JP2007015296A - Design coating film and its forming method and coated article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a design coating film having new appearance which has unique bright feeling and feeling of solidity which have been never formed by coating, its forming method, and a coated article. <P>SOLUTION: The design coating film has a colored coating layer 2 having an embossed surface generating the anisotropic reflection of a light and a coating layer 5 which is formed on the embossed surface of the colored coating layer and contains a metallic pigment expressing the embossed surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a design coating film, a method for forming the same, and a coated article.

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.
JP 2000-33332 A

In view of the above-mentioned present situation, the present invention provides a design coating film having a novel appearance having a unique glitter and stereoscopic effect that could not be formed by painting so far, a method for forming the same, and a coated article It is intended to do.

The present invention provides a colored coating film layer whose surface is an embossed surface causing light reflection anisotropy, and a coating film containing a metal pigment which is formed on the embossed surface of the colored coating layer and exhibits the embossed surface. It is a designable coating film characterized by having a layer.

The embossed surface preferably has a concavo-convex structure with an emboss width of 20 to 1000 (line / inch).
The coating layer containing the metal pigment is preferably one in which the color of the colored coating is visible from the outside through the metal coating layer.

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, a step (4) of curing the coating film having an embossed surface formed by the above step (3), and the above step The step (5) of applying a paint containing a metal pigment on the coating film formed by (4), and the step (6) of curing the coating film containing the metal pigment formed by the above step (5). It is also the formation method of the said designable coating film characterized by this.

The method for forming a design coating film further includes a step (7) of applying a clear coating on the coating film cured in the step (6) and a step of curing the coating film formed in the step (7). (8) 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 paint containing a metal pigment is preferably a thermosetting paint.
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.
Hereinafter, the present invention will be described in detail.

In the present invention, the colored coating layer, the embossed surface formed on the colored coating layer, and the glossy coating formed on the embossed surface cause the specular light reflection anisotropy. The object is to form a coating film having a new design that has never been seen before.

As will be described below with reference to the drawings, an embossed surface that causes anisotropy of light reflection has a property of causing characteristic light reflection on the surface. On the other hand, a coating film containing a metal pigment has a metal-like unique appearance due to reflection of light by the metal pigment. Furthermore, since the coating film containing a metal pigment produces a slight amount of scale, the surface of the colored coating layer appears to be colored when the color of the colored coating layer is transparent.

Here, “color is transparent” means that the color of the colored coating film can be visually recognized from the outside through the metal coating film layer, and the degree thereof does not matter. This is because various designs can be expressed depending on the degree of see-through, so that they can be used properly according to the intended design properties. Therefore, as a result, the case where there is a colored coating film is compared with the case where the colored coating film is not present, and if the developed design is different, it corresponds to “transparent” described here.

By the interaction of these special properties relating to light reflection, light reflection becomes more and more complex, and the coating film of the present invention has an unprecedented and beautiful appearance. That is, the coating film which has the new design which is not in the past based on the effect | action which combined these three elements is obtained.

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.

In the present invention, the coating layer containing the metal pigment has an embossed surface that causes anisotropy of light reflection, and by a synergistic effect with the color from the colored coating layer under the coating layer, The object is to form a coating film having a new design that has never been seen before. That is, a new design that has never been achieved can be obtained by the light reflection performance of the coating layer containing the metal pigment and the anisotropy of light reflection caused by the embossed surface.

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. Note that 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 of the unevenness is represented as a diagram. Design is not obtained by recognition. As shown in FIGS. 7 and 8, the surface of the coating film of the present invention obtained by the example was 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.

Since the coating film of this invention has a coating film layer containing a metal pigment, it has the property of reflecting light by this coating film layer. 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 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.

In addition to this, this invention has a colored coating film layer under the coating film layer containing a metal coating material. The color of such a colored coating layer is partially observed from the outside through the coating layer containing a metal pigment. The presence of such a colored coating film layer has a great influence on the appearance of the coating film, and a coating film appearance peculiar to a mirror finish can be obtained.

