JPH10244221A - Car topcoating method - Google Patents
Car topcoating methodInfo
- Publication number
- JPH10244221A JPH10244221A JP5048997A JP5048997A JPH10244221A JP H10244221 A JPH10244221 A JP H10244221A JP 5048997 A JP5048997 A JP 5048997A JP 5048997 A JP5048997 A JP 5048997A JP H10244221 A JPH10244221 A JP H10244221A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- base paint
- door
- coating
- mica powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、新規な自動車上塗
塗装方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel automobile topcoating method.
【０００２】[0002]
【従来の技術】自動車車体外板部を白〜灰色系着色ベー
ス塗料、酸化チタン被覆雲母粉末含有ベース塗料及びク
リヤー塗料を３コート１ベイク（３Ｃ１Ｂ）方式で塗装
して、ホワイトパール調又はシルバーパール調（以下、
これらを「ホワイトパール調」と総称する）に仕上げる
ことは既知であるが、通常、車体ドア内部はこれらと異
なる色調の塗料が塗装されることが多いために、ドアを
開けたときに外板部のホワイトパール調とのアンバラン
スで外観上好ましくなく、ドア内部も外板部と同様に仕
上げることが可能な塗装方法の開発が要望されている。2. Description of the Related Art A white-grey-colored base paint, a base paint containing mica powder coated with titanium oxide, and a clear paint are coated in a three-coat one-bake (3C1B) method on a vehicle body outer panel to obtain a white pearl or silver pearl. Key (hereafter,
It is known to finish these with "white pearl tone"), however, since paints of different colors are often applied to the inside of the body door, when the door is opened, There is a demand for the development of a coating method that is unfavorable in appearance due to the imbalance with the white pearl tone of the part and that the interior of the door can be finished in the same manner as the outer plate part.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上記
要望が充足され、自動車車体のドア内部にも外板部と同
程度のホワイトパール調に効率よく仕上げることができ
る新規な自動車上塗塗装方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a novel automotive top coat which satisfies the above-mentioned demands and can efficiently finish the interior of a door of an automobile body in the same white pearl tone as the outer plate portion. It is to provide a method.
【０００４】[0004]
【課題を解決するための手段】本発明者は、上記目的を
達成すべく、鋭意研究した結果、自動車車体外板部を上
記３Ｃ１Ｂ方式でホワイトパール調に仕上げるに際し
て、予め車体ドア内部に車体外板部用の着色ベース塗料
と特定の酸化チタン被覆雲母粉末含有ベース塗料とを混
合してなるベース塗料を塗装しておくことによって、該
目的が達成できることを見出し、本発明を完成するに至
った。Means for Solving the Problems The present inventor has conducted intensive studies in order to achieve the above object. As a result, when finishing the outer body portion of an automobile body in a white pearl tone by the above-mentioned 3C1B method, the exterior of the vehicle body was previously installed inside the body door. The present inventors have found that the object can be achieved by applying a base paint obtained by mixing a colored base paint for a plate portion and a base paint containing a specific titanium oxide-coated mica powder, and completed the present invention. .
【０００５】即ち、本発明は、自動車車体の外板部及び
ドア内部の上塗塗装方法であって、外板部をマンセル記
号Ｎ７〜９の白〜灰色系着色ベース塗料（Ａ）、被覆層
の光学的厚さが９０〜１６０ｎｍの酸化チタン被覆雲母
粉末含有ベース塗料（Ｂ）及びクリヤー塗料（Ｃ）を３
コート１ベイク方式で塗装するに際して、ドア内部に該
着色ベース塗料（Ａ）と該雲母粉末含有ベース塗料
（Ｂ）とを混合してなるベース塗料（Ｄ）を塗装し、次
いで外板部に該着色ベース塗料（Ａ）及び該雲母粉末含
有ベース塗料（Ｂ）を順次塗装した後、外板部及びドア
内部にクリヤー塗料（Ｃ）を塗装し、これらの塗膜を同
時に加熱硬化することを特徴とする自動車上塗塗装方法
に係る。That is, the present invention relates to a method for topcoating an outer plate portion and a door inside an automobile body, wherein the outer plate portion is made of a white-grey base paint (A) having a Munsell symbol N7-9 and a coating layer. A base paint (B) containing titanium oxide-coated mica powder having an optical thickness of 90 to 160 nm and a clear paint (C)
When coating by the coat 1 bake method, a base paint (D) obtained by mixing the colored base paint (A) and the mica powder-containing base paint (B) is applied to the inside of the door, and then the outer panel is coated with the base paint (D). After sequentially applying the colored base paint (A) and the mica powder-containing base paint (B), the clear paint (C) is applied to the outer panel and the inside of the door, and these coatings are simultaneously heated and cured. Pertaining to an automotive topcoating method.
【０００６】上記本発明方法は、自動車車体の外板部及
びドア内部を同程度のホワイトパール調に簡素化された
工程で、効率よく仕上げることができる塗装方法であ
る。The method of the present invention is a coating method capable of efficiently finishing the outer plate portion and the inside of a door of a vehicle body in a similar process with a similar white pearl tone.
