JPS62116101A - Method of treating woody material - 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] (Industrial Application Field) The present invention is a method for treating wooden materials by storing them in a halogen gas atmosphere, and is characterized by emphasizing the wood grain of the wooden materials and performing preservative treatment. do.

(Prior technology) Traditionally, wood and decorative wood panels used in furniture and fittings are treated with various dyes and colorants, and chemical colorants such as iron sulfate, potassium peranganate, and ferric chloride are used. This emphasizes Kiguchi. Furthermore, as a physical method, unevenness was sealed on the wood surface to emphasize the edges of the wood.

On the other hand, with regard to wood itself, there is a need to improve the durability of wood building materials due to the increasing stock of high-quality housing. Particularly in the case of wooden houses, when wooden materials are used for foundations and other structural parts, it is strongly desired to prevent wood rot and ant damage due to moisture from below the floor and internal condensation within the walls.

For this reason, preservative wood that has been pressure-impregnated with preservatives and other chemicals, or preservative wood that has been coated with an oil-based chemical such as creosote oil, has been used.

However, the above tree [1 In emphasis and embalming treatment.

There was uneven penetration of dyes, colorants, chemicals, etc., and the effects were not sufficient and time was required for rework. Furthermore, the processing equipment itself has become large, causing problems such as increased cost.

(Problems to be Solved by the Invention) In order to solve the above-mentioned problems, the present invention stores and processes wood materials in a halogen gas atmosphere at room temperature and pressure. The present invention provides a treatment method that emphasizes the grain of the wood, sharpens it, and also applies preservative treatment.

(Structure of the Invention) In the treatment method of the present invention, first, various woods, sawn boards, and decorative veneers are used as wood materials.

Usually, this wood material is post-treated to a moisture content of approximately 5 to 15%.

On the other hand, chlorine gas is used as the halogen gas.

That is, a wooden material is stored in a sealed container, the air inside the container is replaced with chlorine gas at room temperature and under normal pressure to create a chlorine gas atmosphere, and the container is left open for about 1 to 12 hours. If the moisture content exceeds 15%, excess hydrochloric acid will remain in the wood.
Below this, the reactivity decreases and the treatment takes a long time.

The chlorine gas No. 7 varies depending on the size, shape, etc. of the wood material to be treated, but the range is 1 to I based on the weight of the wood material.
An amount of about 0% is desirable. In addition, when chlorine gas is to be penetrated into the interior of the wood material, it is also possible to carry out depressurization and deaeration treatment as a pretreatment, add chlorine gas to normal pressure, and perform gas phase treatment.

(Effects of the Invention) The adjustment of the present invention darkens the surface of the wood material and makes the wood grain area clearer. This is especially noticeable in the autumn wood of general wood. The effect is also noticeable on wood with unclear grains, such as Japanese pine and South Sea wood.

Furthermore, the treatment with chlorine gas suppresses the increase in moisture in the surface layer of the wood material, and the reaction with the chlorine gas increases the insect repellent and antiseptic effects.

In this way, wood grain enhancement is achieved through a gas phase reaction using chlorine gas, so compared to conventional methods, the wood is colored more uniformly and has no color unevenness, giving it a luxurious feel.

On the other hand, regarding the antiseptic property, the application method of creosote oil can sufficiently obtain the insect repellent property and lipophilic property of chlorine gas, and the creosote can sufficiently penetrate into the deep layer of the wood, resulting in a further improvement in the antiseptic property.

Example 1 Rice grain (thickness lhm, width 100mm, length 10.0 mm)
Set the moisture content of 01) to about 13% and keep it in a closed container. Then, the air in the sealed container was replaced with chlorine gas to create a chlorine gas atmosphere inside the container, and treatment was performed at a temperature of 20° C. for 12 hours.

The test method was to drop 0.05 drops of water onto the surface of the treated material and indicate the time it took for the water to disappear.

The obtained rice tsuka wood was colored brown as a whole, and the wood grain in the autumn wood part in particular was noticeably darkened. The water repellency on the surface of this rice tsuga wood lasts approximately 20 to 30 minutes, suggesting improved antiseptic performance.

Comparative Example 1 Rice vine wood having the same dimensions as in Example 1 was brought to a moisture content of 13%, and then allowed to stand in a closed container at a temperature of 20° C. for 311 minutes.

The resulting rice tsuga wood 1] pattern was not clear, water repellency took 1 to 2 minutes, and no improvement in antiseptic performance was observed.

Claims (3)

[Claims] (1) A method for processing wood materials, which comprises storing and processing wood materials in a halogen gas atmosphere in a container. (2) The method for treating wood materials according to claim 1, wherein the halogen gas is chlorine gas. (3) The method for treating a wood material according to claim 1, wherein the storage in the halogen gas atmosphere is carried out after the moisture content of the wood material is set to 5 to 15%.