JP2709719B2 - Decorative plate and manufacturing method thereof - Google Patents

Description

The present invention relates to a decorative plate and a method for producing the same.

[Problems to be solved by conventional technology and invention]

Conventionally, decorative plates having various patterns on the surface of a base material are known, but in order to provide a pattern with a three-dimensional effect to such a decorative plate, it has been performed to give the pattern itself a thickness. . However, a special printing method is required to give the pattern a thickness, and it is difficult to form a sharp bulge, so that a beautiful three-dimensional pattern cannot be easily formed.

[Means for solving the problem]

The present invention has been made to solve the above-mentioned disadvantages of the prior art, and has as its object to provide a decorative board having a sharp three-dimensional pattern and a high design property, and a method for manufacturing the same.

That is, the present invention provides: (1) a method in which an ionizing radiation-curable resin layer having irregularities is provided on a substrate surface, and a colored layer is provided on a convex portion of the resin layer; A decorative plate comprising a transparent ionizing radiation-curable resin layer provided thereon, and an uneven pattern formed by a shaped film formed on the surface of the resin layer.

(2) A method for manufacturing a decorative board, comprising performing the following steps in order.

(A) A colored layer is provided on a releasable surface of an ionizing radiation-permeable sheet having a releasable surface, and an ionizing radiation shielding pattern is provided on either the front or back surface of the ionizing radiation-permeable sheet or on the surface of the colored layer. (B) laminating the transfer sheet and the substrate to be transferred via a transparent or translucent ionizing radiation-curable resin layer, (c) ionizing radiation transparency of the transfer sheet Irradiating ionizing radiation from the sheet side to cure the ionizing radiation-curable resin layer corresponding to a portion having no ionizing radiation shielding pattern; and (d) peeling off the ionizing radiation-transmissive sheet to remove the ionizing radiation-curable resin layer. A step of attaching a portion of the resin of the cured portion to the transparent sheet to remove the resin, and forming a cured portion in which the colored layer is in close contact with the transparent sheet; (F) irradiating ionizing radiation from the molding film side to cure the ionizing radiation-curable resin layer, with a transparent ionizing radiation-curable resin layer interposed therebetween. (G) a step of peeling off the imprinting film and expressing irregularities on the surface;

(3) After the ionizing radiation-permeable sheet of the transfer sheet is peeled off together with the ionizing radiation shielding pattern in the step (d) of the step (2), the peeled sheet is used as it is as a forming film, and the sheet (e) of the step (2) is used. The method for producing a decorative plate according to the above (2), wherein in the step, the imprinting film is overlapped via an ionizing radiation-curable transparent or translucent resin layer, and ionizing radiation is irradiated from the imprinting film side.

It is the gist.

〔Example〕

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

An example of the structure of the transfer sheet used in the method of the present invention is as follows.
Referring to the drawing, 1 is a transfer sheet, 2 is an ionizing radiation transmitting sheet, 3 is a colored layer, and 4 is an ionizing radiation shielding pattern. Ionizing radiation shielding pattern 4
Is for shielding the ionizing radiation when the ionizing radiation is irradiated from the upper surface side of the transfer sheet 1. In that sense, the position where the ionizing radiation shielding pattern 4 is provided is the ionizing radiation transmitting pattern in FIG. Upper or lower surface of sheet 2 or colored layer 3
The transfer sheet 1 may be located at any position when the transfer sheet 1 is accompanied by another layer.

When the ionizing radiation is ultraviolet light, examples thereof include a sheet or a film of polyester, polyamide (eg, nylon), polypropylene, and a fluororesin. However, those which do not contain a pigment or the like which has an effect on ultraviolet transmittance are preferable. When the ionizing radiation is an electron beam, there is no particular limitation because the electron beam has high transparency, and the above-described sheet or film having the property of transmitting ultraviolet rays can be used in principle, and paper or the like can be used.

Since the ionizing radiation-permeable sheet 2 supports the colored layer 3 so that it can be transferred, at least the side supporting the colored layer 3 needs to be releasable. Is used as a surface releasability by applying a releasable resin or composition. Sheet 2
Has a thickness of preferably 5 to 200 μm, particularly preferably 25 to 100 μm.

