JPH11114910A - Surface finishing method of wooden decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the acquisition of a uniform bond strength and an enough surface strength by a method wherein a synthetic resin sheet is bonded to the surface of a wooden plate after the softer portions in wooden grains of which are dented. SOLUTION: A wooden plate 1 is transferred and passed between an upper side rubber roll 5 and a lower side supporting roll 8 so as to press and heat the surface of the wooden plate (a). During the transfer and passage of a sheet 2 made of a synthetic resin such as a polyethylene resin or the like between both an upper and a lower pressure rolls 9, the sheet 2 is bonded on the surface of the wooden plate, the softer portions in wooden grains of which are dented, along the unevenness of the surface (b). Thus, a wooden grain pattern with a cubic effect can be obtained on a smooth surface. Further, since the softer portion in the surface of the wooden plate 1 are compressed and consequently become stronger through denting, the synthetic resin sheet 2 is bonded and a uniform bond strength is obtained. Furthermore, the surface of the synthetic resin sheet bonded to the softer portions becomes more hard to be dented by an external force and has an enough strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for finishing a surface of a wooden decorative board in which a synthetic resin sheet is adhered to the surface of a wooden board.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3 (d), a method for finishing a surface of a wooden decorative board in which a synthetic resin sheet 2 is adhered to the surface of a wooden board 1 is known. In this case, FIG.
As shown in FIG. 3, a veneer 7 is attached to a wood plywood 6 by a press machine 10 to form a wood board 1, and then, as shown in FIG. Brushing is performed in step 11, and the soft portion of the grain of the surface is scraped off and dented. Then, as shown in FIG.
3 is colored by a spray coater 12, and then, as shown in FIG. 3 (d), a synthetic resin sheet 2 is adhered and fixed to the surface of the wooden board 1 by a laminator 13. Therefore, in this case, it is possible to obtain a wooden decorative board having a three-dimensional wood grain pattern on a smooth surface.

[0003]

However, in the above-mentioned conventional technique, when the synthetic resin sheet 2 is bonded to the concave soft portion on the surface of the wooden board 1, the soft portion opposes the pressing force at the time of bonding. The synthetic resin sheet 2 is not securely adhered to the surface of the soft portion because it cannot be completely cut off, and uniform adhesive strength cannot be obtained. The surface of the sheet 2 was further easily dented by external force, and sufficient surface strength could not be obtained. In addition, as a preparatory step before the coloring step by the spray coating machine 12, a floating step of performing brushing with the wire brush roll 11 is required, and the step becomes complicated.

SUMMARY OF THE INVENTION The present invention was invented in order to solve all the problems in the prior art described above. That is, an object of the present invention is to provide a method for finishing a surface of a wooden decorative board in which a synthetic resin sheet is adhered to the surface of the wooden board. Another object of the present invention is to provide a method for finishing a wooden decorative board, which can provide a uniform adhesive strength and a sufficient surface strength and simplify the process.

[0005]

According to a first aspect of the present invention, there is provided a surface finishing method for a wooden decorative board, wherein the surface of the wooden board is pressurized to dent a soft portion of a grain of the wooden board, and then the surface of the wooden board is dented. It is characterized by bonding a synthetic resin sheet.

Accordingly, in this case, since the synthetic resin sheet is adhered to the surface of the wooden board in which the soft portion of the wood is recessed, a three-dimensional wood grain pattern appears on the smooth surface. Moreover, the surface of the wooden board is pressurized so that the soft portion of the grain of the surface is dented, so that the soft portion is compressed when dented and becomes strong, and the surface of the soft portion is further pressed by the pressing force at the time of bonding. There is no depression, and the synthetic resin sheet is securely bonded to the same surface, and uniform adhesive strength can be obtained. Also, the surface of the synthetic resin sheet adhered to the soft part is harder to dent due to external force,
Sufficient surface strength can also be obtained.

According to a second aspect of the present invention, there is provided a method for finishing a surface of a decorative wooden board according to the first aspect of the present invention, wherein the wooden board after coloring and a transparent synthetic resin sheet are used. It is characterized by doing.

[0008] Therefore, in this case, in particular, even if the wooden board is colored, it is compressed by pressing instead of being scraped off by brushing as in the prior art. The soft part can be recessed without any trouble, and the conventional floating process as a preparatory process for the coloring process is not required, simplifying the process. Appears without difficulty through the resin sheet.

According to a third aspect of the present invention, in the surface finishing method for a wooden decorative board according to the first or second aspect, wood grain is formed in a spring portion and an autumn portion. The spring material is dented by pressing with a rubber roll that is harder than the spring material and softer than the autumn material.

