JP2008136971A - Design coating film, its formation method, coated article, coated sheet metal, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a design coating film with new appearance having a peculiar feeling of luminosity and stereoscopic effect which could not be formed conventionally. <P>SOLUTION: This design coating film comprises a colored coating later having an embossed surface for producing an anisotropy of light reflection. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a design coating film, a forming method thereof, a coated article, a coated metal plate, and a manufacturing method thereof.

A coating film is formed on the surface of many articles such as various industrial products, building materials, and large structures for the purpose of surface protection and design. When imparting design properties to the surface of an article with such a coating film, in addition to blending various components in the paint, many attempts have been made to obtain a unique appearance by processing the coating film itself. .

One example of such a design coating film is a coating film having irregularities formed on the coating film surface. As such a coating film, for example, an uneven pattern is formed on the surface of the coating film by pressing a design roller on which the uneven pattern is formed against the coating film (see, for example, Patent Document 1).

Such a concavo-convex pattern has a three-dimensional design that cannot be obtained with a smooth coating film by forming a concavo-convex pattern with a large pitch on the coating film surface and visually recognizing the concavo-convex pattern generated by the concavo-convex pattern. It is what.

However, in recent years, with the diversification of consumer preferences, the importance of designs for consumers to select products is increasing. For this reason, the coating film which has a new external appearance different from such a simple uneven | corrugated pattern is desired.

In Patent Document 2, a colored base film is heat-sealed and laminated on an upper film formed by mixing and molding a predetermined amount of colored beads in a transparent plastic material, and the surface of the upper film layer is embossed. A matte finished plastic decorative sheet is disclosed. A colored film is used as the base of the sheet, and a molded film is used as the top. What is done by embossing is a matte finish. Therefore, it is not described that a new design property is imparted to the coating film.

Patent Document 3 discloses a colored embossed paper in which a resin layer transparent in a sculpture pattern is provided on the surface of a colored substrate, and the color of the substrate is expressed in a pattern. This embossed paper has a colored base material, and the embossed resin layer is transparent. In addition, the base material is paper, plastic film, synthetic paper, etc., which is formed by embossing is a sculpture pattern, and as in the present invention, it is possible to give a new design to the coating film. Not listed.
JP 2000-33332 A Japanese Patent Laid-Open No. 5-318693 JP 2002-285492 A

In view of the above-mentioned present situation, the present invention is a design coating film having a novel appearance having a unique radiance and three-dimensional appearance that could not be formed by painting so far, a method for forming the same, a coated article, and a coated metal plate And it aims at providing the manufacturing method.

The present invention is a design coating film comprising a colored coating layer having an embossed surface on the surface for causing anisotropy of light reflection.

The embossed surface preferably has a concavo-convex structure with an emboss width of 20 to 1000 (line / inch).

The present invention includes a step (1) for forming a colored coating layer, a step (2) for partially curing the coating formed by the step (1) to form a semi-cured coating, and the step (2). A step (3) of performing an embossing process to cause light reflection anisotropy to the semi-cured coating film, and a step (4) of curing the coating film having an embossed surface formed by the above step (3). It is also the formation method of the said designable coating film characterized by these.

The method for forming a design coating film further includes a step (5) of applying a clear coating on the coating film cured in the step (4) and a step of curing the coating film formed in the step (5). (6) may be included.

The embossing is preferably performed by a roll having an embossing mold.
The step (1) may be performed on an object to which primer coating is applied.
The article to be coated is preferably a metal plate.
The present invention is also a coated article characterized by having the above-described designable coating film.
This invention is also a coating metal plate which has a metal plate and the said designable coating film formed in the surface of the said metal plate.
The present invention includes a step (1) of forming a colored coating film layer on a metal plate, a step (2) of partially curing the coating film formed by the above step (1), and the above step (2). Step (3) for performing an embossing process for generating light reflection anisotropy in the semi-cured coating film formed by (2), and (4) for curing the coating film having an embossed surface formed by the above-mentioned process (3). It is also a manufacturing method of the said coating metal plate containing.
Hereinafter, the present invention will be described in detail.

