins with optically sharply defined and predefined contour line as delimitation between two different colored casting skin components be prepared because the casting fluids are so fluid, that the separating contour between two differently colored areas the casting skin gets dirty. The cause of this lies in the fact that movable gate valves do not close tight enough to to be used on the visible side. When using Locking slides are created in the color separation so-called "flits", ie shoots the casting liquid into small gaps between the slide and the mold, which you could at best on the back side the casting skin, but not on their visual side "visually accept" could.

It is therefore an object of the present invention, a method and to provide suitable tooling devices with which such, colored sharp demarcated, multicolored casting skins can be produced.

ADVANTAGES OF THE INVENTION

These The object is achieved by a device having the features of the claim 1 and method with the features of claims 5, 7 or 8 solved.

In referring back to it dependent claims find advantageous developments and improvements of Invention.

In a brief summary, the casting skin is produced with a tool consisting of a base tool part and - depending on the number of colors to be displayed - at least two, see 8th , or other tool parts that form the opposite side for the base tool part. The process is carried out either in sections, separated by color components, whereby one casting skin component is produced after the other per color component, which meet each other in shock and impact and form a one-piece cast skin after curing of the last. It can also be applied so that two casting cavities can be filled at the same time by a sealing tool on the base tool part is seated, which seals at two sides simultaneously shaping, see. 5 ,

One Sealing tool part can according to embodiment separately for each demarcation line between two color areas should be provided. It pushes sealing for the casting liquid on a smooth, non-grained area or web of the base tool part, or if it is the end product from an aesthetic point of view allowed on a non-protruding area in the base tool part. The contact surfaces between web and sealing tool are so smooth according to the invention honed that succeeds, a line-like, flawless dividing line to create. This sealing measure prevents casting liquid, which necessarily in this process and the often finely structured and leathery grained surfaces in very low viscous, low viscosity state must be used in an area of the shape of the base tool part flows, actually for one other color component should be reserved. This creates the visible surface the finished casting skin with an immaculate, sharp dividing line between two color areas.

• a) ein das Negativ der Sichtseite bildendes Basiswerkzeugteil mit einem entlang der Abgrenzkonturlinie verlaufenden Bereich mit glatter Oberfläche,
• b) ein das Negativ der Rückseite der ersten Komponente bildendes Gegenwerkzeugteil und
• c) ein Abdichtwerkzeugteil, das sich auf dem Basiswerkzeugteil entlang des glatten Bereichs mit einem voreingestellten Pressdruck abdichtend abstützen kann,
• d) ein das Negativ der Rückseite der zweiten Komponente bildendes Gegenwerkzeugteil,
• e) ein Verfahrsystem, das die vorgenannten Werkzeugteile von Sichtseite oder Rückseite mit Hilfe einer Führungseinrichtung zumindest in eine relativ zueinander definierte offene Stellung und in eine geschlossene Stellung verfahren kann, wobei in der geschlossenen Stellung mittels einer Verblockungseinrichtung ein vordefinierter Abstand zwischen Basiswerkzeugteil und einem jeweiligen Gegenwerkzeugteil einstellbar ist und das Abdichtwerkzeugteil gleichzeitig mit einem vorgebbaren Druck auf den glatten Bereich des Basiswerkzeugteils drückt.

In accordance with a general aspect of the present invention, there is disclosed an apparatus for producing multicolored cast skins having a textured, non-smooth, grained, viewing side and a back side for the viewer; it is adapted to use hardenable pouring liquids to produce a visible on the visible side, spatially sharp dividing line between two cast skin components of different colors along a contour line; the device contains for it:

• a) a negative side of the forming base tool part with a running along the Abgrenzkonturlinie area with a smooth surface,
• b) a negative of the back of the first component forming counter-tool part and
• c) a sealing tool part which can be sealingly supported on the base tool part along the smooth portion with a preset pressing pressure,
• d) a counter-tool part forming the negative of the rear side of the second component,
• e) a movement system, which can move the aforementioned tool parts from the visible side or rear side by means of a guide device at least in a relatively defined open position and in a closed position, wherein in the closed position by means of a Verblockungseinrichtung a predefined distance between the base tool part and a respective counter-tool part is adjustable and presses the Abdichtwerkzeugteil simultaneously with a predetermined pressure on the smooth portion of the base tool part.

