JPS6249973A - Formation of coated film - Google Patents
Formation of coated filmInfo
- Publication number
- JPS6249973A JPS6249973A JP18734385A JP18734385A JPS6249973A JP S6249973 A JPS6249973 A JP S6249973A JP 18734385 A JP18734385 A JP 18734385A JP 18734385 A JP18734385 A JP 18734385A JP S6249973 A JPS6249973 A JP S6249973A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- coating
- coated
- coated film
- painting
- 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
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は美装、防蝕等を目的として、被塗装素地上に
塗布する塗料の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 applying a paint to a substrate to be painted for the purpose of aesthetics, corrosion prevention, etc.
金属材料及び金属製品のM#I防止等を目的に行われる
塗装においては通常複数回の重ね塗りが行なわれており
1例えば金属材料を塗装する場合、被塗装景地の表面を
ブラスト処理、サンダー研磨等で錆落しや表面付着物の
除去などの目的で下地処理を行い、次に腐蝕防止を主目
的とした下塗り塗装を行い、この塗装が固化乾燥後に、
その上に必要により中間に行う中塗り塗装を行い、これ
が固化乾燥後に、美装を主目的とした上塗り塗装を行う
工程が採用されている。これは下地との密着性や腐蝕防
蝕性の優れた塗料は必ずしも美装上の要求を満足せず、
又美装性に優れ、又塗装表面に接触する環境に対し耐性
のある塗料が必ずしも下地との密着性や腐蝕防蝕性に最
も優れているとはいい難い場合が多く、これらを相補っ
て両方に優れた塗膜を得ようとするものである。又−回
の塗装で生じる可能性のあるピンホール等の欠陥を2回
以上の塗装で残存の確率を低くする意味もあり、場合に
よっては下塗り上塗り両塗膜の密着性が余りよくない場
合や、腐蝕防蝕性を向上させたり、他の塗膜特性を付与
したりする目的で、面塗膜の橋渡し役をする中塗り塗料
を塗装する事も行われている。これらの各塗装工程にお
いては、下塗り塗装で形成された塗膜層が乾燥した後に
次の塗装をするのが、業界において常識となっている。When painting metal materials and metal products for the purpose of preventing M#I, multiple layers are usually applied.1For example, when painting metal materials, the surface of the landscape to be painted is subjected to blasting, sanding, etc. Surface treatment is performed for the purpose of removing rust and surface deposits by polishing, etc., then an undercoat is applied primarily to prevent corrosion, and after this paint has solidified and dried,
On top of that, if necessary, an intermediate coat is applied, and after this has solidified and dried, a top coat is applied primarily for aesthetic purposes. This is because paints with excellent adhesion to the substrate and corrosion resistance do not necessarily satisfy aesthetic requirements.
Also, in many cases, it is difficult to say that a paint that has excellent aesthetic properties and is resistant to the environment in which it comes into contact with the painted surface does not necessarily have the best adhesion to the base or corrosion resistance, so it is difficult to say that the paint has the best adhesion to the base or corrosion resistance. The objective is to obtain a coating film with excellent properties. Also, it is meant to reduce the probability that defects such as pinholes that may occur in two or more coats will remain, and in some cases, the adhesion between the undercoat and top coat may not be very good. For the purpose of improving corrosion resistance or imparting other coating properties, intermediate coatings that act as a bridge between surface coatings are also applied. In each of these painting steps, it is common knowledge in the industry that the next coating is applied after the coating layer formed by the undercoat has dried.
しかしながら、次の様な場合には、下塗り塗料が未硬化
のうちに上塗り塗装をすることも行われて来た。即ち■
焼付型フェノール樹脂系又はアルキッド樹脂系の下塗り
塗料を塗布し、溶剤が揮発後だが未硬化のうちに中塗り
又は上塗り塗料を塗布し、下塗り及び中塗り或いは上塗
り塗料を1回の焼付工程で同時に塗膜を硬化させる方法
は行われている。However, in the following cases, a top coat has been applied while the undercoat is still uncured. That is ■
Apply a baking-type phenolic resin-based or alkyd resin-based undercoat paint, apply an intermediate coat or top coat after the solvent has volatilized but not yet cured, and apply the undercoat and intermediate coat or top coat simultaneously in one baking process. Methods of curing paint films are being used.
