JPS6052306A - Manufacture of aggregate 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] [Technical field] It belongs to the field of wood veneer lamination technology.

[Background technology] Conventionally, when artificially expressing wood grain using veneer lamination technology, for example, wood veneers colored in spring wood color are flitched using adhesive colored in summer wood color, and then sliced. It was manufactured by

However, with these methods, it is difficult to control the penetration of colored adhesive into the interior of the veneer, and as a result, it is difficult to express the wood grain with subtle color changes at the interface between spring wood and summer wood. I couldn't do it. Also, the wood grain may become unnaturally distorted.
It was difficult to express the grain of natural wood.

[Purpose of the Invention] This invention aims to improve the wood grain in which the spring wood part and the summer wood part have the same color tone and the interface has a subtle color change, as seen in most natural precious woods. It is characterized by being expressed in laminated veneer.

[Disclosure of the Invention] To achieve the above-mentioned purpose, the present invention first creates a composite veneer by combining a veneer to be used as a spring material and a so-called base material. Here, the base material is a sheet-like material such as nonwoven fabric or paper, and is preferably one that has better dyeability than a veneer.

An adhesive is used when combining the materials, and although there are no restrictions on the adhesive, urethane adhesives are preferred from the viewpoint of adhesive strength.

The composite veneer obtained as described above is dyed. When this composite material consisting of a base material and a veneer with different dyeability is dyed in the same dyeing bath, the base material is dyed more deeply than the veneer. And by using the adhesive at the composite interface, it became possible to express subtle color changes at the interface between the spring and summer wood parts of the resulting laminated veneer.

A laminated veneer is manufactured by laminating a plurality of the above composite veneers by a conventional method.

For the techniques necessary for manufacturing laminated veneers other than those mentioned above, it is sufficient to employ known techniques.

Next, a description will be given based on an example.

Example 1 The implementation steps are shown below.

■ Agatis decolorized veneer grain (Otori Atsushi) and impregnated paper (0°3ml
(thickness) with commercially available urethane adhesive to create a composite veneer.

■ The composite veneer of ■ was toned to the natural pine tone using a commercially available dye. Dyeing in a dye bath.

Create a flitch by laminating multiple composite veneers of ■ ■.
A laminated veneer was obtained by slicing.

When evaluating the laminated veneer obtained above, it was found that the impregnated paper was dyed darker (dyed) than the veneer, closely resembling the summer wood of pine, and as a whole, a subtle color change was expressed at the interface of the wood grain, making it a natural wood. A laminated veneer closely resembling was obtained.

Example 2 A similar effect was obtained when a nonwoven fabric (made of nylon, polyester, or pulp fiber) was used instead of the base material (2) of Example 1.

Example 3 Similar effects were obtained by using a vinyl acetate resin adhesive in place of the urethane adhesive in Example 1.

[Effects of the Invention] This invention is characterized in that, in the production of laminated veneers, a raw material veneer and a base material are combined to create a composite veneer, and this is dyed in the same dyeing bath. We were able to express subtle color changes at the grain interface between the spring wood and summer wood of the laminated veneer.

In addition, it became possible to color the spring wood part and the summer wood part at the same time during dyeing, and it was also possible to achieve labor saving in the process.

Patent applicant Matsushita Electric Works Co., Ltd. Representative Patent Attorney Toshimaru Takemoto (and 2 others)

Claims (1)

[Claims] (1) A method for manufacturing a laminated veneer, which is characterized in that a raw veneer and a base material are combined to create a composite veneer, and then this is dyed in the same dyeing bath.