JPS6132708A - Method of coloring wood 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 invention relates to a method for coloring wood veneers.

[Background technology]

Due to the recent depletion of wood resources, high-grade precious woods are becoming scarcer, their prices are rising, and their uses are becoming increasingly limited.

Therefore, in order to effectively utilize wood resources, many improvements have been made to improve the quality of various types of low-grade water. Among these, the development of IB technology for wood veneers is underway in order to improve and utilize the color tone of comparable wood.

There are two main ways to color wood veneer. 1
One is a dye dyeing method and the other is a chemical coloring method.

With the dye dyeing method, it is possible to freely dye relatively bright colors, but the brightness impairs the natural look, and there are problems with weather resistance, and depending on the type of dye, the color may fade significantly. In addition, with chemical coloring, the color is created by a reaction between the components in the wood and chemicals, so while it has better weather resistance than dye dyeing, it is difficult to color freely and the colors are relatively colorful. There was a problem that it could not be colored.

[Purpose of the invention]

The purpose of this invention is to be able to freely color with natural colors,
Another object of the present invention is to provide a method for coloring a wood veneer with good weather resistance.

[Disclosure of the invention]

The method for coloring a wood veneer according to the present invention is characterized in that the wood veneer is colored P by using a combination of chemical coloring through chemical treatment and dyeing with a dye.

That is, when coloring a wood veneer, this coloring method is characterized by (I) chemically coloring it in a dyeing process and then dyeing it with a dye, or (de) dyeing it with a dye and then chemically coloring it. It is something.

Examples of chemical coloring methods include wood iron acetate, ferrous sulfate,
Various colored veneers can be obtained by dipping a wood veneer in an aqueous solution of salts such as potassium ferric chloride 9 dichromate and potassium permanganate. In addition, chemical coloring can be carried out by gas phase treatment such as ammonia smoking.

The type and concentration of chemicals used, treatment temperature, and treatment time are not particularly limited, and may be changed as appropriate depending on the purpose. In addition, as a dye staining method,
For example, direct dyes and acid dyes.

Various colored veneers can be obtained by immersing a wood veneer in an aqueous solution of metal complex dye or the like, or by applying it to the veneer. Dye N class, m combination, blend #concentration. Dyeing temperature. The dyeing time etc. can be changed depending on the desired color and is not immediately limited.

Note that when combining the chemical color method and dye layer color determination, precipitation may occur during the dipping treatment, so it is necessary to select a combination that does not cause precipitation.

Example Next, the present invention will be explained in detail by giving examples.

Example 1: One thick rotary cut veneer of white lauan.
It was immersed in a 5% potassium dichromate solution at room temperature for 24 hours to obtain a brown-yellow colored veneer. Next, it was immersed in an aqueous solution (98 to 100°C) of Numinor Milling Brown SR (manufactured by Sumitomo Chemical Co., Ltd.) for 3 hours to obtain a brown colored veneer.

The colored veneer thus obtained had a subdued, natural color and exhibited better light resistance in a 48-hour fade-o-meter light test compared to those treated alone.

Example 2: A 1-thickness A-tally cut single 1f of IUS was immersed in a 0.2-inch aqueous solution of Sumia Acrylic Red N-RL (manufactured by Sumitomo Chemical Co., Ltd.) at 98 to 100°C for 2 hours to form a red R. I got a turtle veneer. Next, the veneer was immersed in a ferrous sulfate solution for 24 hours at room temperature to obtain a brown-yellow colored veneer.

The resulting two-color medium plate had a natural feel and exhibited better light resistance in a 48-hour light test using a 7-day meter than those treated alone.

〔Effect of the invention〕

According to this invention, there is an effect that a wood veneer can be freely colored blue with excellent light resistance and a natural-looking color.

Claims (1)

[Claims] A method for coloring a wood veneer, characterized by coloring the wood veneer using a combination of chemical coloring through chemical treatment and dyeing.