JP2000279879A - Stainless steel plate coated with transparent fluoroplastic coating with high adhesion strength and corrosion resistance and manufacture thereof - Google Patents
Stainless steel plate coated with transparent fluoroplastic coating with high adhesion strength and corrosion resistance and manufacture thereofInfo
- Publication number
- JP2000279879A JP2000279879A JP8635299A JP8635299A JP2000279879A JP 2000279879 A JP2000279879 A JP 2000279879A JP 8635299 A JP8635299 A JP 8635299A JP 8635299 A JP8635299 A JP 8635299A JP 2000279879 A JP2000279879 A JP 2000279879A
- Authority
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- Japan
- Prior art keywords
- stainless steel
- corrosion resistance
- steel sheet
- coating film
- coating
- 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.)
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- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、密着性と耐食性に優れ
た透明フッ素樹脂被覆ステンレス鋼板およびその製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent fluororesin-coated stainless steel sheet having excellent adhesion and corrosion resistance and a method for producing the same.
【０００２】[0002]
【従来の技術】ステンレス鋼板は素手で取り扱うと指紋
が付着し易く、湿気の多い厨房や屋外で使用する場合に
は塩素イオンにより錆が生じやすい。これらを防止する
ため、ステンレス鋼板の表面にクロメート皮膜を形成し
た後、透明フッ化ビニリデン樹脂塗料の塗装が施されて
いる。しかし、フッ化ビニリデン樹脂塗膜は柔らかいた
め、傷が付きやすく耐食性を損ねるものであった。2. Description of the Related Art Fingerprints tend to adhere to a stainless steel plate when handled with bare hands, and rust is easily generated by chlorine ions when used in a humid kitchen or outdoors. To prevent these, after a chromate film is formed on the surface of a stainless steel sheet, a transparent vinylidene fluoride resin paint is applied. However, since the vinylidene fluoride resin coating film is soft, it is easily scratched and impairs corrosion resistance.
【０００３】かかる対策として、ポリ四フッ化エチレン
粉末を加えた透明フッ化ビニリデン樹脂塗膜を形成させ
ることで、著しく耐摩耗性および耐傷付き性を向上させ
たものが報告されている（特願平6-62054号）。また、
無機骨材と有機骨材を含むポリフッ化ビニリデン樹脂と
アクリル樹脂からなる樹脂塗膜を形成させること（特開
平9-221621号）で、良好な加工性を有したまま耐摩耗性
および耐傷付き性を向上させたものが報告されている。[0003] As a countermeasure, there has been reported a method of forming a transparent vinylidene fluoride resin coating film to which polytetrafluoroethylene powder is added to thereby remarkably improve abrasion resistance and scratch resistance (Japanese Patent Application No. 2002-214,197). Hei 6-62054). Also,
By forming a resin coating consisting of polyvinylidene fluoride resin containing inorganic and organic aggregates and acrylic resin (Japanese Patent Laid-Open No. 9-221621), abrasion resistance and scratch resistance with good workability Have been reported.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、近年、
大腸菌O-157による食中毒問題により、業務用冷蔵庫の
清掃が入念に行われるようになった。それに伴い、塗膜
のより優れた密着性と耐食性を有し、しかも優れた耐摩
耗性を有するクリアー塗装ステンレスが望まれるように
なった。このようなクリアー塗装ステンレスとして、PT
FE等を含有するポリフッ化ビニリデン樹脂とアクリル樹脂か
らなる樹脂塗膜が考案されているが、フッ素を含む樹脂
を密着性良くステンレスの塗装することはむずかしく、
密着性にバラツキが生じていた。また、密着性は良好で
も、複合サイクル試験やCASS試験での耐食性が不十分で
あった。本発明は、より優れた密着性と耐食性を有する
透明フッ素樹脂被覆ステンレス鋼板を提供することを目
的とする。However, in recent years,
Due to the food poisoning problem caused by Escherichia coli O-157, commercial refrigerators have been carefully cleaned. Accordingly, a clear coated stainless steel having more excellent adhesion and corrosion resistance of the coating film and also having excellent wear resistance has been desired. As such clear painted stainless steel, PT
A resin coating consisting of polyvinylidene fluoride resin containing FE etc. and acrylic resin has been devised, but it is difficult to apply fluorine-containing resin with good adhesion to stainless steel,
Variations occurred in the adhesion. Although the adhesion was good, the corrosion resistance in the combined cycle test and CASS test was insufficient. An object of the present invention is to provide a transparent fluororesin-coated stainless steel sheet having better adhesion and corrosion resistance.