■ 同一塗料を複数回スプレー塗装して、塗膜の厚みを
増加させたり、前記のピンホール残存を防止する場合に
、何回もスプレーガンを往復させて目標とする厚膜塗膜
を形成する場合には、同一塗料であるので、下塗りの湿
潤状態で上塗りを行うことは行われている。■ When spraying the same paint multiple times to increase the thickness of the paint film or to prevent the aforementioned pinholes from remaining, the spray gun is moved back and forth many times to form the desired thick paint film. In some cases, since the paint is the same, the top coat is applied while the base coat is still wet.
■ 特公昭60−17588号公報に開示されている如
く、下塗り塗料と上塗り塗料の主成分が同種のビヒクル
である場合には、下塗り塗膜が完全硬化する前に上塗り
塗料を塗布することは行われている。■ As disclosed in Japanese Patent Publication No. 60-17588, if the main components of the undercoat and topcoat are the same vehicle, it is not recommended to apply the topcoat before the undercoat is completely cured. It is being said.
■の方法は通常ならば2回の焼付けを必要とするが、そ
れを1回の焼付けで下塗り塗膜と上塗り塗膜とを同時に
硬化させることにより、工程の短縮を図るものであるが
、下塗り塗膜は未硬化の状態ではあるが、指触乾燥以後
の塗膜状態となってから上塗り塗料を塗布するもので、
しかも焼付けることにより初めて目的とする塗膜が形成
されるものであり、下塗り塗膜の湿潤(wet)状態の
時に塗装するものでもなく、しかも常温硬化型の塗料で
もない。Method (2) normally requires two baking steps, but by curing the undercoat and topcoat at the same time in one baking, the process is shortened. Although the paint film is in an uncured state, the top coat is applied after it is dry to the touch.
Moreover, the desired coating film is formed only by baking, and it is not applied when the undercoat film is wet, nor is it a room-temperature curing type coating.
■の場合は、同一の塗料であるので、2回以上の塗装に
よる相互作用は考えられず、下塗りが湿潤状態で上塗り
しても問題は起らないことは明白であるので行われてい
るが、本発明のように別品種の塗料を塗布するものでは
ない。In the case of (2), since the paint is the same, there is no possibility of interaction between two or more coats, and it is clear that no problem will occur even if the undercoat is wet and the topcoat is applied. However, unlike the present invention, different types of paint are not applied.
■の場合も、下塗り塗料と上塗り塗料とは、両者共エポ
キシ樹脂又は変性エポキシ樹脂塗料であって、その主成
分となるビヒクルが同系の塗料を使用するもので厳密な
意味での別品種の塗料ではない。In the case of (2), both the undercoat paint and the topcoat paint are epoxy resin or modified epoxy resin paints, and the main component vehicle is the same type of paint, so they are strictly different types of paints. isn't it.
このように、同一種の塗料については、下塗りがウェッ
トのうちに上塗りを塗装することは行われているが、別
品種(例えば通商産業調査会発行「化学工業統計月報」
の塗料分類による)の樹脂について、下塗りがウェット
のうちに上塗りを塗装することは行われていない。In this way, for the same type of paint, it is customary to apply the top coat while the undercoat is still wet, but it is common practice to apply the top coat while the base coat is still wet;
For resins (according to paint classification), the top coat is not applied while the base coat is wet.
