JPS6096789A - Formation of color pattern to aluminum or alloy thereof - Google Patents

Abstract

PURPOSE:To easily apply a grain pattern to aluminum, by floating a paint on the surface of flowing water and immersing aluminum to form a grain pattern coating before performing surface conditioning treatment and electrolytic coloration. CONSTITUTION:A paint is added to the surface of flowing water in a bath tank to float a multi-line like or a water ring like pattern and aluminum or its alloy is immersed in this paint bath tank and raised while the loosely adhered paint is removed by washing to adhere a masking of a coating with a grain pattern. Succeedingly, a film such as a chemical film, anodic oxidized film, barrier type film or color oxide film is formed to the unmasked part or etching treatment is performed and, thereafter, the mask coating is peeled off by an org. peel-off agent. Thereafter, coloration is performed by an electrolytic method to easily apply a pattern strikingly similar to the regular grain or wooden grain of natural wood even to a shaped material having a complicated shape so as to develop three-dimensional appearance, if necessary.

Description

【発明の詳細な説明】 本発明は、アルミニウムまたはその合金の表面に染料あ
るいは顔料音用いることなく着色模様を形成できる方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a colored pattern on the surface of aluminum or its alloy without using dyes or pigments.

従来、アルミニウム上に着色模様を形成する方法として
は、アルミニウム素材上にレジスト膜を模様通りに塗布
畦たは印刷した後、第１次陽極酸化処理によりバリヤ型
皮膜を形成し、レジスト膜を除去したのち陽極酸化処理
により着色皮膜を生成させ模様全表出する方法、すなわ
ち模様印刷→Ｉ次陽極酸化処理→（封孔）→レジスト膜
除去→２次陽極酸化処理（電解発色）、または模様印刷
→化学皮膜処理→レジスト膜除去→化成処理（化学的着
色皮膜の生成）の工程を組む方法が特公昭５２−３８９
５号、特開昭５０−４　＋７３５号または特公昭５０−
４６１６号により知られている。また、同様に模様付け
に印刷工程を必要とする方法として、ＴＦＳ塗膜上にさ
らにスクリーン印刷、オフセット印刷による塗膜印刷で
所望の模様付けを行なった後、再度上記ＴＦＳ塗膜およ
び模様付はインキを同時に乾燥焼付する特公昭５１−２
１０２２号の方法が知られている。しか（７ながら、こ
れらの方法では模様付けは印刷法によらないと困難であ
り、捷だ印刷法によって模様付けを行なう場合には印刷
に多くの時間と経費全必要とし、量産性もしくは生産性
の面で問題があり、さらに画一的な模様しかえられず、
多種多様のｓ様かえられにくい欠点がある。Conventionally, the method of forming a colored pattern on aluminum is to apply a resist film on the aluminum material according to the pattern, ridge or print it, form a barrier type film through a first anodization treatment, and then remove the resist film. After that, a method of generating a colored film through anodizing treatment to reveal the entire pattern, i.e., pattern printing → first anodizing treatment → (sealing) → resist film removal → second anodizing treatment (electrolytic coloring), or pattern printing. →Chemical film treatment→Resist film removal→Chemical conversion treatment (creation of chemically colored film)
No. 5, JP-A-50-4 +735 or JP-A-50-
It is known from No. 4616. Similarly, as a method that requires a printing process for patterning, the desired pattern is further applied to the TFS coating film by screen printing or offset printing, and then the above TFS coating film and patterning are applied again. Special Publication Showa 51-2, where ink is dried and baked at the same time
The method of No. 1022 is known. However, with these methods, it is difficult to create a pattern without using a printing method, and if the pattern is created using a round printing method, printing requires a lot of time and expense, and this reduces mass production or productivity. There is a problem with this, and only a uniform pattern can be obtained.
There are a wide variety of s-like drawbacks that make it difficult to change.

