JPS6110449A - Manufacture of decorative top board with water tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves laminating a post-form type melamine resin decorative board onto the surface of a wooden core material having a curved surface, so that the flange portion of the aquarium is below the height of the top plate surface. The present invention relates to a method of manufacturing a decorative top plate with an aquarium that is attached so as to have a water tank attached thereto.

[Prior art]

In recent years, when using decorative countertops, which are made by laminating a post-form type melamine resin decorative board on the surface of a curved wooden core material at the same time as bending the surface, for the countertops of sinks, washstands, etc. In order to make it easier for spilled water to flow into the aquarium, aquariums are now often installed so that the flange of the aquarium is below the surface height of the top plate.

For example, the method of installing the water tank is
There is a method described in Japanese Patent No. 4413, but this method requires a large space because the resin is injected and hardened in two steps, and the work is complicated and requires a large number of man-hours.

In addition, the 7-lung part of the aquarium is rarely horizontal; it may be diagonal, wavy, bent, or otherwise distorted. Therefore, it is difficult to prevent resin leakage.

In more detail, when forming a hole for fitting the aquarium in the core material and pouring resin onto the back side of the decorative board after laminating the decorative board, it is easier to pour resin into the entire hole, but it is easier to pour the resin into the entire hole, but it is necessary to use adhesive light bulbs to match the shape of the aquarium. When removing the resin layer with a cutting machine such as a router, a large amount of the resin layer is removed, resulting in wasted resin and an increase in cost.

There is also a method described in JP-A-55-133219, but when a decorative board is laminated after forming a hole for fitting a water tank in the core material, the adhesion around the hole is insufficient and The thickness of the resin layer may not be uniform when the resin injection hardening process is performed due to waving in the decorative board.

Furthermore, when pouring polyurethane resin, for example, the decorative board is bonded after the insertion holes are formed, so if the working atmosphere is humid, foaming may occur on the cross section of the core material.

[Purpose of the invention]

The present invention improves these drawbacks and proposes a method for manufacturing a decorative top plate with a water tank that is inexpensive, has excellent watertightness, has good workability, does not require a large space, and is suitable for mass production.

[Structure of the invention]

In the present invention, a post-form type melamine resin decorative board is bonded to the surface of a wooden core material having a curved surface using a rubber adhesive at the same time as the bending process, and at least the thickness of the decorative board layer is Leaving more than half of the groove, cut a groove with a width equal to or about 16 cm wider than the width of the 7-lung part of the aquarium, and pour liquid room-temperature curing thermosetting resin into this groove.
After the resin has hardened, cut the resin layer from the periphery of the wooden part to an arbitrary thickness within the thickness of the top plate at the part where the flange is attached.
Measured using the method specified in 5B (5-3), and using epoxy resin adhesive and spring properties, the installation is characterized by using metal fittings and installing the water tank flange below the top plate surface height. This is a method for manufacturing a decorative top plate with an aquarium.

An example of an embodiment of the present invention is shown in FIGS. 1 to 7. The present invention will be explained in more detail based on this figure. As the core material, a wood board-like material such as plywood, particle board, hard boat, etc. is used.

Assemble into the required shape and process the curved surface using a cutting machine such as a chamfer or router.

A post-form type melamine resin decorative board is bonded to the surface of this core material using a rubber adhesive at the same time as heating and bending to create a decorative top board.

FIG. 1 shows a cross section of this decorative top plate.

To attach the top plate to the aquarium, cut a groove in the planned position to match the shape of the 7-lung part of the aquarium.

Groove processing is performed by placing the decorative top plate on a cutting base with the decorative surface facing down and cutting from the back side of the core material using a router.

A commercially available straight bit with a diameter of 12 cm or 16 cm is used. If the 7-flange width of the water tank is constant, the groove can be machined in one cutting process using a straight bit with a diameter of 20 mm or 25 m, but if the flange width is not constant, the inner circumference of the flange , according to the shape of the outer periphery 2
Cutting is done in batches. If there is a partially wide area, cutting is performed one more time.

In this case, when cutting to match the shape of the inner periphery of the 7 langes, the cutting must be done so that the core material layer is not covered. Moreover, if the rubber adhesive layer used when laminating the decorative laminates remains, when the resin layer is cut, the adhesive layer between the decorative laminate and the resin layer will appear mottled and the appearance will be disturbed. Therefore, the adhesive layer is cut and removed together with part of the decorative board. However, if you remove too much of the decorative board layer, it will crack and cause problems in subsequent work, so it is better to leave at least half of the thickness intact.

Furthermore, when cutting to match the shape of the flange, if the center of the straight bit draws the shape of the inner and outer peripheries of the 7-flange, cutting of the resin layer will be easier later.

When the flange width is t and the groove width is L, t≦L≦t+
If the width is 20 mm, the work will be easier. If it is made larger than this, resin loss will increase, and if it is less than this, precision is required to attach the water tank after cutting the resin layer, making the work difficult, and the flange part that protrudes from the resin layer becomes large, making it difficult to use, for example, when used as a sink. When a load is applied to the water tank, the force in the direction of peeling off the resin layer and the flange at the tip of the resin layer increases due to the lever principle.

Figure 2 shows a cross section of the grooved part.

