JPS646925B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing laminated wood such as decorative veneer.

Natural cedar and cypress wood veneers obtained by cutting raw wood such as natural cedar and cypress have extremely thin summer wood parts (grain).
is clearly visible. By the way, so far, natural-looking wood veneers and resin paper (base materials such as paper and cloth impregnated with resin liquid and dried) obtained by cutting inexpensive low-grade logs have been used in the following manner. Decorative veneers (artificial precious wood veneers) are manufactured. The first method is to soak the raw wood veneer in a dye solution, and take advantage of the permeability of the dye solution to dye the surface side of the veneer darkly to create a summer wood color layer, and to dye the inside lightly to create a spring color layer. In this method, a decorative veneer is manufactured by laminating and bonding a plurality of such dyed veneers to form a frittle layer, and then slicing the veneer. However, with this method, it was not possible to clearly express the extremely thin summerwood part. The second method is to dye raw wood veneers into spring wood colors and summer wood colors, and use these colors to manufacture decorative veneers. According to this method, although it is possible to clearly express the summer wood part, it is not possible to express it in an extremely thin state. The third method is to dye the raw wood veneer in the spring wood color and dye the resin paper in the summer wood color, and then stack and bond the resin paper with the summer wood color dyed sandwiched between the spring wood color dyed veneers. This method involves making fritchi and slicing it to produce decorative veneers. Similar to the second method, this method could clearly express the summer wood part, but it was not possible to express it very thinly.

As described above, none of the conventional methods has been able to clearly express extremely thin summerwood parts.

This invention was made in view of the above circumstances, and involves applying a film-forming agent having a summer wood color to at least one side of a thin sheet-like body having a spring wood color to form a summer wood color film. The gist of this method is to create a fritchi using a thin sheet material having a spring wood color on which a summer wood color film has been formed, and to obtain a wood decorative material by processing this fritchi. .

In other words, the thin summerwood color film formed on at least one side of the thin sheet-like body, which has a springwood color, is extremely thin and has a clear boundary with the sheet. The coating allows the extremely thin summerwood parts to be clearly expressed in the resulting wood decorative material. Then, a thin sheet-like material with the color of spring wood is placed on its surface in advance.
When a base coat is applied, the coloring agent penetrates into the surface of the sheet from the film-forming agent layer that has a spring wood color formed on top of it and colors it in a summer wood color. This prevents this from happening, making it possible to express even thinner summer wood parts more clearly.

Next, this invention will be explained in detail.

For example, this invention can be applied to natural cedar,
Manufactures decorative veneers made from Japanese cypress wood. That is,
A material veneer (consisting of raw wood veneer or bleached or dyed veneer of raw wood, etc.) that has the same color as the spring wood part of the targeted natural wood veneer is used as a thin sheet. A summer wood-colored film forming agent (film formation is quick) is applied (brushing, spraying, etc.) to the surface of the material veneer to form a summer wood-colored film. Examples of film-forming agents that have a summer wood color include synthetic resin emulsions, adhesives, pigments (dyes),
A mixture containing a thickener or the like is used. here,
Thickeners are used in film-forming agents to increase the viscosity of the film-forming agent and prevent pigments (dyes) from migrating to the material veneer. This is to ensure that the film formed on the material veneer firmly adheres to the surface of the material veneer. FIG. 1 shows a raw material veneer with a summerwood color film formed on its surface in this manner. In the figure, 1 is a material veneer, and 2 is a summer wood colored film. In this case, the boundary between the summer wood colored film 2 and the material veneer 1 is formed by the summer wood colored film due to the action of the thickener in the film forming agent as described above during the formation of the summer wood colored film 2. Material veneer 1 from membrane agent
Because the migration of pigments (dyes) to is almost prevented,
It's becoming clear. The film thickness of this summer wood color film 2 is usually from several microns to several + microns depending on the amount of application.
adjusted to. Next, a plurality of material veneers 1 on which the summer wood color film 2 is formed are stacked with adhesive applied so that the summer wood color film 2 is on the upper side, and the pressed surface is bent. A pair of templates is used to press the material to create a frit. This fritsch is the second
As shown in the figure. In the figure, 1 is a material veneer, and 2 is a summer wood colored film. Next, slice this frittuchi like the arrow. As a result, a decorative veneer 3 as shown in FIG. 3 is obtained. On the veneer surface of this decorative veneer 3, the above-mentioned material veneer 1 (Fig. 2) is placed in the spring material part 4.
The summerwood colored film 2 (FIG. 2) appears as the summerwood portion 5. This summer material part 5 is
Since it is composed of a summer wood-colored film 2 that is thin and has a clear boundary with the material veneer 1, it appears extremely thin and clearly.

In this way, decorative veneers with extremely thin summer wood parts clearly visible, like natural cedar and cypress veneers, can be obtained.

