JPS6299109A - Manufacture of colored wood impregnated with synthetic resin - 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 a synthetic resin-impregnated colorant in WPC.

(Background technology) Conventional methods for coloring wood include chemical coloring, dyeing, and steam heat treatment, and methods for coloring wood impregnated with synthetic resin include dyeing the synthetic resin that is injected into the wood and impregnating it. A publicly known technique is to add a coloring agent such as a pigment, and then impregnate wood with the colored synthetic resin to color the wood.

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

■ Even if wood is colored by chemical coloring, dyeing, or steam heat treatment, the entire wood remains the same color, and it is impossible to darken just the pipes to achieve the desired natural look. It had

■ When the synthetic resin to be impregnated is colored and treated, there will be a difference in shade between the vessel and other parts, and synthetic resin-impregnated wood with a color similar to the desired color can be obtained.

However, when colored synthetic resins are used, the types of synthetic resins that can be colored are limited by the number of tanks that store the colored synthetic resins. Furthermore, when switching to another colored synthetic resin, there is a risk of color mixing unless the synthetic resin adhering to the inside of the vacuum cooker, piping, etc. is sufficiently removed. That is, there was a problem in that it hindered the production of a wide variety of products in small quantities.

(Purpose of the invention) To give wood a desired color as a whole by steaming, heating, and pressurizing the wood, and applying a coloring liquid.

This colored wood is impregnated with a synthetic resin using conventional vacuum and pressure methods, and semi-cured using hot air. Then,
A colored synthetic resin containing a coloring agent (dye, pigment, etc.) is applied to the surface of the wood and cured under heat and pressure.

In this way, the colored synthetic resin penetrates into the pipes of wood (particularly hardwood), and when pressure is applied, it is pushed into the pipes and hardens, making the pipes darker and highlighting the wood grain. It is an object of the present invention to easily obtain synthetic resin-impregnated colored wood.

(Disclosure of the Invention) The method for producing synthetic resin-impregnated colored wood of the present invention will be detailed below along with the steps.

As for the wood, logs such as hardwoods with large diameter pipes are processed into veneers using a rotary lace, a half rotary lace, a slicer, a saw, etc. The thickness of the veneer is approximately 0.2 to 10 R.

However, when used for surface decoration of general flooring materials, 0
．． Approximately 3 to 3a is preferable.

Next, the veneer is placed in a processing pot either as a raw material or after being dried, and steam is supplied into the processing pot to heat the veneer at 100 to 150°.
Heat and pressure treatment is performed at a temperature of C and a pressure of about 2 to 1 DEG for about 10 minutes to 3 hours.

Next, the veneer is colored by applying a coloring liquid or immersing the veneer in the coloring liquid.

After finishing the coloring treatment, the veneer is dried to a moisture content of 1.
Keep it below 0%. The dried veneer is subjected to reduced pressure,
The veneer is placed in a pressure cooker, and a synthetic resin such as unsaturated polyester or methyl methacrylate is injected into the veneer to impregnate it using conventionally known methods such as reduced pressure and pressurization. After the impregnation is completed, the synthetic resin adhering to the surface of the veneer is removed, and then the veneer is heated to a semi-cured state using hot air.

Next, the semi-cured veneer is placed on a plywood coated with an adhesive in advance, and adhered to the plywood by hot-pressing. After the molding is completed, a synthetic resin colored with a coloring agent (dye, pigment, etc.) is applied to the surface of the veneer using a flow coater, etc., and the colored synthetic resin is permeated into the vessel portion of the veneer and hardened by hot pressure molding.

Note that the synthetic resin applied to the surface is preferably the same as the synthetic resin used during impregnation, but of course A-Yuzu synthetic resin may also be used. In addition, the blending ratio of the synthetic resin should be the same as that used during impregnation, or it is better to use a synthetic resin with a slightly diluted (lower viscosity) blending ratio.
Harden the synthetic resin applied to the surface of the veneer.

Then, if necessary, the surface of the veneer can be polished, painted, etc. to make it look less like synthetic resin-impregnated colored wood. In addition, the colored synthetic resin is applied to the semi-cured veneer, and this veneer is placed on the plywood coated with adhesive.
It may also be hot-press molded.

Next, the method for manufacturing the synthetic resin-impregnated colored wood decorative board of the present invention will be explained in detail based on Examples.

Example 1) A rotary-processed hardwood oak veneer with a thickness of 1 mti and a moisture content of I% or more was sandwiched between spacers and placed in a steam treatment pot, and heated to 130 to 140°C by steam.
8 to 3.7 tfcrJ, heated and pressurized under additional conditions,
The veneer was colored. Further, apply a dyeing solution (Numinol Milling Brown 3G 2.0 parts by weight PFGMAI, 70 parts by weight of water) at a coating rate of 100 to 12 (1/m (on both sides)). A time dyeing treatment is performed. After the treatment is completed, drying is performed until the moisture content becomes 7% or less.

