JPH0425122B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for manufacturing an artificial wood grain decorative veneer, and more specifically to a method for manufacturing an artificial wood grain decorative veneer that looks like a natural wood grain veneer. It depends.

[Prior art and problems] In the manufacturing method of artificial wood grain decorative veneers, when trying to give the wood grain pattern a complexity similar to the appearance of natural cedar, pine, or zelkova veneers, it is necessary to In addition to considering basic techniques such as colors and their combinations, the color of the adhesive used to bond the raw veneers, the shape of the template for making the laminated fritches, and the preparation angle of the laminated fritches, A method of forming a large number of shallow and thin recesses on the surface of raw veneer to reproduce pipe grooves (Patent No. 836052), a manufacturing process of artificial wood grain decorative veneer to make the entire wood grain pattern thin and complex Method of repeating twice or more
24103), a method of partially changing the grain width of a continuous wood grain pattern (Japanese Patent Application Laid-open No. 58-51103), etc.
Various methods have been proposed.

By the way, the various methods that have been proposed so far are
All of these methods propose only basic methods for adding changes to the wood grain pattern of artificial wood grain decorative veneers, and how to use these methods in combination to reproduce the desired wood grain pattern. Studies regarding the application of this method are still insufficient, and the development of a specific method has been desired.

[Purpose of the Invention] This invention deals with the problem of wood grains that have a wide grain pattern like the grain pattern of natural wood, and which have irregularities such as cuts in some places, changes in thickness, and large curves. To provide a method for manufacturing an artificial wood-grain decorative veneer in which a relatively straight straight-grained pattern with narrow grain width appears on both sides of the pattern.

[Structure of the Invention] This invention involves stamping a large number of raw material veneers to partially change the thickness of at least one side, and applying an adhesive between a pair of kamaboko-shaped templates to the stamped veneers. The veneers laminated before and after the raw material veneer with the recess formed by laminating and press-bonding are inserted thickly into the recess.
First laminated fritches with different surface shapes of each veneer are created, prepared at a predetermined preparation angle so that the laminated fritches appear as the first surface pattern, and sequentially stripped to a constant thickness. forming a number of primary decorative veneers, stamping these decorative veneers to partially change the thickness of at least one side, and forming a pair of complementary curved veneers to these stamped decorative veneers. The veneers laminated before and after the decorative veneer, which has a concavity formed by laminating and press-bonding it with an adhesive between templates with a wood grain pattern formed into contour line irregularities, are placed in the concavity. A secondary laminated fritsch is created by inserting thickly and changing the surface shape of each veneer.
The method comprises the steps of preparing the fritchi at a predetermined preparation angle so that the adhesive layer appears as a secondary surface pattern, and then scraping it to a constant thickness; An artificial wood-grained veneer with a relatively straight straight-grain pattern with a narrow grain width on both sides of the disordered wood-grain pattern where the wood grain pattern is broken here and there, the thickness changes, and the grain is greatly curved. This is the manufacturing method.

The structure of this invention includes the following points.

The raw material veneer and the first decorative veneer are each embossed to give a partial thickness change to their surfaces.

The color of the adhesive used in the step of making the second laminated fritches is darker than the color of the adhesive used in the step of making the first laminated fritches.

In the process of creating the first laminated fritches, a pair of complementary kamaboko-shaped templates are used, and in the process of creating the second laminated fritches, a pair of templates with complementary wood grain patterns formed as contour line irregularities are used. use.

Make the first preparation angle more obtuse than the second preparation angle.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a raw material veneer 1 with recesses 2 formed by partially changing the thickness of at least one side, and even if the recesses 2 to be embossed are as shown in FIGS. 2 and 3, good. The raw material veneer 1 is a veneer with a thickness of about 0.5 to 2.0 mm with hardly noticeable wood grain pattern, and is usually dyed in a color close to the wood color of the desired wood grain pattern. In this example, the wood grain pattern is barely noticeable, with a thickness of 0.7
Raw material veneer 1 was obtained by dyeing 500 pieces of Ayuse veneer of mm in light yellowish brown and drying.

The method for forming the recess 2 in the raw material veneer 1 is as follows:
Pressing is performed using an embossing roll or template, and the depth of the recesses 2 is preferably about 0.1 to 0.5 mm, and the intervals are preferably about 2 to 10 cm.

