JPS5845052Y2 - Wood veneer decorative plywood - Google Patents

Description

[Detailed description of the invention] The present invention uses a large number of rectangular supplementary veneers impregnated with synthetic resin, with the fiber direction perpendicular or approximately perpendicular to the fiber direction of the surface veneer of plywood. In addition, it relates to decorative plywood with wood veneers attached side by side to plywood so that the straight grain direction of the cross section is opposite between adjacent veneers, and its purpose is to improve durability. To provide a widely used decorative plywood laminated with wood veneer which greatly improves crack resistance and expresses a pseudo-checkered pattern.

Conventionally, checkered pattern wood veneer decorative plywood has been produced using a large number of wood veneers cut into square shapes, as shown in Figure 1.
..., wood veneers adjacent to each other.

The fibers were placed side by side so that the fiber directions were perpendicular to each other, and were pasted on the plywood opening.

However, in the above-mentioned conventional decorative plywood laminated with wood veneers, if the fiber direction of each wood veneer is perpendicular to the fiber direction of the surface layer veneer at the plywood opening, then the individual wood veneers can be pasted parallel to each other. In particular, wood veneer A, which is pasted parallel to the fiber direction of the surface layer veneer A of the plywood opening, has the disadvantage of being susceptible to cracking due to changes in the surrounding environment. was.

The present invention has been made in view of the drawbacks of the conventional decorative plywood laminated with wood veneers, and it is an object of the present invention to provide a decorative plywood laminated with wood veneers that can produce a checkerboard pattern.

Hereinafter, the present invention will be explained in detail based on the embodiment shown in FIG.

In the present invention, a large number of square-shaped supplementary veneers 1 impregnated with synthetic resin are positioned so that the fiber direction thereof is orthogonal to the fiber direction of the surface layer veneer 3 of plywood 2, and the supplementary veneers 1 adjacent to each other are The boards 1 and 1 are arranged side by side so that the straight grain directions of the cross sections are opposite to each other, and are attached to plywood 2 with an adhesive.

As shown in FIG. 3, the supplementary veneer 1 used in the present invention has a straight grain on the surface 4, and the grain of the cross section 5 perpendicular to the grain direction of the surface 4 is relative to the surface 4. Thickness 0.2 to 2. It is □mm.

Further, the synthetic resin used in the present invention is suitably a polyester resin or other thermosetting resin, and the supplementary veneer cut from raw wood is impregnated by immersing it in a synthetic resin liquid.

Of course, impregnation can be easily carried out by performing operations such as reducing or increasing pressure at this time.

The molecular weight of the synthetic resin is preferably 1000 or less in order to facilitate impregnation.

The supplementary veneer impregnated with a synthetic resin and cured appears dark in color when viewed from the direction of the arrow a shown in FIG. 3, and appears light in color when viewed from the direction of the arrow b shown in FIG.

Furthermore, the plywood 2 used in the present invention is 3 made by laminating lauan veneers.
It is preferable to use a material with 7 to 7 plies and a thickness of 5 to 15 mm.

In addition, urea resin adhesive, phenol resin adhesive, etc. are suitable as the adhesive used in the above examples, and supplementary veneer impregnated with synthetic resin in an uncured or semi-cured state is directly juxtaposed on the plywood. At the same time, if you press it with a hot press,
The synthetic resin impregnated into the supplementary veneer acts as an adhesive between the supplementary veneer and the plywood, and no special adhesive is required.

The present invention is constructed as described above, and since the fiber direction of all of the many supplementary veneers attached to the plywood is orthogonal to the fiber direction of the surface layer veneer of the plywood, changes in ambient humidity etc. The expansion and contraction of the composite veneer and the expansion and contraction of the supplemented veneer work in orthogonal directions to each other, and have the effect of reducing cracks in the supplemented veneer. is in the opposite direction, so depending on the viewing angle, that is, when viewed from a direction obliquely orthogonal to the straight-grain direction of the surface of the supplemented veneer, the supplemented veneer has the effect of appearing in a checkered pattern with shades of light and shade, creating a pseudo-checkered pattern. are doing.

The main uses of the wooden veneer decorative plywood according to the present invention include flooring materials, wall materials, etc.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional wood veneer decorative board, Figure 2 is a perspective view of the wood veneer decorative board of the present invention, and Figure 3 is a supplementary sheet used for the wood veneer decorative board of the present invention. It is a perspective view of a board. 1...Additional veneer, 2...Plywood, 3...
...Surface veneer.

Claims (1)

[Scope of utility model registration request] A large number of rectangular supplementary veneers impregnated with synthetic resin are positioned so that the fiber direction thereof is perpendicular or substantially perpendicular to the fiber direction of the surface layer veneer of the plywood, and between adjacent supplementary veneers. Decorative plywood made of wood veneer that is laminated side by side to plywood so that the straight grain direction of the cross section is in the opposite direction.