JP2001246720A - Decorative panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative panel having a sharp decorative layer and capable of removing any stain only by wiping the surface of the decorative layer. SOLUTION: In the decorative panel wherein the decorative layer and an overlay layer 3 are formed on a base material, the overlay layer contains 0-10 weight% of ash and an easy wiping substance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board of a thermosetting resin decorative board which can be cleaned only by wiping its surface.

[0002]

2. Description of the Related Art Conventionally, in order to improve the stain resistance of the surface of a decorative board, a treatment such as roughening the surface has been performed as disclosed in Japanese Patent Application Laid-Open No. Hei 4-323037.

[0003]

However, it has not been sufficiently effective against contamination that is permeable to resins such as oil-based Magic (registered trademark).

Therefore, Japanese Patent Application Laid-Open No. 53-94570 discloses that
A method of manufacturing a decorative board is disclosed in which a melamine resin mixed with a silicone resin is impregnated into a titanium base paper to form an overlay, and the overlay is overlaid on a pattern layer on a resin-impregnated core and hot-pressed. However, the wiping substance such as silicon oil has a problem that the ash, which is an inorganic component contained in the titanium base paper, is poorly compatible with the ash, and is dispersed and diffused, so that the pattern layer lacks sharpness.

Accordingly, the present invention has been made in view of the problems existing in such prior art, and aims at making the decorative layer clear and preventing any contamination. It is an object of the present invention to provide a decorative board that can be cleaned by simply wiping the surface.

[0006]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have arrived at a decorative plate as described below. That is, the decorative plate according to the present invention is based on a decorative plate on which a decorative layer and an overlay layer are formed on a substrate, and the overlay layer is
The gist of the present invention is that it contains not more than 0% or 10% by weight of ash and a wiping substance.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a decorative board according to an embodiment of the present invention will be described in detail focusing on a manufacturing method thereof.
This is a typical one, and the present invention is not limited by the present embodiment.

A concrete embodiment of the decorative board according to the present invention will be described. The decorative board of the present invention is a thermosetting resin decorative board obtained by laminating and integrating one or more thermosetting resin-impregnated papers on a substrate, wherein at least the surface thermosetting resin of the thermosetting resin decorative board is used. Contains a wiping substance. The wiping substance prevents a contaminant such as oil-based magic from penetrating into the resin and preventing a dye in the contaminant from binding to the resin. For this reason, even if contaminants adhere to the surface of the decorative board, it can be easily wiped off.

As such a wiping substance, a water-repellent substance can be used, and specifically, silicone or a fluororesin can be used. Silicone is a generic term for polymers having a main chain having repeating siloxane bonds and side chains such as alkyl groups and aryl groups. Those that have low polymerization and fluidity at room temperature are called silicone oils.

The silicone oil is alkyl-modified,
It is desirable that a modification treatment such as an amino modification, a carboxyl modification, a higher fatty acid modification, an epoxy modification, an alcohol modification, a polyether modification, or an alkyl polyether modification be performed. Among them, an amino-modified silicone oil having good reactivity with a melamine resin and having good compatibility with an emulsifier is preferable. By adding a nonionic, anionic or cationic activator and water to the amino-modified silicone oil and forcibly emulsifying, an aqueous silicone emulsion having good compatibility with the melamine resin can be obtained.

The wiping substance is contained in the thermosetting resin in an amount of 0.5%.
Desirably, the content is 10% to 10% by weight or less. 0.
If the content is less than 5% by weight, the wiping effect cannot be obtained. If the content is more than 10% by weight, the surface slips, which hinders the production process. In the present invention, when a fluororesin is used, the powder is added to the thermosetting resin.