【０００５】[0005]
【課題を解決するための手段】本発明は、ステンレス鋼
板の表面に形成される酸化皮膜をFe/Crがatomic比で40/
60〜60/40の範囲である酸化物組成にコントロールし、
その上に全Cr量が5〜40mg/m2のクロメート皮膜を形成し
た上で、ポリ四フッ化エチレン樹脂粉末とワックスを含
有するポリフッ化ビニリデン樹脂とアクリル樹脂とから
なる透明フッ素樹脂塗膜を形成した。According to the present invention, an oxide film formed on the surface of a stainless steel sheet has an atomic ratio of Fe / Cr of 40 / atomic ratio.
Control the oxide composition in the range of 60-60 / 40,
In terms of the total Cr content on it to form a chromate film of 5 to 40 mg / m 2, made of a polyvinylidene fluoride resin and an acrylic resin containing polytetrafluoroethylene resin powder and wax transparent fluororesin coating films Formed.
【０００６】[0006]
【作用】ステンレス鋼板は、ステンレスの中でも安価な
フェライト系とする。表面仕上げは鏡面でもHL仕上げで
も何れでも良い。通常ステンレス鋼板は圧延や焼鈍工程
を経て、仕上げによっては研磨工程を通って製品とされ
る。[Function] A stainless steel plate is made of ferrite which is inexpensive among stainless steels. The surface finish may be either mirror surface or HL finish. Normally, a stainless steel sheet is processed into a product through a rolling or annealing process, and depending on a finish, through a polishing process.
【０００７】このようにして得られたフェライト系ステ
ンレス鋼板の表面をESCAにより分析すると、酸化皮膜の
Fe/Cr比はatomic比で約80/20である。この酸化皮膜を有
したままクロメート処理を施した後、フッ素樹脂塗膜を
形成させると、その酸化皮膜の厚さによっては密着不良
を起こす場合もあった。クリアー塗膜とする必要のない
場合には、密着性向上のためにプライマー塗装を行うこ
とができるが、透明フッ素樹脂被覆ではプライマーを塗
装することはできない。When the surface of the ferritic stainless steel sheet thus obtained is analyzed by ESCA, the oxide film
The Fe / Cr ratio is about 80/20 in atomic ratio. If a fluororesin coating film is formed after performing the chromate treatment while having this oxide film, poor adhesion may occur depending on the thickness of the oxide film. When it is not necessary to form a clear coating film, a primer coating can be performed to improve adhesion, but a primer cannot be coated with a transparent fluororesin coating.
【０００８】この酸化皮膜を有するステンレス鋼板を酸
性浴で処理すると、酸化皮膜は容易に除去され、表面に
は新たにFe/Cr比がatomic比で約50/50の酸化皮膜が形成
される。この酸化皮膜の上にクロメート処理を施し、フ
ッ素樹脂塗膜を形成させると、優れた密着性を示す。こ
れは、酸化皮膜中の酸化クロムがクロメート皮膜中の酸
化クロムとの結合を強固にしているためで、Cr組成の高
いほど密着性は優れる。また、そのFe/Cr比が約50/50の
酸化皮膜は、フッ素樹脂塗膜を形成させる際に、触媒的
に働きフッ素樹脂塗膜中のアクリル樹脂との結合が強固
になる。ステンレス表面の酸化皮膜中のFe/Cr比はatomi
c比で40/60〜60/40とするのが望ましい。Crに対してFe
が40％未満にすることは難しく、60％を越えると密着性
に悪影響を及ぼす。When the stainless steel sheet having the oxide film is treated in an acidic bath, the oxide film is easily removed, and a new oxide film having a Fe / Cr ratio of about 50/50 in atomic ratio is newly formed on the surface. When a chromate treatment is performed on this oxide film to form a fluororesin coating film, excellent adhesion is exhibited. This is because the chromium oxide in the oxide film strengthens the bond with the chromium oxide in the chromate film, and the higher the Cr composition, the better the adhesion. Further, the oxide film having an Fe / Cr ratio of about 50/50 acts as a catalyst when forming the fluororesin coating, and the bond with the acrylic resin in the fluororesin coating is strengthened. Fe / Cr ratio in oxide film on stainless steel surface is atomi
It is desirable that the ratio c is 40/60 to 60/40. Fe for Cr
Is less than 40%, and if it exceeds 60%, the adhesion is adversely affected.
