JPH0221937B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board, and particularly to a method for manufacturing a decorative board that resembles natural wood.

For decorative boards made by pasting conventional woodgrain printing films onto substrates such as plywood, a method is used in which the spring wood portion and the autumn wood portion are printed with the same resin ink with different tones, and the wood grain is expressed by the color tone and printing style. ing. Another method has been to print part of the pattern using pearl ink, but this method falls short of the texture of natural wood.

Wood grain decorative films are usually printed by gravure printing using natural wood as a manuscript, but due to limitations in the resolution of photoengraving, the color development of ink, and the unilateral slipperiness of printing paper, It is not possible to accurately reproduce the surface texture. In addition to its color shading, this natural wood has a luster that is reflected by its fine surface structure, and it is impossible to express this fine luster.

Therefore, the present inventor has discovered that by pasting a printed film printed using a specific method onto a substrate such as plywood and applying polyester resin thereon, a gloss that is even closer to that of natural wood can be obtained than with conventional decorative laminates. discovered. This luster is thought to be due to the light transmission properties and solid feel of the polyester resin applied to the surface, as well as the pearl pigments used in printing and the embossing process.

That is, the present invention applies an anchoring agent to a plastic film, then prints an ink or paint containing a pearl pigment on the entire surface, and then prints a wood grain pattern.
This method of manufacturing a decorative board is characterized by adhering a printed film obtained by embossing onto a substrate such as plywood, and further coating the surface with a polyester resin.

The plastic film according to the present invention includes:
For example, it is a polyvinyl chloride film, and an isocyanate-based anchor agent can be used as the anchor agent. When directly printing on polyvinyl chloride, an ink using salt-vinyl acetate as a binder can be considered, but in this case, an anchor agent that has good adhesion to the polyester resin is used on the printing surface.

Further, any ink containing a pearl pigment may be used, but for example, an ink containing a nitrocellulose resin as a binder mixed with 20 to 30 parts of a pearl pigment per 100 parts of resin can be used. The wood grain pattern can be printed using one to three color inks using the same method as the conventional method, and the pearl pigment-containing ink and wood grain printing can be printed continuously using the same gravure multicolor printing machine. Can be printed. The wood grain pattern may be printed so as to cover the entire surface of the pearl ink layer, but in this case, the luster of at least a portion of the pearl pigment must be visible through the wood grain pattern. Alternatively, printing may be performed so that only a portion of the pearl ink layer is covered with a wood grain pattern.

After printing, embossing is performed using a hot pressure plate or a hot pressure roll. The embossing is to form a recess with a depth of about 60 μm in the conduit portion, and it is preferable to press a template or a template roll from the printing surface to embossing, but it may also be performed from the back side. This embossing changes the reflection angle of the pearl pigment, making it look more like natural wood. As for the shape of the mold used for this embossing, a fine discontinuous pattern having a hairline or silk-like shape is suitable.

The printed film obtained in this way was coated with ethylene-
Attach to a substrate such as plywood using vinyl acetate or acrylic adhesive. The adhesive may be applied to the substrate or printed film. Appropriate coating amount is about 60 to 70 g/m ² .

After this, polyester resin is applied to the surface of the printing film. The surface coated with polyester resin is desirably smooth and its thickness is thicker than the embossing depth, for example 80μ to 200μ.

The present invention has the above-described structure, and by combining the pearl pigment and embossing with the luster of the polyester resin, it is possible to obtain a decorative board that is extremely similar to natural wood.

Claims (1)

[Claims] 1. After applying an anchoring agent to a plastic film, ink or paint containing a pearl pigment is printed on the entire surface, then a wood grain pattern is printed on the surface, and the resulting printed film is then embossed on a substrate such as plywood. A method for manufacturing a decorative board, which comprises: adhering it to the top, and then applying a polyester resin to the entire surface so that the surface is smooth and the thickness is thicker than the depth of the recesses formed by the embossing process.