JPH072413B2 - Metallic melamine resin decorative board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a metallic melamine resin decorative plate having both metallic decorative beauty and embossing beauty that are excellent in metallic texture such as gold, silver, copper, and aluminum. Regarding

[Prior art]

In recent years, melamine resin decorative boards have been used for kitchen furniture, desk surfaces, tabletops, dining tables, etc. In particular, so-called matte or semi-matt boards with a matte surface that has been embossed It has been used extensively.

Further, in order to harmonize the kitchen furniture or the surface of the desk with the metal part, a melamine resin decorative board having a metal-like decorative surface has been widely used.

By the way, it is empirically known that it is difficult to realize a melamine resin decorative plate having a metallic-tone decorative surface by simply mixing metallic fine powder or the like into printing ink. The reason for this is believed to be that the fine metal powder in the ink flows when the melamine resin is heated and pressed, and is unevenly distributed as a so-called sinking state.

In view of such a problem, conventionally, a metallic tone melamine resin decorative board is manufactured by a method of incorporating fine metal powder during papermaking of decorative paper.

[Problems to be solved]

However, according to the above-mentioned conventional manufacturing method, the amount of the fine metal powder incorporated into the decorative paper is inevitably large. Moreover, since the slurry solution cannot be filtered during papermaking, impurities such as dust are easily mixed. In particular, the cost will increase if the paper making yield is taken into consideration.

The present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a metal-like melamine resin decorative board that has both metallic decorative beauty and embossing beauty that are excellent in metal texture and is inexpensive. To do.

[Means for solving problems]

The present invention comprises a pattern layer made of a metallic decorative paper formed on a base layer made of a base material, a melamine resin layer impregnated in the metallic decorative paper, and an overlay layer formed on the melamine resin layer. A metal-like melamine resin decorative board having the above-mentioned structure, wherein an uneven surface is formed on the surface of the overlay layer by embossing, and the pattern layer made of the metal-like decorative paper contains fine particles of a luminance substance obtained by gravure printing. A metal-like melamine resin decorative board characterized by having irregularities in plate making.

In the present invention, the embossed surface is a fine uneven surface, and the uneven surface has a rounded texture.
Have.

In addition, the gravure printing is performed by filling printing ink into a number of vertical and horizontal recesses (see FIGS. 1 and 2) formed during plate making, and transferring the ink onto the surface of the decorative paper by rotating the plate. Be seen.

Further, since the pattern layer made of metal-like decorative paper is produced by printing by the gravure printing, innumerable plate-making irregularities are formed vertically and horizontally. This may cause irregular reflection of light, resulting in uneven color tone.

In addition, the metal-like decorative paper can have an ink stable film such as cellulose acetate or carboxymethyl cellulose (CMC) formed on its surface. As a result, it is possible to prevent the luminous substance powder from falling off during impregnation, unevenness of streaks, and sinking of ink during heating and pressing.

The melamine resin is an initial condensation synthetic resin in which melamine and formaldehyde are bonded by a chemical reaction. As a result, the top plate and the like can be provided with physical properties excellent in surface hardness, heat resistance, wear resistance, and the like.

An overlay layer is formed on the melamine resin layer. An uneven surface is formed on the surface of the overlay layer by embossing.

For the overlay layer, for example, overlay paper is superposed on the melamine resin layer, and a shaping plate having a fine uneven surface is placed on the overlay paper, and these are heated and pressed. Thus, it is formed to have an uneven surface.

Further, the heating and pressing at the time of forming the uneven surface is performed by heating the melamine resin at a high pressure, for example, at 130 to 170 ° C. under a pressure of 30 to 80 kg / cm ² . As a result, the melamine resin is thermoset.

In addition, the embossed surface is a metal pattern plate having a fine uneven surface formed by an etching surface treatment or a blasting surface treatment, or a plastic pattern plate formed by embossing a thermosetting resin laminated plate with a melamine resin. It can be formed by pressing at the time of manufacturing the decorative paper.