【０００９】このようなFe/Cr比の酸化皮膜を有するス
テンレス鋼板の表面に形成するクロメート皮膜は、本発
明の場合、フッ化ビニリデン樹脂塗膜が透明であるの
で、クロメート皮膜が着色していると、それが外観に現
れる。そこで、本発明では、クロメート皮膜の全Cr量を
40mg/m2以下にして、外観を損ねないようにした。しか
し、全Cr量を少なくすると、塗膜密着性、耐食性が低下
してしまうので、全Cr量を5mg/m2以上にした。In the case of the present invention, the chromate film formed on the surface of a stainless steel sheet having such an oxide film having an Fe / Cr ratio is colored because the vinylidene fluoride resin film is transparent. And it appears in the appearance. Therefore, in the present invention, the total Cr content of the chromate film is
The content was set to 40 mg / m 2 or less so as not to impair the appearance. However, if the total Cr content is reduced, the coating film adhesion and the corrosion resistance decrease, so the total Cr content was set to 5 mg / m 2 or more.
【００１０】透明フッ素樹脂塗膜は、ポリフッ化ビニリ
デン樹脂とアクリル樹脂との混合組成にすると、密着性
が良好で透明性に優れた塗膜が得られる。アクリル樹脂
の混合量は20〜50重量％とすることが望ましい。50％を
越えると樹脂中に分散させるポリ四フッ化エチレン（以
下PTFEという）粒子の均一分散が難しくなり、20％未満
では塗膜の密着性が不十分となる。When the transparent fluororesin coating film has a mixed composition of a polyvinylidene fluoride resin and an acrylic resin, a coating film having good adhesion and excellent transparency can be obtained. The mixing amount of the acrylic resin is desirably 20 to 50% by weight. If it exceeds 50%, it is difficult to uniformly disperse the polytetrafluoroethylene (hereinafter referred to as PTFE) particles dispersed in the resin, and if it is less than 20%, the adhesion of the coating film becomes insufficient.
【００１１】PTFE粉末を塗膜中に分散させると、潤滑剤
として作用して塗膜の耐摩耗性を向上させる。また、艶
消しの役目を果たすため、塗膜の光沢を抑えて高級感の
ある表面状態を得ることができる。PTFE粉末の粒径は3
〜40μmとし、添加量は1〜20重量％にする。粒径が3μm
より小さいと潤滑作用が小さくなり耐摩耗性が劣るとと
もに、添加量を増大させても塗膜表面の光沢度が高くな
り艶消し感がなく、意匠性が劣る。また、40μmを越え
ると塗膜の凹凸が大きくなり、表面外観が劣る。添加量
は1重量％未満であると、耐摩耗性および意匠性が劣
り、20重量％を越えると、塗膜密着性を低下させる。When PTFE powder is dispersed in a coating film, it acts as a lubricant to improve the abrasion resistance of the coating film. Further, since it plays a role of matting, it is possible to obtain a high-grade surface state by suppressing the gloss of the coating film. Particle size of PTFE powder is 3
4040 μm, and the added amount is 1-20% by weight. Particle size 3μm
If it is smaller, the lubricating effect is reduced and the abrasion resistance is poor, and even if the amount of addition is increased, the glossiness of the coating film surface is increased, and there is no matte feeling, and the design is poor. On the other hand, if it exceeds 40 μm, the unevenness of the coating film becomes large and the surface appearance is inferior. If the amount is less than 1% by weight, the abrasion resistance and the design are inferior, and if it exceeds 20% by weight, the coating film adhesion is reduced.
