JPS5850566B2 - 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.

Conventionally, the commonly used manufacturing method for artificially decorated veneers involves laminating, gluing, and pressing pre-dyed material veneers to obtain flitches, and then slicing the flitches. In order to reproduce the subtle color changes of natural wood on the surface of artificial decorative veneers, multiple types of dyeing baths are prepared for each material veneer in the dyeing process of the laminated material veneers mentioned above. They applied slightly different stains, or obtained each veneer from logs of different types of wood and dyed them under the same dyeing conditions to reproduce subtle color changes.

The surface of the artificially decorated veneer obtained in this way reproduces a wood grain pattern with annual ring lines at the laminated boundary surfaces of the veneers of each material, but the color changes due to the dyeing process are different from each other. It only occurred between the grain layers.

However, natural wood has subtle color changes not only between each grain layer but also within the same grain layer, and the above method does not allow for the natural feel unique to such natural wood. is impossible to reproduce.

In order to give subtle color changes within the same grain layer, similar to natural wood, in the dyeing process of the veneers, a patch plate is attached to a part of the surface of each veneer. By immersing the wood in a dyeing bath or in a decolorizing solution before dyeing, each material veneer is dyed unevenly, and the dyeing unevenness causes subtle color changes within the same wood grain layer. Although a method has already been developed, this method requires work such as attaching a caul plate to each veneer of material at the dyeing stage, making the dyeing process extremely complicated.

Therefore, an object of the present invention is to make the dyeing process extremely simple, and to make the wood grain pattern on the surface of the resulting artificial decorative veneer rich in natural appearance with subtle color changes that closely resemble natural wood. An object of the present invention is to provide a method for manufacturing an artificially decorated veneer.

An outline of this invention is shown in FIGS. 1 and 2.

That is, as shown in FIG. 1A, this artificial decorative veneer manufacturing method involves compressing multiple types of material pieces 1 of different types obtained by vertically splitting a log-shaped raw wood radially using an adhesive to form a log. After rotary slicing this laminated timber 2 as shown in Figure 1C, it is cut into appropriate dimensions to produce sliced veneer boards whose surfaces are divided by multiple materials as shown in the figure. 3
get.

As the different types of logs, logs with relatively similar colors but different specific gravity are used.

Next, the sliced veneer 3 whose material surfaces are divided by a plurality of materials is dyed, and the difference in specific gravity based on different types of materials is used to dye the sliced veneer 3.
It is made so that uneven dyeing occurs within one slice veneer 3.

That is, for example, a portion made of a material with a low specific gravity is dyed darkly, and a portion made of a material with a large specific gravity is dyed lightly, thereby expressing a subtle color change.

This sliced veneer 3 is laminated with an adhesive interposed, and the first
As shown in Figure E, the uneven deformed flitch 5 as shown in Figure F is obtained by pressing with the uneven deformation mold 4, and this deformed flitch 5 is sliced in the order shown in Figures G and H. An artificial decorative veneer 6 having uneven dyeing within each wood grain layer is obtained.

It should be noted that the plurality of types of material pieces 1 having different materials are the first
It is not limited to the radial vertical pieces as shown in Figure A, but can also be made of rectangular pieces 1' with uniform thickness as shown in Figure 2A, and these can be laminated and bonded to replace the log-shaped laminated timber 2. Second
A prismatic laminated timber 2' as shown in Figure B may be formed and sliced veneers may be obtained by slicing this.

Further, in the above description, the dyeing process is applied to the sliced veneer 3 obtained from the laminated wood 2 made by joining different materials, but the dyeing process is not limited to this order, and the uneven deformed flitch 5 can be sliced. It may be applied to a sliced veneer obtained by doing so.

