JPH0672011A - Manufacture of decorative wooden material - Google Patents

Abstract

PURPOSE:To provide a method for manufacturing a decorative wooden material in which a ligneous feeling of a wooden material is utilized by a direct printing method. CONSTITUTION:A method for manufacturing a decorative wooden material by a direct printing method comprises the step of coating with a transparent coloring layer 2 by a gravure offset process in a laminated structure of at least a printing layer and a transparent colored layer 2 on the wooden material 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing decorative wood utilizing the wood texture of wood by direct printing.

[0002]

2. Description of the Related Art Among decorative woods that form a wood grain pattern on the surface of wood such as plywood, so-called printed plywood can be manufactured by a paper sticking printing method in which a decorative paper is pasted on a base material or directly on the base material. There is a direct printing method for printing. The direct printing method will be described in more detail. The wood surface is sealed, ground, ground color is painted, and a wood grain pattern is printed.
This is a method of applying top-coat paint. A roll coater, a flow coater, and a spray are used as a coating machine for the base color and the top coat paint.
Due to the performance of the coating machine, one with a relatively low viscosity is used.
A gravure offset printing machine is used as a printing machine for printing a grain pattern. The gravure offset printing machine is used as a printing machine that prints on a rigid plate, but it is not used because of its limited coating thickness for painting. The wood grain pattern is the painted background color and the printed 1, 2
It is expressed with a color wood pattern, and this base color is opaque,
The base color is responsible for the color tone that the entire wood grain pattern produces, evenly painted over the entire surface. For example, in the case of a red rosewood pattern, a red paint is used as the base color.

In recent years, since it is difficult to express the wood texture of real wood only by printing and painting, patterns are created by printing, but attempts have been made to produce the wood texture from the wood itself. In other words, using inexpensive wood, printing the wood grain pattern of expensive wood such as rosewood, walnut, teak, cherry, etc. without sacrificing the wood texture of the wood, the real feeling of expensive wood Is a way to put out. To prevent the wood texture from being killed, use a transparent colored paint as the base color paint. Because it is transparent, the surface of the wood can be seen. In the wood grain pattern printing, transparent ink or opaque ink is used.
When using opaque ink, select a pattern that does not cover the entire wood so that the surface of the wood can be seen between the patterns.

[0004]

However, when the transparent coloring paint is applied by the above-mentioned coating machine (roll coater, flow coater, spray), the wood to be coated has innumerable conduits, as shown in FIG. Then, the transparent colored paint 2 having a low viscosity flows into the recess of the conduit 3 and only the portion of the conduit 3 is thickened and the color is darkened, and the conduit 3 is emphasized. Often does not match the wood grain pattern. This is because it did not occur when an opaque paint was used, and if the thickness is more than a certain amount, it looks the same color even if the thickness is different.

On a piece of wood with conduits that are innumerable depressions,
As a result of earnest studies on a manufacturing method for forming a transparent colored paint layer with a uniform thickness, it was solved by using a gravure offset printing machine as a coating machine for coating the transparent colored paint.

[0006]

The present invention is a method for producing a laminated structure in which at least a printing layer and a transparent coloring paint layer are provided on wood, wherein the transparent coloring paint layer is applied by a gravure offset printing machine. Is a method for manufacturing decorative wood by the direct printing method.

The laminated structure of decorative wood in the present invention requires at least a transparent coloring paint layer and a printing layer. However, the transparent coloring paint layer is provided first and then the printing layer is provided, or the printing layer is provided first. After that, a transparent colored paint layer is provided. Further, the transparent colored paint layer may be provided first, and then the printing layer may be provided, and further the transparent colored paint layer may be provided to form three layers.

As shown in FIG. 3, the gravure offset printing machine comprises a gravure plate 7, an offset roll 8 made of rubber, and a pressure roll 9. The ink 11 of an ink pan 10 is filled in a recess 12 of the gravure plate with a doctor 13, The printing machine prints by transferring the ink in the recess 12 to the offset roll 8 and further from the offset roll 8 to the substrate 1 sent by the feed claw 14.

[0009]

[Function] By using the gravure offset printing machine, the ink and paint are transferred from the gravure plate to the rubber offset roll and then to the coated plate, so the solvent of the paint evaporates during the transfer. Then, the ink or paint is formed into a film, and the ink (paint) 2 is applied so as to cover the conduit 3 which is a recess as a film as shown in FIG. 2, so that the entire plate to be coated has a uniform thickness. Can be applied with.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment based on the present invention will be described in detail with reference to FIGS. <Example 1> The wood is a veneer, a laminated wood, a plywood, or a solid wood, which is relatively inexpensive and is preferably a white-colored light wood with little wood grain, and particularly preferably wood wood texture. A lamin material was selected as the base material 1 for such wood. The surface of the wood is polished and smoothed so that it can be printed and painted easily. The surface of the Ramin material (thickness: 15 mm) was polished with # 360 polishing paper. Next, with the gravure offset printing machine of FIG. 3, the transparent coloring paint 2 was applied as a background color. A gravure solid plate 7 of a grid type cell having a plate depth of 40 μm is used as a plate, and a transparent colored paint 2 colored with a red dye having a resin content of 40% is used as a transparent colored paint 2 at a speed of 8 m / mi.
The transparent colored solid film 2 having a thickness of 15 μm was applied through the substrate 21 by n.

After drying, a rosewood pattern was used as a wood grain pattern and printed with a printing ink (opaque black-brown system) 4 by the gravure offset printing machine shown in FIG. 3 In order to further protect the printing layer, a top coat transparent paint is generally used. The surface is covered. At this time, if the sanding sealer is first applied and polished, the transparent topcoat can be applied more smoothly. Next, the sanding sealer 5 was applied on the printed surface to a thickness of about 50 μm, and after curing, # 400 abrasive paper was coated with 5 parts of a glossy top-coating transparent coating 6 to a thickness of about 30 μm and dried. In the finished product, the surface of the laminous material was visible from between the rosewood patterns, that is, there was a woody texture, and a product close to a real rosewood was obtained. This printed wood is ideal for furniture, flooring, etc.

<Embodiment 2> In the first embodiment, printing is performed first, and the transparent coloring paint 2 is then formed.
A rosewood pattern material having a wood texture was obtained in the same manner as in Example 1.

Comparative Example A transparent colored coating material 2 was applied to the polished lamin material of Example 1 with a roll coater, and after printing, a rosewood pattern was formed through the same steps as in Example 1. The conduit was not conspicuous, did not match the rosewood pattern, and was extremely unnatural.

[0014]

According to the manufacturing method of the present invention, no sealing is required, and a uniform colored layer having no unevenness can be obtained even on a substrate having a recess such as a conduit. The product printed with a wood grain pattern using a transparent colored paint as the base color had a wood texture and was a decorative wood similar to natural wood.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of decorative wood produced according to the present invention.

FIG. 2 is a cross-sectional view in which a transparent coloring paint is applied to wood with a conventional applicator.

FIG. 3 is a sectional view of a gravure offset printing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Transparent colored coating 3 ... Conduit hollow 4 ... Ink 5 ... Sanding sealer 6 ... Top coating polishing surface 7 ... Gravure plate 8 ... Offset roll 9 ... Pressure roll 10 ... Ink pan 11 ... Ink 12 ... Recess 13 … Doctor 14… Feeding claw

Claims (1)

[Claims] 1. A method for producing a laminated structure in which at least a printing layer and a transparent colored solid layer are provided on wood, wherein the transparent colored solid layer is applied by a gravure offset method to obtain decorative wood by direct printing. Production method.