JP2013000943A - Decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet which has an excellent feeling of gradations of a pattern.SOLUTION: A decorative sheet 10 includes a substrate layer 2 which forms a decorative surface, a colored coating layer 3 provided to the decorative surface 2a, a pattern layer 4 formed by printing a pattern directly on the colored coating layer 3, and a clear layer 5 which covers the colored coating layer 3 and pattern layer 4. At least the colored coating layer 3 between the substrate layer 2 and colored coating layer 3 is made of a material where the solvent of ink used to print the pattern layer 4 penetrates, and the pattern layer 4 has ooze at its edge part 4e and the color tone of a pattern 4m changes into gradations at the edge part 4e.

Description

  The present invention relates to a decorative board in which a pattern such as a wood grain pattern is formed on a decorative surface of a substrate layer made of wood or the like.

Various techniques are known as a decorative board and a manufacturing method thereof. For example, Patent Document 1 describes a decorative board in which a base color paint layer, a transparent paint layer, and a wood grain pattern print layer are provided on the surface of a substrate such as wood, and a method for manufacturing the same. In addition, it is described that a transparent sanding sealer is used as the transparent paint layer (see claims 2 and 3).
In the decorative board of this patent document 1, since the transparent paint layer is provided on the upper surface of the ground colored paint layer, the peeling of the ground colored paint layer is suppressed, and the three-dimensional effect is given by raising the bark pattern by the conduit hole or the like. And the wood grain pattern printing layer is provided on the upper surface of the transparent paint layer, so that the wood grain pattern can be present below and the wood grain pattern can be present on the bottom through the transparent paint layer. Is extremely three-dimensional and has a practical advantage that a natural grain pattern can be obtained (see the effect column of Patent Document 1).

JP-A-3-218801

However, in recent years, a decorative decorative board having a design close to that of a natural wood pattern (similar to a wooden pattern) has been demanded.
By the way, in the case of natural wood, the color tone of each part, for example, at the boundary between the summer eyes (light-colored part) and the winter eyes (dark-colored part) of the grain, can usually change stepwise. Instead, it has a gradually changing gradation.

However, when such a wood grain pattern is obtained by printing, the color tone tends to change in a stepped manner at a portion corresponding to the edge of the wood grain pattern in the original plate. In addition, when expressing the gradation of the edge part of the wood grain pattern by inkjet printing, the gradation is expressed by the change in the density of the ink dots or the change in the size of the ink dots. The periphery of the dots must remain clear.
In the decorative board of Patent Document 1 and the like, since a transparent paint layer by a transparent sanding sealer is formed below the wood pattern printing layer, the ink used for the wood grain pattern does not soak into the bottom layer, and the ink on which the original plate is transferred This is presumably because the ink dots sprayed by the ink jet or ink jet are formed as a wood grain printing paint layer on the transparent paint layer (sanding sealer) with almost no expansion.
As the decorative board, there is a decorative board made of wood (solid wood or veneer) and paper or a resin sheet attached to the surface of a base material layer such as plywood.
Further, not only in the case of a grain pattern, but also in the case of forming a geometric pattern or an abstract pattern (abstract pattern), there are cases in which the color tone of the edge portion of the pattern is desired to be a gradation.

  This invention is made | formed in view of this problem, Comprising: It is providing the decorative board with a favorable gradation feeling of patterns, such as a grain pattern.

  The solution includes a substrate layer forming a decorative surface, a colored paint layer provided on the decorative surface, a pattern layer obtained by printing a pattern directly on the colored paint layer, and the colored paint layer and the pattern layer. A transparent clear layer for covering, and at least the colored paint layer of the substrate layer and the colored paint layer is made of a material into which a solvent of an ink used for printing the pattern layer penetrates. Is a decorative board in which the edge portion is blurred and the color tone of the pattern is changed in a gradation at the edge portion.

  In the decorative board of the present invention, the pattern layer is printed directly on the colored paint layer having solvent permeability. For this reason, the color components (pigments, dyes) forming the pattern layer penetrate and spread into the colored paint layer or the colored paint layer and the substrate layer together with the solvent (water, organic solvent) contained in the paint (ink) (in particular, Easily spread along the grain of the substrate layer.) And for printed patterns (planar shape of ink just after transferring the original plate, or planar shape of ink dots just after spraying by ink jet etc.), the pattern layer formed on the decorative board in this case is the edge part of the pattern In FIG. 3, the ink naturally spreads and blurs, and the color tone naturally changes from a pattern layer toward a portion where the surrounding pattern layer is not formed. A decorative panel with good pattern gradation can be obtained.