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 emboss that causes the light reflection anisotropy is preferably a straight line or a curved line formed with a constant width. Furthermore, a straight line formed with a constant width is more preferable. 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 magnifying glass 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. In addition, the inch and depth described here refer to those after the coating layer containing the metal pigment is formed.

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 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 chrome yellow, yellow iron oxide, red iron oxide, titanium dioxide, carbon black, etc., and as extender pigments, calcium carbonate, barium sulfate, Examples include clay and talc.

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.

It does not specifically limit as a film thickness of the said colored coating film layer, For example, it can be set as 5-100 micrometers. 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 designable coating film of the present invention has an embossed surface as described above on the colored coating film layer, and has a coating film containing a metal pigment thereon. Furthermore, the coating film itself containing the metal pigment exhibits an embossed surface. Thereby, the light reflection by the metal pigment has anisotropy, and a specific coating film appearance can be obtained. In the present specification, the “metal pigment” refers to a pigment having high reflectivity and having a metallic luster, and is not limited to a pigment formed of a metal, such as glass flakes. It also includes a pigment coated with a metal by a method such as vapor deposition on a substrate.

The metal pigment contained in the design coating film of the present invention is not particularly limited. For example, aluminum flake pigment, metal oxide-coated alumina flake pigment, metal oxide-coated silica flake pigment, graphite pigment, bronze powder, tin foil, Gold foil, plastic coated metal pigment, phthalocyanine flake pigment, interference mica pigment, colored mica pigment, metal titanium flake pigment, stainless steel flake pigment, plate-like iron oxide pigment, metal plated glass flake pigment, metal oxide coated plated glass flake pigment, hologram Examples thereof include a pigment, a vapor-deposited aluminum flake pigment, a flake pigment having a multilayer thin film structure of a metal reflection layer, and a flake pigment made of a cholesteric liquid crystal polymer. Two or more of these may be used simultaneously. Among these, aluminum is preferable because it can be easily blended in the paint.

It does not specifically limit as said aluminum, For example, aluminum powder, aluminum foil, etc. can be mentioned. As said aluminum, what becomes an average particle diameter in the range of 1-50 micrometers is preferable. When the average particle diameter is less than the lower limit, the dispersion state in the coating film is deteriorated and the function expression is reduced. If the average particle diameter exceeds the upper limit, it is not preferable because it is necessary to increase the aluminum content.

It does not specifically limit as said aluminum, Commercial products, such as Asahi Kasei Co., Ltd. aluminum paste, Toyo Aluminum Co., Ltd. Alpaste (brand name), can also be used.

The stainless steel is not particularly limited, and examples thereof include flakes. It does not specifically limit as said flaky stainless steel, For example, commercial products, such as Toyo Aluminum Co., Ltd. stainless steel paste (brand name), can be used.

It is preferable that content of the said metal pigment exists in the range of 5-30 mass% with respect to coating-film solid content. When the content is less than 5% by mass, the coating film is insufficiently coated, and sufficient reflectivity may not be obtained, and the intended designability may not be obtained. When the content exceeds 30% by mass, it is difficult to form a paint and the metal pigment may not be retained in the coating film. The content is more preferably in the range of 10 to 20% by mass.

In the coating film containing the metal pigment, components usually used for forming a coating film such as organic resin, pigment, additive and the like can be used in addition to the metal pigment. The organic 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. Can be mentioned.

It does not specifically limit as said pigment, For example, what was illustrated as a color pigment which can be contained in the said colored coating film can be used.

The coating layer containing the metal pigment has a certain scale in order to obtain the desired design properties.

Having a certain scale can be performed by adjusting the kind of pigment, the amount used, the film thickness, and the like. The pigment to be used is preferably a pigment on flakes having a small thickness. For example, in the case of an aluminum pigment, it is preferable to use an aluminum pigment having a thickness of 500 angstroms or less. Here, the thickness of the pigment can be obtained by measuring an electron micrograph. Examples of the aluminum pigment having a thickness of 500 angstroms or less include the Metaxhen series manufactured by Toyo Aluminum Co., Ltd.