【０００７】[0007]
【発明の実施の形態】本発明塗装方法は、自動車車体ド
ア内部に上記ベース塗料（Ｄ）を塗装し、次いで外板部
に上記ベース塗料（Ａ）及び（Ｂ）を順次塗装後、外板
部及びドア内部にクリヤー塗料（Ｃ）を塗装し、これら
の塗膜を同時に加熱硬化するものである。つまり、外板
部には塗料（Ａ）、塗料（Ｂ）及び塗料（Ｃ）を、ドア
内部には塗料（Ｄ）及び塗料（Ｃ）をそれぞれウエット
オンウエットで塗装したのち、これらの塗膜を同時に加
熱硬化させるものである。従って、車体外板部は３Ｃ１
Ｂ方式により、又ドア内部は２Ｃ１Ｂ方式により塗装す
ることになる。BEST MODE FOR CARRYING OUT THE INVENTION The coating method of the present invention is to apply the base paint (D) to the inside of a vehicle body door, and then apply the base paints (A) and (B) to an outer plate portion sequentially, The clear paint (C) is applied to the part and the inside of the door, and these coatings are simultaneously heated and cured. That is, paint (A), paint (B) and paint (C) are applied to the outer plate, and paint (D) and paint (C) are applied to the inside of the door by wet-on-wet, respectively. Are simultaneously cured by heating. Therefore, the vehicle body outer panel is 3C1
The inside of the door will be painted by the 2C1B system and the inside of the door will be painted by the 2C1B system.
【０００８】本発明塗装方法の被塗物である自動車車体
のうち、外板部は、ドアを閉めた状態で車体の外側に位
置している部分であり、例えばボンネットフード、ルー
フ、トランクリッド、フェンダー、バンパー、ドア外側
等が挙げられる。また、自動車車体のドア内部は、ドア
外側以外のドア周辺部であり、換言すれば、ドアを開け
たときに見えるドアの内回り部分であり、例えばドア側
部やステップ部等が挙げられる。[0008] In the vehicle body to be coated in the coating method of the present invention, the outer plate portion is a portion which is located outside the vehicle body with the door closed, and includes, for example, a hood, a roof, a trunk lid, Fenders, bumpers, door exteriors, and the like. Further, the inside of the door of the vehicle body is a peripheral portion of the door other than the outside of the door, in other words, an inner peripheral portion of the door that is visible when the door is opened, such as a door side portion and a step portion.
【０００９】上記自動車車体の外板部及びドア内部の材
質は、通常、鋼板、プラスチック（ポリオレフィン、ポ
リウレタン等）等であるが、これらのいずれであっても
良い。The material of the outer plate portion and the inside of the door of the automobile body is usually a steel plate, plastic (polyolefin, polyurethane, etc.), but any of these materials may be used.
【００１０】また、本発明塗装方法の実施に先立ち、被
塗物である車体外板部及びドア内部は、予めカチオン電
着塗料等の下塗塗料及び中塗塗料等を塗装し、その塗膜
を硬化しておくことが好ましい。Prior to the application of the coating method of the present invention, an undercoat or an intermediate paint such as a cationic electrodeposition paint is applied to the outer body of the vehicle body and the interior of the door, which are objects to be coated, and the coating is cured. It is preferable to keep it.
【００１１】本発明方法においては、車体外板部に該着
色ベース塗料（Ａ）を塗装する前に、ドア内部に該着色
ベース塗料（Ａ）と酸化チタン被覆雲母粉末含有ベース
塗料（Ｂ）とを混合してなるベース塗料（Ｄ）を予め塗
装しておくことが必須要件である。In the method of the present invention, before the colored base paint (A) is applied to the outer panel of the vehicle body, the colored base paint (A) and the titanium oxide-coated mica powder-containing base paint (B) are placed inside the door. It is an essential requirement that a base paint (D) obtained by mixing the above is applied beforehand.
【００１２】着色ベース塗料（Ａ）は、酸化チタン被覆
雲母粉末含有ベース塗料（Ｂ）に先立って、自動車車体
外板部に塗装する塗料であって、基体樹脂、架橋剤、黒
色顔料、白色顔料及び有機溶剤を必須成分として含有す
る有機溶剤系液状塗料であって、マンセル記号Ｎ７〜９
の白〜灰色系塗膜を形成するものである。The colored base paint (A) is a paint to be applied to the outer body of an automobile body prior to the base paint containing mica powder coated with titanium oxide (B), and includes a base resin, a crosslinking agent, a black pigment, and a white pigment. And an organic solvent-based liquid paint containing an organic solvent as an essential component, and a Munsell symbol N7-9
To form a white to gray-based coating film.
【００１３】基体樹脂としては、例えば、水酸基、カル
ボキシル基、エポキシ基等の官能基を有するアクリル樹
脂、ポリエステル樹脂、アルキド樹脂等を挙げることが
できる。また、架橋剤としては、例えば、基体樹脂中の
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、カルボキシル基含有化合物等を挙げることができ
る。基体樹脂と架橋剤との比率は、該両成分の合計重量
を基準に、基体樹脂は５０〜９０重量％、特に６０〜８
０重量％、架橋剤は５０〜１０重量％、特に４０〜２０
重量％が適している。Examples of the base resin include an acrylic resin, a polyester resin, and an alkyd resin having a functional group such as a hydroxyl group, a carboxyl group, and an epoxy group. Examples of the crosslinking agent include a melamine resin, a urea resin, a polyisocyanate compound, a block polyisocyanate compound, and a carboxyl group-containing compound that can react with a functional group in the base resin. The ratio of the base resin to the crosslinking agent is 50 to 90% by weight, particularly 60 to 8% by weight, based on the total weight of the two components.
