Technical field
[0001]
The present invention relates to a precoated metal sheet.
This application, on March 22, 2016, claiming priority on Japanese Patent Application No. 2016-56852 filed in Japan, the contents of which are incorporated herein.
BACKGROUND
[0002]
Home appliances, metal used construction materials, automobile field and the like plate was often painted is performed after processing. Meanwhile, in recent years, the surface of the metal plate, covering the pre-colored coating (colored coating) and may be processed in a state coated with a coating film. A metal plate painted is performed after processing and referred to as post-coating a metal plate, a metal plate to be processed in a state of covering the colored coating is sometimes referred to as pre-coated metal sheet.
　Recently, reflecting the growing like interior palatability, exclusive design property has been demanded in the precoated metal sheet, designed to apply a metallic coating on the pre-coated metal sheet surface it is frequently used. Demand for consumer paint colors are diversified, small metallic paint of the difference in color tone and luster of the change by line-of-sight direction is one of them.
[0003]
　Incidentally, the precoated metal sheet metallic coating is applied, simply and may be called a pre-coated metal sheet, and a case that called metallic precoated metal plate. Similarly, in the case where the post-coat metal plate metallic coating is applied, simply referred to as post-coating the metal plate, and a case that called metallic post coated metal plate. Also, sometimes referred to as flip-flop property of the change in color tone and luster by line-of-sight direction. The flip-flop property is large, indicating that the color tone and luster varies greatly depending on viewing direction, and flip-flop property is small, indicating that hardly changes the color tone and luster by line-of-sight direction.
[0004]
　Most prior art relating to metallic precoated metal plate, and it is an object to obtain a strong colored coating of metallic appearance.
　For example, Patent Document 1, excellent whiteness and metallic luster, and, in order to form a flip-flop of the large coating film with orienting in parallel the aluminum flakes of the coating surface, the uncured base coating and applying an aqueous dispersion of aluminum flakes in the paint surface.
　Patent Documents 2 and 3, and a large metallic coating film of the flip-flop property, to produce a molded article for a thermoplastic resin composition having a sense of metallic aluminum powder flake aluminum pigment and a high aspect ratio is bright pigment to, and flaky graphite pigment, a technique for adding interference pearl mica are described.
[0005]
　Patent Document 4, a metallic coating composition with excellent hiding the substrate of developing pearl opacifying feeling and iris feeling with reduced color of Kuroajikan, titanium dioxide pigment, the pigment-bearing flake aluminum pigment, other than titanium dioxide colored pigments, discloses a metallic coating composition according to the composition components pearl pigment and film-forming resin.
　Patent Document 5, a method of precoated metal metallic finish with glitter, via a primer coat on the metal plate, or not via, micaceous iron oxide powder containing α- iron oxide 60 wt% or more discloses a method of coating an organic solvent type paint containing film-forming resin and colored pigments.
[0006]
　Patent Document 6, vehicles, metal oxide coated alumina flake pigment (A), and aluminum flake pigments or particulate titanium dioxide pigment (B-1), containing a glittering coating composition characterized by having a hiding property It discloses a thing.
　Patent Document 7 (1) aluminum flake pigments, (2) interference mica pigment having a dark region, (3) the interference glitter pigment other than the interference mica pigment having a dark region of (2), and (4) It discloses a bright coating composition containing the vehicle.
[0007]
　Patent Document 8, a coating composition capable of forming a coating film excellent in chemical resistance and weather resistance, a number average molecular weight from 5000 to 30,000, a hydroxyl value 5 ~ 100 mg KOH / g, the fatty acid-modified polyester is oil length from 3 to 30% containing a polyester resin component of the resin (A1) containing 50 to 100 wt% (a), butyl etherified melamine resin (B1) melamine resin component containing 50 to 100 wt% (B) and luster pigment component (C) It discloses a coating composition.
　Patent Document 9, when coated with 2 coats 1 bake coating method, there is no hue change due to layer mixing between the metallic base coating film and clear coating film excellent in transparency, there is a dense brilliancy, flip-flop property as a strong coating film, urea-modified acrylic resin (a), the urethane-modified polyester resin (B), curing agent (C), the solvent-borne metallic base coating composition containing a luster pigment (D) and the inorganic fine particles (E) It discloses.
