JPS6174682A - Method for painting automobile body - Google Patents

Method for painting automobile body

Info

Publication number
JPS6174682A
JPS6174682A JP19654384A JP19654384A JPS6174682A JP S6174682 A JPS6174682 A JP S6174682A JP 19654384 A JP19654384 A JP 19654384A JP 19654384 A JP19654384 A JP 19654384A JP S6174682 A JPS6174682 A JP S6174682A
Authority
JP
Japan
Prior art keywords
painting
automobile body
resin
coating
resinous parts
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
Application number
JP19654384A
Other languages
Japanese (ja)
Other versions
JPH0249154B2 (en
Inventor
Masafumi Ono
雅史 大野
Takashi Goto
貴 後藤
Kiminori Ishii
石井 公則
Yutaka Yamada
豊 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP19654384A priority Critical patent/JPH0249154B2/en
Publication of JPS6174682A publication Critical patent/JPS6174682A/en
Publication of JPH0249154B2 publication Critical patent/JPH0249154B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To carry out painting of an automobile body and electrostatic painting simultaneously by undercoating the automobile body, attaching resinous parts, coating an electrically conductive primer essentially on the resinous parts, applying the second coating and overcoating, and then painting the resinous parts and the automobile body unitedly. CONSTITUTION:In painting continuously an automobile body, the automobile body is undercoated, resinous parts are attached, an electrically conductive primer is coated essentially on the resinous parts, the body is applied with further coating, and the resinous parts and the automobile body are unitedly painted. A composition contg. 50-99wt% resin, obtained by graft-copolymerizing maleic acid onto a propylene-ethylene copolymer, and 50-1wt% electrically conductive material in the solid material is preferably used as said electrically conductive primer. By said painting method, the painting of the automobile body and the electrostatic painting can be conducted simultaneously, the color matching between the automobile body and the resinous parts is made possible, the resinous parts painting equipment may not be provided separately, and the painting cost can be remarkably reduced.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は自動車車体と樹脂部品とを一体塗装する塗装
方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of integrally painting an automobile body and resin parts.

(従来の技術) 従来、樹脂部品を備える自動車の塗装方法としては、第
2図に示すように車体については脱脂、化成処理を行っ
た後、下塗塗装し、110−180”Cの温度で焼付は
硬化し、次いで中塗塗装し、120〜150°Cで焼付
は硬化し、更にこの上に上塗塗装・・し、120〜17
0°Cで焼付け、硬化処理を行う。l一方バンパー、ロ
アエプロン等のhit mW 部品については第8図に
示すように、樹脂材料、例えばウレタン樹脂、ナイロン
樹脂等の材料から所望形態の成形体を成形し、この成形
体を脱脂洗浄あるいは物理処理により浄化し、ポリウレ
タン系樹脂塗料で下塗塗装し、焼付は硬化し、更にポリ
ウレタン系樹脂塗料で上塗塗装し、焼付け、硬化後、第
2図に示す処理が行われた前記車体に組付けられる方法
が用いられてきた。このような塗装方法とし1・・て、
金属部品と有機材料系部品を一つに組合せた抜色ちがい
を生じないよう(こ各部品を別々に塗装する方法が特開
昭58−17866号、同58−119879号公報に
開示されている。
(Prior art) Conventionally, as shown in Figure 2, the method of painting automobiles with resin parts is to degrease and chemically treat the body, then apply an undercoat and bake at a temperature of 110-180"C. is cured, then an intermediate coat is applied, the baking is cured at 120 to 150°C, and a top coat is applied on top of this.
Bake and harden at 0°C. On the other hand, for hit mW parts such as bumpers and lower aprons, as shown in FIG. It is purified by physical treatment, undercoated with polyurethane resin paint, baked and cured, and then top coated with polyurethane resin paint, baked and cured, and then assembled into the car body that has undergone the treatment shown in Figure 2. methods have been used. With this kind of painting method, 1...
In order to avoid color differences when metal parts and organic material parts are combined together (a method of painting each part separately is disclosed in Japanese Patent Laid-Open Nos. 58-17866 and 58-119879). .