As the base layer made of the above-mentioned base material, for example, a laminated thermosetting layer such as phenol resin-impregnated paper or diallyl phthalate resin-impregnated paper or plywood, or a wood-based substrate such as particle board can be used.

In the present invention, the luminescent material fine powder that imparts a metallic texture is
It is preferable that one kind or two or more kinds of pearl powder, mica powder, vermiculite powder, gold powder, silver powder, copper powder, aluminum powder and the like be used.

The gold, silver, copper, and aluminum powders have various shapes such as a grain shape and a flat shape, and metal working powders, foil cutting powders and the like can be used.

Further, in the present invention, it is preferable that the depth of the concave grooves of the patterning plate having fine irregularities on the surface is 1 μm to 60 μm, and the pitch between the convex parts is 10 μm to 300.

As a result, the embossed surface has a groove depth of 1
μm to 60 μm, and the pitch between the protrusions is 10 μm to 30
The state becomes 0 μm (see FIG. 1).

Further, by this, the plate-making irregularities of the pattern layer made of the metallic decorative paper can be aligned with the embossed surface of the overlay layer to raise the pattern layer. Therefore, the fine particles of the luminance substance contained in the plate-making irregularities can be clearly seen on the surface of the metallic melamine resin decorative plate due to the floating effect. Further, when the metal-like melamine resin decorative plate is irradiated with light, the light is reflected in the same direction on the embossed surface and the plate-making irregularities, so that the irregularities of the plate-making irregularities can be reduced.

Examples of the overlay layer include, for example, JP-A-48-4378.
No. 5, JP-A-63-191634, a known one is used.

That is, well-known components are used as the components and forming means of the overlay layer. That is, the overlay layer is, for example,
Coloring of wood pulp fiber paper, Manila hemp fiber pulp fiber paper, linter cotton fiber paper, or transparent paper with phenol resin, melamine resin, di-allyl with a weight of 10 to 80 g / m ² and high α-cellulose component A thermosetting resin such as phthalate resin or polyester resin is impregnated and applied, and this is dried to obtain overlay impregnated paper with a thickness of 20 to 500 μm.

Then, this impregnated paper is laminated on the pattern layer impregnated with the melamine resin, and heated and pressed, for example, as in the case of the melamine resin layer, under the pressure of 30 to 80 kg / cm ² to 130 to 170.
Thermocompression bonding at ℃. Thereby, the overlay layer can be provided.

In the present invention, the pressurizing and heating press can form irregularities on the surface of the overlay layer by using a patterning plate having fine irregularities on the surface as shown in FIG.

Fine powder and various additives may be added to the resin with which the overlay paper is impregnated.

Further, in the present invention, a metal-like melamine resin decorative board without the above-mentioned overlay layer on the outermost surface can be used.

The metal-like melamine resin decorative board is, for example, a metal-like melamine comprising a pattern layer made of metal-like decorative paper formed on a base layer made of a base material and a melamine resin layer impregnated in the metal-like decorative paper. A resin decorative paper, wherein an uneven surface is formed by embossing on the surface of the melamine resin layer, and the metal-like decorative paper has plate-making unevenness containing luminescent material fine powder obtained by gravure printing. There is a metallic melamine resin decorative board characterized by.

As a result, the overlay layer on the outermost surface can be omitted to reduce the cost, and an inexpensive metal-like melamine resin decorative board can be obtained.

[Action and effect]

The metallic tone melamine resin decorative board according to the present invention is formed by using a metallic tone decorative paper obtained by gravure printing, in which the plate-making irregularities containing the fine powder of the luminance substance are formed. Therefore, the plate-making irregularities impart metallic decorative beauty by the fine powder of the luminescent material that imparts a metallic texture.

The metallic melamine resin decorative board has an embossed surface on its surface.

For this reason, both the embossed surface and the plate-shaped irregularities of the metal-finished decorative paper are aligned with each other, and a floating effect due to the same reflection of light, that is, a light reflection synergistic effect occurs, and the embossing beauty can be exhibited ( (See FIG. 1).

