JPH08258236A - Decorative sheet having cubic effect - Google Patents

Abstract

PURPOSE: To provide decorative sheet, which has a uniform and dense uneven pattern form and excellent cubic effect and designedness with depth and further an excellent adhesion between ionizing radiation curable resin, which form transparent or semitransparent surface protective layer and ink layer containing a liquid repellent for forming the uneven pattern, at low cost. CONSTITUTION: The decorative sheet having cubic effect is produced by laminating adhesive layer 9, base material sheet layer 2, uneven pattern layer made of ink containing liquid repellent, transparent resin layer 6, the adhesion between the liquid repellent-containing ink and which is excellent, and transparent or semitransparent surface protective layer 7 or board 8 in the order named.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board having a three-dimensional effect and depth, which is suitable for various furniture surface materials and interior building materials, and which has a concave-convex special pattern excellent in design.

[0002]

BACKGROUND ART Conventionally, as a decorative material having an uneven pattern on its surface, (1) a decorative material printed with an uneven pattern or a cissing pattern, (2) embossing with an embossing roll, embossing template, etc. What you have done is known.

However, the above-mentioned cosmetic material (1) is poor in three-dimensional appearance because only the pattern is printed and formed, and the cosmetic material (2) is fine and complicated on the embossing roll or embossing template. Since it is difficult to express a mold with a different shape, the resulting decorative material tends to have a relatively simple uneven pattern, so by giving unevenness of a fine and complicated shape to the surface, the three-dimensional effect etc. can be exhibited. It is extremely difficult to obtain such a decorative board. Therefore, the present inventor applies an ink containing a liquid repellent and cures it to form a cissing-like uneven pattern on the surface of the ink layer, and to provide a transparent or semitransparent ionizing radiation curable resin layer on the entire surface. Therefore, a cosmetic material having a three-dimensional effect was proposed, but when a nitrified cotton-based resin is used as a vehicle for an ink containing a liquid repellent, the liquid repellent effect is poor and the design is inferior. When an acrylic polyol-based resin is used, a decorative sheet that is rich in liquid repellency and has a three-dimensional effect with excellent design can be obtained. However, due to the composition of the ionizing radiation-curable resin used in the transparent or translucent surface protective layer provided on the surface of the decorative sheet, there is a difference in adhesiveness with the acrylic polyol resin containing the liquid repellent, and expensive urethane acrylate Although it exhibits good adhesiveness with the system ionizing radiation curable resin, it has a drawback that it has low adhesiveness with an inexpensive unsaturated polyester ionizing radiation curable resin.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to obtain a three-dimensional effect and a depth with a uniform and dense uneven pattern shape. Providing a decorative plate at a low price that has an excellent design and also has excellent adhesion between the ionizing radiation curable resin that forms a transparent or semi-transparent surface protective layer and the ink layer that contains a liquid repellent that forms an uneven pattern To do.

[0005]

In order to achieve the above object, a decorative board having a three-dimensional effect of the present invention has an uneven pattern formed by an ink containing an adhesive layer, a base sheet layer and a liquid repellent on a substrate. It is characterized in that a layer, a transparent resin layer having excellent adhesion to an ink containing a liquid repellent, and a transparent or semitransparent surface protective layer are sequentially laminated.

The uneven pattern layer made of the ink containing the liquid repellent is made of an acrylic polyol resin, and the transparent resin layer excellent in adhesion to the ink containing the liquid repellent is made of a vinyl polyester polyol resin. It is preferable that the transparent or translucent surface protective layer is composed of an unsaturated polyester ionizing radiation curable resin.

Furthermore, it is more preferable that the ink containing the liquid repellent is mixed with a pigment having a glittering property.

[0008]

In the present invention, as described above, an ink layer containing a liquid repellent agent provided on a substrate and a surface protective layer made of a transparent or semitransparent ionizing radiation curable resin are formed by an ionizing radiation curable resin. By doing so, it is possible to obtain a decorative board having a three-dimensional effect and a deep design, which has a smooth uppermost layer surface and an uneven pattern inside, and has excellent adhesion to an ink containing a liquid repellent on the uneven surface. By providing the transparent resin layer, the adhesiveness of the decorative board is improved. Further, by mixing a pigment having a glittering property with the ink containing the liquid repellent, the effect of producing a three-dimensional effect is excellent.

[0009]

EXAMPLES Examples will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a laminated structure of a decorative board having a three-dimensional effect according to the present invention, and FIG. 2 is an explanatory view showing a process of a method for manufacturing a decorative board having a three-dimensional effect according to the present invention. Decorative plate, 2 base sheet, 3 primer layer, 4 solid printing layer, 5 ink layer containing liquid repellent, 6 transparent resin layer, 7 surface protective layer, 8 substrate, 9 adhesive The layer 10 represents an ionizing radiation transparent sheet, and 11 represents ionizing radiation.

