JPS6194701A - Manufacture of grooved wood masaio pattern building materialhaving thick external appearance - 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 Field of Industrial Application This invention relates to a method for producing parquet pattern building materials used for flooring, walling, etc.

Conventional techniques and their problems Traditionally, parquet pattern building materials used for flooring, etc., have been most widely used (for example, in the case of The flooring material used is a thin decorative veneer made of precious wood manufactured using so-called lamination technology and adhered to a base plate such as plywood.In other words, the flooring material is made of wood cut from raw wood with a moisture content above the fiber saturation point. After combining 7 rich sheets in a wet state with a certain ratio in a manner to obtain the desired marquetry pattern and adhering them via an adhesive capable of adhering to a wet surface, this is left in the above-mentioned wet state in a direction in which a cross-section of the laminate can be obtained. It is manufactured by slicing thinly with a slicer to create a thin decorative veneer with a marquetry pattern, pasting this on a base plate, and then applying finishing processes such as painting.

However, although the above-mentioned parquet pattern building materials have a beautiful parquet pattern on the surface, the decorative surface of the surface that shows the pattern is completely flat, so there is no three-dimensional appearance in the appearance. Of course, on the surface? I couldn't deny that it was easy to get the impression that it was a product with a decorative veneer attached to it, so to speak, and that it looked cheap.

In order to improve this appearance problem, it is necessary to create a V-shaped or U-shaped groove on the surface to create a three-dimensional effect, as has been done on many building materials. Naturally, this will be taken into account. However, in practice, when using a machine to carve grooves on the surface of building materials, it is only possible to easily carve grooves in a continuous straight line in a predetermined direction; It is extremely difficult to add grooves to complex shapes or patterns. In addition, even if a lot of effort is taken to create grooves, the cut surfaces of the plywood will be directly exposed from both sides of the grooves to the bottom, which will make the thickness of the decorative veneer visible. However, it is difficult to eliminate the fact that the thinness of the material is easily recognized, and it takes a lot of effort to finish the inside of the groove. Parquet pattern building materials are not suitable for industrial production.

For this reason, very high-grade parquet pattern building materials, especially those used as flooring materials, are made from thick veneer pieces cut to a predetermined thickness and shape, and the upper peripheral edges are beveled diagonally in advance. After that, these thick veneer pieces are manually arranged and glued on the baseboard in an arrangement that gives the desired parquet pattern, thereby creating a surface of the joint part of each thick veneer piece while maintaining the parquet pattern. Approximately V with the above chamfered part
A small number of products with a character-shaped groove have been manufactured and provided. Parquet pattern building materials, especially flooring materials, are made of thick veneer like this.
In addition to the beauty of the marquetry pattern, the thick veneer itself is exposed on the inner surface of the groove, creating a rich three-dimensional feel and emphasizing the feel of thick or solid wood, giving it a true sense of luxury. It is something that you have.

However, as is clear from the above-mentioned manufacturing method, building materials with a marquetry pattern made by arranging thick veneer pieces have disadvantages such as the material cost, manufacturing effort, and production efficiency of decorative thick veneer made of expensive precious wood. The inherent drawback is that it involves many problems and is extremely expensive.

In view of the above-mentioned prior art, the present invention uses a decorative veneer with an extremely thin parquet pattern, has grooves such as a V-shaped cross section in the required pattern including the joint part, and has a decorative veneer with a V-shaped cross section. The purpose of this invention is to provide a manufacturing method with excellent industrial productivity for building materials with a parquet pattern that can give a thick appearance to the surface.

Means for Solving the Problems For the above-mentioned purpose, the present invention is to process the grooves on the surface of parquet-patterned building materials using embossing technology, and to apply this to thin parquet-patterned materials using lamination technology. By using it in combination with the manufacturing technology of decorative veneer,
The intended purpose was achieved.・In other words, this invention includes the steps of: obtaining a decorative veneer with a marquetry pattern by laminating and adhering flitches and then slicing the flitch thinly in the direction in which the laminated cross section is obtained; and pasting the decorative veneer onto a base plate. , by cutting the decorative veneer along a predetermined groove forming pattern including the flitch joining line of the decorative veneer to a depth equal to or greater than the thickness of the decorative veneer with a pressing cutting blade having a cutting edge portion having a 7-shaped cross section; The gist of the present invention is a method for manufacturing a grooved parquet pattern building material having a thick appearance, which includes as an essential step an embossing step of forming grooves with a V-shaped cross section on the surface.

EXAMPLES Hereinafter, the present invention will be further explained in detail based on illustrated examples.

In carrying out the present invention, first, a thin decorative veneer having a marquetry pattern is produced by the conventionally known so-called lamination technique as described above. That is, as shown in Fig. 1, a plurality of unit flitches (1) (2) obtained by cutting wood from logs
(3) Preferably, all of them are kept in a wet state with a water content higher than the fiber saturation point, and then bonded with an adhesive capable of wet surface adhesion such as a polyurethane adhesive, and then compressed. The laminated block (5) is bonded and integrated, and after maintaining the above-mentioned wet state or adjusting the moisture content to above the fiber saturation point, the flitch (1) < 2) is formed as shown in Figure 2. (3) Cut thinly with a slicer in the direction to obtain the laminated cross section of... to the required thickness, e.g. 0°2-
0.8InIn, R is also generally manufactured into a decorative veneer (4) having a parquet pattern of about 0.3 to 0.5.

