JPH0383642A - Decorative panel and preparation thereof - Google Patents

Abstract

PURPOSE:To obtain a decorative panel having the glossy feeling and deep quality feeling possessed by natural wood by forming filamentary unevenness to a brilliant layer itself and forming a grain pattern layer and the brilliant layer so as to sandwich a transparent resin layer between both layers with difference in level. CONSTITUTION:A grain pattern layer and a transparent colored solid ink layer 6 are provided to the surface of paper 5 becoming transparent by the impregnation with a thermosetting resin. Subsequently, a transfer foil containing a brilliant layer 3 having filamentary unevenness 14 formed thereto is transferred to the rear of the paper 5 to obtain a desired printed sheet. This sheet is impregnated with a thermosetting resin to prepare printed impregnated paper 7 and a base material 8 is laminated to the rear of the printed impregnated paper 7 while transparent impregnated paper 9 is laminated to the surface thereof if necessary and the whole is heated and pressed by hot plates 13 to obtain a desired decorative panel.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to thermosetting resins such as melamine resin decorative boards and diallyl phthalate resin decorative boards, which are widely used in furniture, desks, tables, architectural interiors, etc. The present invention relates to decorative laminates, and more specifically to decorative laminates that have a texture and texture that is extremely similar to natural wood, and a method for manufacturing the same.

[Prior Art] Conventionally, as a method of expressing the texture and material feel of natural wood on this type of decorative board, marks were printed with ink containing glittering materials such as burl pigments and fine metal powders! i1m
A method using (for example, Japanese Patent Publication No. 61-29786) is known.

[Problems to be Solved by the Invention] However, although this conventional method uses a glittering material, it is possible to express the texture of natural wood, but the layer containing the glittering material Because it is flat, it lacks the deep texture of natural wood.

The present invention was made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a decorative board that has both the texture and deep material feel of natural wood, and a method for manufacturing the same.

[Means for Solving the Problems] In order to achieve the above object, the decorative board according to the present invention has a wood grain pattern layer and a transparent colored solid ink layer on the surface of paper that becomes transparent by impregnating it with a thermosetting resin. Light I! is provided with a thin line-like unevenness formed on the back side. Il! The printing sheet is made by impregnating a thermosetting resin onto a printing sheet on which a transfer layer including a layer has been transferred, and a base material is laminated on the back side of the printing impregnated paper, and transparent impregnated paper is laminated on the front side as required. Specifically, the decorative board according to the present invention has a wood grain pattern layer and a transparent colored solid ink layer on the surface of paper that becomes transparent by impregnating it with a thermosetting resin, and on the back side,
A printing sheet obtained by transferring a transfer foil containing a glitter layer with fine linear irregularities is impregnated with a thermosetting resin to produce printing impregnated paper, and a base material is placed on the back side of the printing impregnated paper. , and can also be obtained by laminating transparent impregnated paper on the front side, if necessary, and then heating and pressurizing.

In the present invention, a glittering layer with fine line-shaped (hairline-shaped) unevenness is provided below the wood grain pattern layer and the transparent colored solid ink layer through a transparent resin layer, thereby expressing a textured and deep material feel. I can do it.

In the present invention, paper that becomes transparent by impregnating it with a thermosetting resin is used to form a transparent resin layer, a wood grain pattern layer and a transparent colored solid ink layer are provided on the surface of the paper, and a thin line-shaped ink layer is provided on the back surface. Forms a bright layer with unevenness.

There are several ways to create fine line-like unevenness, such as embossing with an engraving plate and hairline processing, but either method can be used directly on the paper or with resin gold. It is difficult to process it later due to tearing, cracking, etc.

The present invention is characterized by forming a glitter layer having fine line-like unevenness on the back side of the paper by transferring a transfer foil on which a glitter layer has been formed along the fine line-like uneven shape of the base film to the above-mentioned paper. There is. Note that the depth of the fine line-shaped unevenness of the optical layer is preferably about 0.5 to 5 μm in consideration of the unevenness effect of the bright layer. Further, the wood grain pattern layer and the transparent colored solid ink layer may be printed before or after the transfer foil is transferred.