In the present invention, anisotropy of light reflection is caused by the colored coating layer and the embossed surface formed on the colored coating layer, thereby providing a design with a new glittering feeling and a three-dimensional feeling that has never been seen before. It aims at forming the coating film which has.

As will be described below with reference to the drawings, the embossed surface that causes anisotropy of light reflection has a property of causing characteristic light reflection on the surface.

When these special properties relating to light reflection interact, the coating film of the present invention has an unprecedented and beautiful appearance, and a coating film having a new design that has never been obtained before is obtained. It is done.

This will be described with reference to the drawings. FIG. 1 shows an example of a coating film on which embossing is formed. In FIG. 1, continuous and linear grooves are formed in the vertical direction in the drawing. Since this emboss is a fine unevenness, each unevenness does not have a design property that can be visually recognized.

The present invention is to form a coating film having an embossed surface in which a coating layer that exhibits coloring by containing a coloring pigment has an anisotropy of light reflection and has an unprecedented design. It is the purpose. In other words, an unprecedented new design can be obtained by the color development performance of the coating layer containing the color pigment and the anisotropy of light reflection caused by the embossed surface on the surface of the coating layer. .

The effect | action which the designable coating film of this invention has such a new designability is demonstrated based on FIGS. FIG. 1 shows an example of a coating film on which embossing is formed. In FIG. 1, continuous and linear embossing is formed in the vertical direction in the drawing. FIG. 1 is an enlarged view, and the emboss is described so that it can be visually recognized. However, in reality, this emboss is a fine unevenness, and each unevenness is represented as a diagram. Design is not obtained by recognition. In FIGS. 7 and 8, the surface of the coating film of the present invention obtained by the example is scanned with a scanner. Although the actual size shown in FIG. 7 cannot visually recognize the unevenness, it can be seen that the unevenness can be recognized in FIG.

And when light is applied to the coating film from the light source 1 and the coating film is viewed from the observation point 1, and when the coating film is irradiated from the light source 2 to the coating film and viewed from the observation point 2 Compare. In these two cases, there is no difference except that the position of the light source and the position of the observation point are the vertical direction or the horizontal direction with respect to the continuous direction of the emboss.

2 and 3 are cross-sectional views of the cross-section 1 and the cross-section 2 of FIG. 1, and the case where light is incident in this direction is illustrated.

The coating film of the present invention has a property of reflecting a certain proportion of light on the surface. This reflection is greatly affected by the uneven shape developed on the surface of the coating film, but roughly divided, there are reflection elements as shown in FIG. 2 and reflection elements as shown in FIG. So there is total reflection. When light is emitted from the light source 1 and the coating surface is observed from the observation point 1, the reflection element as shown in FIG. 2 is recognized as a reflection element in the vertical direction, and the reflection element as shown in FIG. Is recognized as a reflective element in the horizontal direction. On the other hand, when irradiating light from the light source 2 and observing from the observation point 2, each element is recognized as being vertical.

For this reason, in these two cases, the reflection state of light is completely different, and it is recognized as a visually completely different appearance. Thus, in this specification, embossing that provides a state that can be recognized as a visually different appearance due to the difference between the light source position and the observation point is referred to as “anisotropy of light reflection”. "Embossing to be generated". In addition, if the uneven | corrugated width is too large, it will be visually observed as a mere unevenness | corrugation, and it will not be observed as anisotropy of light reflection. If the width of the unevenness is too small, a light diffraction phenomenon occurs, and the pattern is observed as a rainbow-colored design, which may be different from the object of the present invention. The coating film containing such a colored pigment gives a unique glass-like glossy appearance without using a luster pigment.

A picture, a continuous pattern, or the like can be formed on the coating film by using an emboss that causes the light reflection anisotropy. The pictures and continuous patterns formed in this way are completely different from those drawn by simple uneven patterns or color painting, and have a unique appearance due to the reflection state of the surface being different depending on the viewing direction. is there.

An example of such a coating film of the present invention is shown in FIG. In the coating film shown in FIG. 4, it is cut into nine rectangular portions, each having a continuous embossment with irregularities in different directions. Since these all have anisotropy of light reflection, the light reflection state is recognized differently depending on the viewing direction. Since the nine portions have different embossing directions, the respective portions are recognized as visually different. And, as the viewing angle changes, it has a unique design property that the visual effect changes.