In addition, a decorative board has a board | substrate layer which makes a decorative surface. As a substrate layer of this decorative board, a veneer, paper, a resin sheet, etc. which are formed on the surface of a plywood forming a base material layer and form a decorative surface (surface) are applicable, and a solid material itself is also applicable. In this case, the base material layer and the substrate layer are also used.
In addition, as the colored paint layer, the paint paint layer (open pore painting, semi-open pore painting) that leaves the recesses composed of the conduit holes and the like existing in the substrate layer is also used as the colored paint layer (closed pore painting). It is good also as a colored paint layer by.
In addition, the colored paint layer is preferably formed using a paint that does not have a sealer effect to prevent the penetration (suction) of the solvent of the paint (ink) used for printing the pattern layer. And those formed with water-based paints such as water-based emulsion paints and water-based dispersion paints.

Moreover, as a pattern of a pattern layer, besides a grain pattern, a geometric pattern or an abstract pattern (abstract pattern) can be used.
Furthermore, examples of the pattern layer include those formed by applying an aqueous paint such as an aqueous emulsion paint or an aqueous dispersion paint containing a pigment or a dye as a colorant.

In addition, as a coloring agent used for the coating material of a colored coating layer and a pattern layer, a pigment and dye can be selected suitably and can be used. Examples of pigments include titanium oxide, zinc sulfide, zinc white, lead white, lithopone, carbon black, oil smoke, bitumen, phthalocyanine blue, ultramarine, carmine FB, yellow lead, zinc yellow, Hansa yellow, ocher, and bengara. It is done. Examples of the dye include insoluble metal azo dyes, leveling dyes, anti-condensation dyes, acid mordant dyes, metal complex hydrochloric acid dyes, m-ferylene diamine derivatives, direct dyes, reactive dyes, naphthol dyes, etc. Is mentioned.
In addition to the colorant, the paint used for the colored paint layer and the pattern layer includes an antifoaming agent, a dispersing agent, a color separation inhibitor, etc. in order to improve coating workability or maintain stability and quality during storage. Various additives such as suspending agents can be blended.
As the paint used for the colored paint layer and the pattern layer, either a water-based paint or an oil-based paint can be used. Examples of water-based paints include resin-based water-based paints and dispersant-based water-based paints.
As a solvent used for these water-based paints, water and a hydrophilic solvent can be used. As the hydrophilic solvent, for example, one or a combination of two or more selected from alcohols, ethylene glycol and derivatives thereof, glycerin and derivatives thereof, propylene glycol and derivatives thereof, and the like can be used. Furthermore, as a resin used for the resin-based water-based paint, for example, resins such as vinyl resin, acrylic resin, urethane resin, fluororesin silicone resin, acrylic silicone resin, epoxy resin, polyester resin, or modified resins thereof, these A combination of two or more types can be mentioned. In addition, examples of the resin-based water-based paint include dissolution type, emulsion-type, and dispersion-type water-based paints.
On the other hand, examples of the solvent used for the oil-based paint include aromatic hydrocarbons such as toluene and xylene, acetates such as ethyl acetate and methyl acetate, ketones such as methyl ethyl ketone and methyl isopropyl ketone, isopropyl alcohol, and butyl alcohol. Examples thereof include one or a combination of two or more selected from alcohols, various aliphatic hydrocarbons, glycol ethers and the like. Furthermore, as the resin used for the oil-based paint, for example, vinyl resin, acrylic resin, urethane resin, fluororesin silicone resin, acrylic silicone resin, epoxy resin, polyester resin, etc., or modified resins thereof, these two types The above combination is mentioned.

  Further, the clear layer is not particularly limited. For example, acrylic resin, polyester resin, alkyd resin, epoxy resin, polyamide resin, silicone polyester resin, silicone acrylic resin and fluororesin, and modification of these resins Resins can be mentioned, and two or more of these resins can be used in combination. Furthermore, these resins can be used as a so-called lacquer type or in combination with a curing agent. Examples of the curing agent include amino resins such as melamine resins, polyepoxy compounds, and blocked polyisocyanate compounds. Further, an active energy ray curable resin may be used as the clear layer. Examples of the active energy ray-curable resin include monomers, oligomers, and polymers containing ethylenically unsaturated groups. The above-mentioned active energy ray-curable resin is usually used together with a photopolymerization initiator.

  Therefore, in the above-mentioned decorative board, the colored paint layer is preferably a decorative board that is a transparent colored paint layer that is transparent to such an extent that the color tone of the substrate layer can be visually recognized from the surface side.

  In this decorative board, the non-uniformity of the color tone of the lower substrate layer can be visually recognized from the surface side of the decorative board. For this reason, combined with the pattern formed by the wood grain pattern layer, a more natural design can be imparted to the decorative board. Moreover, since the pattern due to the non-uniformity of the color of the substrate layer is unique to each substrate layer, it is not possible to form a decorative board with the same design. The decorative board can have a more natural appearance (design).