Since it has the said permeability | transmittance, various textures can be brought out under the influence of the color of the colored embossed coating film of a lower layer. For example, if the vapor-deposited aluminum clear is the surface and the lower layer is a black embossed surface, it is solid silver, if it is a white embossed surface, it is bright and soft aluminum, Classic modern tone, calm soft dragon shell tone for orange embossing, citrus metallic tone for yellow embossing, silver patina modern tone for green, cold deep metallic tone for blue, In the case of purple, it is solid like black, but in the case of dark silver and pink, the color and design are different from red and silver, and can be changed freely depending on the color density or the coating thickness of the evaporated aluminum clear. be able to.

In the design coating film of the present invention, the coating film itself containing the metal pigment exhibits an embossed surface. As a result, a synergistic effect of the reflection of the metal pigment and the specific reflection by the embossed surface that causes anisotropy of light reflection can be obtained. Therefore, the film thickness of the coating film containing the metal pigment can be appropriately set from the viewpoint of exhibiting an embossed surface and causing a squeeze.

Even if the designable coating film of the present invention is a multi-layer coating film (for example, the one shown in FIG. 5 corresponds to this) composed of two layers of the colored coating layer and the coating film containing the metal pigment. Further, it may be a multilayer coating film having a clear coating layer. FIG. 6 shows a multilayer coating film in which an embossed surface is formed on a colored coating film layer, a thin film coating film layer containing a metal pigment is formed on the embossed surface, and a clear coating film layer is formed thereon. It is a schematic diagram.

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.

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 which the curing reaction has progressed to such an extent that the coating film surface can form embossing, and the composition, properties, embossing method, embossing conditions, etc. of the coating material It is preferable to carry out by finding the curing conditions while adjusting the curing conditions as necessary.

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 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 method for performing the embossing is not particularly limited, and examples thereof include a method of forming a sheet having irregularities on the surface thereof by pressing such as a press on the semi-cured coating film.

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.

The step (4) is a step of curing the coating film having the embossed surface formed by the step (3). The said hardening can be performed by normal hardening conditions according to the kind of coating material.

Step (5) in the method for forming a designable coating film of the present invention is a step of applying a paint containing a metal pigment on the coating film formed by the above step (4). As the paint for forming the coating film, for example, a known paint containing the binder resin as described above can be used, and any form of paint such as water-based paint, solvent-based paint, and powder paint can be used. Can be used.

The coating material containing the metal pigment is preferably curable. 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 for the paint containing the metal 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 metal pigment is preferably applied at a coating amount of ^{2 to 20} g / m ² (in terms of solid content). When it is ² g / m ² or less, coating with a metal pigment becomes insufficient, and good reflection may not be obtained. If the coating is performed at an application amount exceeding 20 g / m ² , the color due to the effect of the scale may be lost and the design feeling may be impaired. On the other hand, if the coating amount is increased too much, the paint is completely applied to the inside of the concave portion of the embossed surface applied by the steps (1) to (4), and the embossed surface disappears. Therefore, it is important to perform the coating so that such a situation does not occur and the coating layer containing the metal pigment exhibits an embossed surface.

A process (6) is a process of hardening the coating film which performed the said process (5). That is, since the step (2) is a step of partially curing to a degree of hardness that allows the step (3) to be performed, in order to obtain good coating film properties, after the step (5), It is necessary to cure the coating film by curing again. The curing method is not particularly limited, and examples thereof include heat irradiation and energy ray irradiation.

The method for forming a designable coating film of the present invention includes a step of forming a clear coating film layer by applying a clear coating composition after performing the above steps (5) and (6). Also good. 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 (7) of forming a clear coating film and the step (8) of curing the coating film formed by the above step (7).

The clear coating that can be used in the step (7) 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, 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 (8) 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.

Unprecedented by producing an anisotropy of specular light reflection by the colored coating layer, the embossed surface formed on the colored coating layer, and the glossy coating formed on the embossed surface A coating film having a new design property can be formed.

The embossed surface that causes anisotropy of light reflection has a property of causing characteristic light reflection on the surface. On the other hand, a coating film containing a metal pigment has a metal-like unique appearance due to reflection of light by the metal pigment. Furthermore, since the coating film containing a metal pigment produces a slight amount of scale, the surface of the colored coating layer appears to be colored when the color of the colored coating layer is transparent.

