JPH08224812A - Decorative sheet with large irregularities - Google Patents

Abstract

PURPOSE: To provide a decorative sheet having large irregularities of extremely high design properties composed of a decorative sheet base having large irregularities and also having smooth surfaces on the projected sections or irregular patterns of decorative feeling thereon and provided with a desired pattern layer and a transparent top coat layer for protecting the pattern layer formed on the surfaces of large projected sections. CONSTITUTION: A substrate film layer 22 is formed on the whole surface of a decorative base 21 having large recesses and projections on its surface and also having smooth surfaces formed on the projected sections T or irregular patterns of delicate feeling formed thereon, and further a decorative layer 24 and a transparent top coat layer 25 are formed on the surfaces of projected sections T.

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 an uneven portion provided on the surface of a decorative board base material and a pattern layer provided on the surface of the uneven surface, and more particularly to a brick or a brick on the surface of the base material. The present invention relates to a decorative plate having a large pattern of irregularities with a joint having a joint pattern imitating a wall material using tiles, and a pattern layer provided on the surface of the protrusion, which has a very high design.

[0002]

2. Description of the Related Art Conventionally, for exterior and interior of houses,
Further, various decorative boards are used as furniture members. In recent years, with the trend toward higher grades and higher designs, products having an uneven pattern on the surface thereof have been favored. In particular, a veneer that imitates a high-grade brick or tile as a wall material is much simpler than the construction of a real brick or tile.
And it can be constructed at low cost.

However, since these decorative plates are manufactured mainly for the purpose of decorating them with a concavo-convex pattern, they are currently behind in terms of color design.
That is, most products are painted with a single color paint,
Alternatively, only two colors are applied by using different colors for the joints. In addition, recently products that consider the design by direct gravure printing method are sold,
The design effects obtained by these methods were limited and less than satisfactory compared to real bricks and tiles.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and its object is to form a large uneven portion on the surface and a smooth surface for the convex portion. Alternatively, it is made of a decorative board substrate having a fine uneven pattern on the surface, and a large pattern with a very high design in which a desired pattern layer and a transparent top coat layer for protecting it are provided on the surface of this large pattern. To provide a decorative plate having

[0005]

In order to solve the above-mentioned problems, the present invention provides a decorative plate having a large uneven surface on the surface and a smooth surface or a fine uneven pattern on the surface of the convex (T). A base coating film layer (22) is provided on the entire surface of the base material (21), and a pattern layer (24) and a transparent top coat layer (25) are further provided on the surface of the convex portion (T). To do.

Further, a colored coating layer (23) having a color tone different from that of the underlying coating film is provided between the underlying coating film layer (22) on the surface of the convex portion (T) and the pattern layer (24). Is characterized by.

Further, the glossiness of the base coat layer (22) is different from that of the transparent top coat layer (25).

The decorative board base material (21) is made of a cement-based inorganic base material.

The present invention will be described in detail below with reference to the drawings. The present invention has a large uneven portion and its convex portion (T) on the surface.
On the smooth surface or on the entire surface of the decorative plate base material (21) having a fine uneven pattern, the colored undercoat layer (2
2) is provided, and the pattern layer (24) (printing ink layer (13) in the transfer sheet) is transferred using a transfer sheet having the pattern layer (24) formed only on the convex surface, and this pattern layer Provided is a decorative plate having a large pattern with a transparent topcoat layer (25) provided thereon.

FIG. 1 shows the structure of a decorative board having large projections and depressions according to the present invention. Veneer base material for decoration (21)
Can use wood-based materials such as fiberboard,
Although not limited, a cement-based inorganic base material is preferable in consideration of exterior use and the like. Large rugged portions (H, T) are provided on the surface of the base material, and a colored undercoat layer (22) is applied to the surfaces of the concave portions (H) and the convex portions (T) by air spraying or the like. Further, a colored coating film layer (23) is provided on the convex surface by printing or the like, and a pattern layer (2
4) and a transparent top coat layer (25) formed by coating are sequentially laminated.

The base coating layer (22) is determined by the suitability for coating on a decorative board substrate, the adhesion to the pattern layer to be transferred, and the site where the decorative board is used. For example, in a fiber-reinforced cement board for exterior use (showing the decorative board base material (21)), a two-component curable acrylic urethane resin is suitable. As this coating method, known methods such as an air spray method and a general coating method can be used. Further, preferably, only in the convex portion (T) of the large uneven portion, the colored coating layer (2) having a color tone different from that of the base coating layer (22).
3) is preferably provided to enhance the color effect of the design layer (24). In this case, a screen printing method or a roll coater may be used.

