JP2001030204A - Manufacture of decorative plate, manufacture of decorative member, and decorative plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a crack without impairing appearance when a V-shaped groove is formed for bending a decorative plate having a sense of high quality using a timber on its surface. SOLUTION: A surface of a sliced veneer 33 of a plate material obtained by laminating a nonwoven fabric 32 and the veneer 33 on a base material 31 is coated with a soft urethane paint. Thus, a coating film tough against bending is formed to suppress a surface crack. Here, to coat with the paint, a natural roll coater having a special sponge coating roll is used. Thus, thick coating can be performed as compared with a conventional rubber roll coater, and a paint waste can be reduced as compared with a flow coater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board in which a substrate and a wood board are laminated, a method of manufacturing a decorative board, and a method of manufacturing a decorative member having a corner.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a decorative material provided on a surface of a member having a corner portion, such as a door frame, is subjected to V-cut processing on a flat decorative plywood 1 to form a V-groove 2. Then, it is manufactured by bending at the V groove 2 portion. Normally, decorative vinyl chloride plywood is used as a decorative material subjected to such bending.

[0003]

However, the vinyl chloride decorative plywood described above has a resin surface, and the interior has a lower texture than wood. Therefore, it is conceivable to apply a V-cut to a decorative plywood obtained by laminating a wood veneer on a base material and to bend it. In this case, as shown in FIG. 2, the bent portion 3 may be broken. In order to prevent cracks, it is necessary to attach a tape or the like to the corners or the entire surface of the decorative material to reinforce it. However, if the tape is attached, the appearance is impaired.

[0004] In recent years, there has been a demand for high-mix low-volume production of cosmetic materials for housing in order to provide personalized materials suitable for individual tastes.

The present invention has been made in view of the above circumstances, and in a decorative board made of wood, even when a V-groove is formed and bent, the appearance of the board is maintained without impairing the appearance. Veneer, which can reduce the occurrence of
And a method of manufacturing this decorative board suitable for high-mix low-volume production,
It is another object of the present invention to provide a method for manufacturing a decorative member having corners.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, a method for manufacturing a decorative board according to the present invention comprises a decorative board comprising a flat base material and a flat wood board laminated on the base material. A method for manufacturing a board, wherein a sticking work step of sticking the wood board to the base material, and applying a soft urethane-based paint to a surface of the wood board integrated with the base material by the sticking work step. And a coating step, wherein in the coating step,
The soft urethane paint is applied on the surface of the wood plate by a roll coater having a sponge roll.

Further, the method of manufacturing a decorative member according to the present invention is characterized in that a decorative member having a corner portion is formed by folding a decorative plate having a flat base material and a flat plate plate laminated on the base material. A method of manufacturing, comprising: a sticking operation step of sticking the wood plate to the base material; and applying a soft urethane-based paint to a surface of the wood plate integrated with the base material by the sticking work process. A V-cutting step of forming a V-groove on the surface of the wood plate to which the soft urethane-based paint is applied; and a bending step of bending the V-groove portion formed on the wood-plated plate in the V-cutting step. In the applying step, the soft urethane-based paint is applied on the surface of the wood plate by a roll coater having a sponge roll.

[0008] Further, a decorative plate according to the present invention comprises a flat base material, a flat wood plate attached to the base material, and a soft urethane paint applied to the surface of the wood plate. In the decorative board, the soft urethane paint is applied on the surface of the wood board by a roll coater having a sponge roll.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A. First, FIG. 3 is a side view showing a decorative plate manufactured by a manufacturing method according to an embodiment of the present invention. As shown in the figure, the decorative board 30 is provided with a nonwoven fabric 32 on a flat base material 31.
The plate 33 has a laminated structure. Wood board 33
Is coated with a soft urethane paint (details will be described later). Here, as the base material 31, a material such as a plywood, a fiber board, and a wood piece board can be used.