Next, this decorative veneer (4) is pasted onto a desired base plate (6) as shown in FIG. The base plate (6) used here is selected appropriately depending on the purpose of the building material, but generally, it is plywood, MDF, particle board, fiberboard, etc. with a thickness of 2.5 to 15 degrees and a culmness of 2.5 to 15 degrees. is used. If the building material is used as a flooring material, the base plate (
6) A cushioning material such as a sponge board or an intertwined fiber sheet may be attached to the back surface of the material. As the adhesive used for adhesion to the plywood (6), a heat-resistant adhesive that can withstand heat-pressure bonding operations, such as a urea resin adhesive or a vinyl acetate resin adhesive, is preferably used.

Next, an embossing process is carried out, and the surface of the decorative veneer (4) and the base plate (6) are formed along the required groove forming pattern including the flitch joining line (4a) in the decorative veneer (4). Add grooves.

The embossing jig (7) used here is as shown in Figure 4.
A push-cutting blade (9) is fixed to one side of a disk-shaped tool rest (8) made of wood or metal in a protruding manner along the pattern. As shown in FIG. 5, the pressing cutting blade (9) has a thickness (t) = 0.5 to 2.5 mm and a protrusion height (h), for example.
= 10 to 30M strip steel, cutting edge angle (θ) = 45
A blade having a V-shaped cutting edge (9a) with a cross section of about 110 degrees is used. Above thickness 1) and cutting edge (9a)
The cutting edge angle (θ) is the main factor that controls the condition of the groove formed, along with the depth of cut described below.
This is important in this respect. According to the inventor's many experimental results, the thickness 1) of the pressing cutting blade (9) is 0.8 to 1.
．． O#III+, the best results are obtained when the cutting edge angle (θ) is set to about 45 to 50 degrees.

In the embossing process, the embossing jig (7) is set on the surface plate with the mounting surface of the press cutting blade (9) facing up using a press machine generally called the Thomson type, and then the decorative veneer ( 4) Hold the base plate (6) with its decorative side facing downward, and place the 7-rich joining line (4a) of the decorative veneer (4) on the press cutting blade (9) as shown in Figure 6 (a). Place the corresponding parts so that they match perfectly, operate the press, and cut the decorative veneer (4) with the pressing blade (9) as shown in Figure 6 (b).
Cut to a specified depth that exceeds the thickness. This cutting depth d> is determined by the condition of the groove to be formed and the pressing cutting edge (
Although it is appropriately selected in relation to the specifications of 9), it is generally set to (d)=1.0 to 3.0 mm.

This cutting depth can be easily and reliably regulated by interposing a spacer made of hard rubber or the like on the embossing jig (7). In addition, it absorbs the thickness unevenness of the workpiece material, and the adhesion phenomenon caused by the cutting edge part (9a) biting into the workpiece material makes it difficult for the workpiece material to separate from the embossing jig (7) immediately after embossing. In order to prevent this phenomenon from occurring, it is preferable to place a cushioning material such as a sponge on the jig (7) in advance, and compress it between the jig (7) and the workpiece during pressing.

The press time for embossing is generally about 1 to 5 minutes, and the press pressure is 5 to 10 Ky/ad.

It is common to set it to a certain degree.

Further, it is preferable to heat the pressing cutting blade (9) in advance during the embossing press. That is, the pre-pressed cutting blade (9)
By heating the material to about 100 to 250° C. and then pressing it, a good molding condition can be obtained, and the material to be processed can be easily separated from the pressing cutting blade (9) after pressing. In addition, when preheating the pressing cutting blade (9) in this way, it goes without saying that the pressing cutting blade (9) should be designed in consideration of its thermal expansion.

After the above embossing press, remove the pressure from the press and press the embossing blade (9
) is removed from the workpiece, as shown in Fig. 6 (c), the cutting groove is cut by the pressing cutting blade (9) due to the elastic restoring force derived from the materials of the decorative veneer (4) and the base plate (6). narrows at the bottom of the groove, but remains in a plastically deformed state at the surface as a groove (10) with a substantially V-shaped cross section.

Moreover, as shown in Fig. 8, most of the both side surfaces of this groove (10) are formed by folding m1 of the decorative veneer (4) (4b).
It is covered with , and both edges of the upper part are curved in an arc shape. Therefore, due to the folded portion (4b), the decorative veneer (4) has an appearance as if it were a thick veneer with a thickness equal to or greater than the depth of the groove (10). Despite the presence of the groove (10), the surface condition is such that, due to the curvature of both upper side edges, it has a feel and appearance as if a decorative veneer with no square edges and a rounded chamfer was used. becomes.

By the way, the grooving process by the above-described embossing process does not necessarily need to be performed along all of the flitch joining lines (4a).