As the material for forming the overlay layer in the present invention, melamine resin impregnated paper is preferable. The decorative layer is formed, for example, from a melamine resin-impregnated paper having a fine spot pattern. As the thermosetting resin used in the present invention, a melamine resin, a phenol resin, a diallyl phthalate resin and the like can be used. The thermosetting resin-impregnated paper is a resin-impregnated paper impregnated with the melamine resin, phenol resin, and diallyl phthalate resin and dried. As the impregnated paper, bleached kraft paper or unbleached kraft paper is selected according to the application. Colors and patterns can be printed on the impregnated paper as needed. Further, the pigment may be incorporated. One or a plurality of thermosetting resin-impregnated papers may be used. Further, a thermosetting resin-impregnated paper and a thermoplastic resin sheet may be used in combination. As the thermoplastic resin sheet, a polyester resin impregnated paper or a polyester resin film is preferable.

The decorative board according to the present invention comprises a melamine resin impregnated paper 1 and a phenol resin impregnated paper 2 as shown in FIG.
It consists of. The melamine resin-impregnated paper 1 functions as a decorative layer. The decorative layer is generally a resin in which a pattern paper on which colors, patterns, patterns, etc. are printed is impregnated with a resin. Further, the phenol resin-impregnated paper 2 functions as a base material (core layer) for ensuring the formability and strength of the decorative board. In the present invention, a wiping substance is mixed in at least the thermosetting resin-impregnated paper of the surface layer. This is because the purpose is to prevent contamination of the surface layer. Further, as the base material, a laminate of phenol resin impregnated paper, a plywood, a steel plate, and the like can be selected.

Next, a method for producing a decorative board according to the present invention will be described. In the present invention, an uncured thermosetting resin is mixed with a wiping substance, and the impregnated resin is dried. In mixing, it is desirable to emulsify.

Patterned paper or overlay paper impregnated with melamine resin and dried, and core paper impregnated with phenol resin and dried are laminated and heated and pressed. Pressure is 10
２００200 kg / cm ^{2 at} a temperature of 40 to 160 ° C. The pressing may be performed by sandwiching the laminate of the resin-impregnated paper with a stainless steel plate or by pressing with a stainless roller. In the present invention, the resin decorative board cured by the hot press may be bonded to a base material such as a plywood or a steel table top with vinyl acetate or a rubber-based adhesive.

An embodiment according to the present invention will be described below in detail with reference to FIG. Example 1 First, a wiping substance is adjusted (30% liquid) so as to constitute the decorative plate 10 as shown in FIG. Amino-modified silicone oil TSF4702 (manufactured by Toshiba Silicone Co., Ltd.) 3
0 parts by weight, polyoxyethylene oleate Newcol 1
70 parts (manufactured by Nippon Emulsifier Co., Ltd.), 1 part by weight of 28% ammonia, and 64 parts by weight of water were mixed. This mixture is
New Col1 on F4702 (Toshiba Silicone Co., Ltd.)
70 (manufactured by Nippon Emulsifier Co., Ltd.) is poured into an aqueous ammonia solution while stirring at a high speed, and is completely emulsified through a homogenizer. Then, 5% of the above-mentioned wiping substance is added to the melamine resin from the surface, and the ash content is 0% (paper made by Daifuku Paper).
MOL-D-20), one overlay layer 3 formed by impregnation, a pattern layer 4 formed by impregnating a pattern paper having a basis weight of 120 g / m ^{2 with} a melamine resin, and a basis weight 2
Core layers 5 formed by laminating three core-impregnated papers made by impregnating a phenolic resin on kraft paper of 00 g / m ² are respectively laminated. Then, the above-mentioned components are inserted into a press forming machine, and the surface pressure is 80 kg / cm ² to 40 ° C. to 140 ° C.
After heating for 50 minutes, the decorative plate 10 was cooled to 40 ° C. and integrally laminated to obtain a decorative plate 10.

Example 2 As shown in FIG. 2, 5% of the wiping substance prepared in the same manner as in Example 1 was added to a melamine resin from the surface to form a decorative board 10, and the ash content was 7% by weight. Paper (made by Kojin)
KW-01U, an overlay layer 3 formed by impregnation to a basis weight of 100 g / m ² ), and a pattern layer 4 formed by impregnating a melamine resin in a pattern paper having a basis weight of 120 g / m ^2.
And a core layer 5 formed by laminating three core-impregnated papers made by impregnating kraft paper having a basis weight of 200 g / m ^{2 with} a phenol resin. Then, the above-mentioned components were inserted into a press molding machine, heated from 40 ° C. to 140 ° C. for 50 minutes at a surface pressure of 80 kg / cm ² , and then cooled to 40 ° C. to obtain an integrally laminated decorative plate 10. .

