JP2008025019A - Zinc based plated steel sheet for back cover of display device using thin display panel - Google Patents
Zinc based plated steel sheet for back cover of display device using thin display panel Download PDFInfo
- Publication number
- JP2008025019A JP2008025019A JP2006272049A JP2006272049A JP2008025019A JP 2008025019 A JP2008025019 A JP 2008025019A JP 2006272049 A JP2006272049 A JP 2006272049A JP 2006272049 A JP2006272049 A JP 2006272049A JP 2008025019 A JP2008025019 A JP 2008025019A
- Authority
- JP
- Japan
- Prior art keywords
- film
- steel sheet
- back cover
- organic
- zinc
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
本発明は、薄型ディスプレイパネルを用いる表示装置のバックカバー用亜鉛系めっき鋼板に関するものである。 The present invention relates to a zinc-based plated steel sheet for a back cover of a display device using a thin display panel.
これまで、薄型ディスプレイパネル、特にプラズマディスプレイパネル(Plasma Display Panel、以下、PDPと略記する。)を用いる表示装置のバックカバー用材料として、下記のような提案がなされている。 To date, the following proposals have been made as back cover materials for display devices using thin display panels, particularly plasma display panels (hereinafter abbreviated as PDPs).
PDPを用いてテレビ映像等を表示する表示装置に係わり、電磁波の不要輻射を防止した表示装置の筐体構造に関するもので、PDPを収納する直方体の枠体を設け、その外部を外カバー(バックパネル)で被って筐体とし、枠体として導電性材料、バックカバーとしてプラスチック材料を用いるものが開示されている(例えば、特許文献1参照)。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device that uses a PDP to display television images and the like, and relates to a display device housing structure that prevents unwanted radiation of electromagnetic waves. (Patent Document 1), for example, is disclosed in which a casing is covered with a panel, a conductive material is used as a frame, and a plastic material is used as a back cover.
また上記と同様に、PDPの電磁波の不要輻射ノイズ漏れを防止する表示装置に関するもので、PDPを用いる表示装置はPDPが粘着シートを介してシャーシに固定され、PDP側の前面からキャビネット、シャーシ側の後面からバックカバーで挟まれたサンドイッチ構造になっている。表示装置のバックカバーとしては導電性材料からなるものや、樹脂製パネルの内側に金属製またはアルミニウム製の箔を貼り付けて導電性を持たせたものが開示されている(例えば、特許文献2参照)。 Similarly to the above, the present invention relates to a display device that prevents unnecessary radiation noise leakage of PDP electromagnetic waves. In the display device using PDP, the PDP is fixed to the chassis via an adhesive sheet, and the cabinet, chassis side from the front surface on the PDP side. It has a sandwich structure sandwiched between the back and back cover. As a back cover of a display device, a back cover made of a conductive material or a cover made by attaching a metal or aluminum foil inside a resin panel is disclosed (for example, Patent Document 2). reference).
他方、放熱性、導電性および耐疵付性が優れた金属板に関するもので、用途の一例として、PDPを用いる表示装置のバックカバーを挙げ、この金属板はアルミニウム素板の両面にリン酸クロメート皮膜を形成し、その上に樹脂皮膜を形成してなることが開示されている(例えば、特許文献3参照)。 On the other hand, it relates to a metal plate excellent in heat dissipation, conductivity and scratch resistance, and as an example of application, a back cover of a display device using PDP is cited. It is disclosed that a film is formed and a resin film is formed thereon (see, for example, Patent Document 3).
上記に記述したように、PDPを用いる表示装置のバックカバー用途材料には、従来からパネルの導電性を主体要求としてアルミニウム板等の非鉄材料が使われてきた。その後、意匠性の要求が高まり、色彩のバリエーションに富んだPCM塗装鋼板等も用いられている。 As described above, a non-ferrous material such as an aluminum plate has been conventionally used as a back cover material for a display device using a PDP, mainly for the conductivity of the panel. Thereafter, the demand for design has increased, and PCM coated steel sheets and the like rich in color variations have been used.