模様付けを印刷法によらない方法としては、アルカリ性
嘗解質浴にバリヤ型皮膜形成電解質を加えた浴中で又流
もしくｌｒｌ：これと同様の効果をもつ波形にＪ：ｖ電
解し、木目模様を形成し、電ＰＮ、着色させる方法とし
て特開昭５’２−６０２４４号が知られており、また、
陽極酸化処理後、電解によるバリヤ層の調整によりのち
の電解着色によって模様を出す方法と、して特開昭５２
−３５３５号、特開昭５２−６１１３９号、特開昭５２
−’７０９５１号知られている。Ｌ、かじながら、バリ
ヤ層の厚さ金変えてのちの電解着色により着色模様を形
成する方法は、複雑な形状を有する形材には適用できに
〈＜、また、バリヤ層の調整が困難であり、生産性の面
で問題がある。一方、特開昭５２−６０２１５４号の方
法は、複雑な形状の形材に対し、でも適用できるが、こ
の方法によって得られる模様は食刻状で短かい縦ストラ
イプ状の模様であり、柾目状に類似してはいるが天然の
柾目状に近いものではなく、また板目状の模様は形成で
きない。As a method of patterning without using the printing method, J:v electrolysis is carried out in a bath containing an alkaline lysate bath plus a barrier type film-forming electrolyte to create a waveform having the same effect as that of J:v or lrl: Japanese Unexamined Patent Application Publication No. 5'2-60244 is known as a method for forming a wood grain pattern and coloring it.
After anodizing treatment, a barrier layer is adjusted by electrolysis, and then a pattern is produced by electrolytic coloring.
-3535, JP-A-52-61139, JP-A-52
-'70951 is known. However, the method of changing the thickness of the barrier layer and then forming a colored pattern by electrolytic coloring cannot be applied to shapes with complex shapes.Also, it is difficult to adjust the barrier layer. There are problems in terms of productivity. On the other hand, the method of JP-A No. 52-602154 can be applied to shapes with complex shapes, but the pattern obtained by this method is an engraved pattern of short vertical stripes, and a straight-grained pattern. Although it is similar to the natural straight-grain pattern, it is not close to the natural straight-grain pattern, and it cannot form a board-like pattern.

本発明は、上記の点に鑑み、複雑な形状の形材にも容易
に模様付けができ、天然木材の柾目および板目状に酷似
する模様付けを簡単にできる方法を提供しようとするも
のであり、浸漬塗装法によって柾目および板目の模様状
の塗膜でマスキングすることにより上記模様付けを容易
にできることを特徴とし、さらに上記マスキング後にエ
ツチング（食刻）することにより立体観を表出できるこ
とをも特徴とする。In view of the above-mentioned points, the present invention aims to provide a method that can easily pattern even complex-shaped shapes and easily pattern patterns that closely resemble the straight-grained and board-grained shapes of natural wood. Yes, the above-mentioned patterning can be easily achieved by masking with a coating film with a straight-grained or board-grained pattern using a dip coating method, and furthermore, a three-dimensional appearance can be expressed by etching after the above-mentioned masking. It is also characterized by

本発明の方法について説明すると、まずアルミニウムま
たはアルミニウム合金（以下、処理材ということもある
）全常法に従い、脱脂、水洗、乾燥などの処理をし、必
要に応じてエツチング、スマット除去など全行なった後
、後に詳述するように流動する水の力によって塗料全長
線状もしくは波紋状に浮遊δせた塗料浴槽に浸漬し、木
目状に模様を付着させる。この除、塗料が多線状に浮遊
している塗料浴槽に浸漬した場合は柾目状の模様が形成
され、波紋状の場合は板目状の模様が形成される。つい
で、処理材全塗料浴槽から引き上け、その際にゆるく再
付着した塗料を水洗し、自然乾燥もしくは適当な刀り熱
器を用いて乾燥させ、木目模様状の塗膜を形成させる。To explain the method of the present invention, first, aluminum or aluminum alloy (hereinafter sometimes referred to as treated material) is treated by degreasing, washing with water, drying, etc. in accordance with all conventional methods, and if necessary, etching, smut removal, etc. After that, as will be described in detail later, the material is immersed in a paint bath in which the entire length of the paint is suspended in a line or ripple shape due to the force of flowing water, and a pattern in the form of wood grain is attached. If the paint is immersed in a paint bath in which the paint is floating in a multi-line pattern, a straight-grained pattern will be formed, and if it is rippled, a board-like pattern will be formed. Next, all of the treated material is pulled up from the paint bath, and the loosely reattached paint is washed with water and dried naturally or using a suitable knife heater to form a wood grain-patterned paint film.

なお、処理材の引き上げ時は、処処理材は濡れの状態で
あり、そのゆるく付着（再付着）した塗料は、水洗槽で
エアー攪拌等により容易に除去できる。その水洗槽に界
面活性剤を少量添加しておくとより効果的である。Note that when the treated material is pulled up, the treated material is in a wet state, and the loosely adhered (re-deposited) paint can be easily removed by air agitation or the like in a washing tank. It is more effective to add a small amount of surfactant to the washing tank.

