JPH041B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board in which a plurality of thin wooden boards are integrated in an array on a substrate by injecting and solidifying a synthetic resin liquid.
Specifically, this is a method for manufacturing a decorative board using a thin veneer such as a sliced veneer with a thickness of 0.8 mm or less as a decorative board.

Generally, in order to construct a parquet or checkered decorative board using multiple thin wood boards, the thin wood boards are cut into appropriate dimensions, arranged to form a pattern, and glued to paper, etc., and then placed on the base material. However, due to the expansion and contraction of the wood as it dries and wets, uneven gaps are created between each wooden board, which not only makes it look unsightly, but also creates an appearance that is only for the cosmetic nature of the wood. It exhibits a lack of three-dimensional effect, and the adhesive seeps out at the joints between thin wooden boards, resulting in poor cosmetic properties.Furthermore, hardness, abrasion resistance, water absorption, and other physical properties are poor. There are drawbacks.

On the other hand, in order to obtain good physical properties, it is conceivable to form a parquet or checkerboard-like decorative board by combining a plurality of resin-injected thin wood boards, which are made by injecting and curing synthetic resin liquid into thin wood boards. The treated wood thin board is extremely hard after resin liquid is injected and hardened, and when cutting the wood thin board into the appropriate size and shape, cracks and chips are likely to occur, and the cutting process is also difficult, making it difficult to manufacture decorative boards. The process becomes complicated, and furthermore, there are problems with the joints formed between adjacent thin wood boards, cracks in the wood thin boards, and decoration of chipped parts. In addition, after injecting the resin liquid, placing uncured wood thin plates individually in a pattern on the substrate surface is time-consuming and low in productivity, and the positions and intervals tend to be irregular and not uniform. There was a problem that it was difficult to get makeup that looked like this.

In order to eliminate such drawbacks, the present invention connects a plurality of thin wooden boards in the plane direction in advance with threads or sheet-like materials that are insoluble or poorly soluble in synthetic resin liquid, and the connected thin wood boards and threads are Alternatively, after injecting a synthetic resin liquid into both the sheet-like material and the thread or sheet-like material, the yarn or sheet-like material is placed on the substrate directly or with an adhesive, and then the substrate and the thin wooden board are placed. In addition, the injected synthetic resin liquid is leached into the joints of each thin wooden board and solidified, and the sheet-like material is removed after connecting the thin wooden boards via the leached synthetic resin. The present invention provides a method for manufacturing a decorative board.

An embodiment of the present invention will be described with reference to the drawings. A plurality of thin wooden boards 1 are arranged in a desired size as needed.
After cutting into shape, adjacent thin wood boards 1, 1
A suitably small interval 2 is left between the opposing end faces of the two pieces of wood, and the pieces are joined together in a flat plate shape with a thread or sheet material 3 that is insoluble or poorly soluble in the synthetic resin liquid, and the wood is joined in a parquet style, a small checkered pattern, or a checkerboard style. Form a thin plate. The above-mentioned small gap 2 refers to the state where the thin wood plates 1 and 1 are not completely in contact with each other, and includes small gaps of 0.3 mm or less that occur when they are butt-connected, but should be kept at a maximum of 4.0 mm. This is preferable because it facilitates the connection by leaching the resin liquid later.

The thin wood board used may be wood, particle board, fiberboard, or other board-like material into which a synthetic resin liquid can be injected, and the thin wood board has been previously colored or decolorized by permeation of a colored liquid. You can stay there. Wood thin boards are very thin, such as sliced veneer, with a thickness of 0.8 mm or less.

On the other hand, the thread or sheet material 3 that connects the wooden thin plates 1 and 1 is one that is insoluble or poorly soluble in the synthetic resin liquid and impregnated with resin during the subsequent synthetic resin liquid injection treatment. As such materials, preferred are thin paper, linter paper, vinylon, fibrous sheets such as glass fibers, nonwoven polypropylene fabrics, or spun yarns such as cotton threads.

As such yarn or sheet-like material 3, it is not preferable to use a material that dissolves or disintegrates in the synthetic resin liquid and reduces the connection ability, so it is preferable to use a fiber material with low strength such as thin paper. Sheets and nonwoven fabrics made of synthetic resins that are soluble in organic solvents must be selected by testing their compatibility with the synthetic resin solution in advance.