  Furthermore, in the above-mentioned decorative board, the colored paint layer may be a decorative board including a wiping colored paint layer formed by wiping after applying the colored paint.

  In this decorative board, since the colored paint layer includes the wiping colored paint layer, the gradation and non-uniformity in the decorative board are further improved. It is thought that the transition of the material and the non-uniformity of the abrupt change that the substrate layer (for example, natural wood veneer) has become clearer by wiping coloring.

  Furthermore, in the above-described decorative board, the colored paint layer may be a decorative board including a complementary color paint layer that supplements the color tone of the decorative surface.

  In this decorative board, since the complementary paint layer is included in the colored paint layer, the gradation on the decorative board is further improved. This is probably because the color layer (thickness through which the pattern layer permeates) becomes thick, so that the color component forming the pattern layer spreads well.

  Furthermore, it is good to set it as the above-mentioned decorative board which is the above-mentioned decorative board formed with the said colored paint layer, without forming a discard layer in the said board | substrate layer.

  Since this decorative board includes a colored paint layer without forming a paint layer, the gradation on the decorative board is further improved. Since the disposing layer has a function to make the transition of the material layer of the substrate layer (for example, natural wood veneer) gradually change, the gradation feeling is improved by not providing the disposing layer. It is thought that it can be made.

  The decorative board according to any one of the above, wherein the substrate layer is made of wood, and the pattern layer is a decorative board that is a wood grain pattern layer in which a wood grain pattern is printed as the pattern.

  In this decorative board, the substrate layer is made of wood (a veneer or a solid material), and has a wood grain pattern layer printed with a wood grain pattern as the pattern layer. In other words, the wood grain pattern layer formed on the decorative board of the present case with respect to the printed wood grain pattern, the ink spreads naturally at the edge part of the wood grain pattern, and its color tone is from the wood grain pattern layer to the surrounding wood grain pattern layer. It shows a pattern that naturally transitions in a gradation toward the part that does not form the pattern. For this reason, it becomes a decorative board which has a wood grain pattern appearance that is particularly close to natural grain and has a good gradation of wood grain pattern.

  Further, in this decorative board, the colored paint layer may be an opaque colored paint layer in which a pattern due to a color difference such as a grain of the substrate layer as a base cannot be visually recognized from the surface side. On the contrary, it is good also as a transparent coloring paint layer which can visually recognize the pattern by the difference in colors, such as the grain of the board | substrate layer used as a foundation | substrate, from the surface side.

  In the wood of the substrate layer that is the base, not only the color difference between the summer and winter eyes of the grain, but also the local color difference (non-uniform color) of the wood There is a case. For example, when sapwood such as larch produces a blue-colored part due to blue-discoloring bacteria, spotted or striped white parts occur due to deposition of inorganic substances such as silica in teak, etc. In the case where there is a black core, the color difference between the heartwood part and the sapwood part occurs in zelkova and cedar as in the case of the source flat material. Moreover, even if there is no clear discoloration, wood is a natural product, so there are cases in which there is a difference in color even when compared between the summer eyes and between the winter eyes.

Conventionally, such color non-uniformity has been considered to hinder the uniformity of the color tone of the substrate layer used in the decorative board. For this reason, avoiding the use of wood that causes such nonuniformity in the substrate layer, or performing treatments such as decoloring and coloring, may cause the nonuniformity in color tone to disappear or disappear.
However, this non-uniform color tone is useful for obtaining a more natural woodgrain decorative board design as a unique pattern for each piece of wood.
Therefore, it is preferable to use a transparent colored paint layer colored such that the difference in local color of wood can be visually recognized from the surface side as the colored paint layer. This is because the non-uniformity of individual colors of the substrate layer appears on the decorative board and can be regarded as a more natural woodgrain design.

  Furthermore, in the above-mentioned decorative board, the substrate layer has a concave portion formed by a conduit hole on the decorative surface, and the colored paint layer is formed by eye-repellent coating that leaves the concave portion. It is better to make a decorative board.

  In this decorative board, a concave portion constituted by a conduit hole is left by eye-repellent painting (open pore painting or semi-open pore painting). For this reason, the thickness of the clear layer changes between the concave portion and other portions, and a pattern caused by the difference in the thickness of the clear layer can be generated, and further, a natural design can be imparted to the decorative board it can.

