JPH034970A - Method for painting resin molding - Google Patents

Method for painting resin molding

Info

Publication number
JPH034970A
JPH034970A JP13694889A JP13694889A JPH034970A JP H034970 A JPH034970 A JP H034970A JP 13694889 A JP13694889 A JP 13694889A JP 13694889 A JP13694889 A JP 13694889A JP H034970 A JPH034970 A JP H034970A
Authority
JP
Japan
Prior art keywords
heat
resin molded
resistant resin
molded product
subjected
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
JP13694889A
Other languages
Japanese (ja)
Other versions
JP2791102B2 (en
Inventor
Tetsuya Nakada
中田　徹也
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP1136948A priority Critical patent/JP2791102B2/en
Publication of JPH034970A publication Critical patent/JPH034970A/en
Application granted granted Critical
Publication of JP2791102B2 publication Critical patent/JP2791102B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To well apply electrostatic painting without applying primer coating treatment by a method wherein a heat-resistant resin molding is etched and subsequently washed with water to be subjected to conductivity imparting treatment and the treated molding is subjected to electrostatic painting along with a metal member. CONSTITUTION:A heat-resistant resin molding (a) such as a bamper formed by injection molding is immersed in an etching solution 1 at first and the surface thereof is subjected to etching treatment A to be enhanced in its adhesiveness to paint and subsequently subjected to washing treatment B using a spray gun 2. Next, conductivity imparting treatment C applying a conductive surfactant 4 to the whole of said surface uniformly using a spray gun 3 is applied to the molding (a). This heat-resistant resin molding (a) is fed to a top coating process along with a metal body subjecting to an electrodeposition painting process aiming anticorrosion and an intermediate coating process obtaining a good finish surface and subjected to electrostatic painting along with the metal body and both of them are baked at predetermined baking temp.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、樹脂成形品の塗装方法、特に、樹脂成形品と
金属製部材とを同時に静電塗装する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method of painting a resin molded article, and particularly to a method of electrostatically painting a resin molded article and a metal member at the same time.

（従来の技術） 近年、自動車の車体の一部に、鋼板部材に換えて、軽量
であり且つ加工性に優れ、しかも耐腐食性等に富んだ合
成樹脂の成形品が使用されている。、、　ＰＡえば、車
体の一部を構成するバンパー等を合成樹脂により形成す
ることにより、車体軽量化、デザイン性ならびに耐腐食
性等を向上させるようになっている。(Prior Art) In recent years, synthetic resin molded products, which are lightweight, have excellent workability, and are highly corrosion resistant, have been used in place of steel plate members for parts of automobile bodies. For example, by forming a bumper and the like that constitute a part of the car body from synthetic resin, the weight of the car body can be reduced and the design and corrosion resistance can be improved.

そして、従来においては、上記のようなバンパー等の合
成樹脂成形品と、例えば、金属製のボディ本体とは、そ
れぞれ別工程で静電塗装されていた。これは、上記両者
の静Ｔ４塗装後における塗料の焼付は温度の違いによる
ものである。即ち、静電塗装後における金属製のボディ
本体の焼付は温度が、上記合成樹脂成形品の熱変形温度
以上とされており、このため、上記ボディ本体と合成樹
脂成形品とに対する静電塗装およびこれに連続する焼付
けを同時に同一の工程で実施することが困難とされてい
た。Conventionally, a synthetic resin molded product such as a bumper as described above and, for example, a metal body body have been electrostatically coated in separate processes. This is because the baking of the paint after static T4 painting in both cases is due to the difference in temperature. That is, the baking temperature of the metal body body after electrostatic coating is said to be higher than the heat deformation temperature of the synthetic resin molded product, and therefore, electrostatic coating and It has been considered difficult to carry out subsequent baking simultaneously in the same process.

