JP2021181173A - Decorative member and production method of decorative member - Google Patents

Abstract

To provide a decorative member capable of securing durability of an ornamental design for a long term, and a production method of the same.SOLUTION: A decorative member comprises: a substrate 2 formed of a cement based material; a coating layer 11 laminated on one surface of the substrate 2; and a pattern layer 6 formed on the coating layer 11. The coating layer 11 includes a sealer layer 3 formed of an epoxy based coating layer, and an elastic coating layer 4, and an intermediate coated layer 5 formed of a first acrylic based coating layer. The pattern layer 6 includes at least any one out of an acrylic based resin, a polyester based resin, and a polyvinyl chloride-vinyl acetate copolymer resin, and is formed of a plurality of ink dots.SELECTED DRAWING: Figure 1

Description

The present invention relates to a decorative member and a method for manufacturing the decorative member.

Conventionally, the decoration of concrete or precast concrete curtain wall (hereinafter, also referred to as PC curtain wall) is generally painted by a craftsman using a brush, a roller, a spray or the like. Therefore, it is often not sufficient in terms of decoration accuracy and reproducibility. In some cases, digital painting such as an inkjet method that performs a printing operation by performing digital control based on digital data may be used. For example, by adopting an inkjet method for ceramic building boards such as cement boards, a method of spraying paint or ink in dot units to apply paint or patterns has been proposed.

Japanese Patent No. 371568

However, its use is limited to temporary decoration such as advertisements, and the durability of the design including patterns should be ensured for an ultra-long period of several years to more than ten years. A possible decorative member has been desired.
Therefore, the present invention has been made by paying attention to the conventional unsolved problems, and is a method for manufacturing a decorative member and a decorative member capable of ensuring the durability of the design for an ultra-long period of time. Is intended to provide.

In order to achieve the above object, the decorative member according to one aspect of the present invention is formed on a base material made of a cement-based material, a paint layer laminated on one surface of the base material, and a paint layer. A pattern layer is provided, and the paint layer has an epoxy-based paint layer and a first acrylic-based paint layer, and the pattern layer is one of an acrylic resin, a polyester-based resin, and a vinyl chloride-vinyl acetate copolymer resin. It is characterized in that it contains at least one of the above and is formed by a plurality of ink dots.

Further, the method for manufacturing a decorative member according to another aspect of the present invention includes a step of laminating a paint layer including an epoxy-based paint layer and an acrylic-based paint layer on one surface of a base material made of a cement-based material. A step of laminating a pattern layer containing at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin on a paint layer is provided, and a step of laminating the pattern layer is provided. It is characterized in that it is a step of ejecting ink on a paint layer by an ink jet method based on digital data and forming a pattern layer by ink dots.

According to the present invention, it is possible to provide a decorative member capable of ensuring the durability of a design for a long period of time.

It is sectional drawing which shows the structural example of the decorative member which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the plane dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiments shown below exemplify a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention describes the materials, shapes, structures, etc. of the constituent parts as follows. It is not specific to things. The technical idea of the present invention may be modified in various ways within the technical scope specified by the claims described in the claims.

The decorative member according to the embodiment of the present invention includes a base material made of a cement-based material, a paint layer laminated on one surface of the base material, and a pattern layer formed on the paint layer. The paint layer has an epoxy paint layer and a first acrylic paint layer, and the pattern layer is at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin. It is a member formed by a plurality of ink dots.
Further, the method for manufacturing a decorative member according to another embodiment of the present invention includes a step of laminating a paint layer containing an epoxy-based paint layer and an acrylic-based paint layer on one surface of a base material made of a cement-based material. , A step of laminating a pattern layer containing at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin on a paint layer, and a step of laminating the pattern layer. Is a manufacturing method which is a step of ejecting ink on a paint layer by an inkjet method based on digital data and forming a pattern layer by ink dots.

[Composition of decorative members]
The decorative member 1 includes a base material 2, a sealer layer 3, an elastic paint layer 4, an intermediate coating layer 5, a pattern layer 6, and a top coat layer 7, and is provided on one surface of the base material 2. , The sealer layer 3, the elastic paint layer 4, the intermediate coat layer 5, the pattern layer 6, and the top coat layer 7 are laminated in this order. The sealer layer 3, the elastic coating layer 4, and the intermediate coating layer 5 correspond to the coating layer 11.
The base material 2 is a member formed by mixing and solidifying at least one kind of components such as sand, gravel, inorganic minerals, inorganic fibers, and organic fibers, cement, and water. It is composed of cement-based materials such as concrete, ceramic siding, GCR (glass fiber reinforced concrete), and mortar wall.