It is explanatory drawing which shows the expanded cross-section of the decorative board concerning this embodiment. (a) is a photograph of the decorative board 10 according to Example 1, and (b) is a photograph showing the design of the wood grain pattern of the decorative board KB according to Comparative Example 1. It is the photograph which observed the mode of the surface of the decorative board KB concerning Example 1 and 1 comparative example 1. FIG. Example 1 shows the case where ink is printed in the form of dots by an inkjet method on a printing plate in which a colored paint layer 3 is formed on a veneer 2, (a) after printing (clear layer not formed) (A) is an explanatory diagram showing the ink landing part, (c) is an explanatory diagram showing the state of the ink immediately after ink landing, and (d) is the ink after 0.1 second has elapsed since ink landing. FIG. 5E is an explanatory diagram illustrating the state of ink after 0.2 seconds have elapsed since ink landing. A case where the ink is printed in the form of dots by an ink jet method on a printing plate in which a colored paint layer and a transparent paint layer (sanding sealer) are formed on a veneer according to Comparative Example 1 is shown. (A) is an explanatory view showing an ink landing portion, (c) is an explanatory view showing the state of ink immediately after ink landing, (D) is 0. 0 after ink landing. FIG. 5 is an explanatory diagram showing the state of ink after the lapse of 1 second, and (e) is an explanatory diagram showing the state of ink after the lapse of 0.2 seconds from the ink landing.

Embodiments of the present invention will be described with reference to the drawings.
The decorative board 10 concerning Example 1 among this embodiment is a decorative plywood which added the wood grain pattern to the decorative surface of the plywood 9 by printing, as shown to FIG.1 and FIG.2 (a). Among these, the plywood 9 has the veneer 2 which is a board | substrate layer on the surface of the base material layer 1 which consists of a lauan plywood. On the decorative surface 2a, which is the surface of the veneer 2, a colored paint layer 3, a wood grain pattern layer 4, and a clear layer 5 are applied.

  The veneer 2 is made of beech, and the decorative surface 2a has a recess 2b made of a conduit hole. In addition, the veneer 2 is not uniform in overall color tone on the decorative surface 2a, and not only changes in color due to wood grain (summer eyes and winter eyes), but also partially includes nodes (live and dead nodes), marrows. It contains discolored parts such as lines, bark pockets (bark scars), and gum pockets (resin marks). Therefore, even if the same plywood 9 is compared with each other, this plywood 9 exhibits different patterns as a whole due to not only the difference in the pattern of the grain of the veneer 2 but also the presence or absence of the above-mentioned discolored portion. Yes.

After the base surface of the veneer 2a is adjusted by sanding, a colored paint in which a pigment and a urethane dispersion / acrylic emulsion resin are dispersed in water / hydrophilic solvent (manufactured by NATCO, Flora) Is applied to the decorative surface 2a using a sponge roll coater and a scraping roll (wiping color), and includes a transparent and colored coloring including the inside of the concave portion 2b formed by the conduit holes existing in the decorative surface 2a. The paint layer 3 (wiping colored paint layer 3a) is formed. Thereby, the shape of the recess 2b can be seen as a clear bark.
In forming the colored paint layer 3, it is not necessary to form the colored paint layer 3 with one wiping colored paint layer 3a, but a plurality of layers may be used. For complementary color, a complementary color coating layer 3b by complementary color coating in which different color paints are applied using a roll coater or the like may be further applied and applied in multiple layers (see Examples 3 and 4). Further, the colored paint layer 3 may be formed only by the complementary color paint layer 3b (see Examples 5 and 6).

The colored paint layer 3 is a transparent colored paint layer that is transparent to such an extent that the uneven color tone of the veneer 2 can be visually recognized from the surface side.
For this reason, in the decorative board 10 of a present Example, the nonuniformity of the color tone of the veneer 2 which is a lower layer can be visually recognized from the surface side of the decorative board 10.
Further, since the colored paint layer 3 is composed of the above-described colored paint containing the pigment, the ink solvent for forming the wood grain pattern layer 4 described below penetrates. In addition, the ink solvent penetrates into the veneer 2 itself.
Furthermore, the colored paint layer 3 (wiping colored paint layer 3a) is an eye-repellent paint (open pore paint) that leaves the recess 2b.

Next, the grain pattern layer 4 is formed. Specifically, a pigment-based ink (manufactured by Mimaki Co., Ltd.) in which a pigment / dispersant is dispersed in water / hydrophilic solvent is printed on the colored paint layer 3 in a predetermined pattern by an ink jet method, and a grain pattern 4m is formed. The formed grain pattern layer 4 is formed.
In addition to the inkjet method, various printing methods such as a gravure printing method can also be employed as the printing method.

