JPH0557082B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to decorative plywood, and more particularly to decorative plywood in which decorative veneers are pasted in a radial pattern, and a method for manufacturing the same.

Decorative plywood is plywood with various wood grain patterns formed by combining the wood grain patterns of decorative veneers laminated on top of the base plywood.The beauty of the combination of wood grains makes it suitable for surface treatment of furniture and other furnishings. It is used as plywood. Recently, various decorative plywood patterns have been created by combining various decorative veneers according to customer preferences, but there are also products in which multiple decorative veneers are arranged on a base plate to form a radial pattern. It's starting to go around.

In this case, in the case of conventional radial pattern pasting, such as kujiyaku pattern pasting or mass pasting decorative plywood,
The decorative veneers are arranged or pasted one after another on the baseboard, and the overlapping parts of the final decorative veneer and the first decorative veneer are cut to form a kujiyaku pattern or square pattern. It is manufactured. For example, as shown in Fig. 1, if 24 decorative veneers are arranged on a base plate (not shown) to form a kujiyaku pattern, decorative veneers No. 1 to 24 in the figure are arranged as follows. Starting from any location in sequence,
They were constructed by placing them next to each other.

However, in the conventional method of arranging decorative veneers, although it is fine if the wood grain unique to the veneer does not change much, when creating a kujiyaku pattern using a complicated wood grain, it is necessary to first There was a large difference in pattern between the arranged decorative veneer (veneer No. 1 in Figure 1) and the final decorative veneer (veneer No. 24 in Figure 1), which was not desirable. It was something I couldn't say. This was an unavoidable problem with such conventional methods since decorative veneers with the same pattern had to use the grain pattern of the same wood.

An example of the surface pattern of decorative plywood A with a kujiyaku pattern formed by such a conventional method is shown in FIG.

The present invention solves the problem of inconsistency in patterns formed when pasting radial patterns on the conventional decorative plywood described above, and particularly aims to provide a decorative plywood that gives a beautiful appearance.

In order to achieve this objective, the present inventor focused on the wood grain pattern that exists in decorative veneers, and from the fact that there is only a slight difference in the wood grain pattern between decorative veneers that are arranged sequentially. Place decorative veneers in groups of four on top of the plywood base, and place them in point-symmetrical and line-symmetrical positions, respectively, or in positions rotated by 90 degrees. The present invention was completed by confirming that it was sufficient to arrange the decorative veneers in a manner similar to that shown in FIG.

That is, the present invention provides a decorative plywood in which a plurality of decorative veneers are arranged on a base plywood in a radial pattern that spreads around a point and are hot-press molded, the number of which is a multiple of 4 exceeding 4. Decorative veneers are arranged one after another on the base plywood, and in this case, a set of four decorative veneers are arranged around the center point, with the second and second decorative veneers being placed in the position of the first decorative veneer. The third and fourth decorative veneers are placed in two positions, one symmetrical about the center point and the other two orthogonal axes passing through the center point, or in a set of four. The decorative veneers are sequentially placed around the center point at positions where the second, third, and fourth decorative veneers are rotated by 90°, 180°, and 270° with respect to the position of the first decorative veneer. This invention relates to decorative plywood with a radial pattern, which is preferably arranged so that adjacent veneers alternately face each other.

Furthermore, the present invention provides a method for manufacturing decorative plywood in which a plurality of decorative veneers are pasted on a base plywood so as to form a radial pattern that spreads around a point where the number of decorative veneers is a multiple of 4 exceeding 4. The veneers are arranged in sequence on the base plywood, and in this case, sets of four decorative veneers are arranged around the center point, second, third, and so on, relative to the position of the first decorative veneer. The fourth decorative veneer may be placed in two positions, one symmetrical about the center point and the other symmetrical about two orthogonal axes passing through the center point, or a set of four decorative veneers. The board is placed in order around the center point at positions where the second, third and fourth decorative veneers are rotated by 90°, 180° and 270° with respect to the position of the first decorative veneer. The veneers are preferably arranged in such a way that adjacent veneers are alternately facing each other, and the overlapped parts of the veneers in the final arrangement are cut in an overlapping manner, followed by thermoforming. This invention relates to a method for manufacturing patterned decorative plywood.