このようにして、処理材に木目模様状の塗膜でマスキン
グ１．′ｆｃ後、次工程の表面調整処理を行なう。この
表面調整処理は、後の陽極酸化処理においてマスキング
部と露出部との膜質に違いを出すことを目的とするもの
で、露出部に通常の化成処理による化学皮膜、硫酸など
の電解浴での陽極酸化処理による陽極酸化皮膜、無機＋
１２または有機酸電解浴での高電圧印加にょるバリヤ型
皮膜もしくは有機酸電解浴での陽極酸化処理による着色
酸化皮膜などの皮膜を形成式せる。その後、マスキング
塗膜を浴剤、硫酸、有機剥離剤等で除去し、必要に応じ
て水洗、乾燥などを行なった後、通常の有機酸電解浴で
の陽極酸化処理によって着色酸化皮膜を形成させるか、
あるいは陽極酸化処理し、た後に金属塩を含有する電解
浴で電解着色を行なう。In this way, masking the treated material with a wood grain pattern coating 1. After 'fc, the next step of surface conditioning treatment is performed. The purpose of this surface conditioning treatment is to create a difference in the film quality between the masked area and the exposed area during the subsequent anodizing process. Anodic oxide film by anodic oxidation treatment, inorganic +
12 or by applying a high voltage in an organic acid electrolytic bath to form a barrier type film or a colored oxide film by anodizing in an organic acid electrolytic bath. After that, the masking coating film is removed using a bath agent, sulfuric acid, an organic stripping agent, etc., and after washing with water and drying as necessary, a colored oxide film is formed by anodizing treatment in a normal organic acid electrolytic bath. mosquito,
Alternatively, after anodizing, electrolytic coloring is performed in an electrolytic bath containing a metal salt.

本発明の他の方法は、前記の方法と同様に処理材に木目
模様状の塗膜全マスキングし、た後、表面調整処理とし
てエツチング（食刻）を行なう。このエツチング処理に
よって、出来上り製品としてほぼ天然木材を加工したも
のと同じ蝕感、凹凸の立体観のものが得られる。その後
の処理は前記の方法と同様に行なう。In another method of the present invention, the treated material is entirely masked with a wood grain pattern coating in the same way as the above method, and then etching is performed as a surface conditioning treatment. This etching process provides a finished product with a three-dimensional appearance with the same texture and unevenness as those obtained by processing natural wood. The subsequent processing is carried out in the same manner as the method described above.

前記模様付は塗装によるマスキング処理方法について説
明すると、七の一つの方法は、流動している水が張られ
ている浴槽の一方から、塗料全数ケ所から多線状に流し
込み、塗料を浮遊状態で流動させ、流し込み口の反対側
に設けであるオーバーフロー樋にオーバーフローする前
に水の流動と塗料の流し込み？止め、処理材を縦吊りで
浸漬し、木目状に塗料を付’ＭＧせる。To explain the above-mentioned masking method by painting, one method is to pour the paint in multiple lines from one side of the bathtub filled with flowing water, leaving the paint in a floating state. Flow the water and pour the paint before overflowing into the overflow gutter located on the opposite side of the pour inlet? Then, hang the treated wood vertically and dip it in the water to apply paint in the shape of wood grain.

その処理条件としては、処理材は乾燥していることおよ
び縦吊りで処理することが好ましく、処理材の長さに対
して凶〜γ３の液面幅（梧１１１ｔ％）の浴槽を用いた
方が好ましい。十分な検電がとれない場合は、処理材の
浸ｆＤｊスピードに対し、て木目状の細い線が連続して
生じるように塗料の流量全調整しながら流し込む方法を
採用する。このようにして模様付は塗装を行なった場合
、柾目状の模様が形成される。As for the processing conditions, it is preferable that the material to be treated be dry and hung vertically, and that a bathtub with a liquid level width of γ3 to γ3 (111 t%) relative to the length of the material to be treated is preferable. is preferred. If sufficient voltage detection cannot be obtained, a method is adopted in which the paint is poured while adjusting the flow rate of the paint so that fine lines in the form of wood grain are produced continuously depending on the immersion speed fDj of the treated material. When the pattern is painted in this way, a straight-grained pattern is formed.

