JPS6112753B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a decorative board having an uneven pattern with a rich three-dimensional effect, which is used as an interior and exterior material for buildings.

Conventionally, there are many types of decorative laminates that have an uneven pattern formed by applying various types of coatings to the surface of a substrate.One of these is a decorative laminate that has an uneven pattern similar to tiling on the surface of a substrate.

The decorative board has a large number of tile-like uneven patterns formed on the surface of the board, and is widely used as a building board that can easily form a tiled wall surface. Various manufacturing methods are conventionally known for the above-mentioned decorative laminates.

For example, there is a method in which grooves similar to tiling joints are formed on the surface of the substrate using an embossing plate or an embossing roll, the surface is painted, and then the grooves are painted in a different color to form an uneven pattern similar to tiling. .

However, with the above method, the surface painting and the groove painting are performed separately, which requires time and effort in manufacturing.
Moreover, since the joint-like grooves are formed using an embossing roll or the like, the grooves tend to be rounded due to the spring back of the substrate, and it is difficult to obtain sharp grooves.

Meanwhile, apply masking tape to the surface of the board,
Alternatively, place it on the joint pattern of the tile and apply it to the joint pattern, apply a raised coating using a flow coater or spray gun, and then remove a part of the coating film by removing the masking tape and leave the unpainted recesses. There is a method of forming an uneven pattern similar to brick or tiling.

However, this method requires a large amount of paint to create a three-dimensional effect. In addition, it is impossible to express a feeling of unevenness greater than that of the paint layer, and it lacks a sense of weight. Further, according to the above manufacturing method, even if a large amount of paint is used to form the film, the thickness of the paint layer is approximately uniform, so there is a drawback that the appearance does not change much.

The present invention has been made in view of the above-mentioned conventional drawbacks, and includes a substrate having an appropriate number of block-shaped protrusions scattered at appropriate intervals on the surface thereof. The present invention aims to provide a method for manufacturing a decorative board which has an uneven pattern with sharp joint-like grooves and rich variation and three-dimensional effect, by appropriately applying raised coating and forming a partially exposed part of the substrate by masking on the plane part. It is something.

Note that the block-shaped convex portion in the present invention refers to a convex pattern portion having a flat upper surface and a constant height, a rectangular shape, a polygonal shape, or a circular shape. It is provided by pasting a small plate-like material, or by molding the surface layer of the substrate.

Next, the present invention will be explained with reference to the accompanying drawings which are examples.

FIG. 1 shows the decorative laminate A obtained by the present invention, and FIG. 2 shows the manufacturing method of the decorative laminate A in FIG. This is a substrate for board materials such as boards, cement calcium silicate boards, etc., which are generally used as base materials for architectural decorative boards.

Reference numeral 2 denotes a block-shaped convex portion in which an appropriate number of small plate-shaped objects having sloped side surfaces are provided on the surface of the substrate 1 at least at regular intervals.

The block-shaped convex portion 2 may be formed by adhering a small plate-like material made of the same material as the substrate 1 or a different material to the surface of the substrate 1 with an appropriate adhesive as described above. Further, when the substrate 1 is a plate material made of a material with relatively little spring back and excellent moldability, the surface portion of the substrate 1 may be formed by press molding with an appropriate template.

Next, after applying a sealer treatment to the surface of the substrate 1, a masking material 3 is placed on the flat surface and a raised coating 5 is applied (see FIG. 2A and B). At this time, the upper surface of the masking material 3 is covered with the block-shaped convex portion 2.
It is necessary to arrange it on the plane part with an interval l of a predetermined dimension or more from the side surface of the .

