JPS62290533A - Decorative board - 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 3. Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a decorative temporary adhered to the surface of a base material such as plywood or asbestos board.

(Prior art and its problems) Conventionally, decorative paper is pasted on the surface of H goods such as plywood or asbestos board, and after hot press molding, polyester resin is applied on the decorative paper, and then a polyester resin is applied on top of this. Polyester decorative plywood formed by laminating vinylon films and curing at room temperature is known.

As mentioned above, this decorative plywood product is formed based on plywood, so it is difficult to bend it, and if the plywood has a curved surface from the beginning, it will not be possible to apply polyester resin uniformly, so it is difficult to bend it. We can only manufacture things;
There was a problem in that it lacked design in terms of shape.

On the other hand, sheet-like decorative laminates such as melamine or DAP are known, which are manufactured separately from a base material such as plywood. After this decorative board is formed as a finished product by itself, it is attached to the surface of plywood 1, asbestos board, etc. for decorative purposes. When this decorative board is attached to plywood, it becomes a product similar to the above-mentioned decorative plywood, and like this decorative plywood, it cannot be bent freely and becomes deaf, but this decorative board itself is Since it is a finished product, it is easier to process curved surfaces. That is, by making a base material such as plywood or asbestos board into a curved shape in advance and pasting the decorative board along the curved shape, the final product can be formed into a curved shape.

However, in order to attach this decorative laminate to the base material, it is necessary to apply an adhesive to the base material, bond the decorative laminate thereon, and then heat and cure the adhesive. For this reason, a hot press and a mirror plate for surface smoothing are required at the stage of adhering to plywood, making manufacturing equipment large-scale and expensive, and manufacturing operations also complicated.

Furthermore, due to these circumstances, this decorative board is not suitable for small-lot production, and the variety of products must be reduced.

Furthermore, due to the material and the fact that the thickness cannot be made very small (minimum thickness: approximately 0.5 mm), decorative boards do not have sufficient flexibility or elongation, making them unusable for bending processes with large curvatures. (minimum radius of curvature of 5 mm), there were problems such as the curved surface shape to which this decorative board could be used was limited.

(Object of the invention) The present invention has been made in view of the above-mentioned conventional problems.
The purpose is to provide a decorative board that can simplify the manufacturing process, reduce thickness, and facilitate curved surface processing.

(Structure of the Invention) In order to achieve the above object, the present invention provides a base sheet layer in which kraft paper or base paper is adhered and impregnated with an acrylamino alkyd resin, an adhesive layer on this base sheet β, and an adhesive layer on this base sheet β. It was formed from a decorative paper layer adhered to the base sheet layer via a layer, and a polyester resin layer coated on the decorative paper layer and cured at room temperature.

(Example) Next, one embodiment of the present invention will be described with reference to the drawings.

In the figure, l indicates a decorative board according to the present invention, which includes a base sheet layer 2, an adhesive layer 3 on this base sheet layer 2,
It consists of a decorative paper layer 4 adhered via this adhesive layer 3 and a polyester resin layer 5 on this decorative paper layer 4.

The specific constituent materials of these are as follows.

■Base sheet layer 2 Obtained by adhering and impregnating kraft paper or base paper (approximately lo g/m') with approximately 40% acrylamino alkyd resin.

■ Adhesive layer 3 Adhesive: EVA modified adhesive whose main component is ethylene-vinyl acetate copolymer resin Viscosity: 20,000±5,000cp Concentration ・50±
2% PH: 5±1 Coating amount: Approx. 90g (weight when applied)/m ”■ Decorative paper layer 4 Printing paper (20-80g 7m”) ■ Polyester resin layer 5 Evolac 5P-360 (Product name Nippon Shokubai Kagaku) (manufactured by Kogyo Co., Ltd.) Next, a method for manufacturing the decorative board 1 will be described.

First, in the first step, an ethylene-vinyl acetate copolymer resin adhesive is applied onto the base sheet layer 2 made of kraft paper or base paper impregnated with an acrylamino resin using, for example, a gluing machine to form an adhesive layer 3. Form. The amount of adhesive applied is preferably about 90 g/m'.

In the second step, apply decorative paper (approx.
The decorative paper layer 4 is formed by pasting together 0g/m pieces and pasting them by hot pressing. The press conditions in this case are: press temperature = 80 to 90°C, press pressure approximately 5 kg/
am'', press time = 2 to 3 minutes.

In the third step, the decorative paper layer 4 is constantly heated under 4L (approximately 25°C).
Above, the above Evolac 5, which is an example of polyester resin, is shown.
P-360 is applied and polyester resin impregnation molding is performed using a film molding method. The amount of polyester resin applied is about 200 g, 7 m', and the viscosity is preferably about 2.0 Stokes.

In the fourth step, keep the coated resin at room temperature (approximately 25℃).
Gel and cure under. The gelation time is preferably about 3.5 minutes.

In the fifth step, the gelled material is removed from the film.

In the sixth step, the film is removed; the removed film is cut into a standard size (for example, 3 x 6 shaku) to form a product.

As a result of actually manufacturing the decorative board 1 through the above steps, it was possible to obtain a product with a finished thickness of 0 and 3 ++ un.

Furthermore, it was confirmed that this decorative board 1 had sufficient flexibility to withstand bending with a radius of curvature of 2 mm.

In addition, in the decorative board 1, by coloring the polyester resin, the pattern overlaps with the pattern of the decorative paper layer 4, and the decorativeness can be improved. Furthermore, if the surface of the film used in the film molding method (for example, Tetron film) is appropriately embossed, the pattern and the pattern will be transferred to the polyester resin layer 5, making it possible to make the surface shape rich in variation. .

(Effects of the Invention) As is clear from the above description, according to the present invention, a base sheet layer is formed by adhering and impregnating acrylic amino alkyd resin on kraft paper or base paper, and an adhesive layer on this base sheet layer. The decorative paper layer is laminated onto the base sheet layer via the adhesive layer, and the polyester resin layer is coated on the decorative paper layer and cured at room temperature. Since the polyester resin layer is formed by curing at room temperature in this manner, the manufacturing process is simple and suitable for small loft production, making it possible to easily produce products that meet the needs of various users.

In addition, the thickness of the decorative board can be reduced, and combined with the good elongation rate of the polyester resin layer, flexibility is improved and it is difficult to break even when bent at a large curvature, making it possible to process a wide variety of curved surfaces. This has advantages such as being able to be applied to end face processing.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a decorative board according to the present invention. ■... Decorative board, 2... Base sheet layer, 3... Adhesive, 4... Decorative paper layer, 5... Polyester resin layer.

Claims (1)

[Claims] (1) A base sheet layer made of kraft paper or base paper adhered and impregnated with acryl amino alkyd resin, an adhesive layer on this base sheet layer, and a decorative paper stuck on the base sheet layer through this adhesive layer. A decorative board comprising a layer and a polyester resin layer coated on the decorative paper layer and cured at room temperature.