JP2010208141A - Wood decorative plate and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereoscopic-feeling wood decorative plate, capable of utilizing various kinds of woodgrain patterns, and having a color tone change of natural feeling. <P>SOLUTION: A woodgrain veneer 12 is integrally bonded onto a substrate 10 by a colored adhesive 11, a surface of the woodgrain veneer 12 applied with a color paint 20 is subjected to shot blast treatment, and a soft portion of the woodgrain veneer 12 is removed together with the color paint 20, in this wood decorative plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wooden decorative board having a colorful and natural texture, and a method for producing the same.

Conventionally, as a wooden decorative board, for example, in Patent Documents 1 and 2, a colored paint containing a pigment is entirely applied to an uneven surface obtained by brushing the surface of a wooden board, before drying or A method for producing a wooden decorative board is disclosed in which the colored paint adhering to the convex portion after drying is removed or a part thereof is removed.
Further, in Patent Document 3, a multi-layered coating layer is formed on a sheet fabric, and then embossed, and then subjected to sharpening by contacting a rotating elastic buff to provide a color-coded three-dimensional pattern. A method of manufacturing a three-dimensional pattern cosmetic material is disclosed.

JP 57-39911 A JP 58-137472 A JP 2008-105256 A

However, in the above-mentioned Patent Documents 1 and 2, since the colored paint on the convex portion is scraped off through an elastic roll, a rubber blade, or a hard roll such as an iron roll, the thick colored paint remains in the concave portion. On the other hand, the colored paint remains extremely thin on the convex portion. For this reason, a wooden decorative board having a clear color tone contrast can be obtained in appearance, but it is difficult to obtain a wooden decorative board having a variety of color tones and a three-dimensional appearance.
Further, in the above-mentioned Patent Document 3, since the three-dimensional pattern is determined mainly by embossing, it is difficult to express a wide variety of wood grain patterns, and there is a problem that there are limits to the patterns that can be expressed.
In view of the above-described problems, the wood decorative board according to the present invention is intended to provide a wood decorative board that can express a wide variety of wood grain patterns, has various natural color changes, and has a three-dimensional effect.

  In order to solve the above problems, the wooden decorative board according to the present invention is a wooden decorative board in which a wooden veneer is integrally bonded to the surface of a substrate, and the wooden veneer is bonded to the substrate with a colored adhesive. In addition to the integration, the surface of the wood veneer coated with a colored paint is subjected to shot blasting to remove the soft portion of the wood veneer together with the colored paint.

According to the present invention, the wood grain pattern of wood can be utilized by using the wood veneer, so that a wood decorative board having a wide variety of patterns can be obtained.
Moreover, since the soft part of the wood veneer is removed by shot blasting, a wood decorative board rich in three-dimensional effect can be obtained.
In particular, by applying shot blasting, it is possible to expose not only wood veneer wood and colored paints, but also colored adhesives, so that not only has a variety of colors, but the color tone changes naturally. Therefore, a wooden decorative board having a more natural texture can be obtained.

As a method for producing a wooden decorative board according to the present invention, a single board attaching step for attaching and integrating a wooden veneer with a colored adhesive on the surface of a substrate, and applying and penetrating a colored paint on the surface of the wooden veneer And a shot blasting process in which the surface of the wood veneer is subjected to shot blasting to remove a soft portion of the wood veneer together with the colored paint.
According to the present invention, the wood grain pattern of wood can be utilized by using the wood veneer, so that a wood decorative board having a wide variety of patterns can be obtained.
Moreover, since the soft part of the wood veneer is removed by shot blasting, a wood decorative board rich in three-dimensional effect can be obtained.
In particular, by performing shot blasting, not only wood veneer wood, colored paint but also colored adhesives are exposed, so that not only has a variety of colors, but the color tone changes naturally. Therefore, the manufacturing method of the wooden decorative board which has a further natural texture is obtained.

As an embodiment of the present invention, the coloring step and the shot blasting step may be continuously and alternately repeated at least twice.
According to this embodiment, the color which can be expressed by performing shot blasting increases, and a wooden decorative board having a more diverse pattern can be obtained.