その他、板目状の模様付けを行なう場合には、流動状態
下の水面に塗料を点滴し、波紋を生じさせ、処理材の浸
漬スピードに合わせて波紋状に塗料層を供給する。In addition, when creating a plate-like pattern, paint is dripped onto the water surface in a flowing state to create ripples, and the paint layer is supplied in a ripple pattern in accordance with the dipping speed of the treated material.

以上のような方法において、処理材の浸漬につれて、水
面に浮遊する塗料が処理材の表面にその下端から順次木
目状に付着する。In the method described above, as the treated material is immersed, paint floating on the water surface adheres to the surface of the treated material in a grain pattern starting from the lower end.

塗料を浮遊きせる液には水を使、つするが、その中に界
面活性剤を添加すると作業性がエリ向上する。Water is used to make the paint float, and adding a surfactant to it improves workability.

模様付は用塗料としては、アクリル系樹脂節料、例えば
変性アクリルラッカー（アクリル樹脂／ニトロセルロー
ス）等、アルキッド系樹脂塗料、例えばバインリッドラ
ッカー（安息香酸変性アルキッド４ｔｌ脂／ニトロセル
ロース）等、などを用いることが好ましいが、これらに
限定されるものではない。なお、処理材全浸漬時に塗料
を付着させる際、途中で模様に切れが生じると美しい模
様が得られないので、場合によってはマイクロフィルム
全少量添加（て塗料層を補強することが好ましい。Paints for patterning include acrylic resin-saving paints, such as modified acrylic lacquer (acrylic resin/nitrocellulose), alkyd resin paints, such as vine lid lacquer (benzoic acid-modified alkyd 4TL fat/nitrocellulose), etc. Although it is preferable to use these, the invention is not limited to these. Note that when applying the paint while the treated material is completely immersed, if the pattern is cut during the process, a beautiful pattern will not be obtained, so in some cases it is preferable to add a small amount of microfilm (to reinforce the paint layer).

以上のように、本発明においては模様付は塗装を浸漬塗
装法で行なうため、複雑な形状の処理材でも縦吊りで処
理することにより、容易に全面に模様付けができ、縦吊
りアルマイトライン内に組み込める他、表面調整処理と
後の電解発色、電解着色の方法により、ブロンズ色、ア
ンバー色、シルバー色、ゴールド色等多くの色調に模様
付けすることが可能であり、その着色は現在建築用外装
材に賞月されている耐候性、耐食性に優れた方法でアリ
、長期の使用においても何等支障は生じない。また、浴
槽の一方から一定方向に流動゛ｒる水面に塗料全力ａえ
、塗料が流動する水の力によって運ばれて水面上に所定
の木目模様が形成されるようにしたので、簡便に安定な
所望の模様形態を得ることができる。As described above, in the present invention, the patterning is done by dip coating, so even if the treated material has a complicated shape, by vertically hanging it, the entire surface can be easily patterned, and it can be applied inside the vertically hanging alumite line. In addition, by surface conditioning treatment and subsequent electrolytic coloring, it is possible to pattern in many colors such as bronze, amber, silver, and gold, and these colors are currently used for architectural purposes. The exterior material is highly acclaimed for its excellent weather and corrosion resistance, and there will be no problems even during long-term use. In addition, the paint is applied with all its strength to the water surface flowing in a certain direction from one side of the bathtub, and the paint is carried by the force of the flowing water to form a predetermined wood grain pattern on the water surface, making it easy and stable. A desired pattern form can be obtained.

さらに、水面に浮遊し７ている状態で塗料を処理材に付
Ｍ−Ａせるため、画一的な着色模様は得られず、近似は
しているが全く同一ではない着色模様が得られるのも本
発明の特徴の一つである。Furthermore, since the paint is applied to the treated material while it is floating on the water surface, a uniform colored pattern cannot be obtained, but rather a colored pattern that is similar but not exactly the same. This is also one of the features of the present invention.

本発明の方法では、着色模様を形成した後にさらにクリ
ヤー系塗料全スプレー塗装、浸漬塗装、電着塗装等のい
ずれかによって複合皮膜表面仕上げすることにより一層
耐食性、耐候性を向上させることができる。　゛ つぎに、実施例を示して本発明全さらに詳細に説明する
。In the method of the present invention, after forming the colored pattern, the surface of the composite film is finished by either full spray coating with clear paint, dipping coating, electrodeposition coating, etc., thereby further improving corrosion resistance and weather resistance. Next, the present invention will be explained in more detail by way of examples.

