JPS60202B2 - Conductive decorative board and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conductive decorative board and a method for manufacturing the same.

Decorative boards, which are made of dry wood, veneer plywood or laminated plywood molded with a synthetic resin adhesive, and are widely used in living environments, are generally electrical insulators.

For this reason, it becomes electrically charged due to friction with other insulating materials, and does not have the effect of discharging and neutralizing the charges of the other electrically charged materials. Static electricity has a large effect on the human body; for example, static electricity in dry air during winter can reach 60,000V, and the use of synthetic fiber carpets is prohibited in elementary schools in the United States to prevent electric shocks caused by sparks. . In particular, electrostatically charged 10 ions cause discomfort to the human body (increased pH in the blood, decreased Ca in the blood, increased Ca in the urine, increased blood sugar level, decreased vitamin C in the blood, constipation, promotion of fatigue, etc.) )give. On the other hand, ``electrification and stray currents during the operation of electronic devices (with built-in microcomputers), computers, etc.'' lead to device failures and malfunctions, and in medical offices, ``the explosive nature of solvents and anesthetics in operating rooms, etc.'' Spark of J Energy (10,000
(lower than V) is also powerful. In order to prevent static electricity damage in such living environments, there is a need to apply conductivity to decorative laminates to prevent and neutralize static electricity on floors, walls, indoor equipment, etc. However, conventional Antistatic measures include applying surfactants (cationic or silicone) to the surface of objects, and in operating rooms, etc., water is spread on the ceramic tile floor to dissipate static electricity from the charged doctor. There are terrazzo floors with graphite particles embedded in them, and conductive plastic tiles made of vinyl chloride resin and other plastic tiles with carbon black, etc., but all of them have drawbacks in terms of maintenance and aesthetics. Therefore, it was unsuitable as an interior building material due to its decorative properties.

Therefore, an object of the present invention is to provide a conductive decorative board that is conductive and has excellent aesthetics, and a method for manufacturing the same. The feature of the conductive decorative board of the present invention is that, as shown in FIG.・The pattern is made visible when viewed from the surface 2.

In the figure, 5 is a conductive adhesive, 6 is an electrode made of yellow steel or copper, and 7 is a base plywood with laminated between the layers.In this way, the front and back surfaces 2 and 3 of the plate 1 are coated with conductive material. By forming the portion 4..., when a charged substance (not shown) touches the surface 2, the discharge is neutralized through the conductive portion 4. Also, this conductive portion 4... By manifesting this, it is useful as a decorative board for floors, walls, etc., and it also satisfies the regulation of conductive floors, which requires three or more conductive points to be dispersed within the surface 5. In particular, when the pattern is formed into a wood grain pattern, an excellent decorative board that matches furniture and furnishings in a general home and does not look out of place can be provided.

Next, a method for manufacturing a decorative board having the conductive portions 4 having a wood grain pattern will be described.

There are two types of wood grain patterns: straight-grain type and board-grain type. In the case of the former, as shown in Fig. 2, multiple insulating plates 8...- are laminated and bonded by pressing through conductive adhesive layers 9... Then, as shown in Figure 3, slice this into layers in every direction to make decorative board board 1.
It forms the In this case, the adhesive is a urea-based, epoxy-based, or other synthetic resin adhesive mixed with conductive powder such as carbon black, graphite, and metal powder (Ag, etc.) at a weight ratio of 60 to 70%. This is what I did. In addition, in the case of the plate type, when laminating and bonding the insulating plates 8... with the conductive adhesive layer 9..., a mold with an uneven surface is used to press the flitch 10 as shown in Fig. 4. When this is formed and sliced as shown in FIG. 5, a grain pattern is obtained on the surface of the board 1 due to the adhesive layer.

In these cases, the thickness of the insulating plate, the thickness of the adhesive layer, and the amount of deformation of the flitch are designed so that the charging energy can be suppressed to 5 hJ or less.

This method has the advantage of being simple and inexpensive to manufacture because it requires few mechanical steps and is suitable for mass production. Further, the uses of the conductive decorative board made as described above include the following. In other words, “○} Health floor. Medical office “Conductive floor for laboratories and computer rooms.

[21 The conductive decorative board is reversely energized to generate heat, creating a heating system for floor heating and wall heating.

In this case, it is necessary to apply insulation treatment to prevent electric shock.As described above, the conductive decorative board of this invention
Because the pattern is formed on the surface using conductive parts, it becomes practical as an interior building material, and the wood grain pattern provides an excellent decorative effect that matches furniture, furnishings, and equipment. This has the effect of allowing mass production to be carried out in a rational and efficient manner.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a conductive decorative laminate according to an embodiment of the present invention, FIG. 2 is a side view showing one step of the manufacturing method of the conductive decorative laminate of the present invention, and FIG. Side view of the process state "Figure 4 is a side view showing one step in the method for manufacturing a decorative board with a wood grain pattern, and Figure 5 is a side view showing the next process state. 1... of the decorative board Board, 2...Surface, 3...
... Back surface, 4 ... Conductive portion, 5 ... Conductive adhesive, 9 ... Conductive attachment layer. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. A conductive decorative board characterized in that a pattern is formed by conductive portions communicating on the front and back surfaces. 2. The conductive decorative board according to claim 1, wherein the pattern is a wood grain pattern. 3. A method for manufacturing a conductive decorative board, which comprises laminating and bonding a plurality of insulating boards via a conductive adhesive layer to form a frit, and slicing the frit to create a conductive decorative board with a wood grain pattern.