特開昭60−92365号公報では、ベースコート上に
ウェットオンウェット方式によって塗装すべき上塗用ク
リヤー塗料組成物が提案されているが、ベースコート用
塗料はアクリルシルバーメタリック塗料、ポリエステル
ホワイト塗料、アクリルシルバーメタリック塗料のいず
れかで、2液反応型下塗り塗料としてはアクリル樹脂イ
ソシアネート硬化塗料のみがあげられている。この上に
アクリル重合体と希釈剤、架橋剤に粒径0.01ないし
10〆苓ある架橋重合体微粒子を加えたクリヤー塗料組
成物を上塗りするものであって、ベースコート塗料が1
液型を主とし、2液型の場合は上塗りも2液型で同種と
は言えないが同系統の塗料を使用している。又自動車の
ライン塗装を指向したもので。JP-A No. 60-92365 proposes a top coat clear paint composition to be applied on a base coat by a wet-on-wet method. In either case, only an acrylic resin isocyanate curing paint is cited as a two-component reactive undercoat paint. This is coated with a clear paint composition containing an acrylic polymer, a diluent, a crosslinking agent, and crosslinked polymer fine particles having a particle size of 0.01 to 10 mm, and the base coat paint is 1.
Mainly liquid type, and in the case of two-component type, the top coat is also two-component, and although it cannot be said to be the same type, it uses the same type of paint. It is also aimed at line painting of automobiles.
本発明の如く、建築物、橋梁、タンクなどの大型構成物
を指向したものでなく、組成物自体も異る。Unlike the present invention, the present invention is not intended for large structures such as buildings, bridges, and tanks, and the composition itself is different.
従来の塗装工程では、例えば下塗り塗装工程と中塗り塗
装工程との間や中塗り塗装工程と上塗り塗装工程との間
の乾燥工程で、ごみやほこり等の異物が塗装面に付着す
ると、各塗膜層間の付着力が不充分となり、層間剥離の
問題が発生することはよく知られている現象である。そ
の上、従来の工程では、下地処理から上塗り塗装までの
作業期間が長くなり、大型建造物や橋梁などではそれだ
け塗装経費が高くなるという問題もあった。In conventional painting processes, if foreign matter such as dirt or dust adheres to the painted surface during the drying process between the undercoating process and the intermediate coating process, or between the intermediate coating process and the topcoating process, each coating It is a well-known phenomenon that the adhesion between film layers becomes insufficient, leading to delamination problems. Furthermore, in the conventional process, the work period from base preparation to topcoat painting is long, and there is also the problem that painting costs increase accordingly for large buildings and bridges.
本発明は、かかる観点に鑑みて創案されたもので、従来
の塗装方法とは異る塗膜形成方法を提供し、工期を短縮
することにより塗装経費の低減を図り、ごみやほこりに
よる層間剥離の問題をも解決しようとするものである。The present invention was devised in view of this point of view, and provides a coating film forming method different from conventional coating methods, which reduces coating costs by shortening the construction period, and reduces delamination due to dirt and dust. It also attempts to solve the problem of
本発明は被塗装素地に2液反応型下塗り塗料を塗布し、
その塗膜が指触乾燥前の湿潤状態のうちに、1液型の上
塗り塗料を塗布することを特徴とする塗膜形成方法であ
る。The present invention applies a two-component reactive undercoat paint to the substrate to be painted,
This coating film forming method is characterized in that a one-component top coat is applied while the coating film is in a wet state before it is dry to the touch.
2液反応型下塗り塗料としては、エポキシ樹脂又はウレ
タン樹脂塗料が好適である。2液反応型塗料としては、
常温で液状の比較的低分子量の樹脂でもよいが、常温で
固形の樹脂の方が好ましい。Epoxy resin or urethane resin paint is suitable as the two-liquid reactive undercoat paint. As a two-component reactive paint,
Although a relatively low molecular weight resin that is liquid at room temperature may be used, a resin that is solid at room temperature is preferred.
エポキシ樹脂系の下塗り塗料に使用する樹脂としては、
エピクロールヒドリンとビスフェノールAとの反応によ
って得られる通常のエポキシ樹脂でよく、具体的にはエ
ピコート(シェル化学登録商標) 828.834.1
001.1004.1007.1009等、アラルダイ
ト(日本チバガイギー登録商標) 6071゜7071
、6084.7097.6097等、スミエポキシ(住
友化学登録商標) ESA−011,014等の汎用樹
脂で良い。The resins used in epoxy resin undercoat paints include:
Any ordinary epoxy resin obtained by the reaction of epichlorohydrin and bisphenol A may be used, specifically Epicote (Shell Chemical Registered Trademark) 828.834.1
001.1004.1007.1009 etc., Araldite (Japan Ciba Geigy registered trademark) 6071°7071
, 6084.7097.6097, Sumiepoxy (Sumitomo Chemical registered trademark) ESA-011,014, and other general-purpose resins may be used.
