JPH09123111A - Manufacture of decorative veneer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to improve the yield, to increase the specific gravity and to improve the strength and hardness of a timber by steaming the timber as a material in high-temperature steam at a desired temperature or higher, compressing it and once cooling it, then cutting and drying to obtain a thin veneer. SOLUTION: The method for manufacturing a decorative veneer comprises the steps of first boiling the straight grain material 1 of radiata pine having, for example, a thickness of 6cm, a width of 12cm and a length of 200cm with hot water of 90 deg.C for 24 hours, then raising the material temperature to 170 deg. or higher of in this case 180 deg.C of pressurized steam, pressing it under the pressure of, for example, 25kg.g/cm<2> in the state that both side surfaces are restricted by a pressurizing press in a pressurizing kiln to reduce the thickness by about 30%, then lowering the temperature and pressure in the kiln to the ambient temperature, then releasing the pressure of the press, then cutting it along the straight grain direction by a slicer to obtain a thin veneer having, for example, 1.0mm, and passing it through a hot roll dryer for drying the veneer to make it possible to obtain a decorative radiata pine straight grain veneer having, for example, water content of 8%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a decorative veneer widely used as a building material.

[0002]

2. Description of the Related Art Conventionally, as a method for manufacturing a decorative veneer, there is a method of cutting expensive wood called a famous tree into thin pieces with a saw, and a method of slicing into thin pieces with a slicer to obtain a veneer. It was Further, there is a method of directly obtaining a thin veneer from a log by using a rotary race or a half rotary race. However, recently, due to the soaring price of name tree and shortage of goods, there is also a method of coloring cheap wood, or artificially making name tree by combining veneers, slicing it again, or making thin veneer with lace. It has been taken out.

[0003]

However, when trying to obtain a high-quality decorative veneer from an expensive name tree, the yield is extremely low due to bending and eccentricity of the material due to lack of good material, and as a result, It had become an increasingly expensive veneer. On the other hand, if the material is soft, when it is made into a thin veneer, it absorbs paint and becomes transparent, and the color of the base material is transparent and unsightly, or the base is exposed even with slight scratches. In order to avoid this, a thick coating of the surface paint or a synthetic resin is injected into the material. Further, the soft material is easily affected by insects, molds, decay fungi, etc., and is difficult to use as a decorative veneer due to discoloration and insect damage.

The present invention has been made in view of the above circumstances. It is also possible to control the appearance of wood grain by adjusting the mold for compression and the compression pressure, and to correct the bend by compression. Therefore, the yield is also improved,
It is possible to increase the specific gravity and improve the strength and hardness. Furthermore, by pre-treating chemicals, antiseptic, mildew-proof, insect-proof,
It is an object of the present invention to provide a method for producing a decorative veneer that can provide fireproofing and dimensional stabilization effects and can be used in a wide range of applications.

[0005]

The method for producing a decorative veneer of the present invention uses wood as a material, and the material is cooked under a high temperature steam of 170 ° C. or higher, and after being compressed, it is cooled once, Then, it is a method for producing a decorative veneer, which is cut and dried to obtain a thin veneer.

Further, in the above method, wood which has been previously impregnated with one of the agents effective as a preservative, antifungal agent, insect repellent, fireproofing agent, dimensional stabilizer or a combination thereof is used. Is a method for manufacturing a decorative veneer made of.

The above method is also a method for producing a decorative veneer made of wood, which is previously impregnated and impregnated with a colorant.

[0008]

In the method for producing a decorative veneer having the above structure, the material is cooked under high temperature steam of 170 degrees Celsius or higher to soften the lignin which is a constituent of the wood and compress the wood when it is compressed. It is easy to collapse. After compression, once cooled, lignin and the like solidify again, and deformation and thickness return are eliminated.

[0009]

An embodiment of the present invention will be described with reference to the drawings. A decorative veneer was manufactured in the following order of A to G.