The sealer layer 3 is provided for the purpose of protecting the base material 2 and for improving the adhesion of the elastic coating layer 4, and is formed of, for example, a coating layer of a hard epoxy resin.
The elastic coating layer 4 is provided to prevent cracks in the base material 2, and is formed of, for example, an elastic coating layer made of a soft epoxy resin.
The glass transition point between the hard epoxy resin coating layer serving as the sealer layer 3 and the soft epoxy resin coating layer serving as the elastic coating layer 4 is less than 100 ° C. By setting the glass transition point of the epoxy resin to less than 100 ° C. in this way, the flexibility of the coating film of the sealer layer 3 and the elastic coating layer 4 is increased, and the shape of the base material 2 is changed due to the surrounding environment. The followability of the coating film is improved. That is, the risk of abdominal cracking, abdominal peeling, etc. due to the shape change of the base material 2 is reduced.

The intermediate coating layer 5 is provided for the purpose of protecting the sealer layer 3 and the elastic coating layer 4, and providing a concealing property for preventing the color of the base material 2 formed of concrete or the like from being seen through the surface layer. For example, it is formed of a paint layer of an acrylic resin (first acrylic paint layer).
The pattern layer 6 is a layer formed by digital coating control using an inkjet method, and is formed by a plurality of ink dots formed by applying ink in units of ink outlets. That is, the pattern layer 6 is formed by performing coating control based on digital data in an inkjet coating apparatus and controlling whether or not ink is ejected from the nozzles corresponding to each of the colors.

The pattern layer 6 is made of, for example, at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin. Further, the pattern layer 6 is formed of at least five colors including a black paint and a white paint in addition to the three colors of cyan, magenta and yellow.
Further, by using a black paint as the pattern layer 6, it is possible to express a design in which blackness is emphasized as compared with the case where black is expressed by using the three primary colors of cyan, magenta, and yellow. ..

Further, an epoxy resin paint layer including a hard epoxy resin paint layer to be the sealer layer 3 and a soft epoxy resin paint layer to be the elastic paint layer 4, and an acrylic resin paint layer to be the intermediate coat layer 5. And, it is possible to express "whiteness" that cannot be obtained by making the hue of either one or both of them colorless and transparent, or making the surface shape semi-matte, or coloring. The range of design expression is expanded.
The top coat layer 7 is provided for the purpose of imparting weather resistance and protecting the ink forming the pattern layer 6, and is formed of, for example, a fluorine-based resin, a silicon-based resin, an acrylic resin, or the like. The top coat layer 7 is preferably formed of a paint layer of an acrylic resin (second acrylic paint layer). By laminating the top coat layer 7 on the pattern layer 6, the pattern layer 6 can be protected, and the pattern layer 6 can be prevented from falling off, peeling off, cracking, or the like.

Further, an ultraviolet blocking agent is added to one or more of the sealer layer 3 made of a hard epoxy resin, the elastic paint layer 4 made of a soft epoxy resin, and the intermediate coating layer 5 made of an acrylic resin layer. Has been done. As the ultraviolet blocking agent, a metal oxide such as zinc chloride or an organic tetrahydroxybenzophenone-based ultraviolet blocking agent can be used. The ultraviolet blocking agent may be contained in one of the sealer layer 3 and the elastic coating layer 4 or the intermediate coating layer 5. Further, it is preferable that the ultraviolet blocking agent is contained in the intermediate coating layer 5 made of an acrylic resin.

By adding the ultraviolet blocking agent in this way, deterioration of each layer laminated on one surface of the base material 2 due to ultraviolet rays can be suppressed. Similarly, fading of the pattern layer 6 due to ultraviolet rays can be suppressed, and high designability can be maintained for a long period of time.
Further, at least one of a sealer layer 3 made of a hard epoxy resin, an elastic paint layer 4 made of a soft epoxy resin, an intermediate coat layer 5 made of an acrylic paint layer, and a top coat layer 7 made of an acrylic resin layer. A radical trapping agent is added to the layer. As the radical scavenger, a hindered amine-based radical scavenger can be applied. Specifically, Tinuvin292, Tinuvin123, Tinuvin249, Tinuvin171 manufactured by BASF Japan Ltd., ADEKA STAB LA72 and ADEKA STAB LA-manufactured by ADEKA Corporation. 81, ADEKA scavenger LA-82 and the like can be applied.

