JP3916845B2 - Surface treatment method for wood-like molded products - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface treatment method for a wood-like molded article .
[0002]
[Background technology]
In recent years, attempts have been made to give the surface of synthetic resin moldings used in residential interior parts and daily necessities such as grain patterns and color tone similar to natural wood.
As an example of this technique, there is a technique described in JP-A-10-272695. Explaining this technology: Embossing, hairline processing, coloring processing, polishing processing on the surface of a wood-like molded product obtained by mixing resin and raw materials into the pulverized powder obtained by pulverizing the cellulose material and melting it. Apply paint processing. As a result, it is possible to provide a wood-like molded product having a pattern very close to the grain of natural wood on the surface and having a texture such as a touch feeling close to that of natural wood.
[0003]
[Problems to be solved by the invention]
By the way, in the wood-like molded product described in the above-mentioned Japanese Patent Application Laid-Open No. 10-272695, the wood grain pattern formed on the surface is substantially uniform in depth and width. When used for interior / exterior parts and daily necessities, it may be found that the wood is not genuine in appearance, and it has been desired to further improve the appearance quality.
This invention is made | formed in view of the said situation, and it aims at providing the surface treatment method of the wood-like molded product which can further improve the external appearance quality of the grain pattern which should be given to the surface .
[0036]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a surface treatment method for a wood-like molded article formed by mixing and melting cellulose-based fine particles and a resin, and forming the surface of the wood-like molded article. When forming a plurality of groove portions having different depths and widths, the rotation of the groove forming tool comprising a sanding paper having a plurality of protrusions having different heights and widths and a rotating roller around which the sanding paper is wound. The sanding paper is pressed against and rubbed against the surface of the woody molded article by rotating a roller.
[0064]
The invention of the present application is, for example, as shown in FIGS. 1 and 2, a surface treatment method for a wood-like molded article 1 formed by mixing and melting cellulose-based fine particles and a resin, When forming a plurality of groove portions 2 having different depths and widths on the surface of the molded product 1, a sanding paper 5 having a plurality of protrusions having different heights and widths, and a rotating roller 4 around which the sanding paper 5 is wound. In the groove forming tool 3 provided with the above, the sanding paper 5 is pressed and rubbed against the surface of the woody molded product 1 by rotating the rotating roller 4.
[0065]
According to the present invention, when forming a plurality of groove portions 2 having different depths and widths on the surface of a wood-like molded product 1, a groove-forming tool having a plurality of protrusions 6 having different heights and widths is formed into a wood-like shape. Since the surface of the product 1 is rubbed, a large number of the groove portions 2 can be formed on the surface at a time, which facilitates manufacture.
[0066]
The sanding paper 5 is used as the groove forming tool . In this case, the surface (polishing surface) having a large number of particles having different heights and widths is used.
[0068]
Moreover, after forming the several groove part 2 from which both depth and width differ on the surface of the wood-like molded article 1, you may perform coloring process, grinding | polishing process, and coating process. Then, gloss can be given to the surface of the wood-like molded product 1, the deep groove portion 2 has a deep color, the shallow groove portion 2 has a light color, the wide groove portion 2 has a wide colored portion, and a wide width. A colored portion appears narrowly in the narrow groove portion 2, and gradation is formed on the entire surface of the wood-like molded product 1.
[0069]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of the present invention.
As shown in FIG. 1, the wood-like molded product 1 according to the present embodiment is provided with a cavity opened at the end face, and this cavity is formed so as to extend in the longitudinal direction of the wood-like molded product 1. .
[0070]
The wood-like molded product 1 is obtained by fixing a surface particle having a smaller diameter and harder than the powder particle on the outer peripheral surface of the powder particle obtained by grinding the pulverized powder obtained by pulverizing the cellulose material and increasing the specific gravity. A fixed grain is formed, a resin and a pigment are mixed and melted in the fixed grain, and thereafter or simultaneously with melting, it is extruded into a quadrangular prism shape having the cavity.
[0071]
Such a wood-like molded product 1 is used for, for example, a peripheral edge or a baseboard, a stair railing, a stair tread, a sash frame, an indoor side, furniture, a table / counter, etc. as an interior part of a house.
[0072]
The surface of the wood-like molded product 1 is provided with a wood grain pattern composed of a plurality of groove portions 2 having different depths and widths, and a polishing apparatus 3 is used to apply these groove portions 2. The polishing apparatus 3 includes a cylindrical roller 4 that can be rotated in reverse and a sanding paper 5 wound around the rotating roller 4, and the sanding paper 5 is rotated by the rotating roller 4.