In this way, there is no need for undulations to occur on the surface of the decorative board after groove processing, and it is easy to finish the resin layer with a uniform thickness by cutting after resin injection and hardening. Furthermore, when pouring the polyurethane resin, it can be poured immediately after the groove is formed, and it is easy to prevent foaming even when the ambient humidity is high.

As the room temperature curing thermosetting resin to be injected, polyurethane resin, polyester resin, epoxy resin, etc. are used.

It is convenient for continuous production to use an injection machine that can automatically mix and inject two liquids at a fixed ratio, but a simple method is to take the required amount into a container, mix and stir with a stirrer, and then pour it as is.

FIG. 3 shows the resin injected.

After the resin hardens, the cylinder 4 is cut using a router along cutting lines as shown in FIG. 6 (6). The state after cutting is shown in FIG.

By doing so, the thickness H of the resin layer visible from the rear surface side of the aquarium can be changed arbitrarily within the range of the top plate thickness. Furthermore, if the resin layer at the periphery of the core material is left with a width of K, the adhesion area with the core material is larger than that of K, and sufficient adhesive force can be obtained without processing the cross section of the core material into a concave shape. Most aquarium flanges are made of materials such as stainless steel, ceramic, and enamel, and epoxy resin adhesives have good adhesive properties on average for these materials. For example, polyurethane resin and polyester resin have poor adhesion to stainless steel. In addition, by measuring the slump property using the method specified in JI8A5758 (5-3) and setting it to 3 or less, the adhesive will not drip even if it is mounted on a top plate with metal fittings and then immediately propped up.

Even if the slump property is 3W or less, if the viscosity is high, such as epoxy, it will be difficult to mix the base agent and curing agent or to apply it to the adhesive surface, reducing workability. Therefore, the viscosity of the adhesive is 5 x 10'voices/25 from 20°C.
It is necessary to adjust the temperature to X 10 Hatake Boise/20°C. 5
It is difficult to achieve a slump property of 3+w or less with X 10' voids or less, and workability deteriorates with 25×101 voids or more. Preferably 15 to 10 x 108 voices
X 10” boys.

In order to have a slump property of 3 or less and a viscosity of 5 x 10' voids to 25 x 10" voids, additives imparting thixotropic properties, such as fine silica gel powder or carbon black, may be added.

In this way, it is possible to use a simple method of mixing and stirring the required amount in a container with a stirring rod, filling the cartridge case, and applying it to the adhesive surface with a cartridge gun. For continuous production, an automatic mixing injection machine for high viscosity can also be used.

FIG. 6 shows the state in which the adhesive is applied.

Press the flange of the aquarium against each other and secure it with a spring fitting.

FIG. 7 shows the state in which the water tank is fixed.

FIG. 8 shows an example of a mounting fitting having spring properties.

In this way, for example, even if the adhesive shrinks when cured, the metal fittings will follow the shrinkage due to the spring properties of the horizontal portion, and
The tank flange is pressed and fixed. The adhesive does not drip even if you move or stand it up immediately after fixing it, so it does not require a large storage space. In addition, by adjusting the cutting depth P of the core material, it is possible to use a metal fitting with a constant height J of the holding part even if the thickness of the core material changes. It is also dangerous to have to prepare various metal fittings accordingly.

〔Effect of the invention〕

In the present invention, after laminating the decorative board to the core material, grooves are processed to match the shape of the flange, so there is less wastage of the amount of injected resin. It has an excellent design and can be made to any thickness within the range of .

In addition, since the aquarium is fixed with an adhesive with a slump property of 3-3 or less and a viscosity of 5 x 10j to 25 x 10' boids and metal fittings with spring properties, it is not only easy to install, but can also be installed later. It can be moved or stood up immediately, and does not require a large storage space, making it suitable for mass production.

[Brief explanation of drawings]

1 to 8 outline an embodiment of the present invention. In the figure, ■ is a wooden core material, ■ is a boss foam type melamine resin decorative board, ■ is a groove, ■ is the 7 lunges of the water tank, ■ is a cast resin layer, ■ is a cutting line, ■ is an adhesive, and ■ is For installation with spring properties, use metal fittings, ■ indicates wood screws, t indicates flange width,
L indicates the groove width, H indicates the thickness of the resin layer visible from the surface side, and P indicates the cutting depth of the core material portion. Patent applicant Sumitomo Bakelite Co., Ltd.-11-. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] A post-form type melamine resin decorative board is applied to the curved surface of the wood core material using a rubber adhesive, heated and bent at the same time, and from the back side of the wood core material, at least half the thickness of the decorative board layer is pasted. After leaving the above, groove the same width as the flange part of the aquarium or about 20 mm wider than that, and pour liquid room-temperature-curing thermosetting resin into this groove, and after the resin hardens, form a groove from the periphery of the woody part. The resin layer is strained to a thickness of 2 mm or more, and the thickness of the resin layer at the part where the flange is attached is cut to an arbitrary thickness within the range of the top plate thickness, and the slump property is J.
Measured by the method specified in ISA5758 (5-3), it is 3 mm or less, and the viscosity is 5 x 10^3 poise/20
An aquarium characterized by using an epoxy resin adhesive of 25 x 10^8 poise/20℃ from ℃ and a mounting bracket having spring properties, and installing the aquarium so that the aquarium flange is below the height of the top plate surface. A method for manufacturing a decorative top plate.