また他の方法として樹脂部品に下塗塗装した後・、自動
車塗装ラインで一体塗装する方法がある。この方法では
ポリウレタン系樹脂塗料が樹脂部品用プライマとして用
いられ、ポリアミド樹脂、ポリブチレンテレフタレート
樹脂、ポリカーボネート樹脂等に用いられている脂肪酸
変性ポリエステル樹脂、オイルフリーポリエステル樹脂
、エポキシ1変性ポリエステル樹脂、メラミン樹脂ある
いはアミノアルキド系樹脂を主組成とする車体用中塗塗
料(例えば特開昭57−98575号)が用いられてお
り、中塗塗装した後120〜150°Cで15〜40分
焼付けが行われ、更にアミノアルキド樹脂またはアミノ
アクリル樹脂を主成分とする(中塗および/または)上
塗塗料を塗り重ねて塗膜が構成されている。この際上塗
塗料組成としては次のようなものが用いられている: (イ) アミノアルキド樹脂系1コート1ベーク型ソリ
ツドカラー、 (ロ) アミノアクリル樹脂系2コートlベーク型ソリ
ツドカラー、 (ハ) アミノアクリル樹脂系1コート1ベーク型メ・
タリツクカラー、 に) アミノアクリル樹脂系2コートlベーク型メタリ
ツクカラー。
Another method is to apply an undercoat to the resin parts and then paint them all together on an automobile painting line. In this method, polyurethane resin paint is used as a primer for resin parts, and polyamide resin, polybutylene terephthalate resin, fatty acid-modified polyester resin used in polycarbonate resin, oil-free polyester resin, epoxy 1-modified polyester resin, melamine resin, etc. Alternatively, an intermediate coating for car bodies (for example, JP-A No. 57-98575) whose main composition is an amino alkyd resin is used, and after the intermediate coating is applied, baking is performed at 120 to 150°C for 15 to 40 minutes, and then A coating film is constructed by applying multiple coats of (intermediate and/or top coat) paints containing aminoalkyd resin or aminoacrylic resin as a main component. In this case, the following top coating compositions are used: (a) aminoalkyd resin-based one-coat one-bake solid color, (b) aminoacrylic resin-based two-coat one-bake solid color, (c) amino Acrylic resin 1 coat 1 bake type method
Taric color, 2) Aminoacrylic resin-based 2-coat bake-type metallic color.

(発明が解決しようとする問題点) このような従来の塗装方法においては、(イ)前記・・
特開昭58−17866号および同58−1.1987
9号1公報に記載されている方法において組立工程前ま
で金属部品と有機材料系部品を別々の塗装ラインで処理
するように、少くとも下塗塗装までを別の作業場で車体
塗装設備とは別の樹脂部品用の塗装設備を用いて行わな
ければならないため作業能率が悪く、かつ塗布やオーブ
ン等の設備がそれぞれ必要となる。(ロ)また、樹脂部
品に下塗塗装した後自動車塗装ラインで同時塗装する方
法によっても車体と樹脂部品の塗装後の色彩を同じにす
ることIは困難であり、色ちがいを生じるという問題点
があった。
(Problems to be solved by the invention) In such conventional painting methods, (a) the above-mentioned...
JP-A-58-17866 and JP-A No. 58-1.1987
In the method described in Publication No. 9, No. 1, metal parts and organic material parts are processed in separate painting lines until the assembly process, and at least the process up to the undercoating process is performed in a separate workshop from the car body painting equipment. The work efficiency is poor because it must be carried out using painting equipment for resin parts, and equipment such as coating equipment and ovens are required. (b) Also, by applying a primer coat to resin parts and then painting them simultaneously on an automobile painting line, it is difficult to make the color of the car body and resin parts the same after painting, and there is the problem of color differences. there were.

(問題点を解決するための手段) この発明は樹脂部品用のプライマとして導電性プライマ
を用いその組成を車体の電着塗料、中塗□塗料および上
塗塗料との相性がよく、かつ外観仕上り性が導電性プラ
イマの有無によっても生じないように規定することによ
り、樹脂部品と車体を一体で塗装することを可能とし上
記問題点を解決する。
(Means for Solving the Problems) This invention uses a conductive primer as a primer for resin parts, and its composition has a good compatibility with the electrodeposition paint, intermediate paint, and top coat paint of the car body, and has a good appearance finish. By stipulating that the problem does not occur regardless of the presence or absence of a conductive primer, it is possible to paint the resin parts and the vehicle body as one body, thereby solving the above problem.