しかしながら、PCM塗装鋼板は塗膜厚みが数10g/m2と厚く、且つ塗装工程の作業性等の理由から比較的高価なため、近年、コストダウンの観点から、従来特性同等以上の性能を担保し、より低コストな意匠性めっき鋼板の開発が要求され始めた。 However, the PCM coated steel sheet has a coating thickness of several tens of g / m 2 and is relatively expensive for reasons such as workability in the coating process. However, development of a lower cost design plated steel sheet has begun to be required.
そこで、本発明は、このような問題に鑑みてなされたもので、廉価で用途特性に優れた薄型ディスプレイパネルを用いる表示装置のバックカバー用亜鉛系めっき鋼板を提供することを目的とするものである。 Accordingly, the present invention has been made in view of such problems, and an object thereof is to provide a zinc-based plated steel sheet for a back cover of a display device using a thin display panel that is inexpensive and excellent in application characteristics. is there.
本発明者らは,上記の問題を解決すべく鋭意検討し,本発明を完成した。本発明の要旨は,以下の通りである。 The present inventors diligently studied to solve the above problems and completed the present invention. The gist of the present invention is as follows.
(1)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、前記バックカバーの内面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜が形成されることを特徴とする、亜鉛系めっき鋼板。
(2)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、前記バックカバーの内面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜が形成されることを特徴とする、亜鉛系めっき鋼板。
(3)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が0.5〜5g/m2である着色有機系処理皮膜が形成され、前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。
(4)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。
(5)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。
(6)薄型ディスプレイパネルを用いる表示装置のバックカバー用の亜鉛系めっき鋼板であって、前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。
(7)着色有機系処理皮膜の上に、皮膜量が0.5〜5g/m2であるクリアー有機系処理皮膜が更に形成されることを特徴とする、上記(1)〜(6)のいずれかに記載に亜鉛系めっき鋼板。
(1) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein a coating amount is 1.0 on the surface of the zinc-based plated steel sheet on the outer surface side of the back cover. It was to 5.0 g / m 2, and Zn-Co plating film Co content in the plating is 0.2~1.0mass%, colored organic coating weight of 0.5 to 5 g / m 2 And an inorganic-organic composite treatment film having a film amount of 0.3 to 0.7 g / m 2 is formed on the surface of the back cover. A galvanized steel sheet.
(2) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein the coating amount is 1.0 on the surface of the zinc-based plated steel sheet that is the outer surface of the back cover. It was to 5.0 g / m 2, and Zn-Co plating film Co content in the plating is 0.2~1.0mass%, inorganic coating weight of 0.03 to 0.3 g / m 2 An organic composite treatment film and a colored organic treatment film having a coating amount of 0.5 to 5 g / m 2 are laminated in order, and the surface of the surface that is the inner surface of the back cover has a coating amount. A zinc-based plated steel sheet, wherein an inorganic-organic composite-based treatment film of 0.3 to 0.7 g / m 2 is formed.
(3) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein a coating amount is 0.5 on the surface of the zinc-based plated steel sheet on the outer surface side of the back cover. A colored organic treatment film having a thickness of ˜5 g / m 2 is formed, and the coating amount is 1.0 to 5.0 g / m 2 on the surface which is the inner surface of the back cover. A Zn—Co plating film having a Co content of 0.2 to 1.0 mass% and an inorganic-organic composite-based treatment film having a coating amount of 0.03 to 0.3 g / m 2 are sequentially laminated. A galvanized steel sheet.