0% by weight, 50 to 10% by weight of crosslinking agent, especially 40 to 20%
% By weight is suitable.
【００１４】黒色顔料は、カーボンブラック、黒鉛等、
白色顔料は二酸化チタン等が適している。これらの両顔
料の比率は、着色ベース塗料（Ａ）塗膜の明度がマンセ
ル記号でＮ７〜９の白〜灰色系になるような範囲内であ
ればよく、例えば白色顔料１００重量部あたり、黒色顔
料は０．１〜２重量部が適している。また、これらの黒
色顔料及び白色顔料は、合計で、塗料中の基体樹脂と架
橋剤との合計固形分１００重量部当たり１〜１５０重量
部程度配合するのが適している。また、該塗料（Ａ）に
は、有彩色顔料、メタリック顔料、体質顔料等を、必要
に応じて、マンセル記号でＮ７〜９の範囲内において若
干量を配合することができる。Black pigments include carbon black, graphite, etc.
As the white pigment, titanium dioxide or the like is suitable. The ratio of these two pigments may be within a range such that the lightness of the coating film of the colored base paint (A) is a white to gray system of N7 to N9 by Munsell symbol. The pigment is suitably used in an amount of 0.1 to 2 parts by weight. In addition, these black pigments and white pigments are suitably combined in a total amount of about 1 to 150 parts by weight per 100 parts by weight of the total solid content of the base resin and the crosslinking agent in the paint. The paint (A) may contain a small amount of a chromatic pigment, a metallic pigment, an extender pigment or the like within a range of N7 to N9 by the Munsell symbol, if necessary.
【００１５】有機溶剤は、上記基体樹脂、架橋剤及び各
顔料を混合して溶解乃至分散するものであればよく、例
えば、炭化水素系、エステル系、エーテル系、アルコー
ル系、ケトン系等の通常の塗料用溶剤が使用できる。The organic solvent is not particularly limited as long as it dissolves or disperses the above-mentioned base resin, cross-linking agent and each pigment by mixing them. Can be used.
【００１６】着色ベース塗料（Ａ）は、上記基体樹脂、
架橋剤、黒色顔料及び白色顔料等の顔料を有機溶剤に常
法により混合して溶解乃至分散せしめることによって調
製でき、明度がマンセル記号Ｎ７〜９の白〜灰色系塗膜
を形成するものであり、酸化チタン被覆雲母粉末含有ベ
ース塗料（Ｂ）に先立って外板部に塗装する。The colored base paint (A) comprises the above-mentioned base resin,
It can be prepared by mixing and dissolving or dispersing a crosslinking agent, a pigment such as a black pigment and a white pigment in an organic solvent by an ordinary method, and forms a white-gray coating film having a lightness of Munsell symbol N7-9. Prior to the base coating (B) containing mica powder coated with titanium oxide, the outer plate is applied.
【００１７】酸化チタン被覆雲母粉末含有ベース塗料
（Ｂ）は、外板部の着色ベース塗料（Ａ）の未硬化塗面
に塗装する塗料であって、基体樹脂、架橋剤、特定の酸
化チタン被覆雲母粉末及び有機溶剤を必須成分として含
有し、着色ベース塗料（Ａ）と相俟ってホワイトパール
調塗膜を形成するものである。The titanium oxide-coated mica powder-containing base coating (B) is a coating applied to the uncured coating surface of the colored base coating (A) on the outer plate, and includes a base resin, a crosslinking agent, and a specific titanium oxide coating. It contains mica powder and an organic solvent as essential components, and forms a white pearly coating film in combination with the colored base coating material (A).
【００１８】これらの基体樹脂、架橋剤及び有機溶剤と
しては、上記着色ベース塗料（Ａ）で例示したものが適
している。また、これらの各成分の配合量も、該塗料
（Ａ）における配合量の範囲が適している。As the base resin, crosslinking agent and organic solvent, those exemplified for the above-mentioned colored base coating material (A) are suitable. Also, the compounding amounts of these components are suitably in the range of the compounding amounts in the paint (A).
【００１９】ベース塗料（Ｂ）で用いる酸化チタン被覆
雲母粉末は、雲母粉末の表面を酸化チタンで被覆したり
ん片状顔料であり、その酸化チタン被覆層の厚さが光学
的厚さを基準に９０〜１６０ｎｍのものであり、ホワイ
トマイカ又はシルバーマイカとも称されている。また、
この酸化チタン被覆雲母粉末は、干渉色を殆ど呈するこ
とがなく、干渉色を呈する酸化チタン被覆雲母粉末であ
る干渉マイカ粉末とは区別されている。The titanium oxide-coated mica powder used in the base paint (B) is a flaky pigment in which the surface of the mica powder is coated with titanium oxide, and the thickness of the titanium oxide-coated layer is based on the optical thickness. It has a thickness of 90 to 160 nm and is also called white mica or silver mica. Also,
This titanium oxide-coated mica powder has almost no interference color, and is distinguished from interference mica powder, which is a titanium oxide-coated mica powder that exhibits interference colors.