[0073]
Further, while rotating the rotating roller 4, the rotating roller 4 is moved in the longitudinal direction of the wood-like molded product 1, and the sanding paper 5 is pressed against the surface of the wood-like molded product 1 and rubbed. Then, a plurality of groove portions 2 having different depths and widths are formed.
[0074]
In addition, the said sanding paper 5 uses what has many protrusions 6 from which both height and width differ.
Hereinafter, the process of forming the groove part 2 in which both depth and width differ on the surface of the wood-like molded product 1 will be described in detail.
[0075]
As shown in FIG. 2 (A), the rotating roller 4 is rotated, and the rotating roller 4 is moved in the longitudinal direction of the wood-like molded product 1 so that a sanding paper 5 having protrusions 6 having different heights and widths is obtained. Press against the surface of the wood-like molded product 1 and rub it.
[0076]
Then, the surface of the wood-like molded product 1 is cut into a groove shape by the protrusion 6, thereby forming a large number of groove portions 2 having different depths and widths on the surface.
Thereafter, another type of sanding paper having protrusions having different heights and widths may be used for polishing again, and the number of times of polishing may be set as appropriate.
[0077]
After the completion of the above steps, the surface of the wood-like molded product 1 is colored as shown in FIG. This coloring process is performed by a wiping stain process.
The wiping stain process is a process in which a paint is applied to the surface of the wood-like molded article 1 and then wiped off before drying to color the groove 2.
[0078]
Thereafter, the surface of the wood-like molded product 1 is dried. In this way, by performing the wiping stain process, the deep groove portion 2 is dark in color, the shallow groove portion 2 is light in color, the wide groove portion 2 has a wide colored portion, and the narrow groove portion 2 is colored. Such a wood-like molded product 1 can be used for a housing exterior product such as an exterior.
[0079]
Further, as shown in FIG. 2 (C), the wood-like molded product 1 may be further polished. In this polishing step, a sanding paper 7 having a fine mesh is used, and the surface of the wood-like molded product 1 is rubbed.
[0080]
Then, the paint applied to a smooth surface other than the groove 2 is deleted, and the paint remains only in the groove 2. At the same time, the unevenness of the coating film formed on the surface of the wood-like molded article 1 and the slight irregularity of the surface of the wooden-like molded article 1 are eliminated by the above-described coloring processing treatment, and a smooth painted ground surface is formed, coloring The contrast between the groove 2 and the flat surface by the processing becomes clear.
[0081]
After the polishing process, a coating process is performed as shown in FIG. This painting process is divided into an intermediate coating operation process and an overcoating operation process. In the intermediate coating operation process, a color sanding sealer is applied to the surface of the wood-like molded product 1. If necessary, a UV coat is applied before or after intermediate coating. When this intermediate coating process is completed, the process proceeds to a top coating process. In the top coating process, the surface of the wood-like molded product 1 is coated.
[0082]
As described above, the surface of the wood-like molded product 1 is formed with the groove portions 2 having different depths and widths, the deep groove portions 2 are dark in color, and the shallow groove portions 2 are light in color and wide in width. 2, the colored portion is wide, the narrow groove portion 2 appears narrowly, and gradation is formed on the entire surface. In addition, it can give gloss and gloss, and can be made closer to the texture of natural wood. Such a wood-like molded product 1 can be used for interior products such as interiors.
[0083]
In the first embodiment, the steps from FIGS. 2A to 2D are performed, but the steps in FIGS. 2B to 2D are omitted and the steps in FIG. Only the process may be used.
[0084]
FIG. 3 is a cross-sectional view showing a second embodiment of the present invention. As shown in FIG. 3, the surface of the wood-like molded product 8 is provided with a wood grain pattern composed of a plurality of grooves 9 having the same width and different depths.
Hereinafter, a method of applying a wood grain pattern composed of a plurality of grooves 9 having the same width and different depths will be described.
[0085]
Similar to the first embodiment, the rotating roller provided in the polishing apparatus is rotated, and the rotating roller is moved in the longitudinal direction of the wood-like molded product 8 so that the sanding paper having low protrusions is made of the wood-like molded product 8. Press against the surface and rub. Thereafter, the surface of the wood-like molded product 8 is further rubbed with sanding paper having high protrusions.
[0086]
Then, the surface of the wood-like molded product 8 is cut into a groove shape by the protrusions, whereby a plurality of groove portions 9 having the same width and different depths can be formed on the surface.