しかしながら、上記のように金属製のボディ本体とバン
パー等の合成樹脂成形品とをそれぞれ別工程により塗装
する場合には、個々に対する塗装の仕上がり状態が微妙
に異なると共に、一般に、上記金属製のボディ本体の静
電塗装には、メラミンアルキッド系塗料やアクリルメラ
ミン塗料が使用され、また、合成樹脂成形品の静電塗装
には、ウレタン系の塗料が使用されており、このため、
上記金属製のボディ本体とバンパー等の合成樹脂成形品
とを同一色に仕上げる場合に、その両者の色調が微妙に
異なることになって、色合わせが困難とされていた。し
かも、上記各塗料の成分が相違することに起因して、そ
れぞれの劣化の度合いが異なり、これにより、特に経時
後において、上記の両者の色合いに差異が生じることに
なって、外観を著しく低下させることになっていた。However, when painting a metal body body and a synthetic resin molded product such as a bumper in separate processes as described above, the finished state of each individual painting may be slightly different, and in general, the metal body body and the synthetic resin molded parts such as bumpers Melamine alkyd paint or acrylic melamine paint is used for electrostatic painting of the main body, and urethane paint is used for electrostatic painting of synthetic resin molded products.
When finishing the metal body body and a synthetic resin molded product such as a bumper in the same color, the color tones of the two are slightly different, making color matching difficult. Moreover, due to the differences in the components of each of the above paints, the degree of deterioration is different for each, which results in a difference in the hue of the two above, especially after aging, which significantly deteriorates the appearance. It was supposed to be done.

これに対処しては、上記のようなボディ本体等の金属製
部材とバンパー等の合成樹脂成形品とを同時に静電塗装
することが考えられている０例えば特開昭６１−２７１
０５９号公報によれば、合成樹脂成形品に対して、その
表面に導電性皮膜を形成する導電化処理を施したのち、
この導電化処理された合成樹脂成形品と金属部品とを共
に静電塗装する方法が示されている。To deal with this, it has been considered to electrostatically coat metal members such as the body body and synthetic resin molded parts such as bumpers at the same time.
According to Publication No. 059, after a synthetic resin molded product is subjected to conductive treatment to form a conductive film on its surface,
A method of electrostatically painting both the conductive synthetic resin molded product and the metal part is disclosed.

（発明が解決しようとする課題） ところで、上記のように合成樹脂成形品を静電塗装する
ための前処理として行われる導電化処理としては、−ｉ
に、合成樹脂成形品の表面に導電性プライマーを塗布す
ることが行われているのであるが、このプライマー塗布
処理が極めて複雑なものであり、このなめ、作業性の低
下を招くと共に、上記導電性ブライマーが高価なもので
あって、コスト的にも高くつくことになっていた。更に
、上記導電ブライマーを合成樹脂成形品の表面全体にわ
たって平滑に塗布することは一般に極めて困難とされて
おり、このため、その後における静電塗装により形成さ
れる最終的な塗膜の表面平滑性も十分満足できるもので
はなかった。(Problem to be Solved by the Invention) By the way, as a conductive treatment performed as a pretreatment for electrostatically painting a synthetic resin molded product as described above, -i
However, this primer coating process is extremely complicated, causing smearing and a decrease in workability, as well as the aforementioned conductive primer coating. Sex bridesmaids were expensive, and the cost was also high. Furthermore, it is generally considered extremely difficult to apply the above-mentioned conductive brimer smoothly over the entire surface of a synthetic resin molded product, and for this reason, the surface smoothness of the final coating film formed by subsequent electrostatic coating may also be affected. It wasn't quite satisfactory.

そこで本発明は、従来のようなプライマー塗布処理を施
すことなくバンパー等の合成樹脂成形品とボディ本体等
の金属製部材とを同時にしかも極めて良好に静電塗装し
得る塗装方法を提供することを目的とする。Therefore, the present invention aims to provide a coating method that can electrostatically coat a synthetic resin molded product such as a bumper and a metal member such as a body body simultaneously and extremely well without performing the conventional primer application process. purpose.