FIG. 2 shows the structure of the transfer sheet used for forming the pattern layer. The transfer sheet (32) is a base sheet (1
The peeling layer (12) and the printing ink layer (13) are sequentially laminated on the surface of 1). The base sheet (11) is determined by the surface condition of the base material to be transferred.
If the surface of the base material has a shape having fine irregularities, it is preferable to use a thermoplastic resin film capable of following the fine irregularities by heat during transfer. Specifically, a resin film selected from vinyl chloride, polyethylene, polypropylene, nylon, polyester and the like can be used. The type and thickness of the resin can be appropriately selected in consideration of the degree of unevenness on the surface of the base material and the transfer temperature. However, at the transfer temperature of 150 ° C. to 180 ° C., the thickness is 100 μm.
A vinyl chloride resin film of m or less is suitable.

In addition to the thermoplastic resin film, synthetic resin film such as polyethylene terephthalate, acrylic resin, or polypropylene resin laminated paper may be used as the base sheet (1) if the surface of the decorative plate base material (21) is smooth.
It can be used as 1). The method for forming the following layers on the base sheet (11) is as follows:
It can be performed by a gravure printing method, a screen printing method, an offset printing method, or the like.

First, the material of the release layer (12) can be appropriately selected according to the material of the base sheet.
Like polyethylene terephthalate resin film,
If it has a peeling function from the printing ink itself,
There is no particular need to provide it. In the case of a resin film having no peeling function from the printing ink, for example, a vinyl chloride resin fill, polyvinyl butyral resin is suitable as the peeling layer.

The ink for the printing layer ink layer (13) is appropriately determined depending on the site to be used. For example, when durability is required, such as for exterior applications, an inorganic pigment-based material is used as the color material, and weather resistance is used. The synthetic resin binder used in this ink is determined in consideration of elongation during heating, durability of the final product, and the like. For example, a mixture or copolymer of fluororesin, acrylic resin, styrene resin, alkyd resin, polyamide, polyester, polyvinyl chloride, polyvinyl acetate, or a combination thereof can be used.

FIG. 3 shows a method of transferring the pattern layer using a transfer sheet. The uneven surface of the decorative plate substrate (21) coated with the base coating layer (22) and the transfer sheet (32) shown in FIG.
Install so as to contact the printing ink layer (13) side of
Press from the back side of the transfer sheet with a heat roll (33),
The transfer layer (14) is transferred to form a pattern layer (24).
The heat roll (33) used at this time has a surface on which a rubber or the like that follows the unevenness is wound when a fine uneven pattern is formed on the convex portion (T) of the decorative plate base material. use. Silicon rubber having a rubber hardness of 30 degrees and a wall thickness of 20 mm or more is preferable, although it depends on the depth of the unevenness in the fine uneven pattern formed on the convex portion (T).

Furthermore, in order to form the transparent top coat layer (25) on the pattern layer (24), screen printing or a roll coater is used. In the screen printing, printing can be performed only on the convex portion (T) to be decorated. In the case of a roll coater, a layer is applied only to the convex portions (T) depending on the coating method. As the synthetic resin used for the top coat layer, for example, when durability such as exterior is required, it is preferable to use fluororesin, acrylic silicone resin, or the like.

[0018]

According to the decorative board having large ruggedness of the present invention,
By coating a transparent top coat layer with a pattern layer and a roll coater on the large convex surface of the decorative board base,
With a deeper design expression, the texture of the recesses (joints) can be expressed differently from the surface of the projections due to the underlying coating layer, resulting in a decorative board that is more like a real tile or brick. In addition, by providing a colored coating layer having a different color tone from that of the underlying coating layer between the underlying coating layer on the convex portion and the pattern layer, the depth of the pattern layer is increased and a texture close to the real thing is expressed. Can
A decorative board with high designability can be obtained.

[0019]

EXAMPLES Specific examples will be described below.

<Example 1> A substrate sheet having a thickness of 50
Using a μm semi-cured vinyl chloride sheet, a release layer made of polyvinyl butyral resin, a coloring pigment (aluminamide yellow, phthalocyanine blue, dianthraquinonidryl red), and a gravure printing method on the sheet.
A printing ink layer (brick pattern) made of acrylic resin was sequentially laminated to obtain a transfer sheet (32).

As the decorative plate base material (21), large concave and convex portions are provided, and the concave portion (H) is provided with brick-like joints, while the convex portion (T) (becomes the brick portion) surface. For this, a fiber reinforced cement plate provided with a fine concavo-convex pattern was used, and a base coating layer (22) was provided on the entire surface of this base material. This undercoat layer is a white two-component curing type urethane coating compounded with titanium oxide as a pigment, and 80 / m ² using an air spray.
And was dried in an oven at 80 ° C. for 9 minutes.

The pattern layer (24) is transferred by superposing it on the surface of the fiber reinforced cement plate with the surface of the printing ink layer (13) of the transfer sheet (32) inside, and from the back surface of the transfer sheet, the surface temperature is 160 ° C., It was pressed with a hot roll having a rubber hardness of 30 degrees. Pressing conditions are pressure 10kg / cm, speed 5
m / min. After peeling off the base sheet (11), an acrylic silicone type gloss clear top coat (25) is applied on the convex (T) surface of the fiber reinforced cement plate having the pattern layer (24) by a roll coater. did.
The coating amount was 50 g / m ² and this was dried in an oven at 120 ° C. for 15 minutes and then left at room temperature for one day.

