JPS6138002B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing artificially decorated veneers.

As with conventional methods, rotary veneers and sliced veneers are simply dyed, assembled with an adhesive layer, pressed with a template to form uneven fritches, and then sliced to obtain artificial decorative veneers. In this case, the surface will only form a monotonous artificial heather 1 as shown in Figure 1.
The problem was that it lacked fidelity and looked inferior to the natural wood board 2 shown in Figure 2. In addition, a method of mechanically roughening and assembling rotary veneers has been proposed, but since the work is done one by one, it is not efficient and the roughening process is monotonous. There were flaws.

Therefore, an object of the present invention is to provide a method for producing an artificial decorative veneer that can efficiently produce artificial decorative wood having a heather that is faithful to that of natural wood.

This invention will be explained based on FIGS. 3 and 4. In other words, the method for manufacturing artificially decorated veneers involves partially decomposing the cellulose on the surface of the veneers, stacking them in large numbers with an adhesive layer in between, and pressing and bonding them from above and below using pole plates to form fritches. This process is characterized by slicing the fritches. For example, as shown in FIG. 3, after the cellulose on the surface of the raw material veneer 3 is decomposed and dissolved by treatment with this copper/ammonia solution, etc. The surface is made brittle by neutralization with acid, and then dyed in a color pattern similar to that of natural precious wood to produce veneers with dark autumn wood parts and light color spring wood parts, and these raw material veneers are used as appropriate. 3 are laminated and assembled using an adhesive 4, and bent and pressed using a mold plate to form a fritch 5 in order to make the wood grain appear.
This is sliced in the direction of arrow A to obtain artificial decorative veneer 6.

According to this method, the raw material veneer 3 is softened by treatment with a copper/ammonia solution, etc., so dyeability is improved, dyeing time is significantly shortened, and
Cellulose decomposes depending on the density of the woody part,
When melted, the surface becomes rough as shown in Figure 4, creating uneven areas, and the dark colored area 7 also becomes unevenly thick. When this is assembled and sliced, it becomes an artificially decorated veneer with a precious wood look that is faithful to natural wood. 6.

In addition, in this invention, it is not necessarily necessary to dye|stain. In other words, if no staining is performed,
The adhesive (dark colored part) becomes autumn wood, but since the surface of the cellulose-decomposed veneer is uneven, this autumn wood also has a complicated wave pattern, making it possible to obtain an artificial decorative veneer that looks like a precious wood. be.

Example 1 A 1250 g/m ² copper/ammonia solution was sprayed at room temperature for 40 seconds on the surface of a 1 mm thick rotary veneer made of agathis material. Next, it was washed with a 0.1N aqueous hydrochloric acid solution, and then thoroughly washed with water. This rotary veneer was then dyed, washed, and laminated to create artificial wood. The artificial decorative veneer obtained by slicing this is the second
It had an appearance that was faithful to natural wood with the same heather as shown in the figure. In addition, this dyeing process, which conventionally required 8 hours, was dyed to the same extent in 3 hours, and the wood was dyed to the same extent.
Due to the residual Cu ⁺⁺ ions, the discoloration resistance (ΔE) was significantly improved from 7 to 4.

The staining conditions for this example were as follows.

Dye: Suminol Milling Brown 3G...0.5%
Mixing temperature of 0.1% and Ranil Brown 7R: 95±2°C Example 2 0.6mm thick sliced zielton material,
1000 pieces of veneer with a width of 700mm and a length of 2500mm were heated to 40℃ using copper.
Immerse in ammonia solution for 20 seconds, then 0.01N
This was neutralized with hydrochloric acid, washed with water, dyed under the same conditions as in Example 1, washed with water, laminated, and sliced to make an artificially decorated veneer, which had an appearance faithful to natural wood. In addition, what conventionally took 4 hours to dye was dyed to the same extent in 1 hour, and the fading resistance (ΔE) was significantly improved from 7 to 5.

[Brief explanation of the drawing]

Figure 1 is a surface view of decorative veneer made by the conventional method.
Fig. 2 is a surface view of a board made of natural wood, Fig. 3 is a process explanatory diagram showing an example of the method for manufacturing artificially decorated veneers of the present invention, and Fig. 4 is a cross-sectional view of the raw material veneer during the process. . 3... Raw material veneer, 4... Adhesive, 5... Fritsch.

Claims (1)

[Claims] 1. After partially decomposing the cellulose on the surface of the veneer, a large number of veneers are stacked with an adhesive layer interposed between them, and a mold is pressed and bonded from above and below to form a frit. A method for producing artificially decorated veneer, which comprises slicing. 2. The method for producing an artificial decorative veneer according to claim 1, wherein the decomposition treatment is performed using a copper/ammonia solution.