As described above, the method for manufacturing artificially decorated veneer of this invention is as follows:
A process of combining logs of different types to form laminated wood,
slicing the laminated wood to obtain a sliced veneer;
Any one of the following steps: laminating and press-bonding the sliced veneers to obtain a flitch, slicing the flitch, slicing the laminated wood to obtain a sliced veneer, and slicing the flitch. Since this process includes a dyeing process that will be carried out later, each wood grain layer that appears on the surface of the resulting artificially decorated veneer is divided into multiple types of materials, and these different types of materials are dyed under the same dyeing conditions. Since subtle differences occur in the dye density, it is possible to reproduce subtle color changes that closely resemble natural wood within the same wood grain, making it possible to create artificially decorated veneers with a rich natural feel. Example 1 As shown in Figure 1A, Jelutong and Merapi material pieces made by vertically splitting logs in a radial manner were pressed. Crab 20 vertical maintenance time: 20 hrs.

Adhesive: Sumitac EA601 (manufactured by Sumitomo Chemical),
Pressure bonding was performed using a band-shaped pressing jig under conditions of a coating amount of 100 g/ca to obtain a log-shaped laminated wood as shown in FIG. 1B.

This laminated wood was sliced into LOmm thick pieces of 0.6m x 2.
Cut into 4m veneers, and cut these veneers into 3 pieces in units of 100 pieces.
The baskets were divided into three baskets a, b, and c and dyed under the following conditions.

Pigment Nisminol Milling Brown 3G (manufactured by Sumitomo Chemical Co., Ltd.) 0.05% 5% Ranil Bralanf (manufactured by Sumitomo Chemical Co., Ltd.) 0.01% Dyeing bath temperature: 95°C Dyeing time: Basket a-1hrs, Basket b-2hrs
,,Cage C-3hrs.

The dyed veneer was adjusted to a moisture content of 100% at 150±10° C. using a dryer, and then laminated and pressed together using a concave-convex mold under the following conditions to form a concavo-convex deformed flitch.

Adhesive: Sumitac EA601 (manufactured by Sumitomo Chemical Co., Ltd.), coating amount 1509/1 pressure = 10 time for clamping: 3 hrs.

Pressing temperature = 30° C. The unevenly deformed flitch thus obtained was sliced to obtain an artificial decorative veneer with a thickness of 0.3 mm.

The rosewood-like wood grain pattern reproduced on the surface of the resulting artificially decorated veneer showed subtle changes in shade within the same wood grain layer that closely resembled natural wood.

Example 2 As shown in Figure 2A, 0.15mX0.9mX2.4
Jelutong and agathis material pieces made into rectangular pieces of size 6 m x 0.9 m x 2゜4 m were alternately combined and pressure-bonded to form a prismatic laminated lumber measuring 6 m x 0.9 m x 2゜4 m as shown in Figure 2B. did.

This laminated wood was sliced into 0.7ixi thick pieces of 0.6 m.
The veneers were cut into veneers of 2.4 m x 2.4 m, and these veneers were divided into three baskets a', b', and c' in units of ioo sheets, and basket dyed under the following conditions.

Pigment Nisminol Milling Brown 3G (manufactured by Sumitomo Chemical Co., Ltd.) 0.05% Rana Fast Yellow 2RL (manufactured by Mitsui Toatsu Chemical Co., Ltd.) 0.01% Dyeing bath temperature: 95°C Dyeing time: Kato a'-4hrs, Basket b'-2hrs
1, basket c'-0,5hrs.

The dyed veneer was then subjected to the same process as the drying and flitching process of Example 1, and the resulting irregularly deformed flitch was sliced to obtain a 2 mm thick artificially decorated veneer.

The teak-like wood grain pattern reproduced on the surface of the resulting artificially decorated veneer showed subtle changes in shade within the same wood grain layer that closely resembled natural wood.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are explanatory diagrams showing an outline of the present invention. 1, 1'... Material piece, 2, 2'... Glued laminated wood, 3... Sliced veneer, 4... Uneven deformed type, 5... ...Uneven deformed flitch, 6...
...Artificial decorative veneer.

Claims (1)

[Claims] 1. A step of combining logs of different types of wood to form laminated wood; a step of slicing the laminated wood to obtain sliced veneers; a step of laminating and press-bonding the sliced veneers to obtain a flitch; A method for producing an artificial decorative veneer, comprising: slicing a flitch; a dyeing process performed after any one of slicing the laminated wood to obtain sliced veneers and slicing the flitch.