By adding a radical scavenger, radicals excited by heat or ultraviolet rays can be detoxified. Therefore, deterioration of the resin can be suppressed, and high designability can be maintained for a long period of time. In particular, the hindered amine-based radical scavenger has a high radical scavenging ability, so that the effect can be expected to continue. The radical scavenger may be arranged on at least one layer of the sealer layer 3 made of an epoxy resin, the elastic paint layer 4 made of a soft epoxy resin, or the intermediate coating layer 5.

Further, the hues of the paint layers other than the pattern layer 6, that is, the sealer layer 3, the elastic paint layer 4, the intermediate coat layer 5, and the top coat layer 7 are colorless and transparent, or the surface shape is semi-matte.
By making the hues of the sealer layer 3, the elastic paint layer 4, the intermediate coat layer 5, and the top coat layer 7 colorless and transparent, or by making the surface shape semi-matte, it is possible to express a design utilizing the texture of the base material 2. Since the base material 2 is composed only of inorganic components such as cement (limestone, clay, silica stone, iron oxide raw material, gypsum), sand, gravel, etc., it is subject to natural loads such as ultraviolet rays and heat like polymer materials. There is no dropout or cracking.

Here, a white pigment is added to at least one of a paint layer made of an epoxy resin to be the sealer layer 3 and the elastic paint layer 4 and a paint layer made of an acrylic resin to be the intermediate coat layer 5. .. As described above, by adding the white pigment to at least one of the paint layer made of epoxy resin and the paint layer made of acrylic resin, the texture of the base material 2 can be erased in the opposite direction, and the accuracy of the design can be erased. Can be further improved. That is, it is possible to conceal fine holes, scratches, color unevenness, etc. on the surface of the base material 2, and the reproduction accuracy of the design in repeated production is improved. When a white pigment is used, the pattern layer 6 is formed on the paint layer 11 composed of the sealer layer 3, the elastic paint layer 4, and the intermediate coat layer 5, that is, the white base layer, that is, the white base layer (paint layer). It will be decorated on top of 11). Therefore, the color reproduction range is large.

Further, at least one of the paint layer made of epoxy resin to be the sealer layer 3 and the elastic paint layer 4 and the paint layer made of acrylic resin to be the intermediate coat layer 5 is toned in a color tone similar to that of the pattern layer 6. You may. In this case, the pattern layer 6 is not provided in the portion where the color of the base material 2 can be visually recognized. Therefore, the usage fee of the paint required for the composition of the pattern layer 6 can be reduced, which is a great economic advantage.

[Manufacturing method of decorative members]
In the cross-sectional view of the decorative member 1 shown in FIG. 1, the base material 2 includes sand, gravel, inorganic minerals, inorganic fibers, organic fibers, and the like, cement, and water. Obtained by mixing, solidifying and then molding.
On one surface of the base material 2, a hard epoxy resin layer to be a sealer layer 3, a soft epoxy resin layer to be an elastic paint layer 4, and an acrylic resin layer to be an intermediate coating layer 5 (first acrylic paint). Layers) and are painted in this order and solidified each time each layer is painted to obtain a laminate of these. At this time, the hard epoxy resin layer to be the sealer layer 3 and the soft epoxy resin layer to be the elastic paint layer 4 are coated and solidified, and then the hard epoxy resin layer and the soft epoxy resin layer are formed. The glass transition point of the resin is formed so as to be less than 100 ° C.

Further, the paint is applied onto the intermediate coating layer 5 based on digital data by using an inkjet method using five paints of cyan, magenta, yellow, black, and white to form the pattern layer 6.
Next, an acrylic resin layer (second acrylic paint layer) to be the top coat layer 7 is coated on the pattern layer 6 and solidified.
As a result, the decorative member 1 in which the sealer layer 3, the elastic paint layer 4, the intermediate coating layer 5, the pattern layer 6, and the top coat layer 7 are laminated in this order is formed on the base material 2 containing the cement-based material. NS.