The embossing that causes the light reflection anisotropy may be a straight line or a curve formed substantially in parallel with a certain width, or a point group arranged to cause the light reflection anisotropy. preferable. Here, the point group arranged so as to cause anisotropy of light reflection is, for example, a point group, but is not a point arranged in a completely uniform state, but the points are substantially parallel to each other. Examples thereof include those arranged so as to have the same properties as the formed straight lines or curves. More specifically, a straight line or a curved line formed with a constant width and substantially parallel may be formed by a broken line.

The emboss is preferably formed at a pitch of 20 to 1000 line / inch. By being formed with such a width, good anisotropy of light reflection can be obtained. If it is less than 20 lines / inch, a rough concavo-convex pattern is formed, so that sufficient light reflection anisotropy may not be obtained. If it exceeds 1000 lines / inch, fine processing becomes extremely difficult, and it may be difficult to produce stably. The embossing is preferably 40 to 800 line / inch, and more preferably 60 to 600 line / inch or more. Here, “line / inch” is the number of lines formed by the formation of irregularities per inch, and can be counted by a method such as enlarging the surface of the coating film with a loupe or the like.

The embossing preferably has a depth of 1 to 100 μm. If it is less than 1 μm, the anisotropy of light reflection becomes weak, and an excellent design property may not be obtained. If it exceeds 100 μm, there may be a problem that processing is difficult. The depth is more preferably in the range of 1 to 30 μm, and still more preferably in the range of 3 to 10 μm.

The present invention has a colored coating layer. The colored coating film may be colored in an arbitrary color with a known coloring pigment. The color of the colored coating film is not particularly limited, and examples thereof include red, orange, yellow, green, blue, indigo, purple, white, black, gray, and beige.

The pigment is not particularly limited, and examples thereof include organic azo lake pigments, insoluble azo pigments, condensed azo pigments, phthalocyanine pigments, indigo pigments, perinone pigments, perylene pigments, quinophthalone pigments, dioxazines. Pigments, quinacridone pigments, isoindolinone pigments, metal complex pigments, inorganic yellow iron oxides, red iron oxides, titanium dioxide, carbon black, etc., and extender pigments include calcium carbonate, barium sulfate, clay, talc Etc.

In addition to the colored pigment, the colored coating layer includes an acrylic resin, an alkyd resin, a polyester resin, an epoxy resin, a urethane resin, a polycarbonate resin, a fluororesin, a silicate resin, a chlorine resin, a polyolefin resin, and these It contains a resin such as a modified resin.

The colored coating layer may be applied in the form of an object to which a primer is applied depending on the properties of the object to be coated. The primer coating is not particularly limited, and examples thereof include coating with known primers such as acrylic, acrylic emulsion, epoxy, urethane, polyisocyanate, sodium silicate, and the like. Either may be sufficient.

The content of the color pigment is preferably in the range of 5 to 30% by mass with respect to the solid content of the coating film. When the content is less than 5% by mass, the coating becomes insufficient, and sufficient concealability and reflectivity may not be obtained, and the target design property may not be obtained. When the content exceeds 30% by mass, it is difficult to form a paint, and there is a possibility that the colored pigment cannot be retained in the coating film. The content is more preferably in the range of 10 to 20% by mass.

In addition to the color pigment and the resin, the coating film containing the color pigment includes a curing agent, an antifoaming agent, an anti-settling agent, an ultraviolet absorber, an antioxidant, a leveling agent, a surface conditioner, an anti-sagging agent, Components that are usually used for forming a coating film, such as thickeners, lubricants, and crosslinkable polymer particles, can be used. The resin is not particularly limited, and examples thereof include acrylic resins, alkyd resins, polyester resins, epoxy resins, urethane resins, polycarbonate resins, fluororesins, silicate resins, chlorinated resins, polyolefin resins, and modified resins thereof. be able to.

Even if the designable coating film of the present invention is a coating film obtained by embossing the above colored coating film layer (for example, the one shown in FIG. 5 corresponds to this), the multilayer coating film further has a clear coating film layer. It may be a coating film. FIG. 6 is a schematic view showing a multilayer coating film in which an embossed surface is formed on a colored coating film layer and a clear coating film layer is formed thereon.