この際使用するエポキシ樹脂用硬化剤はポリアミド系硬
化剤が好ましい。他の配合材としては、クマロン樹脂1
万油樹脂、あるいはホワイト・タール等の増量材、シリ
カ、タルク、炭酸カルシウム等の体質顔料、弁柄、酸化
チタン、カーボンブラック等の着色顔料、有機ベントナ
イト、無水珪酸微粉末等の揺変性付与剤等それに溶剤を
必要に応じて使用し得る。The curing agent for epoxy resin used in this case is preferably a polyamide curing agent. Other compounding materials include Cumaron resin 1
Extending agents such as oil resin or white tar, extender pigments such as silica, talc, and calcium carbonate, coloring pigments such as Bengara, titanium oxide, and carbon black, and thixotropic agents such as organic bentonite and silicic anhydride fine powder. A solvent may be used if necessary.
ウレタン樹脂系塗料に使用する樹脂としては通常のポリ
エステル、水酸基含有のエポキシ樹脂。The resins used in urethane resin paints include regular polyester and hydroxyl group-containing epoxy resins.
或いは、エポキシ樹脂をアルカノールアミンで変性して
水酸基数を増加させた変性エポキシ樹脂等のビヒクルと
それ等の樹脂を硬化させる活性イソシアネート基含有樹
脂等を組み合せて使用する。Alternatively, a vehicle such as a modified epoxy resin in which the number of hydroxyl groups is increased by modifying an epoxy resin with an alkanolamine is used in combination with a resin containing active isocyanate groups for curing the resin.
イソシアネート基含有樹脂としてメチレンイ″ソシアネ
ート(MDI)系、トリレンジイソシアネート(TDI
)系、ヘキサメチレンジイソシアネート(HMDI)系
等が一般的に知られているが、それらの何れでも使用可
能である。しかしMDI系及びTDI系の樹脂の使用は
、それが上塗り塗膜の表層に浮き出て塗膜が、経時的に
変色することがあるが、HMDI系の樹脂を硬化剤とし
て使用すれば、その様な現象は生じない。その他の配合
材としては前述のエポキシ樹脂系塗料に使用するものが
、任意に使用し得る。しかし下塗り塗料としてエポキシ
樹脂系又はウレタン樹脂系樹脂に増量材としてタール或
いはアスファルト類の瀝青物又はこれ等と同等の性質を
有するタール油樹脂を添加したものは、その湿潤(−e
t )状態の上に上塗り塗料を塗布すると塗装置後、前
記の瀝青質がブリードするので、防蝕性に重点をおき、
美装がそれ程求められない場合にはよいが、美観を要求
される場合にはその様な瀝青質あるいはタール油樹脂等
を含有した塗料は下塗り塗料としては使用しない方が好
ましい。As isocyanate group-containing resins, methylene diisocyanate (MDI) type, tolylene diisocyanate (TDI) type
) type, hexamethylene diisocyanate (HMDI) type, etc. are generally known, but any of them can be used. However, the use of MDI and TDI resins may cause them to stand out on the surface of the top coat and cause the paint film to change color over time; however, if HMDI resins are used as a curing agent, this will not happen. No such phenomenon occurs. As other compounding materials, those used in the above-mentioned epoxy resin paints can be used as desired. However, if a bituminous material such as tar or asphalt, or a tar oil resin having properties equivalent to these is added as an extender to an epoxy resin or urethane resin as an undercoat, its moisture (-e
t) If a top coat is applied over the condition, the above-mentioned bituminous substance will bleed out after the coating is applied, so emphasis should be placed on corrosion resistance.
This is good when aesthetics are not so required, but when aesthetics are required, it is preferable not to use paints containing bituminous substances or tar oil resins as undercoat paints.
