JP2021138065A - Decorative sheet - Google Patents

Abstract

To provide a decorative sheet that can impart high designability.SOLUTION: A decorative sheet 1 has a primer layer 3 and a sputtering layer 5 containing pigment particles and a resin, which are laminated on an inorganic base material 2 in that order from the bottom.SELECTED DRAWING: Figure 1

Description

The present invention relates to a decorative board.

Conventionally, interior materials (decorative boards) based on inorganic boards such as gypsum board, calcium silicate board, and fiber-reinforced cement board are known. The extruded cement plate is a panel extruded into a hollow plate shape using cement, calcium silicate, and inorganic fibers as raw materials. Extruded cement board is a building material that is lightweight, yet has excellent strength, weather resistance, fire resistance, and earthquake resistance, and also has aesthetics and design. The extruded cement plate is not limited to a flat shape, and has a high degree of freedom in design, such as being able to give a rib shape or an embossed pattern to the surface according to the shape of the base when extruded.

Japanese Unexamined Patent Publication No. 2000-43185

However, when imparting design to a conventional extruded cement board, it is common to apply a single color coating to the surface thereof.

Therefore, a technical problem to be solved, which is to impart a high degree of design to the decorative board, arises, and an object of the present invention is to solve this problem.

In order to achieve the above object, in the decorative board according to the present invention, a primer layer and a sputter layer containing pigment particles and a resin are laminated on an inorganic base material in this order from the bottom.

According to this configuration, the decorative board is provided with a sputter layer formed by spraying a sputter paint in which pigment particles and a resin are mixed, so that a high design property can be imparted to the decorative board. Further, by mixing the pigment particles with the resin, the pigment particles can be easily fixed, and the adhesion of the coating film of the decorative board can be improved. Further, by interposing a primer layer that covers fine irregularities (non-landing) on the surface of the inorganic material, the surface of the decorative board can be smoothed and the adhesion of the coating film of the decorative board can be further improved.

Further, in the decorative board according to the present invention, it is preferable that the amount of resin contained in the sputter layer is set to 4 wt% or more.

According to this configuration, when the resin content of the sputter layer is set to 4 wt% or more, the pigment particles are more easily fixed.

Further, in the decorative board according to the present invention, the inorganic base material is preferably a fiber-reinforced cement board.

It is possible to impart high designability to the surface of an inorganic plate, which was previously only painted in a single color.

The vertical sectional view which shows the structure of the decorative board which concerns on this invention.

An embodiment of the present invention will be described with reference to the drawings. In the following, when referring to the number, numerical value, quantity, range, etc. of components, it is limited to the specific number unless it is clearly stated or in principle it is clearly limited to the specific number. It is not a thing, and it may be more than or less than a specific number.

In addition, when referring to the shape and positional relationship of components, etc., unless otherwise specified or when it is considered that this is not the case in principle, those that are substantially similar to or similar to the shape, etc. shall be used. include.

In addition, the drawings may be exaggerated by enlarging the characteristic parts in order to make the features easy to understand, and the dimensional ratios and the like of the components are not always the same as the actual ones. Further, in the cross-sectional view, hatching of some components may be omitted in order to make the cross-sectional structure of the components easy to understand.

In the decorative board 1 according to the present invention, a primer layer 3, a base layer 4, and a sputtering layer 5 are laminated on an inorganic base material 2.

Examples of the material of the inorganic base material 2 include cement board, fiber reinforced cement board, volcanic vitreous multi-layer board, calcium silicate board, magnesium silicate board, etc., and these base materials have high flame retardant performance and strength. Excellent for.

In particular, as the material of the inorganic base material 2, a fiber-reinforced cement plate having excellent strength, impact resistance, and dimensional stability is preferable. The fiber-reinforced cement board can be obtained by using cement as a matrix, blending reinforcing fibers, silica powder, and pigments, adding water to knead them, extruding them, and then autoclaving curing them.

The cement is not particularly limited, and examples thereof include ordinary Portland cement, blast furnace cement, silica cement, mixed cement such as fly ash cement, and alumina cement.

Examples of the reinforcing fiber include inorganic fiber such as glass fiber, carbon fiber and wallastonite, natural organic fiber such as pulp fiber, polyethylene fiber, polypropylene fiber, vinylidene fiber and organic synthetic fiber such as aramid fiber.

