JPS6018309B2 - Method for manufacturing architectural panels with sand decorative surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a so-called sand decorative surface in which partial sand decorative surfaces and smooth flat parts are scattered on the decorative surface of architectural panels, such as panels used for interior and exterior wall materials. Relating to a method for manufacturing architectural panels.

Recently, improvements in the surface design, ie, the decorative surface, of metal plates, asbestos slate plates, plaster plates, etc. have begun to progress rapidly.

For example, so-called castable type panels, which are formed by adhering sand to the surface of a metal plate or by using mastic as a main material and paint, are commercially available. However, simply sprinkling sand onto a flat metal plate, asbestos slate plate, etc. will result in an appearance that is simply an imitation of a mortar wall, and is essentially no better than a sprayed mortar wall. In addition, if it is formed on a wall made of mastic, it can give a three-dimensional effect, but even if mastic paint is sprayed on the wall, it still looks like an imitation. Furthermore, in order to improve the above-mentioned problems, a method has been proposed in which, for example, a base coat is applied to the entire surface of the uneven surface, a large amount of sand is sprinkled on top of the base coat, and the coat and sand on the convex surface are removed to form a decorative surface. However, in this case, removing the sand and base coat present on the convex surface is complicated and cannot be done efficiently and quickly. Particularly when the base material is a metal plate, its removal becomes even more difficult. In order to eliminate such defects, the present invention makes effective use of the physical properties of metal, plasterboard, or asbestos slate, particularly plastic deformation, to form an uneven surface on the decorative surface, and furthermore, the concave surface is coated with sand. This paper proposes a manufacturing method that distributes them at a high density to give an appearance that harmonizes an artificial and natural appearance.

An embodiment of the construction panel having a sand decorative surface according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a building panel obtained by the manufacturing method according to the present invention, and FIGS. 2 and 3 are explanatory views showing a part of the panel in cross section. In the figure, reference numeral 1 denotes a base material made of a material such as a metal plate, a plaster plate, an asbestos slate plate, etc., and has a concave surface 2 and a convex surface 3 on its decorative surface. Note that the shape pattern (distribution state) of the concave and convex surfaces is arbitrary. Furthermore, the height difference between the concave and convex surfaces can be up to about 3 sides. Of course, materials such as metal plates and slate plates have different concave and convex structures. 4 is a mold release agent, such as paraffin if the base coat described below is water-based.
It is coated with silicone resin, etc. If it is oil-based, it is coated with water etc.

Reference numeral 5 denotes a base coat, which has a dry thickness of about 10 to 200 microns, and is provided only on the concave surface 2.

The base 5 has the function of adhering the following sands, such as paints whose binder is thermosetting acrylic resin, polyester resin, alkyd resin, epoxy resin, acrylic polyurethane resin, non-yellowing polyurethane resin, or melamine resin. and metallic paint. This base coat, so-called paint, is applied to the concave surface to a uniform thickness using a roll coater, spray, flow coater, or other means. 6 is to create a state in which the sand is distributed at a high density only on the concave surface of the uneven surface of the base material 1, or the sand is distributed in a state in which the sand is in close contact with each other.

Furthermore, this sand is fixed so as not to protrude beyond the top portion 3a of the convex surface. The above-mentioned distribution structure is preferable from the viewpoint of balance, contrast, and harmony between the convex plane and the super-shaped surface formed by laying fine sand protrusions on the concave surface. Furthermore, the above-mentioned sand does not simply mean silica sand, but also includes glass powder, ceramic pieces, rock powder, pearlite, whitebait, artificial aggregate colored silica sand, blast furnace slag, plastic beads, and the like. Of course, it is also possible to use a mixture of several types of these sands. The grain size of the sand is about 3 ribs or less, usually 0.5 to 1 rib. 7 is an overcoat applied to the top 3a of the convex surface 3 and the concave surface, that is, the sand surface.

This overcoat 7 uses the same coating composition as the base coat described above, but the color, gloss, tone, etc. can be selected arbitrarily. Next, a method for manufacturing a construction panel having a decorative surface according to the present invention will be explained using FIG.

First, a colored iron plate (thickness 0.27 side) was used as a base material, and this had an uneven surface as shown in FIG. 1. This base material 1 is molded into the shape shown in FIG. A mold release agent 4 is applied to the uneven decorative surface of this panel as shown in FIG. 3a. Next, as shown in FIG. 3b, a base coat 5 is applied to the uneven surface by spraying or using a flow coater. At this time, apply a smaller amount than the usual film thickness. That is, since the base coat present on the convex surface is melted and removed by air spraying or a roll kept at high temperature on the concave surface, the amount of expensive paint can be reduced accordingly. Also, use air spray or a roll to spray the mold release agent on the convex surface and the base coat.
can be eliminated all at once. Thereafter, a large amount of sand is sprinkled as shown in Figure 3c. Next, as shown in FIG. 3d, the sand that has not adhered to the convex surface and the base coat is removed. Thereafter, as shown in FIG. 3e, an overcoat 7 is applied to the convex and concave surfaces (sand) by spraying or using a roll coater. At this time, the coating film thickness of the overcoat is about 10 to 100 microns when wet. Next 80
Baking within the temperature range of ~230:00. Of course, a room temperature drying type can also be used. What has been described above is only one embodiment of the building panel according to the present invention, and it can also be formed as shown in FIGS. 5 and 6.

That is, FIG. 5 is a panel without an overcoat,
FIG. 6 shows an asbestos slate plate with an uneven surface formed on one side. Furthermore, as shown in FIG. 1, the inner surface of the panel can be filled with a core material such as polyurethane foam 8 to provide unevenness and reinforcement. As described above, according to the method of manufacturing a building panel according to the present invention, a decorative surface can be obtained that has a smooth design surface with a rich three-dimensional effect, and has an artificial and natural feel due to the harmony between the flat surface and the raised surface consisting of protrusions. It has the feature that it can be done in fewer steps.

In addition, when sand and the like on the convex surface are removed from the concave surface, it is filled with sand and the like and the same height is maintained, which has the advantage of directly promoting the above-mentioned appearance. It also has the advantage of making it easy to create two-tone decorative surfaces.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one surface of a panel obtained by the method of manufacturing a building panel with a sand decorative surface according to the present invention, and FIG. 2 is a longitudinal sectional view showing a part of the panel shown in FIG. 1. Fig. 3 is an explanatory diagram showing the manufacturing process of a building panel having a sand decorative surface according to the present invention, Figs. 4 and 5 are explanatory drawings showing the building panel, and Fig. 6 is an enlarged explanation showing other embodiments. figure. 1...Base material, 2...Concave surface, 3...Convex surface, 4...Base coat, 5...Sand, 6...Overcoat. OZ Diagram O - Box Oyo Diagram O4 Rumor Ga 5 Crane Sai Diagram 6

Claims (1)

[Claims] 1 Apply a mold release agent to the convex surface of the construction base material that has an uneven surface, then apply a base coat to the uneven surface, sprinkle a large amount of sand on the uneven surface while the base coat is not cured, and then apply a mold release agent to the uneven surface so that it does not stick to the base coat. A method for manufacturing a construction panel having a sand decorative surface, characterized in that when sand is removed, a mold release agent on the convex surface is removed, and then an overcoat is applied to the entire uneven surface or only to the convex surface.