JPH0557864A - Resin-coated decorative panel and production thereof - Google Patents

Abstract

PURPOSE:To obtain high design effect by emphasizing the controur and depth of a recessed groove pattern part by coating the surface of a base material with a colored transparent resin film inclusive of the recessed groove pattern part thereof and forming a depressed part reaching the interior of the recessed groove pattern part to the resin film. CONSTITUTION:A first recessed groove pattern 2 is formed to a base material 1 and a colored resin material 2 is applied to the surface of the base material 1 in the state filling the recessed groove pattern 2. After the resin material 3 is cured, second recessed groove forming processing is performed to form a second recessed groove, that is, a depressed part 4. Whereupon, the resin material 3 of the depressed part 4 is removed. By this method, a recessed groove wherein the thickness t2 of the inside wall part of the recessed groove pattern 2 is sufficiently larger than that of the other part, that is, the thickness t1 of the flat surface part of the base material 1 and the thickness t2 of the bottom part of the recessed groove pattern 2 with respect to the thickness of the resin material 3 is formed to the surface of the base material 1. As a result, the color density of the contour of the recessed groove pattern 2 is especially darkly bordered and difference in level and an uneven feeling can be emphasized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-coated decorative board and a method for manufacturing the same, and more particularly, to make it possible to visually recognize an edge portion of a concave groove pattern formed on the surface darker than other portions. By doing so, the present invention relates to a resin-painted decorative board excellent in design in which the unevenness of the groove is emphasized and a method for manufacturing the same.

[0002]

2. Description of the Related Art A resin-coated decorative board is known in which a pattern is applied to a wood-based material or a plastic material as needed, and a coating resin solution is poured onto the surface and cured, and such a resin-coated decorative board is known. For the purpose of imparting a high degree of designability, a decorative plate that is embossed on the resin surface using an embossing film or a decorative plate that is further subjected to wiping printing is also known in order to form irregularities on the surface.

[0003]

However, the decorative board which has been subjected to the uneven processing by the above-mentioned method has an appearance of unevenness which is the formed uneven shape itself, and the size of the unevenness is limited in the molding process. Since it is a thing, it was not possible to obtain a decorative plate having a sufficient sense of unevenness in terms of design. Also, in the case of wiping printing, since the recesses are filled with colored ink, the presence of the recesses is colored and emphasized, but the actual depth of the recesses is filled and becomes shallower. There was a problem that the contrast of the image was reduced.

In view of the above problems, the present invention actually realizes a decorative plate having a groove-shaped concavo-convex pattern formed on its surface by making the contour portion of the concavo-convex pattern visually darker than other parts. As described above, it is an object of the present invention to obtain a resin-painted decorative board having a high design property in which the depth of the concave and convex groove pattern is emphasized so that it can be seen, and a manufacturing method thereof.

[0005]

In order to achieve the above-mentioned object, the present invention was applied to the surface of a base material having at least a concave groove pattern on the surface and the concave groove pattern portion. And a colored transparent resin coating film, wherein the colored transparent resin coating film forms a concave portion along the length direction of the groove in the concave groove pattern portion and the bottom portion thereof reaches the inside of the groove. Disclosed is a resin-coated decorative board.

A resin-coated decorative board having a higher design property can be obtained by using a base material having a printed decorative paper attached to the surface thereof. The present invention further includes a step of forming one or a plurality of concave groove patterns on the surface of the base material, a step of pouring a colored transparent resin liquid onto the surface of the base material in a state where the concave groove patterns are also embedded, Also disclosed is a method for producing a resin-coated decorative board, which comprises a step of curing, and a step of removing a colored transparent resin embedded and cured in the concave groove pattern along the groove while leaving the resin in the groove. To do.

As a first step, it is an effective mode to obtain a molded article having a more attractive design by further including a step of sticking a decorative paper printed on the surface of the base material. The substrate used in the present invention is not particularly limited, but is preferably particle board, MDF (Medium Density Fib).
er Board-medium density fiber board), plywood, wood base materials such as integrated materials, PVC, foamed PVC, urethane, polypropylene, ABS resin, polystyrene, AS resin and other resin materials. Further, they can be used alone, and in consideration of the design, they may be those in which a pattern is formed by printing or transferring directly on the surface of the base material. Alternatively, a decorative sheet, which will be described later, may be attached to the surface of the base material.

As a decorative sheet to be attached to the surface of a base material,
Although the decorative sheet that has been used in the manufacture of conventional decorative laminates may be used as ^{appropriate, 23g / m 2 ~50g / m} 2 paper, tissue ^{paper, 50g / m 2 ~120g / m} 2 of titanium paper, PVC,
It is particularly preferable to use titanium paper obtained by printing a gravure ink, a silk screen ink, etc. on a resin sheet such as PET by a known technique because the content of the colored transparent resin liquid in the subsequent step is excellent.