The design coating film as described above can be formed, for example, by the following method. The method for forming a designable coating film shown below is also a part of the present invention.

Step (1) in the method for forming a designable coating film of the present invention is a step of forming a colored coating film layer on an object to be coated. The colored coating layer can be formed by applying an arbitrary colored paint that can form a colored coating as described above. The form of the paint is not particularly limited, and any form of paint such as water-based paint, solvent-based paint, and powder paint can be used.

The paint containing the color pigment is required to have curability. Sufficient coating film properties can be obtained by having curability. The curability may be room temperature curable, thermosetting, energy ray curable (for example, ultraviolet curable, etc.), or a paint having these properties. From the viewpoint of ease of process control, etc., a thermosetting paint is preferred.

The curing system of the coating material containing the color pigment is not particularly limited, and any curing system such as a melamine curing system or an isocyanate curing system can be used.

The paint containing the coloring pigment may be a commercially available one. For example, Nippe Super Coat 360HQ (manufactured by Nippon Fine Coatings Co., Ltd.) can be used.

The coating material containing the color pigment is preferably applied at a coating amount of 3 to 300 g / m ² (in terms of solid content). If it is 3 g / m ² or less, the concealing effect by the color pigment may be insufficient, or embossing may not be formed well, which is not preferable. Even if the coating is performed at a coating amount exceeding 300 g / m ² , the effect is not good, which is economically disadvantageous.

Step (2) is a step of partially curing the coating film formed in the above step (1) to form a semi-cured coating film. That is, it is a step in which the surface of the coating film is partially cured by performing heat, energy ray irradiation, or the like, so that the embossing that causes the above-described light reflection anisotropy can be performed.

When embossing is applied to an uncured coating film, it will be embossed in a state where the resin fluidity has not completely disappeared. Cannot be maintained, and a coating film having good design properties cannot be formed. Moreover, since the coating film in a completely cured state does not have processability, it is extremely difficult to perform emboss formation. Therefore, good embossing can be performed by partially curing the coating film in the step (2) to make it a semi-cured state and then performing embossing.

The semi-cured coating film refers to a coating film in a state where the curing reaction has progressed to such an extent that the coating film surface can form emboss, and the composition, properties, embossing method, and embossing conditions of the paint. It is preferable to carry out by finding the curing conditions while adjusting the curing conditions as necessary. In particular, when curing is performed by thermosetting, the flowability of the resin temporarily increases when heated again by the following step (4), and thus the uneven shape formed by step (3) may not be maintained. is there. Therefore, in this case, the partial curing in the above step (2) indicates a cured state that does not cause such a problem.

That is, the coating material to be used is cured under various conditions, and then the step (3) described in detail below is performed to find the conditions under which a good embossed surface is formed, and depending on the found coating conditions. Suitable processing conditions for the step (2) can be found.

For example, as a coating film on which an embossed surface is applied, a polyester resin / melamine resin as described in the examples is applied at 20 g / m ² and a confirmation test of curing conditions is actually performed when embossing is performed by metal roll pressing. The results obtained in FIG. FIG. 9 shows that good curing can be performed within a range sandwiched between two graphs with time as the horizontal axis and curing temperature as the vertical axis. If such a graph is created for the paint that forms the coating film that forms the embossed surface, curing conditions can be set according to the graph to form a suitable emboss.

For example, when the colored coating layer on which the embossed surface is applied is 20 g / m ² and embossing by metal roll pressing is performed, the processing conditions of step (2) were determined by the above experiment. It became clear that the condition of seconds was appropriate.

The step (3) is a step of embossing that causes the light-reflective anisotropy to occur in the semi-cured coating film formed in the step (2). That is, it is a process for forming an embossed shape that is essential for obtaining the effect in the designable coating film of the present invention as described above.

The embossing method is not particularly limited, and a method of forming a desired uneven shape on the surface by pressing a roll having the desired uneven shape on the surface onto the semi-cured coating film. The method etc. which are formed by pressure bonding, such as a press, on the semi-cured coating film can be mentioned.

The roll having the irregularities formed on the surface can be made of any material such as metal, rubber or resin, and the irregularities can be formed on the roll by a known processing method. .