実施例　１ 常法により脱脂、エツチング、スマット除去した長さ２
０ｃｍ、幅７ｃｒｎのアルミニウム押出形材Ａ　−６０
６３Ｓ、ｉ乾燥させた。この形材ヲ、一定方向にゆるや
かに流動する水面に、シンナーで岩田・：（ＩＨ５）カ
ップで１１秒になるように希釈した変性アクリルラッカ
ー（アクリル樹脂／ニトロセルロース）エナメル（ブラ
ック）塗料’ａ”流動方向に細い線状になるように５ケ
所より流し込み、オーバーフローする寸前に水のθ重重
すと塗料の流し込みを止め、上６Ｉ′形材をゆっくり浸
漬し７、木目模様状に塗料を形材に付着する。ついでこ
れを引き上げ、水洗した後１００℃で１０分間乾燥した
。これをホウＤ　２　ＯＳ’／ｌ−、カセイソーダ１２
μ、液温２０℃の液に浸６１シ、対極のステンレス（Ｓ
ＵＳ３０４）との間に２　Ａ／ｄ４ｒ？の電流密度でＡ
Ｏ秒間通電してツクリヤ皮１１０會生成させた後、有機
剥離剤サブロクイトｐ−＋ｑ＜ｒｐ外化成株式会社製）
で模様状にマスキングし２ていた塗膜を剥離し、水洗し
た後、１７．５　Ｗ／Ｖ受硫受電酸電解液漬し陽極とし
、対極として設けたアルミニウム陰極との間に１．２　
Ａ／ｄｍ２の電流密度で３５分間直流通電し、陽極酸化
皮膜全生成嘔せた。ついで、水洗後、下記の電解液組成
で、対極のカーボンとの間に＋ＳＶで３分間”２Ｒ電解
すると、マスキングされていた部分７５−濃く、他の部
分は淡いブロンズ色の木目模様７５；見られた。Example 1 Length 2 degreased, etched, and smut removed by conventional methods
0cm, width 7crn aluminum extrusion profile A-60
63S, i dried. This shape is coated with a modified acrylic lacquer (acrylic resin/nitrocellulose) enamel (black) paint diluted with thinner to 11 seconds in an Iwata (IH5) cup on the surface of water that flows slowly in a certain direction. ``Pour the paint from 5 places in a thin line in the direction of flow, add θ weight of water just before it overflows, stop pouring the paint, and slowly soak the upper 6I' shape 7. Shape the paint into a wood grain pattern. It adheres to the material.Then it was pulled up, washed with water, and dried at 100°C for 10 minutes.
μ, immersed in a liquid with a liquid temperature of 20°C for 61 hours, and stainless steel (S) as the counter electrode.
2 A/d4r? A at a current density of
After applying electricity for 0 seconds to generate a 110-hour thick skin, apply an organic peeling agent Subroquit p-+q < RP manufactured by Gaito Kasei Co., Ltd.).
After peeling off the coating film that had been masked in a pattern with 2 and washing with water, it was immersed in a 17.5 W/V sulfur-receiving acid electrolyte to serve as an anode, and a 1.2-meter electrode was placed between it and the aluminum cathode provided as a counter electrode.
Direct current was applied for 35 minutes at a current density of A/dm2 to completely form the anodic oxide film. Then, after washing with water, electrolysis was performed for 3 minutes at +SV between the counter electrode carbon and the carbon counter electrode using the following electrolytic solution composition. It was done.