Of the smooth area can also be provided on a bridge, which in the finished Trim part generates a corresponding groove trench to the dividing line to design. Appropriate to the above, device-related Aspect of the invention is disclosed a method for the production multicolored cast skins with a structured, for the viewer non-smooth, grained visual side and a back, by means of hardenable casting fluids, wherein at least on the visible side a spatially sharply demarcated separation between two cast skin components different colors along the contour line is to be achieved.

The corresponding inventive device is essentially by the above combination and the Interplay of sealing tool part and web or non-standing, smooth Area, which is provided once per color separation line are.

In Preferably, the web is integral with the base tool part Made of stainless steel, or, especially for smaller ones Series, of other metals, such as aluminum, or off a harder one Made of plastic. The sealing tool part is also special for the production larger series made of stainless steel. Their engaging surfaces are where appropriate to each other, for example, by a mutual Ground flat grinding that gives a high smoothness that Ensures tightness.

The production of the sealing connection between Abdichtwerkzeugteil and base tool part is preferably done by the one part is moved against the other and by first guides are provided at a further distance of the closed-end position. These guides are getting more and more precise regarding both the situation and the situation angular orientation of the two parts to each other, the closer the target position of the closed position moves. In this position, precisely machined, preferably from all four sides coming locks for the moving parts or parts are provided, as are known in the art in systems with precise tool guide.

Of the Pressure on the sealing surface between sealing tool part and base tool part should be high enough be to create a seal. At meeting, smooth polished stainless steel surfaces should he have about one value - ever after used material - from 1 to 300 bar.

When Materials for the cast skin production come flexible polyurethane (PUR) materials as well as elastomers and mixtures in question, which are thin in the processing and can harden. The Connection of the materials to the casting skin should be chemical in nature so that no further material is at the interface.

By the illustrated tool technology and process technology it is possible multicolor Casting skins without make previous painting of the mold. The materials must therefore Be UV stable or later be provided with appropriate protection.

In order to can Covering parts for be made a vehicle interior, where the visible side through a multicolored casting skin is formed, with a present on the visible side, spatially very sharply demarcated separation between two cast skin components of different colors is provided along a contour line. This sharp demarcation is formed by a sharply demarcated transitional area having a width less than 0.8 mm, preferably less than 0.5 mm, more preferably less than 0.3 millimeters, and most preferably less as 3-5 owns one hundredth of a millimeter. This will be a sharp separation achieved in the same time the seal is made.

The The boundary contour line between two colors can also be used as an independent casting skin component made with own or already existing in the casting skin color be.

DRAWINGS

embodiments The invention is illustrated in the drawings and in the following Description closer explained.

1 shows in a preferred embodiment in a sectional view of the essential for the invention areas of the tool in the immediate vicinity of the boundary dividing line between two Gießhautkomponenten different colors that are sharply adjacent to each other when filling the first mold cavity with casting liquid of the color 1 and sealing sealing tool part 3 ;

2 shows the sequel of 1 after the first casting cavity has been filled, remove the sealing tool part and the new counter tool part 4 has been moved to its desired position for the filling of the second cavity,

3 shows the arrangement 2 with opened tool parts,

4 shows the finished casting skin in a plan view (partial view) with a clear, sharply defined Abgrenzkonturlinie between color 1 and color 2 .

5 shows together with the 6 and 7 in a second embodiment, a variant, wherein a sealing tool part 3 is used in the form of a gate valve on the back of the casting skin,

6 shows the sequel of 5 , wherein instead of the locking slide a new tool part 5 is used to color ranges 1 and 2 to separate by a line-shaped casting section with a third color to each other,

7 shows the arrangement 6 with open tool parts

8th shows a variant in which instead of the tool part 5 a robot is used for the production of the linear casting section,

9 shows the arrangement 8th with opened tool parts,

10 shows together with 11 in a third embodiment, a further variant, wherein a sealing tool part 3 on a smooth, non-grained area on the base tool part on the back of the casting skin touches and seals,

11 shows the sequel of 10 after the first casting cavity has been filled, the sealing tool part 3 removed and the new counter tool part 4 was moved to its desired position for the filling of the second cavity, and

12 Finally, shows a variant of the method according to the 5 . 6 and 7 in which instead of the groove trench in the tool base Part a smooth, not grained area is used to seal the color areas from each other.

