JP2888344B2 - Method for forming three-dimensional pattern and three-dimensional pattern forming body - Google Patents

Description

The present invention relates to a method for forming a three-dimensional pattern and a three-dimensional pattern forming body.

[Problems to be solved by conventional technology and invention]

Conventionally, in order to give a three-dimensional effect to a pattern provided on a smooth surface, it has been performed to give the pattern itself a thickness, but a special printing method is required to give the pattern a thickness. In addition, it is difficult to form a sharp protrusion, and there is a problem that a beautiful three-dimensional pattern cannot be easily formed.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned drawbacks of the prior art, and provides a method of forming a three-dimensional pattern and a three-dimensional pattern forming body capable of easily forming a sharp three-dimensional pattern. The purpose is to provide.

That is, the present invention provides: (1) a method of forming a three-dimensional pattern, wherein the following steps (a) to (d) are sequentially performed a plurality of times.

(A) a step of preparing a transfer sheet having a colored layer on the release surface of an ionizing radiation-permeable release substrate having a release property on the surface;

(B) a step of laminating the transfer sheet and the substrate to be transferred via an ionizing radiation-curable transparent resin layer.

(C) a step of irradiating the transfer sheet with ionizing radiation from the ionizing radiation-permeable sheet side to cure the ionizing radiation-curable transparent resin layer.

(D) a step of peeling the release substrate to form an ionizing radiation-curable transparent resin layer in which the colored layer is in close contact.

(2) A three-dimensional pattern formed body comprising at least two sets of an ionizing radiation-curable transparent resin layer and a colored layer sequentially laminated on the surface of a substrate to be transferred.

(3) The three-dimensional pattern-formed body according to (2), wherein a transparent protective layer is formed on the outermost colored layer surface.

It is the gist.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a transfer sheet 1 used in the method of the present invention.
Is provided. The release substrate 2 is made of a sheet or a film having an ionizing radiation transmitting property, for example, a sheet or a film of polyester, polyamide (such as Ninelon), polypropylene, or a fluororesin. And the like that do not contain such as are preferred. When the ionizing radiation is an electron beam, there is no particular limitation because the electron beam has high transparency, and the above-mentioned sheet or film can be used in principle, and paper and the like can be used.

At least the surface of the release substrate 2 on the side in contact with the ionizing radiation-curable transparent resin layer needs to be releasable. If the material itself does not have releasability, a releasable resin or a composition is applied. And used as surface peelability. The thickness of the release substrate 2 is preferably 5 to 200 μm, particularly preferably 25 to 100 μm.

The colored layer 3 may be a pattern, a design, a picture, or the like, or may be a solid colored layer, and can be formed by applying a known method using an ordinary ink.

As shown in FIG. 2, the transfer sheet 1 is superimposed on and adhered to an ionizing radiation-curable transparent resin layer 4 side of a transfer-receiving substrate 5 provided by applying a separately prepared ionizing radiation-curable transparent resin layer 4. (FIG. 3). The ionizing radiation-curable transparent resin layer 4 may be applied to both the transfer substrate 5 and the release substrate 2 in addition to the case where the ionizing radiation-curable transparent resin layer 4 is applied and provided on the transfer substrate 5. You may provide. As the base material 5 to be transferred,
Anything can be used, such as stainless steel,
Metal plate or molded product such as steel, aluminum or copper, glass, marble, ceramic, gypsum board, asbestos cement plate, calcium silicate plate, inorganic plate or molded product such as GRC (glass fiber reinforced cement), polyester,
Examples thereof include boards and molded articles of organic polymers such as melamine, polyvinyl chloride and diallyl phthalate, and wood boards and molded articles such as sheets, films, wood, plywood and particle boards. The transfer-receiving substrate 5 may be subjected to a base treatment such as a filling treatment or a primer treatment, a treatment for improving adhesiveness, or the like.

The ionizing radiation-curable transparent resin layer 4 is mainly composed of a polymer, oligomer, monomer, or the like having a radical polymerizable double bond in the structure, and includes a photopolymerization initiator, a sensitizer, and other non-reactive Containing various polymers, organic solvents, waxes and other additives. Various grades are easily available from the market and can be used in the method of the present invention. The ionizing radiation-curable transparent resin layer 4 is a gravure coat,
It can be formed by a known method such as roll coating, flow coating or spray coating. The thickness of the resin layer 4 is preferably 3 μm to 1 mm, particularly preferably 30 μm to 200 μm.

After the release substrate 2 and the transfer-receiving substrate 5 are overlapped with each other via the ionizing radiation-curable transparent resin layer 4 so that they are in close contact with each other, ionizing radiation 6 is irradiated from the release substrate 2 side. Ionizing radiation 6
Are ultraviolet rays and electron beams, but others can be used. The irradiation of the ionizing radiation 6 cures the ionizing radiation-curable transparent resin layer 4. When the release substrate 2 is peeled off after the irradiation of the ionizing radiation 6, the colored layer 3 is transferred to the cured ionizing radiation-curable transparent resin layer 4 (FIG. 4).