（課題を解決するための手段） 上記の課題を解決するために、本発明は次のように構成
される。(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

即ち、樹脂成形品の表面を静電塗装する方法において、
上記樹脂成形品を耐熱性樹脂により形成し、且つこの耐
熱性樹脂成形品をエツチング処理したのち、水洗いし、
次いで、その表面に導電性界面活性剤を塗布する導電化
処理を施すと共に、この導電化処理された耐熱性樹脂成
形品を金属製部材と共に静電塗装する。That is, in the method of electrostatically coating the surface of a resin molded product,
The above-mentioned resin molded product is formed from a heat-resistant resin, and after the heat-resistant resin molded product is etched, washed with water,
Next, the surface is subjected to conductive treatment by applying a conductive surfactant, and the conductive treated heat-resistant resin molded product is electrostatically coated together with the metal member.

ここで、本発明において使用される耐熱性樹脂としては
、少なくとも熱変形温度が１４０°Ｃ以上、即ち、熱変
形温度が静電塗装後における塗料の焼付は温度以上とさ
れた耐熱性樹脂、例えばポリフェニレンエーテルとポリ
アミドとをアロイ化した耐熱性樹脂が使用され、これに
より、例えば、バンパー等の耐熱性樹脂成形品が成形さ
れる。Here, the heat-resistant resin used in the present invention is a heat-resistant resin that has a heat distortion temperature of at least 140°C or higher, that is, a heat distortion temperature that is higher than the temperature at which the paint will bake after electrostatic coating, for example. A heat-resistant resin alloyed with polyphenylene ether and polyamide is used, and heat-resistant resin molded products such as bumpers are thereby molded.

そして、上記耐熱性樹脂成形品に対する塗料の付着性を
向上させるために、該耐熱性樹脂成形品をエツチング処
理するのであるが、この場合に使用されるエツチング液
としては、所定量の水に対して、例えば、日本ペイント
社製の商品名グラノジン５Ｄ２０００を１．９２重量％
、グラノジンＳＤ２５００ＭＺ−３を１．３６重量％、
ＮＰコンディショナー１を０．３２重景％、ＮＰコンデ
ィショナー１つを０．５９重量％、スターター７を０゜
１７重量％、スターター２１を０．４２重量％、ブライ
マー４０を１７７〜１，８９重景％およびトーナー３Ｏ
Ｎ−２５を０．０６重量％混合することにより、所定の
酸度に調整されたエツチング液が使用される。そして、
このエツチング液を、６０±２°Ｃ程度に温度調整する
と共に、該エツチング液中に上記耐熱性樹脂成形品を１
分間程度浸漬したのち、該耐熱性樹脂成形品の表面全体
をスプレーガン等を用いて３０秒間程度水洗し、次いで
、導電化処理として耐熱性樹脂成形品の表面に導電性界
面活性剤を塗布する。この導電性界面活性剤としては、
特に限定されないが、例えば吉相化学工業社製のエリー
ク９０９（商品名）等の第４級アンモニウム塩、あるい
はカチオン系の脂肪族アミン塩類が好適であり、本発明
においては、上記エリーク９０９をイソプロピルアルコ
ールにより１重量％に希釈した導電性界面活性剤が使用
され、これを上記耐熱性樹脂成形品の表面全体にわたっ
て均一に３０秒間程度スプレーガン等を用いて塗布する
ことにより、該耐熱性樹脂成形品に導電性が付与される
ことになる。そして、このような一連の前処理を施され
た耐熱性樹脂成形品を金属製部材と共に静電塗装する。In order to improve the adhesion of paint to the heat-resistant resin molded product, the heat-resistant resin molded product is etched. For example, 1.92% by weight of Granogin 5D2000 manufactured by Nippon Paint Co., Ltd.
, 1.36% by weight of Granozin SD2500MZ-3,
NP conditioner 1 at 0.32% by weight, 1 NP conditioner at 0.59% by weight, Starter 7 at 0°17% by weight, Starter 21 at 0.42% by weight, Brimer 40 at 177-1,89% by weight % and Toner 3O
An etching solution adjusted to a predetermined acidity by mixing 0.06% by weight of N-25 is used. and,
The temperature of this etching solution is adjusted to about 60±2°C, and the heat-resistant resin molded product is placed in the etching solution.
After soaking for about a minute, the entire surface of the heat-resistant resin molded product is washed with water for about 30 seconds using a spray gun, and then a conductive surfactant is applied to the surface of the heat-resistant resin molded product as a conductive treatment. . As this conductive surfactant,
Although not particularly limited, for example, quaternary ammonium salts such as Elique 909 (trade name) manufactured by Yoshiso Chemical Industry Co., Ltd., or cationic aliphatic amine salts are suitable. A conductive surfactant diluted to 1% by weight is used, and by applying this uniformly over the entire surface of the heat-resistant resin molded product using a spray gun or the like for about 30 seconds, the heat-resistant resin molded product conductivity will be imparted to it. Then, the heat-resistant resin molded product that has been subjected to a series of pretreatments is electrostatically coated together with the metal member.

