JPH1086270A - Inorganic decorative sheet and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an inorganic decorative sheet provided with fireproofing property, suitable for a wall surface material for washroom or the like and unnecessitating a new investment in facilities by a method wherein a paper substrate sheet, a pattern printing layer and a transparent resin layer are laminated on an inorganic substrate sequentially, then, a embossed pattern layer, formed of coating containing liquid repellent agent, is laminated thereon further. SOLUTION: An inorganic decorative sheet 1 is constituted of a sealant layer 3, provided on the upper surface of an inorganic substrate 2, a paper decorative sheet 8, obtained by providing a pattern printing layer 6 and a transparent resin layer 7 on a paper substrate sheet 5 and laminated on the sealant layer 3 through an adhesive agent layer 4, and an embossed pattern layer 9, formed of a coating material containing liquid repellent agent and laminated on the paper decorative sheet 8. Coating, containing the liquid repellent agent for forming the coating film layer 9 having a desired embossed pattern is preferably a mixture of vehicle, acrylic polyol resin and non-yellowed type isocyanate crosslinking agent while silicone, polyethylene wax, paraffin wax, amide wax and the like are used as the liquid repellent agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic decorative board having a good design pattern and a concave-convex pattern, which is used for a wall material of a building interior, in particular, a washroom, a dressing room and the like, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a decorative material having an uneven pattern on its surface, (1) a decorative material on which a pattern of an uneven pattern or a cissing pattern is printed, and (2) embossing by embossing with an embossing roll, an embossing template or the like. Known cosmetic materials are known. However, the decorative material of (1) has a poor three-dimensional effect because the pattern is only formed by printing, and the decorative material of (2) has a fine and complicated shape on an embossing roll or an embossed mold plate. Is difficult to express, the resulting cosmetic material tends to have a relatively simple uneven pattern, is unsuitable for the production of small quantities of many kinds, and the production efficiency is poor due to the additional steps. Was.

In order to solve the above drawbacks, a picture pattern is directly printed on a base material such as plywood, hard board, calcium silicate board, asbestos slate board, cement slate board, etc.
A paint containing a liquid repellent is applied from above the printed pattern, and a pattern provided on the surface, or a transfer sheet, is used to transfer a picture pattern onto the base material surface. It has been proposed to apply a coating containing a liquid repellent, and to provide an uneven pattern on the surface, but in the former case, the printability is poor, the appearance of a fine pattern is difficult, and the design is inferior, In the latter case, the design is better, but the equipment requires special transfer equipment.Moreover, the process is increased and complicated, resulting in lower production efficiency and higher cost. was there.

[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 provide a fireproof and to be used for a wall material of a washroom, a dressing room and the like. Another object of the present invention is to provide an inexpensive inorganic decorative board excellent in design and a method for producing the same without requiring new investment in equipment.

[0005]

Means for Solving the Problems To achieve the above object, a solution of the present invention is to provide a paper base material sheet, a pattern printing layer, a transparent resin layer, and a concavo-convex pattern layer on an upper surface of an inorganic base material in order. In the laminated inorganic decorative board, the uneven pattern layer is an inorganic decorative board formed by applying and curing a paint containing a liquid repellent. With this configuration, a fine pattern printing layer can be formed on the inorganic base material, and a liquid repellent-containing paint is applied to the surface on which the transparent resin layer is provided. The property is increased and the uneven shape is emphasized. Further, it is possible to improve the abrasion resistance of the pattern due to the friction in the concave portions of the concave-convex pattern layer made of the paint containing the liquid repellent, and to provide an inorganic decorative board excellent in surface physical properties.

[0006] Further, the paint containing the liquid repellent is characterized by being mixed with a pigment having glitter. By doing so, it is possible to obtain an inorganic decorative board having an excellent effect of exhibiting a three-dimensional effect and having more excellent design.

