JPS6043789B2 - Manufacturing method of colored uneven pattern board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a colored uneven pattern board.

More specifically, the present invention relates to a method for manufacturing a colored plate with a concavo-convex pattern in which the convex and concave portions of the concave-convex pattern have different tones. Conventionally, in manufacturing a colored plate with a concave-convex pattern in which the convex portions and concave portions have different color tones, a substrate 5 in which the convex portions 6 of the concave-convex pattern are flat as shown in FIG. 1 has been used.

Therefore, even if the paint 4 is applied to the entire uneven pattern surface, there is little flow of the paint 4 from the convex portions 6 to the concave portions 3, and it is difficult to see a difference in color tone between the concave portions 3 and the convex portions 6, especially when the area of the convex portions 6 is This tendency was remarkable when the area was wide. Therefore, if you want to create a difference in color tone between concave and convex areas, it is necessary to apply vibration to the board after applying the paint or blow air onto the board surface to make the paint flow from the convex parts to the concave parts. The process was complicated. The present invention has been made in view of such conventional drawbacks, and its first purpose is to provide a method for manufacturing a colored uneven patterned board having a difference in color tone between concave and convex portions, The purpose is to create a colored uneven pattern board that can produce a colored uneven pattern board in which the concave and convex parts have a difference in color tone through a simplified process without applying vibration to the substrate or blowing air onto the substrate surface. to provide manufacturing methods.
That is, the present invention specifies a method for manufacturing a colored uneven pattern board, which is characterized by applying paint to the entire pattern surface of a substrate having an uneven pattern and inclined convex portions. Apply a colored paint to the entire patterned surface of the substrate with an inclined surface, dry the colored paint until it is at least dry to the touch, and then apply a colored clear paint that is a different color from the colored paint to the entire painted surface of the colored paint. The method of manufacturing the characteristic colored uneven pattern board is a combined invention.

The present invention will be explained in detail below.

In the specific invention of the present invention, the inclined convex portion 2 of the substrate 1
The paint 4 applied to the convex part 2 flows down into the concave part 3 along the slope regardless of the area of the convex part 2, and the thickness of the paint film becomes thicker as the depth of the concave part 3 increases, and as a result, the paint gradually decreases. The color becomes richer.

On the other hand, due to the paint 4 remaining on the inclined surface of the convex portion 2, the convex portion 2 takes on a light color tone. In addition, in the combined invention, the color clear paint applied to the inclined convex portion of the substrate through the colored paint naturally flows into the recess, and the thickness of the coating film formed by the flowing color clear paint is equal to the depth of the recess. As the color increases, it becomes thicker, and as a result, the color tone of the color clear paint gradually becomes richer. On the other hand, a small amount of color clear paint remains on the sloped surface of the convex portion, but since the color clear paint has significantly greater transparency than the colored paint, the slope mainly exhibits the color of the underlying colored paint.
Therefore, according to the present invention, the concave portions and the convex portions have different color tones,
Moreover, it is possible to form a profound and deep pattern as a whole. First, a substrate with inclined convex portions used in the present invention will be described.

