JPS5843005B2 - Decorative veneer manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a decorative veneer with a ring-hole appearance.

In the host stone represented by Geya λ, the summer wood part is made up of large diameter ducts (large ducts), and the spring wood part is made up of small diameter ducts (small ducts).

As shown in Figure 1, on the surface of a natural wood veneer with a grain pattern obtained from such ring-hole material, there are many shallow and short grooves 1 caused by large conduits at the boundaries of annual rings ( It appears along the fiber direction in the summer wood part) 2 and constitutes the holes 3.

Note that 4 is the spring wood part. In addition, many shallow and long grooves caused by large conduits appear along the fiber direction on the surface of the straight-grained natural wood veneer (not shown) obtained using the above-mentioned ring-hole material. There is.

By the way, artificial precious wood veneers (decorative veneers) similar to such ring-hole-like natural precious wood veneers have been manufactured in the following manner.

That is, a sliced veneer is made by slicing a piece of wood in which large ducts are densely distributed, and as shown in FIG. A set of two plates 6 is stacked alternately, and these are pressed together using formworks 7 and 8 whose suppressing surfaces are curved as shown in the figure, and then laminated and bonded to form a structure as shown in FIG. 3. A decorative veneer with a grain pattern as shown in Fig. 1 is manufactured by making a flitch 9 with a similar shape and slicing it almost parallel to the laminated surface of the flitch 9 as shown by arrow A in Fig. 3. was.

Further, a straight-grain decorative veneer (not shown) was manufactured by slicing the flitch 9 perpendicular to the laminated surface and parallel to the fiber direction.

In these cases, in order to expose the holes on the surface of the veneer, the sliced veneer 5 used must be laid with a straight grain (otherwise, the grooves caused by the conduit will be formed on the surface of the veneer). However, when attempting to obtain this veneer 5 by slicing, there was a problem in that the yield was extremely poor.

Furthermore, instead of the sliced veneer 5, a rotary veneer (always straight-grained) obtained by cutting a piece of wood in which large conduits are densely distributed using a rotary lace has also been used.

However, when cutting wood with densely distributed large conduits using a rotary race, unlike when cutting by slicing, it is not possible to reduce the thickness of the wood, resulting in a rotary veneer.

Therefore, it becomes difficult to bend the rotary veneer when fritting the flitch, and when slicing the flitch to obtain a decorative veneer, the decorative veneer formed by the thick rotary veneer becomes difficult to bend. The width between the holes was thicker than that of natural veneers, making the resulting decorative veneer look unnatural.

This invention was made in view of these five circumstances. A rotary veneer is made by cutting wood in which large-diameter conduits are densely distributed, and the rotary veneer is aligned in the direction in which the conduits run. A plurality of rotary veneers are stacked together using adhesive, and this laminate is pressed to create a first flitch, and this first flitch is sliced along the direction in which the rotary veneer conduit runs to create thin slices of the rotary veneer. A veneer is made, and this sliced veneer is combined with a material veneer in which small-diameter conduits are roughly distributed in a predetermined ratio, coated with adhesive, stacked, and this laminate is pressed together. By creating a second flitch and slicing this second flitch, a decorative veneer with a ring-hole appearance is obtained.

That is, in this invention, a plurality of thick rotary veneers obtained by a conventional method are laminated and bonded to form a flitch, which is then sliced to create a thin, straight-grain sliced veneer. Since the decorative veneer with a ring-hole appearance is manufactured using veneers, the decorative veneer is easy to manufacture, and the manufactured decorative veneer has an extremely natural feel.

Next, the present invention will be explained in detail.

Examples of woods in which large conduits are densely distributed include white serraya, elima, chameleon realmon, and light red meranti.The process of cutting these woods to obtain rotary veneers is usually carried out by The process is used as is.

In addition, examples of material veneers in which conduits with small diameters are roughly distributed include those cut from wood such as agathis, china, lamina labra, white china, and silk rag.

A plurality of such rotary veneers are stacked with adhesive so that the running direction of the conduit is aligned, and this laminate is pressed to create a first flitch, as shown in Fig. 4. The flitch 10 is sliced in the direction of arrow B along the running direction of the conduit 11a of the rotary veneer 11 to create a thin sliced veneer 12, and the sliced veneer 12 and the small diameter conduit are in a rough state. Distributed material veneer (not shown)
Combine them in a predetermined ratio, apply adhesive and overlap them,
By pressing this laminate to create a second flitch and slicing this second flitch, a decorative veneer with a ring-hole appearance can be obtained.

In this case, by adjusting the direction of slicing the second flitch, it is possible to obtain a plate grain as shown in FIG. 1, or a straight grain.

As described above, according to the present invention, the ring-hole material-like
A decorative veneer with a natural feel can be easily produced.

Further, by adjusting the thickness of the sliced veneer and the combination ratio of the sliced veneer and the raw veneer, the ratio of the perforated portion to the other portions can be adjusted as desired.

Furthermore, since the sliced veneer is impregnated with adhesive and has a high strength, it is easy to handle, and therefore the work of laminating the sliced veneer and the material veneer is facilitated.

Additionally, if a foam adhesive is used to obtain the first and second flitches, it will enter the conduit of the veneer while retaining air bubbles, making it more similar to the natural perforated area. A decorative veneer with a circular hole-like appearance is obtained.

Next, examples will be described.

