JP2011131186A - Method of forming multilayer coating film - Google Patents
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本発明は、ハイライト（正反射光近傍）において金属感に優れた均一な質感を示し、シェード（斜め方向）において模様意匠を発現する観察角度によって塗膜全体の質感が大きく変化する塗膜を形成可能な複層塗膜形成方法に関するものである。 The present invention provides a coating film in which the texture of the entire coating film changes greatly depending on the observation angle that shows a pattern design in the shade (diagonal direction), showing a uniform texture excellent in metal feeling in highlights (near specular reflection light). The present invention relates to a method for forming a multilayer coating film that can be formed.
観察角度によって色の見え方が変化するメタリック塗色は、高級感があり、特に工業製品に適用する塗色として人気が高いものとなっている。また、異なる色が混在する模様意匠は、工業的に生産される建材等に適用されて、天然素材の持つ質感に近づけるものとして人気が高いものになっている。 Metallic paint colors whose color appearance changes depending on the observation angle have a high-class feeling and are particularly popular as paint colors applied to industrial products. In addition, pattern designs in which different colors are mixed are applied to industrially produced building materials and the like, and are becoming popular as being close to the texture of natural materials.
特許文献１には、異なる色及び／又は質感が混在する塗膜の形成方法として、第１ベース塗料による塗膜上に、第１ベース塗料とは色や質感が異なる塗料を、第１ベース塗料による塗膜の一部が露出するように塗装して、色及び／又は質感が異なる部位が混在する模様意匠を付与する塗膜形成方法が記載されている。 In Patent Document 1, as a method of forming a coating film in which different colors and / or textures are mixed, a coating material having a color and a texture different from those of the first base coating material is applied on the coating film by the first base coating material. A coating film forming method is described in which coating is performed so that a part of the coating film is exposed and a pattern design in which parts having different colors and / or textures are mixed is provided.
特許文献１に開示されて方法において、第１ベース塗料又は第２ベース塗料として、観察角度によって色の見え方が変化するメタリック塗色を形成可能な塗料を適用すれば、模様の一部の色が観察角度によって変化するが、塗膜全体の質感が観察角度によって大きく変化するには至らない問題点があった。 In the method disclosed in Patent Document 1, if a paint capable of forming a metallic paint color whose color appearance changes depending on an observation angle is applied as the first base paint or the second base paint, the color of a part of the pattern However, there is a problem that the texture of the entire coating film does not change greatly depending on the observation angle.
本発明の目的は、ハイライト（正反射光近傍）において金属感に優れた均一な質感を示し、シェード（斜め方向）において模様意匠を発現する観察角度によって塗膜全体の質感が大きく変化する塗膜を形成可能な複層塗膜形成方法を提供することである。 An object of the present invention is to provide a coating material that shows a uniform texture with excellent metallic feeling in highlights (near specularly reflected light), and that the texture of the entire coating film varies greatly depending on the observation angle at which the pattern design appears in the shade (oblique direction). It is to provide a method for forming a multilayer coating film capable of forming a film.
本発明は、
１．基材上に、着色顔料及び鱗片状光輝性顔料を含む光輝性塗料組成物を塗装し、該光輝性塗料組成物による塗膜上に着色顔料を含む着色塗料組成物が１０〜５０％被覆し且つ着色塗料組成物による塗膜が不連続となるように塗装し、さらに得られた塗膜上にトップクリヤー塗料を塗装する複層塗膜形成方法であって、光輝性塗料組成物による塗膜が４５度の角度から照射された光を正反射光に対して２５度の角度から受光した分光反射率に基づくＬ＊ａ＊ｂ＊表色系におけるＬ＊値が４０〜１１０の範囲内であり、着色塗料組成物による塗膜と光輝性塗料組成物による塗膜との４５度の角度から照射された光を正反射光に対して２５度の角度から受光した分光反射率に基づくＬ＊の差分であるΔＬが１０〜４０の範囲内である複層塗膜形成方法、
２．着色塗料組成物による塗膜が、塗膜上から見たときの形状が複数の円形及び／又は楕円形の集合であり、各々の円形又は楕円形が、円形の場合は直径、楕円形の場合は短径もしくは長径が１００〜９００μｍの範囲内である１項に記載の複層塗膜形成方法
に関する。
The present invention
1. A glittering paint composition containing a colored pigment and a scaly glittering pigment is applied on a substrate, and a coating composition made of the glittering paint composition is coated with 10 to 50% of the colored coating composition containing the colored pigment. And a method for forming a multi-layer coating film, in which a coating film by a colored coating composition is applied so that the coating film is discontinuous, and a top clear coating material is applied on the obtained coating film. L * value in the L * a * b * color system based on the spectral reflectance obtained by receiving light irradiated from an angle of 45 degrees from an angle of 25 degrees with respect to specularly reflected light. Yes, L * based on the spectral reflectance obtained by receiving the light irradiated from the angle of 45 degrees between the coating film made of the colored coating composition and the coating film made of the glitter coating composition from the angle of 25 degrees with respect to the regular reflection light. ΔL, which is the difference between the two, is in the range of 10 to 40.
2. When the coating film made of the colored coating composition is a collection of a plurality of circles and / or ellipses when viewed from above the coating film, each circle or ellipse is a diameter or an ellipse if it is a circle Relates to the method for forming a multilayer coating film according to item 1, wherein the minor axis or major axis is in the range of 100 to 900 μm.
本発明によれば、ハイライト（正反射光近傍）において金属感に優れた均一な質感を示し、シェード（斜め方向）において模様意匠を発現する観察角度によって塗膜全体の質感が大きく変化する塗膜を形成可能な複層塗膜形成方法を得ることができる。 According to the present invention, a coating material that shows a uniform texture with excellent metallic feeling in highlights (near specularly reflected light) and that greatly changes the texture of the entire coating film depending on the observation angle at which the pattern design appears in the shade (oblique direction). A multilayer coating film forming method capable of forming a film can be obtained.
本発明の複層塗膜形成方法において、基材としては、鉄、亜鉛、アルミニウム等の金属やこれらを含む合金、及びこれらの金属によるメッキまたは蒸着が施された成型物、ならびに、ガラス、プラスチックや発泡体などによる成型物等を挙げることができる。これら素材に応じて適宜、脱脂処理や表面処理して基材とすることができる。さらに、上記基材に下塗り塗膜や中塗り塗膜を形成させて基材とすることもでき、これらのものが特に好ましい。 In the method for forming a multilayer coating film of the present invention, the base material is a metal such as iron, zinc or aluminum, an alloy containing these, a molded product plated or vapor-deposited with these metals, and glass or plastic. And a molded product made of foam or the like. Depending on these materials, it can be appropriately degreased or surface treated to form a substrate. Furthermore, an undercoat film or an intermediate coat film can be formed on the substrate to form a substrate, and these are particularly preferable.