B. Method for producing decorative board B-1. Next, a method of manufacturing the decorative board 30 having the above configuration will be described. First, a bonding operation step of laminating and bonding the nonwoven fabric 32 and the wood plate 33 on the upper surface of the base material 31 will be described with reference to FIG. In the sticking operation process, first, FIG.
As shown in (a), the adhesive 40 is applied almost uniformly to the upper surface of the base material 31 using a spreader roll (glue machine). Here, the application amount of the adhesive 40 is 6 to 12 g / 30.
Although it is about ² cm ² , the optimum amount of application is determined by the material of the base material 31 used in the same manner as in a general bonding operation. After the adhesive 40 is uniformly applied in this manner, the nonwoven fabric 32 is flattened and adhered onto the adhesive 40 applied on the base material 31. When the nonwoven fabric 32 is pasted, the operation immediately proceeds to hot pressing.

In the hot pressing operation, the base material 31 and the nonwoven fabric 32 are integrated at a specified temperature, pressure and compression time. Here, the temperature is 100 to 120 ° C., preferably 10
The pressure is about 5 ° C., the pressure is about 4 to 7 kg / cm ² , preferably about 6 kg / cm ² , and the compression time is about 40 to 60 seconds, preferably about 50 seconds.

When the hot pressing operation is completed, the base material 31 and the nonwoven fabric 32 are removed in order to prevent heat release and sheet warpage.
In a state where the surfaces of a plurality of plate materials integrating
Leave to cool.

When the plate material is cooled by performing the above-described operation, as shown in FIG. 4B, a spreader roll is used on the upper surface of the nonwoven fabric 32 adhered on the base material 31 in the same manner as described above. The adhesive 40 is applied almost uniformly. Then, the wood plate 33 is stuck on the adhesive 40 applied on the nonwoven fabric 32. As shown in the figure, when bonding a plurality of wood plates 33 on the non-woven fabric 32, they are bonded so that there is no gap between the adjacent wood plates 33 and they do not overlap.

After bonding the wood plate 33 in this way,
Perform hot press work. Here, a temperature of 100 to 12
Hot pressing is performed under the conditions of 0 ° C., a pressure of 4 to 7 kg / cm ² , and a compression time of 60 seconds or more, so that
2 on top. When the hot pressing operation is completed, the surfaces of a plurality of plate members in which the base material 31, the nonwoven fabric 32 and the wood plate 33 are integrated are put on each other, and left until cooled.

After the nonwoven fabric 32 and the board 33 are sequentially laminated and integrated on the substrate 31, the surface of the board 33 is finished. Here, as a finishing operation, grinding with sandpaper of a sanding machine is performed. Here, the sanding method using a sanding machine may be a method of performing sanding twice, such as sanding with sandpaper of grain size 180 first, and then sanding with sandpaper of grain size 240, or only sanding with grain size 180. Or 240
Sanding may be performed once with only the number of sandpaper, and the grain size and sanding method of the sandpaper to be used may be determined according to the material and thickness of the wood plate 33 to be used.

When the above-mentioned finishing operation is completed, the pasting operation step is completed, and a plate material in which the nonwoven fabric 32 and the wood plate 33 are laminated on the base material 31 (hereinafter, referred to as a plate material before painting) is produced.

B-2. Painting Step Next, a painting step of painting the above-mentioned plate material before painting will be described with reference to FIG. First, a coloring operation for coloring a pre-coating sheet material including the base material 31, the nonwoven fabric 32, and the wood board 33 produced by the above-described attaching operation process is performed (Step S1). For coloring work, 80
Universal stain (pigments and dyes) with a target of ~ 90%
And toning. Using the coloring agent thus blended, it is applied substantially uniformly to the surface of the plate material before coating by a coloring machine. Here, the application amount is 1.5 to 2.5 g.
/ 30 cm ² , and in order to prevent the occurrence of “color blur” in which the colored color is dissolved in the undercoating film in the undercoating operation described below, a quick-drying sealer is used.
It is preferable that the coloring agent is mixed in the coloring agent in an amount of about%. The coloring operation is performed when coloring is necessary, and need not be performed when coloring is not necessary.