The coloring layer 3 is for transferring and forming on a substrate to be transferred, and is formed by using various paints or inks according to applications.

Further, the colored layer 3 is transparent to ionizing radiation because it needs to transmit ionizing radiation and cure an ionizing radiation-curable resin layer described later. When ionizing radiation is ultraviolet light, it is better to avoid excessive use of pigments and fillers that impede ultraviolet light transmission, in order to ensure ultraviolet light transmission, it is better to use pigments that are colored with dyes or have extremely small particle diameters. Good.

The coloring layer 3 may be formed as a uniform coloring layer (so-called solid layer) or may be provided in a pattern. In the method of the present invention, since a pattern can be formed by an ionizing radiation shielding pattern described later, a solid layer may be used, but a complicated pattern may be formed by printing. In that case, the colored layer itself is not a solid layer. It may be a pattern layer. The pattern layer may be a print layer of one color or a print layer of two or more colors.

The ionizing radiation shielding pattern 4 is a mask pattern for partially curing and raising the ionizing radiation curable resin layer.

As the material for forming the ionizing radiation shielding pattern 4, when the ionizing radiation is ultraviolet light, a substance that reflects and shields the ultraviolet light, for example, a filler such as titanium oxide, potassium sulfate, calcium carbonate, or a particle having a particle size of 0.3. An ink containing a pigment having a large hiding power of about 10 μm, a substance that absorbs ultraviolet rays, for example, an ultraviolet absorbent such as a benzophenol-based, salicylate-based, benzotriazole-based, or acrylonitrile-based, a light-absorbing pigment, carbon black, or an inorganic substance And an ink containing a quencher (for example, a metal complex salt or a hindered amine).
When the ionizing radiation is an electron beam, examples of the ink include the above-described inks and inks containing other pigments. The ionizing radiation shielding pattern 4 can be formed by a normal printing method using these inks.

Next, the above-described transfer sheet is overlaid on a transfer-receiving substrate 6 provided by applying, for example, an ionizing radiation-curable resin layer 5 separately prepared as shown in FIG. Is brought into contact with the ionizing radiation-curable resin layer 5 (third
Figure). The ionizing radiation-curable resin layer 5 may be provided on the transfer sheet 1 as described above, or may be provided on the transfer sheet 1 side, or may be provided on both the transfer sheet 1 and the transfer sheet 6.
When the resin layer 5 is formed on the transfer sheet 1 side, it is necessary to provide the resin layer 5 at least at a position where the resin layer 5 can be brought into contact with the base material 6 to be transferred. Is formed on the colored layer 3 (the lower surface of the colored layer in the figure).

As the substrate to be transferred 6, any material may be used.
For example, stainless steel net, net, aluminum or copper or other metal plate or molded product, glass, surrogate stone, ceramic, gypsum board, asbestos cement plate, calcium silicate plate,
Inorganic plates or molded products such as GRC (glass fiber reinforced cement), polyester, melamine, polyvinyl chloride,
Plates and molded products of organic polymers such as diallyl phthalate or their sheets, films, wood, plywood, wood boards such as particle board, molded products, tissue paper, bleached kraft paper, titanium paper, linter paper, paperboard, gypsum board paper, etc. Paper, polyethylene film, polypropylene film,
Plastic films such as polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, polyethylene terephthalate film, polycarbonate film, nylon film, polystyrene film, ethylene vinyl acetate copolymer film, ethylene vinyl alcohol copolymer film, ionomer, and iron , Aluminum, copper, and other metal foils or sheets, and composites of the above materials.

The base material 6 may be subjected to a base treatment such as a filling treatment or a primer treatment, a treatment for improving the adhesiveness, or the like. Further, the transfer base material 6 may be provided with a coloring layer, a picture layer, a metal deposition layer, or a picture printing sheet may be laminated via an adhesive.