A decorative plate 1 having a three-dimensional effect according to the present invention is shown in FIG.
As shown in FIG.
A decorative sheet having a transparent resin layer 6 having excellent adhesiveness to an ink containing a liquid repellent is provided on the substrate 8 over the entire surface of the uneven printing layer 5 formed of the solid print layer 4 and the ink containing the liquid repellent. Laminated on the surface via the adhesive layer 9, and further,
A transparent or semi-transparent surface protective layer 7 is laminated on the surface of the transparent resin layer 6 having excellent adhesion to the ink containing the liquid repellent.

The feature of the decorative board 1 having a three-dimensional effect of the present invention is that the base sheet 2 is coated with an ink containing a liquid repellent agent containing an acrylic polyol resin as a main component and cured to form an uneven pattern 5. A decorative sheet having a transparent resin layer 6 made of a vinyl polyester polyol resin having excellent adhesion to an acrylic polyol resin on the surface of the uneven pattern 5 is produced, and the decorative sheet is attached to a substrate 8 and then the makeup is applied. A transparent or semi-transparent surface protective layer 7 made of an unsaturated polyester ionizing radiation curable resin is provided on the upper surface of the sheet so that the surface becomes smooth, and it has excellent adhesiveness and has an uneven pattern formed inside. .

The base sheet 2 used in the present invention is a base sheet used for ordinary decorative boards, for example, paper such as thin paper, bleached kraft paper, titanium paper, linter paper, paper board, gypsum board paper. Paper-based substrates such as, polyethylene film, polypropylene film, polyvinyl chloride film, plastic film consisting of polyester film or the like, or metal foil such as copper, iron or aluminum, and the like, or they may be used alone or A lamination film or the like, which is appropriately laminated, can be used.

When a paper-based base material is used as the base material sheet 2, a thickness of 23 to 65 g / m ² is suitable, and a primer 3 is applied to strengthen the space between papers. Is preferred. The primer resin used is urethane resin, acrylic resin, urea resin,
Melamine resin or the like is applied by a known gravure printing method.

As the ink containing the liquid repellent for forming the ink layer 5 having a desired uneven pattern, a known thermoplastic resin, thermosetting resin, ionizing radiation curable resin or the like is used as a vehicle, and the liquid repellent is applied to the vehicle. In addition, if necessary, other additives, for example, pigments, coloring agents such as dyes, extender pigments, solvents, stabilizers, plasticizers, catalysts, curing agents and the like are appropriately mixed. Can be used. As a material that is rich in liquid repellency and has a good design, it is preferable to mix a vehicle with an acrylic polyol resin and a non-yellowing type isocyanate crosslinking agent. The acrylic polyol resin is a hydroxyl group-containing polyacrylate such as a methylmethacrylate and a hydroxyethylmethacrylate copolymer, and the non-yellowing type polyisocyanate is an aliphatic or alicyclic isocyanate and their pillet. , Adducts, isocyanates, blocked isocyanates, prepolymers, etc., which act as a crosslinking curing agent.

As the liquid repellent used for the liquid repellent ink, known ones, for example, liquid repellent substances such as silicone, polyethylene wax, paraffin wax, amide wax, wax wax, and vinyl fluoride compound can be used. , Preferably silicone. The amount added is preferably 0.1 to 2.0% by weight based on the ink composition.

The silicone as the liquid repellent substance will be described in more detail. As the silicone,
For example, methyl group, propyl group, phenyl group,
It has a linear, side chain or cyclic structure in which groups such as an alkoxy group, a hydroxyl group, an acetoxy group, a halogen atom and a metal salt are optionally bonded.

As the pigment added to the liquid repellent ink, a commonly used organic or inorganic pigment and a bright pigment can be used. For example, typical pigments include silica, extender pigments, polyazo pigments, isoindolinone pigments, perylene pigments, carbon black and the like. Further, in order to bring out a more three-dimensional effect, it is preferable to use a luster pigment, and as the luster pigment, a metallic luster pigment or a pearl pigment can be used. As the metallic luster pigment, a metallic powder such as gold powder, silver powder, aluminum powder, copper powder, brass powder, or a metal piece, or a pigment having metallic luster such as a cut piece of a metal deposition synthetic resin film can be used. As the pigment, a pigment having a pearly luster or interference luster, such as the inside of a shell or crushed pearls, or the fine particles of mica baked with titanium dioxide or iron oxide can be used. In particular, fine particles of mica baked with titanium dioxide or iron oxide are excellent in design effect. As the pearl pigment, those having an average particle diameter in the range of 1 to 120 μm are usually used, and particularly 10
Those having a particle size of -60 μm are effective in developing a three-dimensional effect. The addition amount of the pearl pigment mixed with the ink containing the liquid repellent is preferably in the range of 5 to 20% by weight. If the amount of the pigment added is less than 5% by weight, the appearance of a three-dimensional effect is insufficient and the design is inferior, and if it exceeds 20% by weight, the underlying printing layer is hidden and the material cost increases, which is not preferable.