(4) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein a coating amount is 0.3 on the surface of the zinc-based plated steel sheet on the outer surface side of the back cover. an inorganic organic composite based treatment film is ~0.7g / m 2, and the colored organic treatment film coating weight of 0.5 to 5 g / m 2, but are stacked in this order, the side serving as the inner surface of the back cover On the surface of the surface, the coating amount is 1.0 to 5.0 g / m 2 , the Co content during plating is 0.2 to 1.0 mass%, and the coating amount is A zinc-based plated steel sheet, characterized in that an inorganic-organic composite-based treatment film having a thickness of 0.03 to 0.3 g / m 2 is sequentially laminated.
(5) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein the coating amount is 1.0 on the surface of the zinc-based plated steel sheet on the outer surface side of the back cover. It was to 5.0 g / m 2, and Zn-Co plating film Co content in the plating is 0.2~1.0mass%, colored organic coating weight of 0.5 to 5 g / m 2 The coating film is laminated in order, and on the surface on the side that becomes the inner surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 , and the Co content during plating is 0.2. Zinc-based, characterized in that a Zn-Co plating film of ~ 1.0 mass% and an inorganic-organic composite-based treatment film with a coating amount of 0.03 to 0.3 g / m 2 are laminated in order. Plated steel sheet.
(6) A zinc-based plated steel sheet for a back cover of a display device using a thin display panel, wherein the coating amount is 1.0 on the surface of the zinc-based plated steel sheet that is the outer surface of the back cover. It was to 5.0 g / m 2, and Zn-Co plating film Co content in the plating is 0.2~1.0mass%, inorganic coating weight of 0.03 to 0.3 g / m 2 An organic composite treatment film and a colored organic treatment film having a coating amount of 0.5 to 5 g / m 2 are laminated in order, and the surface of the surface that is the inner surface of the back cover has a coating amount. 1.0 to 5.0 g / m 2, and Zn-Co plating film Co content in the plating is 0.2~1.0Mass%, coating weight of 0.03 to 0.3 g / m 2 Inorganic organic composite-based treatment film is laminated in order, Lead-plated steel sheet.
(7) The above-mentioned (1) to (6), wherein a clear organic treatment film having a film amount of 0.5 to 5 g / m 2 is further formed on the colored organic treatment film. A galvanized steel sheet according to any one of the above.
本発明の薄型ディスプレイパネルを用いる表示装置のバックカバー用亜鉛系めっき鋼板は、上述した構成よりなるので、皮膜厚みが小さくて低コスト化を実現でき、且つ薄型ディスプレイパネルを用いる表示装置のバックカバー用途性能を満足する。 Since the zinc-based plated steel sheet for a back cover of a display device using the thin display panel of the present invention has the above-described configuration, the film thickness is small and the cost can be reduced, and the back cover of the display device using the thin display panel is provided. Satisfies application performance.
以下に、本発明を詳細に説明する。
本発明の第1の実施形態に係る亜鉛系めっき鋼板は、薄型ディスプレイパネルを用いる表示装置のバックカバーの外面となる面が必要性能(例えば、意匠性と耐食性)を有するように、亜鉛系めっき鋼板の表面に、着色有機系処理皮膜単層、または無機有機複合系処理皮膜と着色有機系処理皮膜の複層、またはZn−Coめっき皮膜と着色有機系処理皮膜の複層、またはZn−Coめっき皮膜と無機有機複合系処理皮膜と着色有機系処理皮膜の三層を設け、且つバックカバーの内面となる面が必要性能(例えば、導電性と耐食性)を有するように、亜鉛系めっき鋼板の表面に、無機有機複合系処理皮膜単層またはZn−Coめっき皮膜と無機有機複合系処理皮膜の複層を設ける。また、場合によっては、更に耐色落ち性を付与するために、上記単層構造または複層構造の着色有機系処理皮膜の上にクリアー有機系処理皮膜を更に備えてもよい。表裏異なる皮膜構成を基本設計に持ち、且つ表裏皮膜の最適化を図ることで、薄型ディスプレイパネルを用いる表示装置のバックカバー用途に優れた、意匠性亜鉛系めっき鋼板を提供できる。
The present invention is described in detail below.