Next, as shown in FIG. 5, an ionizing radiation-curable transparent resin layer 4a is applied on the surface of the substrate 5 to be transferred, and the transfer sheet 1a is further superimposed on and adhered to the ionizing radiation-curable transparent resin layer 4a side. (FIG. 6). Thereafter, after the ionizing radiation is irradiated from the release substrate 2a side to cure the ionizing radiation-curable transparent resin layer 4a, the release substrate 2a is peeled off, and as shown in FIG.
The three-dimensional pattern forming body 7 of the present invention in which 3, 3a are present at predetermined intervals in the thickness direction of the layer is obtained. The obtained formed body 7 has a deep three-dimensional pattern and is excellent in design.

In the above embodiment, the case where the three-dimensional pattern is formed by performing the transfer twice has been described. However, the method of the present invention is not limited to this, and it is possible to form the three-dimensional pattern by performing the transfer three or more times. In addition, the three-dimensional pattern forming body of the present invention is not limited to one having two colored layers, and may have three or more colored layers.

In this way, a three-dimensional pattern is formed by the method of the present invention. In order to protect the three-dimensional pattern surface, as shown in FIG.
A protective layer 8 can also be provided. The protective layer 8 can be formed of the same ionizing radiation-curable transparent resin as described above, or may be formed of a thermosetting transparent resin.

Hereinafter, the present invention will be described in more detail with reference to specific examples.

Specific Example An ultraviolet curable paint (manufactured by Nippon Paint Co., Ltd.) was flow-coated to a thickness of 100 μm on an inorganic plate having a surface treated with an alkali stopper sealer. Next, a transfer sheet having the following specifications was overlaid on the ultraviolet-curable paint so that the pattern ink layer was in contact with the paint.

Transfer sheet specifications Release substrate: Toray Industries, Inc. polyester film (50 μm) Colored layer: An abstract pattern was printed using a clear colored ink of Morohoshi ink.

After that, five 80W / cm ozoneless UV lamps were installed.
The UV curable paint was cured at the portion in contact with the transparent ink by passing through a UV irradiation line at a speed of 20 m / min, and the release film of the transfer sheet was peeled off.

Thereafter, the above-mentioned ultraviolet-curable coating material was flow-coated again with a thickness of 100 μm, the above-mentioned transfer sheets were stacked, and the above-mentioned UV irradiation line was passed under the same conditions to peel off the release substrate.

Further, the above-mentioned ultraviolet curable paint was flow-coated with a thickness of 60 μm and cured under the above-mentioned conditions to provide a transparent protective layer.

The decorative board obtained was a good design having a deep three-dimensional pattern and excellent in surface physical properties.

〔The invention's effect〕

As described above, according to the method of the present invention, a sharp three-dimensional pattern can be easily formed.

Further, the three-dimensional pattern formed body of the present invention is a formed body having sharp swelling and having a glassy texture and rich in design.
Further, by providing a transparent protective layer on the surface of the colored layer, it is possible to improve the chemical resistance, abrasion resistance and the like of the surface of the three-dimensional pattern formed body.

[Brief description of the drawings]

1 to 6 are explanatory views for explaining the method of the present invention, and FIGS. 7 and 8 are longitudinal sectional views showing the three-dimensional pattern forming body of the present invention. 1,1a transfer sheet 2,2a release substrate 3,3a colored layer 4,4a ionizing radiation-curable transparent resin layer 5 transfer substrate 6 ionizing radiation 7 solid Pattern forming body 8: Transparent protective layer

Claims (3)

(57) [Claims] 1. A method for forming a three-dimensional pattern, wherein the following steps (a) to (d) are sequentially performed a plurality of times. (A) a step of preparing a transfer sheet having a colored layer on the release surface of an ionizing radiation-permeable release substrate having a release property on the surface; (B) a step of laminating the transfer sheet and the substrate to be transferred via an ionizing radiation-curable transparent resin layer. (C) a step of irradiating the transfer sheet with ionizing radiation from the ionizing radiation-permeable sheet side to cure the ionizing radiation-curable transparent resin layer. (D) a step of peeling the release substrate to form an ionizing radiation-curable transparent resin layer in which the colored layer is in close contact. 2. A three-dimensional pattern formed body comprising at least two sets of an ionizing radiation-curable transparent resin layer and a colored layer sequentially laminated on the surface of a substrate to be transferred. 3. The three-dimensional pattern formed body according to claim 2, wherein a transparent protective layer is formed on the surface of the outermost colored layer.