Specifically, as the method of the above step (3), for example, when the object to be coated has a continuous shape such as a metal plate, a processing step using an embossing roll is provided on the line. It is preferable in that it can be continuously produced.

A process (4) is a process of hardening the coating film which performed the said process (3). That is, since the step (2) is a step of partial curing to such a degree that the step (3) can be performed, in order to obtain good coating film properties, by performing the curing again after forming the emboss. It is necessary to cure the coating film. The curing method is not particularly limited, and examples thereof include heat irradiation and energy ray irradiation.

The formation method of the designable coating film of the present invention may include a step of forming a clear coating layer by applying the clear coating composition after performing the step (4). As a result, it is possible to prevent the embossed unevenness from being worn and to obtain a coating film having excellent durability. Such a coating film is preferably formed by the step (5) of forming a clear coating film and the step (6) of curing the coating film formed by the above step (5).

The clear coating that can be used in the step (5) is not particularly limited. For example, an acrylic resin, an alkyd resin, a polyester resin, an epoxy resin, a urethane resin, a polycarbonate resin, a fluororesin, a silicate resin, a chlorine resin, Examples thereof include clear paints containing polyolefin resins and modified resins thereof. In addition, any form of paint such as water-based paint, solvent-based paint, and powder paint can be used.

The curing conditions in the above step (6) are not particularly limited, and can be carried out by selecting suitable conditions according to the type of clear paint to be used.

The method for forming a design coating film according to the present invention includes a galvanized steel plate, a zinc / aluminum alloy plated steel plate, an aluminum / zinc alloy plated steel plate, a zinc / iron alloy plated steel plate, an aluminum plated steel plate, an aluminum plate, or a stainless steel plate. Board; ceramics base material such as slate, cement, calcium silicate board, wood piece cement board; ceramics, glass, plastic, wood, stone, concrete, fiber, fabric, paper, those consisting of a plurality of base materials among these, The present invention can be applied to coating of any material such as a laminate, an elastic waterproof film, or a seal. Especially, the raw material which has planarity like a metal plate, a plastics etc. is preferable from the point which can form a fine unevenness | corrugation suitably with a roll.

A coated article formed with the above-described designable coating film is also one aspect of the present invention. The coated article is not particularly limited, and examples thereof include building materials, interior goods, electrical products, and automobile parts.

The painted metal plate of this invention has a metal plate and the said designable coating film formed in the surface of the said metal plate. That is, the coated metal plate is obtained by using a metal plate as an object to be coated in the coated article of the present invention. Although it does not specifically limit as said metal plate, For example, a zinc plating steel plate, a zinc / aluminum alloy plating steel plate, an aluminum / zinc alloy plating steel plate, a zinc / iron alloy plating steel plate, an aluminum plating steel plate, an aluminum plate, stainless steel, for example A steel plate etc. can be mentioned.

The painted metal plate can be produced by the method for producing a painted metal plate of the present invention. The method for producing a coated metal plate includes a step (1) of forming a colored coating layer on the metal plate, and a step (2) of partially curing the coating film formed by the step (1) to form a semi-cured coating film. , A step (3) of performing an embossing process for generating anisotropy of light reflection on the semi-cured coating film formed by the step (2), and a coating film having an embossed surface formed by the step (3). Including step (4). The manufacturing method of the said coating metal plate is performed according to process drawing shown in FIG. 10, for example. FIG. 10 shows a manufacturing method in the case where the metal plate has a coil shape, but when the metal plate has a cut plate shape, it can be manufactured in the same manner by devising the conveyance of the plate.

FIG. 10 is a system configuration diagram schematically showing an example of a coating apparatus for forming a design coating film on a coiled metal plate. In addition, the manufacturing method of the coating metal plate of this invention is not limited to the example shown in FIG.

In this coating apparatus, first, the coiled metal plate 12 wound around the rewinding reel 11 is rewound, and the rewound metal plate 12 is temporarily stored in the inlet side accumulator 13.

The metal plate 12 enters the surface treatment device 14, where a surface treatment (previous for removing foreign matter such as oil or rust adhering to the surface of the metal plate 12 or rust and enhancing the adhesion of the paint to the metal plate 12 Processing). After the surface treatment, a primer coating device may be provided on the back side, and a front side may be provided as necessary. By performing primer coating, the rust prevention performance of the metal plate can be further improved.