When the coloring operation is completed, the pre-painted sheet material is dried in a hot air IR drying oven or natural drying or the like (step S2). When the plate material before coating is dried, an undercoating operation is performed (step S3). In the undercoating operation, a soft urethane-based paint is applied almost uniformly to the surface of the plate 33 as a plate material before coating by a roll coater coating machine. Here, the following compound is used as the soft urethane-based paint to be applied. 90% (weight ratio) of "No. 1-2 Wood Sealer P Liquid for Polyurex V-cut" (trade name) manufactured by Wasin Chemical Co., Ltd. No.1-2 Wood Sealer for V-Cut D Liquid "(trade name)
10 (weight ratio), and a soft urethane-based paint in which "No. 1 thinner for Polyurex V-cut" (trade name) manufactured by Wasin Chemical Co., Ltd. (trade name) is blended at a ratio of 10 to 20 (weight ratio) as a diluent is used. The viscosity is IHS cup 40-4
It is about 5 seconds. The amount of the soft urethane-based paint applied in the undercoating operation is 5.5 to 7.5 g / 30.
cm ² . The coating amount, compounding ratio, and viscosity shown here are the coating materials used when a natural roll coater having a coating roll made of a special sponge described later is used.

In the manufacturing method according to the present embodiment, the above-mentioned undercoating operation of the soft urethane-based paint is performed by using a natural roll coater 60 shown in FIG. As shown in the figure, the natural roll coater 60
Is provided with a coating roll 61, a backup roll 62, and a pickup roll 63. The coating roll 61 and the backup roll 62 are formed by passing a plate material before coating between the coating roll 61 and the backup roll 62.
The soft urethane-based paint sent out from between is applied to the upper surface of the sheet material before painting (the surface of the punch plate 33).

Here, the natural roll coater 60
Uses a special sponge as the application roll 61. The material of the special sponge is, for example, chloroprene rubber or the like, and the bubble size thereof is preferably small. Further, the hardness of the sponge may be appropriately changed according to the roll size and the like. The material used as the application roll 61 may be a sponge having ordinary air bubbles other than the special sponge. However, since the effects described later become more remarkable, the above-described fine chloroprene rubber having the air bubble size may be used. preferable.

As described above, the application roll 6 made of special sponge
The effect of using No. 1 will be described. As described above, in the undercoating operation, it is necessary to apply a soft urethane-based paint at a rate of about 5.5 to 7.5 g / 30 cm ^2. However, a natural roll coater having a normal rubber application roll requires 1 to 3 g / Since it is used for thin coating of about 30 cm ² , it cannot be used for the above-mentioned undercoat. Therefore, it is conceivable to apply a soft urethane paint using a flow coater capable of thick coating. However, in a flow coater, coating is performed by circulating paint in a circulation path and pouring the paint into a plate to be coated. Therefore, at the time of painting, at least an amount of paint necessary to fill the circulation path is necessary, and when used in small-quantity production, a large amount of paint may be left over. In other words, it is not suitable for various kinds of small-quantity production. On the other hand, the natural roll coater 60 described above uses the application roll 61 made of a special sponge, so that the natural roll coater 60 has a larger amount of 1 to 8 g / 3 than a roll coater having a normal rubber roll.
A coating amount of 0 cm ² becomes possible, and it can be used for the undercoating work of the soft urethane-based paint described above. Further, since it is only necessary to supply a necessary amount of the paint between the application roll 61 and the backup roll 62, the waste of the paint can be reduced, which is suitable for various kinds of small-quantity production. In recent years, in the case of decorative materials used for houses (for example, door frames), shapes and colors according to personal preferences are often selected. In such a case, it can be said that the coating is preferably performed using a natural roll coater 60 having a coating roll 61 made of special sponge.