上記下塗り塗膜とは、素材表面を隠蔽したり、素材に防食性及び防錆性などを付与するために形成されるものであり、下塗り塗料を塗装し、乾燥、硬化することによって得ることができる。この下塗り塗料種としては特に限定されるものではなく、例えば、電着塗料、溶剤型プライマー等を挙げることができる。 The undercoat film is formed to conceal the surface of the material or impart anticorrosion and rustproofness to the material, and can be obtained by applying an undercoat paint, drying and curing. it can. The type of the undercoat paint is not particularly limited, and examples thereof include an electrodeposition paint and a solvent-type primer.
また、上記中塗り塗膜とは、下塗り塗膜を隠蔽したり、付着性や耐チッピング性などを付与するために形成されるものであり、乾燥硬化した下塗り塗膜又は未硬化の下塗り塗膜上に、中塗り塗料を塗装し、乾燥、硬化することによって得ることができる。中塗り塗料種は、特に限定されるものではなく、既知のものを使用でき、例えば、熱硬化性樹脂組成物及び着色顔料を必須成分とする有機溶剤系又は水系の中塗り塗料を好ましく使用できる。 The intermediate coating film is formed to conceal the undercoat film or impart adhesion, chipping resistance, etc., and is a dry-cured undercoat film or an uncured undercoat film. It can be obtained by applying an intermediate coating on top, drying and curing. The type of intermediate coating is not particularly limited, and known ones can be used. For example, an organic solvent-based or water-based intermediate coating containing a thermosetting resin composition and a color pigment as essential components can be preferably used. .
また、基材として、下塗り塗膜あるいは中塗り塗膜を形成させる場合においては、下塗り塗膜あるいは中塗り塗膜を加熱し、架橋硬化後に本発明の塗料組成物を塗装することができる。あるいは、下塗り塗膜及び／又は中塗り塗膜が未硬化の状態で、塗装することもできる。 In the case where an undercoat film or an intermediate coat film is formed as a substrate, the undercoat film or the intermediate coat film can be heated, and the coating composition of the present invention can be applied after crosslinking and curing. Alternatively, the undercoating film and / or the intermediate coating film can be applied in an uncured state.
本発明の複層塗膜形成方法においては、上記の如き基材上に、塗装して得られる塗膜に対して４５度の角度から照射されて光を正反射光に対して２５度の角度から受光した分光反射率に基づくＬ＊ａ＊ｂ＊表色系におけるＬ＊値が４０〜１１０の範囲内である光輝性塗料組成物を塗装する。Ｌ＊ａ＊ｂ＊表色系とは、１９７６年に国際照明委員会で規定され、ＪＩＳ Ｚ ８７２９にも採用されている表色系であり、Ｌ＊は明度を表わす数値である。本明細書において、光輝性塗料組成物による塗膜のＬ＊ａ＊ｂ＊表色系における明度Ｌ＊は、光輝性塗料組成物を塗装可能な粘度となるように水や有機溶媒を加えて希釈攪拌し、予めＮ−６グレー色に塗装された塗板上に硬化塗膜として膜厚３０μｍとなるように塗装し、乾燥硬化した光輝性塗料組成物による塗膜をＭＡ−６８ＩＩ（商品名、多角度分光光度計、Ｘ−Ｒｉｔｅ社製）を使用して、塗膜に対して４５度から照射した光を正反射光から２５度の角度で受光したときの分光反射率から計算して得られた数値とする。 In the method for forming a multilayer coating film of the present invention, the coating film obtained by coating on the substrate as described above is irradiated at an angle of 45 degrees with respect to the specularly reflected light. A glittering paint composition having an L * value in the range of 40 to 110 in the L * a * b * color system based on the spectral reflectance received from is applied. The L * a * b * color system is a color system defined by the International Lighting Commission in 1976 and adopted in JIS Z 8729, and L * is a numerical value representing lightness. In the present specification, the brightness L * in the L * a * b * color system of the coating film with the glittering paint composition is determined by adding water or an organic solvent so that the viscosity can be applied to the glittering paint composition. Diluted and agitated, coated on a coated plate pre-coated in N-6 gray color so as to have a film thickness of 30 μm as a cured coating film, a coating film obtained by drying and curing the glittering paint composition was applied to MA-68II (trade name, Using a multi-angle spectrophotometer (manufactured by X-Rite), it is obtained by calculating from the spectral reflectance when the light irradiated from 45 degrees to the coating film is received at an angle of 25 degrees from the regular reflection light It is assumed to be a numerical value.
本発明の光輝性塗料組成物は、塗装して得られる塗膜の明度を前記範囲となるように制御するために、着色顔料を配合する。着色顔料としては、特に制限されるものではないが、具体的には、透明性酸化鉄顔料、チタンイエロー等の複合酸化物顔料等の無機顔料やアゾ系顔料、キナクリドン系顔料、ジケトピロロピロール系顔料、ペリレン系顔料、ペリノン系顔料、ベンズイミダゾロン系顔料、イソインドリン系顔料、イソインドリノン系顔料、金属キレートアゾ系顔料、フタロシアニン系顔料、アンスラキノン系顔料、ジオキサジン系顔料、スレン系顔料、インジゴ系顔料等の有機顔料、酸化チタン顔料及びカーボンブラック顔料等の中から任意のものを１種もしくはそれ以上を組み合わせて使用することができる。 In the glittering paint composition of the present invention, a color pigment is blended in order to control the lightness of a coating film obtained by coating so as to be within the above range. The color pigment is not particularly limited, and specifically, inorganic pigments such as transparent iron oxide pigments, complex oxide pigments such as titanium yellow, azo pigments, quinacridone pigments, diketopyrrolopyrrole. Pigments, perylene pigments, perinone pigments, benzimidazolone pigments, isoindoline pigments, isoindolinone pigments, metal chelate azo pigments, phthalocyanine pigments, anthraquinone pigments, dioxazine pigments, selenium pigments, Any one of organic pigments such as indigo pigments, titanium oxide pigments and carbon black pigments can be used in combination of one or more.
本発明の光輝性塗料組成物における着色顔料の含有量は、複層塗膜のハイライト部において金属感を発現する点から、後述するビヒクル形成成分である樹脂固形分１００質量部に対し０．０１〜２０質量部の範囲内であることが好ましく、より好ましくは０．１〜１８質量部、特に好ましくは０．１〜１５質量部の範囲内であることが好ましい。 The content of the color pigment in the glittering paint composition of the present invention is from 0 to 100 parts by mass with respect to 100 parts by mass of resin solids, which is a vehicle forming component described later, from the viewpoint of expressing a metallic feeling in the highlight part of the multilayer coating film. It is preferably within a range of 01 to 20 parts by mass, more preferably 0.1 to 18 parts by mass, and particularly preferably within a range of 0.1 to 15 parts by mass.