従ってこの発明の自動車車体の塗装方法は、車・体に下
塗塗装した後、樹脂部品を取付け、導電性プライマを、
主に樹脂部品に塗布し、次いで中塗塗装し、さらに上塗
塗装して樹脂部品と車体を一体で塗装することを特徴と
する。
Therefore, in the method of painting an automobile body according to the present invention, after applying a primer coat to the car/body, attaching resin parts, applying a conductive primer,
It is characterized in that it is primarily applied to resin parts, then an intermediate coat is applied, and then a top coat is applied to paint the resin parts and the vehicle body as one unit.

この発明で用いられる樹脂部品を構成する樹脂としては
、ポリブチレンテレフタレート(PBT)、ポリアミド
(PA)、SMO等の車体中塗、上塗塗料の焼付は湿度
(120°C以上)においても変形しない樹脂が用いら
れる。また樹脂部品に主して・・・塗布される導電性プ
ライマとしては次に示す特性を有することが必要である
; (イ)車体用上塗塗料等の硬い樹脂を用いても樹脂部品
の低温物性を低下させない。
The resins constituting the resin parts used in this invention include polybutylene terephthalate (PBT), polyamide (PA), and SMO, which are resins that do not deform even in humidity (120°C or higher) when baking the car body intermediate coating and top coating. used. In addition, the conductive primer that is mainly applied to resin parts must have the following properties; does not decrease.

(ロ)車体用の下塗塗料、中塗塗料、上塗塗料との・相
性が良く、塗膜物性も現行品と同等とする。
(b) It is compatible with the base coat, intermediate coat, and top coat for car bodies, and the physical properties of the paint film are the same as those of current products.

(ハ)上塗の外観仕上り性は現行と同じであり、樹脂部
品上と車体との塗膜外観に差を生じさせない0 上記要求特性を満足するプライマとしては次の組・□酸
物、即ちプロピレン−エチレン共重合体にマレ1イン酸
またはマレイン酸無水物をグラフト共重合してなる樹脂
50〜99恵緻%と導電材60〜1重足%を固形分中に
含有して成る組成物をプライマとして用いるのが好まし
い。このようなプライマとしてはプラグロス1100(
日本油脂(株)製)がある。
(c) The appearance finish of the top coat is the same as the current one, and there is no difference in the appearance of the paint film on the resin parts and on the car body. The following primers that satisfy the above required characteristics are: □ Acid, i.e. propylene - A composition comprising 50 to 99% of a resin obtained by graft copolymerizing maleic acid or maleic anhydride to an ethylene copolymer and 60 to 1% of a conductive material in the solid content. Preferably, it is used as a primer. An example of such a primer is Plugloss 1100 (
(manufactured by Nippon Oil & Fats Co., Ltd.).

次に中塗塗料としてはアミノアルキド系樹脂またはポリ
エステル系樹脂を主成分とする塗料を用いるのが好まし
く、また上塗塗料としてはアミノj・・アルキド系また
はアミノアクリル系樹脂を主成分とする塗料が好ましく
用いられる。
Next, it is preferable to use a paint whose main component is an aminoalkyd resin or a polyester resin as an intermediate coating, and a paint whose main component is an aminoj... alkyd or aminoacrylic resin is preferable as the top coat. used.

次にこの発明を図面により説明する。Next, this invention will be explained with reference to the drawings.

