JPS5894403A - Manufacture of aggregate decorative veneer - 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] [Object of the Invention] An object of the invention is to provide a method for manufacturing a laminated decorative veneer that can eliminate poor adhesion due to uneven pressure.

[Background technology]

The conventionally known manufacturing method for laminated decorative veneers involves laminating the veneers with an adhesive, sandwiching them between molds consisting of a pair of concave and convex shapes with a certain curvature, and pressing them together to form a flitch. It consists of obtaining ξ and slicing ξ.

FIG. 1 is a schematic diagram showing an example thereof, and 1 is an upper mold having a downwardly convex mold surface. 2 is a lower mold and has a concave surface. When a veneer is sandwiched and pressed between the upper and lower pair of mold plates, the pressure is high at the end (A1 part) and low at the central part (111 part) as shown in the figure. This is because the pressure applied to the part is supported. If such unevenness of pressure occurs, the problem arises that the part 11 is insufficiently pressed and has poor adhesion.

In addition, pressure was easily applied (in the II! section, the veneer was destroyed, making it impossible to obtain a high-quality decorative veneer).

[Disclosure of the invention]

In the present invention, a material with a small Young's modulus is arranged in the part of the veneer that corresponds to the part where pressure is easily applied, and a material with a large Young's modulus is arranged in the part of the veneer which corresponds to the part where pressure is not easily applied. This method is characterized by the use of veneers made by joining two pieces together, and will be described in detail below. As explained based on Fig. 1, pressure is easily applied to the inside of the plate and mold plate (~), so
In the present invention, the veneer placed in this part has a small Young's modulus (the veneer located in the B1 part is a veneer with a large Young's modulus. In other words, veneers with such properties are connected Together, they are used as a single veneer.

FIG. 2 is a perspective view showing a veneer formed from the above perspective. In this figure, the outer (A1 part) is made of a material with a small Young's modulus, and the central (B1 part) is made of a material with a large Young's modulus. An example of how the boards are arranged is shown.Depending on the shape of the template, this arrangement may not be possible.To make such a connected veneer, for example, it is necessary to It is made by sewing boards together with thread in a patchwork manner.Alternatively, it can be made by gluing square pieces of wood together in advance and slicing them.

The magnitude of Young's modulus is a relative issue and varies depending on the production area, moisture content, and thickness of the material, so it should be adjusted according to the actual situation.

〔Example〕

Example 1 Figure 2 (~ section) The veneer from Papayato (compressive Young's modulus 250-4001, moisture content 45%, board thickness 1.01
) from Halmahera (compressive Young's modulus 100-250) as a veneer corresponding to the part (B) in Figure 2.
4/d, moisture content 45%, board thickness 1.0 m) agathis (South Sea wood) was used and connected by patchwork to form a single veneer. Thereafter, flitches were obtained by laminating and pressing according to a conventional method, and decorative veneers were obtained by slicing.

Example 2 Figure 2 (Agathis (from Papayato) as a veneer corresponding to ~ section
veneer with a moisture content of 45% (compressive Young's modulus 150-400
1, plate thickness 1.0 yen), (as a veneer corresponding to the Bj part,
The same agathis veneer with a moisture content of 25% (compressive Young's modulus of 4
00 to 60014/d, board thickness 1.0 square meters) were used, connected by patchwork to form a single veneer, laminated and pressed and sliced in a conventional manner to obtain a decorative veneer.

Example 3 Agatis (Papaya) II as a veneer corresponding to the fourth part in Figure 2
) with a moisture content of 45% and a board thickness of 0.8 mm (compressive Young's modulus 100 to 250 */d ) is used as the same Agatis veneer as the veneer corresponding to the section (B) with a moisture content of 45% and a board thickness of 1 .0- veneer (compressive Young's modulus 250-400 exposure 4D) was made into one veneer as described above, laminated, pressed and sliced using the usual G method to make a decorative veneer. Obtained.

The decorative veneers obtained in each of the above examples were of good quality, with no adhesion failure in the center and no veneer breakage at the edges.

〔Effect of the invention〕

In the present invention, a material with a small Young's modulus is arranged in the part of the veneer that corresponds to the part where pressure is easily applied, and a material with a large Young's modulus is arranged in the part of the veneer which corresponds to the part where pressure is not easily applied. Since this method uses veneers made of wood, the pressing pressure is uniform and a decorative veneer with no adhesion defects can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the pressing process of veneers, and FIG. 2 is a perspective view of a veneer obtained by connecting veneers with a high Young's modulus by patchwork. （＾）・・・・・・－・Direction where pressure is easily applied...
...Partial patent applicant who is less pressured Toshimaru Takemoto (and 2 other people) Patent attorney representing Matsushita Electric Works Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] (1) Laminated decorative veneers are manufactured by laminating veneers with adhesive interposed, sandwiching them between a pair of concave and convex templates with a certain curvature, pressing them together to form flitches, and slicing them. In the method of A method for producing laminated decorative veneer, which is characterized by using a veneer made by arranging and connecting objects.