本発明の光輝性塗料組成物には、複層塗膜のハイライトにおける金属感を発現させるために鱗片状光輝性顔料を配合する。鱗片状光輝性顔料としては、例えばアルミニウム、銅、ニッケル合金、ステンレス等の鱗片状金属顔料、表面を金属酸化物で被覆した鱗片状金属顔料、表面に着色顔料を化学吸着させた鱗片状金属顔料、表面に酸化還元反応を起こさせることにより酸化アルミニウム層を形成した鱗片状アルミニウム顔料、アルミニウム固溶板状酸化鉄顔料、ガラスフレーク顔料、表面を金属又は金属酸化物で被覆したガラスフレーク顔料、表面に着色顔料を化学吸着させたガラスフレーク顔料、表面を二酸化チタンで被覆した干渉マイカ顔料、干渉マイカ顔料を還元した還元マイカ顔料、表面に着色顔料を化学吸着させたり、表面を酸化鉄で被覆した着色マイカ顔料、表面を二酸化チタンで被覆したグラファイト顔料、表面を二酸化チタンで被覆したシリカフレークやアルミナフレーク顔料、板状酸化鉄顔料、ホログラム顔料、合成マイカ顔料、らせん構造を持つコレステリック液晶ポリマー顔料、オキシ塩化ビスマス顔料などが挙げられる。本発明においては、これらのうちで、反射性の高い鱗片状光輝性顔料である鱗片状アルミニウム顔料や、鱗片状アルミニウム顔料の表面に着色顔料を担持させたり、金属酸化物を被覆させたりすることで着色させた着色アルミニウム顔料を使用することが、複層塗膜のハイライトにおける金属感の点から好ましい。 In the glittering paint composition of the present invention, a scaly glittering pigment is blended in order to develop a metallic feeling in the highlight of the multilayer coating film. Examples of the scaly glittering pigment include scaly metal pigments such as aluminum, copper, nickel alloys, and stainless steel, scaly metal pigments whose surfaces are coated with metal oxides, and scaly metal pigments that have a colored pigment chemically adsorbed on the surface. , Scaly aluminum pigments that have formed an aluminum oxide layer by causing a redox reaction on the surface, aluminum solid solution plate-like iron oxide pigments, glass flake pigments, glass flake pigments whose surfaces are coated with metal or metal oxides, surfaces Glass flake pigments with colored pigments chemically adsorbed, interference mica pigments coated with titanium dioxide on the surface, reduced mica pigments with reduced interference mica pigments, colored pigments chemically adsorbed on the surface, or surfaces coated with iron oxide Colored mica pigment, graphite pigment coated with titanium dioxide on the surface, silica coated with titanium dioxide on the surface Lake, alumina flake pigments, plate iron oxide pigments, holographic pigments, synthetic mica pigments, cholesteric liquid crystal polymer pigments having a helical structure, and the like oxy bismuth pigments chloride. In the present invention, among these, a scaly aluminum pigment that is a highly reflective scaly glittering pigment, or a surface of the scaly aluminum pigment is supported with a colored pigment or coated with a metal oxide. It is preferable to use a colored aluminum pigment colored with a metal feeling in the highlight of the multilayer coating film.
また、鱗片状光輝性顔料の大きさは、平均粒径が５〜４５μｍの範囲内のものを使用することが、塗装された塗膜の仕上がり性の点から好ましく、より好ましくは粒径が７〜３０μｍの範囲内もの、特に好ましくは８〜２５μｍの範囲内ものである。厚さは０．０５〜１．５μｍの範囲内のものを使用することが好ましい。ここでいう粒径及び厚さは、光学顕微鏡又は電子顕微鏡で該鱗片状光輝性顔料を観察して得られた数値を意味する。 In addition, the scale-like glitter pigment preferably has an average particle diameter in the range of 5 to 45 μm from the viewpoint of the finish of the coated film, more preferably the particle diameter is 7 It is in the range of -30 μm, particularly preferably in the range of 8-25 μm. It is preferable to use a thickness in the range of 0.05 to 1.5 μm. The particle diameter and thickness here mean numerical values obtained by observing the scaly glittering pigment with an optical microscope or an electron microscope.
また、鱗片状光輝性顔料の含有量は、塗装して得られる塗膜のハイライトにおける金属感や、仕上がり性の点から、光輝性塗料組成物におけるビヒクル形成成分である塗料中の樹脂固形分１００質量部に対して、合計で０．０１〜３０質量部の範囲内が好ましく、より好ましくは０．０５〜２５質量部の範囲内、特に好ましくは１〜２０質量部の範囲内である。 In addition, the content of the scaly glitter pigment is the solid content of the resin in the paint, which is a vehicle-forming component in the glitter paint composition, in terms of the metallic feel and finish in the highlight of the coating film obtained by painting. The total amount is preferably in the range of 0.01 to 30 parts by mass, more preferably in the range of 0.05 to 25 parts by mass, and particularly preferably in the range of 1 to 20 parts by mass with respect to 100 parts by mass.
本発明の光輝性塗料組成物には、通常、ビヒクルとして、樹脂成分を含有することができる。樹脂成分としては、具体的には、水酸基などの架橋性官能基を有する、アクリル樹脂、ポリエステル樹脂、アルキド樹脂、ウレタン樹脂などの基体樹脂と、必要に応じてメラミン樹脂、尿素樹脂、ポリイソシアネート化合物（ブロック体も含む）などの架橋剤とを併用したものが挙げられ、これらは有機溶剤及び／又は水などの溶媒に溶解または分散して使用される。 The glittering paint composition of the present invention can usually contain a resin component as a vehicle. Specific examples of the resin component include base resins such as acrylic resins, polyester resins, alkyd resins, and urethane resins having a crosslinkable functional group such as a hydroxyl group, and melamine resins, urea resins, and polyisocyanate compounds as necessary. Examples include those used in combination with a crosslinking agent such as (including a block body), and these are used by being dissolved or dispersed in a solvent such as an organic solvent and / or water.
さらに、光輝性塗料組成物には、必要に応じて、水あるいは有機溶剤等の溶媒、顔料分散剤、沈降防止剤、硬化触媒、消泡剤、酸化防止剤、紫外線吸収剤等の各種添加剤、体質顔料などを適宜配合することができる。 Furthermore, for the glittering paint composition, various additives such as a solvent such as water or an organic solvent, a pigment dispersant, an anti-settling agent, a curing catalyst, an antifoaming agent, an antioxidant, and an ultraviolet absorber, as necessary. Further, extender pigments and the like can be appropriately blended.