The zinc-based plated steel sheet according to the first embodiment of the present invention is zinc-plated so that the outer surface of the back cover of the display device using a thin display panel has necessary performance (for example, designability and corrosion resistance). On the surface of the steel sheet, a colored organic treatment coating single layer, an inorganic organic composite treatment coating and a coloring organic treatment coating, or a Zn-Co plating coating and a coloring organic treatment coating, or Zn-Co. Three layers of plating film, inorganic organic composite treatment film and colored organic treatment film are provided, and the surface to be the inner surface of the back cover has the required performance (for example, conductivity and corrosion resistance). A single layer of an inorganic / organic composite treatment film or a multilayer of a Zn—Co plating film and an inorganic / organic composite treatment film is provided on the surface. In some cases, in order to further impart color fading resistance, a clear organic treatment film may be further provided on the colored organic treatment film having the single layer structure or the multilayer structure. A design zinc-plated steel sheet excellent in the back cover application of a display device using a thin display panel can be provided by having the coating composition different in front and back in the basic design and optimizing the front and back coating.
ここで、上記の薄型ディスプレイパネルとしては、例えば、プラズマディスプレイパネル、液晶ディスプレイパネル、電解放出ディスプレイパネル等のディスプレイパネルがある。また、本実施形態に係る亜鉛系めっき鋼板は、例えば、パーソナルコンピュータ用のディスプレイやTVに使用されるディスプレイパネル等、あらゆる薄型ディスプレイパネルに用いることが可能である。 Here, examples of the thin display panel include display panels such as a plasma display panel, a liquid crystal display panel, and a field emission display panel. Moreover, the galvanized steel sheet according to the present embodiment can be used for any thin display panel such as a display for personal computers and a display panel used for TV.
本実施形態に係る薄型ディスプレイパネルを用いる表示装置のバックカバー用意匠性亜鉛系めっき鋼板において、バックカバーの外面となる面は、亜鉛系めっき鋼板の表面に直接着色有機系処理皮膜を有することで亜鉛系めっき鋼板のめっき腐食生成物が保持され、このバリアー効果によって耐赤錆性が向上する。他方、亜鉛系めっきと着色有機系処理皮膜との間に無機有機複合系処理皮膜を被覆することで、このバリアー効果は向上する。これは、無機有機複合系処理皮膜が、めっき表面の−O、−OH基や有機系皮膜表面の親水性官能基と水素結合やファンデルワールス力を介して架橋構造を形成するため、界面の密着力を向上させると共に、腐食の過程で無機有機複合系処理皮膜から無機成分が溶解し、腐食生成物の安定化に寄与するものと推定している。 In the back cover prepared galvanized steel sheet for a display device using a thin display panel according to the present embodiment, the surface to be the outer surface of the back cover has a colored organic processing film directly on the surface of the galvanized steel sheet. The plating corrosion product of the galvanized steel sheet is retained, and the red rust resistance is improved by this barrier effect. On the other hand, this barrier effect is improved by coating the inorganic organic composite treatment film between the zinc-based plating and the colored organic treatment film. This is because the inorganic / organic composite treatment film forms a crosslinked structure with —O, —OH groups on the plating surface and hydrophilic functional groups on the surface of the organic film via hydrogen bonds or van der Waals forces. It is estimated that the adhesion force is improved and the inorganic components are dissolved from the inorganic / organic composite treatment film in the course of corrosion, which contributes to the stabilization of the corrosion products.
