DE3535398A1 - METHOD FOR FORMING A DECORATIVE LAYER ON A BASE WITH A RELIEF STRUCTURE - Google Patents

Description

Description:

The invention relates to a method for producing a decorative layer on one having a relief structure Object.

Decorative lettering and decorations with letters were previously used on vehicle parts and other fittings or patterns applied by printing (e.g. screen printing), or by being applied to the surface of the molded parts with Ink or paint a paint has been applied, the color of which differs from the surface color of the relief structure exhibiting part differed. However, in the conventional printing or painting, blurring often occurred or smeared letters and patterns, so that they had an unsightly appearance, if the base possessed a relief structure.

The invention is based on the object that the prior to eliminate the above disadvantages inherent in the art and a method for forming a decorative layer Letters or patterns on a structure having a relief Create product with letters or patterns having sharp outlines and an appealing appearance own.

This object is given by the claims Invention solved.

The basic idea of the invention is that a decorative layer on a having a relief structure Subject is formed by the following process steps: In the first process step, at least a section of the surface of the relief structure a primer applied to the base,

whereby the depressions of the relief are flattened. The second step is to flatten the Surface of the base with ink or paint applied a print or a coat of paint, which is in the color differs from the color of the surface of the pad. This creates the decorative layer. With In other words: a special feature of the invention is that the decorative layer by printing or Painting takes place after the depressions of the relief structure have been made flat.

In the following, exemplary embodiments of the invention are explained in more detail with reference to the drawing. Show it:

1 is an enlarged partial cross-sectional view of a

Side part molding with a decorative layer formed according to the invention on it,

Fig. 2 is a partial plan view of a molded piece which in the manner according to the invention a decor

tive layer is formed,

Fig. 3 is a partial cross-sectional view of a molded piece in which the recesses almost completely with are filled with a primer, and

4 shows a partial cross-sectional view of a molded piece in which the depressions are completely filled are and the protruding parts of the relief structure still up to a certain height

the primer are covered.

In the method according to the invention, a Relief structure having object formed a decorative layer that initially on at least one

A primer is applied to part of the surface of the object having the relief structure, whereby the depressions of the relief structure are made flatter. The second step is on the flatter or flattened part by printing or painting with ink or an application material that is different from the surface color A decorative layer is applied to the color that distinguishes the object.

The first process step of the invention is to bring the Z.weck _r in at least part of the surface of the relief structure having the article a filler to flat around the low-lying portions of the relief structure. In the first process step, these deeply located parts of the relief structure are filled with a primer material so that the surface of the object is practically smooth. The depressions can - as shown in Fig. 1 - be exactly filled, or as shown in Fig. 3 - only be almost completely filled. Another possibility, which is shown in FIG. 4, is to fill the depressions excessively.

The primer 1 coat can be applied to part or all of the Surface of the object having the reflow structure are applied, which depends on which Kind is the decorative layer. The primer coating can be applied in virtually any manner with a clear primer or with a primer that has the same color as that with the relief structure Subject to be achieved. The type of primer and the method of applying the primer are not restricted.

In the case of the product having the relief structure, it can be practically any material as long as

this material accepts the primer application. It can be, for example, polyvinyl chloride, ABS resin, polycarbonate or acrylic resin.

In the invention, the spacing or pitch of the relief pattern is not critical, but it should be preferred 10 to 100 μπι be. With a division of less than 10 μπι the object has a practically flat Surface. With a pitch of more than 100 μm, the relief-like object has a leather-like surface, where the method of the invention is not as effective. The division of the relief pattern is preferably about 20 μπι. The relief pattern can vary from one product to another, but it is usually around a final application of paint (point-like relief) in the case of molded parts (e.g. side panels) of automobiles.

The second step has the purpose of being flattened Part of forming a decorative layer by applying printing or painting with ink or paint, which differs in color from the color of the surface of the object having the relief structure. The second step is to apply a on part of the surface 21 of the primer layer 2 (see Figs. 1 and 2) to form decorative layer 3.

Printing or painting in. The second process step is carried out with ink or a coating material, which resp. which differs in color from the color of the surface of the product. The agent is not subject to any restrictions, as long as it forms a decorative layer. The printing can be screen printing. The painting can be done with Using a stencil tape or a stencil plate. Ink and coating material for printing or printing

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for the painting are not subject to any sounds, as long as they differ in their color from the surface color of the subsurface.

The decorative layer forms a decoration in the form of letters or patterns. Shape, size and thickness of the decorative layer are not critical, however, they should be appropriate according to the subject matter and can be selected for the respective application. For example, the decorative layer can be the one in Fig. 2 shown letters "XR" act.

A final treatment can be added to the second process step connect, which can consist, for example, in the application of a clear coating. This clear coating can be on the decorative layer alone or on the entire surface of the structure having the relief structure Product can be formed. The clear coating protects the decorative layer from mechanical damage and harmful effects of light.

A feature of the present invention is that the decorative layer is formed by printing or painting after the deep-lying parts of the relief were made flat. Accordingly, the decorative layer has an attractive appearance without due to the rough surface of the relief structure There are smudges or unclear outlines.

The invention is illustrated below with the aid of examples.

example

The invention is illustrated in Figures 1 and 2, which are a partial cross-sectional view and

is a plan view of a product provided with a decorative layer and having a relief structure. FIG. 1 is a sectional view taken along the line AA in FIG. 2.
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In Fig. 1, the reference numeral 1 denotes a relief structure having side panels (1000 mm long and 80 mm wide) made of soft polypropylene. The surface color the molded part is black. On one side of the surface of the molding, the letters "XR" were sprayed on. a primer coating made so that the deep-seated Parts of the relief structure are exactly filled. The gradient structure is created by a final coat of paint. The primer coating consists of Cashew Micron (trademark), a clear primer.

This was followed by screen printing on the smoothed parts showing the letters "XR" (21) on the surface 11 represent the product having the relief structure, the decorative layer 3 is formed, which represents the letters "XR" (3). The letters "XR" (3) are similar to but smaller than the letters "XR" (2 or 21). In the present example, screen printing turned white Ink printed.

The by screen printing on the having the relief structure Decorative letters "XR" formed on the side panel had an attractive appearance and did not show any Smudges or unclear edges. As explained above, with the inventive Process visually appealing decorative layers on products provided with a relief structure by printing or Make paint. The decorative letters or patterns have sharp contours.

Claims (6)

Method for forming a decorative layer on a base with a relief structure 1. A method for forming a decorative layer on a base having a relief structure, thereby characterized in that a primer is first applied to at least part of the substrate surface is to at least partially fill or eliminate the depressions in the pad, and that on the so smoothed document surface is printed or applied an ink or a paint that or the differs in color from the surface of the pad. 2. The method according to claim 1, characterized in that the primer is a clear coat. 3. The method according to claim 1, characterized in that that the primer is a paint that has the same color as the surface of the base. 4. The method according to any one of claims 1 to 3, characterized in that the printing takes place as screen printing. Radedcestraee 43 8000 Mündien 60 Telephone (089) 883603/883604 Telex 5212313 Telegrams Pater.tconsult Sonnenberger Straße 43 6200 Wiesbeden Telephone (06121) 562943/561998 Telex 4186237 Telegrams Patentconsult Fax (CCITT 2) Wiesbaden and Munich (089) 8344618 Altenlion Patentconsult 1 5. The method according to any one of claims 1 to 4, characterized characterized in that the base having a relief structure has a repeating relief pattern with a division of 10 to 100 μΐη. 6. The method according to any one of claims 1 to 5, characterized characterized in that the decorative layer formed by the printing or application with a clear Plating is completed. 10