なお、上記の導電性界面活性剤の塗布方法およびその塗
布時間は上記のものに限定されるものではない。Note that the method and time for applying the conductive surfactant described above are not limited to those described above.

（作　　用） 上記の方法によれば、耐熱性樹脂成形品をエツチング液
中に浸漬するだけの極めて簡単な方法により、その表面
が、脱脂洗浄され且つ適度に荒らされることになって、
これにより、塗料の付着性を向上させることができる。(Function) According to the above method, the surface of the heat-resistant resin molded product is degreased, cleaned, and appropriately roughened by the extremely simple method of immersing the heat-resistant resin molded product in an etching solution.
Thereby, the adhesion of the paint can be improved.

そして、上記のようにエツチング処理された耐熱性樹脂
成形品の水洗い後において、その表面に、極めて簡単に
導電性界面活性剤を塗布することにより、該耐熱性樹脂
成形品に導電性が付与されることになって、これにより
、耐熱性樹脂成形品と金属製部材とを同時に静電塗装す
ることができると共に、その両者を同時に焼き付けるこ
とができる。After washing the heat-resistant resin molded product that has been etched as described above, conductivity can be imparted to the heat-resistant resin molded product by simply applying a conductive surfactant to its surface. As a result, the heat-resistant resin molded product and the metal member can be electrostatically coated at the same time, and both can be baked at the same time.

このように、発明に係る塗装力・法によれば、耐熱性樹
脂成形品を静電塗装するための前処理工程が、従来のよ
うに合成樹脂成形品の表面に導電性ブライマーを塗布す
る場合に比べて、極めて簡単且つ容易に行い得ることに
なって、これにより、極めて安価にしかも良好に耐熱性
樹脂成形品と金属製部材とを同時に静電塗装することが
できると共に、上記耐熱性樹脂成形品と金属製部材とに
対する静電塗装工程の自動化をより一層進めることがで
きる。As described above, according to the coating force/method according to the invention, the pretreatment step for electrostatically coating a heat-resistant resin molded product is a case in which a conductive brimer is applied to the surface of a synthetic resin molded product as in the past. This makes it possible to electrostatically coat a heat-resistant resin molded product and a metal member at the same time at an extremely low cost and in a good manner. It is possible to further automate the electrostatic coating process for molded products and metal members.

（実　施　例） 以下、本発明の一実施例を説明する。(Example) An embodiment of the present invention will be described below.