第1図(A)にこの発明の塗装方法の工程図を、第1図
(B)に下塗工程1、中塗工程2、上塗工程・8の説明
図を示す。第1図(A)に示すように樹脂部品を従来法
に従って成形し、表面の脱脂、洗浄あるいは物理処理(
プラズマ処理、サンディング等)を施す。一方車体につ
いて常法に従って脱脂、化成処理を行った後、下塗塗装
(電着塗装等)シーり′  焼付は硬化する。次に中塗
工程前に車体に、前記・前処理済み樹脂部品を取付けた
後、導電性プライマを主として樹脂部品に塗布するが、
車体に塗布されてもよい。この樹脂部品の取付けは第1
図(B)に一層明確に示しである。即ち下塗塗装工程l
で車体会に電着塗装を行った後中塗塗装工程2に入る前
にバンパー等樹脂部品5を投入し、車体に取付け、次い
でプライマ6を塗布する。この導電性プライマは1〜2
0μ、好ましくは2〜8μ塗布するのが好ましく、1μ
未満では連続膜にならずスまた20μを越える場合は、
塗装時に局部的な流れを生ずるばかりか、コスト面でも
不利益になる。
FIG. 1(A) shows a process diagram of the coating method of the present invention, and FIG. 1(B) shows an explanatory diagram of the undercoating process 1, intermediate coating process 2, and top coating process 8. As shown in Figure 1 (A), resin parts are molded according to conventional methods, and the surfaces are degreased, cleaned, or physically treated (
plasma treatment, sanding, etc.). On the other hand, after the car body has been degreased and chemically treated in accordance with conventional methods, the undercoat (electrodeposition, etc.) sealant and baking harden. Next, after attaching the pre-treated resin parts to the car body before the intermediate coating process, a conductive primer is applied mainly to the resin parts.
It may also be applied to the vehicle body. Installation of this resin part is the first step.
This is shown more clearly in Figure (B). That is, the undercoating process l
After electro-deposition painting is performed on the car body and before entering the intermediate coating process 2, resin parts 5 such as bumpers are put in and attached to the car body, and then a primer 6 is applied. This conductive primer is 1 to 2
It is preferable to apply 0 μ, preferably 2 to 8 μ, and 1 μ
If it is less than 20 μm, it will not form a continuous film, and if it exceeds 20μ,
Not only will this cause localized flow during painting, but it will also be disadvantageous in terms of cost.

次に7で示す若干のセツティングタイムをおいた後、中
塗工程2で従来法Gこ従って中塗塗装し、9で示す焼付
け、硬化し、次いて上塗工程8で従□来法に従って上塗
塗装し、9で示す焼付け、硬化し樹脂部品および車体の
車体色塗装を完了する。
Next, after a slight setting time as shown in 7, an intermediate coat is applied according to the conventional method G in the intermediate coating process 2, followed by baking and curing as shown in 9, and then a top coat is applied in the top coating process 8 according to the conventional method. , 9 completes the baking and hardening of the resin parts and car body color painting.

(作 用) 以上の様な塗装工程を経るため、 (イ) 従来の別塗装に比較して作業能率を大幅Gこ向
□上できる。
(Function) Because of the above-mentioned painting process, (a) work efficiency can be greatly improved compared to conventional separate painting.

(ロ) 従来の別塗装に比較して色合せが容易Gこでき
る。
(b) Color matching is easier compared to conventional separate painting.

(ハ)従来の別塗装に比較して樹脂部品用塗装設備がい
らなくなり、設備費を低減できる。
(c) Compared to conventional separate painting, there is no need for painting equipment for resin parts, reducing equipment costs.

(実施例) 次にこの発明を実施例および試験例につき説明する。(Example) Next, the present invention will be explained with reference to Examples and Test Examples.

実施例1 第1表に示すAl〜8およびA9として車体用1・・中
塗塗料(日本油脂(株)製、商品名メラミAlシーラー
、オイルフリーポリエステル樹脂、エポキシ樹脂、メラ
ミン樹脂を主成分とする)をプライマとして用いた。但
しA4〜9は比較のためのプライマである。
Example 1 As Al~8 and A9 shown in Table 1, 1 for car body... Intermediate paint (manufactured by Nippon Oil & Fats Co., Ltd., trade name Melami Al Sealer, mainly composed of oil-free polyester resin, epoxy resin, and melamine resin) ) was used as a primer. However, A4 to A9 are primers for comparison.

プライマとしてA1〜9のプライマを、上塗績l料とし
て、車体用のアミノアルキド樹脂系塗料(日本油脂(株
)製、商品名メラミン樹脂)を用い下記の如く試験用塗
装板を作成した。
A test coated plate was prepared as described below using primers A1 to A9 as primers and an amino alkyd resin paint for car bodies (manufactured by NOF Corporation, trade name: melamine resin) as a top coating material.