Next, the dried veneer was placed in a vacuum pot and evacuated under a reduced pressure of 10 torr or less for at least 1 hour, followed by adding 2 parts by weight of non-tms polyester/l/Zoo, 20 parts by weight of styrene monomer, and 2 parts by weight of BPO. The synthetic resin prepared by blending was poured into a vacuum pot, and after being left under reduced pressure for a few minutes, the pressure was returned to normal and the veneer was impregnated with the synthetic resin for over 5 hours. 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 120-130"C for 14 minutes to semi-cure the synthetic resin.

Next, place this veneer on plywood coated with adhesive,
140-150°C, surface pressure 10-11 under cap conditions 5
The base plywood and the veneer were integrated by hot-pressing for 1 minute.

Furthermore, colored synthetic resin (unsaturated polyester/l/100 parts by weight, styrene monomer 201
2 parts by weight of BPO, 2 parts by weight of Vicol Stain Brown) were applied in an amount of gloss to 60, and hot-press molding was performed under the same conditions as described above. Thereafter, the surface of the veneer is polished, painted, etc. to obtain a resin-impregnated colored wood-laminated decorative board.

Example 2) 0.5 M thick rotary veneer made of hardwood oak with a moisture content of ■%
Place it between spacers and place it in a steam treatment pot.
Steam (120-130°C, 2.0-2.8V
*The veneer was colored by heat and pressure treatment for 10 minutes. Furthermore, a staining solution (PM, Brown 10 parts by weight,
Suminol Milling Brown 3 G 1.5 f
lk parts, PffiCMA 25 parts by weight, water 75 parts by weight)
Apply to veneer 100-1209/lrt (on both sides). This is treated by a steam heating method for 2 hours.

Thereafter, as in Example 1), the veneer is dried, impregnated with resin and semi-cured, and the semi-cured veneer is attached to plywood. On the surface of this veneer, unsaturated polyester tv 100
Parts by weight, W parts of styrene monomer, 4 parts of BPO, Pollux Brown PM-3B R.

1.5 parts by weight of colored synthetic resin was applied in an amount of I to l3.
09/1 Coated with rlu Perth roll coater. In order to harden the synthetic resin in the next step, 140~150"C110~
11te/cJ (face pressure), hot pressure molding for 3 minutes.

Thereafter, the surface is polished, painted, etc. to obtain a synthetic resin-impregnated colored wood-laminated decorative board.

Example 3) A semi-cured veneer is obtained in the same manner as in Example υ. This veneer was coated with 100 parts by weight of unsaturated polyester y using a flow coater.
Styrene monomer weight part, BP02 weight 11B, pico-
μ Stain Brown Apply 3 parts by weight of colored synthetic resin to one side of the veneer. Immediately after application, place the veneer on the plywood coated with adhesive,
0" C110 to 11 V- (surface pressure) is hot-pressed for 5 minutes. Thereafter, the surface is polished, painted, etc. to obtain a synthetic resin-impregnated colored material-covered decorative board.

Example 4) Example 4) A veneer semi-cured in the same manner as in Example 1) is attached to a stand. On the surface of the veneer, apply 100 parts of methyl methacrylate, 8201 parts of methacrylate/l/acid methoxyμ monomer, and 2 parts by weight of Pico-μ Stain Brown in an amount of 60 to 7.
0 fd is applied, hot pressure molded, and the synthetic resin is cured. After that, the surface is polished, painted, etc., and the synthetic resin-impregnated colored wood-covered decorative board is produced.

Example 5) A veneer colored by heat and pressure treatment as in Example η was immersed in an aqueous solution of 65% Suminol Milling Brown 3G0 for dyeing.

The following is the same as in Example 2).

(Effects of the Invention) Since the present invention is constructed as described above, it is possible to apply the colored synthetic resin and harden it to emphasize the wood and wood grain areas where the color tone is different between the vessel area and other areas. colored wood impregnated with synthetic resin is easily obtained.

■ Simply change the colorant of the colored synthetic resin to be applied.
Synthetic resin-impregnated colored wood of various colors can be obtained.

■ Since no coloring agent is added to the impregnated synthetic resin, production is possible with a minimum number of synthetic resin storage tanks.

■ During semi-curing, the synthetic resin adhering to the surface of the veneer foams and hardens, creating unevenness, but by applying colored synthetic resin,
Because it is cured under heat and pressure, the surface of the veneer is smooth.

■ Since the veneer is colored, there will be little discomfort even if the veneer is damaged.

Claims (1)

[Claims] 1) Wood is colored by heating and pressurizing with steam, and then the wood is colored with a coloring liquid to further color the wood. After that, a synthetic resin is injected into the wood and cured, and then a colored synthetic resin is applied to the surface of the wood and cured, thereby highlighting the vessel portion in a dark color.Synthetic resin impregnation. How to make colored wood.