The order in which these sanding papers are used is not limited to this.
Further, the depth of the groove 9 may be three or more. In this case, a plurality of types of sanding paper having different protrusion heights are used.
[0087]
Moreover, as a method of forming the groove 9, for example, there is a method of pressing and rubbing a sanding paper provided with a low protrusion and a high protrusion on the surface of the wood-like molded product 8 in the same manner as described above.
[0088]
In addition, after rubbing once as described above, sanding paper having protrusions of other types may be used for polishing again, and the number of times of polishing may be set as appropriate.
Then, the surface of the wood-like molded product 8 is cut into a groove shape by the protrusions, whereby a large number of groove portions 9 having the same width and different depths can be formed on the surface at once.
[0089]
After the above steps are completed, the surface of the wood-like molded product 8 is colored, dried, polished with a sanding paper having a fine mesh, and painted as in the first embodiment. Since these steps are the same as described above, they are omitted.
[0090]
Thus, on the surface of the wood-like molded product 8, grooves 9 having the same width and different depths are formed, the deep grooves 9 are dark in color, and the shallow grooves 9 are light in color, and the entire surface A gradation can be made. In addition, gloss and gloss can be achieved, making it closer to the texture of natural wood. Such a wood-like molded product 8 can be used for interior products such as interiors.
[0091]
In the second embodiment as well, as in the first embodiment, coloring, drying, polishing with fine sanding paper, and painting may be omitted.
[0092]
FIG. 4 is a cross-sectional view showing a third embodiment of the present invention. As shown in FIG. 4, the surface of the wood-like molded product 10 is provided with a wood grain pattern composed of a plurality of grooves 11 having the same depth and different widths.
Hereinafter, a method for applying a wood grain pattern composed of a plurality of grooves 11 having the same depth and different widths will be described.
[0093]
As in the first embodiment, the rotating roller provided in the polishing apparatus is rotated, and the rotating roller is moved in the longitudinal direction of the wood-like molded product 10 to form a sanding paper having narrow projections in a wood-like manner. Press against the surface of the article 10 and rub it. Thereafter, the surface of the wood-like molded product 10 is further rubbed with a sanding paper having a wide protrusion.
[0094]
Then, the surface of the wood-like molded product 10 is cut into a groove shape by the protrusions, whereby a large number of groove portions 11 having the same depth and different widths can be formed on the surface.
The order in which these sanding papers are used is not limited to this.
Further, the width of the groove 11 may be three or more. In this case, a plurality of types of sanding paper having different widths of protrusions are used.
[0095]
Moreover, as a method of forming the groove portion 11, for example, a method of pressing and rubbing a sanding paper provided with a narrow protrusion and a wide protrusion on the surface of the wood-like molded product 10 in the same manner as described above. is there.
[0096]
In addition, after rubbing once as described above, sanding paper having protrusions of other types may be used for polishing again, and the number of times of polishing may be set as appropriate.
Then, the surface of the wood-like molded product 10 is cut into a groove shape by the protrusions, whereby a large number of groove portions 11 having the same depth and different widths can be formed on the surface at one time.
[0097]
After the above steps are finished, the surface of the wood-like molded product 10 is colored, dried, polished with a sanding paper having a fine mesh, and painted as in the first embodiment. Since these steps are the same as described above, they are omitted.
[0098]
As described above, the surface of the wood-like molded product 10 is formed with the groove portions 11 having the same depth and different widths. The wide groove portion 11 has a wide colored portion, and the narrow groove portion 11 has a colored portion. Appears narrowly and the entire surface has gradation. In addition, gloss and gloss can be achieved, making it closer to the texture of natural wood. Such a wood-like molded product 10 can be used for interior products such as interiors.
[0099]
In the third embodiment as well, similarly to the first embodiment, coloring, drying, polishing with fine sanding paper, and coating may be omitted.
[0100]
FIG. 5 is a cross-sectional view showing a fourth embodiment of the present invention. As shown in FIG. 5, the surface of the wood-like molded product 12 has a wood grain pattern composed of a plurality of groove portions 13 having the same width and different depths and a plurality of groove portions 14 having the same depth and different widths. It has been subjected.
Hereinafter, a method of applying a wood grain pattern constituted by a plurality of groove portions 13 having the same width and different depths and the groove portions 14 having the same depth and different widths will be described.