As other embodiment of this invention, you may give the resin penetration | infiltration process of apply | coating and osmose | permeating a osmotic resin to the said wood single board.
According to this embodiment, the colors of the colored adhesive and the colored paint are more clearly expressed, and the design properties are improved.

A different embodiment of the present invention includes a flat surface forming step of applying and filling a filling resin to the wood veneer to form a flat surface, and applying a transparent resin to the surface of the wood veneer to form a transparent coating film. You may give the transparent coating film formation process to form.
According to the present embodiment, the uneven surface generated by shot blasting with the filling resin is flattened and is coated with the transparent coating film with the transparent resin, so that there is an effect that a beautiful and high-strength wood decorative board can be obtained. .

It is sectional drawing which shows the manufacturing process of the wooden decorative board which concerns on this invention. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG. It is sectional drawing which shows the manufacturing process of the wooden decorative board following FIG.

  As shown in FIG. 1 to FIG. 8, the wood base material according to the present invention has a decorative base material obtained by sticking and integrating a wood veneer 12 with a colored adhesive 11 on the surface of a substrate 10 as a coloring step, a shot. It is manufactured through a blasting process, a resin infiltration process, a flat surface forming process, and a transparent coating film forming process.

  Examples of the substrate 10 include wood boards such as wood, plywood, MDF, and particle board, inorganic boards such as volcanic glassy multilayer boards and gypsum boards, and those obtained by appropriately stacking and integrating these.

Examples of the colored adhesive 11 to which a color pigment is added in order to stick and integrate the wood veneer 12 on the substrate 10 include ethylene vinyl acetate resin, urea melamine resin, and urethane resin.
In particular, examples of the color pigment to be added include water-based and solvent-based pigments.

As shown in FIG. 2, the coloring step is a step of applying and penetrating the colorant 20 to the wood veneer 12 for coloring, and the coating amount is preferably 200 to 600 g / m ² . This is because when the amount is less than 200 g / m ² , a portion that cannot penetrate is generated and a desired coloring state cannot be obtained, and when it exceeds 600 g / m ² , warpage due to curing shrinkage increases.

  The wood veneer 12 can apply natural wood in general and is not particularly limited. For example, conifers such as pine, tsuga, and hinoki, and broad-leaved trees such as oak and tamo can be used, and those having a thickness of about 0.2 to 3.0 mm can be used. This is because if it is less than 0.2 mm, it is difficult to obtain a three-dimensional design, and if it exceeds 3.0 mm, it is difficult for UV waves to reach the impregnated resin, it is difficult to cure, and productivity is reduced. .

  As shown in FIG. 3, the shot blasting step is a step of subjecting the colored wood veneer 12 to shot blasting. Shot blasting is a method of removing the soft portion 14 by causing an abrasive to collide with the surface of the wood veneer 12 by natural dropping or pneumatic injection. Examples of the abrasive include glass beads and alumina particles having a particle size of about 45 to 150 μm. This is because when the particle size is less than 45 μm, force is required for shot blasting, productivity is lowered, and the apparatus is enlarged. On the other hand, if the thickness exceeds 150 μm, scratches tend to remain, and the surface of the veneer becomes fluffy, resulting in an uneven design. Further, shot blasting is adjusted by various factors such as veneer tree type, veneer thickness, shot strength, shot amount, shot area, feed rate, actual finished design, and productivity. For example, the pressure and feed rate of shot blasting may be adjusted according to the required design expression, wood veneer 12 and the like. Generally, the pressure is 0.10 to 0.50 MPa, and the feed rate is 5 to 40 m / min. Is preferred.