A groove pattern is formed on such a base material or a base material to which a decorative sheet is attached. The groove pattern and its processing method can be carried out by appropriately using a means capable of forming a groove pattern having a required shape and size. For example, in the case of a wood grain siding-like decorative material, the pattern shape is parallel at regular intervals. A groove pattern such as a linear groove (joint groove) formed with multiple tiles, a tile joint groove in the case of a tile-like decorative material, or a travertine concave hole shape in the case of a travertine marble-like decorative material is preferable. Yes, such a groove pattern is cut by a numerical control router or an appropriate cubic curved surface processing machine, and depending on the material of the base material, embossing by press molding, vacuum forming, pneumatic forming etc. ..

A colored transparent resin liquid is poured onto the surface of the base material in a state where the groove pattern is also embedded in the base material on which the groove pattern has been formed. As the coating resin liquid to be poured, unsaturated polyester resin, for example, unsaturated polyester resin obtained by cross-linking the esterification reaction product of phthalic acid and polyhydric alcohol with cobalt naphthenate peroxide, polyurethane, epoxy, various polysynthetic compounds. It is possible to use various known resins such as acrylics such as monomers or prepolymers such as polyfunctional urethane acrylates and polyester acrylates having a saturated bond, and aminoalkyds. The pouring method may be a normal method such as float or spray coat,
When an anaerobic curable one such as unsaturated polyester is used, it is preferable to use a method called a Mylar method or a film method in which a resin coated with a film is covered and cured in an anaerobic atmosphere. ..

As the colorant mixed in the resin material, a pigment or dye which does not hinder the curing of the resin may be used.
Any organic or inorganic pigment or dye such as yellow, red or blue can be used, and further, a metal powder pigment, a pearl pigment,
The same effect can be obtained by using a bright pigment such as a light interference foil powder pigment such as marl powder. Such a coloring material is mixed by adjusting the addition amount so that it becomes colored and transparent to the extent that the underlying substrate can be seen through.

The colored transparent resin liquid poured onto the surface of the substrate is then cured. The curing means may be appropriately selected depending on the characteristics of the resin liquid used, and examples thereof include drying of the solvent, two-component reaction by addition of a crosslinking agent such as isocyanate, crosslinking by heating, polymerization reaction, crosslinking by ultraviolet rays or electron beams. Curing or a combination thereof is appropriately selected and used.

When a film that covers the resin surface is used after the paint, that is, the colored transparent resin material is cured, the film is removed and then embedded in a concave groove pattern formed in the base material and cured. The transparent resin is removed along the groove while leaving the resin in the groove to form the groove again. This second recess forming process is preferably a cutting process in order to reduce the influence on other parts of the coating film, but it is not always necessary to use a cutting process as long as it can form the shape of the groove to be described later. Absent.

The second recess forming process will be described with reference to FIG. FIG. 1 schematically shows a part of the cross section of a decorative plate produced by the method of the present invention. In the figure,
Reference numeral 1 is a base material, and the above-mentioned first concave groove pattern 2 is formed on the base material, and the colored transparent resin material 3 is applied to the surface of the base material in a state where the concave groove is also filled. After the resin material is hardened, the above-described second groove forming process is performed to form the second groove 4. In the figure, the colored transparent resin at the portion 4 shown by the crossed diagonal lines is removed by the second groove forming process. By performing such processing, as is apparent from the drawing, the thickness of the colored transparent resin 3 and the thickness portion t ₂ of the inner wall portion of the concave groove ₂ are
The thickness of the other part, that is, the thickness of the flat surface part of the substrate t ₁
Also, a groove having a shape having a thickness sufficiently larger than the thickness t ₃ of the bottom portion of the groove 2 is formed. As a result, the color density of the contour of the concave portion is visually perceived to be particularly darker than that of the other portions, and the step difference of the concave groove 2 portion is emphasized. Can be given to those who see.

In particular, in order to emphasize the color density of the edge portion, it is desirable that t ₂ >> t ₃ > t ₁ .

In other words, the recess width during the second groove processing is made narrower than the recess width during the first groove processing on the base material, and the two recesses are located between them. It can be said that it is a processing mode in which it is vertically overlapped with a residual coating layer, and when such processing is performed using a cutting machine such as a three-dimensional curved surface processing machine, the processing machine is a base machine. Once the absolute position of the material is determined, it can be easily performed by simply changing the Z-axis (height direction axis) direction position of the cutting blade at the same position.

In FIG. 1, the decorative board in which the colored transparent resin liquid is poured directly onto the base material 1 has been described. However, as described above, a decorative board or a decorative board having a pattern formed by printing or transfer is applied. It will be easily understood that the same applies to the case where the sheet is attached to the surface of the base material.