【００２０】該酸化チタン被覆雲母粉末の大きさは、通
常、長手方向が５〜６０μｍ、特に５〜２５μｍ、厚さ
が０．２５〜１．５μｍ、特に０．５〜１μｍが、好ま
しい。また、その酸化チタン被覆層の厚さは光学的厚さ
を基準に９０〜１６０ｎｍであるが、幾何学的厚さを基
準に４０〜７０ｎｍであることが好ましい。The size of the titanium oxide-coated mica powder is preferably 5 to 60 μm, particularly 5 to 25 μm in the longitudinal direction, and 0.25 to 1.5 μm, particularly 0.5 to 1 μm in thickness. The thickness of the titanium oxide coating layer is 90 to 160 nm based on the optical thickness, but is preferably 40 to 70 nm based on the geometric thickness.
【００２１】該酸化チタン被覆雲母粉末の配合量は、基
体樹脂と架橋剤の合計固形分１００重量部当たり、３〜
２０重量部、特に７〜１３重量部の比率であることが好
ましい。また、該塗料（Ｂ）には上記顔料成分に加え
て、さらに、アルミニウム粉末、干渉マイカ粉末等を適
宜配合することができる。The mixing amount of the titanium oxide-coated mica powder is 3 to 3 parts by weight per 100 parts by weight of the total solid content of the base resin and the crosslinking agent.
The ratio is preferably 20 parts by weight, particularly preferably 7 to 13 parts by weight. In addition, in addition to the above-mentioned pigment components, aluminum powder, interference mica powder, and the like can be appropriately added to the paint (B).
【００２２】酸化チタン被覆雲母粉末含有ベース塗料
（Ｂ）は、上記基体樹脂、架橋剤及び酸化チタン被覆雲
母粉末を有機溶剤に常法により混合して溶解乃至分散せ
しめることによって調製でき、その単独塗膜は半透明の
乳白色の色調で、該粉末による光干渉作用は全く又は殆
ど認められない。The base coating (B) containing mica powder coated with titanium oxide can be prepared by mixing and dissolving or dispersing the above-mentioned base resin, crosslinking agent and mica powder coated with titanium oxide in an organic solvent by a conventional method. The film has a translucent milky shade and no or little light interference by the powder is observed.
【００２３】ベース塗料（Ｄ）は、外板部にマンセル記
号Ｎ７〜９の白〜灰色系着色ベース塗料（Ａ）を塗装す
る前に、予めドア内部に塗装する塗料であり、マンセル
記号Ｎ７〜９の白〜灰色系着色ベース塗料（Ａ）と酸化
チタン被覆雲母粉末含有ベース塗料（Ｂ）とを混合する
ことにより調製できる。両塗料の混合比率は、両塗料に
含まれる着色顔料（酸化チタン被覆雲母粉末、メタリッ
ク顔料等も含む）の合計重量を基準に、着色ベース塗料
（Ａ）は３０〜７０重量％、酸化チタン被覆雲母粉末含
有ベース塗料（Ｂ）は７０〜３０重量％が適している。
該両塗料を混合してなるベース塗料（Ｄ）により形成さ
れる塗膜は、着色ベース塗料（Ａ）及び酸化チタン被覆
雲母粉末含有ベース塗料（Ｂ）を順次塗装してなる複層
塗膜の外観とほぼ近似しているので、かかるベース塗料
（Ｄ）を使用することによりドア内部の塗装工程を短縮
できたことになる。The base paint (D) is a paint which is applied to the inside of the door in advance before applying the white-grey colored base paint (A) having the Munsell symbol N7-9 on the outer plate portion. 9 can be prepared by mixing the white-grey colored base paint (A) and the titanium oxide-coated mica powder-containing base paint (B). The mixing ratio of both paints is based on the total weight of the color pigments (including titanium oxide-coated mica powder, metallic pigments, etc.) contained in both paints. The content of the mica powder-containing base paint (B) is suitably from 70 to 30% by weight.
The coating film formed by the base coating material (D) obtained by mixing the two coating materials is a multilayer coating film obtained by sequentially applying a colored base coating material (A) and a base coating material containing titanium oxide-coated mica powder (B). Since the appearance is almost similar, the use of the base paint (D) shortens the painting process inside the door.
【００２４】クリヤー塗料（Ｃ）は、車体の外板部及び
ドア内部のベース塗料（Ｂ）の未硬化塗面及びベース塗
料（Ｄ）の未硬化塗面に塗装する塗料であり、基体樹
脂、架橋剤及び有機溶剤を必須成分として含有し、透明
塗膜を形成するものである。これらの基体樹脂、架橋剤
及び有機溶剤としては、ベース塗料（Ａ）で例示したも
のが適している。また、これらの各成分の配合量も、ベ
ース塗料（Ａ）における配合量の範囲が適している。The clear paint (C) is a paint to be applied to the uncured paint surface of the base paint (B) and the uncured paint surface of the base paint (D) inside the outer panel of the vehicle body and inside the door. It contains a crosslinking agent and an organic solvent as essential components and forms a transparent coating film. As the base resin, crosslinking agent and organic solvent, those exemplified for the base coating material (A) are suitable. The compounding amounts of these components are also preferably in the range of the compounding amounts in the base paint (A).
【００２５】クリヤー塗料（Ｃ）は、上記基体樹脂及び
架橋剤を有機溶剤に常法により混合して溶解乃至分散せ
しめることによって調製できる。The clear paint (C) can be prepared by mixing the above-mentioned base resin and crosslinking agent in an organic solvent by a conventional method and dissolving or dispersing the same.