【００１２】ワックスを塗膜中に添加すると、塗膜自体
の硬さが向上し、潤滑性も増す。ワックスは、パラフィ
ンワックスやマイクロクリスタルワックス等の石油ワッ
クスが良い。塗膜中の含有量は、2.0重量％以下とす
る。2.0重量％を越えると、塗膜の密着性は不良とな
る。When a wax is added to a coating film, the hardness of the coating film itself is improved and lubricity is also increased. The wax is preferably petroleum wax such as paraffin wax or microcrystal wax. The content in the coating film is 2.0% by weight or less. If it exceeds 2.0% by weight, the adhesion of the coating film will be poor.
【００１３】本発明の透明フッ素樹脂被覆ステンレス鋼
板の製造は、研磨仕上げしたステンレス鋼板を酸洗、リ
ン酸塩処理を順次施した後、クロメート処理を施し、そ
の後PTFE粉末、ワックス、ポリフッ化ビニリデン樹脂、
およびアクリル樹脂を有機溶媒に分散させた塗料を用い
て塗装して230〜280℃で焼き付け、急冷することによっ
て行う。酸洗に使用する溶液は、塩酸、硫酸、硝酸、酢
酸、リン酸、フッ酸いずれでも良く、pHが４以下のもの
とする。ここで、酸洗は溶液中にステンレス基板を浸漬する
だけでも良いが、電解を加えることも有効である。クロ
メート処理前にリン酸塩処理を施すのは、確実にステン
レス表面のFe/Cr比がatomic比で40/60〜60/40の範囲に
なるよう、エッチングさせるためと、クロメート処理液
に対する濡れ性を向上させるためである。このリン酸塩
処理は塗装前処理に使用されているリン酸亜鉛処理液で
十分である。In the production of the transparent fluororesin-coated stainless steel sheet of the present invention, the polished stainless steel sheet is sequentially subjected to pickling, phosphate treatment, then chromate treatment, and then PTFE powder, wax, polyvinylidene fluoride resin. ,
The coating is performed using a coating material in which an acrylic resin is dispersed in an organic solvent, baking at 230 to 280 ° C., and quenching. The solution used for pickling may be any of hydrochloric acid, sulfuric acid, nitric acid, acetic acid, phosphoric acid and hydrofluoric acid, and has a pH of 4 or less. Here, the pickling may be simply by immersing the stainless steel substrate in the solution, but it is also effective to add electrolysis. The phosphate treatment before the chromate treatment is performed to ensure that the stainless steel surface has an Fe / Cr ratio of 40/60 to 60/40 in atomic ratio, and that the stainless steel has a wettability to the chromate treatment solution. It is for improving. For this phosphating treatment, the zinc phosphate treatment liquid used for the pre-coating treatment is sufficient.
【００１４】クロメート処理は、全Cr量の割に着色の少
ないリン酸-クロム酸系処理液、特に特開平5-106057号
のようにシリカを配合したものを使用するのが好まし
い。この処理液はステンレス鋼板にロールコーター、カ
ーテンフローコーターあるいは浸漬引き上げ等により塗
布してロール等で絞り、その後水洗することなく80〜20
0℃で乾燥するのが好ましい。In the chromate treatment, it is preferable to use a phosphoric acid-chromic acid-based treatment liquid which is less colored compared to the total amount of Cr, particularly one containing silica as disclosed in JP-A-5-06057. This treatment liquid is applied to a stainless steel plate by a roll coater, curtain flow coater or dipping and pulling up and squeezed by a roll or the like, and then 80 to 20 without washing with water.
Drying at 0 ° C. is preferred.
【００１５】PTFE粉末、ワックス、ポリフッ化ビニリデ
ン樹脂およびアクリル樹脂を有機溶媒に分散させた塗料
の塗装は、ロールコート法、カーテンフローコート法の
ような公知方法によればよいが、焼き付けはフッ化ビニ
リデン樹脂やアクリル樹脂の融点より高く、PTFE樹脂の
融点より低くして、焼き付け後もPTFE粉末が塗膜中に残
存するようにする必要があるので、230〜280℃で行う。The coating of a coating material in which PTFE powder, wax, polyvinylidene fluoride resin and acrylic resin are dispersed in an organic solvent may be performed by a known method such as a roll coating method or a curtain flow coating method. Since the PTFE powder needs to be higher than the melting point of vinylidene resin or acrylic resin and lower than the melting point of PTFE resin so that the PTFE powder remains in the coating film even after baking, it is performed at 230 to 280 ° C.