In the obtained decorative plate, the concave portion (H) which is a joint portion is white, and the brick portion which is a convex portion (T) is different from the joint portion due to the delicate pattern by printing and the gloss and depth of the top coat. It had a texture and had an extremely high design effect.

Example 2 A substrate sheet having a thickness of 25
A color pigment (iron oxide ocher, iron oxide tea, phthalocyanine blue) and a printing ink layer (tile pattern) made of an acrylic resin were sequentially laminated on the surface of a polyethylene terephthalate sheet of μm by a gravure printing method to prepare a transfer sheet.

As a base material for the decorative plate, a large rugged portion is provided, and a tile-like joint is provided in the recessed portion, while a fiber reinforced cement board having a smooth surface on the protruding portion (which becomes a tile portion). Was used to form a base coating layer over the entire surface of this substrate. This undercoat layer was formed by applying a black two-component curable urethane paint containing carbon black as a pigment to 80 / m ² using an air spray and drying it in an oven at 80 ° C. for 9 minutes. Further, a white two-component curing type urethane paint containing titanium white as a pigment was applied by a roll coater only on the convex surface of the large concave and convex portion. The coating amount was 40 g / m ² , and the coating was dried in an oven at 80 ° C. for 3 minutes.

The transfer of the pattern layer is carried out by superposing the surface of the fiber sheet on the fiber reinforced cement plate with the printing ink layer surface of the transfer sheet inside, and from the back surface of the transfer sheet with a heat roll having a surface temperature of 160 ° C. and a rubber hardness of 30 degrees. Pressed. The pressing conditions were a pressure of 10 kg / cm and a speed of 5 m / min. After the substrate sheet was peeled off, a fluorine-based gloss clear top coat was applied by a roll coater on the convex surface of the fiber reinforced cement plate on which the pattern layer was formed. Coating amount is 50g / m
As No. ² , this was dried in an oven at 120 ° C. for 15 minutes and then left at room temperature for one day.

In the obtained decorative plate, the concave portion which is the joint portion is black, and the tile portion which is the convex portion is a very design effect having a texture different from that of the joint portion due to the delicate pattern by printing and the gloss and depth of the top coat. Was high.

[0028]

According to the present invention having the above-described structure, a decorative plate base material having a large surface unevenness and a convex portion having a smooth surface or a fine uneven pattern, and only the large convex portion has unevenness By providing a harmonious desired pattern layer and a transparent top coat layer, a decorative board with high designability can be obtained. By providing a fine uneven pattern on the convex surface, it is possible to express a texture equivalent to that of a real brick. Also, by providing a colored coating film with a color tone different from that of the base coating layer on the convex surface, it is possible to increase the depth of the pattern layer formed on the convex portion and express bricks and tiles with high designability, as well as joints. Due to the difference in color tone from the part, a three-dimensional effect is created as if using a real product. Furthermore, by using a cement-based inorganic base material as a decorative board base material, it is possible to increase durability and to use it not only for exteriors but also for wall materials such as living rooms and furniture materials, etc. And so on, various excellent effects occur.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a decorative board according to an embodiment of the present invention, which has a large pattern of projections and depressions, in which a fine uneven pattern is provided on the surface of the projections.

FIG. 2 is a cross-sectional view showing an example of a transfer sheet for forming a pattern layer on a decorative board having large projections and depressions of the present invention.

FIG. 3 is an explanatory view showing a transfer method for forming a pattern layer on a decorative board having large projections and depressions of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Substrate sheet 12 ... Release layer 13 ... Printing ink layer (picture layer) 14 ... Transfer layer 21 ... Decorative plate substrate 22 ... Undercoat coating layer 23 ... Colored coating layer 24 ... Design layer 25 ... Topcoat layer 31 ... Decorative plate substrate 32 provided with a base coating film ... Transfer sheet 33 ... Heat roll H ... Recessed portion T ... Convex portion

Claims (5)

[Claims] 1. A large-scaled uneven portion is provided on the surface, a base coating film layer is provided on the entire surface of a decorative plate substrate having the convex surface as a smooth surface, and a pattern layer and a transparent top coat are provided on the convex surface. A decorative board having large ruggedness characterized by having a layer. 2. The decorative board having large patterns of protrusions and depressions according to claim 1, wherein fine protrusions and depressions are provided on the surface of the protrusions. 3. A colored coating layer having a color tone different from that of the underlying coating layer is provided between the underlying coating layer and the pattern layer on the surface of the convex portion. A decorative plate having a large pattern of unevenness as described in. 4. The decorative board having large ruggedness according to claim 1, wherein the undercoat layer and the transparent topcoat layer have different glossinesses. 5. The decorative board having large projections and depressions according to claim 1, wherein the decorative board base material is made of a cement-based inorganic base material.