〔試験用塗装板の作成〕[Creation of painted board for testing]

下記素材を1.LX −)リクロロエタンで脱脂した後
、A1〜9の各プライマを空気霧化塗装し、次いで5分
間放置した後、上塗を静電空気霧化塗装し、140″C
で80分間焼き付は乾燥を行ない、試験用塗装板を作成
した。これ等の塗装板につき・・・次の実験を行ない、
得た結果を第2〜4表に示す。
1. Prepare the following materials. LX -) After degreasing with dichloroethane, each primer of A1 to 9 was applied by air atomization, and then after being left for 5 minutes, the top coat was applied by electrostatic air atomization, and 140"C
Baking and drying were performed for 80 minutes to prepare a coated board for testing. Regarding these painted boards...we conducted the following experiment.
The results obtained are shown in Tables 2-4.

(a)  耐低温衝撃性 Φ)塗膜性能 (イ) 塗膜外観 (ロ)密着性 (ハ)耐湿性 に)耐熱性 (ホ) 耐ガソリン性 (0)  静電塗装性 尚前記素材としては次のものを使用した。(a) Low temperature impact resistance Φ) Paint film performance (b) Paint film appearance (b) Adhesion (c) Moisture resistance ) heat resistance (e) Gasoline resistance (0) Electrostatic coating properties The following materials were used as the materials.

(A)  ポリアミド(PA)樹脂素材6ナイロンある
いは6−6ナイロンをベースに、ガラス繊維、タルク等
の無機質を単独あるいは複合して5〜40%充填して剛
性を向上させ、更に耐衝撃性向上のためにエラストマを
5〜20%ブレンドしたもの。
(A) Polyamide (PA) resin material Based on nylon 6 or 6-6 nylon, it is filled with 5 to 40% of inorganic materials such as glass fiber and talc alone or in combination to improve rigidity and impact resistance. A blend of 5 to 20% elastomer.

(B)  ポリブチレンチレフタレ−) (PBT)樹
脂素材耐衝撃性向上の手段として、ポリブタジェン、エ
チレンブ四ピレンゴム(EPEり等のエラストマを5〜
20%ブレンドした変性PB’[’樹脂。・・・(0)
  ポリカーボネー)(PC)樹脂素材PC樹脂をベー
スに、耐熱性、耐薬品性を改良するために、PBT樹脂
等を5〜40%ブレンドして変性した変性PC樹脂。
(B) Polybutylene terephthalate) (PBT) Resin material As a means of improving impact resistance, elastomers such as polybutadiene and ethylene butylene rubber (EPE) are used to improve impact resistance.
20% blended modified PB'[' resin. ...(0)
(Polycarbonate) (PC) Resin material Modified PC resin based on PC resin, blended with 5 to 40% PBT resin etc. to improve heat resistance and chemical resistance.

評価方法 (a)耐低温衝撃性 ハイレートインパクト試験(High Rate In
−pact Te5t ) 米国レオメ) IJツク社製RI’I’試験機を用い、
撃心が試料を打ち抜いた時の衝撃エネルギーを測定する
(撃心の移動速度は打ち扱きの前後で変化なく常に一定
速度に保たれる)。当該試験(−40°Cで衝撃速度1
1.1 m/secの条件)においては降伏エネルギー
が10 Jou1以上である ・ことを条件とする。
Evaluation method (a) Low temperature impact resistance high rate impact test (High Rate In
-pact Te5t) US Rheome) Using a RI'I' tester manufactured by IJ Tsuku,
Measure the impact energy when the center of impact punches through the sample (the moving speed of the center of impact remains constant before and after the punching process). The test (impact velocity 1 at -40°C
1.1 m/sec condition), the condition is that the yield energy is 10 Jou1 or more.

■)塗膜性能 (イ)塗膜外観 屋内における昼光色替光灯500ルックス以上である条
件下で、被検食面より約50cm1離れた位置より正常
な視力で外観検査を行う。
(2) Paint film performance (a) Paint film appearance The appearance is inspected with normal visual acuity from a position approximately 50 cm1 away from the test surface under conditions of indoor daylight color changing light of 500 lux or more.