【００１６】塗装後には急冷して塗膜の結晶化を防ぐこ
とが必要である。急冷しない場合にはポリフッ化ビニリ
デン樹脂とアクリル樹脂の混合組成での結晶化が進み、
塗膜の透明性が損なわれる。After coating, it is necessary to cool rapidly to prevent crystallization of the coating film. If not quenched, crystallization proceeds with a mixture of polyvinylidene fluoride resin and acrylic resin,
The transparency of the coating film is impaired.
【００１７】[0017]
【実施例】［実施例１］SUS430ステンレス鋼板（板厚0.
5mm、＃150番手による＃４仕上げ）を2％塩酸溶液で酸
洗して水洗した後、リン酸亜鉛処理剤で処理して、水洗
および乾燥した。その後、リン酸-クロム酸系クロメー
ト処理液をロールコーターで塗布して、100℃で乾燥
し、全Cr量20mg/m2のクロメート皮膜を形成した。次
に、このクロメート皮膜の上にPTFE粉末、ワックス、ポ
リフッ化ビニリデン樹脂および熱可塑性アクリル樹脂を
有機溶剤に分散させた塗料を塗装し、250℃で焼き付け
た後、水冷した。[Example 1] SUS430 stainless steel plate (thickness:
(5 mm, # 4 finish by # 150 count) was pickled with a 2% hydrochloric acid solution, washed with water, treated with a zinc phosphate treating agent, washed with water and dried. Thereafter, a phosphoric acid-chromic acid-based chromate treatment solution was applied by a roll coater and dried at 100 ° C. to form a chromate film having a total Cr content of 20 mg / m 2 . Next, a coating material in which PTFE powder, wax, polyvinylidene fluoride resin and thermoplastic acrylic resin were dispersed in an organic solvent was applied on the chromate film, baked at 250 ° C., and cooled with water.
【００１８】［比較例］実施例１において、塩酸による
酸洗をアルカリ脱脂に変えた以外は同様にして、PTFE粉
末を分散させた透明フッ素樹脂塗膜を形成した。Comparative Example A transparent fluororesin coating film in which PTFE powder was dispersed was formed in the same manner as in Example 1 except that the acid pickling with hydrochloric acid was changed to alkaline degreasing.
【００１９】以上のようにして製造した塗装鋼板に対し
て、塗膜密着性評価及び耐食性評価を実施した。この結
果を表２に示す。The coated steel sheet manufactured as described above was evaluated for coating film adhesion and corrosion resistance. Table 2 shows the results.
【００２０】[0020]
【表１】 [Table 1]
【００２１】なお、塗膜密着性評価及び耐食性評価の試
験および評価方法は次のとおりである。 （1）塗膜密着性 塗装鋼板を沸騰水に２時間浸漬して冷却した後、ゴバン
目エリクセンで6mm押し出し、ゴバン目部をセロテープ（登録
商標）剥離し、塗膜剥離の発生しないものを○、１カ所
でも剥離が生じた場合にはＸで評価した。 （2）耐食性試験 クロスカットを入れたサンプルを、複合サイクル試験で
耐食性を評価した。複合サイクルの条件は、塩水噴霧２
時間-乾燥１時間-湿潤２時間-乾燥１時間とし、1000時
間試験後において、クロスカット部に膨れや赤錆等の腐
食が認められるものを×、腐食がないものを○で示し
た。 （3）耐摩耗性試験 「ＪＩＳＫ５４００８．９耐摩耗性」試験に準拠し、テ
ーバー摩耗試験機を用いて耐摩耗性を調査した。摩耗条
件としては、ＣＳ１０を摩耗輪とし、荷重１ｋｇ、回転
数２０００を採用した。摩耗試験後の塗膜を観察し、塗
膜に剥離が観察されなかったものを記号○で、剥離が発
生したものを×で評価した。Tests and evaluation methods for evaluation of coating film adhesion and corrosion resistance are as follows. (1) Coating adhesion The coated steel sheet was immersed in boiling water for 2 hours and cooled, then extruded with Goban-Eriksen 6 mm, and the Gobang eye was peeled off with Cellotape (registered trademark). In the case where peeling occurred even at one place, it was evaluated with X. (2) Corrosion resistance test The cross-cut sample was evaluated for corrosion resistance by a combined cycle test. The conditions of the combined cycle were salt spray 2
Time-drying 1 hour-wetting 2 hours-drying 1 hour. After the test for 1000 hours, cross-cut portions showing corrosion such as swelling or red rust were indicated by x, and those without corrosion were indicated by o. (3) Abrasion resistance test Abrasion resistance was investigated using a Taber abrasion tester in accordance with the “JIS K54008.9 abrasion resistance” test. As wear conditions, CS10 was used as a worn wheel, a load of 1 kg, and a rotation speed of 2000 were adopted. The coating film after the abrasion test was observed, and those in which no peeling was observed in the coating film were evaluated with the symbol ○, and those in which the peeling occurred were evaluated with x.