DESCRIPTION THE EMBODIMENTS

In the figures, the same reference numerals designate the same or functionally identical components. It was deliberately omitted, at the sealing points on the bridge 14 Draw double lines to keep the drawing clearer and the sealing function of the sealing tool part 3 clear against the web contact surface to illustrate.

The Visible side of the casting skin is each the lower surface the casting skin, this means, the eye of the beholder looks from below onto the casting skin.

A base tool part 1 is in 1 and 2 partially shown in section.

Essential for an immaculate surface of the casting skin is, inter alia, that initially the base tool part 1 is continuously made in one piece in the field of view of the casting skin.

each Fugue to another tool part would be detrimental to the flawless appearance influence.

The basic tool part 1 It is made of stainless steel and is firmly stored in a suitable production facility for a corresponding interior trim part. Its surface, which gets in contact with the casting liquid, is equipped with a scar pattern, so that the casting skin gets a corresponding grained appearance. The scar depth is between 0.05 mm and 1 mm.

The basic tool part 1 has an integrally formed with the base tool part of this web 14 which extends along the intended color separation line. It is tapered slightly trapezoidal in cross-section for ease of demolding and about 2mm high. Its for the contact with the sealing tool part 3 effective width is about 0.5 to 2 mm.

A Minimum web width of 0.5 millimeters is provided to seal tightness to ensure.

A counter tool part 2 is also made of stainless steel or the materials provided as described above and adapted largely to the shape of the mold to the surface of the base tool part, so that with appropriate approximation of the two tool parts the desired constant layer thickness results as the height of the intermediate cavity.

The contour of the web is repeated in this approximately to the end of the rising edge of the trapezoid. There is a backward upward contour, which preferably runs linear. The counter tool part 2 is relative to the fixed base tool part 1 movably mounted, so that at least one open position and in the 1 shown closed position can be achieved.

A sealing tool part 3 can also be moved from an open to a closed position, as in 1 is shown.

According to the invention, at least that for the contact with the Abdichtwerkzeugteil 3 intended area of the bridge, area 14 , about 1-2 mm wide, smooth and not grained, so that also smooth contact surface of the Abdichtwerkzeugteils 3 can cause a sufficient tightness even at a moderate pressure. So that the two contact surfaces (see circle 7 ) during the pressing phase, when the cavity for paint 1 is filled and the casting liquid hardens, are plane-parallel to each other, it is envisaged to lock the tool by appropriate measures, lock above

2 shows the sequel of 1 After the first casting cavity with a first casting liquid 5 filled with the first color, the sealing tool part 3 removed and the new counter tool part 4 in its set position for the filling of the second cavity for the casting liquid 6 was moved with the second color.

The counter tool part 4 is corresponding to counter tool part 2 trained and also open - closed movable. It forms with the bumper 8th the color 1 , the counter tool part 2 and the base tool part 1 the cavity for the second casting liquid 6 with the second color, which is different from the first one.

For the production process for the multicolored casting skin:
The production of the first color component of the casting skin takes place with the above-mentioned base tool part 1 , the counter tool part 2 and the sealing tool part 3 , This is the base tool part 1 imaged the visible side of the later casting skin. Through the counter tool part 2 becomes the back of the color component 1 illustrated, wherein the sealing tool part 3 the sealing of the paint component 1 realized to the rest of the form.

The seal is made from the perspective of the finished casting skin at the bottom of Nutgrabens, the negative of the aforementioned web 14 represents and the color separation between first color and second color represents. The groove trench serves to achieve a clean separation between the two colors by the transition area between the colors is usually well shaded in Nutgraben and therefore not visible to the viewer. Furthermore, the base of the Nutgrabens serves as a surface for sealing the tool part 3 on base tool part 1 ,

After curing of the first casting liquid 5 with the first color the sealing tool part opens 3 , and counter tool part 4 is closed for it. The counter tool part 2 meanwhile holds the casting skin component 5 with the first color pressing against the base tool part 1 firmly. This prevents that during injection of the casting liquid 6 with the second color parts of the low-viscosity casting liquid 6 to the visible side of the area of the first color 1 running and thereby causing errors on the visible surface, the clarity of the dividing line between the color areas 5 and 6 deteriorate.

