JPS6067106A - Manufacture of decorative veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] This defense relates to a method for manufacturing a decorative veneer used as a cosmetic for interior wing materials.

[Background technology]

Artificial decorative veneer is used as a veneer for decorative boards.

This artificial decorative veneer is usually made as follows. That is, the veneers obtained by rotary slicing are degreased, bleached, and then dyed, the obtained dyed veneers are laminated with an adhesive, pressure molded to obtain a 7-piece assembly, and this is sliced. This is obtained by In order to strengthen the veneer, sheet-like materials and the like are still added to the dyed veneer in the process of manufacturing decorative veneers. Composite veneers can be dyed to the inside up to a thickness of about 1 m, but dyeing becomes difficult if the thickness becomes thicker than this. Therefore, in such cases, a pre-colored sheet material is usually used. However, since the coloring processes for the veneer and the sheet-like object are separate, there are problems in that the process is complicated, and color differences tend to occur between the dyed veneer and the sheet-like object.

[Purpose of the invention]

This invention was made in view of these circumstances, and it eliminates the coloring process, eliminates troubles such as color difference between the dyed veneer and the sheet material, and creates a decorative veneer with a rich natural feel. The purpose of the present invention is to provide a method for manufacturing a decorative veneer that enables the production of decorative veneers.

[Disclosure of the Invention] The inventor has made extensive studies to achieve the above object. As a result, this invention was completed.

This invention is a method for obtaining a decorative veneer by dyeing a wood veneer, laminating it in layers, and slicing the resulting laminated flitch. The gist is a method for producing a decorative veneer, which is characterized by pasting a composite veneer to form a composite veneer in advance, and then dyeing the composite veneer.

That is, this invention solves problems such as color differences between the veneer and the sheet-like material by forming a composite veneer from a wood veneer and a sheet-like material and dyeing it when manufacturing a decorative veneer. At the same time, the coloring process is omitted.

Specifically, the raw materials are wood veneers obtained by rotaryne processing of logs, or laminated sliced wood veneers obtained by slicing flitches obtained by laminating and laminating these veneers. First, the board is degreased according to the normal process.

After decolorizing, the sheet-like material is attached to the wood veneer to form a composite veneer. Sheet-like materials include paper, non-woven fabric9
Fiber sheets such as knitted fabrics, wood veneers, etc. are preferably used. By appropriately selecting the material, density, etc. of these notebook-like materials, it is possible to control the amount of dye applied during the subsequent dyeing process. Modified vinyl acetate resin and urea resin are used as adhesives for pasting sheet-like objects.

Water-resistant materials such as melamine resin, phenol resin, and urethane resin are preferably used.

The obtained composite veneer is dyed by a printing method, a dipping method, or the like. The dye is an acid dye.

Direct dyes are used, and water, dimethyl sulfoxide, and glycols are used as heating media.

In addition, carboxymethyl cellulose or the like can also be used as a thickener.

After dye impregnation, the composite veneer is cured by heating (including steaming) and dried. Next, this is laminated and the resulting flitch is sliced to obtain an artificial decorative veneer.

Note that sheets of paper, non-woven fabric, etc. that are combined with the wood veneer have been impregnated with substances that promote dyeing, such as resins, glues, acids, etc., and those that have not yet been impregnated with substances that promote dyeing, such as salts and alkalis. If a material containing a substance that suppresses dyeing is used, color unevenness due to differences in the amount of dyeing can be created in the sheet-like material.

1 to 4 are explanatory diagrams showing an example of the method for manufacturing a decorative veneer according to the present invention, in which a side sectional view of the first veneer is shown, and FIG. 3 is a dye solution applied to a composite veneer. As shown in Figure 1, this sheet-like material causes color unevenness. Part 2 that requires
(in this example, the opposite part) contains a substance that promotes dyeing. Depending on the arrangement of the portions 2, desired patterns, patterns, etc. can be drawn arbitrarily. Next, as shown in FIG. 2, a sheet-like material 1 is superimposed on the wood veneer 3 via an adhesive 4, and this is adhered by pressing or the like to form a composite veneer 5. Further, as shown in FIG. 3, after coating the dye 6 on the composite veneer 5, curing is performed by steaming or the like to obtain a dyed composite veneer 7 as shown in FIG.