The silica component of the silica fine powder becomes a calcium-silicate-based crystal by hydrothermal reaction with the calcium component in the cement during autoclave curing to improve the strength.

The extrusion molding of the inorganic base material 2 is performed using, for example, a screw type extrusion molding machine. If the autoclave curing conditions are 110 to 200 ° C. and the holding time is 1 to 24 hours, a lightweight and high-strength fiber-reinforced cement board can be obtained.

The thickness of the inorganic base material 2 is preferably 50 mm to 100 mm from the viewpoint of strength and ease of handling. The density of the inorganic base material 2 is preferably 0.5 to 2.0 g / cm3. If the density is less than the lower limit, the primer layer 3 is likely to be sucked in, and if the density exceeds the upper limit, the primer layer 3 becomes heavy and the handleability tends to be inferior.

The surface of the inorganic base material 2 is smoothed by surface grinding with sandblasting, shotblasting, dialol, sandpaper, or the like.

The primer layer 3 laminated on the inorganic base material 2 prevents the alkaline component of the inorganic base material 2 from being eluted. The primer layer 3 is formed by applying a primer paint on an inorganic base material 2.

As the primer paint, nylon resin, alkyd resin, epoxy resin, acrylic resin, acrylic modified silicone resin, rubber chloride resin, urethane resin, phenol resin, polyester resin and melamine resin, alkyl silicate or hydrolyzed condensate thereof, etc. can be adopted. be. Further, titanium oxide may be blended in the primer coating material in order to improve the hiding power.

The amount of the primer coating applied may be about 10 to 100 μm in terms of film thickness, and is performed by a known roll coater, flow coater, spray coating or the like. If the coating amount does not reach the lower limit, the adhesion to the base layer 4 tends to be inferior, and if the coating amount exceeds the upper limit, foaming tends to occur and the appearance of the finished product tends to deteriorate.

The base layer 4 is laminated on the primer layer 3. The base layer 4 is formed by applying a base paint toned to white, black, or the like on the primer layer 3.

Base paints are organopolysiloxane resin paints, fluororesin paints, two-component curable acrylic urethane resin paints, acrylic resin paints, epoxy resin paints, polyurethane resin paints, vinyl chloride resin paints, vinylidene chloride resin paints, acrylic silicone resin paints. Etc., and the like is appropriately selected in consideration of the drying property of the coating film, the surface hardness of the coating film, the adhesion to the primer layer 3, and the chemical resistance and stain resistance of the coating film.

The amount of the base paint applied may be about 10 to 100 μm in terms of film thickness, and is carried out by a known roll coater, flow coater, spray coating or the like. If the coating amount is less than the lower limit, the adhesion to the primer layer 3 is likely to be inferior, and if it exceeds the upper limit, foaming is likely to occur and the appearance of the finished product is likely to be deteriorated.

The sputter layer 5 is laminated on the base layer 4. The sputter layer 5 is formed on the base layer 4 by sputter coating.

Spatter coating is performed by applying a sputter coating material obtained by mixing colored pigment particles and a translucent resin. As a result, the colored pigment particles are scattered on the decorative plate 1 in dots. The pigment particles are, for example, silver pearl powder, black fine particles, and the like. Since the surface of the pigment particles is coated with the resin, the adhesion of the sputter layer 5 is improved.

The pearl paint containing an appropriate amount of pearl powder is an organopolysiloxane resin paint, a fluororesin paint, a two-component curable acrylic urethane resin paint, an acrylic resin paint, an epoxy resin paint, a polyurethane resin paint, a vinyl chloride resin paint, and a vinylidene chloride resin. Examples thereof include paints and acrylic silicone resin paints, which are appropriately considered in consideration of paint dryness, paint surface hardness, adhesion to the base layer 4, chemical resistance and stain resistance of the paint, and the degree of dispersion of pearls. select. The amount of resin contained in the sputter layer 5 is preferably at least 4 wt% or more. This is because the pigment particles are difficult to fix at 4 wt%, and it is necessary to add a resin of 4 wt% or more.

The amount of the pearl paint applied may be about 10 to 100 μm in terms of film thickness, and is carried out by a known roll coater, flow coater, spray coating or the like. If the coating amount does not reach the lower limit, the adhesion to the base layer 4 tends to be inferior, and if the coating amount exceeds the upper limit, foaming tends to occur and the appearance of the finished product tends to deteriorate.