【００２６】本発明方法は、車体ドア内部にベース塗料
（Ｄ）を塗装し、ついで外板部に白〜灰色系着色ベース
塗料（Ａ）及び酸化チタン被覆雲母粉末含有ベース塗料
（Ｂ）を塗装してから、外板部及びドア内部にクリヤー
塗料（Ｃ）を塗装した後、加熱してこれらの塗膜を同時
に硬化せしめることからなっている。つまり、外板部は
３Ｃ１Ｂ方式の塗装、ドア内部は２Ｃ１Ｂ方式の塗装で
ある。According to the method of the present invention, a base paint (D) is applied to the inside of a vehicle body door, and then a white-grey colored base paint (A) and a base paint containing titanium oxide-coated mica powder (B) are applied to the outer panel. After that, a clear paint (C) is applied to the outer plate portion and the inside of the door, and then heated to simultaneously cure these coating films. That is, the outer plate portion is painted by the 3C1B method, and the inside of the door is painted by the 2C1B method.
【００２７】ドア内部へのベース塗料（Ｄ）の塗装は、
静電方式、スプレー方式等により手動又は自動塗装機
（ロボット等）等で行う。ベース塗料（Ｄ）の塗装時の
固形分含有率を１０〜６０重量％、粘度を１０〜５０秒
（フォードカップ＃４／２０℃）に調整し、ドア内部
に、塗装膜厚が硬化塗膜で５〜４０μｍになるように塗
装し、室温で１〜２０分放置してから、外板部に着色ベ
ース塗料（Ａ）を塗装する。The coating of the base paint (D) inside the door is as follows.
It is performed manually or by an automatic coating machine (robot or the like) by an electrostatic method, a spray method, or the like. The base paint (D) was adjusted to have a solid content of 10 to 60% by weight and a viscosity of 10 to 50 seconds (Ford cup # 4/20 ° C.) at the time of application, and the coating film was hardened inside the door. And leave it at room temperature for 1 to 20 minutes, and then apply a colored base paint (A) to the outer plate.
【００２８】外板部への着色ベース塗料（Ａ）の塗装
は、該塗料（Ａ）の塗装時の固形分含有率を１０〜６０
重量％、粘度を１０〜５０秒（フォードカップ＃４／２
０℃）に調整し、静電方式、スプレー方式等により自動
塗装機で塗装することが好ましい。塗装膜厚は硬化塗膜
で５〜４０μｍが好ましく、室温で１〜２０分放置して
から、該未硬化塗面（外板部）に酸化チタン被覆雲母粉
末含有ベース塗料（Ｂ）を塗装する。The coating of the colored base coating material (A) on the outer panel is carried out at a solid content of 10 to 60 when the coating material (A) is applied.
% By weight, viscosity for 10 to 50 seconds (Ford Cup # 4/2
0 ° C.), and it is preferable to apply an automatic coating machine by an electrostatic method, a spray method or the like. The thickness of the coating film is preferably 5 to 40 μm as a cured coating film, and after leaving at room temperature for 1 to 20 minutes, the titanium oxide-coated mica powder-containing base coating material (B) is applied to the uncured coating surface (outer plate portion). .
【００２９】該ベース塗料（Ｂ）は、塗装時の固形分含
有率を１０〜６０重量％、粘度を１０〜５０秒（フォー
ドカップ＃４／２０℃）に調整し、静電方式、スプレー
方式等により通常自動塗装機で、外板部の着色ベース塗
料（Ａ）の未硬化塗面に塗装する。塗装膜厚は硬化塗膜
で５〜４０μｍが適している。塗装後、室温で１〜２０
分放置する。The base paint (B) is adjusted to have a solid content of 10 to 60% by weight at the time of coating and a viscosity of 10 to 50 seconds (Ford cup # 4/20 ° C.), and is electrostatically sprayed and sprayed. The uncured coating surface of the colored base coating material (A) on the outer plate is usually applied by an automatic coating machine by the method described above. The film thickness of the cured film is suitably from 5 to 40 μm. After painting, 1-20 at room temperature
Leave for a minute.
【００３０】ついで、外板部の酸化チタン被覆雲母粉末
含有ベース塗料（Ｂ）の未硬化塗面及びドア内部のベー
ス塗料（Ｄ）の未硬化塗面に、クリヤー塗料（Ｃ）を塗
装する。Next, a clear paint (C) is applied to the uncured coated surface of the titanium oxide-coated mica powder-containing base paint (B) on the outer panel and the uncured coated surface of the base paint (D) inside the door.
【００３１】クリヤー塗料（Ｃ）は、外板部及びドア内
部の上記の未硬化塗面に静電方式、スプレー方式等で塗
装することが好ましい。具体的には、塗装時の固形分含
有率を１０〜６０重量％、粘度を１０〜５０秒（フォー
ドカップ＃４／２０℃）に調整し、膜厚が硬化塗膜で１
０〜６０μｍになるように塗装することが適している。The clear coating (C) is preferably applied to the uncured coating surface of the outer panel and the inside of the door by an electrostatic method, a spray method, or the like. Specifically, the solid content at the time of coating was adjusted to 10 to 60% by weight, and the viscosity was adjusted to 10 to 50 seconds (Ford cup # 4/20 ° C).
It is suitable to apply the coating so as to have a thickness of 0 to 60 μm.