Further, due to the synergistic effect of the light reflection, even when the irregularities of the plate-making irregularities on the surface of the metallic decorative paper are reduced, the above sublime aesthetics can be sufficiently exhibited.

Therefore, it is possible to provide a metal-like melamine resin decorative board having excellent metallic decorative texture such as gold, silver, copper, aluminum and the like, which has both metallic decorative beauty and embossing beauty.

Further, when the overlay layer on the outermost surface is omitted, the cost can be reduced (see the second embodiment).

As described above, according to the present invention, it is possible to provide an inexpensive metal-tone melamine resin decorative board that has both metallic decorative beauty and embossing beauty that are excellent in metal texture.

〔Example〕

First Example Regarding a metallic tone melamine resin decorative board according to this example,
This will be described with reference to FIGS.

That is, as shown in FIG. 1, the metal-like melamine resin decorative board of this example has an overlay layer 5 having an embossed surface 4, a pattern layer 6 made of a metal-like decorative paper printed by gravure printing, It is constituted by a melamine resin layer 60 impregnated with a metallic decorative paper and a base layer 7 made of a base material.

The embossed surface 4 is formed by a metal shaping plate 8 having a fine uneven surface 8 on the surface when the melamine resin is heated and pressed, as shown in FIG. The concave-convex surface 81 is formed such that the depth D of the concave groove 811 is 25 μm and the pitch between the heads A1 and B1 of the convex portion 811 is 100 μm.

Therefore, the overlay layer 5 has the embossed surface 4 having substantially the same shape as the metal shaping plate 8. That is, the depth D2 of the concave groove 41 is substantially the same as the depth D1 of the concave groove 811 of the metal shaping plate 8. Further, the pitch P2 between the heads A2 and B2 of the convex portion 42 and the pitch P1 of the convex portion 812 of the metal shaping plate 8 are substantially the same.

Next, the pattern layer 6 is made of a metallic decorative paper printed on the surface by gravure printing. Further, the metal-finished decorative paper is impregnated with a melamine resin. Therefore, the pattern layer 6 has the melamine resin layer 60 on its surface or the like. Further, as shown in FIG. 3, the pattern layer 6 has printing unevennesses 61 and 62 of substantially the same shape as the gravure plate unevenness 3. Further, the printing irregularities 61 and 62 are formed by the gravure printing ink 2 containing the aluminum powder 63. Then, the printing irregularities are composed of convex portions 61 and concave portions 62. The pitch Q of the convex portions 61 is substantially the same as the pitch R between the convex portions 11 and 11 formed on the surface of the gravure plate 1 as shown in FIGS. The groove depth C of the recess 62 is substantially the same as the groove depth H of the recess 12 of the gravure plate 1.

The base layer 7 is composed of a laminate of kraft paper impregnated with phenol resin. As a result, an elastic base material is formed.

Well-known components and forming means of the overlay layer 5 are used. That is, the overlay layer 5 is, for example,
Weighing 10 to 80 g / m ² Wood pulp fiber paper with many α-cellulose components, Manila hemp fiber pulp paper, linter cotton fiber paper coloring, or transparent paper with phenolic resin,
A thermosetting resin such as melamine resin, di-allyl phthalate resin, polyester resin is impregnated and applied, and this is dried to obtain overlay impregnated paper with a thickness of 20 to 500 μm.

Next, this impregnated paper is laminated on the pattern layer 6 impregnated with the melamine resin 60 and heated under pressure, for example, under the pressure of 30 to 80 kg / cm ² as in the case of the melamine resin layer. ~
Thermocompression bonding at 170 ℃. Thereby, the overlay layer 5 can be provided.

Fine powder and various additives may be added to the resin with which the overlay paper is impregnated.

The metal-tone melamine resin decorative board of this example has the following functions and effects because it is configured as described above.