〔effect〕
The decorative member 1 according to the embodiment of the present invention is decorated by forming a pattern layer 6 on a base material 2 having an inorganic texture such as cement by digital coating based on digital data. Therefore, the accuracy of decoration, that is, the coating position, the coating amount, the color reproducibility, and the like can be improved, and the reproducibility can be improved. As a result, the design is improved.
Further, on one surface of the base material 2, a paint layer made of an epoxy resin to be a sealer layer 3 and an elastic paint layer 4 and a paint layer made of an acrylic resin to be an intermediate coat layer 5 are laminated and cured. ing. Therefore, deterioration of the concrete due to the neutralization reaction consisting of the cement component contained in the base material 2 and carbon dioxide in the air is suppressed, so that the durability of the decorative member can be improved.

Further, the pattern layer 6 is manufactured by digital coating control based on digital data using an inkjet method. Therefore, high accuracy and reproducibility can be obtained.
Further, if the decorative member 1 thus formed is used for outdoor wall decoration, it is possible to realize a wall covering material which is rich in design and has sufficient durability even when used outdoors. can.
It should be noted that the above-described embodiment is an example of the present invention, and the present invention is not limited to the above-mentioned embodiment. As long as it does not deviate, various changes can be made according to the design and the like.

[Example 1]
By weight ratio, 200 sand and 300 gravel are mixed with 100 Portland cement, and then mixed so as to be uniform. Then, water is added at 78 ratio and then mixed well, and ready-mixed concrete. It was created.
Next, the prepared ready-mixed concrete was poured into a mold having a depth of 30 mm, and a tabletop shaker was continuously degassed from the bottom of the mold for 5 minutes. Then, the mold was cured in an oven at 50 ° C. for 24 hours, and then the mold was removed to prepare a base material (base material 2).

A transparent polyamide-modified epoxy resin and TDI (tolylene diisocyanate) as a curing agent are appropriately mixed with the prepared base material, and then painted with a brush aiming at a film thickness of 50 μm, and then 24 in an oven at 40 ° C. After heating for a period of time, a coat layer that also serves as the sealer layer 3 and the elastic paint layer 4 was provided. The glass transition point of the unpainted (cured) resin was measured using a DSC (differential scanning calorimeter) and found to be 110 ° C.

Next, the water-based acrylic emulsion resin was painted with a brush so as to have a film thickness of 100 μm after the water volatilized, and heat-cured in an oven at 80 ° C. for 4 hours and in an oven at 40 ° C. for 20 hours, respectively. The water-based acrylic emulsion resin having a film thickness of 100 μm was milky white in the state of the coating liquid, but became a transparent film (intermediate coating layer 5) after the coating was dried.
Furthermore, on the transparent film, a flatbed type inkjet machine (stage jet manufactured by Tritech Co., Ltd.) is used, and acrylic UV curable ink (cyan, magenta, yellow, black) is used to create a brick-like pattern. A layer (pattern layer 6) was added.
Further, the water-based acrylic emulsion resin was again laminated on the outermost surface layer side of the pattern layer side with a coating amount of 100 μm (top coat layer 7) to prepare the decorative member (decorative member 1) of Example 1.

[Example 2]
In the method for producing the decorative member in Example 1, the same method as in Example 1 was used except that the amount of the curing agent was reduced and the glass transition point of the polyamide-modified epoxy resin was lowered to 104 ° C. A decorative member was produced.
[Example 3]
In the method for producing the decorative member in Example 1, the same method as in Example 1 was used except that the amount of the curing agent was further reduced and the glass transition point of the polyamide-modified epoxy resin was lowered to 100 ° C. The decorative member of was produced.

[Example 4]
In the method for producing the decorative member in Example 1, the same method as in Example 1 was used except that the amount of the curing agent was further reduced and the glass transition point of the polyamide-modified epoxy resin was lowered to 96 ° C. The decorative member of was produced.
[Example 5]
In the method for producing a decorative member in Example 4, a triazine-based water-dispersed ultraviolet absorber Tinuvin 479-DW (N) (manufactured by BASF Japan Ltd.) was added to the acrylic emulsion resin on the surface layer as a weathering agent. The decorative member of Example 5 was produced by using the same method as in Example 4 except that 3 parts by weight was added to 100 parts by weight.