まず、本実施例に係る塗装方法による塗装の対象となる
耐熱性樹脂成形品としは、第１図（Ｉ）に示すように、
例えば、インジェクション成形により形成されたバンパ
ー等の耐熱性樹脂成形品（イ）が考えられる。そして、
この耐熱性樹脂成形品（イ）の成形に使用される耐熱性
樹脂としては、例えば、少なくとも熱変形温度が１４０
°Ｃ以上、即ち、熱変形温度が静電塗装後における塗料
の焼付は温度以上とされた耐熱性樹脂、例えば、ポリフ
ェニレンエーテルとポリアミドとをアロイ化した耐熱性
樹脂が使用される。First, as shown in FIG. 1(I), the heat-resistant resin molded products to be painted by the painting method according to this example are as follows:
For example, a heat-resistant resin molded product (a) such as a bumper formed by injection molding can be considered. and,
The heat-resistant resin used for molding this heat-resistant resin molded product (a) has a heat distortion temperature of at least 140, for example.
A heat-resistant resin whose heat deformation temperature is higher than the baking temperature of the paint after electrostatic coating is used, for example, a heat-resistant resin alloyed with polyphenylene ether and polyamide.

そして、上記耐熱性樹脂成形品（イ）に対して、まず、
第１図（ＩＩ）に示すように、該耐熱性樹脂成形品（イ
）をエツチング液１中に浸漬し、その表面をエツチング
処理Ａすることにより塗料の付着性を向上させたのち、
（１）に示すように、上記耐熱性樹脂成形品（イ）の表
面をスプレーガン２等を用いて３０秒間程度水洗いする
水洗い処理Ｂを行い、次いで、ＮＶ）に示すように、耐
熱性樹脂成形品（イ）の表面全体にわたって均一にスプ
レーガン３等を用いて３０秒間程度導電性界面活性剤４
を塗布する導電化処理Ｃを施す。First, for the heat-resistant resin molded product (a),
As shown in FIG. 1 (II), the heat-resistant resin molded product (A) is immersed in etching solution 1, and its surface is subjected to etching treatment A to improve paint adhesion.
As shown in (1), the surface of the heat-resistant resin molded product (a) is washed with water for about 30 seconds using a spray gun 2, etc., in water washing process B, and then, as shown in NV), the heat-resistant resin molded product (a) is Spray the conductive surfactant 4 uniformly over the entire surface of the molded product (A) using a spray gun 3 for about 30 seconds.
Conductive treatment C is applied.

そして、第１図（ｆｆ）に示すように、上記耐熱性樹脂
成形品（イ）に対する塗料の付着性を向上させるために
、その表面をエツチング処理Ａする場合に使用されるエ
ツチング液１としては、所定蓋の水に対して、例えば、
日本ペイント社製の商品名グラノジン５Ｄ２０００を１
．９２重量％、グラノジンＳＤ２５００ＭＺ−３を１．
３６重量％、ＮＰコンディショナー１を０，３２重呈％
、ＮＰコンディショナー１９を０１５９重量％、スター
ター７を０．１７重量％、スターター２１を０．４２重
量％、プライマー４０を１．７７〜１．８９重量％およ
びトーナー３ＯＮ−２５を０，０６重量％混合すること
により、所定の酸度に調整さたエツチング液１が使用さ
れ、このエツチング液１を６０±２６Ｃ程度に温度調整
すると共に、該エツチング液１中に上記耐熱性樹脂成形
品（イ）を１分間程度浸漬する。As shown in FIG. 1 (ff), the etching liquid 1 used when etching the surface of the heat-resistant resin molded article (A) in order to improve the adhesion of the paint to the heat-resistant resin molded article (A) is as follows: , for a given lid of water, for example,
1 product name Granogin 5D2000 manufactured by Nippon Paint Co., Ltd.
．． 92% by weight, 1. Granozin SD2500MZ-3.
36% by weight, 0.32% of NP conditioner 1
, 0.159% by weight of NP Conditioner 19, 0.17% by weight of Starter 7, 0.42% by weight of Starter 21, 1.77-1.89% by weight of Primer 40 and 0.06% by weight of Toner 3ON-25. By mixing, an etching solution 1 adjusted to a predetermined acidity is used, and the temperature of this etching solution 1 is adjusted to about 60±26C, and the heat-resistant resin molded article (a) is added to the etching solution 1. Soak for about 1 minute.