After curing of all casting skin components 5 and 6 All tool parts can be opened, whatever is in 3 is shown. The finished casting skin 9 arises from the components of the casting fluids 5 and 6 by curing and chemical bonding at the abutting edge 8th , The PUR material used results in a strong bond between the hardening layer 6 and the already cured component 5 at the butt edge 8th , as an elongated demarcation contour line 8th in 4 is shown.

Depending on the planning of the further work steps for the production of the interior trim parts, the casting skin can 9 or in the form of the base tool part 1 remain in order to carry out further production steps with the casting skin, as they are known in the art. This includes the application of a foam layer on the casting skin 9 and possibly the application of a dimensionally stable carrier material, so that the interior trim part can be supplied dimensionally stable or mounted. Should the foam layer be dispensable, the carrier layer can also be applied to another, respectively exposed layer or to the casting skin itself.

The press-like manufacturing device for multicolored cast skins according to the embodiment includes a fixed abutment for the base tool part 1 and a traversing mechanism with appropriately designed brackets and bearings for all other tool parts, as is already known for example in the plants for the production of the aforementioned monochrome casting skins.

The tool parts 2 . 3 and 4 can be moved along a predetermined path by correspondingly provided on the manufacturing device guides. The guides are especially for the Abdichtwerkzeugteil 3 worked very precisely to the plane-parallel placement on the bridge 14 and thus to ensure leak-tightness. The drive for the movements can be done pneumatically, hydraulically or by servomotors, as is known in the relevant prior art.

In the embodiment described above, the principle of inventive, sharp color separation on the casting skin is exemplified by two, at one abutting edge 8th the first color of adjacent color areas 5 and 6 shown. The process can be continued as desired by repeating the steps, in which case the next bridge 14 would be applied to the right edge of the drawing, if the process is continued to the right, that is to connect a third color to the second color. The counter tool part 4 then takes over the role of the counter tool part 2 as described above. Another sealing tool part then seals with web.

With further relation to 5 and 6 and 7 another embodiment is described in which a sealing tool part 3 in the form of a gate valve on the back of the casting skin for the separation of two casting cavities 5 and 6 is used. The purpose of this measure is to produce a multi-colored casting skin, the color separation is absolutely sharp-edged represented by a line with a third color. The groove ditch or bridge 14 For color separation, this can be carried out much flatter, resulting in a more harmonious overall picture.

The basic tool part 1 is as above 1 described, trained. The sealing tool part 3 puts on a jetty 14 , also analogous to the case on, as he was at 1 has been described, sealing on. Especially here is that all tool parts 2 . 3 and 4 of the upper tool are simultaneously moved to their "closed" position, which is preferably done as follows:
The obliquely inclined contact surfaces of the Abdichtwerkzeugteils 3 fit angular geometry exactly to the mating surfaces of the counter tool parts 2 and 4 , In mutual contact ( 2 - 3 ) and ( 3 - 4 ), the entire upper tool, 2 . 3 . 4 locked against each other and then moved down until sealing tool 3 on the jetty 14 comes in a sealing attachment. The upper tool 2 . 3 and 4 now closes up sealingly, and the casting cavities 5 and 6 are simultaneously formed according to their desired geometry. The blocking can also be done by the method.

The casting fluids with the two colors 1 and 2 can now be injected simultaneously through this, which shortens the cycle time of the production of the casting skin in the tool. After curing the colors 1 and 2 will, how 6 shows, the sealing tool part 3 pulled and through a counter tool part 61 replaced. The counter tool part 61 seals an area 51 starting with a too color 1 and 2 material technically suitable casting liquid of a third color is filled. As described above, this color combines chemically with the color areas 1 and 2 and together form the finished, three-colored casting skin 9 ,

7 shows the tool assembly in the open state. The three-colored casting skin 9 with a linear, colored casting section from the area 51 can now be removed.