  The solvent in the printed ink permeates and moves to the colored paint layer 3 and also to the veneer 2 without being repelled. Along with this, the pigment / dispersant contained in the ink also moves and penetrates. For this reason, the wood grain pattern layer 4 formed on the printed pattern, that is, the planar shape of the ink dots immediately after being sprayed by the ink jet method (or the planar shape of the ink immediately after being transferred from the original) is the edge of the pattern. In the portion, the ink spreads and spreads naturally, and the color tone is gradually changed from the wood grain pattern layer 4 to the portion where the surrounding wood grain pattern layer 4 is not formed.

Further, the clear layer 5 is formed. Specifically, after the wood grain pattern layer 3 is formed, a UV clear paint made of silica powder and acrylic resin is applied with a roll coater or the like, and cured with ultraviolet rays to form the clear layer 5.
The clear layer 5 may be obtained by applying and curing the clear paint a plurality of times.

  Thus, in this decorative board 10, the edge portion 4e is blurred as compared with the printed shape of the wood grain pattern, and the color tone of the wood grain pattern 4m changes to a gradation at the edge portion 4e. Thereby, it can be set as the decorative board 10 which has the external appearance of the grain pattern closer to natural grain.

  And as above-mentioned, in the decorative board 10, the nonuniformity of the color tone of the veneer 2 which is a lower layer can be visually recognized from the surface side of the decorative board 10. FIG. For this reason, in combination with the wood grain pattern formed by the wood grain pattern layer 4, a more natural pattern is given to the decorative board 10. In addition, since the pattern due to the uneven color tone of the veneer 2 is unique to each veneer 2, the decorative board 10 having the same pattern cannot be formed. Therefore, even if the same decorative board 10 is arranged, it becomes a mutually different pattern and it can be set as the decorative board 10 which exhibits a more natural external appearance (design).

Furthermore, as described above, the veneer 2 has the concave portion 2b formed of a conduit hole on the decorative surface 2a. On the other hand, the colored paint layer 3 is formed by eye-repellent coating (open pore coating or semi-open pore coating. In this example, open pore coating) leaving the recess 2b.
For this reason, the thickness of the clear layer 5 can be changed between the concave portion 2b and other portions, and a pattern caused by the difference in the thickness of the clear layer 5 can be generated. Can be granted.
Prior to the formation of the colored paint layer 3 by applying the colored paint, a so-called discard coating, in which a transparent paint (sealer) made of UV resin is applied and penetrated into the decorative surface 2a of the veneer 2 is performed. As shown by a broken line in FIG. 6, a disposing layer 7 may be formed in the decorative surface 2a (see Examples 2, 4 and 6 described below). In this case, however, the ink solvent that forms the grain pattern layer 4 penetrates the colored paint layer 3 in the same manner, but the ink solvent does not easily penetrate into the veneer 2.

Similarly, decorative plates 20, 30, 40, 50, 60 (see FIG. 1) according to other Examples 2 to 6 were also produced.
Among these, the decorative board 20 of Example 2 is the disposing layer 7 (indicated by the broken line in FIG. 1) prior to the formation of the wiping colored paint layer 3a (colored paint layer 3) in the production of the decorative board 10 of Example 1. (Shown) is added.
Further, the decorative board 30 of Example 3 is a colored paint layer composed of two layers of the wiping colored paint layer 3a and the complementary color paint layer 3b by performing complementary color coating after wiping coloring in the production of the decorative board 10 of Example 1. 3 is formed. In addition, the complementary color layer 3b is coated with a natural color coater (Flora, manufactured by NATCO) in which a urethane dispersion / acrylic emulsion resin is dispersed in water / hydrophilic solvent, as with the wiping color paint, and dried. Formed.
Furthermore, the decorative board 40 of Example 4 is the one in which the scraping layer 7 is formed prior to the formation of the wiping colored paint layer 3a (colored paint layer 3) in the manufacture of the decorative board 30 of Example 3.
For the decorative board 50 of Example 5, in the manufacture of the decorative board 10 of Example 1, instead of forming the wiping colored colored layer 3a, complementary color coating is performed to form the colored paint layer 3 consisting only of the complementary colored paint layer 3b. It is a thing.
Furthermore, the decorative board 60 of Example 6 is obtained by forming the discard coating layer 7 prior to the formation of the complementary color paint layer 3b (colored paint layer 3) in the manufacture of the decorative board 50 of Example 5.