電解液組成：硫酸ニッケル（６水和物）　３０　グ／を
硫酸マグネシウム（７水和物’）　１５　ｆ／ｌホウ酸
　２０　９／を 硫酸アンモニウム　３ｏ　≠ 亜二チオン酸ナトリウム　０．５　ｔ／ｌＰＨ５，６ 液温　２０　℃ 実施例　２ 実施例１のホウ酸−カセイソーダによるバ〃・ヤ皮膜電
解に代えて、ｌ　５　ｆ／／を硫酸、液温２ｏ℃の電解
液で対極として設けたアルミニウム陰極との１Ｍに２３
Ｖの直流電圧をかけ、１分間電解した後、有機剥離剤サ
ブロクィトＰ−１９（中外化成株式会社製）で模様状に
マスキングした塗のを剥離し、水洗した後、１７．５Ｗ
／’ｖ％硫酸電解液に浸漬し７陽極とし、対極として設
けたアルミニウム陰極との間で２１Ｖで２０秒間通電し
てから、直流で１．２　Ａ／−の電流密度で３５分間陽
極酸化した。これ以後の処理は実施例１と同様にして行
なったところ、マスキングされていた部分が濃く、その
他の部分は淡いブロンズ色の木目模様かえられた。Electrolyte composition: Nickel sulfate (hexahydrate) 30 g/l Magnesium sulfate (7 hydrate') 15 f/l Boric acid 20 9/l ammonium sulfate 3 o ≠ Sodium dithionite 0.5 t/l PH5, 6 Liquid temperature 20°C Example 2 Instead of the barrier film electrolysis using boric acid and caustic soda in Example 1, an aluminum cathode provided as a counter electrode with l5f// in sulfuric acid and an electrolytic solution with a liquid temperature of 2o°C was used. 23 to 1M of
After applying a DC voltage of V and electrolyzing for 1 minute, the coating masked in a pattern was peeled off using an organic stripping agent Subroquito P-19 (manufactured by Chugai Kasei Co., Ltd.), and after washing with water, 17.5W
/'v% sulfuric acid electrolyte to form a 7 anode, and after applying current at 21 V for 20 seconds between the aluminum cathode provided as a counter electrode, anodization was performed for 35 minutes at a current density of 1.2 A/- with direct current. . The subsequent treatments were carried out in the same manner as in Example 1, and the masked areas were darkened, while the other areas were changed to a light bronze woodgrain pattern.

実施例　３ 実施例１と同様に木目模様状の塗装をしてマスキング膜
を形成した後、６０℃の７０２μカセイソーダで３分間
露出部全エツチングし１、凹凸音生じさせるとともに金
属光沢差を出した後、実施例１と同様の処理を行なった
ところ、実施例１で得られた仕上り外観、に刃口えて、
木目板トランに立体観が刀０わった。Example 3 A masking film was formed by painting with a wood grain pattern in the same manner as in Example 1, and then the entire exposed area was etched with 702μ caustic soda at 60°C for 3 minutes (1) to create an uneven sound and to create a difference in metallic luster. After that, the same treatment as in Example 1 was carried out, and the finished appearance obtained in Example 1 was different from the cutting edge.
The three-dimensional appearance of the wood-grained board is striking.

実施例　４ マスキング膜を剥離するまでは実施例１と同様に行ない
、それ以後はＩ　ＯＯｔ／ｌスルホサリチル酸、５　？
／を硫酸の電解液を液温２０℃にし。Example 4 The same procedure as in Example 1 was carried out until the masking film was peeled off, and after that, IOOt/l sulfosalicylic acid, 5?
/ Bring the sulfuric acid electrolyte to a temperature of 20°C.

て、対極のアルミニウム陰極とのＪｕｌに電流密度２　
Ａ／ｄｄ　で３５分間陽極酸化処理をし、たところ、マ
スキングされていた部分が濃く、その他の部分は淡いア
ンバー色となり、木目模様かえられた。The current density is 2 at Jul with the counter aluminum cathode.
After anodizing with A/dd for 35 minutes, the masked areas became darker and the other areas became a light amber color, changing the wood grain pattern.

実施例　５ マスキング膜を剥離するまでは実施例３と同様に行ない
、それ以後は実施例４と同様の処理を行なったところ、
実施例４でえられた仕上り外観に加えて、木目模様に立
体、観が加わった。Example 5 The same procedure as in Example 3 was carried out until the masking film was peeled off, and after that, the same treatment as in Example 4 was carried out.
In addition to the finished appearance obtained in Example 4, three-dimensionality and appearance were added to the wood grain pattern.

実施例　６ 実施例２において、１５ダ／を硫酸、液温２０℃の電解
液による電解処理に代えて、２０　ｆ／ｌシュウ酸、液
温２０℃の電解液を用いる他は同様の条件で処Ｗｋ行な
ったところ、マスキングされていた部分が濃く、その他
の部分は淡いブロンズ色の木目模様かえられた。Example 6 In Example 2, the same conditions were used except that instead of the electrolytic treatment using 15 da/l sulfuric acid and an electrolytic solution with a liquid temperature of 20°C, 20 f/l oxalic acid and an electrolytic solution with a liquid temperature of 20°C were used. When I performed the cleaning process, the masked areas were darker, and the other areas had a light bronze wood grain pattern.

