JPS5844044B2 - Manufacturing method of wood decorative veneer - Google Patents

Description

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

Natural precious wood tends to be in short supply due to resource depletion, and since each natural precious wood has different quality and color tone, it is difficult to obtain homogeneous wood in large quantities. Manufacture of artificial precious wood is being carried out.

This artificial precious wood is usually produced by uniformly dyeing the wood as a veneer, laminating it with a colored adhesive, pressing it with a textured plate to create a textured flitch, and slicing this. To obtain a decorative veneer, the color of the dyed veneer,
We try to express the wood grain of spring and autumn wood by the color of the colored adhesive, but there are subtle changes in the color of the autumn wood part of the so-called spring and autumn wood of coniferous trees such as pine wood, and There was a problem in that it was extremely difficult to reproduce the clear boundary between wood and spring wood.

Therefore, an object of the present invention is to provide a method for producing a decorative wood veneer that closely resembles natural precious wood.

That is, the present invention is characterized by using veneers that are dyed entirely and partially dyed by printing, stacked and pressed to form flitches, and then sliced. This is made into a board, and the whole is dyed in a light color uniformly by dip dyeing, and then one side of the board is printed with a shaded pattern, etc., and then the parts are double printed and ground dyed as shown in Figures 1 and 2. The dyed veneer 4 has a dark printed part 2 and a light colored printed part 3 on its surface.The ground-dyed part 1 expresses spring material, and the dark printed parts 2 and 3 represent autumn. The dyed veneer 4 is used to create a decorative veneer through uneven flitching according to a conventional method.

In addition, when forming this uneven flitch, as shown in FIG. The decorative veneer 8 may be obtained by laminating and pressing the veneer 7 and slicing this.

The decorative veneer obtained in this way is expressed by subtly changing the color of the autumn wood part by printing, and when combined with the color of the spring wood part, it has an appearance that is very similar to veneer obtained from natural precious wood. It is what it is.

Example 1 A veneer obtained by cutting Cayutina wood to a thickness of 1 inch was treated with a 0.015% aqueous solution of the dye Nisminol Milling Brown 3G (C, 1, Acid Bra Brown 13, manufactured by Sumitomo Chemical Co., Ltd.). After boiling and dyeing to bring the moisture content to 200-300%, one side of the veneer is coated with dye: C0■, Acid Brown 13:2% and C,I, Acid Brown 1 using a roll coater.
9:0.05%, sizing agent sodium nyalginate: 1%, dyed in a light color with a printing agent, and then coated with another coal coater to coat C01, Acid Brown 13:2%,
Sodium alginate: Partially dyed in a deep color with a printing agent containing 1%, dried to a moisture content of about 80%, coated with urethane adhesive, laminated, and cold-pressed using a concave-convex plate. formed a flitch.

The decorative veneer obtained by slicing this flitch had an appearance that closely resembled natural pine, with the autumn wood having subtle color changes in shading, combined with the spring wood.

Example 2 A veneer obtained by rotary cutting agathis material to a thickness of 1 inch was
Suminol Milling Brown 3G (C, I.

It was boiled in a 0.012% aqueous solution of Acid Brown 13) and dyed in spring wood color.

On the other hand, thickness 0.4mm, 0.6mm, 0.8mvt
Four types of veneers, each rotary cut to 1.0 mm, were boiled in a 0.1% aqueous solution of Suminol Milling Brown 3G (C, 1, Acid Brown 13) and dyed a summer wood color, and the moisture content was determined. After adjusting the ratio to 200 to 300%, one or both sides of each of these veneers were appropriately printed using a roll coater.

The dye of this printing agent is 2% C,1, Acid Brown 13, and the sizing is 0.3% carboxymethyl cellulose.
I used the one that included.

The moisture content of these printed veneers is then adjusted to approximately 70%, and the veneers dyed in the spring wood color are laminated with a polyurethane adhesive as appropriate, and flitched by pressing with a concave-convex plate. was formed.

When we sliced this flitch and made it into decorative veneer, the surface showed subtle color changes in the autumn wood and clear boundaries between the spring and autumn wood, and it looked so similar to natural pine that it was indistinguishable. was.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a veneer during the process of this invention, FIG. 2 is a side view thereof, and FIG. 3 is a process explanatory diagram showing another example of this invention. 2.3...Printing part.

Claims (1)

[Claims] 1. A method for producing decorative wood veneers, which comprises using veneers that are dyed entirely and partially dyed by printing, laminated and pressed to form flitches, and then sliced.