  As shown in FIG. 4, the resin infiltration step is a step of applying and infiltrating the infiltration resin 21 onto the surface of the wood veneer 12 subjected to shot blasting. In particular, fine scratches remain on the entire surface of the wood veneer 12 that has been subjected to the shot blasting treatment, while the penetrating resin has high permeability. For this reason, the osmosis | permeation resin 21 can osmose | permeate deep inside the wood veneer 12, and the color of the said coloring adhesive agent 11 and the coloring agent 20 expresses more clearly. In particular, since not only the soft portion 14 of the wood veneer 12 but also the hard portion 13 is subjected to the shot blasting treatment, the osmotic resin 21 uniformly permeates the entire surface, and uneven penetration can be suppressed.

As the penetrating resin 21, for example, a resin mainly composed of a reactive monomer, for example, a photopolymerization initiator added to an oligomer such as an acrylate or methacrylate or a polymer alone or a mixture thereof is used. It is done.
Examples of the photopolymerization initiator include bisacyl phosphine oxide or monoacyl phosphine oxide. Furthermore, generally used tin compounds, zinc compounds, amino compounds, and the like may be added as catalysts.

  The osmotic resin 21 is preferably a resin having low viscosity and high permeability. More specifically, when the penetrating resin 21 is applied to the surface of a wood veneer, the viscosity is preferably 100 Pa · s or less. By setting the viscosity to 100 Pa · s or less, the permeability can be enhanced. The viscosity of the penetrating resin 21 can be adjusted by diluting with a monomer or by heating. For example, when the surface temperature of the wood veneer 12 is preliminarily heated to 40 to 50 ° C. and the temperature reaches 10 to 20 ° C. lower than this temperature, the osmotic resin 21 is applied, thereby The permeability can be improved.

  Coloring pigments and dyes can be added to the penetrating resin 21, but dyes are excellent for maintaining transparency, while pigments are suitable for enhancing the hiding property while maintaining transparency. . The dye or pigment may be added in an amount of 0.1% by mass or more and 1.0% by mass or less based on the resin. This is because if the amount is less than 0.1% by mass, the desired clear color cannot be obtained, and if it exceeds 1.0% by mass, the UV wave is blocked and the resin is hardly solidified. Further, as a means for applying the penetrating resin 21, a sponge roll coater, a natural reverse coater, a rubber roll coater, a knife coater, or the like is used so that the surface is flattened.

  The coloring step and the shot blasting step may be performed alternately not only once but also a plurality of times as necessary. For example, as shown in FIGS. Resin 22 may be applied. Thereby, there exists an advantage that the woody decorative board provided with various patterns and various patterns can be obtained.

  In the resin filling step, as shown in FIG. 7, a flat surface is formed by filling the filling resin 23 into at least a recess formed by scraping by the shot blasting process on the surface of the wood veneer 12. It is a process.

  As shown in FIG. 8, the transparent coating film forming process is a process of forming a transparent coating film by applying and curing a transparent coating resin 24. The transparent coating film 24 is preferably a resin having a pencil hardness of B or more when the thickness is 100 μm on a glass plate. And it is preferable to form the transparent coating film 24 formed on the surface of the wood veneer 12 with a thickness of 100 μm or more and 200 μm or less. By forming such a transparent coating film 24, it is possible to improve the scratch resistance of the wooden decorative board. Of course, the convex portion is originally a hard evening material (summer material), and the concave portion is filled with the filling resin 23, so that there is no problem in strength even with the transparent coating film 24 having a thickness of less than 100 μm. .

  The filling resin 23 and the transparent coating resin 24 may use resins having the same composition as the above-mentioned penetrating resins 21 and 22. If necessary, not only the blending thereof, but also a polymerization initiator, a dye, and a pigment Can be selected, and the viscosity can be adjusted for use.

  Moreover, you may irradiate an active energy ray from the surface side of the wood veneer 12 in order to harden the osmosis | permeation resin 21,22, the filling resin 23, and the transparent coating film resin 24 as needed. An ultraviolet ray or an electron beam is used as the active energy ray. In particular, when the active energy ray is ultraviolet light, an auxiliary agent such as a photopolymerization initiator, a sensitizer, a light stabilizer, an ultraviolet absorber, or a storage stabilizer is added to the penetrating resin, filling resin, and transparent coating resin. It may be added.