In addition, decorative panels according to Comparative Examples 1 to 3 were also produced.
Among them, the decorative board KB of Comparative Example 1 was manufactured in the manufacture of the decorative board 10 of Example 1, and after the formation of the wiping colored paint layer 3a (colored paint layer 3), prior to the formation of the wood grain pattern layer 4, A transparent paint layer (not shown) is formed by a sanding sealer to suppress ink bleeding during wood grain printing on the colored paint layer 3 (see FIG. 2B). That is, the decorative board of Comparative Example 1 is different from the decorative board 10 of Example 1 only in that a transparent paint layer by a sanding sealer is provided between the colored paint layer 3 and the wood grain pattern layer 4. The sanding sealer was formed by applying a transparent paint made of UV resin equivalent to the clear layer with a natural roll coater and curing it with ultraviolet rays.

  Further, the decorative board of Comparative Example 2 differs from the decorative board 60 of Example 6 only in that a transparent paint layer is formed by a sanding sealer prior to the formation of the wood grain pattern layer 4. Similarly, the decorative board of Comparative Example 3 differs from the decorative board 50 of Example 5 only in that a transparent paint layer is similarly formed by a sanding sealer.

  About the decorative board 10-60 of Examples 1-6 mentioned above and the decorative board of Comparative Examples 1-3, the structure is put together in Table 1, and is described.

Then, about the decorative board 10, 20, 30, 40, 50, 60 concerning Examples 1-6, and the decorative board KB concerning Comparative Examples 1-3 etc., the gradation feeling in the wood grain pattern 4m (wood grain pattern layer 4) The quality of the product was examined.
A part of the wood grain pattern 4m of the decorative board 10 of the first embodiment shown in FIG. 2 and the decorative board KB of the first comparative example is shown in FIG. The column (b) was taken at a magnification of 4 times the photo in the column (a), and the column (c) was taken at a magnification 18 times that of the photo in the column (a).
FIG. 4 and FIG. 5 are explanatory diagrams showing how the ink bleeds when the ink is printed in the form of dots by the ink jet method on the printing plate in which the colored paint layer 3 is formed on the veneer 2. It is. Among these, (a) is an enlarged photograph (photograph in the column (c) of FIG. 3) of the decorative board after printing (clear layer not formed). (A) is an explanatory view showing an ink landing part in the photograph (a). Further, (c) is an explanatory diagram showing the state of ink immediately after ink landing, (d) is an explanatory diagram showing the state of ink after 0.1 second has elapsed since ink landing, and (e) is 0.2 after ink landing. It is explanatory drawing which shows the state of the ink after second progress.

As can be easily understood by referring to the photographs and figures of FIGS. 3 and 5, in the decorative board KB of Comparative Example 1, the ink dots sprayed by the ink jet method hardly spread after landing and therefore blur. It turns out that it becomes the grain pattern layer 4.
As described above, in the decorative board KB of Comparative Example 1, after the colored paint layer 3 is formed, the transparent paint layer by the sanding sealer is formed prior to the formation of the wood grain pattern layer 4. For this reason, the ink solvent that becomes the wood grain pattern layer 4 does not penetrate into the colored paint layer 3 after landing, and therefore the pigment / dispersant contained in the ink does not move or penetrate. Thus, it is understood that this is because the shape immediately after the ink landing is maintained and dried to become the wood grain pattern layer 4.
Thus, in the decorative board KB of Comparative Example 1, the edge of the wood grain pattern 4 formed by printing remains clearly, and the gradation in the wood grain pattern 4m is poor (expressed as x in Table 1). )Met.

On the other hand, as can be easily understood by looking at the photographs and figures of FIGS. 3 and 4, unlike the comparative example 1, in the decorative board 10 of Example 1, the ink dots sprayed by the ink jet method are immediately after landing. It can be seen that it spreads in a short period of time, and hence blurring occurs, resulting in the grain pattern layer 4.
In the decorative board 10 of Example 1, the wood grain pattern layer 4 is formed directly after the colored paint layer 3 is formed, and unlike the comparative example 1, the transparent paint layer by the sanding sealer is not formed. The colored paint layer 3 is also formed of a material (in this example, urethane dispersion / acrylic emulsion resin) that allows the ink solvent to penetrate. In addition, the ink solvent, the color material, and the like easily penetrate into the veneer 2 without being coated. For this reason, the solvent of the ink used as the wood grain pattern layer 4 immediately penetrates the colored paint layer 3 after landing, and the pigment / dispersant contained in the ink also moves and penetrates along with this. In this way, the wood grain pattern layer 4 with blurring is obtained.
Thus, in the decorative board 10 of Example 1, among the grain patterns of the grain pattern layer 4 formed by printing, the edge portion is blurred and unclear, and the color tone from the grain pattern layer 4 to the surrounding grain pattern layer Towards the part that does not form 4, it shows a pattern that changes naturally in a gradation. Thus, the gradation of the 4 m wood grain pattern was particularly good (expressed as ◎ in Table 1).