ただしふくれ、ピンホールなどの塗装欠陥は至近距離ま
たはななめ方向から行なってよい。
However, painting defects such as blisters and pinholes may be treated from close range or diagonally.

(ロ)密着性 試験片の塗膜面にマルチクロスカッタを用−・い素地に
軽く達する等間隔1關の平行線をた。
(b) Adhesion A multi-cross cutter was used on the coated surface of the adhesion test piece to cut parallel lines at equal intervals that lightly touched the substrate.

かいに直交させて引き、1關平方の正方形を100個つ
くる。この状態で幅に奈裕のあるセロハン粘着テープを
密着させ上方に一気に引きはがし、塗布のはがれの生じ
ない正方形の数を調べ、全数(100個)に対する割合
として評価する。
Draw it perpendicular to the paddle to make 100 squares of 1 square. In this state, a cellophane adhesive tape with a wide width is applied tightly and peeled upward at once, and the number of squares where the coating does not peel off is determined and evaluated as a percentage of the total number (100 pieces).

(ハ)耐湿性 温度、湿度とも調整可能な密閉箱を使用し、試験片を温
度50±1°C1相対湿度98%以・・上に調整した密
閉箱に水平におき、24時間ごとにふくれの発生および
その変化の状態を調べ240時間まで行う。
(c) Moisture resistance Use a sealed box where both temperature and humidity can be adjusted. Place the test piece horizontally in the sealed box adjusted to a temperature of 50 ± 1°C, relative humidity of 98% or more, and swell every 24 hours. The occurrence of and the state of change thereof will be investigated for up to 240 hours.

に)面寸 熱性 試験片を90°Cの恒温槽に500時間設置し、・24
時間室温に放置した後、塗膜夕1観および変色、つや引
は等熱による塗装異面の変化全調べる。
2) Surface dimension The thermal test piece was placed in a constant temperature bath at 90°C for 500 hours,
After leaving it at room temperature for an hour, the paint film was inspected for color change, gloss, and any other changes in the painted surface due to heat.

(句耐ガソリン性 試験片の表面にガソリンを約0.3〜0゜5 m1滴下
し、試験室に4時間放置した後、布でぶ・きとりただち
に塗膜についてつや引け、しみ、変色、軟化、はがれお
よびきれつなどの有無について調べる。
(Approximately 0.3 to 0.5 ml of gasoline was added to the surface of the gasoline resistance test piece, and after leaving it in the test room for 4 hours, the coating was wiped off with a cloth. , check for peeling and cracking.

(C1静電塗装性 (イ)塗着効率測定(TE) 試験片の表向にサランラップを巻き、静電塗装前後(焼
付後測定)の重量差より付着塗料重量を求め、吐出塗料
重量(固形分より算出)から効率を測定する。
(C1 Electrostatic coating property (a) Transfer efficiency measurement (TE) Wrap Saran wrap around the surface of the test piece, calculate the weight of the adhered paint from the difference in weight before and after electrostatic coating (measured after baking), and calculate the weight of the ejected paint (solid Efficiency is measured from (calculated from minutes).

