JPH02196602A - Production of woody decorative veneer - Google Patents

Abstract

PURPOSE:To enhance the strength of a veneer by applying an adhesive to the lumber slices, clamping and molding them to perform blocking and forming flitch and also slicing this flitch to form a sliced veneer and performing WPC treatment thereto. CONSTITUTION:Lumber slices 1 obtained by slicing lumber are treated with chemicals and then dried and thereafter flitch 2 is formed by clamping and molding the lumber slices. Sliced veneer 3 is formed by slicing this flitch 2 with a slicing blade 4 and then woody decorative veneer is formed by performing WPC treatment thereto. As reagent treatment, drying treatment, moth proofing, preservative treatment and flameproofing treatment, etc., are cited. As WPC treatment, the sliced veneer 3 is introduced into a treating pot and this pot is evacuated and resin such as polyester, acryl and melamine is introduced. After pressurization, the sliced single plate 3 is taken out from the treating pot and drawing press is performed. The veneer is semi-cured by drying. This veneer is bonded on a base material 12 such as plywood by an adhesive and above-mentioned resin is cured.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a decorative wood veneer, which is formed by splicing a flitch formed by pressure-molding a large number of thin wood pieces together with an adhesive. It is something.

[Prior Art 1] In recent years, with the diversification of building materials, there has been a demand for materials with a highly novel appearance. In particular, there is a need for decorative wood veneers that retain the warmth and gentleness of wood and have an appearance that can be adapted to modern living spaces. In order to meet this requirement, the applicant for this patent had previously filed a patent application in 1986-21.
] No. 756 was filed. Such a product is manufactured by applying an adhesive to a thin piece of wood, forming a block by pressure molding to form a flitch, and then slicing the flitch.

[Problem B to be Solved by the Invention] Although the wood decorative veneer produced as described above is extremely soft and flexible, there is a problem in that the veneer itself lacks strength.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for manufacturing a decorative wood veneer that can increase the strength of the veneer itself. The object of the present invention is to provide a method for producing a decorative wood veneer that can increase its strength without becoming wet-colored.

[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing a decorative wood veneer of the present invention includes applying an adhesive to a thin piece of wood 1 and forming a block by pressure molding to form a flitch 2. This flitch 2 is sliced to form a sliced veneer 3, and this sliced veneer 3 is subjected to WPC treatment.

It is also preferable that the sliced veneer 3 is treated with foamed WPC.

[Operation] W is applied to the sliced veneer 3 formed by slicing the flitch 2.
A wood decorative veneer with enhanced strength can be obtained by PC treatment. Further, by processing the foamed WPC, it is possible to obtain a wood decorative veneer that is strengthened so that it does not become wet-colored.

[Example 1] As shown in FIG. 1, a thin piece of wood 1 obtained by slicing wood is first treated with chemicals, then dried, and then the thin piece of wood 1 is pressed to form a flitch 2, and the flitch 2 is passed through a slicing blade 4. By slicing, a sliced veneer 3 is formed, and this sliced veneer is subjected to WPC treatment to form a wood decorative veneer. As shown in FIG.
~0.5θ-1), and the area is 6-400-ring 2 (preferably 25-250-m2)'? , aspect ratio (vertical width a/b)
is 0°4 to 7.0 (preferably 0.8 to 3.0).

These wood flakes 1 may be curled.

Further, as long as the above-mentioned shape is 60% or more, there is no problem even if objects with dimensions other than the above are mixed in. Chemical treatments include dyeing treatment, insect repellent treatment, antiseptic treatment, flame retardant treatment, etc. The dyeing process is carried out, for example, by immersing the inner basket 8 containing the wood flakes 1 in the dyeing liquid 7 in the dyeing tank 6, as shown in FIG. The adhesive is applied to the wood slices 1 by spraying or kneading. The type of adhesive is not particularly limited as long as it can be sliced after adhesion, but the following adhesives are suitable.For example, urethane adhesive, urethane emulsion adhesive, soft (elongation rate of 40% or more) ) polyester resin,
Examples include vinyl acetate adhesives. Compression molding of the wood thin piece 1 coated with adhesive is carried out using a press*tm9, but m1
As shown in the figure, a thin piece of wood 1 is placed in a container 1° and pressed with a press plate 1 to form the product. The pressure applied by this press device 9 is sufficient to crush the wood flakes 1 along the press surface, and is 2 Kg/as" to 25
Kg/am2 (preferably 7 Kg/0m2-14
K g/0m2). The flitch 2 formed by pressing with the press device 9 is sliced to form sliced veneers 3, and subjected to WPC treatment as follows to form decorative wood veneers. First, the sliced veneer 3 is dried, and the sliced veneer 3 is put into a processing pot and the pressure is reduced. Then, inject resin such as polyester, acrylic, melamine, etc.
After pressurizing, take out from the processing pot. After taking it out of the processing pot, it is squeeze-pressed and semi-cured by drying. This semi-cured sliced veneer 3 is adhered onto a base material 12 such as plywood via an adhesive, and the injected resin is cured while being adhered. In this way WPC
Through the treatment, a reinforced wood decorative veneer is obtained. Note that the sliced veneer 3 does not have any direction or grain like normal wood, so cracks are less likely to occur when it is semi-cured or pasted.