In addition, in the above explanation, a film-forming agent with summer wood color is applied directly to the surface of the material veneer, but before applying the film-forming agent, a base coat is applied to the surface of the material veneer. Alternatively, a base coating film may be formed.
When doing this, the film-forming agent is applied on top of the base coat, so the pigment (dye) in the film-forming agent is completely prevented from migrating to the material veneer. Become so. Therefore, the summer wood color area does not spread, and the boundary between the summer wood color film and the material veneer does not become blurred due to pigment (dye) migration. Moreover, since the unevenness on the surface of the material veneer is hidden by the formation of the base coating film, the summer wood color film is not formed in an uneven shape along the unevenness, but is formed in a relatively flat state. As a result of the above, the thinner summerwood portions are expressed more clearly and linearly (if the summerwood color film is formed in an uneven shape, the summerwood portions will appear in a meandering manner). Furthermore, when the base coating film is rich in gloss, the summer wood part appears to have gloss due to the gloss, and the resulting decorative veneer comes to have an even richer natural feel.

In addition, in the above explanation, a veneer of material is used as a thin sheet-like body, but resin paper may be used or both may be used together. A material made by laminating and bonding papers may also be used. Furthermore, in the above explanation, the fritchi is sliced, but the processing that can be applied to the fritchi is not limited to slicing, but includes finishing treatments such as sawing, planing, polishing, and sandpapering. The shape of the wood decorative material obtained thereby is not limited to the decorative veneer shape, but may also be plate-like or columnar.

As described above, this invention applies a film-forming agent having a summer wood color to at least one side of a thin sheet-like body having a spring wood color to form a summer wood color film. Since the laminated wood is produced using a thin sheet-like material on which a film is formed, it is possible to obtain a natural cedar-like or cypress-like wood decorative material in which extremely thin summer wood parts are clearly visible.

Next, examples will be described.

Example 1 A decolorized agathis veneer with a thickness of 1 mm was dyed in a spring wood color as follows.

(Dyeing) Dye (Sminol Milling Brown 3G,
(manufactured by Sumitomo Chemical)
...0.8% by weight (hereinafter abbreviated as "%") Dye (Lana First Yellow 2RL, manufactured by Mitsui Toatsu Co., Ltd.) ...0.015% Dye (Sumipon WB, manufactured by Sumitomo Chemical Co., Ltd.)
…0.1% Bath ratio…30-40 Dyeing temperature…95±2°C Dyeing time…4 hours Next, the surface of the springwood color-dyed veneer obtained as above was coated with the following composition: A wood-colored film forming agent was applied using a roll coater at a rate of 50±10 g/m ² and heated to form a summer wood-colored film.

(Film forming agent composition) Urea adhesive
...50 parts by weight (hereinafter abbreviated as "parts") Acrylic emulsion ...100 parts Filming aid ...5 Pigment dispersant ...5 Hardening agent ...5 Thickener ...15 Pigment ...4.5% of the total amount of the above items Next, apply adhesive to the spring wood color-dyed veneer with the summer wood color film formed on the surface, with the summer wood color film facing upward. A number of sheets were stacked and pressed together using a pair of mold plates with curved pressing surfaces to create a frit, and then sliced to obtain a decorative veneer. The obtained decorative veneer had very thin summer wood parts clearly visible on the surface of the veneer, and closely resembled natural cedar and cypress wood veneers.

Example 2 Prior to application of a summer wood colored film-forming agent, a base treatment agent having the following composition was applied to the surface of a spring wood colored veneer and heated to form a base coating film. A decorative veneer was obtained in the same manner as in Example 1 except for the above. In this decorative veneer, the summer wood part was thinner, clearer, and straighter than the decorative veneer obtained in Example 1.

(Surface treatment agent composition) Urea adhesive...50 parts Acrylic emulsion...100 Thickener...2〃

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of an example of the manufacturing method of the present invention, and FIG. 3 is a plan view of a decorative veneer obtained by the method. 1...Material veneer, 2...Summer wood color film, 3...Decorative veneer, 4...Spring wood section, 5...Summer wood section.

Claims (1)

[Scope of Claims] 1. A film-forming agent having a summer wood color is applied to at least one side of a thin sheet-like body having a spring wood color to form a summer wood color film, and this summer wood color film is A method for producing a decorative wood material, characterized in that a fritchi is made using a thin sheet-like body having a spring wood color, and a decorative wood material is obtained by processing the fritchi. 2. The method for producing a wood decorative material according to claim 1, wherein the thin sheet-like material having a spring wood color is coated with a base coating film in advance on its surface. 3 A thin sheet-like body colored in spring wood is made by laminating and bonding at least one of a wooden veneer colored in spring wood and a resin paper colored in spring wood, and a thin sheet material colored in spring wood. The decorative wood material according to claim 1 or 2, which is at least one thin sheet-like body selected from the group consisting of: a wooden veneer with a grain color; and a resin paper with a spring wood color. Manufacturing method. 4. A patent claim in which the fritsch is made by laminating and bonding a plurality of thin sheets of spring wood color on which summer wood color films are formed, with the summer wood color films facing the same direction. A method for producing a decorative wood material according to any one of Items 1 to 3. 5. The method for producing a wood decorative material according to any one of claims 1 to 4, wherein the film-forming agent that has a summer wood color contains a thickener. 6. The method for producing a decorative wood material according to any one of claims 1 to 5, wherein the film-forming agent having a summer wood color contains an adhesive. 7. The method for producing a decorative wood material according to any one of claims 1 to 6, wherein the fritching process is a slicing process.