[0008]
　Patent Document 10, on at least one surface of the metal plate, the organic resin A and film-forming components, coating surface comprises an aluminum pigment C inactivated treated flaky alpha (thickness: 1.5 ~ 10 [mu] m) having discloses chromate-free coated metal sheet having a metallic appearance.
CITATION
Patent Document
[0009]
Patent Document 1: Japanese Patent 2000-000514 JP
Patent Document 2: Japanese Patent 2000-271536 JP
Patent Document 3: Japanese Patent 2000-319521 JP
Patent Document 4: Japanese Patent 6-299100 JP
Patent Document 5: Japanese Unexamined Japanese Patent Application Laid-Open No. 2-212564
Patent Document 6: Japanese Patent 2000-86945 JP
Patent Document 7: Japanese Patent 2001-164191 JP
Patent Document 8: Japanese Patent 2014 -9288 JP
Patent Document 9: Japanese Patent 2005-220289 JP
Patent Document 10: International Publication WO2013 / 065354
Summary of the Invention
Problems that the Invention is to Solve
[0010]
　For metallic post coated metal plate, in order to have a sufficient metallic luster even paint thinner tends corners, the thickness of the coating film including the corner portion is required 30 ~ 100 [mu] m. Drying time after coating, it is necessary to time depending on the thickness of the coating film.
[0011]
　On the other hand, metallic precoated metal plate (in particular, metallic precoat steel plate) is to be produced in a continuous production line, have been limited length of the heating drying line after coating, it is necessary to complete the drying in a short time. Therefore, the thickness of the coating film and 3 ~ 30 [mu] m, a thin compared to the thickness of the coating film of the metallic post coated metal plate.
　Incidentally, when the rapidly dried in a short time a large thickness coatings were bumping by solvent in the coating film is rapidly heated and evaporated, defects called popping in the coating film is frequently, metallic precoated metal plate the appearance of the deteriorates.
[0012]
　For coating metallic precoated metal plate is thin thickness, oriented strongly glitter flake (scale-like), the polarization plane of the bright pigment luster pigment is placed in a state aligned in parallel with the film surface . As a result, the appearance of the metallic precoated metal plate, metallic feeling strong when viewed from a certain direction, metallic effect becomes weak when viewed from another direction (i.e., flip-flop effect becomes stronger) tend.
[0013]
　Metallic precoated metal plate has the appearance as described above, Patent Documents 1 to 10, for the purpose of obtaining a metallic precoated metal plate having improved or stronger flip-flop of the metallic effect of metallic precoated metal plate. In other words, as in the present invention, a small change in color tone and luster by line-of-sight direction (i.e., weak having flip-flop property) prior art relating Metallic precoated metal plate with little.
[0014]
　The present invention has been made in view of the above circumstances, a small change in color tone and luster by line-of-sight direction, i.e., to provide a precoated metal sheet having a weak flip-flop property (metallic precoated metal plate) for the purpose.
Means for Solving the Problems
[0015]
　The present invention is to solve the above problems, adopts the following means in order to achieve the object.
[0016]
(1) precoated metal sheet according to one embodiment of the present invention, a metal plate, provided on at least one surface of the metal plate, and glitter, an average particle size of 200 ~ 400 nm content 0.5 containing a white pigment is ~ 4.0% by weight, comprising: a coating film which is a film thickness of 5 ~ 30 [mu] m, a, the white pigment, titanium oxide, zinc oxide, barium sulfate, basic carbonate and silica It is at least one selected from the group consisting of, wherein the content of the bright pigment in the coating and a composition in weight percent when the B content of the white pigment composition in weight percent B / the value of a is 0.03 to 0.27.
[0017]
(2) In the precoated metal sheet according to (1), wherein the average particle size of the white pigment may be 250 ~ 350 nm.
[0018]
(3) In the precoated metal sheet according to (1) or (2), the bright pigment may be an aluminum flake.
[0019]
(4) In the precoated metal sheet according to any one aspect of the above (1) to (3), the value of the B / A may be 0.05-0.20.
[0020]
(5) In the precoated metal sheet according to any one aspect of the above (1) to (4), light is incident at an incident angle of 45 ° to the surface, the angle of specular reflection light is emitted in the light 0 ° and, when the incident position of the light is 90 °, is the L15 is lightness in 15 ° measured using a variable angle color-difference meter, which is a difference between L110 is a lightness in 110 ° L15-L110, 70 may be less than or equal to.
