JPS59140007A - 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] This invention involves laminating and integrating wooden veneers using an adhesive.
It belongs to the field of so-called veneer lamination technology, in which wood grain is artificially expressed by slicing it.

[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 flitch, and then slicing to create the desired wood grain.

In the technology related to the manufacturing method of laminated veneers as described above, the most important issue is how to reproduce the 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 hole area, as seen in the grain of wood such as zelkova, and there has never been a successful example of this.

[Purpose of the Invention] An object of the present invention is to provide a method for manufacturing a laminated veneer for expressing the wood grain in which the perforation area appearing in the board grain is 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 pressing them between mold plates to obtain a flitch. Next, a description will be given with reference to the drawings shown as a special embodiment, which is characterized by slicing.

Figure 1 shows a perspective view of a raw material veneer used in this invention.
1 Figure 2 is a diagram of the pressing process using a mold plate with an uneven curved surface.
FIG. 3 is a perspective view of a laminated veneer obtained by this invention, and FIGS. 4 (a) and (b) are comparison diagrams between normal wood grain (a) and wood grain obtained by this invention (b).

In the above figures, numerals 1 are grooves provided on the raw material veneer, and each groove has a different depth. In other words, the heights of the peaks and valleys are varied, giving them different unevenness. 2 is a raw material veneer with grooves,
This has been bleached and dyed in advance as necessary. Reference numeral 3 denotes an upper mold of the mold plate having an uneven curved surface, and 4 denotes a lower mold of the mold plate having an uneven curved surface, which is a pressing die for creating a flitch. 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 flitch, 6 is a conduit, 7 is a pore area, 8 is a non-pore area,
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.

Although the type of adhesive required to create the flitch is arbitrary, a 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 flitching are also arbitrary. Normally, they are pressed and bonded together at room temperature. After obtaining the flitch, it is sliced to obtain the desired laminated veneer. Slices are usually
When the grains are made to appear, the conduit portion of the resulting grain becomes jagged, resulting in a pattern that approximates natural wood grain. Comparing this with 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, whereas the plate grain obtained by this invention is The jagged edges appear in the chevron-shaped pattern of the conduit.

[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 the drawing]

FIG. 1 shows a perspective view of a raw material veneer used in this invention,
Fig. 2 is a diagram of the pressing process using a mold plate having an uneven curved surface, Fig. 3 is a perspective view of a laminated veneer obtained by this invention, and Fig. 4 (
A) and (B) are comparison diagrams of normal wood grain (A) and wood grain obtained by this invention (B). 1 has grooves of different depths 2 has a grooved raw material veneer 3 has an uneven curved surface The upper die 4 of the die 4 has an uneven curved surface Lower die 5 of the die 5 has a flitch 6 is a conduit 7 has a hole area 8 which is not The hole area 9 represents a laminated veneer. Flute 1 Zuka 2v! J

Claims (1)

[Claims] (1) In the manufacturing method of laminated veneer, veneers with grooves of different depths are used as raw material veneers, and these are laminated with an adhesive interposed, and then pressed between molds, and then A manufacturing method for laminated veneer that is characterized by slicing so that the grain of the board is obtained.