【００３２】このように、外板部には塗料（Ａ）、塗料
（Ｂ）及び塗料（Ｃ）を、ドア内部には塗料（Ｄ）及び
塗料（Ｃ）をそれぞれウエットオンウエットで塗装した
のち、１００〜１６０℃で１０〜４０分加熱してこれら
の塗膜を同時に硬化させることにより、本発明方法が達
成される。通常、本発明方法は、外板部は自動塗装機に
より３Ｃ１Ｂ方式により、ドア内部は塗装作業者による
手動で２Ｃ１Ｂ方式により塗装することになる。As described above, the paint (A), the paint (B) and the paint (C) are applied to the outer plate, and the paint (D) and the paint (C) are applied to the inside of the door by wet-on-wet. The method of the present invention is accomplished by simultaneously curing these coatings by heating at 100-160 ° C for 10-40 minutes. Normally, in the method of the present invention, the outer plate portion is painted by an automatic painting machine by the 3C1B method, and the inside of the door is painted by the painting operator manually by the 2C1B method.
【００３３】[0033]
【実施例】以下に、製造例及び実施例を挙げて、本発明
を更に具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Production Examples and Examples.
【００３４】製造例１ 被塗物の調製 自動車用鋼板（大きさ１００×１５０×０．８ｍｍ）
に、カチオン電着塗料（「エレクロン９８００」、関西
ペイント（株）製、商品名、ポリアミン変性エポキシ樹
脂−ブロックポリイソシアネート系水性型塗料）を塗装
し加熱硬化した。次いで、中塗塗料（「ルーガベークＴ
Ｐ−３７」、関西ペイント（株）製、商品名、ポリエス
テル樹脂−メラミン樹脂系有機溶剤型塗料）を塗装し、
加熱硬化して被塗物を得た。Production Example 1 Preparation of Coating Material Steel Plate for Automobile (Size 100 × 150 × 0.8 mm)
Then, a cationic electrodeposition paint (“ELECRON 9800”, manufactured by Kansai Paint Co., Ltd., trade name, polyamine-modified epoxy resin-blocked polyisocyanate-based water-based paint) was applied and cured by heating. Next, an intermediate coating ("Luga Bake T
P-37 ", manufactured by Kansai Paint Co., Ltd., trade name, polyester resin-melamine resin organic solvent type paint),
Heat-curing was performed to obtain a coated object.
【００３５】得られた被塗物の塗装面を外側にして折り
曲げて、一方の塗装面を外板部、もう一方の塗装面をド
ア内部とした。The object to be coated was bent with the coated surface facing outward, and one coated surface was defined as an outer plate portion and the other coated surface was defined as a door interior.
【００３６】製造例２ 白〜灰色系着色ベース塗料（Ａ
−１）の調製 水酸基含有アクリル樹脂（数平均分子量１３，０００、
水酸基価６０ｍｇＫＯＨ／ｇ、酸価４ｍｇＫＯＨ／ｇ）
７５重量部、「ユーバン２０ＳＥ」（メチル・ブチル混
合エーテル化メラミン樹脂、三井東圧社製、商品名）２
５重量部（固形分）、チタン白顔料１００重量部及びカ
ーボンブラック０．１重量部を、酢酸エチル／トルエン
／ソルベッソ１５０（炭化水素系溶剤、コスモ石油
（株）製、商品名）＝５０／３０／２０（重量比）から
なる混合溶剤に混合分散し、塗装時の固形分含有率を４
０重量％、粘度を３０秒（フォードカップ＃４／２０
℃）に調整して外板部用のマンセル記号Ｎ９の白〜灰色
系着色ベース塗料（Ａ−１）を得た。Production Example 2 White-gray-based colored base paint (A
Preparation of -1) Hydroxyl group-containing acrylic resin (number average molecular weight 13,000,
(Hydroxyl value 60mgKOH / g, acid value 4mgKOH / g)
75 parts by weight, "Uban 20SE" (Methyl / butyl mixed etherified melamine resin, manufactured by Mitsui Toatsu Co., trade name) 2
5 parts by weight (solid content), 100 parts by weight of titanium white pigment and 0.1 part by weight of carbon black were mixed with ethyl acetate / toluene / solvesso 150 (hydrocarbon solvent, Cosmo Oil Co., Ltd., trade name) = 50 / 30/20 (weight ratio) in a mixed solvent, and the solid content at the time of coating was 4%.
0% by weight, viscosity for 30 seconds (Ford Cup # 4/20
° C) to obtain a white-grey colored base paint (A-1) having a Munsell symbol N9 for the outer plate portion.
【００３７】製造例３ 酸化チタン被覆雲母粉末含有ベ
ース塗料（Ｂ−１）の調製 水酸基含有アクリル樹脂（数平均分子量１０，０００、
水酸基価７０ｍｇＫＯＨ／ｇ、酸価５ｍｇＫＯＨ／ｇ）
７５重量部、「ユーバン２０ＳＥ」（メチル・ブチル混
合エーテル化メラミン樹脂、三井東圧社製、商品名）２
５重量部（固形分）、酸化チタン被覆りん片状雲母粉末
（長手方向５〜２５μｍ、厚さ０．５〜１μｍ、酸化チ
タン被覆層の厚さは光学的厚さを基準に９０〜１６０ｎ
ｍ、幾何学的厚さを基準に４０〜７０ｎｍ）１２重量部
を、酢酸エチル／トルエン／ソルベッソ１５０＝５０／
３０／２０（重量比）からなる混合溶剤に混合分散し、
塗装時の固形分含有率を４０重量％、粘度を３０秒（フ
ォードカップ＃４／２０℃）に調整して外板部用の酸化
チタン被覆雲母粉末含有ベース塗料（Ｂ−１）を得た。Production Example 3 Preparation of base paint (B-1) containing mica powder coated with titanium oxide Hydroxyl-containing acrylic resin (number-average molecular weight 10,000,
(Hydroxyl value 70mgKOH / g, acid value 5mgKOH / g)
75 parts by weight, "Uban 20SE" (Methyl / butyl mixed etherified melamine resin, manufactured by Mitsui Toatsu Co., trade name) 2
5 parts by weight (solid content), flaky mica powder coated with titanium oxide (length: 5 to 25 μm, thickness: 0.5 to 1 μm, thickness of titanium oxide coated layer: 90 to 160 n based on optical thickness)
m, 40-70 nm based on geometric thickness) 12 parts by weight of ethyl acetate / toluene / solvesso 150 = 50 /
30/20 (weight ratio) mixed and dispersed in a mixed solvent,
The solid content at the time of coating was adjusted to 40% by weight, and the viscosity was adjusted to 30 seconds (Ford cup # 4/20 ° C) to obtain a base coating material (B-1) containing titanium oxide-coated mica powder for an outer plate portion. .