Further, the amount of pearl powder added can be arbitrarily adjusted within a range in which the sputter layer 5 can obtain a glossiness peculiar to pearls and the pearls do not settle in the sputter layer 5.

Further, since the sputter layer 5 is translucent, the color development of the decorative plate 1 can be adjusted according to the color tone of the base layer 4. That is, the design of the sputtered appearance sprayed on the surface of the decorative plate 1 can be changed by combining the color tone of the base layer 4 and the color tone of the pigment particles contained in the sputter layer 5.

The amount of the sputter coating material applied may be about 10 to 100 μm in terms of film thickness, and is performed by a known roll coater, flow coater, spray coating or the like. If the coating amount does not reach the lower limit, the adhesion to the base layer 4 tends to be inferior, and if the coating amount exceeds the upper limit, foaming tends to occur and the appearance of the finished product tends to deteriorate.

It is preferable to laminate the topcoat layer 6 on the sputter layer 5 for the purpose of improving the chemical resistance of the decorative plate 1. Further, by laminating the topcoat layer 6, a sense of depth can be given to the sputter layer 5. The topcoat layer 6 is formed by applying a topcoat paint on the sputter layer 5.

Topcoat paints are organopolysiloxane resin paints, fluororesin paints, two-component curable acrylic urethane resin paints, acrylic resin paints, epoxy resin paints, polyurethane resin paints, vinyl chloride resin paints, vinylidene chloride resin paints, acrylic silicone resin paints. Etc., and the like is appropriately selected in consideration of the drying property of the coating film, the surface hardness of the coating film, the adhesion to the sputter layer 5, the chemical resistance and the stain resistance of the coating film.

The coating amount of the topcoat paint may be about 10 to 100 μm in terms of film thickness, and is carried out by a known roll coater, flow coater, spray coating or the like. If the coating amount is less than the lower limit, the adhesion to the sputter layer 5 is likely to be inferior, and if it exceeds the upper limit, foaming is likely to occur and the appearance of the finished product is likely to be inferior.

Further, by adopting the same paint (for example, fluororesin paint) for the base layer 4, the sputter layer 5, and the top coat layer 6, a coating film having excellent weather resistance can be formed on the surface of the decorative board 1.

Next, Examples and Comparative Examples according to the present invention will be described in detail.

[Example 1]
The decorative board 1 according to the first embodiment is constructed by the following procedure.
[Inorganic base material (fiber reinforced cement board)]
Mace (registered trademark) MHN-6060A (manufactured by Aica Tech Kenzai Co., Ltd., thickness 60 mm) is prepared as an extruded cement plate.

[Primer layer]
The surface of the inorganic base material 2 is ground with dialol and sandpaper, and a primer paint is sprayed onto the inorganic base material 2 so that the film thickness of the primer layer 3 is 35 to 45 μm, and then at 120 ° C. It was dried for 20 minutes.
・ Main agent: Eponix ceramic primer Main agent (manufactured by Dai Nippon Toryo Co., Ltd., epoxy resin type)
・ Hardener: Eponix Ceramic Primer Hardener (manufactured by Dai Nippon Toryo Co., Ltd., amine type)
-Mixing ratio: Main agent: Hardener = 85:15

[Underground layer]
The base paint was applied onto the primer layer 3 by spraying so that the film thickness of the base layer 4 was 30 to 40 μm, and then dried at 120 ° C. for 20 minutes.
・ Main agent: V-Freon # 200 Topcoat Main agent (manufactured by Dai Nippon Toryo Co., Ltd., fluororesin)
-Curing agent: V-fluorocarbon # 200 topcoat curing agent (manufactured by Dai Nippon Toryo Co., Ltd., isocyanate-based)
-Mixing ratio: Main agent: Hardener = 90:10

[Spatter layer]
The sputter layer 5 was sprayed with a pearl paint to a predetermined film thickness on the base layer 4, and then dried at 120 ° C. for 20 minutes.
-Paint: Pearl spatter paint (manufactured by Dai Nippon Toryo Co., Ltd., fluororesin), pearl addition amount 5%

[Topcoat layer]
The topcoat paint was sprayed onto the sputter layer 5 so that the film thickness of the topcoat layer 6 was 30 to 40 μm, and then dried at 12 ° C. for 20 minutes.
・ Main agent: V-Freon # 200 clean layer Main agent (manufactured by Dai Nippon Toryo Co., Ltd., fluororesin)
-Curing agent: V-fluorocarbon # 200 clean layer curing agent (manufactured by Dai Nippon Toryo Co., Ltd., isocyanate-based)
-Mixing ratio: Main agent: Hardener = 80:20

[Example 2]
The decorative board 1 according to Example 2 was obtained by replacing the sputter layer 5 of Example 1 with the following sputter layer 5 (enamel), and other than that, it was carried out in the same manner as in Example 1.

