JPH09248893A - Production of harmonized embossed decorative panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a harmonized embossed decorative panel rich in three- dimensional feeling. SOLUTION: In the production of a harmonized embossed decorative panel 9, when the surface of a thermosetting resin embossed decorative panel 1 is coated with color paint 7 prepared by adding a coloring agent to clear paint, the color paint is applied so that the thickness of the color paint layer of the embossed recessed parts 2 of an emboss applied surface is larger than the thickness of the color paint layer of the flat part 3 of the emboss applied surface and the contours of the embossed recessed parts 2 are left.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a thermosetting resin embossed decorative board using a thermosetting resin such as melamine resin, diallyl phthalate resin and unsaturated polyester resin. The present invention relates to a method of manufacturing a tuned embossed decorative plate.

[0002]

2. Description of the Related Art Conventionally, a thermosetting resin embossed decorative plate has been known for three-dimensionally expressing the surface of a thermosetting resin decorative plate, and in particular, a tuned embossed decorative plate in which an embossed pattern and a picture pattern are synchronized. With a realistic feel and a finish that is close to natural, there is a great demand nowadays for the pursuit of higher quality.

As a method for producing a tuned embossed decorative board, a method of physically imparting embossing by using an embossing plate or an embossed film during or after molding of a thermosetting resin decorative board is mainly used. It is roughly divided into a chemical embossing method in which a polymerization inhibitor is added to the composition, and embossing is applied depending on the difference in curing speed, and a method in which painting is performed with a wiping method after embossing is applied. In recent years, the wiping method is particularly preferred. .

[0004]

However, in the wiping method, after applying embossing, the colorant is applied to the entire surface and wiped off to leave the colorant only in the embossed recesses, and then using an acrylic urethane or urethane resin. Due to the coating, the colorant tends to remain in a non-uniform state even on flat parts other than the embossed part, and the colorant in the embossed recesses can also be wiped off to improve the embossing depth, size and shape. Due to restrictions, not only was it difficult to meet the needs of consumers, but also man-hours were required and production was extremely difficult.

[0005]

Means for Solving the Problems The present invention has been studied in view of such circumstances, and when the surface of a thermosetting resin embossed decorative board is coated with a colored paint containing a clear paint and a coloring agent added, embossing is imparted. A method for producing a tuned embossed decorative plate, characterized in that the coating is applied so that the thickness of the colored paint layer in the embossed concave portion of the surface is thicker than the thickness of the colored paint layer in the flat portion of the embossed surface and leaves the contour of the embossed concave portion. is there.

The thermosetting resin embossed decorative board used in the present invention is widely known. For example, thermosetting resin-impregnated decorative paper, resin-impregnated core paper, and optionally thermosetting resin-impregnated surface paper. Embossed with a laminate of
Sheet, embossed film, embossed sheet, or other embossing material that is inserted between the hot plates of a hot press machine such as a flat plate press or continuous press machine to give embossing at the same time as molding, or a flat finished heat A curable resin decorative board that is physically embossed using an embossing roll device, or one that is embossed based on a film forming method typified by polyester decorative plywood can be used.

Regarding the thermosetting resin, a melamine resin, an acetoguanamine resin, a benzoguanamine resin, a diallyl phthalate resin and a phenol used for producing a decorative board are used.
Resin, unsaturated polyester resin, etc. are exemplified, and water,
After being diluted with an organic solvent or the like to make a resin liquid, it is impregnated into a base paper for decorative board such as surface paper, decorative paper, core paper.

As the embossing plate, an embossing plate made of metal, an embossing plate made of plastic, or a composite of metal foil and plastic can be applied.
For embossed film, polypropylene film, polyester film, polyethylene terephthalate
It is possible to apply a resin film with wood grain, stone pattern, etc. formed by a raised ink on a thermoplastic resin film, but if it is embossed and has heat resistance and durability, it is a sheet shape like a thermoplastic resin sheet. However, the embossing material is not particularly limited.

When embossing is applied at the same time as thermocompression molding, the flat plate press and the continuous press both have a temperature of 120 to 1
The conditions are 60 ° C. and pressure 10 to 50 kg / cm ² , and when embossing is applied to a flat thermosetting resin decorative plate using an embossing roll device, the temperature is 80 to 120 ° C. and the pressure is 3 It may be 10 kg / cm ² .

As for the colored paint, clear paint made of synthetic resin such as urethane resin, acrylic urethane resin, aminoalkyd resin, etc. is cleared, and coloring agents such as water-based dye, solvent dye and solvent pigment used for woodworking coating are cleared. It may be added in an amount of 0.1 to 2.0 parts by weight based on 100 parts by weight of the main component of the paint, and if the addition amount exceeds the upper limit, the degree of coloring becomes strong and the pattern of the thermosetting resin embossed decorative board easily disappears. If less than, the degree of coloring is weak and the three-dimensional effect becomes poor. Here, the water-based dye is a solution containing an aqueous dye and water as main components, the solvent-based dye is a solution containing an organic solvent-soluble dye and an organic solvent as main components, and the solvent-based pigment is an organic solvent. It is a solution containing a soluble pigment and an organic solvent as main components.