In the composite veneer 7, dyeing is promoted in the portion 2 that contains a substance that promotes dyeing, and the color is darker than in other portions. The above is an example of a sheet material containing a substance that promotes dyeing, but is not limited to this. Composite veneers that suppress dyeing are laminated and pressed, and sliced Then, a decorative veneer is obtained.

The thus obtained decorative veneer can be arbitrarily given a nine-color pattern or the like by varying the partial dyeing within the sheet-like product, and has a natural appearance. On the other hand, the sheet-like material containing the dyed amount Ml substance can be stored after drying, making production planning and inventory management easier.
.

Composite veneers obtained by pasting paper, nonwoven fabric, etc. are dyed.
There is no bitterness when the jit regulating substance is included, and there is a difference in the amount of dyeing between the sheet material and the wood veneer, making it possible to express transitions in the wood grain. Composite reinforcement makes it less likely to crack or chip when handled. Since it is a composite veneer and is C-dyed, there is no difference in color tone between the sheet-like material and the irrigation veneer. It also has the effect of making it unnecessary to color the sheet material.

fJ5 to 7 are explanatory diagrams showing another example of the method for manufacturing a decorative veneer according to the present invention, in which FIG. 5 is a side cross-sectional view of a composite veneer, and FIG. FIG. 7 is a side cross-sectional view showing a state in which a dye solution has been applied to a composite veneer, and FIG. 7 is a plan view of the decorative veneer. As shown in Figure 5, composite veneer 8#'i
For example, a wood veneer of a different tree species or thickness is attached to a Ius wood veneer 9 with a thickness of about 0.8 mm using an adhesive 4, for example,
Agatis wood veneers 1o with a thickness of about 0.3 mm are stacked together as sheet-like materials and then adhered by pressing or the like. Using this composite veneer 8, as shown in FIG. 6, after applying dye 6 to the agathis wood veneer 10 side,
Curing is performed by steaming or the like to obtain a dyed composite veneer 11. After dyeing, the composite veneer is dried as usual, and the resulting composite veneer is laminated and pressed and sliced to obtain a decorative veneer 12 as shown in FIG. As shown in FIG. 11, the decorative veneer 12 has the Agatis wood veneer 10 as a dark colored part and the Aius wood veneer 9 as a light colored perforated part. By dyeing one side of the composite veneer in this way, it becomes possible to skillfully express transition areas.

Note that the wood veneer serving as the sheet-like material to be adhered to the wood veneer can be arbitrarily selected from various types of wood, thickness, etc. Although FIG. 7 describes the case where the adhesive is attached to one side, the attachment is not limited to this, and the adhesive may be attached to both sides. Alternatively, a plurality of sheets may be laminated and then attached to a wood veneer.

[Effect of the Invention J This invention provides a method for dyeing wood veneers and slicing the laminated frituna obtained by laminating them to obtain decorative veneers. Since the composite veneer is made into a composite veneer in advance and then dyed, the sheet material and the wood veneer only have to be colored once, which is conventionally done side by side, and the coloring process is omitted. can. Additionally, since the sheet material and the wood veneer are dyed at the same time with the same dye, there are no problems such as color differences, and the only difference between the two is the shade of the same color, so there is no sense of incongruity. Moreover, since the wood veneer is reinforced by combining it with a sheet-like material, it is easier to handle and less likely to tear or crack than the conventional dyeing of only the wood veneer.

When dyeing wood veneer using the textile printing method, if the dyeing solution is electrostatically applied using a Nublay nozzle with the following electrodes,
It is possible to reduce the variation in the amount of coating, and to achieve even dyeing efficiently with a small amount of dyeing liquid.

Specifically, a wood veneer obtained by rotary lining or slicing raw wood is electrostatically coated with dye by methods 1 and 2 as shown in Figures 8 and 9, for example. I will do it.