上塗り塗料としては、溶剤揮発型の合成樹脂塗料である
塩化ゴム系塗料、アクリル樹脂塗料あるいは酸化重合型
のアルキッド樹脂塗料等がある。Examples of the top coat include chlorinated rubber paints that are solvent-volatile synthetic resin paints, acrylic resin paints, and oxidative polymerization alkyd resin paints.
その他アルキッド樹脂含有塩化ゴム系塗料も使用できる
。Other alkyd resin-containing chlorinated rubber paints can also be used.
本発明は、前記の2液反応型下塗り塗料を塗装した後、
下塗り塗膜が湿潤状態のうちに上塗り塗料を塗布すると
″ころに最大の特徴を有する。In the present invention, after applying the two-component reactive undercoating paint,
The main feature is that the top coat is applied while the base coat is still wet.
この湿潤(wet)状態とは、JIS K−5400−
1970「塗料一般試験方法5.10Jに記載されてい
る指触乾燥前の状態を指すものである。従来からの常識
でいえば下塗りと上塗りと異った品種の塗料を重ね塗り
すると層間剥離、塗膜のふくれ1発泡あるいは乱れなど
生ずるとの先入値から、このような塗装方法は行われて
いなかったのが実状である。This wet state is defined by JIS K-5400-
This refers to the condition before dry to the touch as described in 1970 "General Test Methods for Paints 5.10J. Conventional common sense has it that when different types of paints are applied as an undercoat and a topcoat, interlayer separation occurs. The reality is that such a coating method has not been used because of the preconception that blistering, foaming, or disturbances will occur in the coating film.
しかし、本発明者等は、この様な塗装ができれば、工期
がかなり短縮され、経済的に大きな利益があることが考
えられることから、あえて常識に反する湿潤状態での重
ね塗りを研究した結果、本発明のような下塗りと上塗り
の組み合せを採用すると何ら防蝕性に欠陥のない塗膜が
形成される事を見出し、本発明を完成させた。However, the present inventors thought that if this type of coating could be applied, the construction period would be considerably shortened and there would be significant economic benefits.As a result, the inventors deliberately researched recoating in wet conditions, which goes against common sense. The inventors have discovered that by employing the combination of undercoat and topcoat as in the present invention, a coating film with no defects in corrosion resistance can be formed, and the present invention has been completed.
一見、不合理に見える、この塗膜形成法は常識を逸脱し
ているかのように見えるが、その結果は驚くべき水準に
ある。下塗り塗膜が末だ湿−潤(wet)状態のうちに
上塗り塗料を塗布するのであるが°ら。At first glance, this method of forming a coating film seems absurd, as if it goes beyond common sense, but the results are of a surprising level. The top coat is applied while the base coat is still wet.
当然下塗り塗膜成分と上塗り塗膜成分とが、その界面で
混り合った複合塗膜が形成される。良好な結果が得られ
る理由は定かではないが、塗料中の溶剤組成の違い、あ
るいは一種の溶剤ショック等により、−気に下塗り塗膜
と上塗り塗膜の各成分が混り合うことがなく、両者の界
面のみが混合層として存在するためと考えられる。下塗
り塗料にエポキシ樹脂系又はウレタン樹脂系などの2液
反応型を使用し、上塗り塗料として、塩化ゴム系又はア
クリル樹脂系又はアルキッド樹脂系を塗布すると、検収
硬化機構が異るので更に良好な結果が得られるものと考
えられる。この場合、下塗り塗料に使用する塗料のビヒ
クルとして、分子量が大きい常温で固形であるものが望
ましい。Naturally, a composite coating film is formed in which the undercoat film component and the topcoat film component are mixed at the interface. The reason why good results are obtained is not clear, but it may be due to differences in the solvent composition in the paint or a type of solvent shock, etc. - The components of the undercoat and topcoat do not mix together, and This is thought to be because only the interface between the two exists as a mixed layer. If you use a two-component reaction type such as an epoxy resin or urethane resin as the undercoat and apply a chlorinated rubber, acrylic, or alkyd resin as the topcoat, the acceptance curing mechanism will be different, so even better results will be obtained. It is thought that this can be obtained. In this case, the paint vehicle used for the undercoat is preferably one that has a large molecular weight and is solid at room temperature.
