JPS5918204B2 - Manufacturing method of acrylic film fused decorative board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board in which an acrylic film is fused onto a base material.

Conventionally, decorative laminates used for building materials, etc. have been manufactured by pressing a plastic film coated with an adhesive onto a substrate surface with a pattern, or by pressing a plastic film with a pattern onto a substrate surface coated with an adhesive. Ta.

However, in these conventional methods, each process such as printing or sublimation transfer of a pattern, application of adhesive, bonding of a film, and top coating is performed separately and sequentially, making the process complicated and difficult to manage. Furthermore, these conventional methods used adhesive between the film and the substrate, which had the disadvantage that the ink forming the pattern was easily dissolved by the solvent remaining in the adhesive. . SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, it is an object of the present invention to provide a method for manufacturing decorative laminates that is simple, efficient, and of stable quality. ″0 The present invention is characterized in that by using a thermoplastic acrylic film, sublimation transfer and film bonding can be performed simultaneously without using an adhesive.

Specifically, a substantially transparent acrylic film 15 is placed on a base material 2, and a transfer paper 4 on which an arbitrary pattern is printed with sublimation dye ink 3 is placed on the transfer paper 4 whose printed surface is the acrylic film 1. Place it so that it is in contact with the

Thereafter, by heating and pressurizing this, a decorative board 5 with the rear acrylic film 1 heat-sealed is obtained. 20 transfer paper 4 is finally peeled off.

In another method, a substantially transparent acrylic film 11 printed with an arbitrary pattern using sublimation ink 13 is placed on the base material 12 so that the printed surface is in contact with the base material 12, and then heated and pressed. A decorative board 15 is obtained by heat-sealing the acrylic film 25 and the film 11.

In any of the above-mentioned specific methods, the sublimable dye ink is sublimated and fixed in the acrylic film by heat and pressure, and at the same time, the acrylic film is thermally fused to the base material. 3
The acrylic film used is a film made of a polymer of acrylic acid or methacrylic acid, or a derivative thereof such as an ester thereof, and is a substantially transparent colorless or colored film.

The base material is plywood, veneer, slate board, steel plate, aluminum 35 board,
It may be a resin plate or other conventionally used base material, and is not particularly limited. Sublimable dye ink is an ink prepared by blending sublimable dyes such as conventionally known dispersible dyes, which sublimates when heated, penetrates into the acrylic film, and becomes fixed.

This sublimable dye is formed into an arbitrary pattern by printing means such as gravure printing and screen printing. Therefore, heat and pressure must be carried out at sufficient temperature, pressure, and holding time for the sublimation dye ink to sublimate and fix in the acrylic film and for the acrylic film to partially melt and fuse with the base material. No.

Specifically, it varies depending on the material used, but it is about 160~
A temperature of 220°C, a pressure of 0 to about 6k9/Cd and a temperature of about 30
Hold times of ˜120 seconds are preferred. In order to facilitate and strengthen the fusion bond between the base material and the acrylic film, an acrylic-urethane resin paint 6 or 16 is applied in advance to the surface of the base material 4 or 14 on the side to be fused to the acrylic film 1 or 11. It may be applied and cured or semi-cured.
In addition, in the method shown in FIG. 2, if a layer of the acrylic-urethane resin paint 16 is provided, the sublimable dye ink 13 is applied to the acrylic-urethane 1 layer by the heating and pressurization.
Since it is sublimated and fixed even in the 6th grade, a deeper pattern can be obtained. Further, the decorative board to which the acrylic film of the present invention is fused may be provided with a top coat 7 or 17 of an acrylic-urethane resin paint in order to protect the surface and further improve the aesthetic appearance.

According to the present invention, by using an acrylic film, it can be bonded to a base material without using an adhesive by utilizing its thermal adhesive properties, and the sublimation dye ink is contained in this film. Since it is sublimated and fixed, a decorative board with a clear, deep and aesthetically excellent pattern can be obtained.

Furthermore, the method of the present invention is simpler than the conventional method, and in particular, the method shown in FIG. 2 is extremely efficient because even the transfer paper can be omitted. Therefore, process control is easy, including not using adhesives, and the quality of the product is stable. Furthermore, if plywood or veneer is used as the base material, a patterned film can be directly fused to it without the use of adhesives, so the skin of the natural wood can be utilized as is and a decorative board with a natural feel can be obtained. Next, the present invention will be explained with reference to examples.

) Example 1 A wood grain pattern was printed on special Cormoland paper (manufactured by Fuji Kakoshi Co., Ltd.) using sublimation dye ink (manufactured by Toyo Ink Co., Ltd.) to prepare a transfer paper.

On the other hand, an acrylic-urethane resin paint (manufactured by Kansai Paint Co., Ltd.) was applied to lamin plywood at a ratio of 49/shaku2 (wet) and dried in an oven at 80°C for 10 minutes to form a transparent base material. 50μ thick acrylic film (Nippon Carbide)
Co., Ltd.). Furthermore, place the above transfer paper on top of this so that the printed surface is in contact with the acrylic film, and heat it at 180°C.
The sublimable dye ink was sublimated and fixed into the acrylic film by heat pressing under the conditions of , 4k9/Crill, and 60 seconds, and at the same time, the acrylic film was bonded to the base material by heat fusion. After taking it out of the press and letting it cool, peel off the transfer paper.
Acrylic-urethane resin paint was applied using a roll coater to protect the surface. A decorative board with a clear pattern and an excellent wood texture was obtained. Example 2 A wood grain pattern was printed on HiS A film (manufactured by Nippon Carbide Co., Ltd.), which is an acrylic film with a thickness of 50 μm, using sublimation dye ink (manufactured by Toyo Ink Co., Ltd.).

On the other hand, an acrylic-urethane resin paint (manufactured by Kansai Paint Co., Ltd.) was applied to the plywood at a rate of 4 g/shaku2 (wet) using a roll coater, and dried for 10 minutes in an 8"C oven. The printed surface of the acrylic film was superimposed on the paint surface of the obtained base material, and
The sublimable dye ink was sublimated and fixed on both the acrylic film and the acrylic-urethane resin layer by heat pressing using a flat pressure press for 60 seconds, and at the same time, the acrylic film was thermally fused to the base material. After cooling, an acrylic-urethane resin paint was applied using a roll coater to protect the surface and improve aesthetic appearance, resulting in a decorative board with a deep and clear pattern.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic process diagrams showing the method for manufacturing a decorative board of the present invention, respectively. 1,11... Acrylic film, 2,12...
... Base material, 3, 13 ... Sublimation dye ink, 4 ... Transfer paper, 5, 15 ... Decorative board of the present invention.

Claims (1)

[Claims] 1. A substantially transparent acrylic film is placed on a base material,
Furthermore, by placing a transfer paper on which a desired pattern is printed with sublimable dye ink so that the printed surface is in contact with the acrylic film and applying heat and pressure, the sublimable dye ink is sublimated into the acrylic film. A method for producing a decorative board, which comprises heat-sealing the acrylic film to the base material at the same time as fixing the acrylic film. 2. A substantially transparent acrylic film printed with an arbitrary pattern using sublimable dye ink is placed on the base material so that the printed surface is in contact with the base material, and heated and pressurized to apply the sublimable dye ink to the base material. A method for producing a decorative board, which comprises sublimating and fixing the acrylic film into the acrylic film and heat-sealing the acrylic film to the base material at the same time.