JP2002046111A - Method for finishing surface of building material, and building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for finishing a surface wherein a luster is applied to a surface of a wood building material by a simple method. SOLUTION: A surface of the wood building material impregnated with resin is finished by at least >=2 polishing processes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for finishing a surface of a wooden building material used for a housing interior material and the like, and more particularly to a method for finishing a surface of a wooden building material impregnated with a resin.

[0002]

2. Description of the Related Art Conventionally, as a method of finishing the surface of a wooden building material to a glossy surface, resin coating such as ultraviolet curing resin coating (UV resin coating) and electron beam curing resin coating (EB resin coating) is performed. That is common.

[0003] In the case of coating such as UV resin coating, EB resin coating or the like, another paint called a sanding sealer is applied to the surface of the building material for a base treatment and sanded so as to make the surface smooth. It may be manufactured through a process, a process of applying a paint such as a UV resin or an EB resin, and a process of curing the applied paint. Such a resin coating treatment not only aims at the glossy finish of the surface of the building material, but also has the purpose of improving the surface strength or improving the disadvantage of "rottening" peculiar to wood-based building materials. It was something to have.

However, in the steps after the step of applying a paint such as a UV resin or an EB resin, there is a drawback that the production cost is high because it is necessary to apply the paint in a clean room where there is little dust. 1 (the arrow indicates an optical path in the figure), the resin 2 is applied to the wooden base material 1 so that the entire surface is uniformly covered with the resin. There is also a disadvantage that the sight is reflected and the beauty is impaired.

On the other hand, for the purpose of improving the disadvantages of wood-based building materials, a method of impregnating a wood-based material with various resins has also been studied.
No. 33 (1988), "Aichi Prefectural Industrial Technology Center Report" No. 28 (1992), "Wood Industry" Vol. 4
9, No. 7, p. 333 (1994), Encyclopedia of Wood Utilization (Industry Research Committee) p. References such as 450 (1994) disclose various impregnation methods such as a decompression method, a pressurization method, a decompression and pressurization method, and an immersion method. However, since these documents mainly relate to the improvement of the physical properties of the wooden building material as described above, they do not disclose the technical contents for improving the design, such as the appearance and texture, as a housing interior building material. Absent.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a surface finishing method for applying gloss to the surface of a building material by a simple method.

[0007]

Means for Solving the Problems As a result of diligent studies conducted by the present inventors to solve the above-mentioned problems, the surface of a wood-based building material impregnated with a resin is conventionally polished by several polishing steps. It has been found that a building material having a deep gloss, texture, and the like can be obtained, and the present invention has been completed.

That is, the present invention provides a method for finishing a surface of a building material, characterized by finishing the surface of a wooden building material impregnated with a resin by at least two polishing steps.

The wood-based substrate used in the present invention includes:
For example, wood, wood veneer, sawn board, plywood, glulam, LV
L, particle board, fiber board and the like.

The wood species used for these wood-based substrates include, for example, cedar, hinoki, pine, sawara, hiba,
Domestic conifers represented by hemlocks, imported conifers represented by radiata pine, southern pine, beech pine, baitsuga, agathis, spruce of Canada, etc.
Japanese hardwood represented by beech, asada, maple, alder, kamba, camphor, alder, lauan,
Imported hardwood represented by walnut, ramin, rosewood, kokutan, rosewood, mahogany and the like can be mentioned.

Examples of the resin to be impregnated into the wood base include epoxy resin, polyester resin, phenol resin, urethane resin and the like, and may be vinyl monomers, acrylic monomers, or oligomers. Any resin, monomer, oligomer, or the like may be used as long as it penetrates a wooden base material.

The method of impregnating the wood-based material with these resins and the like may be a known and commonly used method such as vacuum impregnation, pressure impregnation, vacuum pressure impregnation, or normal pressure impregnation. What is necessary is just to select suitably according to the combination of the kind and the kind of resin etc. to be impregnated.

The wood-based building material impregnated with the resin thus obtained is subjected to surface finishing. It is very effective that the polishing step is at least two or more steps to obtain excellent surface gloss.

FIG. 2 is a schematic view showing a state in which the resin 2 is impregnated in the wooden base material 1. Originally, wooden base material 1
There are irregularities on the surface of, and furthermore, the resin 2 impregnated also forms a convex portion at a location protruding from the surface of the wooden base material,
By impregnating the resin, the unevenness of the surface of the wooden building material is further increased. It can be said that the first polishing step is not a step for increasing the gloss but a step for smoothing the uneven portion of the wooden building material to a certain extent. After the first polishing step, the surface of the wood-based building material impregnated with the resin has an increased smoothed surface as shown in FIG.

