JPS5845906A - Manufacture of decorative veneer - 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 The present invention provides a method for manufacturing a decorative veneer K11l.

As shown in the 1st WAK, the conventional decorative veneer wood veneer is made of summer wood part 1 and spring wood part 2 to 1. Some are made up of layers. These two-color layers are formed, for example, in the case of the light-colored layer 1a, by printing each material unit [3...0] on one side in a light summer wood color, and in the case of the dark-colored layer lb, each material unit gx i Use a dark summer wood-colored adhesive as the adhesive between the two.

However, such a surface decorative veneer 4 has a color density characteristic diagram as shown in FIG.
°The vertical axis represents the color density)K As shown, the color density in the summerwood part l and the springwood part 2 varies from the dark layer lb' of the summerwood part 1' to the maximum of the light color layer 11' and the springwood part 8'. A gradual transition to light-colored layer 2, / occurs, and the color density O gradually changes to light-colored layer l' in the summerwood part l', as seen in the x natural wood O color density characteristic diagram in Figure 3.
There is a problem that it gives an unnatural feeling because it cannot express the island'.

Therefore, an object of the present invention is to provide a method for creating a makeup ratio that can express gradual changes in color density O of the summer wood portion and is rich in natural appearance.

An embodiment of this invention will be described with reference to FIG.

That is, as shown in FIG. 4(a), the method for manufacturing this decorative veneer is to apply urethane μV paint to one side of a bleached material veneer 5, evaporate the moisture, and apply wood 11 waves. (
Figure 4 (to)) is formed. Next, the material veneer S on which the resin film 6 was formed was dyed with a water-soluble dye to obtain j1!4.
A dyed veneer 7 shown in the figure (→) is formed.

Then, this dyed veneer sheet is made of resin whose color density is darker than that of the material veneer S, and a dark colored part 6a with the highest color density is formed on the surface layer of the resin skin W7a6. A transitional part 6k is formed in which the color gradually becomes lighter from the dark colored part 6 to the inside of the film. The reason why this dyeing effect is exhibited is due to the following ring inside. That is, the laxity of the urethane emitter film 6 (due to boiling during dyeing) is significantly reduced, making it easier to dye the material veneer 5 as well. The tendency is particularly
It can be seen more strongly. On the other hand, Emma A/ip, ν0111
As 11, I used Ure I Siema A/v Lightning and rounded it up.
Even if it is boiled, the strength does not deteriorate at the end and returns to the emulsion, and dyes can be adsorbed well due to the fact that it has an active group called urethane. From within these rings, a dyed single 1 [7] having t dark colored areas 6a and transition areas 6b in the resin film 6 is obtained.

Next, these plurality of dyed veneers 7.- are subjected to 1. 4th ■(
As shown, the resin skins M6-- are laminated with adhesive in the same direction, and then glued together to form the assembled flitch 9.

Thereafter, the assembled flitch 9 is moved in a predetermined direction intersecting the laminated surface as shown in FIG. 4(d).
Figure 4 (・)K shows the makeup unit ll1l sliced from K.
Get ink.

The nine-veneered veneer 11 manufactured in this way is made of single material! i
- can express the light color of the summer wood part 12... and the resin skin 111g - can express the dark color of the summer wood part 13..., and the resin film 60, the dark color part 6 & and the transition part @b
It is possible to express the gradual color density of the summer wood part 13 from K, and to obtain a wood grain pattern rich in natural feeling.

The following is a summary of the essential aspects of the above implementation (Example K) with specific conditions.

Fruit 11 Al11 1 118L 9 Agatis veneer 51'C Urethane emul V-n 8130-609/d@ cloth. Tsuh-7", 9ONZ
Immerse in a dyeing bath whose liquid temperature is controlled at 0°C. The obtained dyed veneer 9 (after adjusting the moisture content of 7 to a specified moisture content, laminating a plurality of veneers with an adhesive, pressing and adhering) 9 was obtained, and this was sliced to form a decorative veneer 11. get. Obtained decorative veneer 1
In No. 1, the resin coating 6, that is, the summer wood portion 13 had a transposed wood grain pattern rich in natural wonder, including a dark colored portion 6 and a transition portion 6h.

Practical theory koji-sama 3 urea Ine yyji*F60 theory cloth amount 4IO-10 (V
The decorative veneer 11 was manufactured under the same conditions as the above-mentioned experiment except that the width of the summer wood portion 13 was increased to /s/. The obtained decorative veneer 11 has a wide summer wood part 13, a dark colored part 6a and a transition part -11. It had a rich pine-like wood grain pattern.