By the interaction of these special properties relating to light reflection, light reflection becomes more and more complex, and the coating film of the present invention has an unprecedented and beautiful appearance. That is, the coating film which has the new design which is not in the past based on the effect | action which combined these three elements is 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, a black paint having the composition shown in Table 1 below was used. As the metal-containing paint, one having the composition shown in Table 1 below 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.

A roll having a concavo-convex shape after semi-cured under the conditions shown in Table 2 on a test piece obtained by applying the above-mentioned colored paint on the object to be coated at a coating amount of 20 g / m ² (solid content conversion). As a result of pressure bonding, irregularities were formed on the surface. In addition, the roll used in this process is a roll which has an uneven | corrugated shape on the surface by etching the metal surface. The said metal pigment containing coating material was apply | coated by spray so that the application quantity might be 3 g / m < ² > (solid content conversion). 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 embossing pitch of the roll is 250 Line / inch and the depth is 8 μm.

The appearance of the obtained coating film was visually observed and judged based on the following criteria. The results are shown in Table 2.

Surface state after embossing ○: 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. By curing, leveling and uneven shape disappears.
XX: The coating film is hardened too much, and unevenness is not formed by embossing.

Appearance of coating film after step (5) ○: Plated unevenness having denseness was formed on the coating film surface.
(Triangle | delta): The plating-like unevenness | corrugation inferior in sharpness was formed in the coating-film surface.
X: The coating film surface leveled and the unevenness | corrugation disappeared.
X: The metallic surface unevenness | corrugation in which the coating-film surface is inferior to a denseness or whiteness was formed.

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 good evaluation result under all conditions, has a solid and solid silver appearance. there were.

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.

From the results of Table 2 above, it was revealed that the coating film of the present invention has good design properties. Moreover, what scanned the surface of the coating film with the scanner at the time of processing at 180 degreeC for 10 minutes in an Example was shown in FIG. Furthermore, the enlarged view of the surface of FIG. 7 is shown as FIG. From FIG. 8, it was clarified that the coating film obtained in Example 1 had 250 Line / inch irregularities similar to the rolls. Moreover, the emboss depth of the coating film obtained by measuring with an optical microscope was 8 μm.

(Example 2)
A coating film was formed in the same manner as in Example 1 except that a white paint having a different color pigment composition was used. 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 an aluminum metal-like bright and soft color appearance different from 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface of the design coating film of this invention 2 Colored coating layer 3 Coated object 4 Embossed surface which produces the anisotropy of light reflection 5 Coating film containing a metal pigment 6 Clear coating film

Claims (10)

A colored coating layer having an embossed surface that causes light reflection anisotropy, and a coating layer containing a metal pigment that is formed on the embossed surface of the colored coating layer and exhibits the embossed surface Designed coating film characterized by 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). 3. The designable coating film according to claim 1 or 2, wherein the coating film layer containing the metal pigment has a color of the colored coating film visible from the outside through the metal coating film layer. 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);
A step (4) of curing the coating film having an embossed surface formed by the step (3);
Applying a paint containing a metal pigment on the coating film formed by the step (4) (5);
Step (6) of curing the coating film containing the metal pigment formed by the step (5).
The method for forming a designable coating film according to claim 1, 2, or 3. Further, a step (7) of applying a clear paint on the coating film cured by the step (6) and a step (8) of curing the coating film formed by the step (7).
The formation method of the designable coating film of Claim 4 which has these. The method for forming a designable coating film according to claim 4 or 5, wherein the embossing is performed by a roll having an embossing die. The method for forming a designable coating film according to claim 3, 4, 5, or 6, wherein the step (1) is performed on an object to which primer coating is applied. The method for forming a designable coating film according to claim 4, wherein the paint containing a metal pigment is a thermosetting paint. The method for forming a designable coating film according to claim 4, 5, 6, 7, or 8, wherein the article to be coated is a metal plate. A coated article comprising the designable coating film according to claim 1, 2 or 3.