As the substrate, a molded architectural board material having an uneven pattern formed on the board surface can be used. These are usually carried out by wet and dry methods, such as asbestos cement board, asbestos calcium silicate board, valve cement board, wood wool cement board, wood powder cement board, gypsum board, rock wool board, glass fiber reinforced cement board, etc. In the molding process, pressing, embossing, pouring, etc. are carried out using a mold that forms the uneven pattern, thereby making it possible to manufacture the molded board in a process that is almost the same as that of conventional molded architectural board materials. In particular, an asbestos cement board produced by a wet method has high strength and is suitable as a substrate for use in the present invention. More specifically, as shown in FIG. 3, for example, a template 8 having a concavity 7 with an inclined surface is pressed together with a raw board 9, such as an asbestos cement board, and then cured and dried to form a substrate. do. At this time, as the template, an asbestos slate template, a plastic plate, a mold plate, etc. are used. Further, the base material formed as described below can also be used. That is, substrates with smooth surfaces, such as plywood, particle board, hardboard, valve cement board, asbestos slate, precast concrete board, foamed concrete board, steel board, galvanized steel board, aluminized steel board, aluminum board, etc. Then, use a mortar gun to spray paint the following spraying material in an uneven pattern.
The spray coating is performed using a mortar gun with a nozzle diameter of about 2 to 12 mIn and at a spray pressure of about 1.5 to 10 kg/Cfl. At this time, there is a method of forming an uneven pattern layer with one coating, or a method of applying a spraying material diluted to a slightly low viscosity to an almost uniform thickness over the entire surface of the board, and then applying the spraying material in scattered spots. Alternatively, a method can be used in which the spraying material is applied dotted on the substrate surface and then the spraying material diluted to a slightly lower viscosity is applied to the entire surface to a substantially uniform thickness. Application amount is 500-3
Approximately 000g/i is suitable. (a) While the spray material is in a semi-cured state, press only the convex portions of the uneven pattern with a roll, trowel, hand roller, etc. so that it is moderately inclined, or (b) When the spray material is completely dry. Afterwards, only the convex portions of the concavo-convex pattern are cut or polished with a knife edge, a sander, etc. so that they are moderately inclined, thereby forming a concavo-convex pattern in which the convex portions are inclined. Examples of the above-mentioned spray material include commercially available tile-shaped spray materials. The spraying material is mainly composed of inorganic and/or organic binders and aggregates,
Color pigments, inorganic powders, etc. are mixed as necessary to adjust the viscosity to a level suitable for spray painting with a mortar gun. The spraying material is, for example, JIS-A691O.
Multi-layer pattern sprayed materials C (using cement-based binding material), E (using synthetic resin emulsion-based binding material), RE (
reaction curing synthetic resin emulsion type binder) and R
S (using a reaction-curing synthetic resin solution-based binder), or C, . Examples include a mixed composition of two or more of E and RE. Next, the paint used in the present invention will be explained.

In the present invention, when a layer of paint is applied to a substrate, it may be transparent or opaque, but it is preferable to use opaque paint. Further, colored paints, color clear paints, etc. used in the following two-layer coating may also be used. When applying the following colored paint to a substrate in a single layer, it is preferable to use the same viscosity as that of the colored clear paint described below. Next, after applying colored paint to the board,
Each paint used when applying color clear paint will be explained.

The colored paint may be any of water-based paints, organic solvent diluted paints, high solid paints, non-solvent paints, and powder paints, including known water-soluble acrylic melamine paints, acrylic emulsions, vinyl acetate emulsions, and vinyl acetate acrylic copolymer emulsions. Water-based paints such as acrylic, acrylic urethane, polyester urethane, acrylic melamine, vinyl chloride resin, epoxy resin, etc., and high solid paints such as melamine, acrylic, and epoxy. Alternatively, powder coatings and epoxy non-solvent coatings can be used.

The colored paint is applied under normal coating conditions to obtain a uniform coating film. In this case, the substrate is generally porous;
Also, although the extent of this difference varies, those skilled in the art will be able to easily adopt various modifications. For example, on a substrate with large suction, a uniform colored coating film can be formed even with a colored coating material having a viscosity comparable to that of the color clear coating material. Also. By applying colored paints adjusted to several different viscosities, it is possible to easily determine the appropriate coating viscosity for the substrate. In general, if the coating viscosity is too high, the coating workability will be reduced, and if it is too low, the coating will tend to flow after coating, and in either case, it tends to be difficult to achieve a homogeneous coating. When using a water-based paint as a coloring paint, the solid content concentration should be 20 to 7% by weight, in the case of a high solid type paint, it should be about 8% by weight, and in the case of a non-solvent type paint, it should be 90 to 10% by weight. Preferably, the amount of saliva is %. The color clear paint used in the present invention contains dyes normally used for coloring plastic moldings and/or organic and inorganic coloring pigments used in colored paints as a coloring agent, based on the solid content of the resin. .01～
Preferably, the content is 15% by weight.

In the above, if the amount of colorant is less than 0.01% by weight, it is difficult to obtain a sufficient change in color tone;
If the amount increases, the transparency of the formed coating film will decrease, making it difficult to obtain a deep color change. In particular, the amount of the colorant is preferably about 0.05 to W% by weight. In addition, when the architectural molded board material obtained by the method of the present invention is used for the exterior of a building, it is required that the coating film does not fade, so it is preferable to use inorganic and organic pigments as the coloring agent. ．． In addition, the resin components of color clear paint include:
The same water-based resins and organic solvent-diluted resins as the colored paints can be used. Next, the manufacturing process of the colored uneven pattern board according to the present invention will be explained.