Next, the above-mentioned colored paint is sprayed into the embossed recess of the thermosetting resin embossed decorative plate so as to be thicker than the thickness of the flat part of the embossing surface and to leave the contour of the embossed recess. Then, the coated film is cured by a means such as room temperature curing, heat curing, and ultraviolet curing after the application to obtain a synchronous embossed decorative plate. In particular, when the manufacturing method of the present invention is applied to a thermosetting resin embossed decorative plate having a depth of the embossed concave portion of 10 μ or more, the effect is remarkably exhibited with a three-dimensional effect. If the depth of the embossed recesses is 10 μm or less, all the embossed recesses are likely to be filled with the colored paint, which is not preferable.

[0012]

[Function] The difference in the degree of coloring due to the difference in the absolute amount of the colored paint attached to the embossed concave portion and the flat portion of the embossed surface, that is, the embossed concave portion adheres more than the flat portion, and the coloring degree becomes larger than the flat portion. This makes the emboss appear more three-dimensionally and looks good, and the manufacturing man-hours only need to be applied once.

Embodiments of the present invention will be described in detail below with reference to the sectional views shown in the drawings.

【Example】

Example Wood grain bunch pattern printing paper (80 g / m ² ) with thinned conduit pattern
Then, a resin solution containing diallyl phthalate resin as a main component was impregnated so that the impregnated amount was 80 g / m ² , to obtain a resin-impregnated decorative paper. In addition, 200 g / m ² of kraft paper is impregnated with a resin liquid containing unsaturated polyester resin as the main component at 100 g / m ²
To obtain a resin-impregnated core paper. Next, using an embossed film having a convex portion of 80 μm wood grain formed on the polyethylene terephthalate film with a thickness of 50 μm by a raised ink as an embossing material, the resin-impregnated decorative paper and the resin-impregnated core were used between the hot plates of the continuous press machine. It was inserted and molded under the conditions of 150 ° C. and 10 kg / cm ² to obtain a thermosetting resin embossed decorative plate (1) having a thickness of 0.45 mm. Next, this thermosetting resin embossed decorative board (1) is attached to an MDF (medium density fiber board) having a thickness of 18 mm using a rubber adhesive, the surface is degreased with a thinner, and then an acrylic urethane clear paint is applied. (Product name Aklet A
F-10 Genzo Kagaku Kogyo Co., Ltd.) with a brown solvent-based pigment (trade name: Acclet Color-AE-2700 Gen Gen Kagaku Kogyo Co., Ltd.) added in 1 part to a thermosetting resin embossed board (7). When applying to the surface of 1),
Application under conditions of a coating amount of 30 g / m ² so that the thickness of the colored paint layer of the embossed recess (2) is thicker than the thickness of the colored paint layer of the flat part (3) and the contour of the embossed recess (2) is left. Then, a tuning embossed decorative plate (9) was obtained. The obtained entrained embossed decorative plate (9) had a deeper embossed portion than the flat portion and had a finished three-dimensional effect.

Comparative Example In the case where the thermosetting resin embossed decorative board of the example is wiped with a brown colorant and further coated with a urethane resin, not only the colorant remains in the flat part but also the colorant in the embossed part It was wiped off and finished with a non-uniform surface, and there was no stereoscopic effect as compared with the examples.

[0015]

According to the manufacturing method of the present invention, unlike the wiping method, several steps of coating, wiping and coating are not required, and the purpose can be achieved by only one step of coating, which is convenient for manufacturing. There are few restrictions on the embossing shape, and it can fully meet the demands of consumers.

Furthermore, the tuned embossed decorative board based on the manufacturing method of the present invention causes the embossing to appear more three-dimensionally due to the difference in the degree of coloring due to the difference in the absolute amount of the colored paint adhering to the embossed concave portion and the flat portion, and the colorant The embossed concave part and the flat part remain in a uniform state for a beautiful finish.

[Brief description of drawings]

FIG. 1 shows a cross-sectional view of a tuned embossing decorative board based on the manufacturing method of the present invention.

[Explanation of symbols]

 1 Thermosetting Resin Embossed Decorative Plate 2 Embossed Recess 3 Flat Part 7 Colored Paint 9 Tuning Embossed Decorative Plate

Claims (1)

[Claims] 1. When the surface of a thermosetting resin embossed decorative board is coated with a colored paint in which a coloring agent is added to a clear paint, the thickness of the colored paint layer in the embossed recess of the embossed surface is equal to that of the flat part of the embossed surface. A method for producing a tuned embossed decorative plate, which is characterized in that it is applied so as to be thicker than the colored paint layer and leave the contour of the embossed recess.