JP2000301844A - Manufacture of frp decorative plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form a color design of various type variable patterns by pretreating a front surface of a press formed FRP molded plate to enhance adhesive properties of a coating film, then screen printing the pattern with a rapidly curable ink, coating it with clear paint after curing the printed surface, and finishing it. SOLUTION: To manufacture an FRP decorative plate suitable for a wall panel or the like of a manufactured bath, first an overall surface of a press formed FRP molded plate 1 is wiped with a thinner to remove a mold release agent. Then, an ultraviolet curable ink as a rapidly curable ink 2 is printed by a screen printing method. Then, the printed surface is irradiated with an ultraviolet ray by an ultraviolet illuminator to cure the printed surface. Subsequently, the overall surface of the plate 1 is coated with ultraviolet curable paint as a clear paint 3 by a roll coater, then similarly irradiated with the ultraviolet ray by the illuminator to cure the paint 3, thereby completing the paint 3 to complete a product. According to this, a time required to cure the printed surface by the ink 2 can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a decorative board, and more particularly to a method for manufacturing an FRP decorative board for press-molding a compound to manufacture an FRP decorative board suitable for a wall panel of a unit bath. It is.

[0002]

2. Description of the Related Art Conventionally, this type of manufacturing method includes SMC
(Sheet molding compound), BMC (bulk molding compound), and other materials obtained by spraying a thermosetting paint on the surface of a molded plate obtained by press molding a compression molding material.

[0003] Conventionally, compression molding materials have been known as FRP (fiber).
In the case of reinforced plastics or fiber reinforced plastics), a paint for forming a pattern is kneaded in advance in the compound, and the compound is press-molded to obtain a patterned FR.
It was customary to produce P decorative panels.

[0004]

In order to manufacture such a decorative board, it is desirable that the decorative board be constructed so that it can be manufactured quickly and efficiently.

However, the conventional method, as described above, is a method in which a thermosetting paint is spray-painted on a molded plate, so that it takes time to coat the surface because of the chemical reaction involved in curing the paint. .

[0006] In this type of production method, it is desirable that the color pattern on the surface can be vividly expressed, and that a decorative plate with gloss and good appearance can be produced.

However, in the conventional method, as described above, since spray coating is used, it is usually difficult to clearly show the surface pattern. Also, in the case of FRP decorative boards, the paint is kneaded into the compound to produce a color pattern, and according to this conventional method, no irregularities appear on the surface, and the pattern portion and the area without the pattern are flush with each other. It has become. Therefore, the conventional FRP decorative board has a large problem that the texture and design of the surface are poor and the pattern is produced by kneading the paint. Therefore, according to the conventional method, the decorative board of the same color and pattern cannot be mass-produced. Was.

The present invention has been proposed in view of such problems of the conventional method. Accordingly, the technical problem of the present invention is to improve the productivity by accelerating the curing time of the paint, to easily apply a color pattern in a variety of patterns, to have a texture and gloss, and to further improve the makeup of the same color pattern. An object of the present invention is to provide a method for manufacturing an FRP decorative board formed so that boards can be easily mass-produced.

[0009]

The present invention employs the following technical means in order to solve the above-mentioned problems.

That is, according to the present invention, as shown in FIG. 1, the surface of a press-formed FRP molded plate 1 is subjected to a pretreatment for enhancing the adhesion of a coating film, and then the surface of the molded plate 1 is treated. The pattern is printed by a screen printing method using a fast-curing ink 2 and, after the printing surface is cured, a clear coating material 3 is applied to the entire surface of the molded plate 1 to finish it.

Here, the press-formed FRP plate 1
The term means a resin plate made of FRP (fiber reinforced plastic) manufactured by compression molding a compound. Specifically, SMC (Sheet Molding Compound), B
It is manufactured by press-molding MC (bulk molding compound) and other compression molding materials using a mold.

Here, the pretreatment for improving the adhesion of the coating film means a surface treatment for removing the release agent adhering to the press-formed molded plate 1. Specifically, sanding (the act of polishing the surface with sandpaper or the like), degreasing (the act of wiping off the release agent with a thinner, alcohol, or the like), or primer treatment (applying an undercoat paint so that the coating film easily adheres) Act).

The fast-curing ink 2 means an ink having a property of curing in a short time, and includes an ink having a property of curing in a short time by externally applying a physical or chemical treatment.

Thus, in the case of the present invention, it is preferable that the quick-curing ink 2 and the clear paint 3 are both UV-curable (claim 2).

In this case, the curing time of the ink can be shortened by irradiating the ultraviolet rays, and the curing time of the clear paint 3 can be shortened by using the same ultraviolet irradiation device. Shortening can be further achieved.

In the present invention, printing by screen printing means that a fabric such as synthetic fiber is put on a frame, eyes are closed with a resin or the like except for an image portion, and ink is extruded through an exposed texture. Means printing.

In the case of the present invention, the method of applying the clear paint 3 is arbitrary. The coating is performed by, for example, a roll coater 4 (a coating machine that applies the paint while adjusting the amount of adhesion with a roll) as shown in FIG. It is preferable to use a machine that applies a fixed amount of paint to the surface of the formed plate 1 while feeding the formed plate 1 by a belt conveyor or the like.

In the case of the roll coater 4, as shown in FIG.
Is applied. In the case of the flow coater 5, as shown in FIG. 6, the clear paint 3 is applied to the entire surface of the molded plate 1 with the same film thickness. The application of the clear paint 3 also has the meaning of giving the surface of this type of decorative board waterproof performance.