[0021]
(6) In the precoated metal sheet according to any one aspect of the above (1) to (5), on the surface of the coating film may further include a clear coating.
Effect of the invention
[0022]
　According to this aspect, it is possible to provide a small precoated metal sheet change in color tone and luster by line-of-sight direction.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023]
It is a diagram showing the measurement principle of the lightness L according to FIG. 1 bending color difference meter.
It is a schematic view showing the FIG. 2A] cross-sectional structure of the post-coating the metal plate according to the prior art.
[FIG 2B] is a schematic view showing a sectional structure of a precoated metal plate according to the prior art.
It is a schematic view showing a sectional structure of a precoated metal sheet according to FIG. 2C] The present embodiment.
3 is a schematic diagram showing the structure of a precoated metal sheet according to the present embodiment.
4 is a schematic diagram showing the structure of a precoated metal sheet according to the present embodiment.
DESCRIPTION OF THE INVENTION
[0024]
　First described findings was the background leading to the present invention.
　The present inventors have found that in order to solve the above problems, first, a post-coating the metal plate, in the precoated metal sheet was examined differences in properties of the coating film.
　Results of the investigation, the post-coating the metal plate, since the thickness of the relatively coating to the thickness of the bright pigment is large, in the coating film, high orientation degree of freedom of the bright pigment, the post-coated metal plate incident light is found that there is a tendency to diffuse reflection.
[0025]
　On the other hand, the present inventors have found out the following points with respect to pre-coated metal sheet. That is, since the thickness of the relatively coating to the thickness of the bright pigment is small, in the coating film, polarization planes of the bright pigment is oriented in parallel orientation with respect to the coating surface. As a result, light incident on the precoated metal sheet is often reflected regularly, Thus, the color tone and luster of the differences is larger by line-of-sight direction (i.e., flip-flop property increases).
[0026]
　The present inventors have found that in order to reduce the flip-flop property in precoated metal sheet, by an appropriate amount mixed fine white pigment in the coating film, and found that it is possible to reduce the flip-flop property, the present invention led was.
[0027]
　Then, the present inventors have found that in precoated metal plate according to the precoated metal sheet and the embodiment according to the post-coated metal plate and the prior art according to the prior art, to investigate the cause of the flip-flop property is different.
[0028]
　Figure 1 is a diagram showing the principle of color measurement by bending color difference meter. 1, against the incident light from the direction of the upper left oblique 45 ° to the measuring surface (coated surface), as the angle relative to the direction of the right oblique 45 °, which corresponds to specular reflection (0 °) (that is, light state incident position as the 90 °) of the incident light side, 15 °, 25 °, 45 ° (vertically upward), 75 °, and that by placing the light receiver in the direction of 110 °, to measure the lightness L, etc. the shows.
[0029]
　Generally, human vision, (sometimes expressed as L * a * b) Lab can be represented in the spatial, of a red direction, -a is green direction, b is the yellow direction, -b represents blue direction, L is represents lightness (brightness).
　The present inventors have found that among the above-described measures, the flip-flop of differences metallic coating film was found that due to the difference in the L values mainly represents the lightness.
　That is, the present inventors have found that large flip-flop property in the case the difference in L value is larger by angles, if the difference in L value by a small angle was found that the flip-flop property is small.
[0030]
　The present inventors have measured the L value was placed on each angle light receiver, and L value of 15 °, if the difference △ L of L value at 110 ° is 70 or less, even in the pre-coated metal sheet, and knowledge to be able to achieve a similar flip-flop property and post-coated metal plate.
[0031]
　Figure 2A is a schematic view showing a sectional structure of a post-coated metal plate according to the prior art. Figure 2B is a schematic view showing a sectional structure of a precoated metal plate according to the prior art. Figure 2C is a schematic view showing a sectional structure of a precoated metal sheet according to the present embodiment.
　As shown in FIG. 2A, the post-coat metal plate according to the prior art, for the thickness of the coating film is thick relative to the 30 ~ 100 [mu] m, less orientation of the bright pigment 5 in the coating film, that is, bright pigment 5 is present oriented in various directions. Results rays incident from upper left to reflected by the polarization plane of the bright pigment 5 facing various directions, the reflected light proceeds in various directions. Thus, the surface of the post-coating the metal plate is small flip-flop property.
[0032]
　As shown in Figure 2B, the precoated metal plate according to the prior art, since the thickness of the coating film is relatively small (about 3 ~ 30 [mu] m), glitter 5, in substantially parallel to the film surface with the coating film It is oriented at an angle. Thus, the light incident on the precoated metal plate probability of specular reflection is high, flip-flop property is increased.
[0033]
　As shown in Figure 2C, the precoated metal plate according to the present embodiment, by an appropriate amount mixed fine white pigment 7 in the coating. The white pigment 7, the incident light beam and before reaching the glitter 5, the reflected light rays reflected by the luster pigment 5 is diffused. As a result, despite the high orientation of the brilliant pigment 5, flip-flop property is smaller than that of the conventional precoated metal sheet.
　Incidentally, in FIG. 2C displays the size of the white pigment 7 to expand than actual.
[0034]
　Thus, precoated metal plate according to the present embodiment, by suitable amount of fine white pigment 7 in the coating, it is possible to reduce color tone and luster of the change by line-of-sight direction (flip-flop property).
[0035]
　Hereinafter, a precoated metal plate according to the embodiment will be described with reference to the accompanying drawings.
(Precoated metal sheet 10)
　will be described first precoated metal sheet 10.
　3 and 4 are schematic views showing the structure of a precoated metal sheet 10.
[0036]
　3 and 4, the precoated metal plate 10, the metal plate 1, provided on at least one surface of the metal plate 1, and glitter 5, the average particle size is the 200 ~ 400 nm content 0 It contains a white pigment 7 is .5 to 4.0 wt%, and a coating film 3 is a film thickness of 5 ~ 30 [mu] m. Also, white pigment 7, titanium oxide, zinc oxide is any one or more selected from the group consisting of barium sulfate, basic carbonate and silica.
[0037]
　
　precoated metal plate 10 comprises a metal plate 1 as a substrate. Metal plate 1 is not particularly limited, it may be a known metal sheet may be made of alloy material. Examples of such metal plate 1, steel, stainless steel, aluminum plate, aluminum alloy plate, titanium plate, copper plate, and the like.
　Metal plate 1 is plated on the surface may be subjected. The type of plating, zinc plating, aluminum plating, copper plating, nickel plating, and the like. It may be these alloy plating. For steel sheets, galvanized steel sheets, electrolytic zinc-plated steel sheet, a zinc - nickel alloy plated steel sheet, molten alloyed galvanized steel sheet, aluminum plated steel sheet, aluminum - zinc alloyed coated steel sheet or the like, generally known steel sheet and plated steel sheet it can be used.
[0038]
　
　pre-coated metal sheet 10 is provided on at least one surface of the metal plate 1, and glitter 5, an average particle size of 200 ~ 400 nm content is 0.5-4.0 wt% contains a certain white pigment 7, and a coating film 3 is a film thickness of 5 ~ 30 [mu] m.
　Coating 3, as shown in FIG. 3, it may be provided on one surface of the metal plate 1, as shown in FIG. 4, may be provided on both sides of the metal plate 1.
[0039]
　
　coating 3 has a luster pigment 5. Here, the bright pigment 5 is a general term for the pigment with pearl pigment, glass flake pigment, a glittering feeling such as metallic pigments.
　Specifically, as the pearl pigment, mica, may be a known pearl pigment generally such as synthetic mica, it may be used commercially.
[0040]
　The glass flake pigment is that of the glass powder was flake, may be used as coated with metal or metal oxide on the surface. The glass flake pigments, may be used commercially.
　The metallic pigments, e.g., aluminum, the metal particulate or flaky particles such as silver may be used.
　The bright pigment 5 is preferably metallic pigment capable of obtaining a suitable metallic appearance, especially aluminum flakes are preferred.
[0041]
　However, as the bright pigment 5, pigments carrying scaly aluminum pigments described in Patent Document 4 (metallic pigment chemically adsorb colored pigments of an organic or inorganic to the surface of scaly aluminum pigment), JP 5 the use of metal oxide coated alumina flakes pigments described in micaceous iron oxide powder or Patent Document 6 listed in is not preferable because the appropriate flip-flop property can not be obtained.
　The reason is not clear, when the addition of the pigment described above in the coating film 3, since some interaction between the white pigment 7 to be described later pigments described above work, not suitable flip-flop property can be obtained it is considered to be.
[0042]
　Although the shape of the bright pigment 5 is not particularly limited, in order to suitably reflect the light, it is preferable that the flaky. Here, the flake aspect ratio (average particle diameter D50 (cumulative weight 50% particle diameter) / thickness ratio) refers to generally 5-20.
　Is not particularly limited the size of the bright pigment 5, in order to obtain a suitable flip-flop property, preferably has an average particle diameter (D50 (cumulative weight 50% particle diameter)) is 20 ~ 50 [mu] m, the thickness of 0. and it is preferable that 5 ~ 5.0μm.
[0043]
　
　coating 3 had an average particle size of 200 ~ 400 nm content contains a white pigment 7 is 0.5 to 4.0 mass%.
　Type of white pigment 7, by the particle size and amount, it acts as a white pigment 7 express, fogging and gloss loss in coating 3, or because the color tone becomes a blue-gray tone, white pigments 7 type, it is necessary to appropriately select the particle size and amount.
[0044]
　White pigment 7, titanium oxide, zinc oxide, is at least one selected from the group consisting of barium sulfate, basic carbonate and silica. When the white pigment 7 contained in the coating 3 is in any one or more compounds described above is preferable because the resulting preferred flip-flop property.
[0045]
　The average particle size of the white pigment 7 is 200 ~ 400 nm.
　Average particle size in 200nm or less of the white pigment 7 is not preferable because it is impossible to obtain a sufficient diffuse reflection effects. Further, the average particle size of the white pigment 7 400nm greater, and act as a white pigment is expressed, for example, the color tone becomes blue-gray tone is not preferable because the metallic effect will be lost. The average particle size of the white pigment 7, preferably 250 ~ 350 nm.
[0046]
　Coating 3 contains a white pigment 7 0.5-4.0 wt%.
　When the content of the white pigment 7 is less than 0.5 wt% is not preferable because the appropriate flip-flop property can not be obtained. When the content of the white pigment 7 more than 4 mass%, and transparency of the coating film 3 is decreased, undesirably metallic effect may possibly be lost.
　Coating 3 preferably contains a white pigment 7 1.0-3.0 wt%, and more preferably contains 1.5-2.5% by weight.
[0047]
　The amount of the white pigment 7 of coating 3 by 0.5 to 4.0 mass%, light irradiated surface of the precoated metal sheet 10, suitably reflected. Precoated metal sheet 10 light irradiating is reflected by diffuse reflection and close manner, unlike the so-called irregular reflection, reflects in a manner that raised diffuse reflection the metallic effect other than the specular reflection of the very small amount of white pigment 7.
[0048]
　In the prior art, white if the coating is added to white pigment in the coating to form a can, for example, International in WO 2014/175420, the titanium oxide is a white pigment in the coating 30 to 60 wt% It is added.
　On the other hand, in the present embodiment, a white coating rather than being added white pigment 7 to form a coating film 3 is added to the white pigment 7 in order to have a suitable flip-flop property. Therefore, compared with the prior art, the addition amount of the white pigment 7 to the coating film 3 is significantly less, 0.5 to 4.0 mass%.
[0049]
　A resin which is a main component of the coating film 3 is not particularly limited. Because of the high transparency, the resin of the coating film 3, polyethylene, polyester and acrylic are preferred.
　Like the conventional metallic coating film, in addition to possible incorporation of the colorant (dye) and various additives in the coating 3 may be formed by superimposing a clear coating film (not shown) on the surface. The coloring agent added to the coating film 3 (dye), azo dyes, anthraquinone dyes, indigoid dyes, sulfur dyes, phthalocyanine dyes, diphenylmethane and triphenylmethane dyes, and other nitro dyes, acridine dyes, known ones used .
[0050]
　
　As described above, although the coating film 3 contains a luster pigment 5 and a white pigment 7, in order to achieve a suitable flip-flop property the content of the brilliant pigment 5 in coating 3: the content of the white pigment 7 (unit mass%) a, in the coating film 3 (unit: wt%) when is B, the value of B / a is 0 .03 there is a need - is 0.27. Preferably, the value of B / A is from 0.05 to 0.20, and more preferably from 0.06 to 0.18.