When connecting a plurality of thin wooden boards 1, 1...1 in parallel in the plane direction, the thin wooden boards 1 are connected between the surfaces of adjacent thin wood boards 1, 1 with an adhesive in order to facilitate the subsequent peeling work. , 1 may be partially connected using the minimum number of sheets 3 required for connection.

The adhesive may be applied to the sheet-like material 3 in advance, or may be applied to the sheet-like material 3 or the wood thin boards when bonding the sheet-like material 3 between the thin wooden boards, but the adhesive used may be The agent is insoluble or poorly soluble in the synthetic resin liquid injected into the thin wood board 1, and the sheet-like material 3 is injected into the thin wood board until the synthetic resin liquid solidifies.
It is necessary that the plurality of thin wood plates 1 and 1 are bonded with sufficient strength to connect the plurality of thin wood plates.

Such adhesives include water-based PVA, starch, protein,
When cellulose or the like is used and the injected synthetic resin liquid is aqueous, such as phenol, melamine, or other various emulsions, non-aqueous ones such as acrylic, vinyl, or rubber are preferred.

Further, any injection synthetic resin liquid can be used as long as it is a reactive adhesive such as urethane, epoxy, melamine, or urea. Further, a self-adhesive adhesive sheet or the like may be used for the yarn or sheet-like material, and in this case, the above-mentioned adhesive is not necessarily required.

In either case, the compatibility between the adhesive and the injection synthetic resin liquid may be selected in advance. Incidentally, appropriate solvents, curing agents, dyes, pigments, and other additives may be mixed into the injected synthetic resin liquid.

After a plurality of thin wooden boards 1, 1, . As this injection method, methods such as pressurized injection, reduced pressure injection, and reduced pressure pressurized injection can be adopted.

In addition, in the method of applying the synthetic resin liquid to the surface of the thin wooden board 1, the synthetic resin liquid is absorbed by the thin wooden board 1, and no leaching of the synthetic resin liquid can be expected. The above-mentioned injection method is used because it is not possible to connect the parts by leaching synthetic resin liquid from the thin wood boards.

After injecting the synthetic resin liquid into the thin wooden board 1,
The thin wood plates 1, 1 connected by a sheet-like material 3
... 1 is polymerized and placed on the substrate 4 with the sheet-like material 3 facing the surface side, and this is cured by heat and pressure using a hot press or the like, or by heating and curing with an electron beam, radiation, etc. to integrate the substrate and the wood thin material. At the same time, the injected resin is solidified. At this time, if the injected resin liquid has adhesive properties, it may be placed directly on the substrate and the injected resin liquid may be used to bond and integrate, or a connecting agent may be used in combination. .

During this heating, a part of the injected synthetic resin liquid on the surface and inside of the thin wood board 1 leaches out into the small space 2 which is the connection between the thin wood boards 1 and 1 due to pressurization, thermal expansion, etc., and the leached synthetic resin The thin wooden boards 1, 1 are joined together at the connecting part to form a resin-filled part, and the thin wood boards 1, 1 are connected and bonded to each other by solidification, thereby strengthening the joint formed by the small space part 2.

It is sufficient that the resin liquid leaches out in an amount sufficient to connect the joints of the thin wood boards, but it is possible to forcibly exude it by applying pressure or the like to fill the joints. It is preferable to do so in terms of strength and surface smoothness.

Further, the sheet material 3 connecting the thin wooden boards 1 and 1 is penetrated by the synthetic resin liquid when the synthetic resin liquid is injected into the thin wooden boards 1, and is hardened by solidification of the synthetic resin liquid, and is hardened by sanding, etc. It can be easily destroyed and removed by the grinding process.

The hardening of the sheet-like material 3 is done by pasting the sheet-like material on the thin wooden board using the injected resin before injecting the resin liquid into the thin wood board, so special treatment is required. This can be easily performed during the manufacturing process of decorative laminates.

After arranging and fixing a plurality of thin wooden boards 1 on the substrate 4 in a parquet-like or checkered pattern, a sheet-like material 3 is fixed between the surfaces of the thin wooden boards 1, 1.
is removed by appropriate grinding means such as sandering.