【００３８】製造例４ クリヤー塗料（Ｃ−１）の調製 水酸基含有アクリル樹脂（数平均分子量１７，０００、
水酸基価１００ｍｇＫＯＨ／ｇ、酸価５ｍｇＫＯＨ／
ｇ）８０重量部（固形分）及び「ユーバン２０ＳＥ」２
０重量部（固形分）を、酢酸エチル／ソルベッソ１００
（炭化水素系溶剤、コスモ石油（株）製、商品名）＝５
０／５０（重量比）からなる混合溶剤に混合溶解し、塗
装時固形分含有率４５重量％、粘度２０秒（フォードカ
ップ＃４／２０℃）に調整して外板部及びドア内部用の
クリヤー塗料（Ｃ−１）を得た。Production Example 4 Preparation of Clear Coating (C-1) Hydroxyl group-containing acrylic resin (number average molecular weight 17,000,
Hydroxyl value 100mgKOH / g, acid value 5mgKOH / g
g) 80 parts by weight (solid content) and "Uban 20SE" 2
0 parts by weight (solid content) was added to ethyl acetate / solvesso 100
(Hydrocarbon solvent, Cosmo Oil Co., Ltd., trade name) = 5
0/50 (weight ratio) mixed and dissolved in a mixed solvent having a solid content of 45% by weight and a viscosity of 20 seconds (Ford cup # 4/20 ° C.) at the time of coating. A clear paint (C-1) was obtained.
【００３９】製造例５ ベース塗料（Ｄ−１）の調製 上記白〜灰色系着色ベース塗料（Ａ−１）及び酸化チタ
ン被覆雲母粉末含有ベース塗料（Ｂ−１）を着色顔料重
量比で５０／５０になるように混合して、塗装時の固形
分含有率を４０重量％、粘度を３０秒（フォードカップ
＃４／２０℃）に調整し、ドア内部用のベース塗料（Ｄ
−１）を得た。Production Example 5 Preparation of Base Paint (D-1) The white-grey colored base paint (A-1) and the titanium oxide-coated mica powder-containing base paint (B-1) were prepared at a color pigment weight ratio of 50/50. The mixture was adjusted to 50 to adjust the solid content at the time of coating to 40% by weight and the viscosity to 30 seconds (Ford cup # 4/20 ° C.).
-1) was obtained.
【００４０】実施例１ 製造例１で得た被塗物のドア内部に、ベース塗料（Ｄ−
１）を硬化塗膜で３０μｍの膜厚になるようにエアース
プレーで塗装し、室温で５分放置した。次いで、外板部
に、着色ベース塗料（Ａ−１）を硬化塗膜で１５μｍの
膜厚になるようにエアースプレーで塗装し室温で５分放
置し、続いて酸化チタン被覆雲母粉末含有ベース塗料
（Ｂ−１）を硬化塗膜で１５μｍの膜厚になるようにエ
アースプレーで塗装し室温で５分放置した。更に、クリ
ヤー塗料（Ｃ−１）を硬化塗膜で４０μｍの膜厚になる
ように外板部及びドア内部にエアースプレーで塗装し、
室温で５分放置してから、ベース塗料（Ｄ−１）、着色
ベース塗料（Ａ−１）、酸化チタン被覆雲母粉末含有ベ
ース塗料（Ｂ−１）及びクリヤー塗料（Ｃ−１）の各塗
膜を１４０℃で３０分加熱して同時に硬化させた。Example 1 A base paint (D-
1) was applied on the cured coating film by air spray so as to have a thickness of 30 μm, and left at room temperature for 5 minutes. Next, a colored base paint (A-1) is applied to the outer plate portion by air spray so as to have a thickness of 15 μm as a cured coating film, and left at room temperature for 5 minutes. (B-1) was applied to the cured coating film by air spray so as to have a thickness of 15 μm, and was left at room temperature for 5 minutes. Further, the clear paint (C-1) is applied to the outer plate and the inside of the door by air spray so as to have a thickness of 40 μm with the cured coating film,
After leaving at room temperature for 5 minutes, each coating of base paint (D-1), colored base paint (A-1), titanium oxide-coated mica powder-containing base paint (B-1) and clear paint (C-1) The film was heated at 140 ° C. for 30 minutes and simultaneously cured.