A step of preparing a paper-based decorative sheet in which a pattern printing layer and a transparent resin layer are laminated on one surface of a paper-based substrate sheet, a step of coating a sealer layer on the upper surface of an inorganic substrate,
A step of attaching the paper-based decorative sheet to the surface of the sealer layer of the inorganic base material through an adhesive layer, and applying a coating containing a liquid-repellent agent to the transparent resin layer of the paper-based decorative sheet to form an uneven pattern. By a method for producing an inorganic decorative board, which comprises a step of forming a layer,
There is no need to invest in special transfer equipment, and the process can be shortened, and productivity can be improved, so that a low-cost inorganic decorative board can be manufactured. It can be easily and reliably manufactured.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a laminated structure of the inorganic decorative board of the present invention, and FIG.
1 is an inorganic decorative board, 2 is an inorganic base material, 3 is a sealer layer, 4 is an adhesive layer, 5 is a paper base material sheet, 6 is a pattern printing layer, 6a is a solid ink layer, 6b is a pattern ink layer, Reference numeral 7 denotes a transparent resin layer, 8 denotes a paper-based decorative sheet, and 9 denotes an uneven pattern layer.

As shown in FIG. 1, the inorganic decorative board 1 of the present invention has a paper-based substrate sheet provided on the surface of a sealer layer 3 provided on the upper surface of an inorganic substrate 2 with an adhesive layer 4 interposed therebetween. 5, a paper-based decorative sheet 8 provided with a pattern printing layer 6 and a transparent resin layer 7 on the upper surface thereof, and a concavo-convex pattern layer 9 formed of a paint containing a liquid repellent is laminated thereon. The picture printing layer 6 is composed of a solid ink layer 6a and a picture ink layer 6b.

The inorganic base material 2 used for the inorganic decorative board 1 of the present invention is generally a calcium silicate board,
Examples include cement boards such as asbestos slate board, lightweight foam concrete board, hollow extruded cement board, etc., gypsum boards such as gypsum board and gypsum slag board, and fiber cement boards such as pulp cement board, asbestos cement board and wood chip cement board.

The sealer layer 3 is used to prevent elution of alkali components from the inorganic base material 2 and to form a paper-based decorative sheet 8.
It is provided for the purpose of improving the adhesion between the resin and the inorganic base material 2. As a method for improving the quality performance, polyisocyanate resin, moisture-curable urethane resin, styrene-acryl The sealer layer 3 made of a curable resin such as an acid ester copolymer resin is desirable.

The configuration of the paper-based decorative sheet 8 for forming the pattern print layer 6 on the inorganic decorative board 1 is shown in FIG.
As shown in (a), a pattern printing layer 6 composed of a solid ink layer 6a and a pattern ink layer 6b is provided on one side of a paper-based substrate sheet 5, and a transparent resin layer 7 is laminated thereon. . The paper base sheet 5 has a weighing of 23 to 6
Printed paper for building materials of 5 g / m ² , pure white paper, thin paper (so-called reinforced printed paper) in which a thermoplastic synthetic resin is mixed to enhance the interlayer strength, and the like are used.

The pattern printing layer 6 is provided with a solid ink layer 6a of solid printing on the entire surface and a pattern ink layer 6b expressing, for example, a stone pattern, a cloth pattern, a surface pattern of natural leather, an abstract pattern, and the like. As the vehicle of the ink, known ones can be used.For example, an acrylic type, a vinyl chloride type, a vinyl chloride-vinyl acetate copolymer, a chlorinated polyolefin nitrocellulose, a simple substance or a mixture composed of a resin type such as urethane, etc. Accordingly, a mixture of a coloring agent such as a pigment and a dye, an extender pigment, a solvent, and the like can be used as appropriate. Among them, an ink obtained by adding an isocyanate curing agent to a nitrocellulose resin is preferable because of its excellent adhesion. The solid ink layer 6a can also contain a brilliant pigment together with the coloring pigment. Further, the solid ink layer 6a contains only the coloring pigment and is formed without the brilliant pigment, and the pattern ink layer 4b is formed. It is also possible to include a glitter pigment. When the bright pigment is contained in the picture ink layer 6b, the bright colors of the bright pigment of the picture print layer 6 and the paint layer 9 containing the liquid repellent can be made different from each other. By making them different from each other and related to each other, a special visual effect and a three-dimensional effect can be created.

