JPS5923521B2 - Manufacturing method of wood decorative board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a wooden decorative board having a straight-grain pattern, and more specifically, by slicing in the thickness direction a laminate made of two types of veneers individually dyed in two shades of light and dark. This article relates to a method for manufacturing wood decorative boards in which the summer wood and spring wood parts expressed in shading are arranged in a straight-grained pattern. An object of the present invention is to provide a method for manufacturing a wood decorative board that can realize intermediate tones of light and shade appearing in transition areas.

Conventionally, the method of obtaining a wood board with a straight grain pattern by slicing a stack of multiple veneers in the thickness direction involves two types of veneers: veneers dyed entirely in a dark color, and veneers dyed entirely in a light color. The thick part of the dark colored veneer represents the summer wood and the thick part of the light colored veneer represents the spring wood, or the whole is dyed in a light color and the surface is printed in a dark color. A commonly used method is to laminate veneers and use light colored areas to represent spring wood and darker colored areas to represent summer wood. The distinction between the wood part A and the summer wood part B becomes clear, and not only is it impossible to create the light and shade transition area that appears in the transition part from the spring wood part to the summer wood part like in natural wood, but the color becomes lighter. The dye is strongly adsorbed on the surface layer of the dyed veneer, forming a dark layer, so in order to make the width of the spring wood part larger like natural wood, the veneer dyed in a light color is continuous. When stacked together, there is a problem that a line C that looks like a crow's mouth appears in the spring wood part A, resulting in a straight-grained pattern that is different from natural. In the latter case, the dark color gradually penetrates from the surface layer to the inner layer, forming a transition area between spring wood A and summer wood B, as shown in Figure 2. However, there was a problem in that it was not possible to make the summer wood part B wide, and it was not possible to create a straight grain pattern similar to that of natural wood.

The present invention has been made in view of the above points, and will be described in detail below.

A rotary veneer such as agathis wood is used as the veneer, and a veneer 1 for summer wood is formed by dyeing the veneer in a dark color almost uniformly after decolorizing it with hydrogen peroxide; A plurality of veneers for spring wood 2 obtained by dyeing the veneer after decolorization treatment in a light color almost uniformly and printing the surface in a good color are used. The veneer boards 2 are sandwiched and stacked, and the laminated boards after being laminated and compressed are sliced in the thickness direction to obtain a wood decorative board.

As shown in Fig. 3, on the surface of the wood decorative board thus obtained, there are approximately two veneers 1 for summer wood dyed in a dark color and veneer veneer 2 for spring wood dyed in a light color. A summer wood part B represented by a summer wood veneer 1 and a spring wood part A represented by a spring wood veneer 2 are arranged in parallel.
As a result of printing the surface of the veneer 20 for spring wood in a dark color, the dark color penetrates from the surface into the interior and gradually shifts to a lighter color, creating a transition area between summer wood. It appears at the boundary with part B, and can give the appearance of a gradual shift in shading from spring wood part A to summer wood part B, as seen in natural wood.

In addition, when both sides of the veneer 20 for spring wood are printed and a plurality of veneers 2 for spring wood are successively overlapped as shown in the same figure, the total thickness of the veneer 20 for spring wood is Spring material part A formed by the width of
Multiple growth layers are displayed within the wood, and a non-growth layer E surrounded by a transition area between light and shade appears at the boundary between each growth layer, resulting in a straight-grained pattern that more closely resembles natural wood. .

Specific examples of the present invention will be described below. Example 1 Agatis veneer with a thickness of about 1 column obtained with 0-tally lace was treated with 3% hydrogen peroxide and sodium silicate (Na20.3
SiO2) 0.2%, magnesium sulfate MgSO40,
The bath ratio is 30.03 with the aqueous solution. Decolorization treatment was performed at a temperature of 60°C for 4 hours to unify the color tone, and Suminol Mil
ling Brown 3G (A289) 0.2%
, Lanyl Brown 7R (A295) 0.
Summer material color dye consisting of an aqueous solution of Section 05, and Sumino
lMilling Brown 3G (A289)
0.12%.

Lanyl Brown 7R (A295) 0.0
6 q6, surfactant (Sumihon WB) 0.1% aqueous solution of spring wood color dye was applied to each veneer individually at a bath ratio of 30.
The veneer for summer wood and the veneer for spring wood were dyed by boiling for 4 hours, and one surface of the veneer for spring wood was coated with SuminolMil.
ling Brown 3G 2%, Lany
Browno, 5%, sodium alginate 0.5% aqueous solution prepared with a viscosity of 100 cps, with a coating amount of 40! P/? ? After applying the coating under the conditions of Z2, the veneer for summer wood and the veneer for spring wood which have been printed are alternately stacked and bonded with polyurethane adhesive, and the resulting laminate is laminated and compressed. A wood decorative board having a straight-grain pattern on the surface was obtained by slicing it in the horizontal direction.

Example 2 Sum of a veneer rotary cut from agathis material to a thickness of 1%
inol Milling Brown 3G:C01
A veneer for spring wood is formed by boiling dyeing with a 0.015% aqueous solution of Ac1d Brown 13 to form a veneer for spring wood. I MillingB
row 3G:C01, Ac1d Brown1
A veneer for spring wood is formed by boiling dyeing with a summer wood color dye consisting of a 0.1 water solution of 3, and the moisture content of the veneer for spring wood is 200 to 3.
00%, use a roll coater to partially apply summer wood color dye solution (C0I, Acid Brown) to one or both sides of the veneer.
13 2% aq, 7# Sodium Ginate 0.3%
The veneer for spring wood and the veneer for summer wood thus obtained are then combined and laminated in a desired pattern, and then printed with polyurethane resin. The laminate was bonded and compressed to form a laminate, and this laminate was sliced in the thickness direction to obtain a wood decorative board with a straight-grain pattern appearing on the surface.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a wood decorative board obtained in a conventional example;
FIG. 2 is a partial perspective view showing a wood decorative board obtained by another conventional example, and FIG. 3 is a partially enlarged perspective view showing a wood decorative board obtained by an embodiment of the present invention. Wood veneer, 2
1 is a veneer for spring wood, A is a spring wood part, B is a summer wood part, and D is a shade transition part.

Claims (1)

[Claims] 1 Dye the entire veneer in a dark color to form a veneer for summer wood,
The entire veneer is dyed in a light color to form a spring wood veneer, and the surface of the spring wood veneer is printed in a dark color that is the same color as the summer wood veneer, and the spring wood veneer and spring wood veneer are printed. A laminate is formed by stacking a plurality of spring wood veneers and summer wood veneers with the summer wood veneer sandwiched between them, and then the laminate is sliced in the thickness direction. A method for producing a wood decorative board characterized by the following.