光輝性塗料組成物は、前述の成分を混合分散せしめることによって調製することができる。塗装時の固形分含有率を、塗料組成物に基づいて、１２〜６０質量％、好ましくは１５〜５０質量％に、２０℃における粘度を１７〜２３秒／フォードカップ＃３に調整しておくことが好ましい。 The glitter coating composition can be prepared by mixing and dispersing the above-mentioned components. The solid content at the time of coating is adjusted to 12 to 60% by mass, preferably 15 to 50% by mass, and the viscosity at 20 ° C. is adjusted to 17 to 23 seconds / Ford Cup # 3 based on the coating composition. It is preferable.
光輝性塗料組成物は、静電塗装、エアスプレー、エアレススプレーなどの方法で塗装することができ、その膜厚は硬化塗膜に基づいて１〜５０μｍの範囲内とするのが、基材を隠蔽する点や塗膜の平滑性の点から好ましく、より好ましくは１〜３０μｍの範囲内である。通常、常温〜約１５０℃の温度で架橋硬化させることができる。 The glitter coating composition can be applied by electrostatic coating, air spraying, airless spraying, etc., and the film thickness is within the range of 1 to 50 μm based on the cured coating film. It is preferable from the point of concealment and the smoothness of a coating film, More preferably, it exists in the range of 1-30 micrometers. Usually, crosslinking and curing can be performed at a temperature of from room temperature to about 150 ° C.
本発明の複層塗膜形成方法においては、前述の方法で形成された光輝性塗料組成物による塗膜上に、着色顔料を含み、塗装して得られた塗膜の４５度の角度から照射されて光を正反射光に対して２５度の角度から受光した分光反射率に基づくＬ＊と、前記光輝性塗料組成物による塗膜のＬ＊との差分であるΔＬが１０〜４０の範囲内である着色塗料組成物を塗装する。 In the method for forming a multilayer coating film of the present invention, irradiation is performed from a 45-degree angle of a coating film obtained by applying a coating containing a coloring pigment on the coating film formed by the glittering paint composition formed by the above-described method. ΔL, which is the difference between the L * based on the spectral reflectance obtained by receiving the light from the angle of 25 degrees with respect to the specularly reflected light and the L * of the coating film made of the glitter coating composition, is in the range of 10-40. A colored coating composition is applied.
本発明の着色塗料組成物に配合する着色顔料は、シェードにおいて模様意匠を発現せしめるために、該着色塗料組成物による塗膜と前記光輝性塗料組成物による塗膜とのΔＬを調整するために種類や量を決定するものである。試用する着色顔料としては特に制限されるものではないが、前記光輝性塗料組成物に配合することができるものとして例示したものの中から１種以上を選択して使用することができるが、シェード方向おける模様意匠を強く発現し、複層塗膜の観察角度における質感の変化を大きくさせる点から、酸化チタン顔料を使用することが好ましい。 The color pigment to be blended in the colored coating composition of the present invention is for adjusting ΔL between the coating film made of the colored coating composition and the coating film made of the glittering coating composition in order to develop a pattern design in the shade. It determines the type and quantity. Although it does not restrict | limit especially as a coloring pigment used as a trial, Although it can select and use 1 or more types from what was illustrated as what can be mix | blended with the said glitter paint composition, Shade direction It is preferable to use a titanium oxide pigment from the standpoint of strongly expressing the pattern design and increasing the change in texture at the observation angle of the multilayer coating film.
酸化チタン顔料は、屈折率が高いことから白色顔料として広く使用されているものであり、結晶形によってルチル型とアナターゼ型があり、本発明においてはいずれを使用しても良いが、耐候性の点からルチル型を使用することができる。また、分散性や耐候性を向上させることを目的として、表面をシリカ、ジルコニウム、アルミニウム等の無機化合物で処理したものを使用しても良い。本発明においては、複層塗膜のシェードにおける模様発現の点から、一次粒子径が１００〜４００ｎｍの範囲内のものを使用することが好ましく、さらに好ましくは、２００〜３００ｎｍの範囲内のものである。 Titanium oxide pigments are widely used as white pigments because of their high refractive index, and there are rutile and anatase types depending on the crystal form, and any of these may be used in the present invention. From the point of view, the rutile type can be used. Moreover, you may use what processed the surface with inorganic compounds, such as a silica, a zirconium, and aluminum, for the purpose of improving a dispersibility and a weather resistance. In the present invention, it is preferable to use those having a primary particle diameter in the range of 100 to 400 nm, more preferably in the range of 200 to 300 nm, from the viewpoint of pattern expression in the shade of the multilayer coating film. is there.
着色塗料組成物への酸化チタン顔料の含有量は、仕上がり性の点から、後述するビヒクル形成成分である樹脂固形分１００質量部に対して、１０〜２００質量部が好ましく、特に好ましくは、３０〜１２０質量部である。 The content of the titanium oxide pigment in the colored coating composition is preferably 10 to 200 parts by weight, particularly preferably 30 parts, based on 100 parts by weight of resin solids, which is a vehicle-forming component described later, from the viewpoint of finish. -120 parts by mass.
着色塗料組成物には、酸化チタン顔料以外の着色顔料を、複層塗膜の明度を微調整することを目的として配合することができる。その場合、配合量は、複層塗膜の明度の点から、樹脂固形分１００質量部に対し３０質量％以下とすることが好ましく、より好ましくは０．０５〜２０質量部の範囲内であることが好ましい。 A colored pigment other than the titanium oxide pigment can be blended in the colored coating composition for the purpose of finely adjusting the lightness of the multilayer coating film. In that case, the blending amount is preferably 30% by mass or less, more preferably in the range of 0.05 to 20 parts by mass with respect to 100 parts by mass of the resin solid content, from the point of brightness of the multilayer coating film. It is preferable.
着色塗料組成物は、前述の成分を混合分散せしめることによって調製される。塗装時の固形分含有率を、塗料組成物に基づいて、１２〜６０質量％、好ましくは１５〜５０質量％に、２０℃における粘度を１７〜２３秒／フォードカップ＃３に調整しておくことが好ましい。 The colored coating composition is prepared by mixing and dispersing the aforementioned components. The solid content at the time of coating is adjusted to 12 to 60% by mass, preferably 15 to 50% by mass, and the viscosity at 20 ° C. is adjusted to 17 to 23 seconds / Ford Cup # 3 based on the coating composition. It is preferable.