A) Thickness 6 cm, width 12 cm, length 20
Boil 0 cm radiata pine grain wood in hot water at 90 degrees Celsius for 24 hours. B) Raise the material temperature under pressurized steam of 180 degrees Celsius. C) Pressing at a pressure of 25 kilograms per square centimeter with both sides restrained in a pressure press installed in a pressure pot to reduce the thickness by 30 percent. D) Decrease the temperature and pressure in the pressure pot to bring it to room temperature. E) Relieve the pressure of the press. F) Cutting with a slicer along the grain direction, thickness 1.
0 mm thin veneer is obtained. G) Pass through a hot roll dryer for drying veneers to obtain a cosmetic radiata pine grain veneer with a water content of 8%.

The above is one embodiment of the method for manufacturing a decorative veneer. FIG. 1 shows a perspective view of the grained grain material (1) of the radiata pine at the stage A in the figure. Moreover, the dimension of the compressed wood (2) of the grain wood of radiata pine after the step E is as follows: thickness 4.2 cm, width 12.5 cm, length 200.5.
cm, and a perspective view is shown in FIG.

The steam temperature in the above step B is suitably 170 ° C. or higher, but if the temperature is lower than this, the lignin, which is a component of the wood, will not soften, so the wood will crush when compressed. Difficult to cause cracking and thickness return.

In the compression at the stage C, it is possible to adjust the mold and the compression pressure, control the appearance of the wood grain, and correct the bending. Therefore, a uniform product can be obtained.

After the step E, preferably, the wood temperature is raised to soften the wood and then sliced, whereby the skin can be sliced smoothly without rough skin.

In the above embodiment, the wood used is
It is possible to use one of the agents effective as a preservative, antifungal agent, insect repellent, fire proofing agent, dimensional stabilizer, or a combination thereof injecting and impregnating in advance. In this case, the produced decorative veneer has effects such as antiseptic, mildewproof, insecticidal, fireproof and dimensionally stable.

Examples of the preservatives, fungicides, insect repellents, fireproofing agents, and dimensional stabilizers used here include the following. That is, as the preservatives, Sankyo Co., Ltd., trade name, Sunplus, Sankyo Co., Ltd., trade name S-42
1. For the fungicide, the product name Xylazane AL manufactured by Takeda Pharmaceutical Co., Ltd., and for the insect repellent, the product name Sankyo Lambert Emulsion manufactured by Sankyo Co., Ltd. and the product name LICTUS L manufactured by Sankyo Co., Ltd.
1. In fire retardant, phosphorus-nitrogen flame retardant, boron flame retardant,
As the dimension stabilizer, polyethylene glycol resin, phenol resin and the like can be considered. However, it is not always necessary to limit these agents as long as they can penetrate wood.

In the above embodiment, the wood to be used may be used by being impregnated with a coloring agent in advance. In this case, the manufactured decorative veneer is beautifully colored and completed. As the colorant used here, an alcohol dye type is easy to use, but the colorant is not limited thereto.

[0018]

According to the present invention, the appearance of the grain can be controlled by adjusting the die for compression and the compression pressure. The compression can correct the bending of the wood and improve the yield, as well as increase the specific gravity of the wood and improve the strength and hardness. Clogging your eyes can reduce paint inhalation. In addition, the chemical treatment has effects such as antiseptic, antifungal, insecticidal, fireproof, and dimensional stability. Further, the compression brings about an extremely beneficial effect such as uniformization and prevention of surface cracks.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing wood before compression according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing wood after compression according to an embodiment of the present invention.

[Explanation of symbols]

 1 radiata pine grain wood 2 radiata pine grain wood compressed wood

Claims (3)

[Claims] 1. Wood is used as a material, and the material is cooked under high-temperature steam at 170 ° C. or higher and compressed, and then once.
A method for producing a decorative veneer, which comprises cooling, then cutting and drying to obtain a thin veneer. 2. A wood material which has been impregnated with one of the agents effective as a preservative, antifungal agent, insect repellent, fire retardant, dimensional stabilizer, or a combination thereof in advance. Item 1. A method for producing a decorative veneer according to Item 1. 3. The method for producing a decorative veneer according to claim 1, wherein wood made by previously impregnating and impregnating a colorant is used.