JPS63130168A - Formation of decorative surface - Google Patents

Abstract

PURPOSE:To obtain a decorative surface rich in three-dimensional feeling, by a method wherein masking is applied to the top surface parts of the protruded patterns of an exterior material and a three-dimensional feeling promoting agent is subsequently applied to the exterior material at a predetermined angle, and the masking and promoting agents on the top surface parts are removed to uniformly apply clear paint to the whole of the exterior material. CONSTITUTION:Masking coat paint 6 is applied to the top surface parts 4a of an exterior material 1 such as a color steel plate having an embossed pattern formed to the surface thereof by emboss processing by a roll coater. Next, a three-dimensional feeling promoting agent 8 such as polyester resin paint is sprayed to the decorative surface of the exterior material at an angle theta(e.g., theta=45 deg.) from a spray gun 9. After spraying, the masking coat paint 6 and promoting agent 8 on the top surface parts 4a are wipen off through a wipe-off roller and clear paint 15 composed of polyester resin paint is uniformly applied to the entire surface of the decorative surface. Thereafter, the promoting agent 8 and the clear paint 15 are cured by drying and baking to obtain a product excellent in three-dimensional feeling and generating no rust.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is made of a thin metal plate, a slate plate, a calcium carbonate plate, an asbestos cement and pearlite grains, an ALC plate, etc. having an uneven pattern on its decorative surface. The present invention relates to a method for forming a decorative surface of a panel having an uneven pattern such as a stucco pattern, which can give a more three-dimensional appearance to the decorative surface of each panel.

In general, the decorative surfaces of exterior materials made of thin metal sheets, such as interior and exterior walls, roofing materials, roof decking, rosettes, etc., are flat surfaces, lacquered surfaces, or embossed pattern surfaces, and the decorative surfaces of ceramic panels are flat surfaces, The exterior has a stucco or mastic pattern. Exterior materials using thin metal plates are simply aesthetically pleasing, and the embossed patterns only appear as flimsy uneven surfaces, resulting in poor three-dimensionality and the disadvantages of cracks appearing at the corners of the uneven patterns. In addition, ceramic panels have a more natural feel than thin metal sheets,
It lacks a deep three-dimensional effect and has the disadvantage that it is not easy to form an uneven pattern.

In order to eliminate such drawbacks, the present invention aims to apply a three-dimensional effect enhancer in a directional manner to at least the pretreatment film, the exterior material having a decorative film, or the decorative surface of a ceramic panel, and Wipe off the promoter on the top of the pattern, then apply a transparent paint evenly to the decorative surface, and bake and harden it to visually give the illusion of a deeper uneven pattern surface, while also creating a natural appearance. This paper proposes a method for forming a decorative surface that also creates a sense of beauty.

〔Example〕

Below, the method for forming a decorative surface according to the present invention will be explained in detail using the drawings. FIG. 1(a), crest) is an explanatory diagram showing an example of an exterior material to be formed by the decorative surface forming method according to the present invention. Figure a1 shows the case on an exterior material made of a thin metal plate, and Figure fb1 shows the case on an exterior knife made of ceramic material. To explain further, the thin metal plate 2 may be a surface-treated steel plate, a galvanized steel plate, a galvalume steel plate, a stainless steel plate, an aluminum plate, a copper plate, or a ceramic board 2'.
Examples include gypsum board, slate board, calcium carbonate board,
Calcium silicate half-wall, cement, calcium, aluminate, sulfate, and hydrate as the main raw materials, mixed with pulp, glass fiber, and perlite, asbestos-cement calcium silicate board, foamed concrete board, high-strength cement inside These are plates made of cement plates containing alkali-resistant glass fibers, asbestos cement mixed with pulp and perlite, etc. Further, the surface of the exterior material has a concavo-convex pattern 5 consisting of a concave pattern 3 and a convex pattern 4. A masking coat 6 is applied to the top surface 4a of the convex pattern 4 on the exterior material using a roll coater, as shown in FIG. The masking coat 6 temporarily covers the color and pattern on the top surface 4a and is finally wiped off to expose the top surface 4a directly to the decorative surface, and has a viscosity that does not flow into areas other than the top surface 4a, and It is made of a material that can be wiped off and does not adversely affect the cosmetic surface. Specific examples include paint, P
It consists of one type such as VA and water (shimesudake).

Reference numeral 8 denotes a three-dimensional effect enhancer (hereinafter simply referred to as an enhancer), which has directionality in at least a portion or a corresponding portion of the side surface portion 4b of the convex pattern 4, as shown in FIGS. 3(a) and 3(b). Or, in addition to the above, it is distributed over one or more parts of the bottom surface 3a of the concave pattern 3. To explain further, the enhancer 8 adds a shading function to the uneven pattern 5 in addition to the visual element, that is, the mechanical uneven pattern, to create a deeper and more three-dimensional cosmetic surface. It is for. The material is one that is at least slightly different in color and density from the decorative surface, such as paint or asphalt. In addition, as for the application method, a third spray gun 9 is used so as to collide with the direction of travel on the exterior material at an angle θ.
The promoter 8 is installed as shown in Figure (al), or applied with a roll coater 10 as shown in Figure fb1, or a curtain flow coater (not shown).In this case, the moving speed on the exterior material is the same as that of the roll. The speed is such that the promoter 8 applied by the coater 10 and the curtain flow coater is not applied to at least a part of the side surface 4b of the convex pattern 4. 11 is a wiping opening, as shown in FIG. The uncured masking coat 6 and promoter 8 present on the top surface 4a are wiped off.