If necessary, 7 rich joints 1 (
48) may be left ungrooved (10).Conversely, the grooves are not necessarily applied only to the portion along the flitch joining line (4a). However, as shown in the part of the flitch (3) in the illustrated embodiment, @(fOa) may be formed in any shape within a seamless part consisting of a single flitch.

After the above-mentioned embossing process, the plate material is subjected to the necessary actual processing on the peripheral side of the base plate (6), and the convex shape (11) for joining and the concave groove (
12), and if necessary, the surface can be sanded, colored, or clear coated to create a final product such as a flooring material. In addition, in order to finish the surface flat without impairing the appearance of the thick material, the groove (10) portion may be backfilled with a transparent filler or paint.

By the way, the process of adhering the decorative veneer (4) to the plywood (6) may be carried out in two stages, before and after the embossing process. That is, the decorative veneer (4) is prepared in advance with a thickness of 1 to 3
It may be attached to a primary base plate made of HR grade plywood or the like, and after the embossing process is completed, this primary base plate may be attached to a secondary base plate of a required thickness that will serve as a strength member.

In addition, in the illustrated embodiment, in order to facilitate understanding of the gist of the present invention, a case has been described in which a parquet-pattern building material made of only one unit, such as a square lumber, is manufactured. As shown in the figure, the present invention is similarly applicable to the case where the construction material is manufactured as a strip-shaped building material measuring 1 shaku x 6 shaku. In this case, each unit of parquet pattern decorative veneer (
4) After arranging (4) in advance in a predetermined arrangement on a single base plate and gluing them, the whole is stamped all at once to form grooves (10) in a desired pattern. In either case, a V-shaped groove (
The chamfered portion in the half state of 10) is formed simultaneously during the embossing process or afterwards, so that when the building materials are arranged side by side, a groove having a substantially V-shaped cross section is also formed at the joint. It is preferable that the

Effects of the Invention As described above, this invention is manufactured by pasting a decorative veneer with a marquetry pattern on a base plate, and therefore it is not only possible to express a beautiful marquetry pattern on the surface. First, the grooves are grooved in a roughly V-shaped cross section along the required pattern, including the flitch joint line that is the boundary line of the parquet, so it has a beautiful design that gives it a three-dimensional appearance. Becomes excellent in sex. Moreover, since the above-mentioned grooving is performed by the embossing process as described above, it is not only possible to create linear grooving, but also to
In response to a complicated parquet pattern, it is also possible to extremely easily create grooves in a complicated shape along the joint portion. Therefore, it is possible to easily produce a building material having a full and complicated parquet pattern, which has been difficult in the past, and has high suitability for industrial production.

Furthermore, since the grooves are formed by embossing, the base plate is hardly exposed at the bottom of the groove, and both sides of the groove are covered with folded parts of the decorative veneer, so while using a thin decorative veneer, It looks as if thick decorative veneer or decorative pieces were used, giving it a luxurious feel. Therefore, conversely, it is possible to use extremely thin decorative veneer while expressing the appearance of such a thick material, thereby minimizing the material cost of decorative materials made from expensive precious woods. Coupled with the savings and the simplicity of the manufacturing process, it becomes possible to provide building materials with a high-class image at extremely low prices. Furthermore, since the upper edge of the V-shaped groove on the surface is formed into a curved shape by embossing, it has various truly beneficial effects such as providing an excellent feel to the soles of the feet when used as flooring material. It is effective.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing the laminated state of flitches, FIG. 2 is a perspective view showing the state in which decorative veneer is sliced from a laminated block, and FIG. 3 is a perspective view showing the state in which decorative veneer is sliced from a laminated block. Fig. 4 is a perspective view showing the state in which the plate is attached to the base plate, Fig. 4 is a perspective view of the embossing jig used in the embossing process, seen from the direction of the surface where the pressing cutting blade exists, and Fig. 5 shows the shape of the pressing cutting blade. A sectional view showing,
Figures 6 (a), (b), and (c) are cross-sectional views sequentially showing the progress of the embossing process, Figure 7 is a perspective view showing an example of a product with a grooved parquet pattern building material, and Figure 8 Figure 7■-■
The enlarged line sectional views, FIGS. 9 and 10 are plan views illustrating various types of grooved parquet pattern building materials as products. <1) (2> (3) Flitch, (4) Decorative deck, (4a) Flitch joining line, (5) Laminated block, (6) Base plate , (7)... embossing jig, (9)... pushing cutting blade, (9a)... cutting edge part, (1
0)...Groove. Above Figure 3 Figure 4 Figure 5 (a) (b)
(c) Figure 9 Figure 7 Figure 8

Claims (1)

[Claims] A step of laminating and adhering the flitch and then slicing it thinly in the direction to obtain the laminated cross section to obtain a decorative veneer with a marquetry pattern, a step of pasting the decorative veneer on a base plate, and a step of adhering the decorative veneer to the base plate, By cutting the decorative veneer to a depth equal to or greater than the thickness of the decorative veneer with a cutting blade having a cutting edge having a V-shaped cross-section along a predetermined groove forming pattern including the joining line, a substantially V-shaped cross-section is formed on the surface. 1. A method for producing a grooved parquet pattern building material having a thick appearance, the method comprising the step of embossing to form grooves as an essential step.