ここで、上記耐熱性樹脂成形品（イ）を、浸漬時間を変
えてエツチング液１に各々浸漬し、それぞれの表面に塗
装した場合における塗装外観および塗料の付着性を調べ
た結果を、表１に示す。Here, the above heat-resistant resin molded product (a) was immersed in Etching Solution 1 for different immersion times, and the coated appearance and paint adhesion were investigated when each surface was coated. The results are shown in Table 1. Shown below.

なお、塗料の付着性を測定する実験方法としては、例え
ば、Ｊ　Ｉ　５５４００の基盤目試験がある。これは塗
装された耐熱性樹脂成形品（イ）の表面に、互いに直交
する多数の切り込みをつけることにより基盤目状の切り
傷を形成し、この基盤目状の切り傷の状態に基づいて塗
料の付着状態の良否を判定するものである。In addition, as an experimental method for measuring the adhesion of paint, there is, for example, the base grain test of J I 55400. This method involves making many mutually orthogonal cuts on the surface of the painted heat-resistant resin molded product (a) to form base grain-like cuts, and the paint adheres based on the condition of the base grain-like cuts. This is to judge whether the condition is good or bad.

（以下、余白） 表１ 表１より明らかなように、耐熱性樹脂成形品（イ）を、
１分間程度、エツチング液１中に浸漬した場合が、外観
ならびに塗料の付着性が極めて良好となることが判明し
た。(Hereinafter, blank space) Table 1 As is clear from Table 1, the heat-resistant resin molded product (a)
It was found that the appearance and paint adhesion were extremely good when immersed in Etching Solution 1 for about 1 minute.

そして、上記のようにエツチング処理された耐熱性樹脂
成形品（イ）を、第１図（ＩＩＩ）に示すように、スプ
レーガン２等を用いて、その表面を３０秒程度水洗いし
、次いで、第１図（ＩＶ）に示すように、水洗いされた
耐熱性樹脂成形品（イ）の表面に、スプレーガン３等を
用いて導電性界面活性剤４を塗布する導電化処理Ｃを行
う。Then, as shown in FIG. 1 (III), the surface of the heat-resistant resin molded product (a) that has been etched as described above is washed with water for about 30 seconds using a spray gun 2, etc., and then, As shown in FIG. 1 (IV), a conductive treatment C is performed in which a conductive surfactant 4 is applied to the surface of the heat-resistant resin molded product (a) that has been washed with water using a spray gun 3 or the like.

この場合に使用される導電性界面活性剤４としては、例
えば吉相化学工業社製のエリーク９０９（商品名）等の
第４級アンモニウム塩が使用され、本実施例においては
、上記エリーク９０９をイソプロピルアルコールにより
１重量％に希釈したものが使用される。そして、これを
上記耐熱性樹脂成形品（イ）の表面全体にわたって均一
に３０秒間程度スプレーガン３等を用いて塗布すること
により、該耐熱性樹脂成形品（イ）に導電性が付与され
ることになる。As the conductive surfactant 4 used in this case, for example, a quaternary ammonium salt such as Elique 909 (trade name) manufactured by Yoshiso Chemical Industry Co., Ltd. is used. It is used diluted to 1% by weight with alcohol. Then, by applying this uniformly over the entire surface of the heat-resistant resin molded product (A) for about 30 seconds using a spray gun 3, etc., conductivity is imparted to the heat-resistant resin molded product (A). It turns out.

ここで、上記のようにエツチング処理された耐熱性樹脂
成形品（イ）の表面に、異なった濃度に希釈された導電
性界面活性剤をそれぞれ３０秒間程度スプレー塗装した
場合におけるその表面の固有抵抗値および塗装外観を調
べた結果を表２に示す。Here, the specific resistance of the surface when conductive surfactants diluted to different concentrations are spray-painted for about 30 seconds on the surface of the heat-resistant resin molded product (a) that has been etched as described above. Table 2 shows the results of examining the values and painted appearance.