After laminating single wood veneers with a thickness of 0.5 mm on the surface of a substrate made of 15 mm thick plywood via a vinyl acetate-based colored adhesive containing a black pigment, a hot press (temperature 120 ° C., A decorative base material was obtained by pasting and integrating with a hot pressing time of 50 seconds and a pressure of 8 kgf / cm ² ). Then, an aqueous colorant (red, NATO flora) was applied to the decorative base at a rate of 5 g / m ² and dried with a dryer. Next, shot blasting (0.3 MPa, 10 m / min) was performed with glass beads having a particle diameter of 100 to 150 μm as an abrasive, and the soft part of the wood veneer was ground and floated.
Furthermore, the surface temperature of the decorative base was heated to 40 ° C., and a transparent penetrating resin was applied and permeated at a rate of 100 g / m ² on the surface, and then cured by irradiation with ultraviolet rays. . And it apply | coated with the rubber rotor so that the uneven | corrugated surface by a floating process might be filled with transparent filling resin, and after making flat with an iron reverse coater, the said filling resin was hardened by irradiating with an ultraviolet-ray.
Finally, sample 1 having a transparent coating layer having a uniform thickness was obtained by applying a transparent coating resin and curing it by irradiating ultraviolet rays.
When the sample 1 was visually observed, the color tone of the color adhesive black, the colorant red, and the Hiba wood color changed in a natural texture in a form along the grain, and a deep design High woody decorative material was obtained.

A water-based colorant (red, NATO flora) was applied to the same decorative base material as in Example 1 at a rate of 5 g / m ² and dried with a drier. Next, shot blasting (0.3 MPa, 20 m / min) is performed with glass beads having a particle diameter of 100 to 150 μm as an abrasive, and the soft part of the wood veneer is ground and floated. An aqueous colorant (white, Flora made by Natov) was applied at a rate of 5 g / m ² and dried. Furthermore, the shot blasting process was again performed (0.3 MPa, 20 m / min) in the same manner as described above, and the soft part of the wood veneer was ground and floated. Thereby, in the soft part, the colored adhesive peels off together with the wood and hardly remains, so that the color tone is mainly black of the colored adhesive. In the hard part, the wood was not shaved so much that the colorant remained, but the white part was peeled off and the color tone was mainly red. Also, in the area located between the soft part and the hard part, the part where the wooden part is exposed, the part where the colorant is peeled off, the part where it is not peeled remain, respectively, and wood color, red and white are mixed It became a deep color. Then, the sample 2 was obtained by processing like the above-mentioned Example 1.
Then, when the sample 2 was visually observed, the four colors of the black color of the colored adhesive, the white color of the colorant, the red color, and the wood of the hiba wood changed in a natural texture in a form along the grain. A woody decorative material with a variety of depth and high design was obtained.

A water-based colorant (red, NATO flora) was applied to the same decorative base material as in Example 1 at a rate of 5 g / m ² and dried with a drier. Next, shot blasting (0.3 MPa, 20 m / min) is performed with glass beads having a particle diameter of 100 to 150 μm as an abrasive, and the soft part of the wood veneer is ground and floated. An aqueous colorant (white, Flora made by Natov) was applied at a rate of 5 g / m ² and dried. Furthermore, the shot blasting process was again performed (0.3 MPa, 20 m / min) in the same manner as described above, and the soft part of the wood veneer was ground and floated. Thereby, in the soft part, the colored adhesive peels off together with the wood and hardly remains, so that the color tone is mainly black of the colored adhesive. In the hard part, the wood was not shaved so much that the colorant remained, but the white part was peeled off and the color tone was mainly red. Also, in the area located between the soft part and the hard part, the part where the wooden part is exposed, the part where the colorant is peeled off, the part where it is not peeled remain, respectively, and wood color, red and white are mixed It became a deep color.
Then, the cosmetic base is heated so that the surface temperature is 40 ° C., and a transparent infiltrating resin added with a blue pigment is applied to the surface at a rate of 100 g / m ² and then irradiated with ultraviolet rays. did. Thereafter, the same processing as in Example 1 was performed to obtain Sample 3.
When the sample 3 was visually observed, five colors of black of the colored adhesive, white of the colorant, red, wood color of hiba wood, and blue of penetrating resin were mixed, and the color tone was in line with the grain. The shape of the woody decorative material changed with a natural texture, and was rich and rich in design.

