JPS62173206A - Manufacture of colored wood - 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) The present invention relates to a method for producing colored wood in WPC.

(Background technology) Wood? Conventional methods for coloring include chemical coloring, dyeing, and steam heat treatment, and methods for coloring wood impregnated with synthetic resin include dyes, pigments, and other colorants added to the synthetic resin that is injected into the wood. It is a known and publicly used technique to add a synthetic resin and then impregnate wood with this colored synthetic resin to color the wood.

However, all of the above methods have the following drawbacks.

■ Coloration: f, Even if wood is colored by coloring, dyeing, or steam heat treatment, the entire wood will have the same color tone, and it is impossible to darken just the pipes to give the desired natural look. When the synthetic resin to be impregnated is colored and treated, there is a difference in shading between the vessel pipe and other parts, making it difficult to obtain colored synthetic resin gold impregnated material that is close to the desired color. However, when coloring is performed using a colored synthetic resin, the types of resin that can be colored are limited by the number of tanks that store the colored synthetic resin. Furthermore, when switching to another colored resin, there is a risk that the color will fade unless the resin is sufficiently removed, as it may adhere to the inside of the vacuum cooker, the inside of the piping, etc. In other words, there was a problem in that production of a wide variety of products on two lots would be hindered.

(Purpose of the invention) ■ To give the entire wood a desired color by heating and pressurizing the wood with steam and applying a coloring liquid.

Next, the colored wood is injected and impregnated with a synthetic resin using conventional vacuum/pressure methods, and is semi-cured using hot air. Next, apply colorant, remove excess colorant,
Apply clear synthetic resin, pressurize, and heat cure. In this way, 1fl'f of wood (especially wide 91i!M)
You can easily create a skewer with synthetic resin-impregnated colored wood that has a dark color and emphasizes the wood grain.

■ Do not color the wood, leave the wood color as it is (uncolored mat),
Synthetic resin is injected and impregnated using conventional depressurization and pressurization methods, and semi-cured using hot air.

Next, a coloring agent is applied, and after removing the excess coloring agent, a clear synthetic JfM11rtt- is applied, and the resin is heated and cured under pressure.

In this way, it is easy to look down on colored wood impregnated with synthetic resin, where the vessel part of the wood (mostly hardwood) becomes dark colored and the grain part is emphasized.

(Disclosure of the Invention) The details of the manufacturing method of the present invention will be described below along with the steps.

As a wood, the diameter of the vessel is large. Hardwood log rotary lace, half rotary lace, slicer,
Process it into a veneer using a saw. The thickness of the veneer is 0.2
~10M. However, when used for surface decoration of general flooring materials, it is preferably about 0.3 to 311.

Next, this veneer is put into a processing pot either as a raw material or after drying, and steam is supplied into the processing pot, and the veneer is heated at 110°C.
Heat and pressure treatment is performed at ~160''G and a pressure of approximately 1.5 to 6.0 kV'CIA for approximately 10 minutes to 3 hours.

Next, the veneer is colored by applying a coloring liquid or by immersing the veneer in the coloring liquid. Next, after the coloring process is completed, the colored veneer is dried so that the moisture content of the veneer becomes 10% or less. The dried veneer is placed in a vacuum/pressure cooker, and the vacuum/pressure method, which is a conventionally known method, is used.
Synthetic resins such as unsaturated polyester μ and methacrylic acid/l/l are injected into the veneer and impregnated. After the impregnation is completed, the synthetic resin adhering to the surface of the veneer is removed, and then heated with hot air to semi-cure the veneer.

Next, the semi-cured veneer is placed on the plywood to which adhesive has been applied in advance, and is adhered to the base plywood by hot-pressing. After forming, a coloring agent (dye, pigment, etc.) is further applied to the surface of the veneer, dried, and excess coloring agent (on areas other than the vessel) is removed with @Waka, Puffashing, etc.

Further, a colorless synthetic resin (preferably the same synthetic resin as that used for impregnation, but a different type of synthetic resin may be used) is applied to the surface of the veneer and cured under heat and pressure. The blending ratio of the synthetic resin is preferably the same as that for impregnation, or a slightly diluted (lower viscosity) synthetic resin may be used. During this heat-pressing process, the synthetic resin applied to the surface of the veneer is cured.

Then, if necessary, finishing such as surface polishing and painting of the veneer can be performed to obtain colored wood impregnated with a synthetic resin. The coloring agent may be applied to a semi-cured veneer, and this veneer may be placed on a base plate plywood coated with an adhesive and hot-press molded.

Alternatively, a hardwood veneer may be dried, injected with a synthetic resin and cured without being colored, and colored wood may be produced by following the steps described above.

Hereinafter, a detailed explanation will be given based on specific examples.

Example 1) Rotary-processed broad-leaved oak veneers of IJEI thickness with a moisture content of 50% or more were sandwiched between spacers and placed in a steam treatment pot, and were heated to 130 to 140"Q, 2 by steam.
．． The veneer was colored by heat and pressure treatment under conditions of 8 to 3.7 ψ-1 sword. In addition, staining solution (Sminol Milling
Brown 3G 2.0 heavy part, PFEGi'fA3Q heavy part, water 70 heavy part) in application amount Zoo ~ 120 fl/
d Apply (on both sides). This is done using the steam heating dyeing method.
Perform staining for 2 hours. After completion of the treatment, drying is carried out until the moisture content is 6% or less.