塗装方法としては、通常のエアスプレーあるいはエアレ
ススプレーによるのが良い。ハケ塗り又はローラー塗り
等は、下塗り塗膜が湿潤状態であることから、その施工
は困難である。本発明を達成するには、2人の塗装者が
うち1人が下塗りをし、他の人が直ちに上塗りをすれば
良いが、足場上での塗装になると、作業上の危険が伴い
、しかもこのような塗装は困難であることが多い。しか
し1台の塗装機に2つのスプレーノズルを組み込み、第
1のスプレーノズルで下塗りを塗装し、第2のスプレー
ノズルで上塗りを塗布するようにすれば、1回の塗装機
の運行で本発明の目的とする塗膜が形成されるため塗装
経費を極端に低減することができる。As for the painting method, it is best to use regular air spray or airless spray. Brush painting, roller painting, etc. are difficult to apply because the undercoat film is in a wet state. To achieve the present invention, one of the two painters should apply the undercoat and the other should immediately apply the topcoat, but painting on scaffolding involves work hazards, and Such coatings are often difficult. However, if two spray nozzles are installed in one coating machine, and the first spray nozzle applies the undercoat and the second spray nozzle applies the topcoat, the present invention can be applied in one operation of the coating machine. Since the desired coating film is formed, coating costs can be drastically reduced.
この様な塗装機に更に下地処理をする装置を組み込んで
おけば、通常の塗装工程である1連の下地処理→下塗り
→上塗りの各工程が一度の塗装機の運行で行えるので5
作業も効率的となり、経費も更に節減される。If such a coating machine is further equipped with a device for surface treatment, each step of the normal painting process of base treatment, undercoat, and topcoat can be performed in one operation of the paint machine.
Work becomes more efficient and costs are further reduced.
塗装膜厚は、特にこのため限定されることはなく、任意
にその目的に応じて決定すればよいが、防蝕性を考慮す
れば下塗り塗料はその乾燥膜厚が60〜250μm、好
ましくは100〜120μmになるようにし、上塗り塗
料はその乾燥膜厚を10〜50μm。The coating film thickness is not particularly limited for this reason and may be arbitrarily determined depending on the purpose, but in consideration of corrosion resistance, the dry film thickness of the undercoat should be 60 to 250 μm, preferably 100 to 250 μm. The dry film thickness of the top coat should be 10 to 50 μm.
好ましくは20〜30μmになるように塗布すればよし
λ 。Preferably, the coating should be applied to a thickness of 20 to 30 μm.
塗布後は通常の状態で乾燥させる。この塗膜は、従来の
如く、下塗り塗料を乾燥させた上に上塗り塗料を塗布し
たものとくらべて、性能上遜色のないものである。After application, dry under normal conditions. This coating film is comparable in performance to a conventional coating in which an undercoat is dried and then a topcoat is applied.
〔実施例1〕
被塗装素地として、150 X 70 X 1mmの軟
鋼板を脱脂した後ショツトブラスト処理して得られた試
験板を使用した。この試験板の表面に2液反応型のウレ
タン樹脂系塗料(新日鐵化学(株)商品名:NBコート
3000 G Wグレー色)にシンナーを約5%添加し
て、乾燥後の膜厚が100〜120μmとなるようにエ
アレススプレ一方式で塗布し、直ちに白色の塩化ゴム系
合成樹脂塗料(新日鐵化学(株)商品名二NBコートC
R−503塩化ゴム上塗り)又はアルキッド樹脂系塗料
(新日鐵化学(株)商品名二NBコートFE−503上
塗り)にシンナーを約20重量%添加して、乾燥後の膜
厚が20〜30μmとなるようにエアスプレ一方式で塗
布した。20±1℃の温度、湿度(R,H,) 75±
5%の恒温恒湿槽内で7日間養生した。[Example 1] As a substrate to be coated, a test plate obtained by degreasing a 150 x 70 x 1 mm mild steel plate and then subjecting it to shot blasting treatment was used. Approximately 5% thinner was added to the surface of this test plate in a two-component reactive urethane resin paint (product name: NB Coat 3000 GW gray color, manufactured by Nippon Steel Chemical Co., Ltd.), and the film thickness after drying was Apply with an airless spray method to a thickness of 100 to 120 μm, and immediately apply white chlorinated rubber synthetic resin paint (Nippon Steel Chemical Co., Ltd., trade name 2NB Coat C).