After the front side treatment is performed, the metal plate 12 enters a coating machine (not shown) provided with a roll coater 16 and a roller 15, where a liquid colored paint is applied to the front side of the metal plate 12. A cured colored coating layer is formed (step (1)).
Next, the metal plate 12 enters the heating device 17, where the uncured coating film formed on the surface of the metal plate 12 is partially cured to become a semi-cured coating film (step (2)).
Next, the metal plate 12 enters an embossing machine (not shown) provided with an embossing roller 19 and a roller 18, where embossing for causing light reflection anisotropy in the semi-cured coating film is performed. (Step (3)).
Next, the metal plate 12 enters the baking apparatus 20, where the baking treatment is performed, and the coating film having the embossed surface is cured (step (4)).

Thereafter, the coated metal plate 21 manufactured by performing the processes (1) to (4) is temporarily stored in the outlet-side accumulator 22, and then wound on the take-up reel 23.

Anisotropy of glass-like light reflection can be generated by the colored coating layer and the embossed surface formed on the colored coating layer. Thereby, the coating film which has the new designability which has not existed until now can be formed.

The embossed surface that causes anisotropy of light reflection has a property of causing characteristic light reflection on the surface.

The interaction of these special properties related to light reflection makes the light reflection more and more complex, and the coating film of the present invention has an unprecedented and beautiful appearance. A coating film having a new design that has never been obtained can be obtained.

EXAMPLES Hereinafter, although an Example is hung up and demonstrated in more detail about this invention, this invention is not limited only to these Examples. In the examples, “part” means “part by mass” unless otherwise specified, and “%” means “% by mass” unless otherwise specified.

(Example 1)
As the colored paint, the composition shown in the following Table 1 (trade name “Nippe Super Coat 360HQ”, manufactured by Nippon Fine Coatings Co., Ltd.) with a gray hue was used. As an object to be coated, a galvanized steel sheet coated with 5 μm of a primer after phosphoric acid treatment was used.

On the object to be coated, the paint containing the color pigment was applied by a roll coater so that the coating amount was 20 g / m ² . After semi-curing the test piece coated with the color pigment-containing paint under the conditions shown in Table 2, a roll having a concavo-convex shape was pressure-bonded to form concavo-convex on the surface. Thereafter, it was cured at 180 ° C. for 10 minutes. In addition, the roll used in the crimping | compression-bonding process is a roll which has an uneven | corrugated shape as shown in FIG. Here, the emboss pitch of the roll is 250 Line / inch and the depth is 8 μm. The semi-curing was tested using HIGH-TEMP OVEN HPS-222 (manufactured by Tabai) at an exhaust damper opening of 30 °.

The appearance of the obtained coating film was visually observed at the end of step (3) and at the end of step (4), and judged based on the following criteria. The results are shown in Table 2.
○: Complete irregularities were formed on the coating film surface.
(Triangle | delta): The unevenness | corrugation inferior to incomplete sharpness was formed in the coating-film surface.
X: Adhesive and the coating film adheres to the roll.
X: It is leveled by hardening after embossing, and the uneven shape disappears.
XX: The coating film is hardened too much, and unevenness is not formed by embossing.

Further, the above test was repeated while changing the curing time and the curing temperature in detail to search for curing conditions that can be cured. The results are shown in FIG. The range described in this figure is an appropriate curing condition when the above paint is used.

FIG. 7 shows the result of scanning the surface of the coating film with a scanner when treated at 180 ° C. for 10 minutes in the examples. Furthermore, the enlarged view of the surface of FIG. 7 is shown as FIG. From FIG. 8, it was revealed that the coating film obtained by the example was formed with unevenness of 250 Line / inch similar to the roll. Moreover, the emboss depth of the coating film obtained by measuring with an optical microscope was 8 μm.

When the film was semi-cured at 130 ° C. for 60 seconds, the appearance changed according to the viewing angle, and had a new and beautiful appearance with a unique glittering glitter.