The radial pattern referred to in the present invention is a pattern formed by arranging a plurality of decorative veneers on a plywood base plate in a radial manner and spreading out from the center,
For example, the kujiyaku pattern, the square pattern, etc.

The decorative veneer used in the present invention is a decorative veneer obtained by cutting slices from ordinary lumber, and is selected so that it can be configured into a desired radial pattern by appropriately combining the grain patterns of the wood used. .

In addition, the number of decorative veneers arranged on the base plywood is as follows:
The number may be a multiple of 4 to form a desired radial pattern, and may be selected according to the consumer's preference. For example, if a thin radial pattern is desired, a large number of decorative veneers may be combined, and if a large radial pattern is desired, the number of decorative veneers may be reduced.

The present invention is particularly intended to eliminate the inconsistency in patterns observed in decorative plywood such as conventional kujiyaku pattern pasting, and when arranging decorative veneers on a base plate, the decorative veneers can be arranged symmetrically from a desired position sequentially. The aim is to avoid mismatching patterns between adjacent veneers. Then, after arranging the veneers in a symmetrical manner, the final veneers are cut at the overlapping parts to ensure matching of the patterns.

To explain the radial patterned decorative plywood A of the present invention with reference to drawings, as shown in FIG.
01 (not shown) through adhesive and is a multiple of 4.
24 decorative veneers 102... are arranged. In other words, starting from the decorative veneer No. 1 in the diagram, place the decorative veneer No. 2 in the diagram at a position that is symmetrical to the position of the No. 1 veneer with respect to the Y-Y line passing through the center point. Next, arrange the decorative veneer No. 3 in the figure in a position that is symmetrical about the center point with respect to the position of the No. 2 veneer,
Then, the above Y-Y for the position of No. 3 veneer
Decorative veneers No. 4 in the figure are arranged in positions symmetrical about the line, and then this arrangement is repeated one after another to complete the arrangement of 24 decorative veneers.

Next, overlapping cutting is performed at the line X-X and Y-Y in the figure, and a plurality of decorative veneers (24 in the figure) are brought into close contact with each other.

FIG. 4 shows an enlarged cross-sectional view of the overlapping cut portion taken in the direction of arrows in this figure. That is, the base plate plywood 10
Overlapping portion 1 of the decorative veneer 103 corresponding to No. 10 in Figure 3 above and the decorative veneer 104 corresponding to No. 9
In step 05, overlapping cutting is performed to form an abutting portion 106, and the veneers 103 and 104 are brought into close contact with each other.

Next, when the arrangement of the decorative veneers is completed, the laminate 107 is heated and compressed to produce decorative plywood.

FIG. 5 shows the placement and arrangement of decorative plywood A with a radial pattern according to the present invention. That is, in the figure, decorative veneers 102 in a number that is a multiple of 4 are arranged on a base plate plywood 101 (not shown) in a grid pattern using an adhesive, combining point symmetry and line symmetry as follows. In other words, starting from the decorative veneer No. 1 in the figure, place the decorative veneer No. 2 in the figure at a position that is symmetrical about the Y-Y line passing through the center point with respect to the position of the No. 1 veneer. Next, arrange the decorative veneer No. 3 in the figure in a position that is symmetrical about the center point with respect to the position of the No. 2 veneer, and then Arrange the decorative veneers No. 4 in the figure in a line-symmetrical position about the Y-Y line with respect to the position, and then repeat this arrangement one after another to arrange a multiple of 4 decorative veneers in a grid pattern. Arrange. In this arrangement, No. 5', 6',
The parts 7', 8', 13', 14' and 15', 16' are placed on the base plywood by using the dropped parts of the veneers 5, 6; 7, 8; 13, 14 and 15, 16, respectively. complete the array.

Next, in the X--X line and Y--Y line in the figure, the pieces are overlapped and cut in the same way as in FIG. 3, and heated and compressed to produce decorative plywood.