Next, the raw material veneer 1 is glued with a colorless or pale yellow-brown adhesive as shown in Figure 4.
Approximately 500 sheets are stacked in one pile between a pair of complementary semicircle-shaped templates 3 and 3', and then pressed together to form the recess 2.
The veneers laminated before and after the raw material veneer 1 on which the veneer is formed are thickly inserted into the recess 2 and bonded while changing the surface shape of each veneer to create a veneer laminated frit 4. As the adhesive, a commonly used synthetic resin adhesive that hardens at room temperature is used, and if it is to be colored, a small amount of coloring agent is mixed in.

The conditions for creating a laminated fritsch are room temperature, 6 to 24
The amount may be in the range of 10 to 30 kg/cm ² for an hour. In this example, the above-mentioned templates are pressed and bonded using a room-temperature-curing amino resin adhesive colored light yellow-brown at room temperature for 12 hours at a pressure of 15 kg/cm ² to form a rectangular laminated frit 4. It was created.

Next, as shown in FIG. 5, the above-mentioned laminated fritches 4 are prepared at an angle θ to the surface so that the adhesive surface forms a surface pattern. The range of the preparation angle θ is 15
~20 degrees is preferred.

In this example, the material was prepared using an eversaw at a preparation angle of 17 degrees to the surface.

Next, the surface of the prepared laminated fritsch 4 was scraped to a thickness of about 0.5 to 1.0 mm to create a primary decorative veneer 5 as shown in FIG. 6. In the first decorative veneer 5, since the recesses 2 were formed in the raw material veneer 1, the adhesive layer appeared as curved straight-grained lines.

Subsequently, these primary decorative veneers 5 are embossed using an embossing roll or template to form recesses 6 as shown in FIG. 7.

In this example, the embossing was performed using the same embossing roll that was used for the first embossing.

Next, the veneers 7 with the same recesses 6 formed thereon are overlapped, and a pair of complementary pieces as shown in FIG. The wood grain pattern is laminated and pressed between templates 8 and 8', which are formed into a contour line-like uneven shape.

Since a large number of veneers 7 are stacked before and after the veneer 7 in which the recess 6 is formed, other veneers 7 are placed in the recess 6.
The surface shape of each veneer 7 is changed by thickening a part of the veneer 7, and a laminated fritch 9 having an uneven curved surface in a wood grain pattern on the upper and lower sides as shown in FIG. 9 is created.

The shape of the contour line unevenness of the templates 8, 8' is selected depending on the grain pattern to be reproduced.
In this example, 400 pieces of veneer 7 are bonded between templates 8 and 8' in which the grain pattern of zelkova is formed into a contoured uneven shape as shown in Fig. 8, using a room temperature curing adhesive colored dark brown. A secondary laminated fritch 9 having upper and lower surfaces having concavo-convex curved surfaces in a grain pattern was created by pressure-bonding using an adhesive.

Next, the laminated fritches 9 having the above-mentioned unevenness are
is prepared at an angle θ' smaller than the initial preparation angle θ with respect to the temporary surface seen from the wood end.

At this time, the desired wood grain pattern appears on the 9 sides of the prepared laminated fritches.

Thereafter, the prepared wood surface is scraped to a thickness of about 0.2 to 1.0 mm using a commonly used slicer to obtain an artificial wood grain decorative veneer with the desired grain pattern as shown in FIG.

In this example, the wood was prepared at a 12-degree angle, and a grain pattern that closely resembled the desired grain pattern of natural zelkova wood appeared on the surface of the wood.

In this invention, the process of stamping the raw material veneer 1 and the primary decorative veneer 5 to form the recesses 2 and 6 with partial thickness changes on their surfaces is the best way to achieve the desired wood grain pattern. To make it look like a natural wood board,
The purpose is to cause disturbances in the wood grain pattern and breaks in the wood grain.

Next, the reason why the color of the adhesive used in the process of creating the second laminated fritches is darker than the color of the adhesive used in the process of creating the first laminated fritches is that it is used in this lamination process. The objective is to express the adhesive color strongly as the wood grain pattern of the decorative veneer, and to express the adhesive color used in the first laminated fritch creation process as a complex color change of the wood grain pattern.