(ロ)塗装品質確認(外観測定) 外観仕上りを標準板(エアースプレー)と目視により比
較し、膜厚をカット断面より測定する。第2〜4表の結
果からプライマとして前記要求特性を満足するものを用
いること)により、樹脂部品についても上塗静電塗装が
可能になり、得られた塗膜は耐低温衝撃性が低下せず、
また中塗塗装に代替することが可能で、自動車車体と樹
脂部品との一体塗装による塗膜の形成が可能であること
がわかる。□実施例2 自動車車体用鋼板テストピース12枚を川Rt、、各テ
ストピースにつき下塗としてED (日本ペイント社製
、パワートップ)を膜厚15μに塗布し、17.5°C
で30分焼付けし、次いで導電性プライマとしてプラグ
ロス1100 (日本油脂(株)製)を膜厚5μ、10
μ、15μ、ダストの4種にわけて塗布し、各テストピ
ースにつきメラミA1シーラーグレーT(日本油脂(株
)製)を膜厚3oμ塗布し、140 °Cで80分焼付
け、硬化し、更に+002(関西ペイント(株)製)、
+006 (日本油脂(株)製)、ナ018 (日本油
脂(株)製)を2同繰返し塗布(膜厚85μ)し、14
 (] ℃で80分焼付け、硬化した。
(b) Coating quality confirmation (exterior measurement) Visually compare the exterior finish with a standard plate (air spray) and measure the film thickness from the cut section. Based on the results in Tables 2 to 4, by using a primer that satisfies the above-mentioned required properties, it is now possible to perform electrostatic top coating on resin parts, and the resulting coating film does not deteriorate in low-temperature impact resistance. ,
It can also be seen that it is possible to replace the intermediate coating, and it is possible to form a coating film by integrally coating the automobile body and resin parts. □Example 2 Twelve steel plate test pieces for automobile bodies were placed at River Rt. ED (manufactured by Nippon Paint Co., Ltd., Power Top) was applied as an undercoat to each test piece to a film thickness of 15 μm, and heated at 17.5°C.
Baked for 30 minutes with
For each test piece, Melami A1 Sealer Gray T (manufactured by Nippon Oil & Fats Co., Ltd.) was applied in 4 types: μ, 15 μ, and dust, and a film thickness of 3 μ was applied, baked at 140 °C for 80 minutes, and then cured. +002 (manufactured by Kansai Paint Co., Ltd.),
+006 (manufactured by Nippon Oil & Fats Co., Ltd.) and Na018 (manufactured by Nippon Oil & Fats Co., Ltd.) were applied twice in the same manner (film thickness 85 μm), and 14
It was baked for 80 minutes at (]°C to harden.

また比較のために導電性プライマを塗布しなかったこと
を除き、他は同様にして12個のテスト・ピースを作製
した。
For comparison, 12 test pieces were prepared in the same manner except that no conductive primer was applied.

以上のようにして作製したテストピース24枚につき、
実施例1に記載した方法と同様の方法で外観仕上り性を
評価し、次に1」視によりプライマ有無の差を評価し、
更にプライマの有無による色差(ΔE:色差計により測
定)を評価して得た結果□を次の第5表に示す。
For each of the 24 test pieces produced as described above,
The appearance finish was evaluated by the same method as described in Example 1, and then the difference between the presence and absence of primer was evaluated by 1'' observation,
Furthermore, the results obtained by evaluating the color difference (ΔE: measured by a color difference meter) with and without the primer are shown in Table 5 below.

(発明の効果) 以上説明してきたように、この発明の自動車塗装方法は
、樹脂部品の塗装方法について、車体の中塗T程前に樹
脂部品を車体に取付け、導電性プライマ塗布後、中塗工
程および上塗工程を経て車体色塗装を行なう塗装方法と
したため、(イ)車体と同時に静電塗装が可能になり、
(ロ)車体と樹脂部品との色合せが可能になり、(ハ)
樹脂部品用塗装設備を、別に設ける必要がなくなり、塗
装コストを大幅に低減できる、等の効果が得られる。
(Effects of the Invention) As explained above, in the automobile painting method of the present invention, the resin parts are attached to the car body before the intermediate coating T of the car body, and after the conductive primer is applied, the intermediate coating process and Because we adopted a painting method that paints the car body color after the top coating process, (a) electrostatic painting can be applied at the same time as the car body;
(b) It becomes possible to color match the car body and resin parts, and (c)
There is no need to separately provide painting equipment for resin parts, and effects such as a significant reduction in painting costs can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図(A)はこの発明の塗装方法の工程図、第1図(
B)はこの発明の塗装方法の下塗工程、中塗工程、上塗
工程の説明図、 □ 第2図は従来の車体塗装方法の工程図、第8図は従来の
自動車用樹脂部品の塗装方法の工程図である。 ■・・・下塗工程     2・・・中塗工程8・・・
上塗工程     4・・・車体5・・・樹脂部品  
   6・・・プライマ7・・・セツティング   8
・・・中塗9・・・焼付け、硬化   IO・・・上塗
特許出願人 日産自動車株式会社 第1図 (A) (B) 第2図 第3図 ==
Figure 1 (A) is a process diagram of the coating method of this invention;
B) is an explanatory diagram of the undercoating process, intermediate coating process, and top coating process of the painting method of this invention, □ Figure 2 is a process diagram of the conventional car body painting method, and Figure 8 is the process diagram of the conventional painting method for automotive resin parts. It is a diagram. ■...Undercoating process 2...Intermediate coating process 8...
Top coating process 4...Car body 5...Resin parts
6...Primer 7...Setting 8
...Intermediate coating 9...Baking, hardening IO...Top coating Patent applicant Nissan Motor Co., Ltd. Figure 1 (A) (B) Figure 2 Figure 3 ==