【００２２】[0022]
【発明の効果】以上のように、本発明の透明フッ素樹脂
被覆ステンレス鋼板は、優れた耐摩耗性を有し、密着性
にバラツキがなく、耐食性も良好である。本発明の鋼板
を業務用冷蔵庫等のパネルに使用することによって、清
掃が入念に行われても塗膜に破れが発生せず、長期間発
錆が認められず、清潔感を維持することができる。As described above, the transparent fluororesin-coated stainless steel sheet of the present invention has excellent abrasion resistance, has no variation in adhesion, and has good corrosion resistance. By using the steel sheet of the present invention for panels of commercial refrigerators and the like, even if the cleaning is performed carefully, the coating film does not break, no rust is observed for a long time, and the clean feeling can be maintained. it can.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ３２Ｂ 27/30 Ｂ３２Ｂ 27/30 Ｄ (72)発明者 福本 博光 千葉県市川市高谷新町７番地の１ 日新製 鋼株式会社技術研究所内 Ｆターム(参考） 4D075 BB26Z BB65X BB74X BB75X BB93Z CA13 CA33 DA06 DB04 DC01 DC10 DC38 EB16 EB17 EB22 EB56 EB57 4F100 AA22A AA22B AA23A AB04A AJ11C AK18C AK19C AK25C AL05C CB01C DE01C EA031 EH462 EJ482 EJ502 EJ681 EJ69B EJ691 EJ851 GB48 JB02 JL11 JM02A JN01C──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B32B 27/30 B32B 27/30 D (72) Inventor Hiromitsu Fukumoto 7th Takatani Shinmachi, Ichikawa-shi, Chiba F-term (Reference) 4D075 BB26Z BB65X BB74X BB75X BB93Z CA13 CA33 DA06 DB04 DC01 DC10 DC38 EB16 EB17 EB22 EB56 EB57 4F100 AA22A AA22B AA23A AB04A AJ11C AK18C01E AK18C01E AK18C01E EJ851 GB48 JB02 JL11 JM02A JN01C
Claims (6)
である酸化皮膜で覆われたステンレス鋼板の表面に全Cr
量が5〜40mg/m2のクロメート皮膜を形成し、その上にポ
リ四フッ化エチレン樹脂粉末とワックスとを含有するポ
リフッ化ビニリデン樹脂とアクリル樹脂とからなる透明
フッ素樹脂塗膜を形成したことを特徴とする、密着性お
よび耐食性に優れた透明フッ素樹脂被覆ステンレス鋼
板。1. The surface of a stainless steel sheet covered with an oxide film whose Fe / Cr atomic ratio is in the range of 40/60 to 60/40,
A chromate film having an amount of 5 to 40 mg / m 2 was formed, and a transparent fluororesin coating film composed of polyvinylidene fluoride resin containing polytetrafluoroethylene resin powder and wax and an acrylic resin was formed thereon. A transparent fluororesin-coated stainless steel sheet with excellent adhesion and corrosion resistance.