[Example 6]
In the method for producing a decorative member in Example 4, a hindered amine-based liquid radical scavenger Tinuvin 123-DW (N) (manufactured by BASF Japan Ltd.) was used as a weather resistant agent for 100 parts by weight of the main component of the polyamide-modified epoxy resin. Was added in an amount of 1.5 parts by weight. Further, for each of the acrylic emulsion resin of the intermediate layer (intermediate coating layer 5) and the acrylic emulsion resin of the resurface layer (top coat layer 7), 100 parts by weight of the acrylic emulsion resin is subjected to triazine-based water-dispersed ultraviolet rays as a weather resistant agent. 3 parts by weight of the absorbent Tinuvin 479-DW (N) (manufactured by BASF Japan Co., Ltd.) and 5 parts by weight of the hindered amine-based water-dispersed radical scavenger Tinuvin 123-DW (N) (manufactured by BASF Japan Co., Ltd.) were added. Other than that, the decorative member of Example 6 was produced by using the same method as in Example 4.

[Example 7]
In the method for producing the decorative member in Example 6, the white pigment is dispersed in the acrylic emulsion resin of the intermediate layer (intermediate coating layer 5), and the other methods are the same as those in Example 6, and Example 7 is used. The decorative member of was produced. Since the image of the brick was printed based on the white color, the white color of the seam of the brick image (the seam reproduced on the image data, not the actual seam) was expressed by the white color of the base emulsion, so the decoration of the higher design was made. I was able to get the parts.
(In the decorative members of Examples 1 to 6, the seam portion of the image is represented by the base color gray).

[Example 8]
In the method for producing the decorative member in Example 6, the red pigment can be dispersed in the acrylic emulsion resin of the intermediate layer (intermediate coating layer 5), and the white ink can be ejected to the inkjet coating apparatus. The decorative member of Example 8 was produced by using the same method as in Example 6 except that the head was attached. At this time, the white appearance of the seam of the brick image (the seam reproduced on the image data, not the actual seam) was good, and the design feeling was at a level comparable to that of the other Example 7.

[Comparative Example 1]
In the method for producing the decorative member in Example 1, the same method as in Example 1 is used for comparison except that a layer made of a transparent polyamide-modified epoxy resin (a layer that also serves as a sealer layer 3 and an elastic paint layer 4) is not provided. The decorative member of Example 1 was produced.

〔Evaluation method〕
The following physical property evaluations were performed on the prepared decorative members of Examples 1 to 6 and Comparative Example 1.
(1) Freezing and thawing test (a) The prepared decorative member was immersed in water at room temperature for 18 hours, (b) frozen in a freezer at -20 ° C for 3 hours, and (c) added in an oven at 60 ° C for 3 hours. To warm. With (a) to (c) as one cycle, after 5, 10, 15, and 20 cycles, a cellophane tape peeling test was carried out to evaluate the peeling of the coating film.

(2) Weather resistance acceleration test The manufactured decorative member was tested with an accelerated weather resistance tester (manufactured by Dipla Metal Weather Diplau Intes Co., Ltd.) using a metal halide lamp. The test conditions consisted of the following four steps as one cycle, and the sample was rotated every two cycles in order to minimize the influence of the condition variation in the testing machine. As an evaluation method, a cellophane tape peeling test on the surface was carried out every 6 cycles to evaluate the peeling of the coating film.
1: Black panel temperature 63 ° C, layer humidity 50%, UV illuminance 65 mW / cm ² , 20 hours 2: Pure water shower, (no UV irradiation), 30 seconds 3: Black panel temperature 30 ° C, layer humidity 95% , UV unirradiated, 4 hours 4: Pure water shower, (UV unirradiated), 30 seconds The illuminance was measured using an illuminance meter manufactured by Ushio Denki, and the excess and deficiency was adjusted every 72 hours. rice field.
〔Evaluation results〕
Table 1 shows the evaluation results in the freeze-thaw test and the weather resistance promotion test on the decorative members in Examples 1 to 6 and Comparative Example 1.