Similarly, for the decorative boards 20 to 60 of Examples 2 to 6, the gradation of the wood grain pattern was inspected.
The gradation feeling was evaluated in three stages, with 特 に being particularly good, ○ being good, and × being bad.

  Table 1 shows the results of Examples 1 to 6 and Comparative Examples 1 to 3. From these results, it can be seen that in the decorative plates 10 to 60 of Examples 1 to 6, both are 化粧 or ○ and a good gradation of grain pattern is obtained. On the other hand, as described above, in the decorative board KB of Comparative Examples 1 to 3, the gradation in the wood grain pattern 4m was poor.

Subsequently, the decorative plate 10 to 60 according to Examples 1 to 6 and the decorative plate KB according to Comparative Examples 1 to 3 were examined for the quality of the pattern unevenness of the decorative plate 10.
As described above, the colored paint layer 3 used in Example 1 and the comparative example is a transparent colored paint layer that is transparent to the extent that the uneven color tone of the veneer 2 can be visually recognized from the surface side. .
In the decorative board 10 or the like, the uneven color tone of the lower veneer 2 can be visually recognized from the surface side of the decorative board 10 or the like. For this reason, combined with the pattern formed by the wood grain pattern layer 4, a more natural design can be imparted to the decorative board 10 or the like. In addition, the pattern due to the uneven color tone of the veneer 2 is unique to each veneer 2, and thus it is not possible to form a decorative board with the same design. It can be set as the decorative board 10 which becomes a different pattern and exhibits a more natural appearance (design).
Further, since the veneer 2 having a color change can be used in this way, the low-quality wood having a color change (which may have a color change), which has been conventionally avoided to be used for the veneer 2, is not uniform. It can be used as a veneer that can enhance the feeling. Further, there is an advantage that the processing such as decoloring of the veneer that has been necessary for the discolored portion is unnecessary or lightened (simplified).
In addition, this non-uniform feeling was also evaluated in three stages, with 特 に being particularly good, ○ being good, and × being bad. This result is also shown in Table 1.

According to this evaluation result, about Example 1-6 about this non-uniform feeling, all were evaluation of (double-circle) or (circle), On the other hand, although Comparative example 1 was evaluation of (circle), comparative example 2, 3 All were evaluated as x.
The reason why the evaluation of Comparative Examples 2 and 3 is low (becomes x) is that, prior to the formation of the wood grain pattern layer 4, the transparent paint layer (sanding sealer) in which the color components forming this wood grain pattern layer are less likely to permeate is formed. In addition, both gradation and non-uniformity are considered to have decreased. This point is supported by the fact that the gradation feeling and the non-uniformity are good in Examples 5 and 6 which are different from Comparative Examples 2 and 3 only in that no transparent paint is provided. On the other hand, in Comparative Example 1, although the transparent paint layer (sanding sealer) is formed, the discarding layer is not formed, but the wiping colored paint layer 3a is formed. It is thought that it became.

  Next, the formation of the wiping colored paint layer 3a and the influence on the gradation and non-uniformity will be examined. Specifically, the evaluation results are shown again in Table 2 for the results of Examples 3, 5, 4, and 6 that differ only in the presence or absence of the wiping colored paint layer 3a.

According to the results of Table 2, when Examples 3 and 5 and Examples 4 and 6 are compared, the feeling of gradation is higher in Examples 3 and 4 in which the colored paint layer 3 includes the wiping colored paint layer 3a. It can be seen that better results can be obtained in the sense of non-uniformity.
The wiping coloring paint layer 3a has a veneer 2 (substrate layer), which is a natural woody material, and has a gradual change in composition (gradation) or non-uniformity (non-uniformity) due to a sudden change. It is considered that this is because it can be made clear by forming (Examples 3 and 4).
In Example 2, the wiping coloring paint layer 3a is provided, but it is considered that the gradation feeling is lowered by the provision of the discard coating layer 7. Moreover, although the wiping coloring paint layer 3a was provided also in the comparative example 1, since the feeling of gradation fell because the transparent paint layer (sanding sealer) was provided so that it may understand compared with Example 1, evaluation has fallen. .

  Further, the formation of the colored paint layer 3 including the complementary color paint layer 3b and the influence on the gradation and non-uniformity will be examined. Specifically, the results of evaluation of Examples 1, 3, 2, and 4 that differ only in the presence or absence of the complementary color paint layer 3b are shown again in Table 3.