イト系であることを特徴とする、密着性および耐食性に
優れた透明フッ素樹脂被覆ステンレス鋼板。2. A stainless steel sheet coated with a transparent fluororesin having excellent adhesion and corrosion resistance, wherein the stainless steel sheet according to claim 1 is ferritic.
脂成分として、アクリル樹脂が20〜50重量％であること
を特徴とする密着性および耐食性に優れた透明フッ素樹
脂被覆ステンレス鋼板。3. A transparent fluororesin-coated stainless steel sheet excellent in adhesion and corrosion resistance, wherein the resin component of the transparent fluororesin coating film according to claim 1 is 20 to 50% by weight of an acrylic resin.
脂粉末が、粒径3〜40μmであり、塗膜中に1〜20重量％
含有されていることを特徴とする、密着性および耐食性
に優れた透明フッ素樹脂被覆ステンレス鋼板。4. The polytetrafluoroethylene resin powder according to claim 1, having a particle size of 3 to 40 μm, and 1 to 20% by weight in the coating film.
A transparent fluororesin-coated stainless steel sheet excellent in adhesion and corrosion resistance, characterized by being contained.
であり、2.0重量％以下含有されていることを特徴とす
る密着性および耐食性に優れた透明フッ素樹脂被覆ステ
ンレス鋼板。5. A transparent fluororesin-coated stainless steel sheet excellent in adhesion and corrosion resistance, characterized in that the wax according to claim 1 is petroleum wax and is contained in an amount of 2.0% by weight or less.
処理とクロメート処理を行い、ポリ四フッ化エチレン樹
脂粉末とワックスを含有する、ポリフッ化ビニリデン樹
脂およびアクリル樹脂を溶剤に分散させた塗料を用いて
塗装後、230〜280℃で焼き付け冷却することを特徴とす
る、密着性および耐食性に優れた透明フッ素樹脂被覆ス
テンレス鋼板の製造方法。6. A coating in which a stainless steel plate is pickled, subjected to a phosphate treatment and a chromate treatment, and a polyvinylidene fluoride resin and an acrylic resin containing a polytetrafluoroethylene resin powder and a wax are dispersed in a solvent. A method for producing a transparent fluororesin-coated stainless steel sheet having excellent adhesion and corrosion resistance, comprising baking and cooling at 230 to 280 ° C. after painting using the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8635299A JP2000279879A (en) | 1999-03-29 | 1999-03-29 | Stainless steel plate coated with transparent fluoroplastic coating with high adhesion strength and corrosion resistance and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8635299A JP2000279879A (en) | 1999-03-29 | 1999-03-29 | Stainless steel plate coated with transparent fluoroplastic coating with high adhesion strength and corrosion resistance and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000279879A true JP2000279879A (en) | 2000-10-10 |
Family
ID=13884500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8635299A Pending JP2000279879A (en) | 1999-03-29 | 1999-03-29 | Stainless steel plate coated with transparent fluoroplastic coating with high adhesion strength and corrosion resistance and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000279879A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014054815A (en) * | 2012-09-14 | 2014-03-27 | Ricoh Co Ltd | Nozzle plate, method for manufacturing nozzle plate, liquid discharge head and image formation device |
| WO2020129781A1 (en) * | 2018-12-21 | 2020-06-25 | 日本ペイント・インダストリアルコーティングス株式会社 | Coating composition for precoated metal plates, precoated metal plate and method for producing same |
-
1999
- 1999-03-29 JP JP8635299A patent/JP2000279879A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014054815A (en) * | 2012-09-14 | 2014-03-27 | Ricoh Co Ltd | Nozzle plate, method for manufacturing nozzle plate, liquid discharge head and image formation device |
| WO2020129781A1 (en) * | 2018-12-21 | 2020-06-25 | 日本ペイント・インダストリアルコーティングス株式会社 | Coating composition for precoated metal plates, precoated metal plate and method for producing same |
| JP2020100740A (en) * | 2018-12-21 | 2020-07-02 | 日本ペイント・インダストリアルコ−ティングス株式会社 | Pre-coated metal plate coating composition, pre-coated metal plate and method for producing the same |
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