Its structure consists of a wiping roller 11, a roller 13 for storing a solvent 12, and a doctor knife 14, and at least one stage, and if necessary, multiple stages (not shown) are installed in parallel. Reference numeral 15 denotes a transparent paint, and as shown in FIG. It is applied to a uniform thickness. To explain in more detail, the transparent paint 15 is made of synthetic resin paint and is applied to the entire decorative surface. In particular, even when the occurrence of rust occurs at the corners of an uneven surface, the transparent coating 15 can be used to coat the occurrence part of the crank to prevent rusting, and even when embossing is performed under harsh conditions. This makes setting the embossing conditions very easy. Further, due to the synergistic effect of the transparent paint 15 and the promoter 8, the exterior material has an improved gloss, depth and three-dimensional effect. Reference numeral 17 dries the promoter 8 present in the concave pattern 3 on the exterior material and the transparent paint 15 applied to the entire decorative surface as shown in FIG. 6 using a heater.
Or baking is equivalent, and specific examples thereof include hot air method, direct flame method, or hot wire method.

Next, an embodiment of the method for forming a decorative surface according to the present invention will be described. Currently, the exterior material is a 0.271 m thick colored steel plate (a board with white alkyd resin baked into it) that is wound into a coil, and an uneven pattern 5 with a depth of 0.9 fins is embossed on its surface. Suppose that it is formed by Therefore, as shown in Fig. 2, the exterior material is conveyed in the direction of arrow A at a speed of 60 m/min via a conveyor, and a color close to white (masking coat paint 6) is coated on the top surface 4a with a roll coater. Apply at step 7. Next, see Figure 3 (
As shown in a), the promoter 8 (polyester resin paint) is sprayed from the spray gun 9 at an angle θ=45° onto the decorative surface, especially the uneven pattern 5, which moves in the direction of arrow A at the same speed as above. In this case, the promoter 8 is distributed on the top surface portion 4a and the side surface portions 4b, which are perpendicular to one spray direction of the spray gun 9, and on the bottom surface portion 3a. In other words, the promoter 8 is not present at all in the portions of the side surface portion 4b that are not perpendicular to one direction of spraying, and in other portions, the promoter 8 is present to some extent depending on the angle.

Next, as shown in FIG. 4, the masking coat 6 and promoter 8 present on the top surface 4a are wiped off using the wiping roller 11, and the transparent paint (
The polyester resin paint) 15 is applied, and as shown in Fig. 6, it is sent to the process of drying and baking on the exterior material, and then the facilitator 8 is applied.
The transparent paint 15 is cured and sent out as a product.

[Other Examples]

What has been described above is only one embodiment of the method for forming a decorative surface according to the present invention.
It can be formed on an exterior material having an uneven pattern 5 having a stepped structure. For example, in FIG. 7(a), the promoter 8 applied to the top surface portion 4a lower than the top surface portion 4a' may be formed so as not to be wiped off. Further, the hardness of the rubber, sponge, etc. of the roll coater 7 and the wiping roller 11 can be selected depending on the purpose. Although only the top of the exterior material is shown in FIGS. 2 to 7, the exterior material 1' can also be formed in the same manner.

〔Effect of the invention〕

As described above, according to the method for forming a decorative surface according to the present invention,
It is extremely easy to form directional visual shadows on the uneven pattern, resulting in a decorative surface with a deep and three-dimensional effect. Furthermore, since the promoter can be sprayed at any angle, it is possible to easily form decorative surfaces with various shades. Furthermore, as a final coating, a transparent paint is applied to the entire decorative surface, which can cover cracks in the decorative film that occur when embossing thin metal sheets, even on metal sheets that have been severely embossed (deep embossed). It is safe to use and has the feature of preventing rust.

[Brief explanation of the drawing]

FIGS. 1(al) and 3(b) are enlarged end views showing an example of the exterior material used in the decorative surface forming method according to the present invention, FIGS.
Figures (a), (b), and Figures 4, 5, and 6 are explanatory diagrams showing each step of the decorative surface forming method according to the present invention, and Figure 7 (a).
) and (b) are explanatory views showing other shapes of the exterior material. Top, A...Exterior material, 5...Irregular pattern, 7...Roll coater, 8...3D effect enhancer, 15...Transparent paint. Fig. 7 (α2 Fig. 3 (to) Fig. + Fig. 5c (l Fig. 6 Fig. 7)

Claims (1)

[Claims] (1) For an exterior material that has an uneven pattern on its decorative surface, a masking coat is applied to the top surface of the convex pattern of the exterior material using a roll coater, and then a three-dimensional effect enhancer is applied at an acute or obtuse angle to the decorative surface. After that, the uncured masking coat and three-dimensional effect promoter are wiped off on the top surface, and then the transparent paint is applied almost uniformly to the decorative surface, and then the three-dimensional effect enhancer and the transparent paint are dried. , a method of forming a decorative surface characterized by baking and hardening.