Example 1 (Manufacture of sliced veneer) A white Seraya rotary veneer with a thickness of 1.0 mm was dyed under the following conditions.

Dye: Cinnafast Yellow 2RL (manufactured by Mitsui Toatsu Co., Ltd.): 0.1% (based on weight, the same applies hereinafter) Raniil Yellow G Extra Conc (manufactured by Sumitomo Chemical Co., Ltd.): 0.1
% Bath ratio: 25 Dyeing temperature: 100°C Dyeing time Near time Apply colorless urethane adhesive (Takenate XAW 177, manufactured by Narita Pharmaceutical Co., Ltd.) to this dyed veneer at 100'ff/r.
ri", then stack multiple sheets with the conduit running direction aligned, and sandwich them between a pair of upper and lower flat forms.
A flitch was created by pressing with crA pressure.

Next, this flitch was sliced along the fiber direction to obtain a sliced veneer with a thickness of 0.3 mm.

(Manufacture of decorative veneer) A 10-inch thick Labra rotary veneer was used as the material veneer, and it was dyed under the following conditions.

Dye: Cinnafast Yellow 2RL: 0.075% Raniil Yellow G Extra Conch: 0.10
0% Bath ratio: 40 Dyeing temperature: 100°C Dyeing time: 5 hours This dyed veneer and the sliced veneer are coated with the above urethane adhesive and laminated alternately. A flitch 9 as shown in Fig. 3 is made by sandwiching it between a pair of formworks 7 and 8, each having a curved pressing surface as shown in the figure, and compressing it with a pressure of 10 kg/cm. The flitch 9 was sliced approximately parallel to the laminated surface of the flitch 9 to a thickness of 0.2 mm in the direction of arrow A in FIG. 3 to obtain a circular-hole-like decorative board as shown in FIG.

This grained decorative board was adhered to plywood using a rubber adhesive, and the surface was polished and painted to obtain a decorative plywood.

Example 2 Thickness LOmr as a rotary veneer for manufacturing sliced veneers
An nO force merere rotary veneer was used and stained under the following conditions.

Dye Niranyl Yellow G Extra Conch: 0
．． 15% Dyeing temperature: 100° C. Dyeing time: 4 hours The subsequent steps were the same as in Example 1 to obtain a decorative plate with a ring-hole appearance.

Then, using this, a decorative plywood was produced in the same manner as in Example 1.

Example 3 (Manufacture of sliced veneer) A 1.5 mm thick erima rotary veneer was dyed under the following conditions.

Dye Niranyl Yellow G Extra Conc 0.
1% methanol aqueous solution (methanol 70%) Dyeing temperature: 85°C Dyeing time: 1 hour The moisture content of this dyed veneer was adjusted to 14%, and then applied with Elijah-vinyl acetate adhesive (manufactured by Sumitomo Bake Co., Ltd.). , U.A.
104: 10 parts and VA24070: 3 parts) was applied at a rate of 120 P/m, and a plurality of sheets were laminated with the running directions of the conduits aligned.

Next, this was sandwiched between a pair of upper and lower flat molds to form 12♂/ct.
A flitch was created by pressing at a pressure of rt.

Next, this flitch was sliced along the fiber direction to obtain a sliced veneer with a thickness of 0.3 mm.

(Manufacture of decorative veneer) A Labra rotary veneer with a thickness of 0.8 plate was used as the material veneer, and this was dyed under the following conditions.

Dye: Cinnafast Yellow 2RL: 0.1% Raniil Yellow G Extra Conc: 0.1% Dyeing temperature: 100°C Dyeing time: 4 hours The moisture content of this dyed veneer was adjusted to 20%, and then this Apply 200% of the above Area vinyl acetate adhesive to the dyed veneer and the sliced veneer above. /m and laminated alternately, and this laminate was sandwiched between a pair of formworks 7 and 8 with curved suppression surfaces as shown in Fig. 2 to form 12 kg/m.
A flitch 9 as shown in Fig. 3 is made by pressing with a pressure of crit, and the flitch 9 is parallel to the laminated surface of the flitch 9 by 0.4 mm as shown by arrow A in Fig. 3.
It was sliced thickly to obtain a circular-pored decorative board as shown in FIG.

This grained decorative board was adhered to plywood using a rubber adhesive, and the surface was polished and painted to obtain a decorative plywood.

[Brief explanation of drawings]

Fig. 1 is a plan view of a circular-pored decorative board, Figs. 2 and 3 are explanatory diagrams of the manufacturing process of a conventional example, and Fig. 4 is a plan view of a sliced veneer used in an embodiment of the present invention. It is a manufacturing explanatory diagram. 10...First flitch, 11...Rotary veneer, 11a...Conduit, 12...
・Slice veneer.

Claims (1)

[Claims] 1 A rotary veneer is made by cutting a piece of wood in which large-diameter conduits are densely distributed, and multiple rotary veneers are layered with adhesive, with the conduits running in the same direction, and this laminate is pressed. The first 7 flitches are sliced along the running direction of the rotary veneer conduit to create a thin sliced veneer, and this sliced veneer is combined with a small diameter flitch. A second flitch is created by combining a material veneer in which conduits are roughly distributed in a predetermined ratio, applying adhesive and stacking them together, and pressing this laminate together to create a second flitch. A method for producing a decorative veneer, which is characterized by obtaining a decorative veneer by slicing.