着色塗料組成物は、静電塗装、エアスプレー、エアレススプレーなどの方法で塗装することができる。本発明の複層塗膜方法においては、着色塗料組成物による塗膜が不連続であり且つ着色塗料組成物による塗膜の面積が、光輝性塗料組成物による塗膜の面積の１０〜５０％の範囲内となるように塗装するのが好ましく、より好ましくは１０〜３０％の範囲内であることが好ましい。さらに、模様塗膜の発現の点から、光輝性塗料組成物による塗膜が、塗膜上から見たときの形状が複数の円形及び／又は楕円形の集合であり、各々の円形又は楕円形が、円形の場合は直径、楕円形の場合は短径もしくは長径が１００〜９００μｍの範囲内となるように塗装する。 The colored coating composition can be applied by a method such as electrostatic coating, air spray, or airless spray. In the multilayer coating film method of the present invention, the coating film formed of the colored coating composition is discontinuous, and the area of the coating film formed of the colored coating composition is 10 to 50% of the area of the coating film formed of the glittering coating composition. It is preferable to coat so that it may become in this range, More preferably, it is preferable to exist in the range of 10 to 30%. Furthermore, in terms of the appearance of the pattern coating film, the coating film by the glittering coating composition is a set of a plurality of circular and / or elliptical shapes when viewed from above the coating film, and each circular or elliptical shape However, in the case of a circle, the diameter is applied, and in the case of an ellipse, the short diameter or the long diameter is applied so as to fall within a range of 100 to 900 μm.
具体的な塗装方法としては、例えば回転霧化方式の塗装機を使用する場合には、仕上がり性を重視した通常の塗装方法の場合と比較して、回転数、シェーピングエア圧を低く設定して、塗料の微粒化を悪くして塗装することができる。 As a specific coating method, for example, when using a rotary atomizing type coating machine, the rotation speed and shaping air pressure are set lower than in the case of a normal coating method that emphasizes finish. It can be applied with poor atomization of the paint.
例えば、メタベル（ＡＢＢ社製）を用いて塗装する場合において、スプレー時の塗料固形分３５％の場合、ベル回転数３００００ｒｐｍ、シェーピングエア圧３．０ｋｇ／ｃｍ２、吐出量約１５０ｃｃ／分、電圧−９０Ｋｖ、ガン距離２５ｃｍの条件で、平滑な仕上がりになるのであれば、ベル回転数を約１／３の７０００〜１３０００ｒｐｍ、シェーピングエア圧０．５〜１．５ｋｇ／ｃｍ２に変更すればよい。 For example, when painting using Metabell (manufactured by ABB), when the paint solid content is 35% at the time of spraying, the bell rotation speed is 30000 rpm, the shaping air pressure is 3.0 kg / cm 2 , the discharge amount is about 150 cc / min, the voltage If the smooth finish is achieved under the conditions of -90 Kv and gun distance of 25 cm, the bell rotation speed may be changed to approximately 1/3 to 7000-13000 rpm and the shaping air pressure 0.5-1.5 kg / cm 2. .
本発明の複層塗膜形成方法においては、光輝性塗料組成物を塗装後、硬化又は未硬化の状態でさらにトップクリヤー塗料を１層もしくは２層以上塗装して、トップクリヤー塗膜を形成する。 In the method for forming a multi-layer coating film of the present invention, after applying the glitter coating composition, one or more top clear coatings are further applied in a cured or uncured state to form a top clear coating film. .
本発明の塗膜形成方法におけるトップクリヤー塗料は、樹脂成分および溶剤を主成分とし、さらに必要に応じてその他の塗料用添加剤などを配合してなる無色もしくは有色の透明塗膜を形成する液状塗料である。 The top clear coating in the method for forming a coating film of the present invention is a liquid that forms a colorless or colored transparent coating film comprising a resin component and a solvent as main components, and further blending with other coating additives as required. It is a paint.
本発明方法におけるトップクリヤー塗料としては、従来公知のものが制限なく使用できる。例えば、基体樹脂及び架橋剤を含有する液状もしくは粉体状の塗料組成物が適用できる。基体樹脂の例としては、水酸基、カルボキシル基、シラノール基、エポキシ基などの架橋性官能基を含有する、アクリル樹脂、ポリエステル樹脂、アルキド樹脂、フッ素樹脂、ウレタン樹脂、シリコン含有樹脂などが挙げられる。架橋剤としては、前記基体樹脂の官能基と反応しうるメラミン樹脂、尿素樹脂、ポリイソシアネート化合物、ブロックポリイソシアネート化合物、エポキシ化合物又は樹脂、カルボキシル基含有化合物又は樹脂、酸無水物、アルコキシシラン基含有化合物又は樹脂等が挙げられる。また、必要に応じて、水や有機溶剤等の溶媒、硬化触媒、消泡剤、レオロジーコントロール剤、酸化防止剤、表面調整剤等の添加剤を適宜配合することができる。 As the top clear coating in the method of the present invention, conventionally known ones can be used without limitation. For example, a liquid or powdery coating composition containing a base resin and a crosslinking agent can be applied. Examples of the base resin include acrylic resin, polyester resin, alkyd resin, fluororesin, urethane resin, and silicon-containing resin containing a crosslinkable functional group such as a hydroxyl group, a carboxyl group, a silanol group, and an epoxy group. As a crosslinking agent, melamine resin, urea resin, polyisocyanate compound, block polyisocyanate compound, epoxy compound or resin, carboxyl group-containing compound or resin, acid anhydride, alkoxysilane group-containing, which can react with the functional group of the base resin Examples thereof include compounds or resins. Further, if necessary, additives such as a solvent such as water and an organic solvent, a curing catalyst, an antifoaming agent, a rheology control agent, an antioxidant, and a surface conditioner can be appropriately blended.
上記トップクリヤー塗料には、透明性を損なわない範囲内において、着色顔料を適宜配合することができる。着色顔料としては、インク用、塗料用として従来公知の顔料を１種あるいは２種以上を組み合わせて配合することができる。その添加量は、適宜決定されて良いが、トップクリヤー塗料中の樹脂固形分１００質量部に対して、３０質量部以下、好ましくは０.０１〜５質量部である。 A color pigment can be appropriately blended with the top clear coating within a range that does not impair the transparency. As the color pigment, one or a combination of two or more conventionally known pigments for ink and paint can be blended. The amount of addition may be determined as appropriate, but is 30 parts by mass or less, preferably 0.01 to 5 parts by mass with respect to 100 parts by mass of the resin solid content in the top clear coating.
上記トップクリヤー塗料は、静電塗装、エアスプレー、エアレススプレーなどの方法で塗装することができ、その膜厚は硬化塗膜に基づいて５〜４０μｍの範囲内とするのが好ましい。トップクリヤー塗料の塗膜それ自体は常温〜１５０℃の温度で架橋硬化させることができる。 The top clear coating can be applied by electrostatic coating, air spraying, airless spraying or the like, and the film thickness is preferably in the range of 5 to 40 μm based on the cured coating film. The coating film of the top clear coating itself can be crosslinked and cured at a temperature from room temperature to 150 ° C.