The present invention will be further described below with reference to the drawings.

FIG. 1 is a sectional view of the transfer foil in the present invention. 1 is a base film that serves as a base material for the transfer foil, and can be made of polyester film or polypropylene film with a thickness of 9 to 75 μm in consideration of surface smoothness and heat resistance, and one side thereof has a base film with a depth of 0.5 μm. Thin line-shaped unevenness 14 is formed by performing hairline processing or the like so that the thickness becomes ~5μ.

2 is a release layer, which can be made of nitrified cotton resin, cellulose acetate resin, etc. in consideration of moderately light release force with the base film 1 and adhesion with the thermosetting resin. It can be formed by printing or the like. 3 is a glittering layer, which can be formed by solid gravure printing with an ink containing a glittering material such as Burr pigment or fine metal powder, or by vacuum deposition of aluminum, chromium, or the like.

4 is a heat-sensitive adhesive layer, which can be made of, for example, polyamide resin, ethylene vinyl acetate copolymer resin, etc., and can be formed by solid gravure printing or the like.

FIG. 2 is a cross-sectional view of a printing sheet in which a wood grain pattern and a transparent colored solid ink layer are printed on paper. The paper No. 5 needs to become transparent when impregnated with a thermosetting resin, and for example, rayon pulp paper having a basis weight of about 55 to 1200/width can be used. 6 is a printing ink layer for the wood grain pattern and transparent coloring. Solid printing requires the use of transparent ink to highlight the brightness of the underlying glitter material.

FIG. 3 is a cross-sectional view when the transfer foil shown in FIG. 1 is placed on the back side of the first printing sheet shown in FIG. 2, transferred by hot pressure, and the base film is peeled off.

By applying heat and pressure from the base film 1 side of the transfer foil, the heat-sensitive adhesive 4 melts and adheres to the paper 5. The base film 1 itself is not changed by the heat during transfer, and the uneven shape of the surface is transferred without changing.
182 and glitter 13 are also not changed by the heat during transfer, and are transferred while maintaining the same uneven shape.

FIG. 4 is a sectional view showing a method of manufacturing a typical melamine resin decorative board among thermosetting resin decorative boards. That is, upper and lower heat sections 13.13, heat-resistant cushion seats 1 to 12.1
2 and the mirror plate 11.11, there is a backer @10. Core@8, printed impregnated paper 7 and overlay paper 9 are laminated in order from the bottom. The backer paper 10 has a basis weight of 55 to 160 mm.
' titanium paper impregnated with 40-100% melamine resin,
Yu-core paper 8, which is a dry impregnated paper and plays the role of preventing warping of the decorative board, is the base material for the melamine resin decorative board, and is a paper with a basis weight of 140 to 180 g/l' and a phenol resin of 30 to 30%. It was impregnated with 60% and dried.

Further, the core paper 8 determines the thickness of the melamine resin decorative board, and approximately 4 to 5 sheets are used in a stacked manner. Printing impregnation VH7 is 40% of melamine resin applied to the printing sheet shown in Figure 3.
~100% impregnated and dried. Overlay paper 9 is tsubo! It is a transparent resin-impregnated paper obtained by impregnating 25 to 45 g/f of rayon pulp paper or nonwoven fabric with 40 to 100% melamine resin and drying it, and it can be removed depending on the case.

After laminating in this state, heat and pressure is applied, for example, at a maximum temperature of 14
The resin impregnated into each layer of layers 7 to 10 is formed by heating and pressure molding at 0 to 150°C, pressure 60 to 100 kg/C12, for 15 to 30 minutes, and cooling with cold water for 15 to 60 minutes under pressure. It is possible to obtain a melamine resin decorative board in which the melamine resin is cured and integrated.

The decorative board obtained in this manner has a transparent resin layer sandwiched between the wood grain pattern layer and the transparent colored solid ink layer, and has a glitter layer with fine line-like unevenness, giving it a textured and deep material feel. It is a decorative board that is extremely similar to natural wood.

[Example] An example of the present invention will be described below.