The transparent or translucent ionizing radiation-curable resin layer 5 provided on the substrate 6 to be transferred or on the laminate surface of the transfer sheet 1 is mainly composed of polymers, oligomers, monomers, etc. having a radically polymerizable double bond in the structure. And, containing a photoinitiator and sensitizer, other non-reactive polymer, organic solvent, wax and other additives as necessary, various grades are easily available from the market,
It can be used in the present invention. In addition, the ionizing radiation curable resin layer 5
A flame retardant, a conductive material, or the like may be mixed into the mixture to impart functions such as flame retardation and conductivity. Further, the resin layer 5 may be colored as long as it is a transparent or translucent layer. The ionizing radiation curable resin layer 5 includes a gravure coat, a roll coat,
It can be formed by a known method such as flow coating or spray coating. The thickness of the resin layer 5 is 3 μm or more.
1 mm, especially 30 to 200 μm, is preferred. The same material and forming method as described above can be applied to the overcoat after transfer.

Next, the transfer sheet 1 and the transfer-receiving substrate 6 are overlapped with each other via the ionizing radiation-curable resin layer 5 as described above. (FIG. 3). Typical examples of the ionizing radiation 7 are ultraviolet rays and electron beams, but other types can be used.

Due to the irradiation of the ionizing radiation 7, the ionizing radiation-curable resin layer 5 is cured in a portion where the ionizing radiation-shielding pattern 4 is not present, and the transferred substrate 6, the resin layer in which the electron radiation-curable resin layer 5 is cured, and The three of the colored layers 3 are cured and integrated,
Further, in a portion where the ionizing radiation shielding pattern 4 exists, the ionizing radiation curable resin layer 5 is left uncured.

When the ionizing radiation permeable sheet 2 is peeled off after the irradiation with the ionizing radiation 7, the colored layer 3 remains on the resin layer on the side of the transfer-receiving substrate 6 in the above-described cured and integrated portion, and is not cured in the uncured portion. Of the ionizing radiation-curable resin adheres to the ionizing radiation-permeable sheet 2, the adhered portion is removed together with the peeling of the sheet 2, and as a result, the concave portion 8 in which a small amount of uncured ionizing radiation-curable resin layer 5 a remains And a cured portion (convex portion) 9 with the colored layer 3 is formed on the resin layer (the fourth portion).
Figure).

Next, as shown in FIG. 5, a separately prepared shaping sheet
6 is superimposed on the base material 6 on which the cured portion 9 is formed via the ionizing radiation-curable resin layer 5b as shown in FIG. 6, and then irradiated again with the ionizing radiation 7 to remove the ionizing radiation-curable resin layer 5b. To cure.

The shaping film 10 is for imparting a concavo-convex shape to the surface of the ionizing radiation-curable resin layer 5b, and a film made of a material having ionizing radiation transparency and releasability is used. The same material as the material of the electron radiation permeable sheet can be used.

The surface of the shaping film 10 is provided with irregularities 11 formed by using a urethane resin, a polyester resin or the like as a vehicle, and adding an ink containing silica, calcium carbonate or the like as a matting agent by a known method. Such irregularities are formed by embossing, hairline processing, sandblasting, or the like. In addition, irregularities may be formed with an ink that does not require a matting agent.

Further, the transfer sheet 1 used first as the shaping film can be used again. In this case, one obtained by curing the ionizing radiation-curable resin layer 5 and then peeling off the transfer sheet as shown in FIG. 4 can be used as it is.

Next, the shaping film 10 is peeled off to obtain the decorative plate 12 of the present invention as shown in FIG.

The decorative plate of the present invention was provided with a colored layer on the convex portion of the ionizing radiation-curable resin layer having irregularities, further provided with an ionizing radiation-curable resin layer having transparency, and formed on the surface of the resin layer with a molding film. Since the uneven pattern 13 is formed, an appearance with an extremely rich three-dimensional effect is obtained and the design is excellent.

In the present invention, a protective layer can be formed on the outermost surface in order to increase the durability of the surface. This protective layer is preferably transparent or translucent. The protective layer may be formed from the ionizing radiation-curable resin, or may be a resin such as aminoalkyd, polyurethane, unsaturated polyester, or polysiloxane.

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 design ink layer was in contact with the paint.

[Transfer sheet specification]

Releasable film: Toray polyester film (50 μm) Colored layer: 3 μm thick using colored pearl ink (Morohoshi Ink)
m for gravure printing.

Ionizing radiation shielding pattern: An abstract pattern was printed with a gravure black and white plate having a plate depth of 60 μm using white ink (manufactured by Morohoshi Ink).