以下、実施例及び比較例を挙げて本発明をさらに具体的に説明する。ただし、本発明はこれらの実施例のみに限定されるものではない。なお、「部」及び「％」はいずれも質量基準によるものである。
次に、実施例を挙げて、本発明をより具体的に説明する。
（製造例１）水酸基含有アクリル樹脂の製造
温度計、サーモスタット、撹拌器、還流冷却器及び滴下装置を備えた反応容器にエチレングリコールモノエチルエーテルアセテート４０部を仕込み、撹拌混合し、１３５℃に昇温した。次いで下記のモノマー／重合開始剤の混合物を３時間かけて、同温度に保持した反応容器内に滴下し、滴下終了後１時間熟成を行なった。その後、エチレングリコールモノエチルエーテルアセテート１０部、２，２'−アゾビス（２−メチルプロピオニトリル）０．６部からなる混合物を同温度に保持した１時間３０分かけて滴下し、さらに２時間熟成した。次にエチレングリコールモノエチルエーテルアセテートを減圧下で留去し、水酸基価５４ｍｇＫＯＨ／ｇ、数平均分子量２０，０００、樹脂固形分６５質量％の水酸基含有アクリル樹脂を得た。ここで数平均分子量とは、ゲル浸透クロマトグラフィー（ＧＰＣ）によって標準ポリスチレンの検量線を用いて測定したものを意味する。
モノマー／重合開始剤の混合物：
メチルメタクリレート３８部、エチルアクリレート１７部、ｎ−ブチルアクリレート１７部、ヒドロキシエチルメタクリレート７部、ラウリルメタクリレート２０部及びアクリル酸１部及び２，２'−アゾビス（２−メチルプロピオニトリル）２部からなる混合物。
（製造例２）酸化チタン顔料分散体の調製
２２５ｍｌ容マヨネーズビンに、製造例１で得られた水酸基含有アクリル樹脂１５.４部、溶剤２０部、ＣＲ−９５（商品名、白色酸化チタン、石原産業社製）５０部を投入し、攪拌混合後、さらに１．５ｍｍ径のガラスビーズ１３０部を投入して密栓し、ＤＡＳＨ２０００ーＫ Ｄｉｓｐｅｒｓｅｒ（商品名、ＬＡＵ社製、振とう型ペイントコンディショナー）を使用して６０分間分散した。分散後１００メッシュの金網濾過を行なってガラスビーズを除去して、固形分７０．３質量％、顔料固形分／樹脂固形分５／１の酸化チタン顔料分散体を得た。
（製造例３）カーボンブラック顔料分散体の調製
２２５ｍｌ容マヨネーズビンに、Ｍｏｎａｒｃｈ１３００（商品名、カーボンブラック顔料、キャボット社製）を７．４部、製造例１で得られた水酸基含有アクリル樹脂５７．１部及び溶剤４５．９部を配合し、さらに１．５ｍｍ径のジルコニアビーズ１３０部を投入して密栓し、振とう型ペイントコンディショナーを使用して１２０分分散した。分散後１００メッシュの金網濾過を行なってジルコニアビーズを除去して、固形分４０．３質量％、顔料固形分／樹脂固形分５／１のカーボンブラック顔料分散体を得た。
Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to only these examples. “Part” and “%” are based on mass.
Next, an Example is given and this invention is demonstrated more concretely.
(Production Example 1) Production of hydroxyl group-containing acrylic resin 40 parts of ethylene glycol monoethyl ether acetate was charged into a reaction vessel equipped with a thermometer, thermostat, stirrer, reflux condenser and dropping device, stirred and mixed, and the temperature was raised to 135 ° C. Warm up. Subsequently, the following monomer / polymerization initiator mixture was dropped into a reaction vessel maintained at the same temperature over 3 hours, and aging was performed for 1 hour after the completion of the dropping. Thereafter, a mixture of 10 parts of ethylene glycol monoethyl ether acetate and 0.6 parts of 2,2′-azobis (2-methylpropionitrile) was added dropwise over 1 hour 30 minutes maintained at the same temperature, and further 2 hours. Aged. Next, ethylene glycol monoethyl ether acetate was distilled off under reduced pressure to obtain a hydroxyl group-containing acrylic resin having a hydroxyl value of 54 mgKOH / g, a number average molecular weight of 20,000, and a resin solid content of 65% by mass. Here, the number average molecular weight means that measured by gel permeation chromatography (GPC) using a standard polystyrene calibration curve.
Monomer / polymerization initiator mixture:
From 38 parts of methyl methacrylate, 17 parts of ethyl acrylate, 17 parts of n-butyl acrylate, 7 parts of hydroxyethyl methacrylate, 20 parts of lauryl methacrylate and 1 part of acrylic acid and 2 parts of 2,2′-azobis (2-methylpropionitrile) Mixture.
(Production Example 2) Preparation of Titanium Oxide Pigment Dispersion In a 225 ml mayonnaise bottle, 15.4 parts of the hydroxyl group-containing acrylic resin obtained in Production Example 1, 20 parts of solvent, CR-95 (trade name, white titanium oxide, Ishihara Sangyo Co., Ltd.) (50 parts), after stirring and mixing, add 1.5 parts of glass beads with a diameter of 1.5 mm and seal tightly. Dispersed for 60 minutes using. After dispersion, 100-mesh wire mesh filtration was performed to remove the glass beads to obtain a titanium oxide pigment dispersion having a solid content of 70.3% by mass and a pigment solid content / resin solid content of 5/1.
Production Example 3 Preparation of Carbon Black Pigment Dispersion In a 225 ml mayonnaise bin, 7.4 parts of Monarch 1300 (trade name, carbon black pigment, manufactured by Cabot Corporation), and the hydroxyl group-containing acrylic resin obtained in Production Example 1 57. 1 part and 45.9 parts of a solvent were blended, and further 150 parts of 1.5 mm zirconia beads were added and sealed, and dispersed for 120 minutes using a shaking paint conditioner. After the dispersion, 100-mesh wire mesh filtration was performed to remove zirconia beads to obtain a carbon black pigment dispersion having a solid content of 40.3% by mass and a pigment solid content / resin solid content of 5/1.
（製造例５）鱗片状アルミニウム顔料液の調製
ステンレス製ビーカー内において、アルミペーストＧＸ−１８０Ａ（商品名、鱗片状アルミニウム顔料ペースト、固形分７４質量％、平均粒子径１６．９μｍ、旭化成メタルズ社製）１３５部、溶剤１００質量部を攪拌混合して、鱗片状アルミニウム顔料液を得た。
(Production Example 5) Preparation of scaly aluminum pigment liquid In a stainless steel beaker, aluminum paste GX-180A (trade name, scaly aluminum pigment paste, solid content 74% by mass, average particle size 16.9 μm, manufactured by Asahi Kasei Metals Corporation ) 135 parts and 100 parts by mass of solvent were mixed with stirring to obtain a scaly aluminum pigment solution.
