JPH03211005A - Processing of timber - Google Patents

Abstract

PURPOSE:To increase fireproof properties and durability and upgrade woody taste feeling by dissolving or dispersing a coloring material such as a dyestuff and a pigment into an inorganic ion solution in which timbers are immersed. CONSTITUTION:Inorganic ion solution is prepared by dissolving an inorganic compound such as barium chloride or boric acid into a solvent such as water solution, in which a coloring agent such as dyestuff or a pigment is dissolved or dispersed to prepare processing liquid. The dyestuff can be anyone of acidic, direct or basic dye, while water-dispersion type is preferred as the pigment. A timber is immersed in said processing liquid. In that case, the processing liquid is heated and the timber is formed into a veneer and immersed in the water of saturated state. Then, the timber is immersed into the inorganic ion solution excluding the coloring agent for several hours and taken out, washed with water and dried to manufacture colored, inorganic processed veneer. The same can be immersed into the inorganic ion solution containing the coloring agent, or can be immersed in the inorganic ion solution excluding the coloring agent first and then immersed in the organic ion solution containing the coloring agent.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for treating wood to make it non-combustible.

[Prior art]

Wood has a natural beautiful grain and warmth, and is an excellent interior building material with a unique woody feel depending on the tree species, but wood is prone to burning, rotting, etc., and is subject to fire prevention regulations under the Building Standards Act. There is a problem that it cannot be used in wet or humid places. For this reason, progress is being made in the development of inorganic-treated wood technology in which various inorganic ions permeate and diffuse into wood to generate insoluble inorganic salts within the wood structure.

[Problem to be solved by the invention]

Conventionally, when insoluble inorganic salts are allowed to form within the wood structure, there has been a problem in that the color tone becomes darker depending on the inorganic compound being treated, and the wood taste is slightly reduced. The present invention has been made in view of the above circumstances, and its purpose is to provide a method for treating wood that makes it non-combustible and prevents rot, while also improving the wood taste. .

[Means for Solving the Problems 1] The present invention is a method for treating wood in which inorganic ions are permeated and diffused into the wood to generate insoluble inorganic salts within the wood tissue. It is characterized by dissolving or dispersing the colorant, and this structure solves the above problems. [Action 1: Utilizing the difference in permeability of the wood structure, the colorant can penetrate at the same time as inorganic ions, increasing the density distribution of the colorant and emphasizing the wood taste. Also, the adsorption of the colorant to the wood. It also prevents the color tone from becoming darker due to fixation. The present invention will be explained in detail below. An inorganic ion solution is prepared by dissolving an inorganic compound such as barium chloride or boric acid in a solvent such as an aqueous solution. A treatment liquid is prepared by dissolving or dispersing a colorant such as a dye or pigment in this inorganic ion solution. The dye may be acidic, direct, or basic. The pigment is preferably water-dispersible. Wood is immersed in an inorganic ion solution containing this colorant. In this case, the inorganic ion solution is heated and the wood is veneered and soaked in water to saturate it. Next, the veneer is immersed in an inorganic ion solution containing no colorant for several hours, taken out, washed with water, and dried to produce a colored inorganic treated veneer. It should be noted that wood may only be immersed in an inorganic ion solution containing a colorant, or it may be first immersed in an inorganic ion solution that does not contain a colorant, and then immersed in an inorganic ion solution that contains a colorant. may be done. Next, examples of the present invention will be specifically described. (Example 1) Barium chloride 200g/l and boric acid 100g/1. Add acid dye ([Sminol Milling Brown] to the aqueous solution of
(trade name), manufactured by Sumima Kagaku Co., Ltd.) and an inorganic ion solution containing 5 g/l of a coloring agent was prepared. Next, after heating this inorganic ion solution to 80 ° C., a white oak veneer with a thickness of 1 mm that had been saturated with water was immersed.
After being left for 6 hours, it was taken out. This a, si mirin ammonium 250g/l and boric acid 150g//! The veneer was immersed in an inorganic ion solution at 80°C for 10 hours, taken out, washed with water, and dried to produce a colored inorganic treated veneer. This colored oak veneer clearly emphasized the wood grain and had an excellent wood taste. Moreover, the fire resistance and decay resistance were also the same as those without coloring. (Example 2)
, 51 thick birch veneer was immersed at 80° C. for 4 hours and then taken out. Next, 200g/(and 1% boric acid) of monobasic sodium phosphate
Add 10 g/l of acid dye (“Sminol Milling Brown” (trade name), manufactured by Juju Kagaku Co., Ltd.) to 50 g/l treatment solution.
The veneer was immersed in an inorganic ion solution prepared by adding 100 ml of chlorine at 80° C. for 12 hours, taken out, washed with water, and dried to produce a colored inorganic-treated veneer. Like the oak veneer, this colored birch veneer also had clear wood grains, an excellent woody feel, and was also excellent in fire resistance and decay resistance. Effects of the Invention The present invention is a method for treating wood in which inorganic ions are permeated and diffused into the wood to generate insoluble inorganic salts within the wood structure. It is possible to improve fire protection and decay resistance by generating insoluble inorganic salts within the wood structure, and also to make use of the difference in permeability of the wood structure. By penetrating the wood, it is possible to increase the density distribution of the colorant and emphasize the woody feel, and it also prevents the color tone from becoming darker due to adsorption and fixation of the colorant to the wood.

Claims (1)

[Claims] (1) In a wood treatment method in which inorganic ions are permeated and diffused into the wood to generate insoluble inorganic salts within the wood structure, coloring agents such as dyes and pigments are dissolved or dispersed in the inorganic ion solution in which the wood is immersed. Characteristic wood processing method.