JPS59165611A - Method of dyeing woody 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] The present invention relates to a dyeing method for uniformly coloring a wooden veneer in a desired color. The colored wood veneers are mainly laminated and pressed together to form an artificial flitch, and then the artificial flitch is cut to create an artificial decorative veneer with a wood grain pattern.

[Background technology]

Conventionally, when dyeing this type of wood veneer, the wood veneers obtained by rotary cutting or null cutting of raw wood are degreased, bleached, washed with hot water, etc. as necessary, and a large number of pieces are dyed with spacers. (1) Layer them together, place them in a dyeing basket, put the dyeing basket into a dyeing tank, 1, circulate the dye solution controlled at a constant concentration in the dyeing tank, and dye the wood veneer. Was.

Of course, it is also desirable to heat the staining solution to accelerate the staining.1. stomach. However, even within wood veneers of the same tree species, there are differences in rough density and impregnating properties of the dyeing solution, resulting in large variations in the degree of dyeing of the wood veneers depending on the area. It had

Of course, it is difficult to freely obtain the desired color of the artificial decorative veneer with a wood grain pattern, which is created by laminating, pressing, and cutting the wood veneers obtained in this way. Ta.

[Purpose of the invention]

The present invention relates to a method for uniformly dyeing wood veneers, and aims to contribute to the development of this industry by providing society with a method for dyeing wood veneers that can be extremely easily and uniformly dyed. It is something.

[Structure of the invention]

The present invention uses a dyeing solution (
A plurality of roll coaters +81 +8+ . . . are installed in parallel in a dyeing tank (2) containing 1). The gap between each roll coater (8) is set smaller than the thickness of the wooden veneer (4) to be dyed. Next, when the wooden veneers (4) are sequentially passed through the gaps of the roll coder (8), the wooden veneers (4) are first coated with the dyeing solution (1).
After containing the wood veneer (4), the wood veneer (4) is passed through a first roll coater (
The wood veneer (4) immediately after passing through the roll coder (8) after being squeezed by the dyeing solution (tl) t/'i contained therein and passing through the roll coder (8) rapidly expands in the dyeing solution (1). , staining solution (1
), and the next second roll coater (8)
The wood veneer (4) is introduced into a roller coater and squeezed, and the impregnated dyeing liquid (1) is removed again, and then the wood veneer (4) is transferred to a second roll coater.
The wooden veneer (4) that has passed through (8) rapidly expands in the dyeing solution (1) and absorbs a large amount of the dyeing solution (1). By repeating this process 8 to several times, wood veneer (
4) is dyed almost uniformly. i.e. roll coater
Each time it passes through (8), the void inside the wooden wainscot (4) is repeatedly compressed and swollen, and is filled with the dyeing liquid (1), and cannot be filled by simply immersing it in the dyeing liquid (1). The voids are also sufficiently dyed. Furthermore, each time the wooden veneer (4) passes through the roll coater (8), the entire wooden veneer (4) is impregnated with a large amount of the dyeing solution (1) due to its restoring force and swelling force. The method for dyeing wood veneer of the present invention involves passing through such steps.

In addition, the gap between the roll coater (8) and the wood veneer (4)
If the thickness of the wood veneer (4) is made extremely small, the wood veneer (4) will undergo a buckling phenomenon and will have almost no restoring force, resulting in poor dyeability. The most suitable gap between the roll coaters (8) is about 70% to 80% of the thickness of the wood veneer (4).

〔Effect of the invention〕

The method for dyeing wood veneers of the present invention is configured as described above, and the dyeing method of the present invention allows wood veneers to be dyed uniformly, and the dyeing time is shorter than that of conventional dyeing methods. b) It has the effect of reducing the dyeing percentage and the degree of staining as well.

[Brief explanation of the drawing]

The drawing is a schematic cross-sectional view of a main part showing the method of dyeing a wooden veneer according to the present invention. 1... Staining liquid, 2... Staining tank, 8... Low/L/
Coordination 1, 4...Wood veneer. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others)

Claims (1)

[Claims] 1) A method for producing wooden veneers characterized by installing a plurality of roll coaters in a dyeing tank containing a dye solution, and dyeing the wood veneers by passing the wood veneers sequentially through the plurality of roll coaters. Dyeing method.