[Spatter layer]
The sputtered paint obtained by mixing a predetermined amount of black pigment particles with V-fluorocarbon # 200 (manufactured by Dainippon Paint Co., Ltd., fluororesin) so that the sputtered layer 5 has a predetermined film thickness is sprayed into the base layer. After coating on 4, it was dried at 120 ° C. for 20 minutes.

[Example 3]
The decorative board 1 according to the third embodiment omits the base layer 4 of the first embodiment, and other than that, the same as that of the first embodiment was carried out.

[Example 4]
The decorative board 1 according to the fourth embodiment omits the base layer 4 of the second embodiment, and other than that, the same as that of the second embodiment was carried out.

[Example 5]
The decorative board 1 according to the fifth embodiment omits the topcoat layer 6 of the first embodiment, and other than that, the same as that of the first embodiment was carried out.

[Example 6]
The decorative board 1 according to the sixth embodiment omits the topcoat layer 6 of the second embodiment, and other than that, the same as that of the second embodiment was carried out.

The following Comparative Examples 1 to 3 were prepared as comparison targets of Examples 1 to 6.

[Comparative Example 1]
In Comparative Example 1, the primer layer 3 of Example 1 was omitted, and other than that, it was carried out in the same manner as in Example 1.

[Comparative Example 2]
In Comparative Example 2, the primer layer 3 of Example 2 was omitted, and other than that, it was carried out in the same manner as in Example 2.

[Comparative Example 3]
In Comparative Example 3, the sputter layer 5 of Example 1 was replaced with the following sputter layer 5, and other than that, it was carried out in the same manner as in Example 1.

[Spatter layer]
Pearl powder (aluminum paste) was sprayed onto the base layer 4 so that the sputter layer 5 had a predetermined film thickness, and then dried at 120 ° C. for 20 minutes.

The evaluation results of Examples 1 to 6 and Comparative Examples 1 to 3 are shown in Table 1.

The test methods and evaluation methods for Examples 1 to 6 and Comparative Examples 1 to 6 are as follows.

[Appearance test]
It was visually confirmed that there were no abnormalities in appearance such as cracks or blisters, and if there were no abnormalities in appearance, it was marked as ◯, and if there were any abnormalities, it was marked as x.
[Adhesion test]
The cross-cut method conforming to JIS K5600-5-4 was used. If peeling did not occur in 25 squares at 4 mm intervals, it was evaluated as ◯, and if peeling occurred, it was evaluated as x.

According to Table 1, no abnormality was found in the appearance test and the adhesion test for Examples 1 to 6. On the other hand, when Examples 1 and 2 and Comparative Examples 1 and 2 are compared, in Comparative Examples 1 and 2, if the primer layer 3 is omitted, the unevenness (non-landing) on the surface of the inorganic base material 2 becomes conspicuous, and the decorative plate 1 The appearance of the decorative plate 1 tends to be impaired, and the adhesion between the inorganic base material 2 and the base layer 4 cannot be ensured due to the unevenness of the surface of the inorganic base material 2, and the painted surface of the decorative plate 1 is easily peeled off. I understand. Further, when comparing Example 1 and Comparative Example 3, it can be seen that in Comparative Example 3, since the aluminum paste is not coated with the resin, the aluminum paste is poorly fixed.

1 ・ ・ ・ Decorative board 2 ・ ・ ・ Inorganic base material 3 ・ ・ ・ Primer layer 4 ・ ・ ・ Underlayer layer 5 ・ ・ ・ Sputter layer 6 ・ ・ ・ Topcoat layer

Claims (3)

A decorative board characterized in that a primer layer and a sputter layer containing pigment particles and a resin are laminated in this order from the bottom on an inorganic base material. The decorative board according to claim 1, wherein the amount of the resin contained in the sputter layer is set to 4 wt% or more. The decorative board according to claim 1 or 2, wherein the inorganic base material is a fiber-reinforced cement board.

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