【００４１】得られた被塗物の外板部とドア内部の塗面
は、ほぼ同程度のホワイトパール調を示し、仕上り外観
等は殆ど差がなく良好であった。The coated surface of the outer plate portion and the inside of the door of the obtained article to be coated exhibited almost the same white pearl tone, and the finished appearance and the like were almost the same and excellent.
【００４２】[0042]
【発明の効果】本発明塗装方法によれば、次のような効
果が得られる。According to the coating method of the present invention, the following effects can be obtained.
【００４３】（１）車体ドア内部に塗料（Ｄ）及び塗料
（Ｃ）を塗装してなる２層塗膜は、外板部の塗料
（Ａ）、塗料（Ｂ）及び塗料（Ｃ）からなる３層塗膜の
ホワイトパール調とほぼ同程度のホワイトパール調であ
り、外板部とドア内部の色調のアンバランスによる外観
低下は解消された。(1) The two-layer coating film formed by coating the paint (D) and the paint (C) inside the vehicle body door is composed of the paint (A), the paint (B) and the paint (C) on the outer plate portion. The white pearl tone was almost the same as the white pearl tone of the three-layer coating film, and the appearance deterioration due to the unbalance of the color tone between the outer panel and the door was eliminated.
【００４４】（２）ドア内部の塗装を２Ｃ１Ｂ方式で行
えるので工程が短縮されており、全体として、自動車車
体の外板部及びドア内部を同程度のホワイトパール調に
簡素化された工程で、効率よく仕上げることができる。(2) Since the inside of the door can be painted by the 2C1B method, the process is shortened. As a whole, the outer plate portion of the car body and the inside of the door are simplified in the same white pearl tone. It can be finished efficiently.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 茂 愛知県西加茂郡三好町大字莇生字平地１番 地 関西ペイント株式会社内 (72)発明者 中尾 泰志 愛知県西加茂郡三好町大字莇生字平地１番 地 関西ペイント株式会社内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeru Nakamura No. 1 in Azaji, Hiyoshi, Miyoshi-cho, Nishikamo-gun, Aichi Prefecture Kansai Paint Co., Ltd. (72) Inventor Yasushi Nakao Yasushi, Hirai 1 in Miyoshi-cho, Nishikamo-gun, Aichi Address Kansai Paint Co., Ltd.
Claims (1)
装方法であって、外板部をマンセル記号Ｎ７〜９の白〜
灰色系着色ベース塗料（Ａ）、被覆層の光学的厚さが９
０〜１６０ｎｍの酸化チタン被覆雲母粉末含有ベース塗
料（Ｂ）及びクリヤー塗料（Ｃ）を３コート１ベイク方
式で塗装するに際して、ドア内部に該着色ベース塗料
（Ａ）と該雲母粉末含有ベース塗料（Ｂ）とを混合して
なるベース塗料（Ｄ）を塗装し、次いで外板部に該着色
ベース塗料（Ａ）及び該雲母粉末含有ベース塗料（Ｂ）
を順次塗装した後、外板部及びドア内部にクリヤー塗料
（Ｃ）を塗装し、これらの塗膜を同時に加熱硬化するこ
とを特徴とする自動車上塗塗装方法。1. A method for topcoating an outer panel portion of a vehicle body and a door, wherein the outer panel portion is formed of Munsell symbols N7 to N9.
Gray colored base paint (A), optical thickness of coating layer is 9
When the base paint containing titanium oxide-coated mica powder (B) and the clear paint (C) having a thickness of 0 to 160 nm are applied in a three-coat one-bake system, the colored base paint (A) and the base paint containing mica powder ( B) and a base paint (D) obtained by mixing the base paint (B) with the colored base paint (A) and the mica powder-containing base paint (B).
, A clear paint (C) is applied to the outer plate and the inside of the door, and these coatings are simultaneously heated and cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05048997A JP3783090B2 (en) | 1997-03-05 | 1997-03-05 | Car overcoating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05048997A JP3783090B2 (en) | 1997-03-05 | 1997-03-05 | Car overcoating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10244221A true JPH10244221A (en) | 1998-09-14 |
| JP3783090B2 JP3783090B2 (en) | 2006-06-07 |
Family
ID=12860345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05048997A Expired - Fee Related JP3783090B2 (en) | 1997-03-05 | 1997-03-05 | Car overcoating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3783090B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100347723B1 (en) * | 1999-09-30 | 2002-08-09 | 대우자동차 주식회사 | Vehicles White Perl Color Coating Paint |
| KR20020084434A (en) * | 2001-05-02 | 2002-11-09 | 현대자동차주식회사 | Bumper and Method of coating white pearl for a bumper of an automobile |
| CN106624568A (en) * | 2017-02-28 | 2017-05-10 | 中源汽车零部件（大连）股份有限公司 | White body trial manufacturing side wall integrated clamp and working method thereof |
-
1997
- 1997-03-05 JP JP05048997A patent/JP3783090B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100347723B1 (en) * | 1999-09-30 | 2002-08-09 | 대우자동차 주식회사 | Vehicles White Perl Color Coating Paint |
| KR20020084434A (en) * | 2001-05-02 | 2002-11-09 | 현대자동차주식회사 | Bumper and Method of coating white pearl for a bumper of an automobile |
| CN106624568A (en) * | 2017-02-28 | 2017-05-10 | 中源汽车零部件（大连）股份有限公司 | White body trial manufacturing side wall integrated clamp and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3783090B2 (en) | 2006-06-07 |
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