In the present invention, the masking material 3 is placed on the substrate 1 with its upper surface spaced a distance l from the side surface of the block-shaped convex portion 2.
The reason why the masking material 3 is placed on the flat surface of the masking material 3 is that when painting is carried out with the masking material 3 in close contact with the side surface of the block-like projection 2, the lower end of the side surface of the block-like projection 2 is covered with the masking material 3. A width corresponding to the thickness of the masking material 3 may be exposed unpainted. In this case, the block-shaped protrusions 2 give the impression that they are floating above the substrate 1, resulting in an unnatural appearance, and in the case where the block-shaped protrusions 2 are provided by adhesive, the adhesive layer may be exposed. This may damage the appearance. Therefore, by arranging the blocks at intervals l as described above, it is possible to sufficiently apply the raised coating 5 to the lower end of the side surface of the block-shaped convex part 2.
The above-mentioned drawbacks can be prevented.

The masking material 3 is chloroprene, rubber,
A band-shaped masking material made of polypropylene, PVC, Teflon, etc. with a thickness of 2 to 3 mm and a width of about 5 to 10 mm is connected to its end surfaces to form a mesh body having openings that match the shape of the block-shaped convex portion 2. Alternatively, a thin plate made of the above-mentioned material may be provided with a number of openings corresponding to the shape of the block-shaped convex portions 2 of the substrate 1 to form a mesh. The reason why the masking material 3 is used by forming it into a mesh in advance is that when a plurality of band-shaped masking materials are overlapped and arranged in a mesh, the masking material 3 lifts up at the overlapped portions, causing masking. This is because the paint wraps around the back surface of the material 3, making it impossible to obtain a good masking effect.

The opening of the mesh formed by the masking material 3 is as follows:
Since it is necessary to arrange the masking material 3 at a distance l of a predetermined dimension or more from the side surface of the block-shaped projection 2, it is preferable to form the masking material 3 slightly larger than the block-shaped projection 2. As shown in FIGS. 1 and 2, when the side surface of the block-shaped convex portion 2 is formed into an inclined surface,
When the lower end of the masking material 3 is brought into contact with the lower end of the block-shaped projection 2, a gap 1 is created between the upper surface of the masking material 3 and the side surface of the block-shaped projection 2. Therefore, the openings of the mesh formed by the masking material 3 may be formed to have the same shape as the block-like convex portions 2. Further, as described above, when the side surface of the block-shaped convex portion 2 is formed into an inclined surface, it is possible to always maintain a constant distance 1 between the side surface and the upper surface of the masking material 3 when painting. When placing masking material 3,
This is preferable because it saves the effort of adjusting the distance l between the block-shaped convex portion 2 and the side surface. In addition, the above interval l
It is sufficient that the size is sufficient for the paint to adhere to the side surface of the block-shaped convex portion 2, and preferably 2.
mm or more.

Next, a raised coating 5 is applied to the surface of the substrate 1, but this is done by spraying with a spray gun 8 or the like, or by a conventionally known method such as a flow coating method, and is not particularly limited. Spraying is preferable because it has better workability.

The paint used for the raised coating 5 is an oil-based paint, a synthetic resin paint, a water-based paint, an inorganic paint, etc., and is selected and used depending on the material of the substrate 1 and the purpose of the decorative board. The viscosity of the paint is determined depending on the purpose of the decorative board, for example, as shown in the drawing,
5000 ~ when finishing the painted surface with an uneven feel
10,000 centipoise is used. Such a highly viscous paint has low fluidity, so even if the masking material 3 is removed immediately after painting, the paint does not move, resulting in good manufacturing efficiency.

After the build-up coating 5 is completed, the masking material 3 is removed to form a raised portion 6 consisting of an unpainted recess 4 in which the surface of the substrate 1 is exposed on the flat surface of the substrate 1, and a paint layer (raised coating) 5, A decorative board A is formed by applying a coating 7 of uniform thickness to the entire surface.

The decorative board A obtained as described above has a block-shaped convex portion 2 whose entire outer peripheral surface is coated, a raised portion 6 provided on a flat surface between the convex portions 2, and a surface of the substrate 1 that is exposed. It has a concavo-convex pattern that is rich in change and three-dimensional effect due to the combination of concave portions 4.

Next, the inventor will explain the results of creating a decorative board based on the above method.