When treated with WPC as described above, the wood decorative veneer becomes wet colored, but if you want to strengthen it without making it wet colored, use foamed WP.
The zero-foaming WPC treatment with C treatment is basically the same as the WPC treatment described above, but a foamable resin is used as the resin to be injected. Further, in this case, the semi-cure step is omitted.

Next, a specific example of the method for manufacturing the decorative wood veneer of the present invention will be introduced.

(Specific Example 1) Wood flakes 1 were obtained by finely slicing Japanese pine,
Thickness h: 0.10-0.40mm, surface M12-200-
12. The main component (8
0% or more). This wood thin piece 1 was dyed with an acid dye (Suminol MillingBra).
in 3 G Sumitomo Chemical Co., Ltd. (10.1%) for 10 seconds and then dried.As an insect repellent treatment, it was immersed in an insect repellent (Bergin Mitsui Toatsu Chemical Co., Ltd. 2%) for 10 seconds and dried. Hortoxin TIG made by Keshiholz 1
%) for 10 seconds and then dried, followed by a flame retardant treatment agent (Nonne W-2-50 manufactured by Marukubi Yuka Kogyo 40) for IT combustion treatment.
%) for 10 seconds and then dried. The adhesive was applied to the wood thin piece 1 by adding 70 g of urethane adhesive (GA601-01, manufactured by Juju Bakelite Co., Ltd.) to the wood thin piece 1 treated in this way and kneading it per 100 g of the wood thin piece. A flitch 2 was created by pressing this wood thin piece 1 at a pressure of 10 kg/am2 for 1 hour, and a sliced veneer 3 was obtained by slicing this flitch 2 into a thickness of 0.50 mm.

This sliced veneer 3 was subjected to WPC treatment as follows. The sliced veneer 3 was dried to a moisture content of 6% or less, placed in a processing pot and reduced pressure at 10 mmHg for 2 hours, injected with WPC resin of the following composition, and heated at a pressure of 18 kg/e2. Pressure was applied for an hour.

After pressurizing the WPC resin, take it out of the processing pot, squeeze press it for 5 minutes at a pressure of GK1]7 cm2, semi-cure it at 120°C for 10 minutes, and paste the semi-cured sliced veneer 3 on the plywood as the base material 12. Press at 145°Cl8Kg/c
(2) Pressure was applied for 3 minutes under the conditions of 2 to bond and cure. In this way, a wood decorative veneer reinforced by WPC treatment was obtained.

(Specific Example 2) The process from forming the sliced veneer 3 to drying the sliced veneer 3 is the same as the above-described specific example 1, and after drying, the foamed WPC treatment is performed as follows. The dried sliced veneer was placed in a processing pot, the pressure was reduced to 4 msHg for 2 hours, and T-833 (Sanshi Kako SL) was injected as a resin for foamed WPC.
Pressure was applied at Kg/cs+2 for 1 hour, and squeeze-pressed for 5 minutes at a pressure of 6Kg/c2, and the sliced veneer 3 was pasted on the plywood as the base material 12, under the conditions of 135°C and 8Kg/c2. The adhesive was bonded under pressure for 8 minutes and cured. In this way, a wood decorative veneer which was strengthened by the foamed WPC treatment and which did not become wet-colored was obtained.

[Effects of the Invention] As described above, the present invention applies adhesive to thin pieces of wood and press-forms them into blocks to form flitches, and the flitches are sliced to form sliced veneers. Not only can you obtain wood-formed veneer with an appearance that is suitable for modern living spaces, but since the sliced veneer is treated with WPC, the flexible sliced veneer is strengthened and strengthened. It is possible to obtain a decorative wood veneer with a certain amount of wood. In addition, according to the second aspect of the present invention, since the sliced veneer is treated with foamed WPC, it is possible to obtain a wood decorative veneer that is strengthened and has an appearance that does not become the color of an IL tag, and can be used as an interior material in a wide range of areas. You can get wood veneer finished in use as etc.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the manufacturing process of an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the same wood flakes, where 1 is a wood flake, 2 is a flitch, and 3 is a sliced veneer. . Agent Patent Attorney Ishi 1) Ai Shichi

Claims (1)

[Scope of Claims] [1] A thin piece of wood is coated with adhesive and compressed into blocks to form a flitch, and the flitch is sliced to form a sliced veneer, and this sliced veneer is coated with W.
A method for manufacturing decorative wood veneer, characterized by subjecting it to PC treatment. [2] Apply adhesive to thin pieces of wood and press-form them into blocks to form flitches, slice the flitches to form sliced veneers, and apply foamed WPC treatment to these sliced veneers. Features: A manufacturing method for decorative wood veneers.