DE4421111C1 - Surface coating process to achieve an imitation burl wood effect - Google Patents

Abstract

Surface coating processes for producing an imitation root timber effect comprise (A) (1) applying a layer of filler with a colour which determines the base shade of the final effect; (2) air-drying the filler coat; (3) preparing a soln. of scumble paste in water; (4) applying this soln. to the filler coat; (5) trickling or spotting alcohol, spirit, isopropanol, acetone, EtOAc, etc., onto the still-wet scumble coat to form the root timber pattern; (6) drying rapidly; (7) applying and drying opt. coloured clearcoat(s); and (8) applying clear topcoat(s); (B) (a) performing stages (1)-(4) as above; (b)(5) sprinkling salt grains on the still-wet scumble to form the pattern; and (c) performing stages (6)-(8) as above; (C) to produce the effect on glass, (1) cleaning and degreasing a glass plate, etc.; (2) coating with an adhesive clear varnish or transparent adhesive and drying this; (3) applying a scumble coat as in (A) and (B) stage (4); (4) forming the pattern as in (A)(5) and drying this; (5) coating with an acrylic scumble coloured to match the shade of the first scumble (3); (6) applying a primer paint coloured to match the ground colour of the imitation root timber layer; and (7) applying a coat(s) of protective varnish.

Description

The invention relates to a surface coating process to achieve a root wood imitation effect.

For environmental and ecological reasons, the Verwen growth of natural roots, for example in vehicle construction, more and more restricted.

Regardless of this, there is a great need for an optical attractive design of the surfaces of plastic, Molded, injection molded or cast parts.  

It has therefore already been proposed to use Fo lien from plastic with an imitation root wood imprint provided and then these films on the surface of the optically to stick on to refined plastic or metal parts. Difficulties arise when Rundun edges, corners and edges of intricately shaped plastic parts to be coated. It also requires such a procedure an extremely careful Be handling the adhesive film, combined with a high manual Skill, so that automated manufacturing is complicated molded parts is almost impossible.

JP 4-260475 (A) describes a method for achieving a Patterns known on a surface, in which the treating surface of a substrate first Sublayer is applied, which is then with a second color layer is provided. On the second layer of paint becomes a solvent-like liquid drop by drop applied the second layer of paint at the point of impact displaced, creating a decorative pattern. Then the pattern obtained with a top layer Mistake. The one obtained with the above method However, surface structure does not produce an effect in form a wood grain.

It is therefore an object of the invention to provide a surface coating ting process to achieve an imitation burl wood effect to propose, on the one hand, complicated structure and molded surfaces can be coated and that on the other hand, a rational, automatable production equips.

The object of the invention is achieved with the counter stood of claims 1, 2 or 7, the sub claims at least appropriate configurations and further represent formations of the subject of the invention.

The basic idea of the invention is, contrary to be knew methods for achieving an imitation coating to use a special spraying technique, which in known painting lines can be implemented.

According to the invention, the basic tone is applied after application the filler layer that will later determine the imitation layer briefly flashing off a dough glaze dissolved in water applied by spraying or brushing.  

Then on the not yet dried dough glaze layer Drip on or spray on alcohol, Isopro panol, acetone, ethyl acetate or the like or an application of Salt or coarse salt grains made. In this process step forms a grain typical of root wood which is then quickly dried into an over paintable condition is transferred. Before applying one Clear lacquer topcoat can then expediently minimum at least a colored clear coat is applied, the coloring according to the respective natural wood Color is chosen and the plastic character and the spe the structure of the root wood.

The invention will now be based on several embodiments games are explained in more detail.

In a first embodiment, an art fabric material, which initially briefly surfaces loosened on the side and if necessary provided with a primer. After flashing, a filler is applied, with the Color of the fountain pen is the basic tone of the later wood imitation certainly. In the first embodiment, the keynote is the filler beige.

At the same time, a brown, initially pasty dough glaze is added very much water mixed so thin that a through running time of 12-18 seconds in a DIN cup. The Teigla Sur preparation is essential for later training Ending root wood imitation pattern. The prepared dough glaze is then sprayed or streaked onto the filler layer chen.

Before the dough glaze layer has dried, it is now fired Spirit injected loosely and irregularly or  instilled. Likewise, the application of single trop fen alcohol with a pipette.

It has been shown that instead of alcohol or alcohol also gasoline, isopropanol, acetone, ethyl acetate or the like can be instilled.

As a result of the instillation mentioned, there is a displacement components of the dough glaze instead, as a result typical root wood structure pictures emerge.

This structure formation is broken up by the amount of alcohol or the like and the degree of drying of the dough Controllable glaze layer.

The applied layer is then dried ten, for example, in a continuous furnace at 60 ° C and approx. 2 minutes It has proven to be advantageous that this Drying process carried out quickly and without interruptions becomes.

After drying, a clear coat, for example a One-component clear coat, with coloring, d. H. abge sounds applied to further improve the Holzimi to achieve character. According to the first embodiment game will be a brown dough glaze on the aforementioned beige Filler applied and the clear coat layer tinted brown.

It has been shown that a gray tint is a cold one Burr wood tone, a beige to brown tint a warm one Wood tone results.

Likewise, any color, for example pink, ros'red, light to dark blue, yellow, orange or nuances  of which can be achieved. Likewise, a metallic, po lychrome or opalescent tint successfully tested the.