As shown in Figures 3 and 4, thickness: 9mm, width:
On the surface of the substrate 1 made of a cement calcium silicate plate with a length of 606 mm and a length of 2430 mm, a plate with a thickness of 9 mm and a width of 50 mm to
20 plates made of several types of rectangular cement calcium silicate plates, 100mm long and 100mm to 200mm long with sides sloped at 45 degrees, were arranged approximately uniformly at intervals and bonded with epoxy resin. The block-shaped protrusions 2 were formed by adhering with adhesive. Next, after applying a sealer treatment to the surface of the substrate 1, a brick joint pattern mesh made of a rubber plate with a thickness of 2 mm and having openings having the same shape as the block-shaped convex portions 2 is placed on the surface of the substrate 1. A shaped masking material was placed with its upper surface separated by 2 mm from the side surface of the block-shaped convex portion 2. continue,
A silica colloidal inorganic paint adjusted to a viscosity of 8,000 centipoise is sprayed onto the surface of the substrate 1 almost uniformly at a rate of 1.5 kg/m ² at a pressure of 2 to 3 kg/cm ² using a spray gun, and the paint is built up. was applied. Immediately thereafter, the masking material was removed, dried, and a clear coat of acrylic emulsion was applied to the entire surface. As a result, a decorative board A was obtained which had a concavo-convex pattern rich in brick-like three-dimensional effect, consisting of block-shaped convex portions 2, raised portions 6 consisting of the paint layer 5, and concave portions 4 where the surface of the substrate 1 was exposed. Ta.

As is clear from the above description, according to the method of the present invention, a decorative surface rich in three-dimensional effect can be formed with a small amount of coating. Since the upper surface of the masking material is placed at a distance of at least a predetermined distance from the side surface of the block-shaped convex portion, the coating is performed.
It is possible to apply paint to the entire side surface of the block-shaped convex portion, and it is possible to form a decorative surface with an extremely natural appearance.

In the decorative board produced by the method of the present invention, the heights of the block-shaped convex portions whose entire outer circumferential surface is coated and the raised portions formed by raised coating provided on the flat areas between the convex portions are different, and the flat surfaces are different from each other. Since the part is provided with a recessed part in which the surface of the substrate is exposed, it has an appearance rich in variation and three-dimensional effect.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a decorative laminate with an uneven pattern obtained by the method of the present invention, and Fig. 2 A, B, and C show the manufacturing method of the decorative laminate with an uneven pattern in Fig. 1 in order of process. 3 is a plan view of a decorative board with an uneven pattern created by the inventor, and FIG. 4 is a sectional view taken along the line -- in FIG. 3. A... Decorative board, 1... Substrate, 2... Block-shaped convex portion, 3... Masking material, 4... Concave portion, 5...
Raised painting (paint layer), 6... Raised portion, 7
... Clear coating, l ... Spacing.

Claims (1)

[Scope of Claims] 1. After providing an appropriate number of block-shaped protrusions on the surface of the substrate so as to be scattered at at least regular intervals, a masking material of a certain width is applied to the flat surface of the substrate so that the upper surface thereof has block-shaped protrusions. The masking material is placed so as to have a distance of at least a predetermined dimension or more from the side surface of the board, and then the masking material is removed by spraying or the like, and a recessed part is formed in the flat part of the board in which a part of the board surface is exposed. A method for producing a decorative board having an uneven pattern. 2. A method for manufacturing a decorative board having an uneven pattern as set forth in claim 1, wherein the block-like convex portions are formed by adhering a small plate-like object to the surface of the substrate. 3. A method for manufacturing a decorative board having an uneven pattern according to claim 1, characterized in that the block-shaped protrusions are formed by pressing the surface of the substrate with an appropriate template. 4. Claims 1 to 3, characterized in that the side surfaces of the block-shaped convex portions are formed into inclined surfaces.
A method for manufacturing a decorative board having an uneven pattern according to any one of Items 1 to 3.