As shown in Table 1, the decorative members in Examples 1 to 6 and Comparative Example 1 did not peel off due to cellophane tape before freezing and heating. Further, after the freeze-thaw test was carried out, it was confirmed that the decorative member in Examples 1 to 6 did not peel off the coating film even when freezing and heating were repeated for 20 cycles. On the other hand, for Comparative Example 1 in which a layer made of a transparent polyamide-modified epoxy resin was not provided between the base material 2 and the intermediate coating layer 5, a freeze-thaw test was performed and the coating was applied up to 10 cycles. Although peeling of the film was not confirmed, peeling of the coating film was confirmed when freezing and heating were repeated for 15 cycles and further 20 cycles.

Further, the decorative members in Examples 1 to 6 and Comparative Example 1 were not peeled off by the cellophane tape before the treatment of the above four steps was executed. Further, when (2) the accelerated weather resistance test was repeated for 6 cycles, no peeling of the coating film was confirmed in any of the decorative members in Examples 1 to 6 and Comparative Example 1. At the time of repeating 12 cycles, peeling of the decorative member in Examples 1 to 6 was not confirmed, but peeling of the coating film was confirmed in the decorative member in Comparative Example 1.

Further, when 18 cycles and 24 cycles were repeated, peeling occurred in the decorative members in Examples 1 and 2 in which the glass transition point of the polyamide-modified epoxy resin was 100 ° C. or higher, but in Examples 3 to 6. No peeling was confirmed on the decorative member. Further, when 30 cycles and 36 cycles were repeated, peeling of the coating film was confirmed on the decorative member in Examples 3 and 4 in which the glass transition point of the polyamide-modified epoxy resin was less than 100 ° C., but the outermost layer. In Examples 5 and 6 in which the weather resistant agent was added to the top coat layer 7 of the above, peeling of the coating film was not confirmed. Further, when 42 cycles were repeated, the decorative member in Example 5 in which the weather resistant agent was added only to the top coat layer 7 was confirmed to be peeled off, but the polyamide-modified epoxy resin to be the sealer layer 3 and the elastic paint layer 4 and the middle No peeling was confirmed in the decorative member in Example 7 in which a weather resistant agent was added to each of the acrylic emulsion resin as the coating layer 5 and the acrylic emulsion resin as the top coat layer 7.

As described above, the decorative member 1 according to the embodiment of the present invention is formed on the base material 2 made of a cement-based material, the paint layer laminated on one surface of the base material 2, and the paint layer. The paint layer includes an epoxy-based paint layer serving as a sealer layer 3 and an elastic paint layer 4, and an acrylic paint layer serving as an intermediate coating layer 5. It contains at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin, and is formed of a plurality of ink dots applied at positions specified based on digital data.
Therefore, high decoration accuracy can be obtained and high reproducibility can be obtained, and further, high designability can be maintained for a long period of time even when used outdoors. The decorative member 1 can be realized.

1 Decorative member 2 Base material 3 Sealer layer 4 Elastic paint layer 5 Intermediate coating layer 6 Pattern layer 7 Top coat layer

Claims (8)

A base material made of cement-based material and
A paint layer laminated on one surface of the substrate and
With a pattern layer formed on the paint layer,
The paint layer has an epoxy-based paint layer and a first acrylic-based paint layer.
The pattern layer contains at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin, and is characterized by being formed of a plurality of ink dots. .. The decorative member according to claim 1, wherein the paint layer is laminated in the order of the epoxy-based paint layer and the first acrylic-based paint layer from the base material side. The decorative member according to claim 2, wherein the epoxy-based paint layer has a glass transition point of less than 100 ° C. The decorative member according to any one of claims 1 to 3, wherein a second acrylic paint layer is formed on the pattern layer. The decorative member according to any one of claims 1 to 4, wherein at least one of the epoxy-based paint layer and the first acrylic-based paint layer contains an ultraviolet blocking agent. The decorative member according to claim 4, wherein the second acrylic paint layer contains an ultraviolet blocking agent. The decorative member according to claim 5, wherein at least one of the epoxy-based paint layer and the first acrylic-based paint layer contains a radical scavenger. A process of laminating a paint layer including an epoxy-based paint layer and an acrylic-based paint layer on one surface of a base material made of a cement-based material, and
A step of laminating a pattern layer containing at least one of an acrylic resin, a polyester resin, and a vinyl chloride-vinyl acetate copolymer resin on the paint layer.
Equipped with
The step of laminating the pattern layer is a step of ejecting ink on the paint layer by an inkjet method based on digital data and forming the pattern layer with ink dots. Method.

Images