As described above, the present invention enables a plurality of thin wooden boards to be
The threads or sheets are connected in advance in the planar direction by threads or sheet-like materials that are insoluble or poorly soluble in the synthetic resin liquid, and the synthetic resin liquid is injected into both the connected thin wooden boards and the threads or sheet-like materials, and then the threads or sheets are injected into the synthetic resin liquid. The shaped object is placed on the substrate directly or via an adhesive with the surface side facing up, and then the substrate and the wooden thin board are integrated, and the injected synthetic resin liquid is leached into the connection part of each wooden thin board. The present invention relates to a method for manufacturing a decorative laminate, which is characterized in that the sheet-like material is removed after the leached synthetic resin is solidified and the leached synthetic resin is used to connect the laminates. When connecting with a shaped object, the thin wooden boards can be easily cut because they have not been injected with synthetic resin, and the workability is better than when the thin wood boards are injected and hardened and then bonded together. Never.

In addition, a plurality of thin wooden boards can be combined into a desired parquet or checkerboard pattern, and since synthetic resin liquid is injected and solidified into the connected plurality of thin wood boards, hardness and durability are improved. It is possible to obtain a decorative laminate that has excellent physical properties such as abrasion resistance and has a constant spacing between the wooden laminates, and the wooden laminates are made transparent by solidification of the injected synthetic resin liquid, resulting in surface decorative properties. A good decorative board can be formed, and during the solidification process, the synthetic resin liquid leaches into the joints of the thin wood boards, making it possible to firmly connect and fix the thin wood boards at the same time as integrating the board and the thin wood boards. , there is no chance of see-through, cracking, or adhesion of dirt between thin wooden boards.

In addition, according to the method of the present invention, the sheet-like material or thread connecting the thin wooden boards becomes hard and easily destroyed by permeation and solidification of the synthetic resin liquid, so it can be easily separated from the thin wood boards by sandering or the like. It can be removed by polishing, and after removal, a beautiful decorative surface made of resin-infused wood thin board can be revealed. In addition, since the removal of the sheet-like material and the grinding of the surface of the thin wooden board are performed at the same time, the thickness accuracy of the decorative board can be obtained with one sanding. Since the liquid is injected and hardened, the cutting resistance of the sheet material and the thin wood board during surface sanding is almost the same, resulting in uniform grinding and the formation of a decorative surface with excellent surface smoothness with just one sanding. be done. In addition, since the sheet-like object is removed while being integrated with the substrate and the thin wooden board, the back side of the thin wood board is reinforced by integrating it with the substrate, and the sheet-like object can be smoothed without cracking when removing it. It is. Furthermore, the sheet-like material has flexibility because the injected resin is not hardened until it is integrated with the substrate, and the sheet-like material absorbs the pressure when pressing the thin plate with a press. There is no chance of damaging or breaking the thin plate.

Furthermore, when performing surface treatment such as painting on the surface of the decorative board obtained in this way, the joints between the wooden laminates are filled and fixed by the leaching of the synthetic resin, so the paint is sucked into the joints. can prevent
A smooth decorative surface can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a plurality of thin wood boards connected with a sheet-like material, and FIG. 2 is a perspective view of a decorative board with sheet-like materials attached. FIG. 3 is a partial sectional view of the decorative board from which the sheet material has been removed. 1... Thin wood board, 2... Small interval portion, 3... Sheet-like material, 4... Substrate.

Claims (1)

[Claims] 1. A plurality of thin wooden boards are connected in advance in the plane direction with a thread or sheet-like material that is insoluble or poorly soluble in a synthetic resin liquid, and a synthetic resin liquid is applied to both the connected thin wood boards and the thread or sheet-like material. After injecting, the thread or sheet-like material is placed on the substrate directly or via an adhesive with the surface side facing, and then,
The substrate and the thin wooden boards are integrated, and the injected synthetic resin liquid is leached into the joints of each thin wooden board and solidified, and the thin wood boards are connected via the leached synthetic resin, and then the sheet-like material is removed. A method for manufacturing a decorative board, which is characterized by: