JP5900216B2 - panel - Google Patents

Description

  The present invention relates to a panel formed of a specific metal plate, which is formed as a whole plate and has a plurality of convex portions protruding to at least one surface side.

  Conventionally, a lightweight high-rigidity panel in which unevenness is provided in a staggered pattern has been proposed as an interior panel used for transportation machines such as railway vehicles, automobiles, airplanes, and ships, or building structures (for example, Patent Document 1). See). The panel described in Patent Document 1 has a shape in which unevenness is formed side by side in two vertical and horizontal directions of a flat panel, and a flat portion other than the unevenness is not linearly formed. Moreover, also in the heat insulator utilized for heat insulation, such as a catalytic converter and a muffler of an automobile, a configuration in which convex portions are arranged in two directions in the panel surface has been proposed (see, for example, Patent Document 2). These panels have unevenness or protrusions arranged side by side in two directions in the panel surface, so that they are compared with flat plates with no unevenness or corrugated sheets with unevenness only in one direction. Even with the same thickness, the rigidity is high.

Japanese Patent No. 2960402 JP 2008-180125 A

  By the way, in the conventional panel, the unevenness is provided in a staggered pattern so that the flat portion is not formed linearly, but the flat portion is continuously formed surrounding these unevenness. As a result, the continuous flat portion affects the bending rigidity and torsional rigidity of the entire panel, and there has been a problem that the panel cannot be sufficiently increased in rigidity and weight.

  Moreover, the conventional panel is a panel invented only for the purpose of achieving high rigidity and light weight by giving specific irregularities, and the corrosion resistance and scratch resistance required when using the panel, No consideration is given to contamination resistance. The concavo-convex shape of the panel is given by processing by pressing, roll rolling, etc., but at that time, the overhang and the bent part are generated on the entire surface of the panel, so the corrosion resistance is higher than that of the flat panel without such a processed part. It will decline. Further, the convex shape is easily scratched during handling. Furthermore, when dirt such as fingerprints adheres, it is difficult to clean and clean due to the uneven shape, which is also disadvantageous from the viewpoint of stain resistance. Therefore, it has been difficult to secure the required performance such as corrosion resistance, scratch resistance, and contamination resistance in the conventional panel having the uneven shape.

  Therefore, the present invention made in view of the above problems provides a panel that has a simple structure, can reliably achieve high rigidity and light weight, and is excellent in corrosion resistance, scratch resistance, and contamination resistance. For the purpose.

In order to solve the above problems, according to the present invention, an organosilicon compound (A) having an alkylene group, a siloxane bond and a crosslinkable functional group represented by the following general formula [X] on at least one surface of a metal plate is provided. A panel formed from a coated metal plate coated with a coating film (α) as a film-forming component, and a plurality of protrusions protruding from a predetermined reference surface, and a plurality of protrusions that are flush with the reference surface Among the flat portion and the plurality of concave portions recessed from the reference surface, the convex portion and any one of the flat portion and the concave portion are provided, and the plurality of convex portions, the plurality of flat portions, and the plurality of the concave portions are provided. When the concave portion has a quadrangular shape and includes the flat portion, the entire periphery of each of the convex portions is surrounded by the flat portion, and the entire periphery of each of the flat portions is surrounded by the convex portions, When the concave portion is provided, each of the convex portions And the convex portion side inclined surface provided at the peripheral portion of the convex portion, and the peripheral portion of the concave portion. An inclined surface portion formed by a concave-side inclined surface provided on the surface, and provided between the respective corner portions of the convex portions adjacent to each other at an intersection of the inclined surface portion connecting the concave portion and the convex portion. Panels are provided that are connected via a bridge having a circular arc portion.

-SiR ¹ R ² R ³ ... [X]

(In the formula, R ¹ , R ² and R ³ each independently represent an alkoxy group or a hydroxy group. (Including the case where any one of R ¹ , R ² and R ³ is substituted with a methyl group) .))

Further, in the panel, the amount deposited of the coating film (alpha) is preferably not 0.2 g / ^{m 2} or more 2.0 g / ^{m 2} or less.

  In the panel, the coating film (α) preferably further contains an organic resin (B) as a film-forming component.

  Moreover, in the said panel, it is preferable that solid content mass ratio [(A) / (B)] of the said organosilicon compound (A) and the said organic resin (B) is 0.3-3.

  In the panel, the organosilicon compound (A) is preferably a hydrolysis condensate of a silane coupling agent.

  In the panel, the organosilicon compound (A) is preferably obtained by a reaction between a silane coupling agent (Aa) having an amino group and a silane coupling agent (Ae) having an epoxy group. .

  In the panel, the coating film (α) preferably further contains a lubricant (C).

  In the panel, the lubricant (C) is preferably polyolefin resin particles (C1).

  Moreover, the said panel WHEREIN: It is preferable that the said coating film ((alpha)) contains a phosphoric acid compound (D) further.

  In the panel, the coating film (α) preferably further contains at least one selected from the group consisting of a vanadium compound (E) and a fluorometal complex compound (F).

  Moreover, it is preferable that the said coating film ((alpha)) contains the polymer (G) containing the polymer unit based on the (meth) acrylate which has a perfluoroalkyl group further in the said panel.

  In the panel, the metal plate is preferably a zinc-based plated steel plate or an aluminum-based plated steel plate.

Further, in the panel, the bridge has a top flat part, the area S1 of the flat top surface part of the convex part, the area S2 of the flat bottom surface part of the concave part, the area S3 of the top flat part, and the From the convex side inclined surface that is a side surface of the convex portion, the concave side inclined surface that is the side surface of the concave portion, and a corner inclined surface that extends from the four corners of the convex portion and the concave portion toward the reference plane. It is preferable that the area S4 of the inclined portion satisfies the following formula 1.

(S3 + S4) / (S1 + S2) ≦ 1.0 (Formula 1)

In the panel, when the convex side inclined surface and the concave side inclined surface are viewed in a cross section perpendicular to the reference surface, the convex side inclined surface and the concave side inclined surface are linearly continuous. It is preferable that the inclination angle of the convex- side inclined surface with respect to the reference surface and the inclination angle of the concave-side inclined surface with respect to the reference surface are the same.

  According to the present invention, the shape of the panel is a shape in which the convex portion and any one of the flat portion and the concave portion are not continuously formed in a planar manner. It is possible to provide a panel that can be reliably realized. Furthermore, according to the present invention, it is possible to provide a panel having excellent corrosion resistance, scratch resistance, and contamination resistance by specifying a material for forming the panel.

It is a perspective view which shows the structural example of the panel which concerns on 1st Embodiment of this invention. It is a perspective view which shows the structural example of the panel which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the structural example of the panel which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the structural example of the panel which concerns on 4th Embodiment of this invention. It is a perspective view which shows the structural example of the panel which concerns on 5th Embodiment of this invention. It is sectional drawing of the panel which concerns on the said 1st Embodiment. It is sectional drawing of the panel which concerns on the said 2nd Embodiment. It is sectional drawing of the panel which concerns on the said 3rd Embodiment. It is sectional drawing of the panel which concerns on the said 4th Embodiment. It is sectional drawing of the panel which concerns on the said 5th Embodiment. It is a perspective view which shows the structural example of the conventional panel. It is a perspective view which shows the structural example of the conventional panel. It is a perspective view which shows the structural example of the conventional panel. It is a perspective view which shows the structural example of the other conventional panel. It is a perspective view which shows the method of the FEM analysis which concerns on the example of implementation shape of this invention. It is a perspective view which shows the method of the FEM analysis which concerns on the example of implementation shape of this invention. It is the analysis model figure seen from the front of the comparative shape example 1 (No. 1) in the said implementation shape example. It is the analysis model figure seen from the cross section of the comparative shape example 1 (No. 1) in the said implementation shape example. It is the analysis model figure seen from the front of the comparative shape example 2 (No. 2) in the said implementation shape example. It is the analysis model figure seen from the cross section of the comparative shape example 2 (No. 2) in the said implementation shape example. It is the analysis model figure seen from the front of the comparative shape example 3 (No. 3) in the said implementation shape example. It is the analysis model figure seen from the cross section of the comparative shape example 3 (No. 3) in the said implementation shape example. It is the analysis model figure seen from the front of the comparative shape example 4 (No. 4) in the said implementation shape example. It is the analysis model figure seen from the cross section of the comparative shape example 4 (No. 4) in the said implementation shape example. It is the analysis model figure seen from the front of the example 1 (No. 5) of the example shape in the said example shape. It is the analysis model figure seen from the cross section of the implementation shape example 1 (No. 5) in the said implementation shape example. It is the analysis model figure seen from the front of the example 2 of implementation shape in the said example of implementation shape (No. 6). It is the analysis model figure seen from the cross section of the implementation shape example 2 (No. 6) in the said implementation shape example. It is an analysis model figure seen from the front of example shape 3 (No. 7) in the example shape. It is the analysis model figure seen from the cross section of the implementation shape example 3 (No. 7) in the said implementation shape example. It is the analysis model figure seen from the front of the example 4 (No. 8) of the example shape in the said example shape. It is the analysis model figure seen from the cross section of the implementation shape example 4 (No. 8) in the said implementation shape example. It is the analysis model figure seen from the front of the example 5 of an implementation shape in the said example of implementation shape (No. 9). It is the analysis model figure seen from the cross section of the implementation shape example 5 (No. 9) in the said implementation shape example. It is a graph which shows the rigidity ratio in the bending model of the said implementation shape example. It is a graph which shows the rigidity ratio in the twist model of the said example of an implementation shape. It is a perspective view which shows the panel which concerns on the modification of this invention. It is sectional drawing which shows the panel which concerns on the modification of this invention. It is a perspective view which shows the panel which concerns on another modification. It is an expansion perspective view which shows the panel which concerns on another modification. It is a graph which shows the rigidity ratio (bending) at the time of changing the diagonal side length of a top flat part in another modification. It is a graph which shows the rigidity ratio (twist) at the time of changing the diagonal side length of a top flat part in another modification. It is a graph which shows the rigidity ratio (bending) at the time of changing the diagonal side length of a top flat part. It is a graph which shows the rigidity ratio (twist) at the time of changing the diagonal side length of a top flat part. It is a graph which shows the rigidity ratio (bending) at the time of changing the diagonal side length of a top flat part. It is a graph which shows the rigidity ratio (twist) at the time of changing the diagonal side length of a top flat part. It is a perspective view which shows the circular arc part which connects a convex part and a recessed part. It is a graph which shows the rigidity ratio (bending) at the time of changing the magnitude | size of a circular arc part. It is a graph which shows the rigidity ratio (twist) at the time of changing the magnitude | size of a circular arc part. It is a perspective view which shows the shape and dimension of the panel which evaluated rigidity in the Example. It is the perspective view which expanded a part of panel of FIG. It is a graph which shows the rigidity ratio (bending) at the time of changing the distance of the square pyramid top surface of a convex part, and the square pyramid top surface of a recessed part. It is a graph which shows the rigidity ratio (twist) at the time of changing the distance of the square pyramid top surface of a convex part, and the square pyramid top surface of a recessed part.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

The outline of the description of the preferred embodiment of the present invention is as follows.
1. Panel configuration 1.1. Configuration of painted metal plate 1.1.1. Composition of coating film (α) 1.1.2. Types of metal plates 1.2. Panel shape 1.2.1. First embodiment 1.2.2. Second Embodiment 1.2.3. Third Embodiment 1.2.4. Fourth embodiment 1.2.5. Fifth embodiment2. Panel manufacturing method 2.1. Manufacturing method of coated metal plate 2.1.1. Method for forming coating film (α) 2.2. 2. Panel forming method Summary

(1. Panel configuration)
First, the configuration of the panel according to a preferred embodiment of the present invention will be described. The panel according to each embodiment of the present invention is a panel formed from a painted metal plate in which a coating film (α) containing an organosilicon compound (A) as a film-forming component is coated on at least one surface of the metal plate. And has a specific shape to be described later. Hereinafter, after describing the configuration of the painted metal plate according to each embodiment of the present invention, the shape of the panel according to each embodiment of the present invention formed using the painted metal plate will be described.

(1.1. Configuration of painted metal plate)
The coated metal plate according to each embodiment of the present invention has an alkylene group, a siloxane bond and a formula —SiR ¹ R ² R ³ (wherein R ¹ , R ² and R ³ are independent of each other) on at least one side of the metal plate. Represents an alkoxy group or a hydroxy group, and any one of R ¹ , R ² and R ³ may be substituted with a methyl group)) Is coated with a coating film (α) having an essential film-forming component.

(1.1.1. Composition of coating film (α))
First, the configuration of the coating film (α) will be described.

<About the amount of coating (α) attached>
The adhesion amount of the coating film (α) is not particularly limited, but is preferably 0.2 g / m ² or more and 2.0 g / m ² or less, more preferably 0.3 g / m ² or more and 1.5 g / m. ² or less, more preferably 0.3 g / m ² or more and 1.0 g / m ² or less. When the adhesion amount of the coating film (α) is less than 0.2 g / m ² , sufficient corrosion resistance, scratch resistance, and stain resistance may not be obtained. On the other hand, if the adhesion amount of the coating film (α) is more than 2.0 g / m ² , it is not only economically disadvantageous, but also the coating film (α) has insufficient cohesive force and becomes brittle, with corrosion resistance and scratch resistance. And contamination resistance may be reduced.

  The adhesion amount of the coating film (α) is the mass difference before and after coating, the mass difference before and after peeling the coating film after coating, or the X-ray fluorescence analysis of the coating film to know the content in the coating film in advance. What is necessary is just to select from existing methods appropriately, such as measuring the abundance of the element which exists.

<About the organosilicon compound (A)>
The organosilicon compound (A) that is a film-forming component of the coating film (α) is not particularly limited as long as it contains an alkylene group, a siloxane bond, and a crosslinkable functional group represented by the following general formula [X]. However, it is preferable that it contains an alkylene group, a siloxane bond, and a crosslinkable functional group represented by the following general formula [X], and can stably exist in an aqueous medium containing water as a main component. . Furthermore, as the organosilicon compound (A), at least one crosslinkable functional group selected from an amino group, an epoxy group, and a hydroxy group (separate from those that can be included in the general formula [X]) is used. It is preferable to contain it in order to form a dense film having a higher crosslink density and to enhance the corrosion resistance, scratch resistance and stain resistance of the panel. In addition, since these crosslinkable functional groups exhibit hydrophilicity, when the coating composition for forming the coating film (α) is a water-based coating, at least one selected from an amino group, an epoxy group, and a hydroxy group It is advantageous to increase the stability of the organosilicon compound (A) in an aqueous solvent to contain a crosslinkable functional group. The stability in an aqueous solvent in the present specification indicates that it is difficult for aggregates and precipitates to be generated in an aqueous solvent over time, and that thickening and gelation are less likely to occur.

-SiR ¹ R ² R ³ ... [X]

(In the formula, R ¹ , R ² and R ³ independently represent an alkoxy group or a hydroxy group, and any one of R ¹ , R ² and R ³ may be substituted with a methyl group.)

  Examples of such an organosilicon compound (A) include hydrolysis condensates of silane coupling agents. Specific examples of the silane coupling agent include vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, and 3-glycidoxypropylmethyldimethoxy. Silane, 3-glycidoxypropylmethyldiethoxysilane, 2- (3,4 epoxycyclohexyl) ethyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyl Methyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N-2 (amino Til) 3-aminopropyltrimethoxysilane, N-2 (aminoethyl) 3-aminopropyltriethoxysilane, N-2 (aminoethyl) 3-aminopropylmethyldimethoxysilane, bis (trimethoxysilylpropyl) amine, 3 -Triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, N-phenyl-3-aminopropyltrimethoxysilane, 3-ureidopropyltriethoxysilane, 3-mercaptopropylmethyldimethoxysilane, 3-mercapto Examples thereof include propyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-isocyanatopropyltriethoxysilane, bis (trimethoxysilyl) hexane, and the like. The said silane coupling agent may be used independently and may use 2 or more types together.

  The organosilicon compound (A) is particularly preferably obtained by a reaction between a silane coupling agent (Aa) containing an amino group and a silane coupling agent (Ae) containing an epoxy group. Due to the reaction between the amino group and the epoxy group, and the reaction between the alkoxysilyl group contained in each of the silane coupling agent (Aa) and the silane coupling agent (Ae) or their partial hydrolysis products, It becomes possible to form a highly dense film, which can further improve the corrosion resistance, scratch resistance and stain resistance of the panel. As the silane coupling agent (Aa) containing an amino group, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, N-2 ( Aminoethyl) 3-aminopropyltriethoxysilane, N-2 (aminoethyl) 3-aminopropylmethyldimethoxysilane, bis (trimethoxysilylpropyl) amine can be exemplified, and a silane coupling agent containing an epoxy group (Ae) Examples thereof include 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, and 3-glycidoxypropylmethyldiethoxysilane.

  The molar ratio [(Aa) / (Ae)] of the silane coupling agent (Aa) containing an amino group and the silane coupling agent (Ae) containing an epoxy group is 0.5 or more and 2.5 or less. Is more preferable, and is 0.7 or more and 1.6 or less. If the molar ratio [(Aa) / (Ae)] is less than 0.5, the film-forming property is lowered and the corrosion resistance may be lowered. If it is more than 2.5, the water resistance is lowered and the corrosion resistance is lowered. May decrease.

  The number average molecular weight of the organosilicon compound (A) is preferably 1000 or more and 10,000 or less, more preferably 2000 or more and 10,000 or less. Although the measuring method of molecular weight here is not specifically limited, Any of the direct measurement by TOF-MS method and the conversion measurement by the chromatography method may be used. When the number average molecular weight is less than 1000, the water resistance of the formed film is lowered, and the alkali resistance and corrosion resistance may be lowered. On the other hand, when the number average molecular weight is larger than 10,000, it is difficult to stably dissolve or disperse the organosilicon compound (A) in an aqueous medium containing water as a main component, and storage stability may be lowered.

  The method for producing the organosilicon compound (A) is not particularly limited, but for example, a silane coupling agent is dissolved or dispersed in water and stirred for a predetermined time at a predetermined temperature to obtain an aqueous solution of a hydrolysis condensate. Method, a method of obtaining an aqueous liquid by dissolving or dispersing an organosilicon compound such as a silane coupling agent hydrolysis condensate in water, an organosilicon compound such as a silane coupling agent hydrolysis condensate such as methanol, ethanol, isopropanol, etc. Examples thereof include a method of obtaining an alcoholic liquid by dissolving in an alcoholic organic solvent. In order to dissolve or disperse the silane coupling agent and its hydrolysis condensate in an aqueous medium, an acid, an alkali, an organic solvent, a surfactant and the like may be added as appropriate, and in particular, an organic acid is added to adjust the pH. Is preferably 3 to 6 from the viewpoint of storage stability. It is preferable that the solid content concentration of the aqueous liquid or alcohol-based liquid of the organosilicon compound (A) is 25% by mass or less. When the solid content concentration of the organosilicon compound (A) exceeds 25% by mass, the storage stability of the aqueous liquid or alcohol liquid may be lowered.

<About organic resin (B)>
It is preferable to further contain an organic resin (B) as a film-forming component of the coating film (α). By containing the organic resin (B), the ability to follow the coating (α) to deformation (elongation or compression) of the metal plate that occurs when processing the metal plate into a panel is improved, and a press die or metal rolling The frictional resistance received when contacting the roll is reduced (slidability is improved). That is, in the processed part of the panel, the coating film (α) can be more uniformly coated on the metal plate without being damaged such as cracks and scratches, and the corrosion resistance of the panel, Improves contamination resistance. In addition, when the coating film (α) contains a corrosion inhibitor such as a phosphoric acid compound, vanadium compound, or fluoro metal complex compound described later, the retention of the coating film (α) of these corrosion inhibitors is increased. Corrosion resistance is improved. Since the excellent slidability of the coating film (α) as described above is maintained even after the panel molding, the scratch resistance of the obtained panel is also improved.

  As an organic resin (B), it is not limited to a specific kind, For example, a polyester resin, a polyurethane resin, an epoxy resin, a phenol resin, an acrylic resin, polyolefin resin, or the modified body of these resins etc. can be mentioned. As such an organic resin (B), one or two or more organic resins (unmodified) may be mixed and used, or at least 1 in the presence of at least one organic resin. One or more organic resins obtained by modifying other organic resins may be used.

  It does not specifically limit as said polyester resin, For example, what was obtained by polycondensing the polyester raw material which consists of a polycarboxylic acid component and a polyol component can be used. In addition, it is also possible to use those obtained by dissolving or dispersing the polyester resin thus obtained in water.

  Examples of the polycarboxylic acid component include phthalic acid, phthalic anhydride, tetrahydrophthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic acid, hexahydrophthalic anhydride, methyltetraphthalic acid, methyltetrahydrophthalic anhydride, and hymic anhydride. , Trimellitic acid, trimellitic anhydride, pyromellitic acid, pyromellitic anhydride, isophthalic acid, terephthalic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, adipic acid, azelaic acid, sebacic acid, succinic acid, Examples thereof include succinic anhydride, lactic acid, dodecenyl succinic acid, dodecenyl succinic anhydride, cyclohexane-1,4-dicarboxylic acid, and anhydrous endo acid. As such a polycarboxylic acid component, one of the above components may be used, or a plurality of the above components may be used.

  Examples of the polyol component include ethylene glycol, diethylene glycol, 1,3-propanediol, 1,2-propanediol, triethylene glycol, 2-methyl-1,3-propanediol, 2,2-dimethyl-1, 3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-butanediol, 2-methyl-1,4-butanediol, 2-methyl-3-methyl-1,4- Butanediol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,2-cyclohexanedim Methanol, hydrogenated bisphenol-A, dimer diol, trimethylol ethane, trimethylo Trimethylolpropane, glycerin, and pentaerythritol and the like. As such a polyol component, one of the above components may be used, or a plurality of the above components may be used.

  The polyurethane resin is not particularly limited, and examples thereof include those obtained by reacting a polyol compound and a polyisocyanate compound and then further chain-extending with a chain extender. The polyol compound is not particularly limited as long as it is a compound containing two or more hydroxyl groups per molecule. For example, ethylene glycol, propylene glycol, diethylene glycol, 1,6-hexanediol, neopentyl glycol, triethylene Examples include glycols, glycerin, trimethylolethane, trimethylolpropane, polycarbonate polyols, polyester polyols, polyether polyols such as bisphenol hydroxypropyl ether, polyester amide polyols, acrylic polyols, polyurethane polyols, or mixtures thereof. The polyisocyanate compound is not particularly limited as long as it is a compound containing two or more isocyanate groups per molecule, and examples thereof include aliphatic isocyanates such as hexamethylene diisocyanate (HDI) and fats such as isophorone diisocyanate (IPDI). An aromatic diisocyanate such as cyclic diisocyanate, tolylene diisocyanate (TDI), an araliphatic diisocyanate such as diphenylmethane diisocyanate (MDI), or a mixture thereof. The chain extender is not particularly limited as long as it is a compound containing one or more active hydrogens in the molecule. For example, ethylenediamine, propylenediamine, hexamethylenediamine, diethylenetriamine, dipropylenetriamine, triethylenetetramine, tetra Aliphatic polyamines such as ethylenepentamine, aromatic polyamines such as tolylenediamine, xylylenediamine, diaminodiphenylmethane, alicyclic polyamines such as diaminocyclohexylmethane, piperazine, 2,5-dimethylpiperazine, isophoronediamine, Hydrazines such as hydrazine, succinic dihydrazide, adipic dihydrazide, phthalic dihydrazide, hydroxyethyldiethylenetriamine, 2-[(2-aminoethyl) amino] ethanol, 3-amino Alkanolamines such as propanediol and the like. These compounds can be used alone or in admixture of two or more.

  The epoxy resin is not particularly limited. For example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, hydrogenated bisphenol A type epoxy resin, hydrogenated bisphenol F type epoxy resin, resorcin type epoxy resin, novolac type epoxy resin. An epoxy resin such as can be used. In addition, as the epoxy resin, those epoxy resins that are forcibly emulsified with a surfactant to be water-based, or these epoxy resins are reacted with an amine compound such as diethanolamine, N-methylethanolamine, an organic acid or Uses water neutralized with inorganic acids, or water-based by radical polymerization of high acid value acrylic resins in the presence of these epoxy resins and then neutralized with ammonia or amine compounds. can do.

  The phenol resin is not particularly limited. For example, a methylolated phenol resin obtained by addition reaction of an aromatic compound such as phenol, resorcin, cresol, bisphenol A, paraxylylene dimethyl ether and formaldehyde in the presence of a reaction catalyst. The phenolic resin can be used. Moreover, as said phenol resin, it can react with amine compounds, such as diethanolamine and N-methylethanolamine, and can also use what was neutralized with the organic acid or the inorganic acid, and was water-based.

  The acrylic resin is not particularly limited, and examples thereof include alkyl (meth) acrylates such as ethyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and n-butyl (meth) acrylate, and 2-hydroxyethyl (meth). What is obtained by radical polymerization of (meth) acrylic acid esters such as hydroxyalkyl (meth) acrylates such as acrylates and alkoxysilane (meth) acrylates in water together with (meth) acrylic acid using a polymerization initiator in water. Can be mentioned. The polymerization initiator is not particularly limited, and for example, persulfates such as potassium persulfate and ammonium persulfate, and azo compounds such as azobiscyanovaleric acid and azobisisobutyronitrile can be used. Here, “(meth) acrylate” means acrylate and methacrylate, and “(meth) acrylic acid” means acrylic acid and methacrylic acid.

  The polyolefin resin is not particularly limited. For example, after radical polymerization of ethylene and unsaturated carboxylic acids such as methacrylic acid, acrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid and the like at high temperature and high pressure, ammonia And basic metal compounds such as KOH, NaOH and LiOH, or those neutralized with ammonia or amine compounds containing the metal compound and converted to water.

  When the coating composition for forming the coating film (α) uses an aqueous liquid of an organic silicon compound (A) that is an essential component of the coating film (α) as a raw material, the organic resin (B) is cationic. In order to obtain the storage stability of the coating composition, at least one selected from polyurethane resins, epoxy resins, and phenol resins is preferred. Here, the cationic organic resin refers to an organic resin having at least one cationic functional group selected from primary to tertiary amino groups and quaternary ammonium bases, in an aqueous solvent. Those dissolved or dispersed in can be suitably used. Dissolution or dispersion of the cationic organic resin in the aqueous solvent may be achieved based on self-solubility or self-dispersibility, or a cationic surfactant (for example, a tetraalkylammonium salt) and / or the like. You may disperse | distribute by presence of nonionic surfactant (for example, alkylphenyl ether etc.). From the viewpoint of corrosion resistance and scratch resistance of the panel, it is more preferable to use a cationic polyurethane resin capable of designing a higher polymer.

  The solid content mass ratio [(A) / (B)] between the organosilicon compound (A) and the organic resin (B) is preferably 0.3 or more and 3 or less. When the solid content mass ratio [(A) / (B)] is less than 0.3, the effect of improving the corrosion resistance cannot be obtained, or the storage stability of the coating composition for forming the coating film (α) is high. It may decrease. On the other hand, if the solid content mass ratio [(A) / (B)] is more than 3, the effect of improving the corrosion resistance and scratch resistance may not be obtained.

<About lubricant (C)>
The coating film (α) preferably further contains a lubricant (C) in order to improve corrosion resistance and scratch resistance. By containing the lubricant (C), the lubricity of the coated metal plate is increased. In other words, the effect of reducing the frictional resistance received when contacting with a press die or a metal rolling roll is increased, and panel processing is performed. The coating film (α) can be prevented from being damaged at the part.

  The lubricant (C) is not particularly limited, and a known lubricant can be used, but it is preferable to use at least one selected from a fluororesin-based lubricant and a polyolefin resin-based lubricant.

  The fluororesin-based lubricant is not particularly limited. For example, polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer ( PFA), polychlorotrifluoroethylene (PCTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer (ECTFE) Etc. These fluororesin-based lubricants may be used alone or in combination of two or more.

  The polyolefin resin-based lubricant is not particularly limited, and examples thereof include hydrocarbon waxes such as paraffin, microcrystalline, polyethylene, and polypropylene, and derivatives thereof. Further, the hydrocarbon wax derivative is not particularly limited, and examples thereof include carboxylated polyolefin and chlorinated polyolefin. These polyolefin-based lubricants may be used alone or in combination of two or more.

  Among the above lubricants, it is particularly preferable to use the polyolefin resin particles (C1) as the lubricant (C) in order to improve the corrosion resistance and scratch resistance. When the polyolefin resin particles (C1) are used, the average particle diameter is preferably 0.1 μm or more and 3 μm or less from the viewpoint of corrosion resistance and scratch resistance.

  The content of the lubricant (C) is preferably 0.5% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 5% by mass or less in the coating film (α). If the content of the lubricant (C) is less than 0.5% by mass, the effect of improving the corrosion resistance and scratch resistance may not be obtained, and if it exceeds 10% by mass, the corrosion resistance may be lowered. .

<About the phosphoric acid compound (D)>
The coating film (α) preferably further contains a phosphoric acid compound (D) in order to improve the corrosion resistance. When the phosphoric acid compound (D) is contained, the corrosion resistance of the panel can be improved by forming a phosphate layer on the surface of the metal plate and passivating it.

  The phosphoric acid compound (D) is not particularly limited, but examples thereof include phosphoric acids such as orthophosphoric acid, metaphosphoric acid, pyrophosphoric acid, triphosphoric acid, tetraphosphoric acid, and salts thereof, aminotri (methylenephosphonic acid), 1 -Phosphonic acids such as hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid) and their salts, organic phosphoric acids such as phytic acid and their salts, etc. be able to. The cation species of the salt is not particularly limited, and examples thereof include Cu, Co, Fe, Mn, Sn, V, Mg, Ba, Al, Ca, Sr, Nb, Y, Ni, and Zn. These phosphoric acid compounds (D) may be used independently and may use 2 or more types together.

  It is preferable that content of a phosphoric acid compound (D) is 0.1 to 10 mass% in a coating film ((alpha)), More preferably, it is 0.5 to 5 mass%. When the content of the phosphoric acid compound (D) is less than 0.1% by mass, the effect of improving the corrosion resistance may not be obtained, and when it exceeds 5% by mass, the corrosion resistance is reduced or a coating film is formed. In some cases, the stability of the coating material may decrease (more specifically, problems such as gelation and precipitation of aggregates may occur).

<Vanadium compound (E) and fluoro metal complex compound (F)>
The coating film (α) preferably further contains at least one selected from a vanadium compound (E) and a fluorometal complex compound (F) in the presence of the phosphoric acid compound (D). The vanadium compound (E) and the fluorometal complex compound (F) may be used alone, but in the presence of the phosphoric acid compound (D), the corrosion resistance is dramatically improved by their combined effect. In addition, in the coating film (α), the simultaneous use of all of the phosphate compound (D), the vanadium compound (E), and the fluorometal complex compound (F) improves the corrosion resistance most.

  The vanadium compound (E) is not particularly limited. For example, vanadium pentoxide, metavanadate, ammonium metavanadate, sodium metavanadate, vanadium oxytrichloride, vanadium trioxide, vanadium dioxide, vanadium oxysulfate, Vanadium oxyacetylacetonate, vanadium acetylacetonate, vanadium trichloride, phosphovanadomolybdic acid, or the like can be used. The vanadium compound (E) is a pentavalent vanadium compound selected from the group consisting of a hydroxyl group, a carbonyl group, a carboxyl group, a primary to tertiary amino group, an amide group, a phosphoric acid group, and a phosphonic acid group. Those reduced to tetravalent to divalent by an organic compound having a functional group of can be used. These vanadium compounds (E) may be used independently and may use 2 or more types together.

  Although it does not specifically limit as said fluoro metal complex compound (F), It is preferable from a corrosion-resistant viewpoint to use the fluoro metal complex compound which has at least 1 sort (s) chosen from titanium and zirconium. Examples of the fluorometal complex compound include titanium hydrofluoric acid, zircon hydrofluoric acid, and ammonium salts and alkali metal salts thereof.

<About polymer (G)>
It is preferable that the said coating film ((alpha)) contains the polymer (G) containing the polymer unit based on the (meth) acrylate which further has a perfluoroalkyl group. A perfluoroalkyl group has an effect of increasing resistance to contamination, and a polymer containing a polymer unit based on (meth) acrylate has an effect of improving the retention of the polymer (G) in the coating film (α). doing. That is, by containing the polymer (G) containing a polymer unit based on a (meth) acrylate having a perfluoroalkyl group, high and durable stain resistance can be imparted.

The (meth) acrylate containing a perfluoroalkyl group is more preferably a structure represented by the following general formula [Y].

^{_{CH 2 = C (R 4)}} COO (CH 2) n R 5 ··· [Y]

(In the formula [Y], R ⁴ represents H or CH ₃ , R ⁵ represents a perfluoroalkyl group, and n represents an integer of 0 to ^4. )

  The structure represented by the general formula [Y] is particularly effective in preferentially orienting perfluoroalkyl groups on the surface of the coating film (α) and is a film forming component of the coating film (α). Since the affinity with the organosilicon compound (A) is also high, the retention of the polymer (G) in the coating film (α) is also increased. That is, by using the polymer (G), it is possible to obtain a high level of stain resistance and a durable stain-resistant coating film that does not deteriorate the stain resistance over a long period of time.

Examples of the (meth) acrylate containing a perfluoroalkyl group having a structure represented by the general formula [Y] include CH ₂ ═CHCOOC ₂ H ₄ C ₄ F ₉ , CH ₂ ═C (CH ₃ ) COOC. _{2 H 4 C 4 F 9,} CH 2 = CHCOOC 2 H 4 C 6 F 13, CH 2 = C (CH 3) COOC 2 H 4 C 6 F 13, CH 2 = C (CH 3) COOC 3 H 6 C _{6 F 13, CH 2 = CHCOOC} 2 H 4 C 8 F 17, CH 2 = C (CH 3) COOC 2 H 4 C 8 F 17, CH 2 = C (CH 3) COOC 8 F 17 and the like. _{Preferably, CH 2 = CHCOOC 2 H 4} C 4 F 9, CH 2 = C (CH 3) COOC 2 H 4 C 4 F 9, CH 2 = CHCOOC 2 H 4 C 6 F 13, CH 2 = C (CH _{3) COOC 2 H 4 C 6} F 13, CH 2 = C (CH 3) COOC is ₃ H ₆ C ₆ F _13. These (meth) acrylates may be used alone or in combination of two or more.

  Moreover, it is preferable that the said polymer (G) contains 60 mass%-98 mass% of polymer units based on the (meth) acrylate containing a perfluoroalkyl group. If the polymerized unit is less than 60% by mass, the effect of improving stain resistance may not be obtained. On the other hand, when the polymerized unit is more than 98% by mass, the film retention of the polymer (G) is lowered, the effect of improving the stain resistance is not obtained, or the stability in the aqueous solvent is lowered. There is also a case.

<About colored pigments>
The coating film (α) preferably further contains a color pigment in order to improve the design of the panel. The type of the color pigment is not particularly limited, and examples thereof include colored inorganic pigments such as titanium dioxide, carbon black, graphite, iron oxide, lead oxide, coal dust, talc, cadmium yellow, cadmium red, and chrome yellow, and phthalocyanine. Blue, phthalocyanine green, quinacridone, perylene, anthrapyrimidine, carbazole violet, anthrapyridine, azo orange, flavanthrone yellow, isoindoline yellow, azo yellow, indanthrone blue, dibromoanthanthrone red, perylene red, azo red, anthraquinone red, etc. Colored organic pigments, aluminum powder, alumina powder, bronze powder, copper powder, tin powder, zinc powder, iron phosphide, metal-coated mica powder, titanium dioxide-coated mica powder, two Titanium coated glass powder, and the like bright materials, such as titanium dioxide coated alumina powder.

  When the coating film (α) is colored in a deep color or when the coating film (α) has a film thickness of 10 μm or less and has excellent design properties, carbon black is contained as a coloring pigment. It is preferable to do. The type of carbon black is not particularly limited, and known carbon blacks such as furnace black, ketjen black, acetylene black, and channel black can be used. Further, carbon black subjected to known ozone treatment, plasma treatment, or liquid phase oxidation treatment can also be used. The particle size of the carbon black used for the color pigment is not particularly limited as long as there is no problem in dispersibility, coating quality, and paintability in the coating composition for forming the coating film (α). In this case, those having a primary particle diameter of 10 nm to 120 nm can be used. Considering the design properties and corrosion resistance of the thin film, it is preferable to use fine particle carbon black having a primary particle diameter of 10 nm to 50 nm as the color pigment. When these carbon blacks are dispersed in an aqueous solvent, agglomeration occurs in the dispersion process, so that it is generally difficult to disperse with the primary particle size. That is, in practice, the fine particle carbon black is present in the form of secondary particles having a particle size larger than the primary particle size in the coating composition (coating solution) for forming the coating film (α). It exists in the same form also in the coating film ((alpha)) formed using this coating composition. In order to ensure designability and corrosion resistance in the thin film, the particle size of carbon black dispersed in the coating film (α) is important, and the average particle size is controlled to be 20 nm to 300 nm. It is preferable to do.

  When the content of the carbon black in the coating film (α) is d [mass%] and the thickness of the coating film (α) is b [μm], d ≦ 15, b ≦ 10, d × b ≧ 20. It is preferable to satisfy. In order to ensure designability (concealment), it is important to secure a certain amount or more of the absolute amount of carbon black contained in the coating film (α). The absolute amount of carbon black can be represented by the product of the carbon black content (d [mass%]) contained in the coating film and the coating thickness (b [μm]). That is, if d × b is less than 20, designability (concealment) may be deteriorated. On the other hand, if d is more than 15, the film-forming property of the coating film is lowered, and the corrosion resistance and scratch resistance may be lowered.

  When the paint film (α) is lightly colored, it is preferable to contain titanium dioxide as a coloring pigment. In this case, the content of titanium dioxide in the coating film (α) is preferably 10% by mass or more and 70% by mass or less. When the content of titanium dioxide is less than 10% by mass, the designability (hiding property) may be deteriorated, and when it is more than 70% by mass, corrosion resistance, scratch resistance and stain resistance may be deteriorated. In general, when the coating film (α) contains carbon black and is colored deeply, when it is scratched than when it is not colored or lightly colored It has the feature of being easily noticeable. Titanium dioxide has the effect of raising the scratch resistance, and also has the effect of making the appearance close to light and making the scratches less noticeable. Therefore, in order to improve the scratch resistance while ensuring the design (concealment) and corrosion resistance at the time of coloring with a thin film having a film thickness (α) of 10 μm or less, carbon in the coating film (α) It is preferable to contain both black and titanium dioxide. In this case, it is preferable to contain carbon black and titanium dioxide at a mass ratio of 0.5 / 9.5 to 3/7.

<Regarding the particulate component in the coating film (α)>
In the said coating film ((alpha)), at least 1 sort (s) of polyolefin resin particle (C1) and a color pigment may exist as a particulate component as needed.

  Generally, it may be difficult to specify the shape and size of particles contained in a thin coating film. Nonetheless, the particulate components contained in the coating composition used to form the coating film may undergo some physical or chemical change during the coating film formation process (for example, bonding or aggregation between particles, or coating solvent). As long as it does not suffer from significant dissolution of the resin, reaction with other components, etc., it can be considered that it retains its shape and size even when it is present in the paint even after the coating is formed. . The polyolefin resin particles (C1) and the color pigments, which are particulate components used in the present invention, do not significantly dissolve in the solvent of the coating composition used for forming the coating film (α), and the solvent and other coating composition It is chosen not to react with the ingredients. In addition, for the purpose of enhancing the retention of the existence form of these particulate components in the coating material, a coating material obtained by dispersing the particulate component in a solvent with a known surfactant or a dispersing resin as necessary is used. It can also be used as a raw material for the composition. Therefore, the particle size of these particulate components contained in the coating film defined in the present invention can be expressed by their particle size in the coating composition used for forming the coating film (α). it can.

  Specifically, the particle diameters of the polyolefin resin particles (C1), which are particulate components used in the present invention, and the color pigment can be measured by a dynamic light scattering method (nanotrack method). According to the dynamic scattering method, the diameter of fine particles in a dispersion medium having a known temperature, viscosity, and refractive index can be easily obtained. The particulate component used in the present invention is selected so that it does not significantly dissolve in the solvent of the paint and does not react with the solvent or other coating components, so measure the particle size in a predetermined dispersion medium, It can be employed as the particle size of the particulate component in the paint. In the dynamic light scattering method, laser light is irradiated to fine particles that are dispersed in a dispersion medium and moving in brown, the scattered light from the particles is observed, the autocorrelation function is obtained by the photon correlation method, and the cumulant method is used. Measure the particle size. As a particle size measuring device by the dynamic light scattering method, for example, FPAR-1000 manufactured by Otsuka Electronics Co., Ltd. can be used. In the present invention, a dispersion sample containing the particles to be measured is measured at 25 ° C. to determine the cumulant average particle size, and the average value of five measurements in total is taken as the average particle size of the particles. The measurement of the average particle size by the dynamic light scattering method is described in detail, for example, in Journal of Chemical Physics (Vol. 57, No. 11 (December, 1972), page 4814. .

  In addition, when at least one of the polyolefin resin particles (C1) and the color pigment is present as a particulate component in the coating film (α), the coating film (α) is observed from the cross section, and its shape and particles are directly observed. It is also possible to measure the diameter. The method for observing the cross section of the coating film (α) is not particularly limited, but after embedding a coated metal plate perpendicular to the thickness direction of the coating film in a room temperature drying type epoxy resin and mechanically polishing the embedded surface, SEM (scanning) Using an electron microscope) or a FIB (focused ion beam) device, cut out a sample for observation with a thickness of 50 nm to 100 nm so that the vertical cross section of the coating film can be seen from the painted metal plate, A method of observing with a TEM (transmission electron microscope) can be suitably used.

(1.1.2. Types of metal plates)
In the painted metal plate according to each embodiment of the present invention, the type of the metal plate applicable to the substrate is not particularly limited, for example, iron, iron-based alloy, aluminum, aluminum-based alloy, copper, A copper base alloy etc. are mentioned, The plating metal plate arbitrarily plated on the metal plate can also be used. Among these metal plates, the most suitable for application to each embodiment of the present invention is a zinc-based plated steel plate or an aluminum-based plated steel plate.

  In the galvanized steel sheet in each embodiment of the present invention, for example, galvanized steel sheet, zinc-nickel plated steel sheet, zinc-iron plated steel sheet, zinc-chromium plated steel sheet, zinc-aluminum plated steel sheet, zinc-titanium plated steel sheet, Zinc-magnesium-plated steel sheets, zinc-manganese-plated steel sheets, zinc-aluminum-magnesium-plated steel sheets, zinc-plated steel sheets such as zinc-aluminum-magnesium-silicon-plated steel sheets, and a small amount of different metal elements in these plating layers Or impurities containing cobalt, molybdenum, tungsten, nickel, titanium, chromium, aluminum, manganese, iron, magnesium, lead, bismuth, antimony, tin, copper, cadmium, arsenic, silica, alumina, titania, etc. Includes inorganic dispersions .

  The aluminum-based plated steel sheet in each embodiment of the present invention includes, for example, an aluminum-plated steel sheet, or an alloy composed of aluminum and at least one of silicon, zinc, and magnesium, such as an aluminum-silicon plated steel sheet. , Aluminum-galvanized steel sheet, aluminum-silicon-magnesium plated steel sheet and the like.

  Furthermore, as a base metal plate in each embodiment of the present invention, a multilayer formed by combining the above-described plating and other types of plating, for example, iron plating, iron-phosphorus plating, nickel plating, cobalt plating and the like. A plated steel sheet on which plating has been applied is also applicable. The plating method is not particularly limited, and any known method such as an electroplating method, a hot dipping method, a vapor deposition plating method, a dispersion plating method, or a vacuum plating method may be used.

(1.2. Panel shape)
In the above, the structure of the coating metal plate used as the raw material for forming the panel which concerns on each embodiment of this invention was demonstrated in detail. Then, the shape of the panel which concerns on each embodiment of this invention formed using the coating metal plate mentioned above is demonstrated.

  The panel according to each embodiment of the present invention is a specific metal plate coated with a coating film (α) having an organic silicon compound (A) as a film-forming component on at least one surface of the metal plate as described above. Formed by processing into a shape. Hereinafter, the shape of a panel according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

  1 to 6E, panels 1 (1A to 1E) according to the embodiments of the present invention include a housing for home appliances, a wall for a cargo container, a structure for construction and interior / exterior materials, an automobile and a railway. It is used for a vehicle body, a chassis, each part of a vehicle, an aircraft, a ship, etc., a can as a container, etc., and is formed in a whole plate shape along a predetermined reference surface F such as a flat surface or a curved surface. This panel 1 is formed from a coated metal plate in which at least one surface of the above-described metal plate is coated with a coating film (α) containing an organosilicon compound (A) as a film-forming component. The panel 1 has a flat portion 2 along the reference plane F, and a bent portion (frame portion) 3 bent at a substantially right angle from the outer edge of the flat portion 2. Here, in each embodiment of this invention, although the panel 1 is provided with the bending part 3, it does not necessarily need to be provided. However, when the panel 1 includes the bent portion 3, it is possible to obtain an effect of suppressing local deformation of the edge portion of the panel 1.

(1.2.1 First Embodiment)
The panel 1A of the first embodiment shown in FIG. 1 and FIG. 6A includes a plurality of convex portions 4A protruding from the reference surface F and a plurality of flat portions 5A that are flush with the reference surface F.

  The plurality of convex portions 4A protrude from the reference plane F to one side (perpendicular to the reference plane F: above the drawing sheet). Further, the plurality of flat portions 5 </ b> A are configured by the flat portion 2 that remains without protruding from the reference surface F. A plurality of convex portions 4 </ b> A and a plurality of flat portions 5 </ b> A are arranged side by side along the plane portion 2.

  The convex portion 4A has a substantially regular hexagonal upper surface portion 41A when viewed from the front (when viewed from the protruding direction), and an inclined surface portion extending from each side of the upper surface portion 41A toward the flat surface portion 2 (reference surface F). (Inclined surface) 42A and a regular hexagonal frustum. The flat part 5A is formed in a substantially equilateral triangular shape by the lower end edge of the inclined surface part 42A of the three convex parts 4A. That is, the entire periphery of each of the convex portions 4A is surrounded by the flat portion 5A, and the entire periphery of each of the flat portions 5A is surrounded by the convex portions 4A. Specifically, three sides that are all around the flat portion 5A are surrounded by three convex portions 4A, and six sides that are all around the convex portion 4A are surrounded by six flat portions 5A. Therefore, the convex portions 4A and the flat portions 5A are arranged so that the adjacent flat portions 5A are not continuous with each other and the adjacent convex portions 4A are not continuous with each other.

  With the above configuration, the panel 1A of the present embodiment has a configuration in which the convex portion 4A and the flat portion 5A are not continuously formed in a plane. Thereby, the solid effect of the thickness direction of the board of panel 1A is acquired, and the bending rigidity and torsional rigidity of panel 1A can be improved. Therefore, the rigidity can be remarkably increased and the weight can be reduced by reducing the thickness.

(1.2.2. Second Embodiment)
The panel 1B of the second embodiment shown in FIGS. 2 and 6B includes a plurality of convex portions 4B protruding from the reference surface F and a concave portion 6B recessed from the reference surface F.

  The plurality of convex portions 4B protrude from the reference surface F to one side (perpendicular to the reference surface F; upper side in the drawing), and the plurality of concave portions 6B are the other side (reference surface) opposite to the one side from the reference surface. It is recessed in the direction perpendicular to the plane F; A plurality of convex portions 4 </ b> B and a plurality of concave portions 6 </ b> B are arranged along the plane portion 2.

  The convex portion 4B is configured by a regular hexagonal frustum having an upper surface portion 41B that is a substantially regular hexagon and an inclined surface portion 42B that is a side surface when viewed from the front (when viewed from the protruding direction). The inclined surface portion 42B is formed on the peripheral portion of the convex portion 4B, extends from each side of the upper surface portion 41B toward the flat surface portion 2 (reference surface F), and is a convex portion-side inclined surface inclined with respect to the flat surface portion 2. is there. When viewed from the front, the recess 6B is configured by a downward regular triangular frustum having a substantially equilateral triangular bottom surface portion 61B and an inclined surface portion 62B which is a side surface. The inclined surface portion 62B is a concave-side inclined surface that is formed at the peripheral portion of the concave portion 6B, extends from each side of the bottom surface portion 61B toward the flat surface portion 2 (reference surface F), and is inclined with respect to the flat surface portion 2. The entire circumference of each convex portion 4B is surrounded by six concave portions 6B. On the other hand, the entire circumference of each recess 6B is surrounded by three protrusions 4B.

  With the above-described configuration, the adjacent convex portions 4B are arranged so as not to be continuous with each other, and the adjacent concave portions 6B are not connected to each other. Further, the inclination angle α1 of the inclined surface portion 42B of the convex portion 4B with respect to the reference surface F and the inclination angle α2 of the inclined surface portion 62B of the concave portion 6B with respect to the reference surface F are the same. Further, when the inclined surface portion 42B and the inclined surface portion 62B are viewed in a cross section perpendicular to the reference surface F, the inclined surface portion 42B and the inclined surface portion 62B are continuously connected linearly. That is, they are formed continuously in the same plane.

  With the configuration described above, the panel 1B of the present embodiment can achieve significantly higher rigidity and can achieve weight reduction due to thinning, as with the panel 1A.

(1.2.3. Third Embodiment)
The panel 1C of the third embodiment shown in FIGS. 3 and 6C includes a plurality of convex portions 4C that protrude from the reference plane F and a plurality of flat portions 5C that are flush with the plane portion 2.

  The plurality of convex portions 4C have a quadrangular shape and protrude from the reference plane F to one side (perpendicular to the reference plane F: above the drawing in the drawing). In addition, the plurality of flat portions 5 </ b> C are configured by the flat portions 2 that remain without protruding. A plurality of convex portions 4 </ b> C and a plurality of flat portions 5 </ b> C are arranged along the plane portion 2.

  When viewed from the front (when viewed from the protruding direction), the convex portion 4C extends from the upper surface portion 41C, which is a substantially square shape (substantially square shape), and the flat surface portion 2 (reference surface F) from each side of the upper surface portion 41C. It is composed of a regular quadrangular frustum having an inclined surface portion (inclined surface) 42C. The entire circumference of each flat portion 5C is surrounded by a plurality of convex portions 4C. Specifically, the flat portion 5C is formed in a square shape by the lower edge of the inclined surface portion 42C of the four convex portions 4C (three at the edge of the panel 1), that is, the entire circumference of each flat portion 5C. The four sides are surrounded by four convex portions 4C. Further, the entire circumference of each of the convex portions 4C is surrounded by the flat portion 5C.

  With such a configuration, the convex portions 4C and the flat portions 5C are arranged so that the adjacent flat portions 5C are not continuous with each other and the adjacent convex portions 4C are not continuous with each other. A plurality of convex portions 4C and a plurality of flat portions 5C are alternately arranged along the reference plane F along the width direction (X direction) and the length direction (Y direction) orthogonal to the width direction. Has been. That is, it is formed in a checkered pattern (checkered pattern).

  With the above configuration, the panel 1C according to the present embodiment can achieve significantly higher rigidity and can achieve weight reduction due to thinning, similarly to the panel 1A.

(1.2.4. Fourth Embodiment)
The panel 1D of the fourth embodiment shown in FIGS. 4 and 6D includes a plurality of convex portions 4D protruding from the reference surface F and a plurality of concave portions 6D recessed from the reference surface F.

  The plurality of convex portions 4D protrudes from the reference plane F to one side (perpendicular to the reference plane F; the upper side of the drawing), and the plurality of concave portions 6D extend from the reference plane F to the other side opposite to the one side ( It is recessed in the direction perpendicular to the reference plane F; A plurality of convex portions 4 </ b> D and a plurality of concave portions 6 </ b> D are arranged along the plane portion 2.

  The convex portion 4D is configured by a regular quadrangular pyramid having an upper surface portion 41D that is a substantially square (substantially square) and an inclined surface portion 42D that is a side surface when viewed from the front (when viewed from the protruding direction). . The inclined surface portion 42D is a convex-side inclined surface that is formed on the peripheral portion of the convex portion, extends from each side of the upper surface portion 41D toward the flat surface portion 2 (reference surface F), and is inclined with respect to the flat surface portion 2. The entire circumference of each convex portion 4D is surrounded by four concave portions 6D. On the other hand, the entire periphery of each recess 6D is surrounded by four protrusions 4B. When viewed from the front (when viewed from the protruding direction), the recess 6D is formed of a downward-facing regular quadrangular frustum having a bottom surface portion 61D that is a substantially square shape (substantially square shape) and an inclined surface portion 62D that is a side surface. Yes. The inclined surface portion 62D is a recessed-side inclined surface that is formed on the peripheral edge portion of the recessed portion 6D, extends from each side of the bottom surface portion 61D toward the flat surface portion 2 (reference surface F), and is inclined with respect to the flat surface portion 2. The entire periphery of each convex portion 4D is surrounded by four concave portions 6D, while the entire periphery of each concave portion 6D is surrounded by four convex portions 4D.

  With the configuration described above, the plurality of convex portions 4D and the plurality of concave portions 6D are alternately arranged along the width direction (X direction) and the length direction (Y direction) orthogonal to the width direction. That is, it is formed in a checkered pattern (checkered pattern). Thereby, it is comprised so that adjacent convex part 4D may not mutually continue, and adjacent recessed part 6D may not mutually continue. Further, the inclination angle α3 of the inclined surface portion 42D of the convex portion 4D with respect to the reference surface F and the inclination angle α4 of the inclined surface portion 62D of the concave portion 6D with respect to the reference surface F are the same. Further, when the inclined surface portion 42D and the inclined surface portion 62D are viewed in a cross section perpendicular to the reference surface F, the inclined surface portion 42D and the inclined surface portion 62D are continuously connected in a straight line. That is, they are formed continuously in the same plane.

  With the above configuration, the panel 1D according to the present embodiment can achieve extremely high rigidity and can achieve weight reduction by thinning, similarly to the panel 1A.

(1.2.5. Fifth embodiment)
A panel 1E of the fifth embodiment shown in FIGS. 5 and 6E includes a plurality of convex portions 4E protruding from the reference surface F and a plurality of concave portions 6E recessed from the reference surface F.

  The plurality of protrusions 4E protrude from the reference surface F to one side (perpendicular to the reference surface F; the upper side of the drawing), and the plurality of recesses 6E extend from the reference surface F to the other side opposite to the one side ( It is recessed in the direction perpendicular to the reference plane F; A plurality of convex portions 4 </ b> E and a plurality of concave portions 6 </ b> E are arranged along the plane portion 2.

  A bridge 51E is formed between the corners of the convex portions 4E adjacent to each other (between the corners of the concave portion 6E). The bridge 51 </ b> E has a flat top portion (top top surface) 5 </ b> E that is flat, and the top flat portion 5 </ b> E is configured by the flat portion 2 that does not protrude and remains without being recessed.

  When viewed from the front (when viewed from the protruding direction), the convex portion 4E is a flat surface from the four corners of the upper surface portion 41E having four corners that are square (quadrangle) chamfered, the inclined surface portion 42E that is a side surface, and the upper surface portion 41E. It is composed of an octagonal frustum having a corner inclined surface 43E extending toward the portion 2 (reference surface F). The inclined surface portion 42E is formed on the peripheral portion of the convex portion 4E, extends from each side of the upper surface portion 41E toward the flat surface portion 2 (reference surface F), and is a convex portion-side inclined surface inclined with respect to the flat surface portion 2. is there.

  When viewed from the front (when viewed from the protruding direction), the recess 6E has a bottom surface portion 61E whose four corners are chamfered, an inclined surface portion 62E that is a side surface, and a flat surface portion 2 (reference surface) from the four corners of the bottom surface portion 61E. It is composed of a downward-facing octagonal truncated pyramid having a corner inclined surface 63E extending to F). The inclined surface portion 62E is a concave-side inclined surface that is formed at the peripheral portion of the recessed portion 6E, extends from each side of the bottom surface portion 61E toward the flat surface portion 2 (reference surface F), and is inclined with respect to the flat surface portion 2.

  The top flat portion 5E has a square shape with a lower end edge of the corner inclined surface 43E and an upper end edge of the corner inclined surface 63E at a corner portion where the two convex portions 4E and the two concave portions 6E located diagonally approach each other. Is formed.

  And in the panel 1E of 5th Embodiment, the perimeter of each convex part 4E is enclosed by the four recessed parts 6E, and the perimeter of each recessed part 6E is enclosed by the four convex parts 4E, and is comprised. Yes. With this configuration, the plurality of convex portions 4E and the plurality of concave portions 6E are alternately arranged along the width direction (X direction) and the length direction (Y direction) orthogonal to the width direction. That is, it is formed in a checkered pattern (checkered pattern). Thereby, panel 1E is comprised so that adjacent convex part 4E may not mutually continue, and adjacent recessed part 6E may not mutually continue. Further, the four sides that are the entire periphery of the top flat portion 5E are surrounded by the two convex portions 4E and the two concave portions 6E, and the adjacent top flat portions 5E (bridges 51E) are not connected to each other. Further, the inclination angle α5 of the inclined surface portion 42E of the convex portion 4E with respect to the reference surface F is the same as the inclination angle α6 of the inclined surface portion 62E of the concave portion 6E with respect to the reference surface F. Further, the inclined surface portion 42E and the inclined surface portion 62E are continuously formed in the same plane.

  In addition, the area of the flat top surface part of the convex part is S1, the area of the flat bottom part of the concave part is S2, the area of the top flat part is S3, the convex part side inclined surface, the concave part side inclined surface, and the corner part It is preferable that (S3 + S4) / (S1 + S2) is 1.0 or less, where S4 is the area of the inclined portion formed from the inclined surface. In this case, the maximum value of the rigidity ratio including the inflection point can be ensured, and excellent panel rigidity can be ensured even if the material characteristics of the panel and the required secondary workability change.

With the above configuration, the panel 1E according to the present embodiment can achieve extremely high rigidity, and can realize light weight by thinning, similarly to the panel 1A.

  Here, a panel 10 (10A, 10B, 10C, 10D) according to a conventional example of the present invention will be described with reference to FIGS. 7A, 7B, 7C, and 8. FIG. In FIG. 7A, the panel 10 </ b> A is formed to have a flat plate-like flat portion 12 and a bent portion 13 that is bent at a substantially right angle from the outer edge of the flat portion 12. In FIG. 7B, the panel 10B has a flat surface portion 12 and a bent portion 13, a plurality of convex portions 14 projecting from the flat surface portion 12 to one side (upward in the drawing), and a convex portion 14 in the flat surface portion 12. The flat portion 15 is not formed. 7C, the panel 10C has a flat surface portion 12, a bent portion 13, a plurality of convex portions 14 and a flat portion 15, and a plurality of concave portions 16 recessed from the flat surface portion 12 to the other side (downward in the drawing). Is formed. In FIG. 8, the panel 10 </ b> D is formed to include a flat surface portion 12 and a bent portion 13, and a plurality of convex portions 14 </ b> D that protrude from the flat surface portion 12 to one side (upward in the drawing). Further, the square pyramids are planar squares, and the sides of adjacent convex portions 14D are arranged in contact with each other.

(2. Panel manufacturing method)
The configuration of the panel according to each embodiment of the present invention has been described in detail above. Subsequently, a method for manufacturing the panel according to each embodiment of the present invention having such a configuration will be described. Hereinafter, after explaining the manufacturing method of the coating metal plate which concerns on each embodiment of this invention, the manufacturing method of the panel which concerns on each embodiment of this invention formed using this coating metal plate is demonstrated.

(2.1. Manufacturing method of painted metal plate)
The coated metal plate which concerns on each embodiment of this invention is manufactured by forming the coating film ((alpha)) mentioned above on the at least single side | surface of the metal plate used as a base material. Below, the detail of the formation method of a coating film ((alpha)) is described.

(2.1.1. Method for Forming Coating Film (α))
Although it does not specifically limit as a formation method of a coating film ((alpha)), For example, the coating composition containing an organosilicon compound (A) in an aqueous solvent or an organic solvent solvent is apply | coated on a metal plate, and it heat-drys. Can be formed. When a coating composition using an aqueous solvent (hereinafter abbreviated as “water-based coating”) is used, a coating composition using an organic solvent-based solvent (hereinafter abbreviated as “organic solvent-based coating”) is used. This eliminates the need to pass an extra line for painting, which can greatly reduce manufacturing costs and significantly reduce emissions of volatile organic compounds (VOC). Therefore, it is preferable to use a water-based paint. In addition, the crosslinkable functional group represented by the formula —SiR ¹ R ² R ³ contained in the organosilicon compound (A) has self-crosslinkability, and the crosslinkable functional groups are tertiary among the crosslinkable functional groups in the film formation stage. Since siloxane bonds can be formed originally, it plays an important role in improving the crosslink density of the film and improving the performance of the film. R ¹ , R ² , R in the crosslinkable functional group No. ³ is considered to preferentially produce hydroxy groups (silanol groups) produced by hydrolysis of alkoxy groups in each aqueous solvent. This is advantageous in increasing the self-crosslinking property of the crosslinkable functional group, and it is preferable to use a water-based paint also in improving the performance of the film. Here, the aqueous solvent means that water is a solvent that is a main component of the solvent. The amount of water in the solvent is preferably 50% by mass or more. Solvents other than water may be organic solvents, but those containing organic solvents as defined in the Occupational Safety and Health Act organic solvent poisoning prevention regulations (Organic solvents listed in Schedule 6-2 of the Ordinance for Enforcement of the Industrial Safety and Health Act) More preferably 5% of the weight). The organic solvent-based solvent means that the organic solvent is a solvent that is a main component of the solvent.

  The coating composition for forming a coating film ((alpha)) is not limited to a specific method, It can obtain by arbitrary methods. As an example, a preferable coating composition will be described as an example. A method of adding a constituent component of the coating film (α) to an aqueous solvent or an organic solvent solvent as a dispersion medium, stirring with a disper, and dissolving or dispersing. Can be mentioned. When the dispersion medium is an aqueous solvent, a known hydrophilic solvent, for example, ethanol, isopropyl alcohol, t-butyl alcohol, propylene glycol, or the like is used as necessary to improve the solubility or dispersibility of each component. Alcohols, cellosolves such as ethylene glycol monobutyl ether and ethylene glycol monoethyl ether, esters such as ethyl acetate and butyl acetate, and ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone may be added.

  The method for applying the coating composition to the metal plate is not particularly limited, and any known method can be used. For example, roll coating, curtain coating, spray coating, bar coating, dipping, electrostatic coating, or the like can be used as a coating method.

  The heat drying method for forming the coating film (α) from the coating composition is not particularly limited and can be performed by any method. For example, the metal plate can be heated in advance before applying the coating composition, the metal plate can be heated after application, or a combination thereof can be used for drying. There is no restriction | limiting in particular also in a heating method, A coating composition can be dried and baked using hot air, induction heating, near infrared rays, a direct fire, etc. individually or in combination. The drying baking temperature is preferably 100 ° C to 250 ° C in terms of ultimate plate temperature, more preferably 120 ° C to 230 ° C, and most preferably 130 ° C to 220 ° C. If the ultimate plate temperature is less than 100 ° C., the coating film is not sufficiently formed, and the corrosion resistance, scratch resistance, and contamination resistance may decrease. If it exceeds 250 ° C., bake hardening will be excessive. Corrosion resistance may decrease. The drying baking time (heating time) is preferably 1 second to 60 seconds, and more preferably 3 seconds to 20 seconds. When the dry baking time is less than 1 second, the coating film is not sufficiently formed, and the corrosion resistance, scratch resistance, and stain resistance may decrease. If it exceeds 60 seconds, the productivity decreases.

(2.2. Panel Forming Method)
Next, the coated metal plate obtained by the above-described method is processed into a specific shape, for example, the shape described in the above-described first to fifth embodiments, to form a panel according to each embodiment of the present invention. Although there is no restriction | limiting in particular about the formation (working) method of a panel at this time, For example, by the method of pressing and forming a coating metal plate with the metal mold | die which has a specific surface shape, and the roll which has a specific surface shape Examples thereof include a method of forming by rolling or transfer, and these methods can also be used in combination.

(3. Summary)
As explained above, according to the panel which concerns on each embodiment of this invention, it is the structure by which the convex part and any one of a flat part or a recessed part are not continuously formed planarly. Thereby, the three-dimensional effect of the thickness direction of the board of a panel is acquired, and the bending rigidity and torsional rigidity of a panel can be improved. Therefore, the rigidity can be remarkably increased and the weight can be reduced by reducing the thickness.

  Further, according to the panel according to each embodiment of the present invention, when the flat portion is provided, the entire periphery of the flat portion is surrounded by a plurality of convex portions, so the flat portion is not continuously formed, In addition, the plurality of convex portions are not continuously formed with each other. Further, in the case where the concave portion is provided, since the entire periphery of the concave portion is surrounded by the plurality of convex portions, the concave portions are not continuously formed, and the plurality of convex portions are not continuously formed. As a result, the convex portion and any one of the flat portion and the concave portion act geometrically with respect to bending and twisting of the entire panel, and the cross-sectional performance is enhanced by the three-dimensional effect. Thereby, bending rigidity and torsional rigidity can be improved. Accordingly, the rigidity of the flat panel or corrugated sheet can be significantly increased as compared with the conventional panel, whereby the overall thickness of the panel can be reduced and the weight can be reduced. The predetermined reference surface may be a flat surface, a cylindrical surface, a spherical surface, or any other three-dimensional curved surface.

Furthermore, the panel according to each embodiment of the present invention includes an alkylene group, a siloxane bond, and a formula —SiR ¹ R ² R ³ (wherein R ¹ , R ^2, and R ³ are independent of each other) on at least one side of the metal plate. An organosilicon compound (A) containing a crosslinkable functional group represented by an alkoxy group or a hydroxy group, and any one of R ¹ , R ² and R ³ may be substituted with a methyl group. A coated metal plate coated with a coating film (α) as a film-forming component is used as a raw material, and the coating metal plate is formed by a forming process. The coating film (α) having the organosilicon compound (A) as a film-forming component is excellent in barrier properties (corrosion resistance) and contamination resistance of corrosion factors (water, oxygen, etc.). Here, the stain resistance refers to a performance that is less noticeable even when oily dirt such as fingerprints adheres and can remove dirt relatively easily. On the other hand, the coating film (α) containing the organosilicon compound (A) as a film-forming component also has a feature that it has an excellent balance between flexibility and hardness. That is, the coating film (α) is excellent in following the deformation (elongation and compression) of the metal plate that occurs when the metal plate is processed into a panel, and the coating film (α) is also in the processed part after the panel molding. It is coated uniformly without being damaged such as cracks and scratches, it can maintain excellent corrosion resistance and stain resistance, and it has moderate hardness, so the resulting panel has excellent scratch resistance It will be.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples.

(1. Examination of panel shape)
First, the result of having examined panel rigidity about the panel 1 of this embodiment and the conventional panel 10 is demonstrated.

  Here, the panels 1A to 1E of the first to fifth embodiments described above are taken as example shapes, the conventional panels 10A to 10D are taken as comparative shape examples, and FEM analysis is performed by modeling each panel to obtain panel rigidity. Calculated. As shown in FIG. 9A, the FEM analysis model includes a bending model that supports the four corners and the centers of the four sides of each panel 1 and 10 and applies a load to the center of the panel, and as shown in FIG. 9B, A twist model that supports the three corners of panels 1 and 10 and applies a load to the other corners was used. Further, in the panels 1 and 10 of each model, the height of the bent portions 3 and 13 is 15 mm, and the end edges 23 are not connected to each other. Moreover, the arrangement | positioning and dimension of the unevenness | corrugation of each model are shown to FIG. 10A-FIG. 18B. The model dimensions are indicated by the center thickness of the panels 1 and 10. The analysis results are shown in FIGS.

〔Analysis model〕
The specifications of the analysis model and the analysis conditions common to the implementation shape example and the comparative shape example are as follows.
・ Panel size: 285mm x 285mm
-Panel thickness: 0.6 mm (panel material is assumed to be steel)
Load position: In the bending model, it is in the range of 20 mm × 20 mm in the center of the panel, and in the twisting model, it is one point of one corner that is not supported (indicated by a white arrow in FIG. 9).
・ Working load: 10N

[Comparison example]
As comparative shape example 1, panel 10A shown in FIG. 7A was used. The shape of this analysis model is shown in FIGS. 10A and 10B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 1.

  As comparative shape example 2, panel 10B shown in FIG. 7B was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 11A and 11B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 2. In the comparative shape example 2, the center interval between the adjacent convex portions 14 is 34.64 mm, and the center point is arranged to be a vertex of an equilateral triangle. The diameter of the top surface of the truncated cone of each convex portion 14 is 24 mm, the diameter of the bottom surface of the truncated cone is 30 mm, the projecting dimension of the convex portion 14 from the plane portion 12 is 3 mm, and the inclination angle of the truncated cone shape of the convex portion 14 is The angle was 45 °.

  As comparative shape example 3, panel 10C shown in FIG. 7C was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 12A and 12B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 3. In this comparative shape example 3, the center interval between the adjacent convex portion 14 and concave portion 16 was set to 34.64 mm, and the center point was arranged to be the apex of an equilateral triangle. The diameter of the top surface of the truncated cone of each convex portion 14 and the concave portion 16 is 27 mm, the diameter of the bottom surface of the truncated cone is 30 mm, the protruding dimension of the convex portion 14 from the flat surface portion 12 and the concave dimension of the concave portion 16 are 1.5 mm, respectively. did. Further, the distance between the tops of the truncated cones of the convex portions 14 and the concave portions 16 was 3 mm, and the inclined angle of the truncated cone shapes of the convex portions 14 and the concave portions 16 was 45 °.

  As comparative shape example 4, panel 10D shown in FIG. 8 was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 13A and 13B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 4. In this comparative shape example 4, the center interval between the adjacent convex portions 14D is 30 mm, that is, the planar dimension of each convex portion 14D is 30 mm × 30 mm, and the protruding dimension of the convex portion 14D from the plane portion 12, that is, the apex of the quadrangular pyramid The height was 3 mm.

(Example shape)
As an implementation shape example 1, a panel 1A shown in FIGS. 1 and 6A was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 14A and 14B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 5. In the panel 1A of Example 1 of the embodiment, the center interval between adjacent convex portions 4A is 34.64 mm, the center point is arranged to be the apex of an equilateral triangle, and the top surface of the hexagonal frustum of each convex portion 4A is arranged. The distance between the opposite sides was 24 mm, the distance between the opposite sides of the hexagonal frustum bottom was 30 mm, and a plane regular triangle surrounded by the bottom of the hexagonal frustum became each flat portion 5A. Furthermore, the protruding dimension of the convex portion 4A from the flat surface portion 2 was 3 mm, and the inclination angle of the inclined surface portion 42A of the convex portion 4A with respect to the reference surface F was 45 °.

  As an implementation shape example 2, a panel 1B shown in FIGS. 2 and 6B was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 15A and 15B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 6. In the panel 1B of this embodiment example 2, the center distance between the adjacent convex portions 4B is 34.64 mm, the center point is arranged to be the apex of an equilateral triangle, and the opposite side of the top surface of the hexagonal frustum of each convex portion 4B The distance between the opposite sides of the bottom face of the hexagonal frustum was 30 mm. Moreover, the triangular frustum used as each recessed part 6B was provided in the area | region enclosed by the hexagonal frustum bottom face. The projecting dimension of the convex part 4B from the flat part 2 was 1.5 mm, and the concave dimension of the concave part 6B from the flat part 2 was 1.5 mm. The distance between the top surface of the hexagonal frustum of the convex portion 4B and the top surface of the triangular pyramid of the concave portion 6B is 3 mm, and the inclination angles of the inclined surface portion 42B of the convex portion 4A and the inclined surface portion 62B of the concave portion 6B with respect to the reference plane F are 45 respectively. °.

  As Example 3 of shape, panel 1C shown in FIG.3 and FIG.6C was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 16A and 16B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 7. In the panel 1C of Example 3 of the embodiment, the center interval between adjacent convex portions 4C is set to 30 mm, that is, the length of each side of the bottom surface of the square pyramid of each convex portion 4C having a square square is set to 30 mm. Each side length of the surface was 24 mm. Furthermore, the protrusion dimension of the convex part 4C from the plane part 2 was 3 mm, and the inclination angle of the inclined surface part 42C of the convex part 4C with respect to the reference plane F was 45 °.

  As Example 4 of shape, panel 1D shown in FIG.4 and FIG.6D was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIGS. 17A and 17B. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 8. In the panel 1D according to the fourth embodiment, the center interval between the adjacent convex portions 4D is set to 30 mm, that is, the length of each side of the bottom surface of the quadrangular pyramid of each planar square convex portion 4D is set to 30 mm. Each side length of the surface was 27 mm, each side length of the bottom surface of the truncated pyramid of the recess 6D was 30 mm, and each side length of the top surface of the quadrangular pyramid was 27 mm. Furthermore, the protruding dimension of the convex part 4D from the flat part 2 was 1.5 mm, and the concave dimension of the concave part 6D from the flat part 2 was 1.5 mm. Further, the distance between the top surface of the quadrangular pyramid of the convex portion 4D and the top surface of the quadrangular pyramid of the concave portion 6D is 3 mm, and the inclination angles of the inclined surface portion 42D of the convex portion 4D and the inclined surface portion 62D of the concave portion 6D with respect to the reference plane F are 45 respectively. °.

  In the present embodiment example 4, the planar shape and the planar dimension of the convex portion 4D and the concave portion 6D are the same. Thereby, it can be made to resist with sufficient balance with respect to both the external force from the side which the panel protrudes, and the external force from the side where the panel is dented. Furthermore, in the fourth embodiment, the protruding dimension of the convex part and the concave dimension of the concave part in the direction perpendicular to the reference plane are the same. In this case as well, it is possible to resist in a well-balanced manner against an external force from either the protruding side of the panel or the recessed side of the panel.

  As the example 5 of the implementation shape, the panel 1E shown in FIGS. 5 and 6E was used. The arrangement and dimensions of the projections and depressions of this analysis model are shown in FIG. In the graphs of the analysis results (FIGS. 19 and 20), No. Indicated as 9. In the panel 1E of the fifth embodiment, the center interval between the adjacent convex portions 4E is set to 30 mm, that is, the length of each side of the bottom surface of the quadrangular frustum of each convex portion 4E having a substantially planar shape is set to 30 mm. The length of each side of the top surface of the square pyramid was 27 mm, the length of each side of the bottom surface of the quadrangular pyramid of the recess 6E was 30 mm, and the length of each side of the top surface of the quadrangular pyramid was 27 mm. Furthermore, the protrusion dimension of the convex part 4E from the plane part 2 was 1.5 mm, and the recess dimension of the concave part 6E from the plane part 2 was 1.5 mm. The distance between the top surface of the quadrangular pyramid of the convex portion 4E and the top surface of the quadrangular pyramid of the concave portion 6E is 3 mm, and the inclination angles of the inclined surface portion 42E of the convex portion 4E and the inclined surface portion 62E of the concave portion 6E with respect to the reference plane F are set. Each was 45 °. Further, in the panel 1E of the embodiment example 5, the bridge 51E is formed between the corners of the convex portions 4E adjacent to each other (between the corners of the concave portion 6E). The bridge 51 </ b> E has a flat top portion (top top surface) 5 </ b> E that is flat, and the top flat portion 5 </ b> E is constituted by the flat portion 2 that does not protrude and remains without being recessed. The dimensions of this bridge are as follows. That is, the chamfer dimension of the convex portion 4E and the concave portion 6E is 1.5 mm, that is, each diagonal side length of each flat top portion 5E of the plane square is 3 mm, and the corner inclined surface 43E and the corner portion with respect to the reference plane F The inclination angle of the inclined surface 63E was 45 °.

  19 and 20 show the FEM analysis results. FIG. 19 is a graph showing the rigidity ratio in the bending model. The vertical displacement at the center of the panel in the panel 10A of the comparative shape example 1 is expressed as the vertical displacement at the center of the panel in the panels 1 and 10 of the respective example shapes and comparative shapes. The divided value is shown. FIG. 20 is a graph showing the rigidity ratio in the torsion model. The vertical displacement of the load position in the panel 10A of the comparative shape example 1 is expressed as the vertical displacement of the load position in the panels 1 and 10 of the respective example shapes and comparative shape examples. The divided value is shown. That is, in FIGS. 19 and 20, the bending rigidity of the panels 1 </ b> A to 1 </ b> E of the embodiment examples 1 to 5 and the panels 10 </ b> B to 10 </ b> D of the examples 2 to 4 of the comparative shape example with respect to the panel 10 </ b> A of the comparative shape example 1 having no unevenness. And the ratio which the torsional rigidity increased is shown. In addition, the vertical axis | shaft of FIG.19 and FIG.20 is a rigidity ratio.

  As shown in FIG. 19, the bending rigidity of the panels 10B to 10D (Nos. 2, 3, and 4) of the comparative shape examples 2 to 4 is 1.90 with respect to the panel 10A (No. 1) of the comparative shape example 1. The bending rigidity of the panels 1A to 1C (Nos. 5 to 7) of the embodiment examples 1 to 3 was increased by 1.95 times to 2.55 times. On the other hand, the bending rigidity of the panels 1D and 1E (Nos. 8 and 9) of the embodiment examples 4 and 5 is 3.59 times and 3.74 times that of the panel 10A of the comparative shape example 1 and close to 4 times. It was increasing. As described above, the panels 1A to 1C of the embodiment examples 1 to 3 to which the shape of the panel according to each embodiment of the present invention is applied are the same as the panels 10B and 10C (comparative shape examples 2 and 3) having conventional unevenness. It was found that the bending rigidity increased more than the degree. Furthermore, in the panels 1D and 1E of the embodiment examples 4 and 5 to which the panel shape of each embodiment of the present invention is applied, the bending rigidity is about 1.6 to 1.9 times that of the conventional panels 10B and 10C. Was found to increase.

  Further, as shown in FIG. 20, the torsional rigidity of the panels 10B to 10D (Nos. 2, 3, and 4) of the comparative shape examples 2 to 4 is 1 with respect to the panel 10A (No. 1) of the comparative shape example 1. The torsional rigidity of the panels 1A to 1C (Nos. 5 to 7) of the embodiment examples 1 to 3 was increased by 1.50 times to 1.51 times. On the other hand, the torsional rigidity of the panels 1D and 1E (Nos. 8 and 9) of the embodiment examples 4 and 5 is 3.24 times and 3.34 times that of the panel 10A of the comparative shape example 1, and more than 3 times. It was increasing. As described above, the panels 1A to 1C of the embodiment examples 1 to 3 to which the shape of the panel according to each embodiment of the present invention is applied are the same as the panels 10B and 10C (comparative shape examples 2 and 3) having conventional unevenness. It was found that the torsional rigidity increased to a certain extent. Furthermore, in the panels 1D and 1E of the embodiment examples 4 and 5 to which the panel shape of each embodiment of the present invention is applied, the torsional rigidity is about 2.1 to 2.2 times that of the conventional panels 10B and 10C. Was found to increase.

  The following knowledge was acquired by the example of the embodiment of the present invention described above. That is, compared with the comparative shape example in which the flat portion 12 and the flat portion 15 are continuous, the flat portions 5A and 5C and the top flat portion 5E are not continuous, and the convex portions 4A to 4E and the concave portions 6B, 6D, and 6E are also the same. In the panels of Examples 1 to 5 which are not continuous with each other, the bending rigidity and the torsional rigidity can be increased. In particular, in the embodiment examples 4 and 5 in which the convex portions 4D and 4E and the concave portions 6D and 6E are arranged side by side in a checkered pattern, the increase rate of the bending rigidity and the torsional rigidity is large, and the rigidity can be significantly increased. .

  In the embodiment example 5, a bridge having a flat top surface is formed between the corners of adjacent convex portions (between the corners of the concave portions), so that when a force is applied to the panel, the bridge is As compared with the case where forces are transmitted through the adjacent convex portions are directly connected to each other, stress concentration can be reduced.

  In addition, each part dimension of the panel 1 shown by each Example of the shape mentioned above is only an illustration, and can be changed suitably according to a use. Therefore, the effects when the dimensions of each part of the panel 1 are further changed from the above-described embodiment example will be described. Here, the dimensions of each part of the panel 1 are defined as symbols shown in FIGS. 21A to 22B are the distance H between the top surface of the truncated pyramid and the top surface of the truncated pyramid, the thickness t, the side length J of the bottom surface of the truncated pyramid of the projecting portion and the recessed portion, and the reference. The inclination angle θ of the convex portion with respect to the surface F and the inclined surface portion of the concave portion, the number m of the irregularities, the panel size L excluding the flat portion around the panel, and the panel size L ′ are represented. Moreover, each part dimension in FIG. 22B represents each side length J of a square frustum bottom face, and the diagonal side length K of a top flat part.

  First, based on the panel shape of Example 5 of the embodiment, each of the bending rigidity and the torsional rigidity when the diagonal side length K of the top flat part is changed using the dimensions of each part of the panel shown in Tables 1 and 2. FIG. 23A and 23B show the rigidity ratio (comparative reference is a panel without unevenness). Here, Tables 1 and 2 show the bending stiffness ratio (Table 1) and the torsional stiffness ratio (Table 2) when the diagonal side length K of the top flat portion is changed. When K / J is in the range of 0 to 0.9, an improvement in bending rigidity and torsional rigidity is observed. In particular, in the range of K / J in the range of 0 to 0.6, the rigidity ratio is significantly more than three times. The rigidity was improved.

  Next, on the basis of the panel shape of the embodiment example 5, the bending rigidity and twist when the diagonal side length K of the top flat part 5E and the inclination angle θ of the inclined surface part 42E (62E) shown in FIG. 22B are changed. Each rigidity ratio (comparative reference is a panel without unevenness) is shown in FIG. 24, FIG. 25, FIG. 26, and FIG. The values of the diagonal side length K of the top flat part 5E were K = 0, 3, 6, 15, 21, 24, 27, respectively. Further, the inclination angle θ of the inclined surface portion 42E (62E) was set to the values shown in Tables 3 to 30.

  FIG. 24 (H = 3, bending) and FIG. 25 (H = 3, twisting) show the rigidity ratio (bending) when the distance H between the top surface of the convex portion and the top surface of the concave portion shown in FIG. ) Is a graph summarizing the measurement results of Table 3 (K = 0) to Table 9 (K = 27) and the measurement results of Table 10 (K = 0) to Table 16 (K = 27) of the stiffness ratio (twist). is there. FIG. 26 (H = 6, bending) and FIG. 27 (H = 6, twisting) are shown in Table 17 (K = 0) of the rigidity ratio (bending) when the protruding dimension (distance) H is 6.0 mm. -It is the graph which put together the measurement result of Table 24 (K = 0)-Table 30 (K = 27) of the measurement result of Table 23 (K = 27) and rigidity ratio (twist). The sum of the area S3 of the top flat portion 5E and the area S4 of the inclined portion (the sum of the inclined surface portion 42E (62E) and the corner inclined surface 43E) is divided by the sum of the area S1 of the upper surface portion 41E and the area S2 of the bottom surface portion 61E. 24 to 27 are graphs in which the abscissa value is the abscissa and the ordinate is the stiffness ratio of bending stiffness and torsion stiffness. Here, the area S1 of the upper surface portion 41E, the area S2 of the bottom surface portion 61E, and the area S3 of the top flat portion 5E are surface areas, and the area S4 of the inclined portion (the sum of the inclined surface portion 42E (62E) and the corner inclined surface 43E). Is a projected area projected on the reference plane F when the inclined surface portion 42E (62E) and the corner inclined surface 43E are projected from the upper surface.

  As can be seen from FIGS. 24 to 27, the rigidity ratio varies depending on the diagonal side length K of the top flat portion 5E and the inclination angle θ of the inclined surface portion 42E (62E). The optimal diagonal side length K and inclination angle θ can be obtained in terms of design, but the characteristics of the material used for the panel, and the secondary processing when forming a panel with protrusions and recesses In order to secure the characteristics, suitable values of K and θ vary. Thus, even when the values of the diagonal side length K and the inclination angle θ change, (top flat area + inclination area) / (top surface area + bottom surface area) (that is, (S3 + S4) / (S1 + S2) If the value of)) is 1.0 or less, the maximum value of the stiffness ratio including the inflection point can be secured. Therefore, excellent panel rigidity can be ensured even if the material characteristics of the panel and the required secondary workability change.

  In the above example, the panel shape of the embodiment shape example 5 was used as a basis. However, the present inventors confirmed that the same effect can be obtained even if the panels of the embodiment shape examples 1 to 4 are used. Yes.

  Next, on the basis of the panel shape of the embodiment example 5, the dimensions of each part of the panel shown in Table 31 and Table 32 are used, and as shown in FIG. 28, an arc part (at the intersection of the inclined surface part connecting the concave part and the convex part) Radius R = r × t) and each stiffness ratio of bending rigidity and torsional rigidity when the ratio r of the radius R of the arc portion to the plate thickness t is changed (as in Comparative Example 1) Comparison criteria are shown in FIGS.

  As can be seen from FIGS. 29 and 30, even when the value of r is changed from 0 to 22, the bending rigidity and the torsional rigidity are improved, and the intersection r is appropriately set according to the material used for the panel. It can be seen that the effect of improving the rigidity can be obtained even if the setting is made. That is, by providing the arc portion instead of providing the flat portion, the same effect as when the flat portion is provided can be obtained. The formation of the arc portion also has an advantage that it is easy to process.

(2. Study on panel performance)
Next, the results of studies on the performance of the panel of the present invention will be described.

(2.1. Evaluation of corrosion resistance, scratch resistance, and contamination resistance)
First, the results of evaluating the corrosion resistance, scratch resistance and stain resistance of the panel of the example of the present invention will be described. In this evaluation, the panel formed using the various coating metal plates produced as mentioned later was made into object.

(2.1.1. Metal plate)
Table 33 shows the types of metal plates used in this evaluation. A mild steel plate having a thickness of 0.4 mm was used as the base material of the plated metal plate. For SUS plate, ferritic stainless steel plate (steel component: C: 0.008 mass%, Si: 0.07 mass%, Mn: 0.15 mass%, P: 0.011 mass%, S: 0.009 mass) %, Al: 0.067% by mass, Cr: 17.3% by mass, Mo: 1.51% by mass, N: 0.0051% by mass, Ti: 0.22% by mass, balance Fe and inevitable impurities). used. The metal plate was used after alkali degreasing treatment, washing with water and drying.

(2.1.2. Paint film and painted metal plate)
The coating composition for forming the coating film shows the organosilicon compound (A) shown in Table 34, the organic resin (B) shown in Table 35, the lubricant (C) shown in Table 36, and Table 37. A phosphoric acid compound (D), a vanadium compound (E) shown in Table 38, a fluoro complex compound (F) shown in Table 39, and a perfluoroalkyl group shown in Table 40 and the following Production Examples 1 and 2 (meta ) A polymer (G) containing polymer units based on acrylate was blended in the blending amount (mass% of solid content) shown in Table 41, and the mixture was stirred by using a paint disperser. The coating composition is applied to the surface of the metal plate prepared in (2.1.1) with a roll coater so as to have a predetermined adhesion amount, and is dried by heating to a predetermined ultimate plate temperature. A coated metal plate was obtained by forming a film. Table 41 also shows the coating film composition of the coated metal plate, the amount of coating film deposited, and the ultimate plate temperature.