Further, in the flow coater, due to its structure,
Although it is necessary to increase the amount of dilution of the paint, the drying time of the applied paint becomes longer, but in the natural roll coater 60, even if the diluent is smaller than that of the natural roll coater having a flow coater and a rubber application roll,
Since a substantially uniform coating film can be formed to the extent that there is no problem in quality, the time required for drying may be shorter than when a flow coater or a rubber roll coater is used. In addition, when the dilution rate is high as in a flow coater, the amount of residual resin after drying is reduced, so it is necessary to increase the amount of the soft urethane-based paint applied in advance, but in the natural roll coater 60, As described above, since the dilution ratio may be smaller than that of the flow coater, the effect of reducing the amount of application can be obtained.

Returning to FIG. 5, when the above-described undercoating operation by the natural roll coater 60 is completed, the plate material coated with the soft urethane paint is dried (step S4). Drying conditions vary depending on temperature, humidity, etc., but drying may be performed for about 4 hours in a drying room at a room temperature of 35 to 40 ° C.

When the plate is dried in this way, a second undercoating operation is performed (step S5). The second undercoating operation is also performed by the natural roll coater 60 having the application roll 61 made of special sponge similarly to the undercoating operation described above. As the soft urethane-based paint to be applied, one having the same composition and viscosity as in the first undercoating operation described above is used, and the applied amount is about 5 to 6 g / 30 cm ² . The second undercoating operation is performed with more emphasis on leveling than the first undercoating operation. The natural roll coater 60 can form a smoother coating film as compared with a normal rubber roll coater because the coating film can be smoothed as compared with a roll coater having a normal rubber roll. be able to. When the second undercoating operation is completed, the undercoated plate is dried under the same conditions as after the first undercoating operation (step S6).

After the second undercoating operation is performed and dried, a polishing operation is performed (step S7). In the polishing work,
Polishing is performed twice with a water polishing machine using a sandpaper having a particle size of 500 to smooth the coating film on the wood plate 33. By forming a coating film as uniform as possible in the two undercoating operations described above, the amount of polishing can be reduced, and the amount of coating during the undercoating operation can be reduced.

When the polishing operation is completed, an overcoating operation is performed (step S8). The overcoating operation is also performed by a natural roll coater 60 having an application roll 61 made of special sponge, similarly to the above-described two undercoating operations. Here, the following composition is used as a soft urethane-based paint to be applied. No. 21 for Polyurex V-cut manufactured by Wasin Chemical Co., Ltd.
No. 21-7 Flat Clear D for Polyurex V-cut manufactured by Wasin Chemical Co., Ltd.
Liquid "(trade name) is 25 (weight ratio) and" Polyurex No. 9350 thinner "(trade name) manufactured by WASHIN CHEMICAL INDUSTRIES CO., LTD. As a diluent is 10-20 (weight ratio). A paint is used, and the viscosity is about 30 to 40 seconds for an IHS cup. The amount of the soft urethane-based coating material applied in the overcoating operation is 4 to 4.5 g.
/ 30 cm ² .

In the overcoating operation, it is conceivable to apply a soft urethane paint using a spray. However, when the spray is used, the dilution ratio of the coating agent is higher than when the natural roll coater 60 is used. It is necessary to reduce the residual resin after drying. Therefore,
It is necessary to increase the amount of coating beforehand (5 to 10 g / 30 cm ² ) to secure the amount of residual resin after drying. However, when the natural roll coater 60 is used, the dilution ratio is low, so that it is lower than when spray is used. This also makes it possible to reduce the amount of the soft urethane paint applied.

When the above-mentioned overcoating operation by the natural roll coater 60 is completed, the plate material coated with the soft urethane paint is dried in the same manner as after the above-mentioned two undercoating operations (step S9). In this way, the decorative board 30 in which the soft urethane-based paint is applied on the surface in an appropriate amount is completed.