（以下、余白） 表２ 表２より、明らかなように、いずれの場合においても、
塗装外観は極めて良好となるが、導電性界面活性剤の濃
度を１重量％とじた場合に、抵抗値が１０６Ω程度とな
って、十分な導電性を付与することができることになる
。また、上記界面活性剤の濃度を３重量％以上とした場
合には、更に表面固有抵抗値が低下することになるので
あるが、これに件なって、塗料の付着性が低下すること
になり、このため、上記イソプロピルアルコールに対す
る界面活性剤の濃度を１重量％程度に調整することが望
ましい。(Hereinafter, blank space) Table 2 As is clear from Table 2, in any case,
Although the painted appearance is very good, when the concentration of the conductive surfactant is 1% by weight, the resistance value is about 10 6 Ω, which means that sufficient conductivity can be imparted. Furthermore, if the concentration of the above-mentioned surfactant is 3% by weight or more, the surface resistivity value will further decrease, which in turn will reduce the adhesion of the paint. Therefore, it is desirable to adjust the concentration of the surfactant to the isopropyl alcohol to about 1% by weight.

そして、第２図に示すように、上記のような一連の前処
理、即ち、エツチング処理Ａ、水洗い処理Ｂおよび導電
化処理Ｃが施された上記耐熱性樹脂成形品（イ）を、防
錆を目的とした電着塗装工程りおよび良好な仕上げ面を
得るための中塗り工程Ｅを施された金属製のボディ本体
（ロ）と共に、上塗り工程Ｆに搬送し、該上塗り工程Ｆ
において、上記耐熱性樹脂成形品（イ）と金属製のボデ
ィ本体（ロ）とを同時に静電塗装することができると共
に、その両者を所定の焼付は温度で焼付けることができ
る。As shown in FIG. 2, the heat-resistant resin molded product (A), which has been subjected to a series of pre-treatments as described above, that is, etching treatment A, water-washing treatment B, and conductivity treatment C, is then treated with rust-proofing. Together with the metal body body (B), which has been subjected to an electrodeposition coating process for the purpose of coating and an intermediate coating process E to obtain a good finished surface, it is transported to the top coating process F.
In this method, the heat-resistant resin molded product (a) and the metal body body (b) can be electrostatically coated at the same time, and both can be baked at a predetermined temperature.

（発明の効果） 以上のように、本発明に係る樹脂成形品の塗装方法によ
れば、従来のように合成樹脂成形品の表面に導電性プラ
イマーを塗布する場合に比べて、極めて簡単且つ容易に
耐熱性樹脂成形品に対する塗料の付着性を向上させるこ
とができると共に、該耐熱性樹脂成形品に対する導電化
処理を施すことが可能となって、これにより、極めて安
価にしかも良好に上記耐熱樹脂成形品と金属製部材とを
同時に静電塗装することができると共に、これに件って
、上記耐熱性樹脂成形品と金属製部材とに対する静電塗
装工程の自動化をより一層進めることができる。(Effects of the Invention) As described above, the method for coating resin molded products according to the present invention is extremely simple and easy compared to the conventional method of applying a conductive primer to the surface of a synthetic resin molded product. It is possible to improve the adhesion of paint to heat-resistant resin molded products, and it is also possible to perform conductive treatment on the heat-resistant resin molded products. The molded product and the metal member can be electrostatically coated at the same time, and in this regard, the electrostatic coating process for the heat-resistant resin molded product and the metal member can be further automated.