First, when applying a layer of paint to the board. To do this, paint is applied to the entire surface of the substrate, and while the substrate is held horizontally or almost horizontally, the paint on the inclined convex portions is allowed to flow down into the concave portions. It is then dried to form a coating film. For the coating, conventional methods such as spray coating, flow coating, shower coating, and roll coating with a flexible surface layer can be used. In particular, a method of painting while transporting the substrate using a transport device such as a conveyor is suitable for industrial manufacturing. Note that different paints may be applied to the concave portions and convex portions. Next, the case of applying colored paint and color clear paint will be explained. In this case, a colored paint is first applied to the substrate, and this coating may be done by spray coating, flow coating, shower coating, etc., as described above. The amount of the colored paint to be applied is preferably the amount used in normal coating, for example, the amount that gives a dry film thickness of about 5 to 100 microns. If the dry film thickness is less than 5 μm, it will be difficult to achieve uniform coloring, and if it is thicker than 100 μm, not only will paint be wasted, but it will also be difficult to dry the paint film uniformly. Subsequently, the colored paint is dried to a state that is more than dry to the touch.

This is to prevent the colored paint film from being redissolved by the solvent or dispersion medium of the color clear paint and causing color bleeding when the color clear paint is applied in the next step. The required degree of dryness varies depending on the solubility of the solvent or dispersion medium, but any dryness may be used as long as the dryness does not substantially cause color bleeding. The drying method may be either normal temperature drying or heat drying, but in the case of factory painting, it is preferable to use a hot air dryer, an infrared dryer, or the like. Particularly suitable is a method in which the coated substrate is dried while being conveyed by a conveyor. Next, with the painted surface facing upward and the substrate horizontally or almost horizontally, for example, a food cup No. A color clear paint (having a solid content of 1 weight percent or more and having a different color from the colored paint) having a viscosity of 0 seconds or less (paint temperature 20°C) according to 4 is applied to the entire surface of the painted surface. As a coating method, the same method as in the case of the colored paint can be used. In this case as well, the method of conveying the painted substrate while conveying it is as described above.
Suitable for factory painting. The coating amount of the color clear paint is preferably about 50 to 1000 g/d (however, the area means the area of a plane parallel to the uneven pattern substrate). If the viscosity of the color clear paint (Food Cup No. 4, 20°C) is greater than 30 seconds, the fluidity of the color clear paint will be insufficient, and the change in color tone between the sloped surface of the convex portion and the concave portion will be insufficient. easy to become On the other hand, the lower the viscosity of the clear paint, the better its fluidity, but in order for the clear paint to flow down into the recesses and provide the necessary coloring, it is preferable that the solid content be at least 1% by volume. The viscosity of the paint is almost the same as that of a general organic solvent (about 8 seconds). If the applied amount of the color clear paint is more than 1000 g/a, the color clear paint unnecessarily closes the recesses, resulting in a decrease in the three-dimensional effect especially when viewed from an oblique direction. On the other hand, if the coating amount of the color clear paint is less than 50 g/a, it will not be possible to obtain a sufficient change in color tone depending on the height difference of the three-dimensional surface. In particular, it is preferable that the viscosity is about 9 to 10 seconds and the coating amount is about 80 to 500 g/d. Subsequently, the substrate is held in a horizontal or nearly horizontal state, and most of the color clear paint on the sloped surface of the convex portion is allowed to flow down into the concave portion. Finally, let the above paint dry. The same drying method as for colored paints can be used. In particular, while the color clear paint has high fluidity, it is necessary to dry the substrate while keeping it horizontal or almost horizontal so that the color pattern formed by flowing the color clear paint does not collapse. be. The above-mentioned color clear paint and colored paint are used in combination with mutually different colors. In particular, if the color clear paint has the same hue as the colored paint, but has slightly different lightness and/or saturation, a deep pattern will be formed. The present invention will be explained below with reference to Examples.

Prior to the Examples, compositions for molding asbestos cement boards, spray materials for construction, colored paints, and color clear paints were prepared as described above.

In the following, 1 part and 1% are parts by weight and % by weight, respectively.
It is shown with. [Composition for molding asbestos cement board] 65 parts of cement, 35 parts of asbestos, and 32.5 parts of water were uniformly mixed to prepare a molding composition.

The molding composition is used for molding immediately after preparation. [Architectural spray material] 14 parts of thickener aqueous solution (1% solution) with an average particle size of approximately 26
45 parts of 0 mesh silica powder and 25 parts of silica powder with an average particle size of about 80 mesh are mixed with stirring, and then w parts of epoxy resin emulsion (50% aqueous solution) are added to form a homogeneous mixture.