[0010] Therefore, in this case, in particular, a grain is formed in the spring wood part and the autumn wood part, and the surface of the spring wood part is dented, so that a wood grain pattern rich in natural feeling and three-dimensional appears. Moreover, when it is recessed, it is pressed with a rubber roll that is harder than the spring material and softer than the autumn material, so that the surface of the spring material is securely recessed without being recessed. , An accurate grain pattern appears.

According to a fourth aspect of the present invention, there is provided a method for finishing a surface of a wooden board according to any one of the first to third aspects. It is characterized by heating while being pressed.

Therefore, in this case, especially, the surface of the wooden board is heated at the same time as the surface of the wooden board is pressed, so that the surface of the wooden board is pre-warmed before the synthetic resin sheet is bonded, and The resin sheet is easily bonded, and the bonding strength is increased.

According to a fifth aspect of the present invention, there is provided a surface finishing method for a wooden decorative board according to any one of the first to fourth aspects, wherein the synthetic resin sheet is heated and heated. It is characterized in that it is pressed and adhered to the surface of a wooden board.

Therefore, in this case, particularly, the synthetic resin sheet is heated and pressed and adhered to the surface of the wooden board.
The synthetic resin sheet that has been heated to the surface of the wooden board is firmly bonded to increase the bonding strength.

[0015]

1 and 2 show a first embodiment of the present invention.
5 shows an embodiment corresponding to all of the above examples, and the surface finishing method of the wooden decorative board according to this embodiment is as follows. The surface of the wooden board 1 is pressed to dent the soft portion of the wood grain, and then synthesized on the same surface. The resin sheet 2 is bonded.

In the method for finishing the surface of a wooden decorative board according to this embodiment, a wooden board 1 after coloring and a transparent synthetic resin sheet 2 are used. Further, a grain is formed by the spring material portion 3 and the autumn material portion 4, and the spring material portion 3 is dented by pressing with a rubber roll 5 which is harder than the spring material portion 3 and softer than the autumn material portion 4. At this time, the surface of the wooden board 1 is heated while being pressed. Further, the synthetic resin sheet 2 is heated and pressed to adhere to the surface of the wooden board 1.

As shown in FIG. 2, the wooden board 1 is formed by attaching a facing veneer 7 to a base material plywood 6, and the facing veneer 7 has a grain composed of a spring lumber part 3 and a hard autumn lumber part 4. doing. FIG.
2 (a) and FIG. 2 (a), the wooden board 1 is transported and passed while being sandwiched between the upper rubber roll 5 and the lower support roll 8, so that the surface of the front mounting plate 7 is reduced. Heat is applied at the same time as pressure is applied by the rubber roll 5.

In this case, the rubber roll 5 and the support roll 8
Rotate in directions opposite to each other in synchronization with the transfer of the wooden board 1. The surface hardness of the rubber roll 5 is set in a range that is harder than the spring material portion 3 and softer than the autumn material portion 4, but it is generally sufficient to set the rubber hardness in a range of 50 to 70 °. The pressing force is set in the range of 6 to 10 kg / cm ² . The rubber roll 5 is heated by a heater or the like, and heats the surface of the front veneer 7 of the wooden board 1. However, by setting the surrounding atmosphere of the wooden board 1 to a high temperature, the surface of the wooden board 1 is heated. May be heated. In addition,
The material of the support roll 8 is not particularly limited, such as rubber and metal. However, it is preferable that the support roll 8 is formed of hard steel or the like so as to support the pressing force of the rubber roll 5.

The synthetic resin sheet 2 is made of polyethylene resin,
As shown in FIG. 1B, the sheet is a transparent sheet made of a vinyl chloride resin or the like, and is transported while being sandwiched between the upper and lower pressing rolls 9 as shown in FIG.
It is adhered to the surface of the veneer 7 of the wooden board 1 along the irregularities. In this case, both the upper and lower press rolls 9 are metal heat rolls heated by a heater or the like, and the synthetic resin sheet 2 is heated by the press rolls 9 and adhered to the surface of the wooden board 1. At that time, an adhesive is previously applied to the back surface of the synthetic resin sheet 2, and the synthetic resin sheet 2 is heated together with the adhesive and is firmly adhered to the surface of the wooden board 1. Although both press rolls 9 are heat rolls, the lower press roll 9 does not need to be a hot roll, and the same roll as the support roll 8 may be used.

Therefore, in the method for finishing the surface of a wooden decorative board according to this embodiment, the synthetic resin sheet 2 is adhered to the surface of the wooden board 1 in which the soft part of the wood is recessed along the unevenness, so that the smooth surface is obtained. It is possible to easily obtain a wooden decorative board in which a three-dimensional wood grain pattern appears. or,
In this case, a grain is formed by the spring lumber part 3 and the autumn lumber part 4, the surface of the spring lumber part 3 is dented, and a wood grain pattern rich in natural feeling and three-dimensional appears. Moreover, when it is recessed,
Pressed by a rubber roll 5 which is harder than the spring lumber part 3 and softer than the autumn lumber part 4, the surface of the autumn lumber part 4 is not dented, only the surface of the spring lumber part 3 is surely dented, and an accurate grain pattern is formed. Will appear.