As the coating method, known coating means such as a gravure printing method, a roll coating method and a reverse roll coating method can be used. 1-100μ as coating thickness
m is preferable, and when the coating amount is as small as less than 1 μm,
It becomes difficult to form coating unevenness or a liquid-repellent portion as a concave portion, and when the coating amount exceeds 100 μm and is too large, the ink of the liquid-repellent portion is repelled and the concave portion is not sufficiently formed. However, it is formed thicker than necessary, and the cost is increased.

Although only the solid printing layer has been described as the printing layer, for example, a stone pattern, a cloth pattern, a surface pattern of natural leather, or
A pattern print layer expressing an abstract pattern or the like may be provided.

As the resin usable for the transparent resin layer 6,
It has excellent liquid repellency and excellent adhesiveness with a good design acrylic polyol resin, and also has excellent adhesiveness with unsaturated polyester ionizing radiation curable resin, which is much cheaper than urethane acrylate ionizing radiation curable resin. Resins are preferred and vinyl polyester polyol resins are most suitable. By forming the transparent resin layer 6 with a thickness of about 3 μm by the gravure printing method using the ink made of the vinyl polyester polyol resin, the cost is significantly lower than that of the urethane acrylate-based ionizing radiation curable resin on the transparent resin layer 6 surface. Even if a transparent or semitransparent surface protective layer 7 made of such an unsaturated polyester ionizing radiation curable resin is used, sufficient adhesive strength can be obtained.

The resin vehicle for forming the transparent or semi-transparent surface protective layer 7 used in the present invention includes stain resistance,
A transparent resin layer of 100 μm or more is desirable to form a film having excellent surface properties such as solvent resistance and scratch resistance, and to give a three-dimensional appearance inside, and a film thickness of 100 μm or more on the substrate. An ionizing radiation curable resin is suitable because it can be easily formed. As the ionizing radiation curable resin, a composition in which a prepolymer, an oligomer, and / or a monomer having a polymerizable unsaturated bond or an epoxy group in the molecule is appropriately mixed is used. As these prepolymers and oligomers, for example, unsaturated polyesters such as condensation products of unsaturated dicarboxylic acids and polyhydric alcohols, polyester methacrylates, polyether methacrylates, polyol methacrylates, melamine methacrylates and other methacrylates,
Acrylates such as polyester acrylate, epoxy acrylate, urethane acrylate, polyether acrylate, polyol acrylate, and melamine acrylate are also conceivable, but they are excellent in various properties such as stain resistance, solvent resistance, and scratch resistance, and the material cost is very high. The most inexpensive unsaturated polyester ionizing radiation curable resin is the most preferable one.

Next, the decorative plate 1 having the above-mentioned structure and having a three-dimensional effect.
The manufacturing method of will be described. First, in the present invention, FIG.
As shown in (a), the primer layer 3 and the solid printing layer 4 are formed on the entire surface of the base sheet 2, and then the ink 5 containing the liquid repellent and the transparent resin layer 6 are formed on the solid printing layer 4. Coated,
It is dried and cured to form a desired uneven pattern on the surface to obtain a decorative sheet [Fig. 2 (b)]. Next, as shown in FIG. 2C, a decorative sheet having a desired concavo-convex pattern formed on the substrate 8 having the surface coated with the adhesive 9 and the transparent resin layer 6 provided on the upper surface thereof is laminated. Next, as shown in FIG. 2 (d), the entire surface of the decorative sheet is coated with an ionizing radiation curable resin that forms a transparent or semitransparent surface protective layer 7, and an ionizing radiation transparent sheet 10 is further laid on it. The transparent or semi-transparent surface protective layer 7 is formed by irradiating the ionizing radiation 11 from the ionizing radiation transparent sheet 10 side to cure the ionizing radiation curable resin on the surface of the decorative sheet. Then, as shown in FIG. 2 (e), the ionizing radiation transparent sheet 10 is peeled off,
A decorative plate 1 having a three-dimensional effect can be obtained in which the surface protective layer 7 is an ionizing radiation curable resin having a smooth surface and an uneven pattern inside as shown in FIG.