[0051]
　The various additives that can be added to the coating film 3, an antifoaming agent, a leveling agent, etc. additives such as dispersing aids, polyethylene, polypropylene, ester, paraffin, organic wax components such as fluorine-based , inorganic wax components such as molybdenum disulfide, diluents for reducing the viscosity of the coating composition, a solvent, water and the like.
[0052]
(Method for producing precoated metal plate 10)
　Next, a method for manufacturing a precoated metal plate 10.
[0053]
　Precoated metal sheet 10 using a general continuous coating line or coating line for switching plate, select the appropriate necessary processing, can be prepared by carrying out the selected action. The typical production process of a coating line, washing, drying, chemical conversion, drying, coating, drying and baking, cooling, takes place in the order of drying. However, the manufacturing process of the precoated metal sheet 10 in the present embodiment is not limited thereto.
[0054]
　When forming a clear coating film (not shown) on the surface of the coating film 3 is coated after drying and baking and curing the coating film 3, the paint (hereinafter, referred referred to as "clear coating") for clearcoat film it may be dried and baked cured. Alternatively, a clear coating with paint for the paint film after coating by wet-on-wet or multilayer simultaneous coating method, a two-layer laminated may be simultaneously dried and bake hardening. According to the wet-on-wet or multilayer simultaneous coating method, because the manufacturing process is further omitted, it is more preferable.
[0055]
　Note that when the metal plate 1 was zinc-plated steel sheet is continuously electroplated steel sheet facility or in a continuous hot-dip galvanized steel sheet facility, in line with a wet-on-wet coating facility or simultaneous multilayer coating facility after the plating process by manufacturing Te, the oxide film of the plated metal surfaces can be coated before being formed, it is possible to prevent appearance failure by the oxide film.
[0056]
　Here, the multi-layer simultaneous coating, the slot die coater or slide hopper type apparatus capable of discharging to stack different paint from parallel two or more slits such as a curtain coater, a plurality of coating solution applied to a substrate in a stacked state at the same time, it is the laminated coating liquid method simultaneously drying and baking the.
[0057]
　The wet-on-wet coating, after coating the coating liquid on a time base, this wet state before the coating solution dries, further applying another coating liquid thereon, the coating liquid of the laminated multi-layer the at the same time drying and baking process for. Specifically, as a method for wet-on-wet coating, for example, roll coating, dip coating, curtain flow coating, painting methods such as a roller curtain coating, after coating the coating layer 1 layer, drying the coating layer before baking, further thereon, curtain flow coating, roller curtain coating, slide hopper type curtain coating, after it painted in the second layer in a manner that can be painted substrate and a non-contact such as a slot die coating, such stacked method of simultaneously dried baked multilayer coating film in the wet state and the like.
[0058]
　In the present embodiment, a multilayer simultaneous coating, or, as a method for simultaneously drying and baking and curing the wet-on-wet painted coating, generally baking furnace known coatings, for example, hot air drying oven, direct-type heating furnace, induction heating oven, infrared oven, or may be using a heating furnace or the like in combination of these.
[0059]
　Thus, by simultaneously applying and laminating a coating solution of undried, conventionally, from doing collectively drying process which has been performed for each layer, it is advantageous in terms of productivity and production cost, in addition, there is also an advantage that requires less drying equipment.
Example
[0060]
　
　using a polyester as the resin for forming a coating film. The composition of the coating film is varied as described in Table create a paint base, to obtain a sample to form a coating film having a film thickness described in Table on galvanized steel. For each sample, the flip-flop property of the ([Delta] L), metallic appearance and appearance were evaluated by the following methods.
[0061]
　
　flip-flop of each sample was measured as follows. First, by using the X-RITE Co. bending color difference meter MA-68II, and L15 is L value of 15 °, it was measured L110 and a L value at 110 °. Next, L15-L110 = △ calculates the ΔL of the formula of L, and the ΔL as an index of the flip-flop property.
[0062]
　Flip-flop property was evaluated by the value of ΔL as follows.
　VeryGood: [Delta] L ≦
　60 Good: 60 <[Delta] L ≦
　65 Fair: 65 <[Delta] L ≦
　70 Bad: 70 <[Delta] L
　in 4 out above, was passed VeryGood, Good, what was evaluated as Fair.
