JPS597562B2 - Manufacturing method of artificial decorative veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing artificially decorated veneers.

In the method of obtaining artificial decorative veneers by slicing frits obtained by laminating and bonding and pressing material veneers, conventionally, in order to make the annual ring pattern of the obtained artificial decorative veneers stand out, the material veneers were Each veneer was dyed one by one so that the dyeing of each material veneer was uniform.

By applying this type of dyeing treatment, the annual rings that appear on the resulting artificially decorated veneer stand out, making it possible to create a product with an elegant appearance. Because the dyeing was uniform, it was not possible to reproduce the changes in color shading seen in the grain pattern of natural wood, and overall the reproduction of the wood texture of natural wood was insufficient.

To overcome these drawbacks of conventional methods, when dyeing veneers of material, instead of dyeing each veneer one by one as in the past, multiple veneers of material are overlapped and dyed at the same time. By doing this, a difference in dye density is created between the inner surface sandwiched by adjacent veneers of the material and the outer surface not sandwiched by other veneers, and these veneers of the material are combined and laminated and bonded and pressed. It is possible to create a wood grain pattern with continuous shading of color on the resulting artificially decorated veneer by slicing it.

When using this method, it can be effective in terms of reproducing the color shading of the grain pattern of natural wood, but in order to reproduce the shading, the material veneer must be dyed. It is necessary to provide a surface that is well dyed and a surface that is not well dyed, which has the disadvantage that the effect of highlighting annual rings is diminished compared to the conventional case.

Therefore, an object of the present invention is to provide a method for manufacturing artificially decorated veneer that has clear growth rings and can faithfully reproduce the color shade changes of the grain pattern of natural wood.

The outline of this invention will be explained below based on FIGS. 1 and 2.

That is, in this method of manufacturing artificial decorative veneer, a material veneer 1 such as a sliced veneer or a loch veneer obtained from natural wood,
As shown in Figure 1, two or three sheets are stacked one on top of the other, decolorized for one hour with an aqueous solution of hydrogen peroxide, sodium hypochlorite, etc., and then washed with hot water at 90 to 95°C for one hour. Perform the staining process.

The dyeing process is carried out by interposing a spacer between adjacent material veneers 1 to provide an appropriate distance between each material veneer 1 so that the dyeing solution is evenly distributed over the entire surface of each material veneer 1. do.

The dyed veneers 1 of each material are combined in an appropriate arrangement, laminated and bonded and pressed to form a fritchie, and the fritchie is further sliced to form an artificial decorative veneer 2 as shown in Fig. 2. get.

As a result, in the decolorization process of the material veneer 1, the inner surface of the stacked material veneers that is in contact with the adjacent material veneer is not sufficiently decolored, whereas the material veneer 1 is Sufficient bleaching treatment is carried out on the outer surface that does not come into contact with the surface, and a difference in dyeing density occurs between the bleached portion 1a and the unbleached portion 1b due to the subsequent dyeing treatment, resulting in an artificially decorated veneer 2 as shown in FIG. The difference in dyeing density appears in the wood grain pattern as a shade of color.

In addition, the color shading is not reproduced by the degree of dyeing as in the above-mentioned method, but the unbleached portion 1b becomes the tree rings, so the tree rings can be clearly expressed, and the overall effect is similar to that of natural wood. It can be made into an artificial decorative veneer that reproduces the texture of wood extremely faithfully.

As described above, the method for manufacturing artificially decorated veneer of this invention is as follows:
After stacking multiple veneers of the material and decolorizing them, the dye solution is uniformly permeated over the entire surface of each veneer of the material to create a difference in dye density between the bleached and unbleached areas, and then these Since the frits obtained by combining veneer materials, laminating, bonding, and pressing are sliced, it is possible to create a wood grain pattern with a rich natural feel that closely resembles natural wood. This has the effect that the tree rings themselves can be expressed extremely clearly.

Example 1: Two sheets of lamin material with a thickness of 0.8 mm and LO mm were stacked together and immersed in a 5% aqueous solution of hydrogen peroxide at room temperature for 2 hours, and then washed in hot water for 50 minutes to undergo decolorization treatment. .

The decolorized veneers were immersed in Ranil Brown 3R (2%) dyeing solution for 4 hours for dyeing and then dried.The veneers were assembled and laminated and bonded and pressed using a concave-convex press to remove concave-convex frizz. These were then sliced to obtain artificial decorative veneers having annual ring patterns on the surface.

The resulting artificially decorated veneer has a change in color shading from the spring wood to the fall wood grain that closely resembles that of natural wood, and the annual rings are also very clearly expressed, making it look just like natural wood. The texture was faithfully reproduced.

Example 2: Made of yellow lauan material, thickness LOmm, 1. 5m
Two veneers of m(7) material were stacked together and immersed in a 10% sodium hypochlorite aqueous solution at 30°C for 3 hours to undergo decolorization treatment.

This decolorized veneer is used as Lana First Brown 2GL (3
%) After being immersed in a dyeing solution for 4 hours and dyed, it is dried.
These veneers were combined to obtain an artificial decorative veneer in the same manner as in Example 1 above.

The obtained artificial decorative veneer faithfully reproduced the wood texture of natural wood as in Example 1.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the decolorization process for explaining the outline of the method for producing artificially decorated veneers of the present invention, and FIG. 2 is a plan view of the artificially decorated veneer obtained by the method for producing artificially decorated veneers of the present invention. It is a diagram. 1...Material veneer, 1a...Decolorizing part, 1
b...Unbleached area, 2...-...Artificial decorative veneer.

Claims (1)

[Claims] 1 After stacking multiple sheets of material veneer and decolorizing them,
The dye solution is uniformly permeated over the entire surface of each material veneer to create a difference in dye density between the bleached and unbleached areas, and then these material veneers are combined and laminated and bonded and pressed to obtain the resulting product. A method for producing an artificially decorated veneer, characterized by slicing a fritsch.