The process after the second polishing process is a process of finishing the surface of the wood-based building material impregnated with the resin, and as shown in FIG. That is, the surface of the impregnated resin is smoothed to a mirror surface state.

[0016] The present invention provides a surface finishing method corresponding to a combination of various wood-based base materials and a resin to be impregnated through such polishing steps as the first step, the second step, and the second and subsequent steps. Becomes possible.

If surface treatment is performed in the fine polishing step from the beginning,
Abrasive powder such as a wooden base material or an impregnated resin, or abrasive powder of the abrasive itself is buried in the surface irregularities of the wooden building material as shown in FIG. Since it is difficult to obtain a glossy surface, as at least two polishing steps, the first step is a rough polishing step, the second step is a fine polishing step finer than the first step, and the third step is It is very effective from the point of surface finishing that a step of sequentially going from rough polishing to fine polishing, such as a fine polishing step which is finer than the second step, ---.

In the process of sequentially going from rough polishing to fine polishing, it is easy to obtain and handle, and even if there is a slight uneven surface on the surface of the building material as shown in FIG. It is preferable to use abrasive paper from the viewpoint that it can be polished along. As this abrasive paper, JIS R 6252 (1999) defined by the particle size of the abrasive is used.
And various water-resistant abrasive papers of JIS R 6253 (1999). Depending on the combination of the wood base material and the resin to be impregnated, these abrasive papers may be appropriately selected and used.
It is preferable to use abrasive paper of P400 to P1000. For example, as the polishing paper used in the first step of the rough polishing step, a polishing sheet of model number P400 is used, in the second step P800, and in the third step P10.
It is preferable to use fine abrasive paper in order, such as 00.

It is particularly preferable to perform buffing after sequentially performing surface finishing as described above in order to obtain excellent surface gloss.

As shown in FIG. 4, the resin-impregnated wood-based building material prepared through the above steps has a mirror-finished resin surface, and each resin surface is oriented in a uniform direction. It is finished as a diffuse reflection surface with slightly different reflection surfaces, so even when used as a building material for home interior, the surrounding scenery is not reflected, and it is a building material with a solid feeling, texture and high design quality .

[0021]

EXAMPLES The present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples.

Example 1 A 30 × 30 × 70 mm alder square was impregnated with a liquid epoxy resin (manufactured by Dainippon Ink and Chemicals, Inc.) by a vacuum impregnation method. This was treated at 130 ° C. for 3 hours to cure the resin, thereby obtaining a wood-based building material impregnated with an epoxy resin. The straight-grain face and the board-grain face of the wooden building material thus obtained are subjected to a high-speed sander S-80.
1 (manufactured by Ryobi Co., Ltd.) was polished with a P400 abrasive paper. Next, P800
And further polished with a P1000 polishing paper. This was buffed to obtain a wooden building material whose surface was finished.

When the obtained wooden building material was illuminated and its surface reflection state was observed, no irradiation light source image was observed.
It was confirmed that the surface was finished as a diffuse reflection surface as shown in FIG. In addition, when the external appearance was observed under natural light, it was possible to obtain a building material having a solid feeling while utilizing the original color tone of Alder.

[0024]

As described in detail above, the wooden building material according to the present invention is an unprecedented profound and high-quality building material, and therefore can be suitably used particularly as a building material for interior of a house. In addition, the gloss of the surface can be obtained by a simple method. For example, even when the surface of the product is damaged, it is possible to repair the surface by re-polishing the surface with abrasive paper or the like.

[Brief description of the drawings]

FIG. 1 is a schematic view of a conventional wooden building material having a surface coated with a resin.

FIG. 2 is a schematic view of a wooden building material impregnated with a resin.

FIG. 3 is a schematic view of a wooden building material after a rough polishing step according to the present invention.

FIG. 4 is a schematic view of a wooden building material after a fine polishing step according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 wood-based base material 2 resin 3 wood-based building material

Claims (4)

[Claims] 1. A method for finishing a surface of a wooden building material impregnated with a resin, the method comprising finishing the surface of the building material by at least two polishing steps. 2. The method for finishing a surface of a building material according to claim 1, wherein at least two or more polishing steps are sequentially performed from rough polishing to fine polishing. 3. The method according to claim 1, wherein at least two or more polishing steps are performed using abrasive paper. 4. A building material produced by the method for surface finishing a building material according to claim 1.