Adhesives used in these cases include melamine resin, urea resin, vinyl acetate resin emulsion, and ethylene-butadiene resin.

In addition, the heating compression conditions for the laminate are, for example, 105~
115° C., pressure 4-5 Kg/m ² , and 60-90 seconds.

The radial patterned decorative plywood of the present invention is manufactured as described above, but the decorative veneers are arranged on the base plywood in such a way that the number of decorative veneers is a multiple of 4 (not including 4). On the base plywood, around the center point, 4
They are arranged sequentially in sets, and in this case, in each set, the second,
The third and fourth decorative veneers are 90°, 180°, and
They may be arranged so as to be placed in order at positions rotated by 270 degrees, for example, in accordance with the arrangement order shown in FIG.

The present invention particularly avoids the inconsistency of wood grains of a plurality of decorative veneers, but the decorative veneers used may be of any type, such as teak, rheowood, rosewood, etc.

Further, in order to obtain a desired radial pattern, the shape of the decorative veneer is not particularly limited, and veneers of different sizes may be used.

FIG. 7 shows a surface pattern diagram of decorative plywood with a unified pattern according to the present invention.

As described above, the radial patterned decorative plywood of the present invention is different from the arrangement method of conventional decorative veneers,
The number of decorative veneers that is a multiple of 4 is placed in groups of 4, and the veneers are placed in point-symmetrical and line-symmetrical positions, or the veneers are placed in order.
By arranging the veneers so that they are rotated by 90 degrees, there is no deviation in the grain pattern of each veneer, resulting in decorative plywood with a uniform pattern that is beautiful to look at.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the order of pasting the kujiyaku pattern on the conventional decorative veneer, Fig. 2 is a schematic diagram of the grain pattern of the decorative plywood according to the conventional method, and Fig. 3 is the arrangement of the decorative veneer according to the present invention. An example diagram showing the order, FIG.
FIG. 5 is a sectional view taken in the direction of the arrows, where a shows the state before overlapping cutting, and FIG. 6 shows the state after overlapping cutting; FIGS. 5 and 6 are views showing other methods of arranging decorative veneers of the present invention;
FIG. 7 is a schematic diagram of the grain pattern of the decorative plywood of the present invention. A... Decorative plywood, 101... Base plywood, 102
...Decorative veneer, 103,104...Decorative veneer, 1
05... Overlapping part, 106... Contact part, 107...
...laminate.

Claims (1)

[Scope of Claims] 1. A decorative plywood formed by heat-pressing and arranging a plurality of decorative veneers on a base plywood so as to form a radial pattern spreading around a point, which is a multiple of 4 exceeding 4. A number of decorative veneers are sequentially arranged on the base plywood, and in this case, a set of four decorative veneers are arranged around the center point, with the second, second, and so that the third and fourth decorative veneers are placed in two positions, one symmetrical about the center point and the other two orthogonal axes passing through the center point, or in sets of four. Around the center point, the second, third and fourth decorative veneers are sequentially rotated by 90°, 180° and 270° with respect to the position of the first decorative veneer. Decorative plywood with a radial pattern that is arranged so that it can be placed. 2. In the method of manufacturing decorative plywood in which a plurality of decorative veneers are pasted on a base plate plywood in a radial pattern that spreads out from the point where the base board has a plurality of decorative veneers, In this case, a set of four decorative veneers are sequentially arranged on the plywood, and in this case, a set of four decorative veneers are arranged around the center point, with second, third, and fourth decorative veneers being arranged in relation to the position of the first decorative veneer. or a set of four decorative veneers is placed at the center so that the veneers are placed in two positions, one symmetrical about the center point and the other symmetrical about two orthogonal axes passing through the center point. Arrange the second, third, and fourth decorative veneers around the point so that they are sequentially placed at positions rotated by 90°, 180°, and 270° with respect to the position of the first decorative veneer. A method for manufacturing decorative plywood with a radial pattern, which comprises cutting the overlapped parts of adjacent veneers in the final array at the overlapping parts, and then hot-pressing the veneers.