That is, the embossed surface 4 formed on the surface of the transparent overlay layer 5 and the printing unevennesses 61 and 62 existing on the surface of the pattern layer 6 have substantially the same shape, and the positions of both unevennesses are mutually different. I am in tune. That is, in the two-dot chain line of E1 and E2, the positions of the convex portion 42 of the metallic decorative beauty excellent in metallic texture and the embossed beauty 4 and the printing concave portion 62 substantially correspond to each other. Therefore, when the light ray L ₁ enters, the convex portion 42
The light ray L ₂ reflected at, the light ray L ₃ entering the overlay layer 5 and its reflected light L ₄ are reflected in substantially the same direction. As a result, the aluminum powder existing in the printing convex portion 61 appears to float on the surface.

Therefore, according to this example, it is possible to provide a metal-like melamine resin decorative board having a metallic decorative beauty and an embossing beauty that are excellent in an aluminum metal-like metal texture.

Second Example A metallic melamine resin decorative board according to this example will be described with reference to FIGS. 5 and 6.

In the metallic melamine resin decorative board of this example, the overlay layer 5 of the first embodiment is omitted, and the aluminum powder 63 is replaced with copper powder. The other structure is the same as that of the second embodiment.

Thus, in the metallic tone melamine resin decorative board of this example, as shown in FIGS. 5 and 6, the melamine resin layer 60 formed on the surface of the pattern layer 6 is formed, and the concave portion is formed on the surface.
The embossed surface 4 composed of 41 and the convex portion 42 is formed. That is, the copper metallic melamine resin decorative board without the overlay layer 5 is obtained. In the figure, reference numeral 7 is a base layer.

Since the metallic tone melamine resin decorative board of this example is formed as described above, it has the following effects.

That is, according to this example, it is possible to provide an inexpensive metal-like melamine resin decorative plate that has both copper metallic decorative beauty and embossing beauty.

[Brief description of drawings]

1 to 4 show a first embodiment, FIG. 1 is a sectional view of the same decorative plate, FIG. 2 is a sectional view of a shaping plate, and FIG. 3 is an enlarged sectional view of a surface of a gravure plate, FIG. 4 is an enlarged plan view of the surface of the same gravure plate, FIGS. 5 and 6 show a metal-like melamine resin decorative plate according to the second embodiment, and FIG. 5 is a sectional view thereof.
FIG. 6 is a plan view thereof. 1 ... gravure plate making, 2 ... ink, 3 ... plate making irregularities, 4 ... embossed surface, 5 ... overlay layer, 6 ... pattern layer, 60 ... melamine resin layer, 7 ... base layer,

Claims (4)

[Claims] 1. A pattern layer made of metallic decorative paper formed on a base layer made of a base material, a melamine resin layer impregnated in the metallic decorative paper, and an overlay layer formed on the melamine resin layer. A metallic tone melamine resin decorative board comprising: a metallic material melamine resin decorative plate having an uneven surface formed by embossing on the surface of the overlay layer, and a pattern layer comprising the metallic decorative paper obtained by gravure printing. A metal-like melamine resin decorative board characterized by having irregularities in plate making containing. 2. The metallic melamine resin decorative board according to claim 1, wherein the fine powder of the luminous substance is selected from pearl powder, mica powder, vermiculite powder, gold powder, silver powder, copper powder, and aluminum powder. At least one kind of metal-like melamine resin decorative board. 3. The metal-like melamine resin decorative plate according to claim 1, wherein the uneven surface of the surface of the overlay layer comprises:
A metallic melamine resin decorative board characterized in that the height of the convex portions is 1 μm to 60 μm and the pitch between the convex portions is 10 μm to 300 μm. 4. A metallic melamine resin decorative board comprising a pattern layer made of metallic decorative paper formed on a base layer made of a base material and a melamine resin layer impregnated in the metallic decorative paper. An uneven surface formed by embossing is formed on the surface of the melamine resin layer, and the metallic decorative paper has plate-making irregularities containing fine particles of a luminance substance obtained by gravure printing. Resin decorative board.