JPH025168B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to the field of so-called veneer assembly technology, in which wood veneers are laminated and integrated using adhesive, and then sliced to express artificial wood grain. belong to

[Background technology] Conventionally, laminated veneers have been produced by making thin veneers from relatively low-grade logs using rotary lace, etc., and laminating them with an adhesive interposed, and then applying them to molds with uneven curved surfaces, for example. It was manufactured through a process of pinching and pressing to form a single piece into a fritsch, and then slicing to create the desired wood grain.

In the technology related to the production of laminated veneers as described above, the most important issue is how to reproduce natural wood grain, and to this end, it is necessary to improve the dyeing method of raw veneers and adjust the raw veneers. He was devising the law. However, natural wood grain has a very delicate pattern, and it has been extremely difficult to faithfully represent this pattern.

For example, it is extremely difficult to express the jaggedness of the perforations, as seen in the grain of wood such as zelkova, and there has never been a successful example of this.

[Object of the Invention] An object of the present invention is to provide a method for producing a laminated veneer for expressing the wood grain in which the perforations appearing in the wood grain are jagged.

[Disclosure of the Invention] This invention involves preparing raw material veneers with grooves of different depths formed on their surfaces, laminating them with an adhesive interposed, and clamping them between die plates to obtain frit. It is characterized in that it is then sliced.
The following description will be given with reference to drawings shown as examples.

Fig. 1 shows a perspective view of a raw material veneer used in this invention, Fig. 2 shows a pressing process using a mold plate having an uneven curved surface, and Fig. 3 shows a perspective view of a laminated veneer obtained by this invention. , Fig. 4 A and B are comparison diagrams of normal wood grain A and wood grain B obtained by this invention.

In the above figures, numerals 1 indicate grooves formed in the raw material veneer, and the depths of the grooves differ. In other words, the surface has unevenness with peaks and valleys having different heights. 2 is a raw material veneer with grooves, which has been previously bleached and dyed as required. Reference numeral 3 designates an upper die of the mold plate having an uneven curved surface, and numeral 4 indicates a lower die of the template having an uneven curved surface, which is a pressing die for making a frit. This mold is not intended to be limited to a mold plate having an uneven curved surface, but can also be used as a flat plate if necessary. 5 is a fritsch, 6 is a conduit, 7 is a pore area,
8 represents a non-porous area, and 9 represents a laminated veneer.

The number, scale, and form of the unevenness imparted to the raw material veneer are not limited in any way. In short, the design is made according to the desired appearance of the pore area of the wood grain. The method of imparting the unevenness is not limited in any way, and any method such as roll pressing or cutting may be selected arbitrarily.

Although the type of adhesive necessary to create the fritches is arbitrary, urethane resin adhesive is preferably used. This adhesive is advantageous because it can bond even if the raw material veneer has a high moisture content.

The conditions for flitting are also arbitrary. Normally, they are pressed and bonded together at room temperature. Once the fritsch is obtained, it is sliced to obtain the desired laminated veneer. Slices are usually made so that the grain is exposed.

By doing the above, the conduit portion of the resulting board becomes jagged, resulting in a pattern that approximates natural wood grain. Comparing this to the normal case,
As shown in Fig. 4, that is, as shown in A, there is no jaggedness in the chevron pattern formed by the conduit part.
On the other hand, the plate grain obtained by this invention is expressed in a jagged manner in the chevron-shaped pattern portion of the conduit portion.

[Effects of the Invention] As explained above, this invention uses a raw material veneer with grooves of different depths, so that the jaggedness that appears in the pattern of the natural pore area can be faithfully expressed. be.

[Brief explanation of drawings]

Fig. 1 shows a perspective view of a raw material veneer used in this invention, Fig. 2 shows a pressing process using a mold plate having an uneven curved surface, and Fig. 3 shows a perspective view of a laminated veneer obtained by this invention. , Fig. 4 A and B are comparison diagrams of normal wood grain A and wood grain B obtained by this invention. 1 is a groove with different depths, 2 is a raw material veneer with grooves,
3 is the upper mold of the mold plate having an uneven curved surface, 4 is the lower mold of the mold plate having an uneven curved surface, 5 is a flitch, 6 is a conduit,
7 represents a perforated area, 8 represents a non-perforated area, and 9 represents a laminated veneer.

Claims (1)

[Claims] 1. In the production of laminated veneers, veneers with grooves of different depths are used as the raw material veneers, and these are laminated with an adhesive interposed, clamped between molds, and then pressed. A method of manufacturing laminated veneer that is characterized by slicing it in the desired shape.