On the surface of a substrate made of 15 mm thick plywood, a lamellar wood plate having a thickness of 0.5 mm is stacked via a vinyl acetate adhesive, which is a colored adhesive containing a white pigment, and hot press (temperature 120). A decorative base material was obtained by pasting and integrating at a temperature of 50 ° C., a hot pressing time of 50 seconds, and a pressure of 8 kgf / cm ² . Then, a water-based colorant (white, NATO flora) was applied to the decorative base at a rate of 5 g / m ² and dried with a dryer. Furthermore, an aqueous colorant (red, NATO flora) was applied again at a rate of 5 g / m ² and dried with a drier. Next, the surface of the wood veneer is shot blasted (0.3 MPa, 10 m / min) with glass beads having a particle size of 100 to 150 μm as an abrasive to grind the soft part of the wood veneer, gave. As a result, almost no coloring of the soft part remained, only coloring of the hard part remained, and white coloration was performed first, so that it was red without being mixed with the color of the hard part wood.
And it heated so that the surface temperature of the said makeup | decoration base material might be 40 degreeC, transparent infiltration resin was apply | coated and infiltrated in the ratio of 100 g / m < ² >, and the ultraviolet-ray was irradiated. Furthermore, after applying with a rubber rotor so that the uneven | corrugated surface by a floating process might be filled with a transparent filling resin and making it flush with an iron reverse coater, the said filling resin was hardened by irradiating with an ultraviolet-ray. And after apply | coating transparent coating-film resin, the thin transparent coating film which has uniform thickness was formed by irradiating and hardening | curing an ultraviolet-ray.
Finally, a sander treatment is performed, and an aqueous colorant (white, NATO flora) is applied and colored at a rate of 5 g / m ² , and then a transparent resin is applied and cured by irradiation with ultraviolet rays. Sample 4 having a thin transparent coating layer was obtained.
When the sample 4 was visually observed, the whole became pale white, and the color tone of the white of the colored adhesive, the white of the colorant, and the color of the wood of the hiba wood naturally changed in a form along the grain. As a result, a woody decorative material with a bright and natural texture and high designability was obtained.

  Of course, the present invention is not limited to the above-mentioned wooden decorative board, and can be applied to other wooden decorative boards.

10: Substrate 11: Coloring adhesive 12: Wood veneer 13: Summer wood (evening wood)
14: Spring wood (early wood)
20: Colorant 21: Penetration resin 22: Penetration resin 23: Filling resin 24: Transparent coating resin

Claims (5)

It is a wooden decorative board that is made by sticking and integrating a single wooden board on the surface of the substrate,
The wood veneer is bonded and integrated to the substrate with a colored adhesive, and the surface of the wood veneer coated with a colored paint is subjected to shot blasting to remove the soft part of the wood veneer together with the colored paint. A wooden decorative material characterized by that. A veneer sticking step of sticking and integrating a wood veneer with a colored adhesive on the surface of the substrate,
A coloring step of applying and penetrating a colored paint on the surface of the wood veneer;
A shot blasting process for performing a shot blasting process on the surface of the wood veneer and removing a soft part of the wood veneer together with the colored paint,
A method for producing a wooden decorative board, comprising:   The method for producing a wooden decorative board according to claim 2, wherein the coloring step and the shot blasting step are alternately and continuously repeated at least twice.   The method for producing a wooden decorative board according to claim 2 or 3, further comprising a resin infiltration step of applying and infiltrating the wood veneer with a permeation resin. A flat surface forming step of applying and filling a filling resin to the wood veneer to form a flat surface;
A transparent coating film forming step of forming a transparent coating film by applying a transparent resin on the surface of the wood veneer;
The method for producing a woody decorative board according to claim 4, comprising:

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