The 8th and 9 show a variant in which instead of the counter-tool part 61 from the 5 and 6 a robot for the generation of the linear casting section of the area 51 is used.

The procedure is started as with 5 described above. Then only sealing tool part 3 drove away. tool parts 2 and 4 remain closed until the first two pouring liquids have hardened. In this example, the robot has a round nozzle and automatically injects the casting liquid of the third color into the open groove of the area 51 one. This can have a cost-saving effect, as, among other things, the tool part 61 is not needed. 9 shows again the tool in the open state, whereby the finished casting skin 9 can be removed.

10 shows together with 11 in a third embodiment, a further variant, wherein a sealing tool part 3 on a smooth, non-grained area on the base tool part 1 sits on a web-free area and seals. This application without groove trench is only recommended if it is possible for the product to have a smooth, unembellished area. The smooth, unhardened area 50 in which the sealing tool part 3 and the base tool part 1 creating a seal is about 1 millimeter wide. The counter tool 2 becomes at a desired distance to the base tool part 1 brought as described above. When sealing by sealing tool part 3 at the base tool part 1 is done, the color may be 1 be injected. After curing of this color is the Abdichtwerkzeugteil 3 driven away, counter tool 2 stays closed and counter tool 4 can be closed to the casting cavity 6 to define for the second color. If the second color has cured, the tool can be opened and the finished casting skin can be removed from the tool.

For example, the method according to 5 . 6 and 7 also with the after the 10 and 11 be combined. This is based on 12 Illustrated by the 6 equivalent. Previously, the sealing tool part 3 coming from above, the casting cavities 5 and 6 sealed against each other. 12 shows the second process step, in which a third casting liquid with a third color in the area 51 can be poured.

Claims (10)