As described above, the method for producing decorative veneer according to Jin's invention involves bleaching a piece of 9-material veneer, coating it with NKf)Vl-N-EmaμV-benzene to form a resin film, and dyeing the material veneer. A dyed veneer is formed, and a plurality of these dyed veneers are laminated in the same direction using a resin skin with a 5V adhesive and then assembled by pressing and gluing. 7
Because it is riced, it is possible to express the gradual loveliness of the summer wood part, which has the effect of producing a decorative veneer with a rich natural feel.

Next, when decolorizing wood such as a single veneer using hydrogen peroxide, a method for reducing self-decomposition of hydrogen peroxide, which has an adverse effect on the decolorization of wood, will be described.

In other words, in this method, the wood is boiled in a K1CO3 aqueous solution for a certain period of time in a state close to that, and then the wood is decolorized with hydrogen oxide, or the wood is washed with water (hot water) and then decolorized with hydrogen peroxide. To explain in detail, when wood is bleached using H2O2, autodecomposition of H*Om occurs due to the wood extract dissolved in the bleaching solution. Therefore, by pre-treating the wood with a KfiCO3 aqueous solution, it is possible to extract 9-in-ni-v from the wood and precipitate it as a solid content in the pretreatment 3IIW1. Therefore, the decolorizing solution does not contain a large amount of water exchange extracts such as H2O2 which can act as a catalyst for decomposing H2O2 from wood, and the self-decomposition of H2O2 can be suppressed. Moreover, when the decolorizing solution is used repeatedly, H2O
The self-decomposition of No. 3 is particularly suppressed, H2O2 consumption and foaming are reduced, and the decolorization time can be shortened.

Next, a proposed example in which specific conditions are given for the above method will be described below.

Proposal example 10 Cod thick Agati slow I Lee sliced veneer, 201G
(W/V) 1ctcO3 aqueous solution to bath ratio 40. Soak for 2 hours at a temperature of 9z/°C and immerse in 95°C O water for 30 minutes. This veneer is decolorized by immersing it in a decolorizing wave of the following composition at 65° C. for 1 hour.

To the decolorizing solution composition for pretreatment, add K2CO3 to the 2CO3 aqueous solution so that the pH (hydrogen sulfide concentration) is equal to that before treatment,
Add K NaOH and H2O2, Mg80
4. Add 5/100 of the initial concentration of No. 14 silicate saw.

After Jinyo & treatment, 1.0g Agana Slow JII again
10 steps of pre-processing and decolorizing the F-slice veneer
The 11th series is a circle, and the H2O2 concentration in the decolorizing solution after the completion of the decolorizing treatment was measured after decolorizing the decolorizing solution and the decolorizing solution without any pretreatment in the same manner as above for 10 times. I was at work. In the figure, the horizontal axis represents the number of times of decolorization, and the vertical axis represents the HiOa concentration, that is, K2CO
As the number of times of decolorization increases, the characteristic extension line B when no pretreatment is performed in step 3, the 1g0t concentration decreases (in contrast to 9, Kt
O characteristics of the field pretreated with COs - line ct1 After repeated decolorization times, the H2O2 concentration did not decrease at all, and KpCOs
It has been found that pretreatment with lfc has the effect of suppressing the autodecomposition of H2O2.

Brief explanation of t aW No. Xi%il is a perspective view of a conventional decorative veneer, Fig. 2 is a density characteristic diagram of the company, Fig. 3 is a natural wood O color density characteristic diagram, and Fig. 4 (a) - (.) is a manufacturing process diagram of an embodiment of the present invention, and FIG. 5 is a hydrogen peroxide concentration characteristic diagram.

5-Material veneer, 6-film, 7.-dyed veneer, 9-laminated flitch, 11-.decorative veneer → tenretsuki tsuka fertilization device-number of times of bleaching 5th figure

Claims (1)

[Claims] Apply VIN Emulgyro ν to one side of the bleached material veneer to engrave a resin film, dye the material veneer to form a dyed veneer, and apply these dyed veneers to each resin coat. A decorative veneer in which M is laminated in the same direction with an adhesive, pressed and bonded to form a composite flitch, and the layered flitch is sliced in a predetermined direction intersecting the laminated surface. ·Production method.