As shown in Figure 1, the base film 1 is a transparent polyester film with a thickness of 25 μm that has been processed with hairlines to form fine line-like irregularities to a depth of 0.5 to 2 μm. A release varnish layer 2 of nitrified cotton yarn was applied to a thickness of 1 μm by solid gravure printing. Furthermore, after providing a glitter layer 3 by vapor depositing aluminum to a thickness of 600A using a vacuum evaporation machine, a polyamide-based heat-sensitive adhesive was applied to a thickness of 2.5μ by gravure solid printing to form an adhesive layer. 4 was formed to obtain a transfer foil.

Next, as shown in Figure 2, oak pattern printing and transparent yellow solid printing were performed using cellulose acetate ink on 1180 g/f rayon pulp paper using a four-color gravure printing machine to create a wood grain pattern. A printing ink layer 6 was formed to obtain a printing sheet.

Next, the adhesive layer side of the transfer foil is placed on the back side of the above printing sheet so that it is in contact with the back side of the transfer foil, and the transfer is performed by applying pressure with a heating roll at 180°C, and after being cooled with a cooling roll, the transfer foil is The base film was peeled off to obtain a printed sheet as shown in FIG.

This obtained printing sheet was further impregnated with 60% Melakun resin and dried to obtain printing impregnated paper 7.

Next, as shown in Fig. 4, between the upper and lower heat sections 13.13, heat-resistant cushion sheets 12.12, and mirror plates 11.11, 10.4 sheets of white backer paper and core paper 8 are then printed After laminating the impregnated paper 7 and the overlay paper 9, the melamine resin and the phenol resin were cured by heating and pressure molding at a maximum temperature of 145° C. and a pressure of 80 kiJ/Cf for 25 minutes, followed by cooling with water for 20 minutes under pressure. An integrated melamine resin decorative board was obtained.

The obtained melamine resin decorative board has an oak pattern layer and a yellow bright layer with fine linear irregularities sandwiched between the oak pattern layer and the transparent resin layer, and has a texture and depth very similar to natural wood. It had a certain material feel.

[Effects of the Invention] As explained in detail above, according to the present invention, the light 7Il
18 linear irregularities are formed on the ll itself, and the wood grain pattern layer and the light 1i1ti are formed with steps across the transparent resin layer, creating the texture and deep material feel of natural wood. A decorative board having the following characteristics is obtained. Moreover, since the present invention provides the optical IIi layer in the lower layer of the pattern of the printed sheet, it also has the effect of very good concealability against the color of the base material to which the decorative board is attached.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, in which Fig. 1 is a cross-sectional view of a transfer foil, Fig. 2 is a cross-sectional view of a printing sheet with a wood grain pattern printed on paper, and Fig. 3 is a cross-sectional view of the printing of Fig. 2. A cross-sectional view of a printing sheet obtained by transferring the transfer foil shown in FIG. 1 onto a sheet, and FIG. 4 is a cross-sectional view showing a method of manufacturing a melamine resin decorative board. 1... Base film 2... Peeling 11 layers 3...
Bright layer 4... Adhesive layer 5... Paper
6...Printing ink layer 7...Printing impregnated paper
8...Core paper 9...Overlay paper 10...Backer paper 11...Mirror plate 12...
・Heat-resistant cushion sheet

Claims (2)

[Claims] (1) A wood grain pattern layer and a transparent colored solid ink layer are provided on the surface of paper that becomes transparent by impregnating it with a thermosetting resin, and a transfer foil containing a glitter layer with fine line-like unevenness formed on the back surface. A decorative board made by laminating a printing impregnated paper made by impregnating a transferred printing sheet with a thermosetting resin, a base material on the back side, and a transparent impregnated paper on the front side as required. (2) A wood grain pattern layer and a transparent colored solid ink layer are provided on the surface of the paper, which becomes transparent by impregnating it with a thermosetting resin, and a transfer foil containing a glitter layer with fine line-like unevenness formed on the back surface. The printing sheet obtained by the transfer is impregnated with a thermosetting resin to produce printing impregnated paper, and a base material is laminated on the back side of the printing impregnated paper, and transparent impregnated paper is laminated as necessary on the front side. A method for manufacturing a decorative laminate, which comprises heating and pressurizing the laminate.