Claims (1)

【特許請求の範囲】 1、自動車車体を連続的に塗装する塗装方法において、 車体に下塗塗装した後、樹脂部品を取付け、導電性プラ
イマを、主に樹脂部品に塗布し、次いで中塗塗装し、さ
らに上塗塗装して、樹脂部品と車体を一体で塗装するこ
とを特徴とする自動車車体の塗装方法。
[Scope of Claims] 1. In a method of continuously painting an automobile body, after applying a primer coat to the car body, attaching resin parts, applying a conductive primer mainly to the resin parts, and then applying an intermediate coat, A method for painting an automobile body, characterized by further applying a top coat to paint the resin parts and the vehicle body as one unit.
JP19654384A 1984-09-21 1984-09-21 JIDOSHASHATAINOTOSOHOHO Expired - Lifetime JPH0249154B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19654384A JPH0249154B2 (en) 1984-09-21 1984-09-21 JIDOSHASHATAINOTOSOHOHO

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19654384A JPH0249154B2 (en) 1984-09-21 1984-09-21 JIDOSHASHATAINOTOSOHOHO

Publications (2)

Publication Number Publication Date
JPS6174682A true JPS6174682A (en) 1986-04-16
JPH0249154B2 JPH0249154B2 (en) 1990-10-29

Family

ID=16359486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19654384A Expired - Lifetime JPH0249154B2 (en) 1984-09-21 1984-09-21 JIDOSHASHATAINOTOSOHOHO

Country Status (1)

Country Link
JP (1) JPH0249154B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114780A (en) * 1984-11-12 1986-06-02 Kansai Paint Co Ltd Method for painting outer panel part of automobile
JPS61114779A (en) * 1984-11-12 1986-06-02 Kansai Paint Co Ltd Method for painting steel plate
JPS624476A (en) * 1985-06-29 1987-01-10 Kansai Paint Co Ltd Painting method for outside plate part of automobile
JPS6245381A (en) * 1985-08-21 1987-02-27 Kansai Paint Co Ltd Method for coating steel plate
JPS6265773A (en) * 1985-09-14 1987-03-25 Kansai Paint Co Ltd Method for painting on steel products
WO2020153057A1 (en) 2019-01-21 2020-07-30 関西ペイント株式会社 Method for forming multi-layer coating film

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114780A (en) * 1984-11-12 1986-06-02 Kansai Paint Co Ltd Method for painting outer panel part of automobile
JPS61114779A (en) * 1984-11-12 1986-06-02 Kansai Paint Co Ltd Method for painting steel plate
JPH0476745B2 (en) * 1984-11-12 1992-12-04 Kansai Paint Co Ltd
JPH0476746B2 (en) * 1984-11-12 1992-12-04 Kansai Paint Co Ltd
JPS624476A (en) * 1985-06-29 1987-01-10 Kansai Paint Co Ltd Painting method for outside plate part of automobile
JPH0550358B2 (en) * 1985-06-29 1993-07-28 Kansai Paint Co Ltd
JPS6245381A (en) * 1985-08-21 1987-02-27 Kansai Paint Co Ltd Method for coating steel plate
JPH062261B2 (en) * 1985-08-21 1994-01-12 関西ペイント株式会社 Steel plate coating method
JPS6265773A (en) * 1985-09-14 1987-03-25 Kansai Paint Co Ltd Method for painting on steel products
WO2020153057A1 (en) 2019-01-21 2020-07-30 関西ペイント株式会社 Method for forming multi-layer coating film
US11958074B2 (en) 2019-01-21 2024-04-16 Kansai Paint Co., Ltd Method for forming a multilayer coating film

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