[0101]
Similar to the first embodiment, the rotating roller provided in the polishing apparatus is rotated, and the rotating roller is moved in the longitudinal direction of the wood-like molded product 12, and the sanding paper having a low protrusion is used as the wood-like molded product 12. Press against the surface and rub. Thereafter, the surface of the woody molded article 12 is further rubbed with a sanding paper having a high protrusion, a sanding paper having a narrow protrusion, and a sanding paper having a wide protrusion.
[0102]
Then, the surface of the wood-like molded product 12 is cut into a groove shape by the protrusions, whereby a large number of groove portions 13 having the same width and different depths and the groove portions 14 having the same depth and different widths are formed. It can be formed on the surface.
The order in which these sanding papers are used is not limited to this.
Furthermore, the depths and widths of the grooves 13 and 14 may be three or more, and in this case, a plurality of types of groove forming tools having different heights and widths of the protrusions are used.
[0103]
In addition, as a method of forming the groove portions 13 and 14, for example, a sanding paper having a protrusion having the same width and different height and a protrusion having the same height and different width together is used as the wood-like molded article 12. There is a method of pressing and rubbing the same surface as above.
[0104]
Further, after rubbing once as described above, another type of sanding paper may be used for polishing again, and the number of times of polishing may be set appropriately.
Then, the surface of the wood-like molded product 12 is cut into a groove shape by the protrusions, whereby the groove portion 13 having the same width and different depth and the groove portion 14 having the same depth and different width are once formed. A large number of surfaces can be formed.
[0105]
After the above steps are completed, the surface of the wood-like molded article 12 is colored, dried, polished with a sanding paper having a fine mesh, and painted as in the first embodiment. Since these steps are the same as described above, they are omitted.
[0106]
Thus, the groove 13 having the same width and different depth and the groove 14 having the same depth and different width are formed on the surface of the wood-like molded product 12, and the deep groove 13 has a deep color. The shallow groove portion 13 shows a light color, the wide groove portion 14 has a wide colored portion, the narrow groove portion 14 has a narrow colored portion, and gradation is formed on the entire surface. In addition, gloss and gloss can be achieved, making it closer to the texture of natural wood. Such a wood-like molded product 12 can be used for interior products such as interiors.
[0107]
In the fourth embodiment as well, as in the first embodiment, coloring, drying, polishing with fine sanding paper, and painting may be omitted.
[0108]
In addition, as a method of forming the plurality of groove portions in the first to fourth embodiments of the present invention, for example, a method of rubbing with a sanding plate or a method by embossing can be cited in addition to a method of rubbing with sanding paper. In this case, an embossing apparatus in which a large number of protrusions having appropriate heights and widths for forming the respective groove portions are provided on the peripheral surface of the embossing roller is used.
[0109]
Further, the end face of the wood-like molded article 1.8.1.12 is provided with an opening cavity, but for example, a wood-like molded article without an opening cavity provided on the end face may be used. For example, any shape such as a plate shape, a column shape, or a cylindrical shape may be used.
[0120]
【The invention's effect】
According to the invention of the present application, when forming a plurality of groove portions having different depths and widths on the surface of the wood-like molded product, a groove forming tool having a plurality of protrusions having different heights and widths is provided. Since it is rubbed against the surface, a large number of the groove portions can be formed on the surface at a time, which facilitates manufacture.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part of a wood-like molded product and a polishing apparatus for illustrating a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a polishing process for a wood-like molded product for illustrating the first embodiment of the present invention.
FIG. 3 is a cross-sectional view of a wood-like molded product for illustrating a second embodiment of the present invention.
FIG. 4 is a cross-sectional view of a wood-like molded product for illustrating a third embodiment of the present invention.
FIG. 5 is a cross-sectional view of a wood-like molded product for illustrating a fourth embodiment of the present invention.
[Explanation of symbols]
1, 8, 10, 12 Wood-like molded product 2 Groove portion 6 having different depth and width 6 Protrusion 9 having both height and width different Groove portion 11 having equal width and different depth 11 Groove portion 13 having equal depth and different width Grooves 14 having the same width and different depths Grooves having the same depth and different widths

Claims (1)

  A surface treatment method for a wood-like molded product formed by mixing and melting cellulose-based fine particles and a resin, and forming a plurality of grooves having different depths and widths on the surface of the wood-like molded product In the case of a groove forming tool including a sanding paper having a plurality of protrusions having different heights and widths, and a rotating roller around which the sanding paper is wound, the sanding paper is made to be woody by rotating the rotating roller. A method for surface treatment of a wood-like molded product, characterized by pressing and rubbing the surface of the molded product.

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