The clear paint 3 includes, for example, lacquer. This clear coating material 3 is preferably quick-setting. Applications of the decorative board manufactured by the method of the present invention include, for example, a wall panel of a unit bath, a kitchen panel, and a counter panel.

Further, in the present invention, as shown in FIG. 4, it is preferable that the pattern is superimposed and printed, and the printing surface is provided with a height (claim 3).

In this case, it is possible to increase the thickness of the pattern on the surface, and it is possible to manufacture a decorative board with a variety of textures.

Further, in the present invention, it is preferable that the thickness of the printing surface and the thickness of the clear coating material 3 are each in the range of 10 to 200 microns (claim 4).

If the thickness of the printing surface is thinner than this, the molded plate 1
This is because the texture produced by the surface pattern and color pattern is weakened, and if the thickness of the clear paint 3 is thinner than this, the gloss performance is reduced and the function as a surface protective film is impaired. On the other hand, if the film thickness of the printing surface is larger than this, the texture will be overemphasized.
This is because the coating film becomes visibly thicker and suppresses the texture of the printed surface.

[0024]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the entire surface of the press-formed FRP plate 1 (see FIG. 2, etc.) is wiped with a thinner to remove the release agent. In this case, if there is a condensed portion in the release agent, it is sanded and polished and removed.

Next, an ultraviolet curable ink as the fast-curing ink 2 is applied to a film having a thickness of, for example, about 20 by a screen printing method.
Print in micron state. In this case, the screen (stencil) is made of 200 mesh Tetron cloth in this embodiment.

Next, after printing, the operator irradiates the printing surface with ultraviolet rays, for example, for about 30 seconds using an ultraviolet irradiation device (not shown) to cure the printing surface.

Next, an ultraviolet curable paint as the clear paint 3 is applied to the entire surface of the molded plate 1 by a roll coater 4 (see FIG. 3) so as to have a thickness of about 70 μm. Then, about 3 μm is applied to the coated surface by the above-mentioned ultraviolet irradiation device.
The clear paint 3 is cured by irradiating ultraviolet rays for 0 second.

In the case of screen printing, when a pattern is superimposed and printed on the surface of the molded plate 1, first, a screen corresponding to each pattern is prepared. Then, first, for example, a pattern A (see FIG. 4) is screen-printed on the surface of the molded plate 1, and is cured by irradiating ultraviolet rays. Next, the screen of the pattern B is set on the molding plate 1, printed in the same manner, and the paint is cured. This procedure is repeated, and a predetermined color pattern is overprinted on the surface of the molding plate 1.

According to the present invention, as shown in FIG. 5, different patterns can be printed at arbitrary positions on the surface of the molded plate 1 so as to be finished in various surface states. in this case,
For example, a screen corresponding to each of the patterns C to G is prepared, and printing and curing are performed for each of the patterns to complete the printing surface.

[0031]

As described above, according to the method of the present invention, the surface of a press-formed FRP molded plate is subjected to a pretreatment for enhancing the adhesion of a coating film, and then the surface of the molded plate is rapidly cured. The pattern is printed by a screen printing method using the ink described above, and after the printing surface is cured, the clear paint is applied to the entire surface of the molded plate to finish the pattern.

Accordingly, in the case of the present invention, the time required for hardening the printing surface can be shortened with the quick-setting ink, so that the productivity can be improved.

In the present invention, since the pattern is printed by the screen printing method, a variety of colors and patterns can be formed by variously changing the combination of the plates.

In the present invention, a pattern is printed on the surface of a molded plate by a screen printing method, rather than a method in which a paint is kneaded into a compound as in the prior art, and a pattern is formed. FRP decorative boards with patterns can be easily mass-produced.

[Brief description of the drawings]

FIG. 1 is a flowchart showing the steps of the manufacturing method of the present invention.

FIG. 2 is an enlarged vertical sectional view of a main part of the decorative board.

FIG. 3 is a configuration diagram showing a method for applying a clear paint.

FIG. 4 is an enlarged longitudinal sectional view of a main part showing a decorative plate on which a pattern is overprinted.

FIG. 5 is a plan view of a main part of a decorative board on which different patterns are printed on the same surface at different positions.

FIG. 6 is an enlarged vertical sectional view of a main part of a decorative board on which a clear paint is applied by a flow coater.

FIG. 7 is a configuration diagram of a flow coater.

[Description of Signs] 1 FRP molded plate 2 Quick-curing ink 3 Clear paint 4 Roll coater 5 Flow coater

Continued on the front page F-term (reference) 2H113 AA04 BA09 BB07 BC00 CA05 EA07 FA02 FA10 FA36 FA43 FA48 4F100 AR00C BA03 BA07 BA10A BA10C CC00C DD07B DH02A EJ64A GB08 GB09 HB00B HB31B JB14B JB14C JK00 JL00N

Claims (4)

[Claims] 1. A surface of a press-molded FRP plate is subjected to a pretreatment for enhancing the adhesion of a coating film, and then a pattern is printed on the surface of the plate with a quick-curing ink by screen printing. Then, after the printing surface is cured, a clear paint is applied to the entire surface of the molded plate to finish it.
Manufacturing method of P decorative board. 2. The method for producing a decorative FRP plate according to claim 1, wherein the fast-curing ink and the clear paint are both UV-curable. 3. The method for producing a decorative FRP plate according to claim 1, wherein the printed surface is printed with a pattern, and the printed surface is provided with a height. 4. The FRP according to claim 1, wherein:
A method for producing a decorative board, wherein the printed surface and the thickness of the clear paint are each in the range of 10 to 200 microns.