Further, the surface of the wooden board 1 is pressurized to dent the soft portion of the grain of the surface, and the soft portion is compressed and strengthened when dented, and the surface of the soft portion is pressed during bonding. There is no further depression due to the pressure, and the synthetic resin sheet 2 is securely adhered to the same surface, and uniform adhesive strength can be obtained. Further, the surface of the synthetic resin sheet 2 adhered to the soft part is hardly dented by an external force, and a sufficient surface strength can be obtained.

In the method for finishing the surface of a wooden decorative board according to this embodiment, the wooden board 1 is colored but is not cut off by brushing as in the prior art, but is compressed by pressing. The soft part of the grain of the surface of the wooden board 1 can be dented without any trouble, and the conventional floating step as a preparatory step of the coloring step is not required, so that the step is simplified and the colored part is colored. A three-dimensional wood grain pattern appears through the transparent synthetic resin sheet 2 without any problem.

The surface of the wooden board 1 is heated at the same time as the surface of the wooden board 1 is pressurized, and the surface of the wooden board 1 is pre-warmed before the synthetic resin sheet 2 is bonded. The sheet 2 is easily bonded, and the bonding strength is increased. Moreover, in this case, the synthetic resin sheet 2 is heated and pressurized and adheres to the surface of the wooden board 1. At this time, the heated synthetic resin sheet 2 is firmly adhered to the surface of the wooden board 1 and the adhesive strength is increased. Is further enhanced.

[0024]

As described above, according to the method for finishing the surface of a wooden decorative board according to the first aspect, not only a three-dimensional wood grain pattern appears on a smooth surface but also on the surface of the wooden board. The synthetic resin sheet is securely bonded, so that uniform adhesive strength can be obtained, and sufficient surface strength can also be obtained.

Further, in the method for finishing the surface of a wooden decorative board according to the second aspect, in particular, the soft portion of the grain of the surface of the colored wooden board can be dented without any trouble, and the preparation step before the coloring step is performed. Is simplified, and a colored three-dimensional wood grain pattern appears without any difficulty through the transparent synthetic resin sheet.

In the surface finishing method for a wooden decorative board according to the third aspect, a three-dimensional wood pattern rich in natural feeling appears in the spring wood part and the autumn wood part. By being pressed with a rubber roll having a range of hardness,
The surface of the autumn lumber is not depressed, but only the surface of the spring lumber is surely depressed, so that an accurate grain pattern appears.

[0027] In the surface finishing method for a wooden decorative board according to the present invention, the surface of the wooden board is heated at the same time as the surface of the wooden board is pressurized. Is heated in advance, and the synthetic resin sheet is easily adhered to the surface, thereby increasing the adhesive strength.

In the surface finishing method for a wooden decorative board according to the fifth aspect, in particular, the synthetic resin sheet is heated and pressed and adhered to the surface of the wooden board, so that the synthetic resin sheet is heated to the surface of the wooden board. The resulting synthetic resin sheet is firmly bonded to increase the bonding strength.

[Brief description of the drawings]

FIG. 1 shows a method for finishing a surface of a wooden decorative board according to an embodiment of the present invention, and (a) and (b) are schematic perspective views in respective steps thereof.

FIGS. 2A and 2B are enlarged cross-sectional views each showing a main part in each step of a surface finishing method of the wood decorative board. FIGS.

FIG. 3 shows a conventional method of finishing a surface of a wooden decorative board, in which (a), (b), (c) and (d) are schematic side views in respective steps.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wood board 2 Synthetic resin sheet 3 Spring material part 4 Autumn material part 5 Rubber roll

Claims (5)

[Claims] 1. A method for finishing a surface of a decorative wooden board, comprising pressing a surface of a wooden board to depress a soft portion of a grain of the surface, and then bonding a synthetic resin sheet to the surface. 2. The surface finishing method for a wooden decorative board according to claim 1, wherein the wooden board after coloring and a transparent synthetic resin sheet are used. 3. The spring wood part is formed by the spring wood part and the autumn wood part, and the spring wood part is dented by pressing with a rubber roll harder than the spring wood part and softer than the autumn wood part. 3. The surface finishing method for a wooden decorative board according to 1 or 2. 4. The surface finishing method for a wooden decorative board according to claim 1, wherein the surface of the wooden board is heated while being pressed. 5. The surface finishing method for a wooden decorative board according to claim 1, wherein the synthetic resin sheet is heated and pressed to adhere to the surface of the wooden board.