DE2139231A1 - PROCESS FOR STRENGTHEN STAINING OF WOOD SURFACES PRE-TREATED BY SANDBLASTING - Google Patents

Description

Dr. phU. G.B. HAGEN J

Patent attorney

8000 MUNICH-SOLLN

Franz-Hals-Strasse 21. "-

Telephone 796213 Munich, June 30, 1971

Dr.H./fr

ROS 2951

L. Rosner OHG

8 Munich 2
Luisenstrasse 22

Process for high-contrast pickling by sandblasting pretreated wooden surfaces

For high-contrast staining of wooden surfaces, it is known to first sandblast the wooden surface to subjugate and thereby the softer wood of the wood surface, ζ. B. those lying between the annual rings Places that wear away more than the harder wood parts? z. B. the annual rings themselves. Then the Sandblasted wooden surface stained and then varnished transparent.

The invention aims to do more by pickling To achieve color contrasts on wooden surfaces.

A method for high-contrast pickling by sandblasting pretreated wooden surfaces, in particular softwood surfaces, are characterized according to the invention in that the wood surface worked out deeper by sandblasting on the softer wood areas with a

Bayerische Vereinsbank Mündien 820993

ROS 2951 - 2 -

first stain and varnished with a stain-resistant transparent lacquer and is then sanded in such a way that the harder wood areas are exposed and these exposed areas of wood are stained with a stain of different color effects and then another coating with transparent varnish takes place.

A particular embodiment of the invention provides that fe that instead of the first general Beivor procedure the wood surface is varnished with a pigment paint is carried out.

When carrying out the method according to the invention, the sand-blasted wood surface is initially stained by brushing on, rolling on or spraying on. After drying, the B _s ize the wood surface to the soft wood bodies appear brighter than on the hard wood sites, which is referred to as positive Beisung. The surface treated in this way is covered with a waterproof, transparent varnish that is resistant to further staining. After drying the trans- parent lacks f are the raised remaining in Besandstrahlung points, namely the paint and the underlying surface hard wooden layers, such as the annual rings, abraded, while maintaining the recessed soft wood points, the dressing and the overlying paint layer.

Around a different colored, high-contrast wooden surface to achieve, the resulting wood surface on the hard wood areas exposed by the sanding stained again with a different colored stain and varnished again with transparent varnish.

30982Ü / 03U

With the second stain, only the abraded areas are exposed to the stain of a different color stained, while the previously lightly stained soft and recessed areas of the second stain not be subjected.

In this way, a very high-contrast grain pattern of the wood surface can also be achieved in different ways Achieve color tones, in contrast to the usual staining processes, in which only shades of color are found between hard and soft wood areas.

Instead of the first general staining process, it is also possible to apply an opaque coating to the heavily sandblasted one Make the wood surface with pigment varnish and after drying the raised areas by sanding to expose. As before, the exposed hard wood areas are then stained again, followed by a final stain Painting.

30982Ü / 03U

Claims (2)

ROS 2951 - 2r- Patent applica s ρ r u che y Process for high-contrast pickling by sandblasting pretreated wooden surfaces, which are marked by sandblasting the softer parts of the wood are deeper stained with a first stain and painted with a stain-resistant transparent varnish and then sanded in the way is that the hard wood areas are exposed, and these exposed wood areas with a Stains with different color effects can be stained and then painted again with transparent varnish he follows. 2. The method according to claim 1, characterized ge Ine t that instead of the first Pickling with stain painting with pigment varnish is carried out. 309820/0314