Example 3 As shown in FIG. 2, 5% of the wiping substance prepared in the same manner as in Example 1 was added to a melamine resin from the surface to form a decorative plate 10, and 1% by weight of ash was added. Layer 3 formed by impregnating paper (MOL-D-100 manufactured by Daifuku Paper Co., Ltd., basis weight 20 g / m ² ), and a pattern formed by impregnating melamine resin into pattern paper having a basis weight of 120 g / m ² The layer 4 and a core layer 5 formed by stacking three core-impregnated papers each made of kraft paper having a basis weight of 200 g / m ² and impregnated with a phenol resin are laminated. Then, the above-mentioned components are inserted into a press molding machine, and the surface pressure is set to 40 kg / cm ² at 40 kg / cm ² .
After heating from ℃ to 140 ℃ in 50 minutes, it was cooled to 40 ℃ to obtain a decorative board 10 integrally laminated.

The following tests and evaluations were carried out on the thus obtained examples of the decorative board according to the present invention and comparative examples for comparison with the examples. The results are shown in the following table. was gotten.

As is clear from the comparison between the examples and comparative examples, when the ash content exceeds 10% by weight, the wiping substance is dispersed and the design becomes dirty, and the sharpness of the design decreases.
In addition, the dispersed wiping substance serves as a starting point, and fine cracks and the like are generated in the melamine resin due to heat or moisture absorption, which causes gloss fading. Further, it can be seen that if the ash content is too large, the hardness of the dispersed wiping substance decreases.

[0021]

[Table 1]

Comparative Example 1 In Example 1, paper containing 20% by weight of ash (KW manufactured by Kojin)
Comparative Example 1 was used as a decorative board formed by laminating an overlay layer formed by impregnation to -100 basis weight (100 g / m ² ).

With respect to the wiping properties in the above table, the case where the decorative board surface was easily rubbed with an oil-based magic and rubbed with tissue paper was regarded as good, and the case where it did not fall was regarded as poor.

Regarding the hot water resistance, a hot water pot heated to 100 ° C. was left on a decorative plate for 20 minutes to examine whether there was any abnormality.

With respect to heat resistance, an oil pan heated to 180 ° C. was left on a decorative plate for 20 minutes to examine whether there was any abnormality.

With respect to the pencil hardness, a straight line is drawn on the surface of the decorative board with a certain degree of force using a pencil having a predetermined hardness, and the line written with the pencil is erased with an eraser. It was checked whether or not a mark was left.

Regarding the design clarity, a pattern with a clear pattern on the base paper was regarded as good, and a pattern with a blurred pattern was evaluated as bad.

As is clear from the above table, the decorative plates according to Examples 1 to 3 of the present invention have good and excellent wiping properties, hot water resistance, heat resistance and pencil hardness. In addition, the hot water resistance and heat resistance of Comparative Example 1 are glazed, and the pencil hardness is also inferior.

[0029]

As described above, according to the present invention, it is possible to obtain a decorative plate in which the decorative layer is clear and stains can be reduced by simply wiping the surface against any contamination.

[Brief description of the drawings]

FIG. 1 is a structural view of a decorative board according to the present invention.

FIG. 2 is a sectional view showing an embodiment of a decorative board according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 melamine resin impregnated paper 2 phenol resin impregnated paper 3 overlay layer 4 pattern layer 5 core layer 10 decorative board

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 2B002 AA03 BA14 BB14 BB15 4F100 AA00B AK33C AK36A AK36B AK52B AT00A BA02 BA03 BA07 BA13 CA30B DG10A DG10B DG10C DH00A DH00B DH00C EJ82A EJ82B EJ82A EJ82B

Claims (1)

[Claims] 1. A decorative plate having a decorative layer and an overlay layer formed on a base material, wherein the overlay layer contains ash of 0% or 10% by weight or less and also contains a wiping substance. Decorative vase.