(Example 2)
In Example 1 above, a clear coating (Super Fine DI-F J15 manufactured by Nihon Fine Coatings Co., Ltd.) was rolled onto the coating film obtained after semi-curing at 130 ° C. for 60 seconds (the one subjected to Step 4). Painted by coater. The coating amount was 20 g / m ² . The coating film thus obtained also had a new beautiful appearance, like the coating film of Example 1 above. The embossing was 250 Line / inch and the depth was 8 μm.

In particular, the surface of the coating film obtained by an experiment conducted under a semi-curing condition of 130 ° C. for 60 seconds, which was a favorable evaluation result under all conditions, has a unique glittering radiance and three-dimensional appearance with a silver-like appearance. It was what had.

(Example 3)
A coating film was formed in the same manner as in Example 1 except that the color pigment used was changed from a gray color to a beige color, and the color pigment was changed. As for the coating conditions, the semi-curing process was performed at 130 ° C. for 60 seconds, and the curing process was performed at 180 ° C. for 10 minutes. The obtained coating film had a bright and soft color appearance with brightness and three-dimensional feeling different from those of the coating film obtained in Example 1. The obtained coating film had unevenness of 250 Line / inch similar to the roll. The embossing depth was 8 μm.

The designable coating film of the present invention can be used for imparting excellent designability to various articles such as building materials, interior goods, electrical products, and automobile parts.

It is a figure for demonstrating the designable coating film of this invention. It is a schematic diagram for demonstrating reflection of the light which injected from the light source 1 in FIG. It is a schematic diagram for demonstrating reflection of the light which injected from the light source 2 in FIG. It is a figure which shows an example of the designable coating film of this invention. It is a figure which shows an example of sectional drawing of the designable coating film of this invention. It is a figure which shows an example of sectional drawing of the designable coating film of this invention. It is the image which read the designable coating film of Example 1 with the scanner. The image read with the scanner of the designable coating film of Example 1 is expanded. It is a figure which shows the suitable hardening range of the process (2) used as the semi-hardened coating film in Example 1. FIG. It is a figure which shows typically an example of the manufacturing method of the coating metal plate of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface of the designable coating film of this invention 2 Colored coating layer 3 Coated object 4 Embossed surface 5 which produces the anisotropy of light reflection 5 Clear coating film 11 Rewinding reel 12 Metal plate 13 Entrance side accumulator 14 Surface treatment apparatus 15, 18 Roller 16 Roll coater 17 Heating device 19 Embossing roller 20 Baking device 21 Painted metal plate 22 Outlet side accumulator 23 Take-up reel

Claims (10)

A designable coating film comprising a colored coating layer having an embossed surface that causes anisotropy of light reflection. The designable coating film according to claim 1, wherein the embossed surface has an uneven structure having an embossed width of 20 to 1000 (line / inch). A step (1) of forming a colored coating layer;
A step (2) of partially curing the coating film formed by the step (1) to form a semi-cured coating film;
A step (3) of performing an embossing to cause light reflection anisotropy in the semi-cured coating film formed by the step (2);
Step (4) of curing the coating film having an embossed surface formed by the step (3).
The method for forming a designable coating film according to claim 1 or 2, wherein: Further, a step (5) of applying a clear paint on the coating film cured by the step (4) and a step (6) of curing the coating film formed by the step (5).
The method for forming a designable coating film according to claim 3, comprising: The method for forming a designable coating film according to claim 3 or 4, wherein the embossing is performed by a roll having an embossing die. The said process (1) is a formation method of the designable coating film of Claim 3, 4 or 5 performed on the to-be-coated object which gave primer coating. The method of forming a designable coating film according to claim 3, 4, 5, or 6, wherein the article to be coated is a metal plate. A coated article comprising the designable coating film according to claim 1. A painted metal plate comprising a metal plate and the designable coating film according to claim 1 or 2 formed on a surface of the metal plate. Forming a colored coating layer on the metal plate (1),
A step (2) of partially curing the coating film formed by the step (1) to form a semi-cured coating film;
A step (3) of performing an embossing to cause light reflection anisotropy in the semi-cured coating film formed by the step (2);
Step (4) of curing the coating film having an embossed surface formed by the step (3).
The manufacturing method of the coating metal plate of Claim 9 characterized by the above-mentioned.