  According to the results in Table 3, there is no difference in the comparison between Examples 1 and 3, but there is a difference in gradation feeling in the comparison between Examples 2 and 4. From this, it can be seen that when the colored paint layer 3 includes the complementary color paint layer 3b, a good effect is provided in the gradation. However, even in the same colored paint layer 3, it is considered that the degree of the effect is lower than the effect of the wiping colored paint layer 3a. This is because in Examples 1 and 3 in which the discard layer 7 is not provided, the presence or absence of the complementary color paint layer 3b does not affect the evaluation of the gradation. However, in Examples 2 and 4 in which the discard layer 7 is provided, the gradation feeling is better in the Example 4 in which the complementary color paint layer 3b is provided.

  Next, the formation of the discard layer 7 by discarding and the effect on the gradation and non-uniformity will be examined. Specifically, for the results of Examples 1 to 6 that differ only in the presence or absence of the discard layer 7, the evaluation results are shown again in Table 4.

According to the results of Table 4, there is no difference in the comparison between Examples 3 and 4 and Examples 5 and 6, but in the comparison between Examples 1 and 2, when the discard layer 7 is formed, the gradation feeling is lowered. There is a difference. From this, it can be seen that it is rather unfavorable to form the discard layer 7 on the decorative surface 2a first in order to obtain a good gradation.
When the disposing layer 7 is provided, the coloring material of the coloring paint layer is less likely to soak, and the transition of the material gradually changing in composition, which the veneer 2 (substrate layer), which is a natural woody material, has been wiped colored. This is considered to be because it becomes difficult to clarify the formation of the paint layer 3a. However, the presence or absence of the discard layer 7 is considered to be less effective than the effect of the wiping colored paint layer 3a. This is because in Examples 3, 4, 5 and 6 in which the complementary color paint layer 3b is provided, the presence or absence of the discard layer 7 does not affect the evaluation of gradation.

In the above, the present invention has been described with reference to the embodiments (Examples 1 to 6). However, the present invention is not limited to the above-described embodiments, and can be appropriately modified and applied without departing from the gist thereof. Needless to say, it can be done.
For example, in each of Examples 1 to 6, as the colored paint layer 3 (wiping colored paint layer 3a), in addition to the pigment, a colored paint obtained by dispersing a urethane dispersion / acrylic emulsion resin in water / hydrophilic solvent was used. An example is shown. However, it may be a colored paint layer 3 formed using a colored paint made of other water-based paint or oil-based paint.
In the printing of the wood grain pattern layer 4, an example using a pigment-based ink in which a pigment / dispersant is dispersed with water / hydrophilic solvent is shown. However, in addition to the pigment, a dye may be used, and the wood grain pattern layer 4 formed using an ink containing a resin may be formed.
In addition, as described above, the example in which the colored paint layer 3 (wiping colored paint layer 3a) is formed by eye-repellent coating that leaves the concave portion 2b of the veneer 2 has been shown. good.

10, 20, 30, 40, 50, 60, KB Decorative plate 9 Plywood 1 Base material layer 2 Veneer (substrate layer)
2a Decorative surface 2b Concave part (concave part comprised of conduit holes)
3 Colored paint layer (transparent colored paint layer)
3a Wiping colored paint layer (colored paint layer)
3b Complementary color paint layer (colored paint layer)
4 Wood grain pattern layer (pattern layer)
4m grain pattern (pattern)
4e Edge portion (wood pattern) 5 Clear layer 7 Discard layer

Claims (7)

A substrate layer forming a decorative surface;
A colored paint layer provided on the decorative surface;
A pattern layer in which a pattern is directly printed on the colored paint layer,
A transparent clear layer covering the colored paint layer and the pattern layer,
Of the substrate layer and the colored paint layer, at least the colored paint layer is made of a material into which the solvent of the ink used for printing the pattern layer penetrates.
The pattern layer is a decorative board in which the edge portion is blurred and the color tone of the pattern changes in a gradation at the edge portion. The decorative board according to claim 1,
The colored paint layer is
A decorative board which is a transparent colored paint layer that is transparent to such an extent that the unevenness of the color tone of the substrate layer can be visually recognized from the surface side. A decorative board according to claim 1 or claim 2,
The colored paint layer is
A decorative board comprising a wiping colored paint layer formed by wiping after applying a colored paint. It is a decorative board of any one of Claims 1-3,
The colored paint layer is
A decorative board comprising a complementary color paint layer for supplementing the color tone of the decorative surface. It is a decorative board of any one of Claims 1-4,
A decorative board formed by forming the colored paint layer without forming a paint layer on the substrate layer. It is a decorative board of any one of Claims 1-5,
The substrate layer is made of wood,
The said pattern layer is a decorative board which is the wood grain pattern layer which printed the wood grain pattern as the said pattern. The decorative board according to claim 6,
The substrate layer has a recess formed by a conduit hole on the decorative surface,
The colored paint layer is a decorative board formed by eye-repellent coating that leaves the recess.