Next, in the step of creating the first laminated fritsch, semicylindrical templates 3 and 3' are used, and in the step of creating the second laminated fritsch, a pair of templates on which a pair of complementary wood grain patterns are formed in a contour line-like uneven shape is used. The reason for using the gaps 8 and 8' is that in the process of creating the first laminated fritches, fine and natural changes are imparted to the entire wood grain pattern, and in the process of creating the second laminated fritches, the desired wood grain pattern is centered. This is to form an image of the entire wood grain pattern by making the wood grain pattern into a section and having narrow straight grain pattern parts appear on both sides.

[Effects of the Invention] As described above, the present invention has the advantage that the first
A partial recess is formed in the veneer to be used in the next and second process, and the color of the adhesive, the shape of the pair of templates, the angle of the material preparation, etc. are programmed in advance, and the process is carried out according to the program. By doing so, it has a wide grain pattern in the center that is partially broken or has changed greatly, similar to the grain pattern of natural wood, and a straight grain pattern with narrow grain width on both sides. The effect is that it is possible to easily supply artificial wood grain decorative veneers that express the appearance of wood.

[Brief explanation of drawings]

FIGS. 1 to 3 are perspective views showing raw material veneers with different recesses formed therein. FIG. 4 is a conceptual perspective view showing the process of creating the first laminated flitch, and FIG. 5 is a perspective view showing the first laminated flitch and its preparation angle. Figure 6 is a plan view of an example of the first decorative veneer.
FIG. 7 is a perspective view of an example of the first decorative veneer after embossing, FIG. 8 is a conceptual perspective view showing the process of creating the second laminated frit, and FIG. 9 is a perspective view of the second laminated frit. FIG. 10 is a plan view of an example of the artificial wood grain decorative veneer according to the present invention. DESCRIPTION OF SYMBOLS 1...Raw material veneer, 2...Recess, 3, 3'...Pair of semicircular templates, 4...Primary laminated fritches, 5...First decorative veneer, 6...Recess, 7...Recess Embossed primary decorative veneer, 8, 8'... Template plate with a pair of complementary wood grain patterns formed as contour line-like unevenness, 9...
2nd laminated fritsch, 10...artificial wood grain decorative veneer,
θ...First preparation angle, θ'...Second preparation angle.

Claims (1)

[Claims] 1. A large number of raw material veneers are stamped to partially change the thickness of at least one side, and the stamped veneers are placed between a pair of kamaboko-shaped templates with an adhesive between them. The first laminated frits are made by inserting the veneers laminated before and after the raw material veneers, which have been laminated and pressed together to form concavities, into the concavities to change the surface shape of each veneer. The material is prepared at a predetermined preparation angle so that the laminated fritches appear as the primary surface pattern, and is sequentially peeled to a constant thickness to form a large number of primary decorative veneers. It is a curved board that complements these decorative veneers by stamping a board to partially change the thickness of at least one side, and between the templates with a contour line-like unevenness of the wood grain pattern. By stacking and pressing the veneers together using adhesive to form a recess, the veneers laminated before and after the decorative veneer are inserted thickly into the recesses, and the surface shape of each veneer is changed. It is characterized by the process of creating a secondary laminated fritsch, preparing the fritch at a predetermined preparation angle so that the adhesive layer appears as a secondary surface pattern, and then stripping it to a constant thickness. The grain width is wide and the grain pattern is broken in some places, the thickness changes, and the grain pattern is greatly curved and disordered.On both sides, the grain width is narrow and relatively straight grain A method for manufacturing artificial wood grain decorative veneer that shows a pattern. 2 The adhesive layer that created the first laminated fritches is the second
2. The method for producing an artificial wood grain decorative veneer according to claim 1, wherein the color of the next laminated fritchi is lighter than that of the adhesive layer from which the next laminated frit was created. 3. Any one of claims 1 to 2, characterized in that the trimming angle with respect to the upper plane of the primary lamination fritch is larger than the trimming angle with respect to the temporary upper plane of the secondary lamination fritch. A method for producing an artificial wood grain decorative veneer according to the above item. 4. The method for producing an artificial wood decorative veneer according to any one of claims 1 to 3, wherein the raw material veneer is a dyed veneer.