[0063]
　
　metallic feeling was evaluated in the following manner.
　Evaluators 8 persons skilled in the evaluation of metallic effect of the pre-coated metal plate, the metallic effect of the pre-coated metal plate under natural daylight, was evaluated according to the following three stages.
　3 points: there is a feeling of metallic
　two points: metallic feeling low
　one point: metallic effect is not
　by the total score by eight, metallic feeling was evaluated in the following four stages.
　Very Good: 20 points or more 24 points or less
　Good: 16 points or more but less than 20 points
　Fair: less than 12 or more points 16 points
　Bad: 8 points less than 12 points or more
　in 4 out above, VeryGood, Good, those evaluated as Fair It was used as a pass.
[0064]
　
　appearance was evaluated in the following manner.
　Evaluation one person skilled in the evaluation of the appearance of the pre-coated metal plate, was observed the appearance of the pre-coated metal plate in natural daylight.
　Appearance, was evaluated in the next two stages.
　Good: When no defects are observed
　Bad: When 1mmφ more defects were observed
　in 2 out above, it was evaluated as acceptable ones were evaluated as Good.
[0065]
　Conditions and evaluation results of Examples and Comparative Examples are shown in Tables 1-5.
[0066]
[Table 1]

[0067]
[Table 2]

[0068]
[table 3]

[0069]
[Table 4]

[0070]
[table 5]

[0071]
　As shown in Table 1-3, in the embodiment satisfies the conditions of the present invention, the flip-flop property, all the evaluation of metallic feeling and appearance was suitable.
　On the other hand, as shown in Table 4 and 5, in the comparative example does not satisfy the conditions of the present invention, the flip-flop property, one of the evaluation of metallic feeling or appearance was unsuitable.
[0072]
　
　Next, without changing the conditions relating luster pigments and white pigments, with different kinds of resins in the coating film, as well as flip-flop property as in Example 1 was examined for metallic effect and appearance.
　The evaluation results are shown in Table 6.
[0073]
[Table 6]

[0074]
　As shown in Table 6, it was possible to obtain a suitable evaluation results in the case of using any resin.
　Incidentally, aluminum in Tables 1 to 6 are used as bright pigment refers to aluminum flakes.
Industrial Applicability
[0075]
　According to the above embodiment, it is possible to provide a small precoated metal sheet change in color tone and luster by line-of-sight direction.
DESCRIPTION OF SYMBOLS
[0076]
　1 metal plate
　3 coating
　5 luster pigments
　7 white pigment
　10 pre-coated metal sheet

The scope of the claims
[Requested item 1]
　Metal plate and;
　provided on at least one surface of the metal plate, and luster pigment, the average particle size of 200 ~ 400 nm content containing a white pigment is 0.5 to 4.0 mass%, a coating film thickness of 5 ~ 30 [mu] m;
comprising a
　said white pigment is titanium oxide, zinc oxide, is at least one selected from the group consisting of barium sulfate, basic carbonate and silica,
　the coating film and a mass percent content of the brilliant pigment in, when the B content of the white pigment in weight percent, the value of B / a is 0.03 to 0.27
that pre-coated metal plate which is characterized.
[Requested item 2]
　Wherein said average particle size of the white pigment is 250 ~ 350 nm
, characterized in that, precoated metal plate according to claim 1.
[Requested item 3]
　The luster pigment is an aluminum flake
and wherein the precoated metal sheet according to claim 1 or 2.
[Requested item 4]
　The value of the B / A is at 0.05-0.20
, characterized in that, precoated metal sheet according to any one of claims 1-3.
[Requested item 5]
　Light is incident at an incident angle of 45 ° to the surface, the angle of specular reflection light is emitted of the light is 0 °, when the incident position of the light was set to 90 °, was measured using a variable angle colorimeter and L15 is a lightness in 15 °, the difference in a L15-L110 and L110 is a lightness in 110 °, it is 70 or less
, wherein the precoat according to any one of claims 1 to 4, metal plate.
[Requested item 6]
　Wherein the surface of the coating film further comprises a clear paint film
, characterized in that, precoated metal sheet according to any one of claims 1 to 5.