JPH0663499A - Coating method for wood - Google Patents

Abstract

PURPOSE:To prevent burr from appearing, simplify a coating step of wood and improve ease of operation by applying a quick-drying resin paint which becomes dry under specified conditions to the surface of a wood cut by a cutting blade, directly and in a coat thickness of 15 to 20mum and drying the coat. CONSTITUTION:The method for coating a wood is without a texture sanding step, a foundation coating step, a drying step and a sealer grinding step which are otherwise included in a conventional process. A quick-drying resin coat which dries in 10 minutes under conditions of a coat thickness of 20mum max, is applied directly to the surface of a wood cut by a cutting blade so that the thickness of the coat is 15 to 20mum, and then is dried. Thus a coated layer 2 becomes dry while a burr 1 rises upright by absorbing a solvent and no longer protrudes from the coated layer 2, if the coat is 15 to 20mum thick and dried in 10 minutes or less. Consequently, it is possible to prevent the burr from standing upright without applying an undercoat paint or grinding a sealer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applied to wood with deep conduits, such as lauan timber, which is used for a part where tactile sensation upon contact rather than the aesthetics of the middle frame of the yagura kotatsu yagura wooden frame is important. The present invention relates to a coating method for applying a predetermined coating, and provides a coating method that simplifies the coating process and enables quick coating work.

[0002]

2. Description of the Related Art Conventionally, wood coating is generally performed by cutting the surface of a base material, for example, a lauan material, with a rotating cutting blade so as to be a flat surface (Moulder process), as shown in FIG. , For example, an undercoating with an aminoalkyd resin paint in which thinner 100, dye 12, clear 30, and curing agent 3 are mixed in a weight ratio (undercoating step), 5
After drying at 0 ° C for 20 minutes (drying step), the surface is polished with paper (sealer polishing step), and the coating material 100, the curing agent 10 and the thinner 40 are mixed in a weight ratio on the surface of the coating material to apply the top coating. (Overcoating step), a predetermined coating operation was completed through a drying step at 50 ° C. for 30 minutes.

[0003]

When wood is cut with a rotary cutter, a slight unevenness 3 called a knife mark is formed on the surface after cutting and a large number of wood fibers are projected as shown in FIG. 4 (a). You can do so-called “fluff” 1.

Conventionally, an undercoat was applied to eliminate the influence of the "fluff" 1. However, as shown in FIG. 4B, the "fluff" 1 is applied before the undercoat layer 4 is dried. Sometimes absorbed solvent and stood up to be fixed in a state of protruding from the base paint layer 4, and the coating layer was raised at the root of the “fluff” 1. Therefore, the sealer polishing step for removing the "fluff" 1 protruding from the base paint layer 4 and the swelling of the base paint layer 4 is indispensable.

In particular, when the material sanding step of removing the knife marks 3 formed on the surface of the wood by cutting and polishing with paper in order to make the surface smoother, when the paper polishing is performed, the knife marks 3 was removed, but the surface of "fluff" 1 was roughened by the paper and became larger, and the sealer polishing step after the base coating step was indispensable. The present invention, as described above,
In order to prevent fluffing on the wood surface after painting, the basic concept of conventional wood painting, which requires the steps of base painting and sealer polishing, is broken down, the painting process is simplified, and quick painting work is performed. It is intended to provide a coating method capable of

[0006]

The method for coating wood according to the present invention is a method in which a quick-drying resin coating which has a coating film thickness of 20 μm or less and is dried within 10 minutes is directly applied to the surface of wood cut by a cutting blade. Apply so that the film thickness is 15-20 μm or more,
It is characterized by being dried.

[0007]

[Function] When wood is painted, it is confirmed that the solvent of the paint is absorbed by the roots of the wood fiber “fluff” due to the capillary phenomenon and the “fluff” rises and protrudes from the paint layer. According to the present invention, by using a quick-drying paint, as described above, the "fluff" absorbs the solvent and is configured so that the paint layer is cured before it starts up, so that the "fluff" is the paint. It is designed so that it does not protrude from the layer.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the steps of the method for coating wood according to the present invention, in which the material sanding step, the base coating step, the drying step, and the sealer polishing step are removed from the conventional steps shown in FIG. A characteristic feature is that a quick-drying paint is used as the paint used in the overcoating step. As this quick-drying paint, for example, weight%
With special modified vinyl resin 8.0%, alcohol solvent 6
0.0%, aromatic solvent 22.0%, ketone solvent 1
There is 0.0% polyvinyl modified paint. This paint is
It is fast-drying and can be dried within 10 minutes at a coating thickness of 20 μm or less.

As a result of various experiments in which the type of paint and the thickness of the coating film were changed, if the coating film thickness was 15 to 20 μm and dried within 10 minutes, the coating layer dried while "fluff" absorbed the solvent and stood up. Then, as shown in FIG. 2, the “fluff” 1 is the paint layer 2
It was confirmed that there was no protrusion from the.

[0010]

As described above, according to the present invention, fluffing can be prevented without performing base coating or sealer polishing, and the wood coating process is simplified and the workability is improved. .

[Brief description of drawings]

FIG. 1 is a process chart showing an embodiment of a method for coating wood according to the present invention.

FIG. 2 is a cross-sectional view schematically showing wood coated by the wood coating method of the present invention.

FIG. 3 is a process diagram showing an example of a conventional coating method for wood.

FIG. 4 (a) is a cross-sectional view schematically showing wood cut by a rotary cutting tool, and (b) is a cross-sectional view schematically showing conventional wood with a base coating applied.

[Explanation of symbols]

 1 Fluff 2 Paint layer 3 Knife mark 4 Base paint layer

Claims (1)

[Claims] 1. When the coating film thickness is 20 μm or less, 10
A method for coating wood, characterized in that a quick-drying resin coating which dries within a minute is directly applied to the surface of the wood cut by a cutting blade so that the coating film thickness is 15 to 20 μm, and then dried.