Separately, 6 parts of polyamine are prepared, and immediately before use, the two are uniformly mixed and applied to spray coating.

[Colored paint A]

Acrylic copolymer resin emulsion (
Colored coating material A was prepared by uniformly mixing 4 colored pigments (average molecular weight: about 600001, solid content: 50%), water, film-forming aids, etc.

[Colored paint B]

Acrylic copolymer resin varnish with the formulation shown in Table 2 (average molecular weight approximately 1500, resin content 50% solution, butyl acetate 38%).
57% xylene, 42.85% xylene, and 3.57% methyl isobutyl ketone) and a colored pigment were uniformly stirred and mixed to prepare colored paint B.

[Color clear paint A]

Color clear paint A was prepared using the acrylic copolymer resin emulsion used in the preparation of colored paint A with the formulation shown in Table 3.

[Color clear paint B]

Color clear paint B was prepared using the acrylic copolymer resin varnish used in the preparation of colored paint B with the formulation shown in Table 4.

Using the molding composition, architectural spray material, colored paint, and color clear paint prepared as described above, colored patterned plates were prepared according to the following Examples.

Example 1 Using the composition for molding an asbestos cement board, a thickness of about 6W was formed by a normal pressing method! An asbestos slate plate having smooth surfaces on both sides was molded, and then, while the slate plate was in a semi-hardened state, a concavo-convex pattern was molded on one side by an embossing method.

After the obtained slate board with inclined convex parts is completely cured, the board is preheated in a hot air drying oven to a temperature of about 50°C while being transported on a conveyor with the uneven pattern side facing upward, and colored paint B is immediately applied to the entire surface. Painted uniformly with flow coat, set in about 1 minute, and then heated in a hot air drying oven at 80℃ for 1 minute.
The coating film was dried by passing through the powder. Next, flow coat the entire surface with color clear paint B at a coating amount of 100 g/d.
After setting for a minute so that most of the clear paint on the sloped surface of the convex part flowed down into the concave part, the paint was dried by heating in a hot air drying oven at 80° C. for one minute. The colored concave-convex patterned board had a pale cream color on the sloped surfaces of the convex portions, and the yellow tone gradually became darker as the depth of the concave portions increased, giving the entire plate a profound depth.

The dry film thickness of the colored paint was 50μ.

Example 2 After cleaning the surface of a commercially available asbestos slate board, the construction spray material was adjusted to a viscosity of 150 poise (25°C) and a mortar gun (caliber 7Tn!n1 pressure 5k9/Clt) was used to form convex portions. Partially applied.

When the convex parts are dry to the touch, the architectural spray material is diluted with water to adjust the viscosity to 55 KU (at 25°C) and applied to the entire surface with a spray gun (caliber 3T0ft1 pressure 4K9/Clt) to form an uneven pattern surface. was formed. When the uneven patterned surface was semi-hardened, a template was applied to the entire surface and pressed to form an uneven pattern with inclined convex portions.

After completely curing this uneven pattern layer, it was transferred to an infrared drying oven at a board surface temperature of 60°C while being conveyed by a conveyor as in Example 1.
The sample was preheated to 0.degree. C., and colored paint A was immediately spray-coated uniformly over the entire surface, and immediately passed through an infrared drying oven until the paint was dry to the touch. Next, color clear paint A was spray-painted on the entire surface at a coating amount of 200 g/d, and after setting for 5 minutes and most of the clear paint on the sloped surface of the convexity flowed down to the concave part, it was heated once in an infrared drying oven. and let the paint dry. The obtained decorative board had a pale green color on the sloped surfaces of the convex portions, and the green color of the concave portions gradually became darker and deeper as the depth increased.

The film thickness of the colored paint, which was measured after being completely dried separately, was about 30 microns.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a conventional example, FIG. 2 is a vertical cross-sectional view of an embodiment of the present invention, and FIG. 3 is a vertical cross-sectional view of an example of manufacturing a substrate according to the present invention.

Claims (1)

[Scope of Claims] 1. A method for producing a colored uneven pattern board, which comprises applying a paint to the entire pattern surface of a substrate having an uneven pattern and sloped convex portions. 2. Apply a colored paint to the entire patterned surface of a substrate with an uneven pattern and inclined convex parts, dry the colored paint until it is at least dry to the touch, and then apply a colored paint to the entire coated surface of the colored paint, which has a different color from the colored paint. A method for producing a colored uneven pattern board, which is characterized by applying a colored clear paint.