（製造例６〜９）光輝性塗料組成物１〜３の調製
ステンレス製ビーカーに製造例１で得られた水酸基含有アクリル樹脂、ユーバン２８ー６０（商品名、ブチルエーテル化メラミン樹脂、三井化学社製）、製造例３で得られたカーボンブラック顔料分散体を表１に示す量となるように投入し、攪拌混合した後にさらに製造例５で得られた鱗片状アルミニウム顔料液を表１に示す量となるように投入し、さらに有機溶剤を用いて塗装に適正な粘度に希釈して、光輝性塗料組成物１〜４を調製した。
(Production Examples 6 to 9) Preparation of glittering paint compositions 1 to 3 Hydroxyl-containing acrylic resin obtained in Production Example 1 in a stainless steel beaker, Uban 28-60 (trade name, butyl etherified melamine resin, manufactured by Mitsui Chemicals, Inc.) ), The carbon black pigment dispersion obtained in Production Example 3 was added so as to have the amount shown in Table 1, and after stirring and mixing, the scaly aluminum pigment liquid obtained in Production Example 5 was further contained in Table 1 And further diluted with an organic solvent to a viscosity suitable for coating to prepare glittering paint compositions 1-4.
（製造例１０〜１２）着色塗料組成物１〜３を調製
ステンレス製ビーカーに製造例１で得られた水酸基含有アクリル樹脂、ユーバン２８ー６０（商品名、ブチルエーテル化メラミン樹脂、三井化学社製）、製造例２で得られた酸化チタン顔料分散体及び製造例３で得られたカーボンブラック顔料分散体を表１に示す量となるように投入し、攪拌混合した後にさらに有機溶剤を用いて塗装に適正な粘度に希釈して、着色塗料組成物１〜３を調製した。
(Production Examples 10 to 12) Preparation of colored coating compositions 1 to 3 In a stainless steel beaker, the hydroxyl group-containing acrylic resin obtained in Production Example 1, Uban 28-60 (trade name, butyl etherified melamine resin, manufactured by Mitsui Chemicals, Inc.) The titanium oxide pigment dispersion obtained in Production Example 2 and the carbon black pigment dispersion obtained in Production Example 3 were added so as to have the amounts shown in Table 1, and mixed with stirring, and then further coated with an organic solvent. Was diluted to an appropriate viscosity to prepare colored coating compositions 1 to 3.
（明度の測定）
光輝性塗料組成物及び着色塗料組成物の明度を次に示す要領で測定し、結果を表１に示した。
(Measurement of brightness)
The brightness of the glittering paint composition and the colored paint composition was measured in the following manner, and the results are shown in Table 1.
平滑なブリキ板を溶剤脱脂し、中塗塗料「ルーガベーク中塗りグレーＮ−６」（商品名：関西ペイント株式会社製、ポリエステル樹脂・メラミン樹脂系、有機溶剤型）をエアスプレーにて硬化塗膜に基づいて膜厚３０μｍとなるように塗装し、気温約２０℃の実験室内に１５分間静置後、熱風乾燥機を使用して１４０℃で３０分加熱して架橋硬化させて、グレー（Ｎ−６）の中塗塗膜を形成した。 Degrease a smooth tin plate with solvent, and apply an intermediate coating "Lugabake Intermediate Gray N-6" (trade name: polyester resin / melamine resin, organic solvent type, manufactured by Kansai Paint Co., Ltd.) to a cured coating film by air spray The coating was applied to a film thickness of 30 μm, and allowed to stand in a laboratory with an air temperature of about 20 ° C. for 15 minutes, and then heated at 140 ° C. for 30 minutes using a hot air dryer to be crosslinked and cured. 6) An intermediate coating film was formed.
中塗塗膜上に、光輝性塗料組成物及び着色塗料組成物をエアスプレーにて硬化塗膜に基づいて膜厚３０μｍとなるように塗装し、気温約２０℃の実験室内に１５分間静置後、熱風乾燥機を使用して１４０℃で３０分加熱して架橋硬化せしめて、光輝性塗料組成物及び着色と量組成物による塗膜を得た。 On the intermediate coating film, the glitter paint composition and the colored paint composition are applied by air spray so as to have a film thickness of 30 μm based on the cured coating film, and then allowed to stand in a laboratory at an air temperature of about 20 ° C. for 15 minutes. Then, using a hot air dryer, it was heated at 140 ° C. for 30 minutes to be crosslinked and cured to obtain a coating film with a glittering paint composition and a coloring and quantity composition.
得られた塗膜のＬ＊ａ＊ｂ＊表色系における明度Ｌ＊をＸ−Ｒｉｔｅ社製のＭＡ−６８ＩＩ（商品名）を使用して測定を行ない、正反射光に対して２５度の受光角度で測定した明度Ｌ＊を得た。
実施例１〜６，比較例１〜６
（試験板の作成）
（１） 基材の調整
脱脂及びりん酸亜鉛処理した鋼板（ＪＩＳＧ３１４１、大きさ４００×３００×０．８ｍｍ）にカチオン電着塗料「エレクロン９４００ＨＢ」（商品名：関西ペイント株式会社製、エポキシ樹脂ポリアミン系カチオン樹脂に硬化剤としてブロックポリイソシアネート化合物を使用したもの）を硬化塗膜に基づいて膜厚２０μｍになるように電着塗装し、１７０℃で２０分加熱して架橋硬化させて電着塗膜を得た。
The lightness L * in the L * a * b * color system of the obtained coating film was measured using MA-68II (trade name) manufactured by X-Rite Co., Ltd. The brightness L * measured at the light receiving angle was obtained.
Examples 1-6, Comparative Examples 1-6
(Creation of test plate)
(1) Cationic electrodeposition paint “ELECRON 9400HB” (trade name: manufactured by Kansai Paint Co., Ltd., epoxy resin polyamine) on steel sheet (JISG3141, size 400 × 300 × 0.8 mm) subjected to adjustment degreasing and zinc phosphate treatment of the base material Electrodeposition coating based on the cured coating film to a film thickness of 20 μm, heated at 170 ° C. for 20 minutes to be crosslinked and cured, and electrodeposition coated A membrane was obtained.