出願人　吉田工業株式会社 代理人　弁理士　米　原　正　意 弁理士　浜　本　忠Applicant: Yoshida Kogyo Co., Ltd. Agent: Patent Attorney Tadashi Yonehara Patent Attorney Hamamoto Tadashi

Claims (1)

【特許請求の範囲】 １、浴槽の一方から一定方向に流動する水面に塗料を加
えることによって該塗料を多線状もしくは波紋状に浮遊
させ、アルミニウムー！たはその合金を該塗料浴槽に浸
漬し、木目状の模様を付着しマスキングした後、前記ア
ルミニウムまたはその合金を浴槽から引き上げてその表
面に引き上げの際にゆるく再付着した塗料を水洗し、引
き続き前記マスキング芒れていない部分に化学皮膜、陽
極酸化皮膜、バリヤ型皮膜もしくは着色酸化皮膜などの
皮膜を形成し、ついでマスキングした塗膜を剥離し、そ
の後電解法により着色させて模様着色皮膜を形成するこ
と全特徴とするアルミニウムまたはその合金の着色模様
の形成方法。 ２、電解法による着色を、まず陽極酸化処理を行ない、
ついで金属塩を含有する電解液中で電解着色法により着
色を行なう特許請求の範囲第１項記載の着色模様の形成
方法。 ３、電解法による着色を、有機酸を電解液として用いて
着色酸化皮膜を生成する電解発色法により行う特許請求
の範囲第１項記載の着色模様の形成方法。 ４、浴槽の一方から一定方向に流動する水面に塗料を加
えることによって該塗料全多線状もしくは波紋状に浮遊
させ、アルミニウムまたはその合金を該塗料浴槽に浸漬
し、木目状の模様を付着しマスキングした後、前記アル
ミニウムまたはその合金を浴槽から引き上けて七の表面
に引上げの際にゆるく再付着した塗料全水洗し、引キ続
きエツチング処理し、ついでマスキングした塗膜を剥離
し、七の後電解法により着色させて模様着色皮膜を形成
することを特徴とするアルミニウムまたはその合金の着
色模様の形成方法。 ５、電解法による着色を、まずｌｓ極酸酸化処理行ない
、ついで金属塩を含有する電解液中で電解着色法により
着色を行なう特許請求の範囲第４項記載の着色模様の形
成方法。 ６、電解法による着色金、有機酸を電解液として用いて
着色酸化皮膜全生成する電解発色法により行なう特許請
求の範囲第４項記載の着色模様の形成方法。[Claims] 1. By adding paint to the water surface flowing in a fixed direction from one side of the bathtub, the paint is suspended in a multi-line or ripple pattern, and aluminum! After immersing the aluminum or its alloy in the paint bath and attaching and masking a wood grain pattern, the aluminum or its alloy is removed from the bath and the paint that has loosely reattached to the surface when pulled up is washed with water, and then the paint is washed with water. A film such as a chemical film, anodic oxide film, barrier type film, or colored oxide film is formed on the areas that are not masked, and then the masked film is peeled off and then colored by an electrolytic method to form a patterned colored film. A method for forming colored patterns on aluminum or its alloys. 2. For coloring by electrolytic method, first perform anodizing treatment,
The method for forming a colored pattern according to claim 1, wherein coloring is then carried out by an electrolytic coloring method in an electrolytic solution containing a metal salt. 3. The method for forming a colored pattern according to claim 1, wherein the electrolytic coloring is performed by an electrolytic coloring method in which a colored oxide film is produced using an organic acid as an electrolytic solution. 4. Add paint to the water surface flowing in a certain direction from one side of the bathtub to make the paint float in a multi-line or ripple pattern, and then immerse aluminum or its alloy in the paint bath to attach a wood grain pattern. After masking, the aluminum or aluminum alloy was lifted from the bathtub and the paint that had loosely reattached to the surface of the plate was washed with water, followed by etching treatment, and then the masked coating was peeled off. 1. A method for forming a colored pattern on aluminum or its alloy, the method comprising forming a patterned colored film by coloring by a post-electrolytic method. 5. The method for forming a colored pattern according to claim 4, wherein the electrolytic coloring is first carried out by ls polar acid oxidation treatment, and then the electrolytic coloring is carried out in an electrolytic solution containing a metal salt. 6. Coloring by electrolytic method The method for forming a colored pattern according to claim 4, which is carried out by an electrolytic coloring method in which a colored oxide film is entirely formed using gold and an organic acid as an electrolytic solution.