[Production of polymer (G) containing polymerized units based on (meth) acrylate having a perfluoroalkyl group (Production Example 1)]
Each monomer (C6FMA: 75% by mass, DEAEMA: 15% by mass, MAEO 9: 10% by mass), a polymerization initiator AIP, and an organic solvent MIBK were mixed, purged with nitrogen, and then stirred at 65 ° C. for 16 hours. A polymerization reaction was performed to obtain a polymer solution having a solid concentration of 20% by mass. Water and acetic acid were added to the resulting polymer solution, stirred for 15 minutes, and emulsified and dispersed. Next, after distilling off the organic solvent at 65 ° C. under reduced pressure, water was added so as to have a solid content concentration of 20% by mass, and the polymer containing polymer units based on (meth) acrylate having a perfluoroalkyl group was obtained. An aqueous dispersion was obtained. The above abbreviations have the following meanings.
_{C6FMA: CH 2 = C (CH} 3) COOC 2 H 4 C 6 F 13
DEAEMA: N, N-diethylaminoethyl methacrylate _{MAEO9: CH 2 = C (CH} 3) COO (C 2 H 4 O) n CH 3 ( average of n is 9)
AIP: 2,2′-azobis [2- (2-imidazolin-2-yl) propane]
MIBK: Methyl isobutyl ketone

[Production of polymer (G) containing polymerized units based on (meth) acrylate having a perfluoroalkyl group (Production Example 2)]
Each monomer (C6FMA: 76 mass%, 135 DP: 6 mass%, StA: 10 mass%, VCM: 8 mass%), emulsifier (polyoxyethylene oleyl ether, polyoxyethylene-polyoxypropylene-polyoxyethylene block) Copolymer, stearyltrimethylammonium chloride), dipropylene glycol, and normal dodecyl mercaptan were mixed in water and stirred at 50 ° C. for 30 minutes to obtain a mixed solution. The obtained mixed liquid was stirred at a high pressure at 40 MPa while maintaining at 50 ° C. to obtain an emulsion. The obtained emulsion was cooled to 30 ° C. or lower, purged with nitrogen, added with a polymerization initiator 2, 2′-azobis [2- (2-imidazolin-2-yl) propane] and acetic acid, and stirred. A polymerization reaction was carried out at 55 ° C. for 12 hours to obtain an aqueous dispersion of a polymer containing polymerized units based on (meth) acrylate having a perfluoroalkyl group having a solid concentration of 20% by mass. The above abbreviations have the following meanings.
_{C6FMA: CH 2 = C (CH} 3) COOC 2 H 4 C 6 F 13
135DP: 3,5-dimethylpyrazole adduct of 2-isocyanatoethyl methacrylate StA: stearyl acrylate VCM: vinyl chloride

(2.1.3. Panel)
The coated metal plate produced in the above (2.1.2) was processed into the shape of the embodiment shape example 4 out of the panels having the shapes of the embodiment shape examples 1 to 5, thereby creating a panel. Here, in the same manner as in the fourth embodiment, the panel size L is set to 204 mm for the panel shown in FIGS. 31 and 32 in which a curved bridge is formed between the corners of each convex portion of the planar square. Thickness t is 0.4 mm, each side length J of the bottom of the truncated pyramid of the convex part and the concave part is 6 mm, the radius R of the arc part of the inclined surface part connecting the concave part and the convex part is 0.4 mm, and the convex part The distance H between the top surface of the quadrangular pyramid and the top surface of the quadrangular pyramid of the recess is 0.4 mm, 0.8 mm, 1.2 mm, 2.0 mm, and the inclination angle θ of the convex portion with respect to the reference plane F and the inclined surface portion of the concave portion Panels for Example Panel A, Example Panel B, Example Panel C, and Example Panel D formed by using the above-described coated metal plates, which were changed to 15 °, 28 °, 39 °, and 53 °. Were evaluated for corrosion resistance, scratch resistance, and stain resistance.

(2.1.4. Evaluation test)
A test piece of 70 mm × 150 mm size was cut out from each panel obtained in the above (2.1.3), and corrosion resistance, scratch resistance, and contamination resistance were evaluated by the evaluation methods and evaluation criteria shown below. The evaluation results are shown in Table 42.

[Corrosion resistance]
After the end face of the test piece (cut out from the panel) is tape-sealed, a salt spray test (SST) based on JIS Z 2371 (2000) is performed for 24 hours and 72 hours, and rust is generated at each test time. The situation was observed and evaluated according to the following evaluation criteria.
5: Rust generation area is less than 1%.
4: Rust generation area is 1% or more and less than 5%.
3: Rust generation area is 5% or more and less than 10%.
2: Rust generation area is 10% or more and less than 30%.
1: The rust generation area is 30% or more.

[Scratch resistance]
After the test piece (cut out from the panel) is set on a rubbing tester, a 30 mm × 30 mm cardboard paper is attached to the sliding jig tip of the rubbing tester so as to be parallel to the test piece, and the cardboard paper is 9.8 N. The coating state after rubbing 5 times and 10 times with a load of (1.0 kgf) was evaluated according to the following evaluation criteria.
5: No trace is observed on the rubbing surface.
4: Slightly scratched scratches on the rubbing surface (a level at which sliding scratches can be discriminated with some attention).
3: Slightly scratched scratches on the rubbing surface (a level at which sliding scratches can be easily discerned with close eyes).
2: A clear flaw is attached to the rubbing surface (a level at which the flaw can be identified instantaneously).
1: The film on the rubbing surface falls off and the underlying metal plate is exposed.

[Contamination resistance]
Fingerprints were attached by pressing a finger against the test piece (cut out from the panel), allowed to stand at room temperature for 1 hour, then wiped off with absorbent cotton, and the traces of the fingerprint were evaluated according to the following evaluation criteria.
5: No fingerprint trace.
4: Fingerprint traces remain very slightly (at a level at which the fingerprint traces can be discriminated with some attention).
3: Slight fingerprint traces remain (a level at which fingerprint traces can be easily discerned with close eyes).
2: Fingerprint traces remain (the fingerprint traces can be discriminated instantly, but there is no clear change in the portion and color tone where there are no fingerprint traces).
1: Fingerprint traces remain clearly (the fingerprint traces can be discriminated instantaneously, and there is a clear change in the part and color tone where there are no fingerprint traces).

  As shown in Table 42, the panels of the examples of the present invention exhibited excellent corrosion resistance, scratch resistance and stain resistance of 3 or more in any evaluation test. On the other hand, all of the comparative examples using various metal plates not coated with the coating film were inferior in corrosion resistance, scratch resistance, and contamination resistance (excluding the corrosion resistance of the SUS plate).

(2.2. Evaluation of rigidity)
Subsequently, as an example of the present invention, panel rigidity was evaluated for the panels A, B, C, and D of Examples 1, 7, 12, and 98 produced in (2.1.4).

  Bending rigidity evaluation results are shown in Table 43 and FIG. 33, and torsional rigidity evaluation results are shown in Table 44 and FIG. As can be seen from Table 43 and Table 44, FIG. 33 and FIG. 34, the effect of improving the rigidity with respect to the flat plate changes depending on the setting of the distance H, and the example panels A to D have a bending rigidity of 1.4 times or more. The effect of improving rigidity by 3.0 times and torsional rigidity by 1.7 times to 19 times was obtained.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention belongs can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, in the above-described embodiment, the case where the reference surface F of the panel 1 is a flat surface has been described. However, the reference surface F is not limited to a flat surface, but may be a cylindrical surface, a spherical surface, a gently curved shape, or any other tertiary. An original curved surface may be used. Furthermore, the shape of the panel 1 is not limited to a rectangular shape, and a panel having an arbitrary shape can be used. Further, the planar shape of the convex portion, the concave portion, and the flat portion is not limited to the shape in the above embodiment, and can be an arbitrary shape. The convex part and the concave part do not necessarily have to be formed by the protrusion to the one side and the recess to the other side from the reference surface, and only the protrusion to the one side or only the recess to the other side is intended as a result. It is good also as a panel which has an uneven | corrugated arrangement | positioning and dimension.

  Further, the distance H between the top surfaces of the quadrangular pyramid of the convex part and the concave part does not necessarily need to be larger than the plate thickness, and a panel having a smaller H than the plate thickness t can be used.

  Further, the bending radius of the plate for forming the irregularities can be appropriately set according to the material used for the panel.

  In addition, although the best configuration and method for carrying out the present invention have been disclosed in the above description, the present invention is not limited to these. That is, the present invention has been illustrated and described with particular reference to particular embodiments, but it is not intended to depart from the technical idea and scope of the invention, Various modifications can be made by those skilled in the art in terms of materials, quantities, and other detailed configurations. In particular, the squares in this specification are not limited to exact squares but include rectangles.

  Therefore, the description limited to the shape, material, and the like disclosed above is given as an example to facilitate understanding of the present invention, and the present invention is not limited to these. Therefore, description by the name of the member which remove | excluded the limitation of some or all of those shapes, materials, etc. is contained in this invention.

1, 1A, 1B, 1C, 1D, 1E ... Panel 4A, 4B, 4C, 4D, 4E ... Convex part 5A, 5C ... Flat part 5E ... Top flat part (top top surface)
6, 6B, 6D, 6E ... concave part 42A, 42B, 42C, 42D, 42E ... inclined surface part (convex part inclined surface)
51A, 51B, 51C, 51D, 51E ... Bridge 62B, 62D, 62E ... Inclined surface portion (recessed-side inclined surface)
F ... Reference plane

Claims (14)

At least one surface of the metal plate is coated with a coating film (α) containing an organosilicon compound (A) having an alkylene group, a siloxane bond and a crosslinkable functional group represented by the following general formula [X] as a film-forming component. A panel formed from a painted metal plate,
Among the plurality of convex portions protruding from a predetermined reference surface, the plurality of flat portions flush with the reference surface, and the plurality of concave portions recessed from the reference surface, the convex portion, the flat portion, and the concave portion And the plurality of convex portions, the plurality of flat portions, and the plurality of concave portions have a quadrangular shape,
When the flat portion is provided, the entire periphery of each of the convex portions is surrounded by the flat portion, and the entire periphery of each of the flat portions is surrounded by the convex portions,
When the concave portion is provided, the entire periphery of each of the convex portions is surrounded by the concave portion, and the entire periphery of each of the concave portions is surrounded by the convex portion, and further provided at a peripheral portion of the convex portion. It has an inclined surface portion formed by a convex portion-side inclined surface and a concave portion-side inclined surface provided in a peripheral portion of the concave portion,
The corners of the convex portions adjacent to each other are connected via a bridge having an arc portion provided at the intersection of the inclined surface portion connecting the concave portion and the convex portion.
A panel characterized by that.

-SiR ¹ R ² R ³ ... [X]

(In the formula, R ¹ , R ² and R ³ each independently represent an alkoxy group or a hydroxy group. (Including the case where any one of R ¹ , R ² and R ³ is substituted with a methyl group) .)) The panel according to claim 1, wherein the coating amount of the coating film (α) is 0.2 g / m ² or more and 2.0 g / m ² or less.   The panel according to claim 1, wherein the coating film (α) further contains an organic resin (B) as a film-forming component.   The solid content mass ratio [(A) / (B)] of the organosilicon compound (A) and the organic resin (B) is 0.3 or more and 3 or less, according to claim 3. Panel.   The panel according to claim 1, wherein the organosilicon compound (A) is a hydrolysis condensate of a silane coupling agent.   The organic silicon compound (A) is obtained by a reaction between an amino group-containing silane coupling agent (Aa) and an epoxy group-containing silane coupling agent (Ae). Panel as described in.   The said coating film ((alpha)) contains a lubricant (C) further, The panel of any one of Claims 1-6 characterized by the above-mentioned.   The panel according to claim 7, wherein the lubricant (C) is a polyolefin resin particle (C1).   The panel according to any one of claims 1 to 8, wherein the coating film (α) further contains a phosphoric acid compound (D).   The panel according to claim 9, wherein the coating film (α) further contains at least one selected from the group consisting of a vanadium compound (E) and a fluorometal complex compound (F).   The said coating film ((alpha)) contains the polymer (G) containing the polymer unit based on the (meth) acrylate which further has a perfluoroalkyl group, The panel of Claim 10 characterized by the above-mentioned.   The panel according to any one of claims 1 to 11, wherein the metal plate is a zinc-based plated steel plate or an aluminum-based plated steel plate. The bridge has a top flat;
The area S1 of the flat top surface portion of the convex portion, the area S2 of the flat bottom surface portion of the concave portion, the area S3 of the top flat portion, and the convex side inclined surface which is the side surface of the convex portion, and the concave portion An area S4 of an inclined portion composed of the inclined surface on the concave side which is a side surface of the concave portion and a corner inclined surface extending from the four corners of each of the convex portion and the concave portion toward the reference surface satisfies the following formula 1. The panel according to any one of claims 1 to 12.

(S3 + S4) / (S1 + S2) ≦ 1.0 (Formula 1)
When the convex-side inclined surface and the concave-side inclined surface are viewed in a cross section perpendicular to the reference plane, the convex-side inclined surface and the concave-side inclined surface are continuously connected linearly,
14. The tilt angle of the convex side inclined surface with respect to the reference surface and the tilt angle of the concave side inclined surface with respect to the reference surface are the same as each other. Panel described.

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