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

図面は本発明に係る樹脂成形品の塗装方法の実施例を示
すもので、第１図は耐熱性樹脂成形品を静電塗装するた
めの一連の前処理工程を示す概略工程図、第２図は金属
製のボディ本体と耐熱性樹脂成形品とを同時に静電塗装
する場合における−・・連の作業工程を示す概略工程図
である。 ４・・・導電性界面活性剤、（イ）・・・耐熱性樹脂成
形品、（ロ）・・・金属部材（ボディ本体）、Ａ・・・
エツチング処理、Ｂ・・・水洗い処理、Ｃ・導電化処理
、Ｆ・・・静電塗装工程（上塗り工程）。The drawings show an example of the method for coating resin molded products according to the present invention, and FIG. 1 is a schematic process diagram showing a series of pretreatment steps for electrostatically coating a heat-resistant resin molded product, and FIG. 1 is a schematic process diagram showing the following work steps in the case where a metal body body and a heat-resistant resin molded product are electrostatically coated at the same time. 4... Conductive surfactant, (a)... Heat-resistant resin molded product, (b)... metal member (body main body), A...
Etching treatment, B: washing with water, C: conductive treatment, F: electrostatic coating process (top coating process).

Claims (1)

【特許請求の範囲】[Claims] （１）樹脂成形品の表面を静電塗装する方法であって、
上記樹脂成形品を耐熱性樹脂により形成し、且つこの耐
熱性樹脂成形品をエッチング処理したのち、水洗いし、
次いで、その表面に導電性界面活性剤を塗布する導電化
処理を施すと共に、この導電化処理された耐熱性樹脂成
形品を金属製部材と共に静電塗装することを特徴とする
樹脂成形品の塗装方法。(1) A method of electrostatically coating the surface of a resin molded product,
The above-mentioned resin molded product is formed from a heat-resistant resin, and after the heat-resistant resin molded product is etched, washed with water,
Coating of a resin molded product, characterized in that the surface thereof is then subjected to conductive treatment by applying a conductive surfactant, and the conductive treated heat-resistant resin molded product is electrostatically coated together with a metal member. Method.
JP1136948A 1989-05-30 1989-05-30 How to paint resin molded products Expired - Lifetime JP2791102B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1136948A JP2791102B2 (en) 1989-05-30 1989-05-30 How to paint resin molded products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1136948A JP2791102B2 (en) 1989-05-30 1989-05-30 How to paint resin molded products

Publications (2)

Publication Number Publication Date
JPH034970A true JPH034970A (en) 1991-01-10
JP2791102B2 JP2791102B2 (en) 1998-08-27

Family

ID=15187260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1136948A Expired - Lifetime JP2791102B2 (en) 1989-05-30 1989-05-30 How to paint resin molded products

Country Status (1)

Country Link
JP (1) JP2791102B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425947A (en) * 1977-07-29 1979-02-27 Daihatsu Motor Co Ltd Coating method for automobile body
JPS61227874A (en) * 1985-03-29 1986-10-09 Asahi Okuma Ind Co Ltd Energizing treatment of plastic product in electrostatic coating line
JPS6331571A (en) * 1986-07-23 1988-02-10 Toyota Motor Corp Method for painting hood bulge made of fiber reinforced resin
JPS63175672A (en) * 1987-01-13 1988-07-20 Kokusan Kinzoku Kogyo Co Ltd Polyacetal resin molded product by powder coating

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425947A (en) * 1977-07-29 1979-02-27 Daihatsu Motor Co Ltd Coating method for automobile body
JPS61227874A (en) * 1985-03-29 1986-10-09 Asahi Okuma Ind Co Ltd Energizing treatment of plastic product in electrostatic coating line
JPS6331571A (en) * 1986-07-23 1988-02-10 Toyota Motor Corp Method for painting hood bulge made of fiber reinforced resin
JPS63175672A (en) * 1987-01-13 1988-07-20 Kokusan Kinzoku Kogyo Co Ltd Polyacetal resin molded product by powder coating

Also Published As

Publication number Publication date
JP2791102B2 (en) 1998-08-27

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