JPH08309712A - Method for processing building wood - Google Patents

Abstract

PURPOSE: To improve beauty of the appearance of a wood by a method wherein degreasing processing of the wood is performed by immersing the wood in a sodium carbonate water soln. and boiling the soln. at a high temp. and the wood is dried and the wood is furthermore immersed in a dye soln. and is sucked and pressurized. CONSTITUTION: Woods such as pine trees are cut into sheets each with a thickness of at most 2cm and they are placed in a cooker filled with 1.5-3% sodium carbonate water soln. (pref. 2-2.5% water soln.) and the soln. is boiled at 100 deg.C for 5hr. Then, they are taken out of the cooker and are dried up to the deep inner part with hot air. Then, the woods 1 are placed into a tightly closed processing room 4 connected to a vacuum pump 2 and a pressure pump 3 and after the processing room 4 is sucked by means of a vacuum pump 2, a dye soln. is fed into the processing room 4 from a tank 5. Successively, open air is transferred under pressure by means of a pressure pump 3 to elevate the air pressure in the processing room 4. It is possible thereby to penetrate the dye soln. into the deep inner part of the woods 1 and to dye them to a required color. The material is softened thereby and the processability is improved as the woods with much resin content is degreased. In addition, feeling of beauty as a building material can be kept without floating of the resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment method for chemically treating wood such as softwood to improve its properties suitable as a building material.

[0002]

2. Description of the Related Art Generally, conifers have been mainly used as building timber together with hardwoods.

[0003]

However, since the softwood contains a larger amount of resin than the hardwood, and the pine-based softwood has a particularly large amount of resin, a resin will appear on the surface even after processing and the appearance will be good. Sometimes lost. Further, when the resin content is large, it is hard and difficult to process, and there is a problem that deformation is likely to occur after processing.

[0004]

Means for Solving the Problems The present invention is intended to solve the above problems. The wood is soaked in an aqueous solution of sodium carbonate and subjected to high-temperature boiling for degreasing treatment, and then the wood is dried. The wood is dyed by immersing the wood in a dyeing solution and applying pressure and pressure.

[0005]

[Function] The degreasing process makes it easy to process wood, and produces a wood with less tar and deformation. It also stains the inner deep part, so even if it is processed or scratched, the cutting surface and scratches will not occur. You can do it inconspicuously.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Cut wood such as pine into a plate with a thickness of 2 cm or less, put it in a pot filled with 1.5 to 3% sodium carbonate aqueous solution (preferably 2 to 2.5% aqueous solution), and heat. 1
Boil at 00 ° C for about 5 hours. By this boiling, the resin component of the wood is melted and discharged, and the wood fiber becomes soft. Then remove it from the kettle and apply hot air at 90 ° C for 48 hours.
By applying for a time, it is completely dried to the inner deep part.
This process is shown in FIG.

Then, as shown in FIG. 2, the wood 1 is put into a closed processing chamber 4 in which a vacuum pump 2 and a pressure pump 3 are connected, and the processing chamber 4 is decompressed by the vacuum pump 2. After that, the dyeing solution is supplied from the tank 5 to the processing chamber 4, and subsequently, the outside air is pressure-fed by the pressurizing pump 3 to raise the atmospheric pressure in the processing chamber 4. As a result, the dye liquor can be permeated to the inner deep portion of the wood 1 to be dyed in a desired color.

[0008]

As described above, according to the present invention, by degreasing wood containing a large amount of resin, the material is softened and the workability is improved. And the aesthetics as a building material can be maintained without the tars rising. In addition, by dyeing deep inside, you can keep the color even after cutting, you can reduce the cost without finishing painting, and even if the surface has scratches, the color tone does not change and the scratches can be made inconspicuous . For this reason, it is extremely convenient as a building material that constitutes flooring, skirts, furring strips, etc.

[Brief description of drawings]

FIG. 1 is a process diagram of a method for treating architectural wood according to the present invention.

FIG. 2 is a schematic view of a dyeing device.

[Explanation of symbols]

 1 Wood 2 Vacuum pump 3 Pressurizing pump 4 Processing chamber 5 Tank

Claims (1)

[Claims] 1. A wood is immersed in an aqueous solution of sodium carbonate and subjected to a degreasing treatment by boiling at a high temperature, then the wood is dried, and the wood is further immersed in a dyeing solution to dye and depressurize / pressurize the wood. A method of treating wood for construction, characterized by.