JPS627544A - Manufacture of decorative flitch - 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 (a) Field of Industrial Application The present invention relates to a method for producing decorative plywood for applying decoration to the surface of plywood used as a material for architecture, furniture, etc.

(b) Conventional technology and problems to be solved by the present invention Conventionally, when manufacturing decorative plywood by painting lauan plywood or veneered plywood with large dedicated grooves, the surface of the material was polished. The common practice was to color the base, apply an undercoat, polish the painted surface smooth, and then apply a topcoat to finish, but this type of method requires at least a polishing process and However, it requires two or more painting processes, and after painting, it must be dried naturally at room temperature to prevent foaming of the wood, so the manufacturing time is very long. there were.

In addition, when coloring the base material, it is extremely difficult to color plywood made of materials such as lauan, tachi, and fen, which have large conduit grooves, so that the pattern of the conduit grooves does not disappear.

(c) Means for Solving the Problem In view of the above-mentioned problems, the present invention has been developed by applying a resin adhesive to the surface of the plywood to a substantially uniform thickness and drying it to a semi-dry state so that the concave portions of the conduit grooves are removed. When it is formed, an overlay paper with good resin impregnation properties is layered, and the overlay paper is pasted on the plain wood except for the concave conduit grooves, and the conduit grooves are covered with the overlay paper and formed into a hollow shape. After that, a dye is applied to the overlay paper and permeated to color the conduit grooves a darker color than the other smooth wood parts, thereby clearly expressing the wood grain pattern.

(D) Embodiment An embodiment of the present invention will now be described with reference to the drawings.

1 and 2 are decorative plywood manufactured by the method of the present invention, in which (1) is lauan plywood and (2) is lauan plywood coated on the entire surface of the top plate (a) of (1). adhesive,
(3) is a conduit groove formed in the top plate (a); (4)
(5) is an overlay paper that is pasted on top of the adhesive (2), and (5) is a spring color dye that is applied on the overlay paper (4).

Next, an embodiment of the method of the present invention will be described below with reference to the drawings.

As shown in Fig. 3(B), a spreader machine (
The vinyl acetate resin adhesive (2) is uniformly applied using the roller (b) in the machine (not shown in the drawing), and the applied adhesive (2) is dried until it becomes semi-dry. As shown in C), the adhesive (2) filled in the conduit groove (3)<3>...(3) has a dent (C) (C)...(C
) is formed, the roll (d
) to attach the overlay paper (4) and create a hollow conduit groove (e) (e)...
・After forming (e), apply the desired color to the surface of the overlay paper (4) using a sponge roll ( ) in a coating machine (not shown in the drawing) as shown in Figure 3 (E). If you apply the blended alcohol coloring dye (5), the third
As shown in Figure (F), the colored dye (5) penetrates the overlay paper (4) and forms a hollow conduit groove (C).
...(C), and the smooth wood part (a) is blocked by the adhesive (2) that has seeped into the lower layer of the overlay paper (4), causing the colored dye (5) to overlay. Paper (4
) because it only slightly penetrates the surface layer of the colored dye (
5) Conduit groove (e) (e) where a lot of water has seeped into it.
...(e) is colored darkly, and the wood is colored light, so that the grain pattern of the lauan plywood is clearly expressed.

In addition, after drying the alcohol solvent, for example, apply a urethane resin matte colored clear paint, and then
If it is left for about 3 minutes at a temperature of 0°C and then dried for another 10 minutes at a temperature of 60 to 80°C, a beautiful decorative plywood with a woody feel will be obtained.

(E) Effects of the Invention The method of the present invention attaches overlay paper to the surface of the plywood, so the base surface becomes smooth and flat, so there is no need for the conventional polishing process, which improves production efficiency. It is possible to provide an inexpensive decorative plywood with improved performance.In addition, by pasting the overlay paper, a hollow conduit groove is formed in the adhesive layer between the overlay paper and the plywood, and the adhesive layer coated on the overlay paper is formed in this conduit groove. The colored dye has penetrated into the wood a lot, and the overlay paper attached to the wood has only a small amount of colored dye seeped into the surface layer, so the part of the conduit groove where the spring color dye has soaked in is darkly colored in the wood. The parts are colored in a light color, and the conduit grooves and wood parts are clearly distinguished from each other, so this is a very effective method for manufacturing decorative plywood.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a part of decorative plywood manufactured by the method of the present invention. FIG. 2 is an enlarged perspective view of the main parts of decorative plywood manufactured according to the present invention. FIG. 3 is an explanatory diagram showing the steps of the present invention. (1) in the figure is plywood. <2) is adhesive. (3) is the conduit groove. <4) is overlay paper. (5) is a colored dye.

Claims (1)

[Claims] Apply a resin-based adhesive to a uniform thickness on the surface of the plywood, dry the applied adhesive until it becomes semi-dry, and then attach an overlay paper with good resin impregnation properties to form the conduit. After the grooves are formed into hollow shapes, dye is applied to the surface of the overlay paper, and the hollow conduit grooves are impregnated with a large amount of dye into the smooth wood, creating a clear wood grain pattern. A manufacturing method for decorative plywood.