The transparent resin layer 7 is provided between the pattern printing layer 6 and the concavo-convex pattern layer 9 made of a paint containing a liquid repellent to improve abrasion resistance, and the surface of the pattern printing layer 6 is made of a transparent synthetic resin. By covering with a layer, the pattern is prevented from disappearing due to friction in the concave portions of the concave-convex pattern layer. As the resin used for the transparent resin layer 7, a curable synthetic resin such as a urethane resin, an acrylic resin, or a polyester resin is suitable, and a two-component curable acrylic urethane resin is particularly preferably used. The film thickness is set at 5 to prevent the disappearance of the picture due to friction in the concave portions of the uneven pattern layer.
It is preferable that the thickness be not less than μm.

The coating material containing a liquid repellent for forming the coating layer 9 having a desired concavo-convex pattern is made of a known thermoplastic resin, thermosetting resin, ionizing radiation curable resin, or the like as a vehicle. Is used, and if necessary, other additives, for example, a colorant such as a pigment or a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a curing agent and the like are appropriately mixed. it can. It is preferable to use a mixture of an acrylic polyol resin and a non-yellowing type isocyanate cross-linking agent in a vehicle as a material having a good liquid repellency and a good design.

As the liquid repellent used in the liquid repellent paint, known ones, for example, silicone, polyethylene wax,
Liquid repellent substances such as paraffin wax, amide wax, wax wax, and vinyl fluoride compound can be used, and silicone is preferable. The amount of addition is 0.01 to 10% by weight, preferably 0.2 to 10% by weight.
~ 2.0% by weight.

As the pigment to be added to the liquid-repellent paint, commonly used organic or inorganic pigments and glitter pigments can be used. Then, in order to further show a three-dimensional effect, it is preferable to use a glitter pigment. Examples of the brilliant pigment include, for example, pearl pigments, specifically, crushed shells and pearls, mica fine particles baked with titanium oxide or iron oxide, metal powders (eg, copper, aluminum, etc.). , Brass, bronze, gold, silver, etc.)
Fine particles of 20 μm, pieces of deposited plastic, for example, the above-mentioned metal (usually aluminum) was deposited on a polyethylene terephthalate film and then pulverized (silver powder). (Golden powder). The amount of the brilliant pigment added to the paint containing the liquid repellent is preferably 1 to 10% by weight.
That is, when the pigment addition amount is as low as less than 1% by weight, the unevenness of the repelling pattern is hardly emphasized, and the pigment addition amount is 10% by weight.
If it is higher than the above, the printed pattern is concealed and the design is inferior.

As a coating method, a known coating means such as a gravure printing method, a roll coating method, a reverse roll coating method and a sponge roll coating method can be used. The coating amount is 10 to 100 g / m ² (wet state), and preferably 20 to 50 g / m ² (wet state). When the coating amount is as small as less than 20 g / m ² , it is difficult to form coating unevenness or a liquid-repellent portion as a concave portion, resulting in poor design. On the other hand, when the coating amount is as large as 50 g / m ² or more, the coating of the liquid-repellent portion is repelled to form insufficient concave portions, and the layer is formed unnecessarily thick, which is disadvantageous in cost. In addition to this, the lower pattern printing layer is hard to see and the design is inferior.

Next, an example of a method for producing the inorganic decorative board 1 of the present invention will be described with reference to the drawings. First, FIG.
As shown in (a), a pattern printing layer 6 composed of a solid ink layer 6a and a pattern ink layer 6b is formed on the upper surface of the paper-based substrate sheet 5.
Then, a paper-based decorative sheet 8 provided with the transparent resin layer 7 is prepared. Next, as shown in FIG.
Is provided with a sealer layer 3 on the surface of. Next, as shown in FIG. 2C, a paper-based decorative sheet 8 is adhered to the surface of the sealer layer 3 of the inorganic base material 2 via an adhesive layer 4. Further FIG.
As shown in (d), a paint containing a liquid repellent is applied to the upper surface of the transparent resin layer 7 including the picture print layer 6 and cured, whereby the inorganic decorative board 1 having the concavo-convex pattern layer 9 is applied.
Is obtained.