Approximately 20% by weight of thinner is added to R-503 chloride rubber topcoat) or alkyd resin paint (Nippon Steel Chemical Co., Ltd. trade name 2NB Coat FE-503 topcoat) to give a film thickness of 20 to 30 μm after drying. It was applied using an air spray method so that Temperature of 20±1℃, humidity (R, H,) 75±
It was cured for 7 days in a 5% constant temperature and humidity chamber.
このようにして形成された各複合塗膜について、各種試
験を行った。結果を第1表に示す。なお、比較として、
従来の塗装間隔(下塗り塗装後16時間乾燥した後、上
塗り塗布)で塗装した塗膜を同時に試験した。Various tests were conducted on each of the composite coating films thus formed. The results are shown in Table 1. For comparison,
Coatings applied with conventional coating intervals (basecoat applied, dried for 16 hours, then topcoat applied) were tested at the same time.
〔実施例2〕
実施例1と同じ試験板を使用し、同じ下地処理を行った
上に、下塗りに2液反応型のエポキシ樹脂系塗料(新日
鐵化学(株)商品名:NBコートEPブルー)を使用し
た以外は、実施例1と同一の上塗りを塗布し、同じよう
に養生した。その塗膜の試験結果を第2表に示す。[Example 2] The same test plate as in Example 1 was used, the same base treatment was applied, and a two-component reactive epoxy resin paint (Nippon Steel Chemical Co., Ltd. product name: NB Coat EP) was used as the undercoat. The same topcoat as in Example 1 was applied, except that blue) was used, and the coating was cured in the same manner. The test results for the coating film are shown in Table 2.
Claims (3)
の塗膜が指触乾燥前の湿潤状態のうち、1液型の上塗り
塗料を塗布することを特徴とする塗膜形成方法。(1) A method for forming a coating film, which comprises applying a two-component reactive undercoating paint to a substrate to be coated, and then applying a one-component topcoat paint while the coating film is wet before being dry to the touch.
ポキシ樹脂系であることを特徴とする特許請求の範囲第
1項記載の塗膜形成方法。(2) The coating film forming method according to claim 1, wherein the two-component reactive paint for the undercoat is a urethane resin-based or an epoxy resin-based paint.
クリル樹脂系から選ばれた常温乾燥型塗料である特許請
求の範囲第1項記載の塗膜形成方法。(3) The method for forming a coating film according to claim 1, wherein the top coating is a room temperature drying coating selected from chlorinated rubber, alkyd resin, and acrylic resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18734385A JPS6249973A (en) | 1985-08-28 | 1985-08-28 | Formation of coated film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18734385A JPS6249973A (en) | 1985-08-28 | 1985-08-28 | Formation of coated film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6249973A true JPS6249973A (en) | 1987-03-04 |
JPH0366940B2 JPH0366940B2 (en) | 1991-10-21 |
Family
ID=16204335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18734385A Granted JPS6249973A (en) | 1985-08-28 | 1985-08-28 | Formation of coated film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6249973A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03101122U (en) * | 1990-01-26 | 1991-10-22 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59222267A (en) * | 1983-05-30 | 1984-12-13 | Dainippon Toryo Co Ltd | Formation of paint coated film |
-
1985
- 1985-08-28 JP JP18734385A patent/JPS6249973A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59222267A (en) * | 1983-05-30 | 1984-12-13 | Dainippon Toryo Co Ltd | Formation of paint coated film |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03101122U (en) * | 1990-01-26 | 1991-10-22 |
Also Published As
Publication number | Publication date |
---|---|
JPH0366940B2 (en) | 1991-10-21 |
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