C. Next, a method of manufacturing a decorative member having corners by bending the decorative plate 30 manufactured as described above with reference to FIG.
This will be described with reference to FIG. First, using a running saw, a wood cutting operation for cutting the decorative board 30 manufactured as described above to a predetermined width (for example, 200 mm) is performed (step Sa1).

The decorative board 30 cut to a predetermined width in the wood cutting operation is put into a V-cut machine. And
A V-cut is performed on the back surface 51 (the surface on the side of the base material 31) of the decorative board 30, and as shown in FIG. 8, a V-groove 50 is formed at a bent portion (Step Sa2).

Thereafter, the decorative plate 30 having the V-shaped groove 50 formed thereon is formed.
Is performed at a predetermined temperature (step S
a3). As a heating method, for example, the furnace temperature in summer 40
℃, winter about 70 ℃, furnace 6m long 11m / mi
The heating operation may be performed at a speed of n, which is the same as the heating operation after the ordinary general V-cut operation.

When the heating operation is completed, an adhesive is applied to the entire back surface 51 of the decorative board 30 using a spreader or the like (step Sa4). At this time, an adhesive is also applied to the V groove 50. Then, as shown in FIG. 9A, the core 70 is arranged on the back surface 51 of the decorative board 30 using a roller press or the like, and the decorative board 3 is wound around the core 70.
0 is bent at the V groove 50 (step Sa5).
Through such operations, as shown in FIG. 9B, a decorative member 80 having a corner is manufactured.

The decorative member 80 thus manufactured
Since the soft urethane-based coating film described above is formed on the surface of the wood board 33, which is the surface thereof, it has excellent strength against sharp bending. Therefore, FIG.
Even if the corners of the decorative member 80 shown in (b) are bent, the occurrence of cracks (see FIG. 2) in the bent portions can be reduced. Therefore, it is possible to provide a high-quality decorative member by using a wood veneer as a surface material of the decorative member 80 used for a door frame of a house or the like. Further, since the occurrence of cracks at the corners can be reduced without attaching a reinforcing tape or the like, the appearance is not impaired.

Further, in the manufacturing method according to the present embodiment, the decorative board 30 having the above-described excellent characteristics and the decorative member 8 obtained by processing the same can be used even in the case of performing a high-mix low-volume production.
0 can be manufactured efficiently.

D. Modifications In the above-described embodiment, the manufacturing method in which the corners of the decorative member 80 are made substantially perpendicular has been described. However, the present invention is not limited to this, and as shown in FIG. By forming two V-grooves 50, a decorative member 80 having a C-plane corner as shown in FIG. 10B may be manufactured. Also in such a case, similarly to the above-described embodiment, the occurrence of cracks at the corners can be reduced.

In the above-described embodiment, the undercoating operation is performed twice using the soft urethane paint having the same composition. However, the operation of applying a sanding sealer is performed instead of the second undercoating operation. You may do so. In this case, the sanding sealer to be applied is 100 (weight ratio) of “No. 10 Sandeng Sealer P Liquid for Polyurex V-Cut” (trade name) manufactured by Wasin Chemical Co., Ltd. "Polyurex N No. 10 for Polycut V cut" (trade name) (weight ratio) of 50 (weight ratio) manufactured by Wasin Chemical Co., Ltd.
o. 9350 Thinner "(trade name) in a ratio of 20 to 30 (weight ratio), and the viscosity is IH
It is about 40 to 45 seconds for the S cup. The coating amount is 6
It may be about 7.5 g / 30 cm ² . As described above, when the sanding sealer is applied instead of the second undercoating operation, the polishing property can be improved by the extender pigment included in the sanding sealer. On the other hand, if the undercoating operation is performed twice as in the above embodiment, the strength against bending is improved. Therefore, when it is important to prevent the surface crack of the decorative member, it is preferable to perform the undercoating twice as in the above-described embodiment. Further, since the paint used for the undercoat is lower in cost than the above-mentioned sanding sealer, it is preferable to perform the undercoat work twice even when the cost is important. The manufacturer may determine whether to perform the undercoating operation twice or to perform the undercoating operation once and the sanding sealer application operation according to the purpose.