Next, this dried colored veneer was placed in a vacuum pot and evacuated for at least 1 hour at a pressure of 10 tom or less, and then adjusted with a blend of 100 parts by weight of unsaturated polyester, 20 parts by weight of styrene monomer, and 2 parts by weight of BP0. The resulting synthetic resin was poured into a vacuum pot and left in a vacuum for 11 tons, after which the pressure was returned to normal and the veneer was immersed in the synthetic resin for over 4 hours to impregnate it. The veneer was taken out of the pot, the synthetic resin adhering to the surface of the veneer was removed, and then placed in a hot air dryer at 120 to 130''C for a period of 6 minutes to semi-cure the synthetic resin.

Next, this veneer was placed on a plywood coated with adhesive, and the veneer was placed on a plywood sheet coated with adhesive and exposed to a nesting temperature of 140 to 150'' C1 surface pressure lO to 11 days.
The plywood and semi-hardened veneer were integrated by hot-pressing for minutes. On the surface of this veneer, add 51 parts of Volx Brown PM-3BR (manufactured by Sumika Kawo Co., Ltd.) and 10 parts of water.
A colored liquid prepared by blending 0 parts by weight was coated with a reverse roll coater at a coating amount of 0 to 6 oV, and dried. Thereafter, the surface of the veneer was polished to remove the colorant from areas other than the vessel portions of the veneer. Furthermore, the surface of the veneer was coated with a compound of the synthetic resin resin used for impregnating the C veneer described above.
Apply 6 coats at any coating λ, immediately hot-press mold to 140-150"Q, surface pressure 10-+1J with flexibility for 3 minutes, bond F& on the surface of the veneer, harden the resin, and apply a clear overcoat layer. After this, surface polishing, painting, and actual processing were performed to create architectural flooring products.

Example 1) Colored by heating and pressurizing in the same manner as in Example 1),
Further, the veneer is steamed and heated at 9C using a dyeing solution, and then the veneer is impregnated with synthetic resin and semi-cured.

The same coloring liquid as in Example 1) is applied to the surface of this semi-cured veneer using a reverse roll coater in a coating amount of 1 to ωV door. Next, on the base plywood coated with adhesive,
Place this veneer at 140~150''C1 surface pressure lO~uv-
The veneer is integrated into the base plate by heat-pressing for 5 minutes. After this, the surface of the veneer is polished to remove excess colorant from areas other than the vessel areas.

Furthermore, a synthetic resin similar to that used for injection impregnation was applied to the surface of the veneer at a coating amount of ω to ωV, and immediately 14
Heat-press molding is carried out at 0 to 150°C, 1 pressure and 10-11 seams for 3 minutes to harden the synthetic resin on the surface of the veneer and form a clear overcoat layer. The following is the same as in the example.

Example 3) As a veneer, rotary-processed oak with 0.5 city thickness,
A dried veneer with a moisture content of 10 to 15% is used.

Other nest construction and processes were the same as in Example 1).

Example 4) As a veneer, a rotary-processed oak veneer with a thickness of 0.511 and a moisture content of 5o% or more is used.

In addition to this, 130-140°C, 2.8-3.7kq/(
yl, the veneer was colored by steam heating and pressure treatment with flexibility between the parts.

As a staining solution, Suminol Milling Brown 3G
2 parts by weight, PM-Brown 10 parts by weight, PEGMA25
Use the product prepared in the heavy trench area and the water 75 layer area, and apply an amount of 7.
0 to 80V door (both sides are coated with a foam sponge roll coater, steam heated dyeing method is applied, and dyeing is carried out for 2 hours. After completion of the treatment, dry until the moisture content becomes 6% or less.

The following is the same as in Example 1).

Example 5) As a veneer, a rotary-processed oak veneer with a thickness of 1.0 mm and dried to a moisture content of io% or less is used.

This veneer was placed in a vacuum pot, and the same process as in Example υ was carried out.
☆Inject and impregnate the fingers and semi-cure the synthetic resin.

5υ contact with the base plate plywood, staining agent (Sminnow μ milling)
Bufu 73G, 5% water (1, liquid storage) and L30-70 Shio'rrf coating 4 on the surface of the veneer using a reverse roll coater.
5. Dry and remove by polishing with colorant from areas other than the vessel.

Furthermore, the synthetic resin used for injection/containing is applied to the surface of the veneer and cured under pressure. After that, it was polished and painted in the same manner as in Example 1 to obtain an architectural floor product.

(Effects of the Invention) Since the method for producing de-theta-colored wood of the present invention is constructed as described above, it has the following unique effects.

■ Since the coloring agent is embedded in the vessel, it is easy to obtain synthetic resin-impregnated colored wood that emphasizes the grain of the wood, which has a different color tone from the vessel.

■ By simply changing the coloring agent applied to the surface of the veneer, synthetic resin-impregnated colored wood can be obtained in a variety of colors.

■ Since a coloring agent is added to the synthetic resin to be impregnated, production is possible with a minimum number of synthetic resin storage tanks.

■ Because the synthetic resin is hardened and hardened, when semi-hardened,
The unevenness caused by foaming and hardening of the resin adhering to the surface of the veneer and the unevenness of the vessel portion are reduced.

Claims (2)

[Claims] (1) Wood is colored by heat and pressure treatment with steam, and then this wood is colored with a coloring liquid to further color it. Thereafter, a synthetic resin is injected into the wood and hardened, a coloring agent is applied to the surface of the wood, and excess coloring agent is removed. Furthermore, clear synthetic resin is applied to the wood surface.
A method for producing colored wood, characterized by curing it. (2) Inject synthetic resin into wood and let it harden. A coloring agent is applied to the wood surface and excess coloring agent is removed. The method for producing colored wood according to claim 1, further comprising applying and curing a clear synthetic resin on the surface of the wood.