It is possible to three to three times the colored clear coat to be applied five times for a correspondingly deeper tint. To the ser point it should be mentioned that the clear coat layers so like the top layers applied later, the expedient sometimes consist of a two-component acrylic paint for the durability of the surface obtained is essential.

The application of the actual top layer or the deck Layers are carried out in a manner known per se, where appropriate between is ground. The result is a quasi glass-like coating, all in all an appealing exterior outer appearance of the surface treated Ge leads objects.

At this point it should be mentioned that in addition to plastics other materials, such as metals, in the above described manner can be treated.

In a second embodiment, the background is made treatment including application of the water diluted Dough glaze in the same way. On the fresh surface d. H. the dough glaze layer that has not yet dried becomes petrol dosed injected or instilled, which causes a marbled surface results. Then immediately with alcohol or high-proof alcohol another one dribble or metered injection made. All other Steps then take place analogously to the first exemplary embodiment.

In this second embodiment, there is a be particularly plastic effect of the imitation wood structure.  

In general, it is noted that large drops of spirit are large Root roots result. So it can add up with the amount of bringing spirit or the like on or in the dough glaze layer the size and / or distribution of the root wood approaches ge aims to be controlled.

In a third embodiment, instead of one in Water-based dough glaze is a water color, for example Magiccolour, spread or varnished. On the still A surface that has not been dried in this way then becomes Spiri dripped on or with a pipette or other suitable Means injected. In this case, too Wood grain structure.

According to the fourth embodiment, including the Applying the dough glaze layer as in the first embodiment example, but instead of alcohol or the like. the not yet dried dough glaze layer with coarse salt is sprinkled.

In this case, too, a finer root is formed wood structure, which in the according to the first embodiment game described way is treated further.

All in all, can be used for the training of imitation wood pattern or the imitation wood structure that in a water-soluble, especially dough glaze Spiritus, Ben zin, isopropanol, acetone, ethyl acetate or similar loose and irregularly sprayed or introduced becomes.

After a quick drying process, further processing takes place action to improve the already existing  Structure and achieving adequate durability serves. The method according to the working examples was successful on different substrates, at for example wood, wood substitutes, metal, plastic, poly tried esters and the like. To ensure adequate liability of the individual layers, especially the filler layer Chen, however, is based on the respective starting materials coordinated basic treatment required.

It should be noted that the application of the dough glaze or Casein colors are very rich, which makes a particularly un more evenly, optically erin on natural root wood structures nerner effect is achievable.

Claims (9)

1. Surface coating process to achieve a root wood imitation effect, characterized by the following steps:

• - Applying a filler layer, the color of the filler layer determining the basic tone of the later imitation;
• - ventilation of the filler layer;
• - preparing a dough glaze dissolved in water;
• - Applying the dough glaze solution to the filler layer;
• - Drip on or selectively apply alcohol, gasoline, alcohol, isopropanol, acetone or ethyl acetate onto the not yet dried dough glaze layer to form the root wood pattern;
• - quick drying of the existing layers;
• - Applying at least one colorable clear coat and drying it to obtain a top glaze layer and
• - Apply at least one clear coat top coat.

2. Surface coating process to achieve an imitation burl wood effect, characterized by the following steps:

• - Applying a filler layer, the color of the filler layer determining the basic tone of the later imitation;
• - ventilation of the filler layer;
• - preparing a dough glaze dissolved in water;
• - Applying the dough glaze solution to the filler layer;
• - distributed application of salt grains on the not yet dried dough glaze layer for root wood pattern formation;
• - quick drying of the existing layers;
• - Applying at least one colorable clear coat and drying to obtain a top coat and
• - Apply at least one clear coat top coat.

3. Surface coating method according to claim 1 or 2, characterized, that to achieve a brownish root wood structure the Color of the filler layer beige and that the at least one Clear coat is colored beige to brown. 4. Surface coating process according to one of the above claims made, characterized,  that the top glaze layer is mixed so thin that a lead time in the DIN cup of 10-18, preferably 12-15 seconds. 5. Surface coating process according to one of the above claims made, characterized, that the dough glaze solution by brushing or spraying is brought. 6. Surface coating process according to one of the above claims made, characterized, that the quick drying after instillation or application materials to achieve root pattern formation in a continuous furnace at essentially 60 ° C and one Duration of essentially 2 minutes. 7. Surface coating process to achieve an imitation burl wood effect, characterized by the following steps:

• - Applying a filler layer, the color of the filler layer determining the basic tone of the later imitation;
• - ventilation of the filler layer;
• - preparation of a casein color dissolved in water;
• - applying the casein color solution to the filler layer;
• - Dripping or spot application of alcohol, gasoline, alcohol, isopropanol, acetone or ethyl acetate on the not yet dried casein color layer for root wood pattern formation;
• - quick drying of the existing layers;
• - Applying at least one colorable clear coat and drying it to obtain a top glaze layer and
• - Apply at least one clear coat top coat.

8. Surface coating process according to one of the above claims made, characterized, that by the thickness of the dough glaze or casein color layer the later color and structure of the root wood imitation is set. 9. Surface coating method according to claim 1 or 2, characterized, that the dough glaze layer applied by spraying and on then a targeted painting of the dough glaze layer for setting different layer thicknesses and structure Real distribution of the dissolved components in the dough glaze layer takes place, creating the appearance of the imitation wood is variable.