In the above-described embodiment, the soft urethane-based paint is "Polyurex V-cut N
o. Although the case where "1-2 wood sealer" or the like is used has been described, the present invention is not limited to this, and a paint having a composition substantially similar to these may be used.

[0038]

As described above, according to the present invention,
Even when a veneer is formed and bent on a high-quality decorative panel using wood on the surface, the occurrence of cracks can be reduced without impairing the appearance. In addition, it is possible to efficiently perform high-mix small-quantity production of decorative boards having such excellent characteristics.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a process of performing a bending process by performing a V-cut process on a conventional decorative board.

FIG. 2 is a view for explaining cracks that occur when bending is performed on the conventional decorative board.

FIG. 3 is a side view showing a configuration of a decorative board manufactured by a manufacturing method according to an embodiment of the present invention.

FIG. 4 is a view for explaining a work of attaching a decorative board in the manufacturing method according to the embodiment.

FIG. 5 is a flowchart showing a step of coating a decorative board in the manufacturing method according to the embodiment.

FIG. 6 is a side sectional view showing a schematic configuration of a natural roll coater used in the coating step.

FIG. 7 is a flowchart illustrating a process of bending a decorative board manufactured by the manufacturing method according to the embodiment to manufacture a decorative member having a corner.

FIG. 8 is a perspective view showing a decorative plate having a V-groove formed in the decorative member manufacturing process.

FIG. 9 is a view for explaining a winding operation in the decorative member manufacturing process.

FIG. 10 is a view for explaining a modification of the decorative member manufacturing process.

[Explanation of symbols]

30 ... decorative board, 31 ... base material, 32 ... non-woven fabric, 33
... wood plate, 40 ... adhesive, 60 ... natural roll coater, 61 ... application roll, 62 ... backup roll, 63 ... pickup roll, 50 ... V
Groove, 51 ... Back surface, 70 ... Core material, 80 ... Cosmetic member

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B002 AA01 AA11 AA12 BA01 BA08 BA14 BA16 BB02 BB07 BB08 BB12 DA06 2B250 AA11 BA05 DA04 EA02 EA13 FA09 FA21 FA23 FA26 FA28 FA31 FA33 FA37 GA03 HA01

Claims (3)

[Claims] 1. A method for manufacturing a decorative board comprising a flat base material and a flat wood plate laminated on the base material, comprising: a bonding operation step of bonding the wood board to the base material; A coating step of applying a soft urethane-based paint to the surface of the wood plate integrated with the base material in the pasting operation process, wherein the wood plate is rolled by a roll coater having a sponge roll. A method for producing a decorative board, characterized by applying the soft urethane-based paint on the surface of a veneer. 2. A method of manufacturing a decorative member having a corner portion by bending a decorative plate having a flat base material and a flat plate plate laminated on the base material. A sticking work step of sticking the wood board, a coating step of applying a soft urethane-based paint to the surface of the wood board integrated with the base material in the sticking work step, and the soft urethane-based paint is applied V on the surface of the plate
A V-cutting step of forming a groove; and a V-cut formed in the wood plate in the V-cutting step.
And a bending step of bending a groove portion. In the applying step, the soft urethane-based coating material is applied on a surface of the wood board by a roll coater having a sponge roll. 3. A decorative board comprising: a flat base material; a flat wood plate attached to the base material; and a soft urethane paint applied to a surface of the wood plate, wherein the soft urethane-based paint is provided. A decorative plate, wherein the paint is applied on the surface of the wood plate by a roll coater having a sponge roll.