[0020]

【Example】

Example 1 A solid ink layer and a desired pattern ink layer were printed on a thin paper having a basis weight of 30 g / m ² using an ink obtained by adding an isocyanate curing agent to a nitrocellulose resin using a gravure rotary printing machine. As a transparent resin layer, a two-component curable acrylic urethane-based resin was coated at 20 g / m ² (wet) to prepare a paper-based decorative sheet. Separately, 30 g / m ² of a polyisocyanate-based resin paint was applied as a sealer layer to a calcium silicate plate having a thickness of 3 mm, and dried at 80 ° C. for 20 minutes to prepare. Next, the paper-based decorative sheet obtained above is bonded to the surface of the sealer layer of the calcium silicate plate via a two-component curable urea resin-based adhesive, and then the two-component curable type containing a liquid repellent agent on the transparent resin layer surface. Acrylic urethane paint (No. 220 Brighton Silver, manufactured by Osaka Varnish Co., Ltd.) was applied using a sponge roll coater so that the application amount was 40 g / m ² (wet), and 80
It was dried and cured at 20 ° C. for 20 minutes to obtain an inorganic decorative plate having an uneven pattern formed on the surface.

[0021]

According to the present invention, as described above, since a paper-based decorative sheet provided with a pattern printing layer is adhered to the surface of an inorganic base material via an adhesive layer, a fine pattern pattern is formed. In addition, since the coating containing the liquid repellent is applied to the transparent resin layer surface provided on the upper surface of the pattern printing layer, the liquid repellency is increased, the uneven shape is emphasized, and very realistic design Can be obtained.

Further, by using a paper-based decorative sheet provided with a pattern printing layer and a transparent resin layer, the process is simplified, the production efficiency is improved, and materials to be discarded such as a transfer base sheet. Therefore, the cost can be reduced and an inexpensive inorganic decorative plate can be obtained.

Further, by using a coating material containing a lyophobic pigment in a coating material containing a liquid repellent agent, the contrast of the uneven pattern can be further enhanced, a sufficient depth can be obtained, and a sense of quality can be further imparted. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a laminated structure of an inorganic decorative board of the present invention.

FIG. 2 is a cross-sectional view illustrating an example of the method for producing an inorganic decorative board of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inorganic decorative board 2 Inorganic base material 3 Sealer layer 4 Adhesive layer 5 Paper base material sheet 6 Picture printing layer 6a Solid ink layer 6b Picture ink layer 7 Transparent resin layer 8 Paper quality decorative sheet 9 Uneven pattern layer

Claims (3)

[Claims] 1. An inorganic decorative board in which a paper-based substrate sheet, a pattern printing layer, a transparent resin layer, and a concavo-convex pattern layer are sequentially laminated on the top surface of an inorganic-based substrate, wherein the concavo-convex pattern layer is provided with a liquid repellent. An inorganic decorative board formed by applying and curing a paint contained therein. 2. The inorganic decorative plate according to claim 1, wherein the paint containing the liquid repellent is mixed with a pigment having glitter. 3. A step of preparing a paper-based decorative sheet in which a pattern printing layer and a transparent resin layer are laminated on one surface of a paper-based substrate sheet, a step of painting a sealer layer on an upper surface of an inorganic substrate, Bonding the decorative decorative sheet to the sealer layer surface of the inorganic base material via the adhesive layer, and applying and curing a paint containing a liquid repellent on the transparent resin layer surface of the paper-based decorative sheet to form the uneven pattern layer. A method for producing an inorganic decorative board, comprising a step of forming.