The substrate 8 used in the present invention is wood, plywood,
Wood board such as particle board, MDF, gypsum board, asbestos perlite board, calcium silicate board, inorganic board such as glass wool, iron board, galvanized board, aluminum board,
A metal substrate such as a stainless plate, a phenol plate, a melamine plate, a polyester plate, an acrylic plate, a synthetic resin substrate such as a vinyl chloride plate, or the like can be used alone or in combination as a composite material.

Example 1 A primer layer was formed on a thin paper having a basis weight of 30 g / m ² by gravure printing using a two-component curable ink composed of an acrylic polyol resin, and a nitrocellulose resin was cured with an isocyanate on the primer layer. A solid printing layer was formed with the ink containing the agent. Next, an ink containing a liquid repellent having the following composition was used to apply a coating thickness of 10 μm (dry state) on the solid printing layer of the thin paper by a gravure printing method. [Ink composition containing liquid repellent] Acrylic polyol 27.5 parts by weight Pearl pigment 10 parts by weight Liquid repellent 0.5 parts by weight Solvent 52 parts by weight Curing agent 10 parts by weight Next, on the ink layer containing the above liquid repellent. Then, a transparent resin ink having the following composition was applied by the same gravure printing method so as to have a thickness of 3 μm (dry state), and dried to obtain a decorative sheet. [Transparent resin ink composition] Vinyl polyester polyol 80 parts by weight Curing agent 50 parts by weight Solvent 170 parts by weight Next, the above decorative sheet was attached to a 10 mm thick MDF plate via a urea-vinyl acetate resin adhesive. After that, the unsaturated polyester ionizing radiation curable resin is applied on the entire upper surface of the decorative sheet having an uneven pattern by the ink containing the liquid repellent with a flow coater so that the thickness thereof is 100 μm (dry state), A biaxially stretched polyester film having a thickness of 38 μm was coated from above to prevent air bubbles from entering, and then passed through an irradiation device equipped with two 80 w / cm ozoneless type ultraviolet lamps at a speed of 20 m / min. After the unsaturated polyester ionizing radiation curable resin is cured, the biaxially stretched polyester film is peeled off,
A decorative board having a pearlescent pigment inside and excellent in three-dimensional effect having an uneven pattern was obtained.

[0025]

INDUSTRIAL APPLICABILITY As described above, the present invention forms an uneven pattern layer on the surface of a substrate sheet with an ink containing a liquid repellent and has excellent adhesion to the ink containing the liquid repellent on the upper surface thereof. By using a decorative sheet with a transparent resin layer, it has excellent adhesion between the uneven pattern ink layer and the surface protection layer, has a smooth surface and has an uneven pattern inside, and has an extremely three-dimensional and depth feeling. The veneer can be obtained at low cost.

An unsaturated polyester-based ionizing radiation-curable resin, which is much cheaper than a urethane acrylate-based ionizing radiation-curable resin, is formed on the concavo-convex pattern layer whose main component is an acrylic polyol-based resin having an excellent liquid-repellent effect. Since it is possible to stack, it is possible to obtain at a low cost a highly-designed decorative board having an extremely three-dimensional effect and a sense of depth.

Furthermore, by using an ink in which a bright pigment is mixed with an ink containing a liquid repellent, the contrast of the uneven pattern can be further emphasized and a sufficient depth can be obtained, further imparting a high-class feeling. You can

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a laminated structure of a decorative board having a three-dimensional effect according to the present invention.

FIG. 2 is an explanatory view showing steps of a method for manufacturing a decorative board having a three-dimensional effect according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative plate with three-dimensional effect 2 Base sheet 3 Primer layer 4 Solid printing layer 5 Ink layer containing liquid repellent 6 Transparent resin layer 7 Surface protective layer 8 Substrate 9 Adhesive layer 10 Ionizing radiation transmissive sheet 11 Ionizing radiation

Claims (3)

[Claims] 1. An adhesive layer, a base sheet layer, an uneven pattern layer made of an ink containing a liquid repellent, a transparent resin layer having excellent adhesion to an ink containing a liquid repellent, and a transparent or semitransparent layer on a substrate. A decorative plate having a three-dimensional effect, which is formed by sequentially laminating various surface protection layers. 2. A concavo-convex pattern layer made of the ink containing the liquid repellent is made of an acrylic polyol resin, and a transparent resin layer excellent in adhesion to the ink containing the liquid repellent is made of a vinyl polyester polyol resin. The decorative board having a three-dimensional effect according to claim 1, wherein the transparent or translucent surface protective layer is made of an unsaturated polyester ionizing radiation curable resin. 3. The ink containing the liquid repellent is mixed with a pigment having a brilliance.
A decorative board having a three-dimensional effect as described in 2.