Then, a UV irradiation line equipped with five 80 W / cm ozoneless UV lamps is passed at a speed of 20 m / min to cure the UV curable paint in the portion in contact with the transparent ink, and peel off the release film of the transfer sheet. did.

After that, the surface of the inorganic plate to which the pearl ink layer was transferred was flow-coated with a UV-curable paint layer (manufactured by Nippon Paint) at a thickness of 50 μm, and the following specifications were applied so that the mat pattern ink layer was in contact with the paint Are laminated.

[Shaping film specifications]

Release film: Toray polyester film (50 μm) Concavo-convex pattern: An abstract pattern was printed with a gravure black and white plate having a plate depth of 80 μm using a matte pattern ink having the following composition.

[Mat pattern ink]

Acrylic polyol 50 parts Isocyanate 10 parts Micro silica 10 parts MIBK, toluene, ethyl acetate 28 parts Silicon 2 parts After that, 5 80W / cm ozoneless UV lamps were installed.
The coating was cured by passing through a UV irradiation line at a speed of 20 m / min, and the molded film was peeled off together with the matte ink.

The resulting panel was a decorative panel with excellent surface properties and a three-dimensional appearance with a gloss mat on the surface.

〔The invention's effect〕

As described above, the decorative board of the present invention has a high design with rich three-dimensional effect, and according to the method of the present invention, such a decorative board can be easily manufactured.

[Brief description of the drawings]

1 to 6 are explanatory views for explaining the production method of the present invention, and FIG. 7 is a longitudinal sectional view showing the decorative plate of the present invention. DESCRIPTION OF SYMBOLS 1 ... Transfer sheet, 2 ... Ionizing radiation transmissive sheet, 3 ... Coloring layer, 4 ... Ionizing radiation shielding pattern, 5 ... Ionizing radiation curable resin layer, 6 ... Substrate to be transferred, 7 ... ... Ionizing radiation, 8 ... Concave part, 9 ... Curing part, 10 ... Forming film, 11 ... Concavity and convexity, 12 ... Decorative plate 13 ... Concavo-convex pattern

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location B32B 27/00 B32B 27/00 E 31/12 9349-4F 31/12 31/28 9349-4F 31 / 28

Claims (3)

(57) [Claims] An ionizing radiation-curable resin layer having irregularities is provided on the surface of a substrate, and a colored layer is provided on a convex portion of the resin layer. The colored layer is coated with the ionizing radiation-curable resin to improve transparency. A decorative plate, comprising: an ionizing radiation-curable resin layer provided thereon, and a surface of the resin layer having an uneven pattern formed by a shaping film. 2. A method for producing a decorative board, comprising the steps of: (A) A colored layer is provided on a releasable surface of an ionizing radiation-permeable sheet having a releasable surface, and an ionizing radiation shielding pattern is provided on either the front or back surface of the ionizing radiation-permeable sheet or on the surface of the colored layer. (B) laminating the transfer sheet and the substrate to be transferred via a transparent or translucent ionizing radiation-curable resin layer, (c) ionizing radiation transparency of the transfer sheet Irradiating ionizing radiation from the sheet side to cure the ionizing radiation-curable resin layer corresponding to a portion having no ionizing radiation shielding pattern; and (d) peeling off the ionizing radiation-transmissive sheet to remove the ionizing radiation-curable resin layer. A step of attaching a portion of the resin of the cured portion to the transparent sheet to remove the resin, and forming a cured portion in which the colored layer is in close contact with the transparent sheet; (F) irradiating ionizing radiation from the molding film side to cure the ionizing radiation-curable resin layer, with a transparent ionizing radiation-curable resin layer interposed therebetween. (G) a step of peeling off the imprinting film and expressing irregularities on the surface; 3. The method according to claim 2, wherein after the ionizing radiation transmitting sheet of the transfer sheet is peeled off together with the ionizing radiation shielding pattern in the step (d), the peeled sheet is used as it is as a forming film. 3. The method for producing a decorative board according to claim 2, wherein in the step e), the imprinting film is overlapped with an ionizing radiation-curable transparent or translucent resin layer, and ionizing radiation is irradiated from the imprinting film side.