Device for producing multicolored cast skins ( 9 ) with a visible side and a rear side by means of hardenable casting fluids and a spatially delimited separation on the visible side between two cast skin components ( 5 . 6 ) of different colors along a contour line ( 8th ), comprising: a) a base tool part forming the negative of the visible side ( 1 ) with one along the boundary contour line ( 8th ) area ( 50 ) with a smooth surface, b) a counter-tool part forming the negative of the rear side of the first component ( 2 ), and c) a sealing tool part ( 3 ) located on the base tool part ( 1 ) along the smooth area ( 50 ) can be sealingly supported with a preset pressing pressure, d) a counter-tool part forming the negative of the rear side of the second component ( 4 ), e) a traversing system which can move the aforementioned tool parts from the visible side or rear side by means of a guide device at least into an open position defined relative to one another and into a closed position, wherein in the closed position by means of a blocking device a predefined distance between the Base tool part ( 1 ) and the respective counter-tool part ( 2 . 4 ) is adjustable and the sealing tool part ( 3 ) simultaneously with a prescribable pressure on the smooth area ( 50 ) of the base tool part ( 1 ) presses. Device according to claim 1, wherein the area ( 50 ) as standing over the surrounding tool surface standing web ( 14 ) predetermined cross-sectional shape is formed. Apparatus according to claim 1 or 2, wherein the base tool part ( 1 ) is formed integrally throughout. Apparatus according to claim 1, wherein the movement system for the tool parts ( 2 . 3 . 4 . 61 ) is operated hydraulically or pneumatically or with servomotors. Process for producing multicolored casting skin with a visible side and a rear side by means of curable casting fluids, wherein at least on the visible side a spatially delimited separation between two casting skin components of different colors along a contour line (FIG. 8th ), comprising the steps of: a) producing a first casting cavity for a first component ( 5 ) of the casting skin having a first color between: a1) a base tool part which forms the negative of the visible side and which is continuously integrally formed on the visible side ( 1 ), wherein the base tool part ( 1 ) one along the boundary contour line ( 8th ), smooth area ( 50 a2) has a counter-tool part forming the negative of the rear side of the first component ( 2 ) and a3) a sealing tool part ( 3 ) located on the base tool part ( 1 ) along the smooth area ( 50 ) is sealingly supported with a preset pressing pressure, b) sealing the first casting cavity by pressing the Abdichtwerkzeugteils ( 3 ) on the smooth area ( 50 ) with preset contact pressure, c) filling of the first casting cavity with a first casting liquid ( 5 ) with the first color, c) allowing the first casting liquid to harden ( 5 ), d) removing the sealing tool part ( 3 ) from the smooth area ( 50 ), wherein the counter tool part ( 2 ) is not removed, e) producing a second casting cavity for a second component of the casting skin ( 9 ) with a second color between: e1) the base tool part ( 1 ), e2) one the negative of the back of the second component ( 6 ) forming counter tool part ( 4 ), e3) the counter tool part ( 2 ) for the first component ( 5 ) and e4) of a joint edge ( 8th ) of the first component ( 5 ) of the casting skin ( 9 ) along the smooth area ( 50 f) filling the second casting cavity with a second casting liquid ( 6 ) with the second color, g) curing the second component ( 6 ), which connects to the material of the first, cured paint, h) removing the counter tool parts ( 2 ) and ( 4 ) from the hardened casting skin ( 9 ). Method according to the preceding claim, wherein the casting skin ( 9 ) as an essential component polyurethane Method for producing multicolored cast skins with a visible side and a back side by means of hardenable casting fluids, wherein a spatially delimited separation between two casting skin components of different colors along a contour line (at least on the visible side) 8th ), comprising the steps of: a) producing a first and a second casting cavity for a first and a second component ( 5 ) of the casting skin having a first and a second color between: a1) a base tool part forming the negative of the visible side and formed integrally on the visible side ( 1 ), wherein the base tool part ( 1 ) one along the boundary contour line ( 8th ), smooth area ( 50 a2) has a counter-tool part forming the negative of the rear side of the first component ( 2 ) and a3) a sealing tool part ( 3 ) located on the base tool part ( 1 ) along the smooth area ( 50 ) is sealingly supported with a preset pressing pressure, a3) a counter-tool part forming the negative of the second component ( 4 ) and the sealing tool part ( 3 b) sealing the first and second casting cavities by pressing on the sealing tool part ( 3 ) on the smooth area ( 50 ) with preset contact pressure, c) filling of the first and second casting cavities with a first and a second casting liquid ( 5 . 6 ) with the first and second colors, d) allowing the first and second casting liquids to harden ( 5 . 6 ), e) replacing the sealing tool part ( 3 ) by a counter tool part ( 61 f) filling the third casting cavity with a casting liquid having a third color; g) allowing the third casting liquid to harden into a discrete, third casting skin component ( 51 h) Removal of the counter tool parts ( 2 . 4 . 61 ) from the hardened casting skin ( 9 ). Method for producing multicolored cast skins with a visible side and a back side by means of hardenable casting fluids, wherein a spatially delimited separation between two casting skin components of different colors along a contour line (at least on the visible side) 8th ), comprising the steps of: a) producing a first and a second casting cavity for a first and a second component ( 5 . 6 ) of the casting skin having a first and a second color between: a1) a base tool part forming the negative of the visible side and formed integrally on the visible side ( 1 ), wherein the base tool part ( 1 ) one along the boundary contour line ( 8th ), smooth area ( 50 a2) has a counter-tool part forming the negative of the rear side of the first component ( 2 ) and a3) a sealing tool part ( 3 ) located on the base tool part ( 1 ) along the smooth area ( 50 ) is sealingly supported with a preset pressing pressure, a3) a counter-tool part forming the negative of the second component ( 4 ) and a seal tool part ( 3 ) b) pressing on the sealing tool part ( 3 ) on the smooth area ( 50 ) with preset contact pressure, c) filling of the first and second casting cavities with a first and a second casting liquid ( 5 . 6 ) with the first and second colors, d) allowing the first and second casting liquids to harden ( 5 . 6 ), e) removing the sealing tool part ( 3 ) and introducing a third casting liquid with a third color into the open space between the first and the second casting liquid, f) outside of the third casting liquid to form a separate, third casting skin component ( 25 . 51 ) g) removing the counter tool parts ( 2 . 4 ) from the hardened casting skin ( 9 ). Method according to one of claims 5 to 8, further comprising the step: applying a foam layer on the back of the casting skin ( 9 ). Method according to one of claims 5 to 9, further comprising the step: applying a carrier layer on the exposed layer