That is, in the case of method (2), as shown in FIG. 8, two pairs of belt conveyors 21 move in the directions of arrows A and A'.
a, '2 lb are used, and 22 appropriate intervals are provided between them for spray dyeing. At the upper part of the belt conveyors 21a, 21b corresponding to the drive rolls 23a, 23b, there is an iron feed roll 24a that rotates in the direction of arrow B.

24b are provided respectively. Feed roll 24a
, 24 b ij:, moving the wood RA board 25 in the direction of the arrow Y while holding it between the belt conveyors 21a and 211+ 24b and the spray nozzle 26 provided above the middle thereof, the 1 source 27 It is designed to be charged by In other words, the feed rolls 24a, 24b and the spray nozzle 26 are configured to be oppositely charged electrodes.

With this configuration, when the feed rolls 24a, 24b and the spray nozzle 26 are given opposite positive and negative charges, the dyeing solution 28 sprayed from the spray nozzle 26 is uniformly scattered onto the moving veneer 25 due to the attraction trap of positive and negative charges. This is what happens. In other words, electrostatic coating similar to electrostatic equipment is realized.

Next, in the case of method H, as shown in the i$9 diagram, arrow C
Iron feed rolls 29a, 29b that rotate in the direction *
The veneer 25 is adapted to move on the 29c in the direction of the arrow Y'. The feed roll 29b and the spray nozzle 26 provided above it are charged by a power source 27.

With this configuration, the feed roll 29tz! When the spray nozzle 26 is given positive and negative, opposite charges, the dyeing solution 28 sprayed from the spray nozzle 26 is evenly distributed onto the moving veneer 25 as in method (2) due to the attraction K of the positive and negative charges. It will start to scatter.

In this way, the electrostatic coating of Method I and Method (2) results in a uniform coating amount. Since wasteful scattering is prevented, the amount of dye scattering is reduced by about 50 times, and efficient leveling can be achieved with a small amount of dyeing solution, resulting in cost reduction.

[Brief explanation of drawings]

Figures 1 to 4 are explanatory diagrams of an example of the method for manufacturing a decorative veneer according to the present invention, in which Figure 1 is a perspective view of a sheet-like product, and Figure 2 is a perspective view of a composite veneer. 3 is a side sectional view showing a composite veneer coated with a dye solution, and FIG. 4 is a side sectional view showing a dyed composite veneer. 5 to 7 are explanatory diagrams illustrating another example of the method for manufacturing a decorative veneer according to the present invention, in which FIG. 5 is a side sectional view of a composite veneer, and FIG. 6 is a side sectional view of a composite veneer. A side cross-sectional view showing the state in which the dye solution has been applied to the board, and Figure 7 is a plan view of the decorative veneer. FIGS. 8 and 9 are explanatory diagrams illustrating electrostatic coating of dye. 1... Sheet-like material 2... - Part where it is necessary to produce uneven color 3,9.10... Wood veneer 4.
・・Adhesive 5,7.8.11・・Composite veneer 6・・
・Dye 12...Decorative veneer agent Patent attorney Matsumoto
TakehikoFigure 1Figure 2Figure 3Figure 5Figure 6

Claims (6)

[Claims] (1) A gum for obtaining decorative veneers by laminating and laminating wood veneers after dyeing them and slicing the resulting laminated 7 strands. A method for producing a decorative veneer, which is characterized by pasting the composite veneer to form a composite veneer in advance, and dyeing the composite veneer. (2) The method for manufacturing a decorative veneer according to claim 1, wherein the sheet-like material is paper. (3) Claim 1 in which the sheet-like material is a nonwoven fabric
Manufacturing method of decorative veneer as described in section. (4) The method for producing a decorative veneer according to any one of claims 1 to 3, wherein the sheet-like material contains a substance that promotes dyeing. (5) W method for decorative veneer according to any one of Claims 1]Jt to 3JJi, wherein the sheet-like material contains a substance that suppresses dyeing; (6) The method for producing a decorative veneer according to claim 1, wherein the sheet-like material is a wood veneer of a different species and/or thickness from the wood veneer to which it is attached.