得られた電着塗面に、中塗塗料「ルーガベーク中塗りグレー」（商品名：関西ペイント株式会社製、ポリエステル樹脂・メラミン樹脂系、有機溶剤型）をエアスプレーにて硬化塗膜に基づいて膜厚３０μｍになるように塗装し、１４０℃で３０分加熱して架橋硬化させて、中塗塗膜を形成せしめて得られた塗板を基材として用いた。
（２） 塗装
（１）で調整した基材に上記光輝性塗料組成物、着色塗料組成物及びクリヤー塗料を表１に示す構成となるように塗装し、クリヤー塗料を塗装後、室温約２０℃の実験室に約１５分静置し、その後に熱風乾燥機を使用して１４０℃の温度で３０分間乾燥硬化せしめて試験板を作成した。着色塗料組成物の塗料固形分は３５％に予め調整し、電圧−９０Ｋｖ、ガン距離３０ｃｍは共通である。着色塗料組成物を塗装後、室温約２０℃の実験室に約１５分静置し、その後にクリヤー塗料（ル−ガベ−ククリヤ−、関西ペイント製、商品名、アクリル樹脂・アミノ樹脂系、有機溶剤型）をミニベル型回転式静電塗装機を用いて、ブ−ス温度２５℃、湿度７５％の条件で硬化塗膜として、３０μｍとなるように塗装した。
On the obtained electrodeposited surface, an intermediate coating “Lugabake Intermediate Gray” (trade name: manufactured by Kansai Paint Co., Ltd., polyester resin / melamine resin type, organic solvent type) is applied to the film based on the cured coating film by air spray. A coated plate obtained by coating to a thickness of 30 μm and crosslinking and curing by heating at 140 ° C. for 30 minutes was used as a base material.
(2) The above-mentioned glitter paint composition, colored paint composition and clear paint are applied to the base material prepared in the coating (1) so as to have the constitution shown in Table 1, and after applying the clear paint, the room temperature is about 20 ° C. The test plate was prepared by allowing it to stand in the laboratory for about 15 minutes, followed by drying and curing at a temperature of 140 ° C. for 30 minutes using a hot air dryer. The paint solid content of the colored paint composition is previously adjusted to 35%, and the voltage is -90 Kv and the gun distance is 30 cm. After painting the colored paint composition, it is allowed to stand in a laboratory at room temperature of about 20 ° C. for about 15 minutes, and then clear paint (Lugabe Kukuriya, Kansai Paint, trade name, acrylic resin / amino resin system, organic The solvent type) was coated using a mini-bell type rotary electrostatic coating machine so as to be 30 μm as a cured coating film under conditions of a boot temperature of 25 ° C. and a humidity of 75%.
（着色塗料組成物による塗膜の面積）
得られた試験版を、画像スキャナー（ＥＰＳＯＮ社製、商品名：ＧＴ−９７００Ｆ）を用いて、スキャン条件：２４ｂｉｔカラースケール、解像度７２ｄｐｉの条件でスキャンして、データをコンピューターに入力した。その後、各画像について、画像解析ソフトウェア（ＮＩＨ Ｉｍａｇｅ）を用いて着色塗料組成物による塗膜の面積％（画像全体に占める割合）を測定し、結果を表２に示した。
（着色塗料組成物による塗膜：模様の形状）
面積測定時に使用した画像を画像解析ソフトウェア（ＮＩＨ Ｉｍａｇｅ）を用いて着色塗料組成物による塗膜（斑点状）について、各々の楕円の長径を測定し、平均値を表２に示した。
（質感の評価）
作成した塗板を、人工太陽灯（セリック社製、色温度６５００Ｋ）で照明し、試験板の照明に対する角度を変えて観察して、ハイライト（正反射光近傍）の金属感、フェース（ハイライトとシェードの中間）における模様発現を目視にて評価した。評価は、色彩開発に３年以上従事するデザイナー２名と技術者３名の計５名が行ない、平均点を採用し表２に示した。
(Area of paint film by colored paint composition)
The obtained test plate was scanned using an image scanner (manufactured by EPSON, trade name: GT-9700F) under the conditions of scan conditions: 24-bit color scale and resolution of 72 dpi, and data was input to a computer. Thereafter, for each image, the area% of the coating film by the colored coating composition (ratio to the entire image) was measured using image analysis software (NIH Image), and the results are shown in Table 2.
(Coating with colored paint composition: pattern shape)
The image used at the time of area measurement was measured for the major axis of each ellipse with respect to the coating film (spotted) of the colored coating composition using image analysis software (NIH Image), and the average value is shown in Table 2.
(Evaluation of texture)
The prepared coated plate is illuminated with an artificial sun lamp (manufactured by Celic, color temperature 6500K), and is observed by changing the angle with respect to the illumination of the test plate, and the metallic feeling of the highlight (near the regular reflection light), the face (highlight) The pattern expression in the middle of the shade and the shade was visually evaluated. The evaluation was carried out by a total of 5 designers, 3 designers and 3 engineers engaged in color development for more than 3 years.
本発明の塗膜形成方法は、各種工業製品、特に自動車車体の外板に適用できる。 The coating film forming method of the present invention can be applied to various industrial products, particularly to the outer plate of an automobile body.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013169508A (en) * | 2012-02-21 | 2013-09-02 | Kansai Paint Co Ltd | Coating film forming method |
| JP2013169507A (en) * | 2012-02-21 | 2013-09-02 | Kansai Paint Co Ltd | Coating film forming method |
| CN111655386A (en) * | 2018-01-16 | 2020-09-11 | 关西涂料株式会社 | Method for forming multilayer coating film |
| CN113340696A (en) * | 2021-07-20 | 2021-09-03 | 中国航发成都发动机有限公司 | Metallographic detection method for organic hole sealing paint of thermal spraying coating |
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| JPH1043675A (en) * | 1996-08-02 | 1998-02-17 | Toyota Motor Corp | Formation of patterned coating film giving metallic impression |
| JP2003246017A (en) * | 2002-02-26 | 2003-09-02 | Toppan Printing Co Ltd | Decorative sheet |
| JP2007216220A (en) * | 2006-01-23 | 2007-08-30 | Kansai Paint Co Ltd | Dual layer pattern coating forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1043675A (en) * | 1996-08-02 | 1998-02-17 | Toyota Motor Corp | Formation of patterned coating film giving metallic impression |
| JP2003246017A (en) * | 2002-02-26 | 2003-09-02 | Toppan Printing Co Ltd | Decorative sheet |
| JP2007216220A (en) * | 2006-01-23 | 2007-08-30 | Kansai Paint Co Ltd | Dual layer pattern coating forming method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013169508A (en) * | 2012-02-21 | 2013-09-02 | Kansai Paint Co Ltd | Coating film forming method |
| JP2013169507A (en) * | 2012-02-21 | 2013-09-02 | Kansai Paint Co Ltd | Coating film forming method |
| CN111655386A (en) * | 2018-01-16 | 2020-09-11 | 关西涂料株式会社 | Method for forming multilayer coating film |
| CN113340696A (en) * | 2021-07-20 | 2021-09-03 | 中国航发成都发动机有限公司 | Metallographic detection method for organic hole sealing paint of thermal spraying coating |
| CN113340696B (en) * | 2021-07-20 | 2023-05-12 | 中国航发成都发动机有限公司 | Metallographic detection method of organic hole sealing paint for thermal spraying coating |
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