[0018]

According to the present invention, one or more concave groove patterns 2 are formed on the surface of the base material 1, and the colored transparent resin liquid 3 is applied to the surface of the base material in a state where the concave groove patterns 2 are also embedded. Pouring,
After the resin liquid 3 is cured, the colored transparent resin hardened by being embedded in the concave groove pattern 2 is partially removed along the groove while leaving the resin in the groove. Groove 2
The thickness t ₂ of the colored transparent resin 3 on the inner wall of the substrate is smaller than the thicknesses of other portions, that is, the thickness t ₁ of the flat surface portion of the base material and the thickness t ₃ of the bottom portion of the concave groove 2. It is sufficiently thicker than (particularly t ₁ ), and as a result, the color density of the contour of the concave portion is visually perceived to be particularly darker than the other portions. Thereby,
The stepped portion of the groove 2 is emphasized, and it is possible to give a feeling of unevenness deeper than it actually is.

[0019]

EXAMPLES The present invention will be described below based on examples.

[0020]

Example 1 A decorative paper in which a pattern 11 was gravure-printed on a titanium paper 10 of 80 g / m ² was attached to an MDF board 1 having a thickness of 15 mm. As the adhesive 12, an ethylene vinyl acetate copolymer resin-based material was used (FIG. 2a). After positioning the above MDF board, use the numerical control router to make a U-shaped joint pattern on the siding board.
The groove shape 2 was cut linearly in the longitudinal direction of the MDF plywood.
The U-shaped groove had a width of 20 mm and a depth of 6 mm, and was molded so that the tip of the U-shaped groove was located 100 mm inward from the longitudinal end of the MDF plywood (FIG. 2b).

About 50 parts of a colored transparent polyester resin 3 obtained by adding 5 parts of a brown pigment to 100 parts of the polyester resin.
The vinylon film 13 was cast on the wood grain pattern so that the coating amount was 0 g / m ² . afterwards,
A roller was pressed from the upper portion of the vinylon film so that 13 of the polyester resin was embedded in the U groove, and the surface was evened (FIG. 2c).

After curing the polyester resin, the vinylon film was peeled off (FIG. 2d). Using the same numerical control router as above, after repositioning the above decorative plate at the same position as the initial position, increase the height of the cutting edge by 1 mm (Z axis direction) and make the cutting width 18 mm. The diameter of the blade was changed, and the same position as the previous time was cut to form the second groove 4. The coating film 14 of the colored transparent polyester resin remained on the entire surface of the surface of the recess formed by the first cutting process.

The contoured portion of the edge of the U-shaped groove portion of the formed decorative sheet has a darker brown color than other portions, and the appearance of the concave groove is emphasized in appearance, and a high design feeling is obtained. It was

[0024]

Example 2 A door was made using the polyester decorative board made in Example 1. A highly designed door was obtained in which the groove was emphasized as a brown stripe accent pattern (Fig. 3).
At the same time, since this groove was completely covered with polyester resin, it functioned effectively as a handle for opening and closing the door.

[0025]

EFFECTS OF THE INVENTION Since the thickness of the colored transparent coating film is significantly thicker on the inner side wall of the molded groove as compared with the other portions, the color density of the contour of the groove is rimmed particularly deeply. By the way, since the depth of the concave groove is visually emphasized, it is possible to obtain a decorative plate with high design.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a main part of a decorative board manufactured according to the present invention.

FIG. 2 is a diagram showing, for each step, one embodiment of a method for manufacturing a decorative board according to the present invention.

FIG. 3 is a perspective view when the decorative plate according to the present invention is used for a door.

[Explanation of symbols]

1 ... Substrate, 2 ... Recessed groove pattern, 3 ... Colored transparent polyester resin, 4 ... Recessed portion (second recessed groove), 10 ... Titanium paper,
11 ... pattern

Claims (4)

[Claims] 1. A base material having a concave groove pattern on at least the surface thereof, and a colored transparent resin coating film applied to the surface of the base material including the concave groove pattern portion. A resin-painted decorative board, characterized in that in a concave groove pattern portion, a concave portion is formed along the length direction of the groove and the bottom portion thereof reaches the inside of the groove. 2. The resin-coated decorative board according to claim 1, wherein a printed decorative paper is attached to the surface of the base material. 3. A step of forming one or a plurality of concave groove patterns on the surface of a base material, a step of pouring a colored transparent resin liquid onto the surface of the base material in a state where the concave groove patterns are also embedded, and the resin liquid A method for producing a resin-coated decorative board, which comprises a step of curing, and a step of removing the colored transparent resin embedded and cured in the concave groove pattern along the groove while leaving the resin in the groove. 4. The method for producing a resin-coated decorative board according to claim 1, further comprising a step of attaching a decorative paper printed on the surface of the base material as the first step.