同様に、亜鉛系めっきと着色有機系処理皮膜との間にZn−Coめっき皮膜を被覆することでも、このバリアー効果は向上する。これは、Zn−Coめっき皮膜表面の−O、−OH基が、有機系皮膜表面の親水性官能基と水素結合やファンデルワールス力を介して架橋構造を形成するため、界面の密着力を向上させると共に、腐食の過程でZn−Coめっき皮膜からCo成分が溶出し、塩基性塩化亜鉛等のZnの腐食生成物の安定化(化学的な保持効果)に寄与するものと推定している。 Similarly, this barrier effect can be improved by coating a Zn—Co plating film between the zinc-based plating and the colored organic-based treatment film. This is because the -O and -OH groups on the surface of the Zn-Co plating film form a cross-linked structure with the hydrophilic functional groups on the surface of the organic film through hydrogen bonds and van der Waals forces, so the adhesion at the interface is reduced. It is estimated that the Co component is eluted from the Zn-Co plating film in the course of corrosion and contributes to the stabilization (chemical retention effect) of corrosion products of Zn such as basic zinc chloride. .
更に、亜鉛系めっきの上にZn−Coめっき皮膜、無機有機複合系処理皮膜、着色有機系処理皮膜の順に皮膜被覆を行うことで、この効果は格段と向上し、優れた高耐食性が発現する。これは、無機有機複合系処理皮膜と着色有機系処理皮膜の腐食因子の透過抑制効果(物理的なバリアー効果)に加え、亜鉛系めっき鋼板のめっき腐食生成物が、Zn−Coめっき皮膜からの溶出したCoや、無機有機複合系処理皮膜から溶出した無機成分によって強力に保持(化学的な保持効果)され、これの物理的なバリアー効果によって、下地めっきの腐食を抑え、耐白錆性や耐赤錆性が向上するものと推定している。 Furthermore, by coating the zinc-based plating in the order of the Zn-Co plating film, the inorganic organic composite treatment film, and the colored organic treatment film, this effect is remarkably improved and excellent high corrosion resistance is exhibited. . This is because, in addition to the permeation suppression effect (physical barrier effect) of the corrosion factors of the inorganic organic composite treatment film and the colored organic treatment film, the plating corrosion product of the galvanized steel sheet is removed from the Zn-Co plating film. It is strongly retained (chemical retention effect) by the eluted Co and inorganic components eluted from the inorganic / organic composite coating film, and this physical barrier effect suppresses corrosion of the base plating, It is estimated that red rust resistance is improved.
一方、意匠性の観点からは、有機系皮膜中の顔料、ビーズ、アルミペースト等の種類および含有率を変化させることで、要求に合った多種多様な深みを持った意匠性外観が可能となる。 On the other hand, from the viewpoint of designability, by changing the type and content of pigments, beads, aluminum paste, etc. in the organic coating, it is possible to have a design appearance with a wide variety of depths that meet the requirements. .
更に、場合によって耐色落ち性を必要とするときは、着色有機系処理皮膜の上にクリアー有機系処理皮膜を被覆するようにしてもよい。このようなクリアー有機系処理皮膜を形成することで、双方の皮膜表面の官能基同士の水素結合やファンデルワールス力等を介して架橋構造が形成されるため、界面の密着力を担保し、且つクリアー有機系処理皮膜が着色有機系処理皮膜のガードコートの役割を担うため、加工時の面摺動や拭き取り時の着色有機系処理皮膜の耐色落ち性が著しく向上する。 Furthermore, when the color fading resistance is required in some cases, a clear organic treatment film may be coated on the colored organic treatment film. By forming such a clear organic treatment film, a cross-linked structure is formed through hydrogen bonding or van der Waals force between the functional groups of both film surfaces, ensuring the adhesion of the interface, In addition, since the clear organic treatment film serves as a guard coat for the colored organic treatment film, the color fading resistance of the colored organic treatment film during surface sliding or wiping is significantly improved.
他方、本実施形態に係る意匠性亜鉛系めっき鋼板の薄型ディスプレイパネルを用いる表示装置のバックカバーの内面となる面は、亜鉛系めっき鋼板の表面に薄膜の無機有機複合系処理皮膜を被覆することで導電性が確保され、且つめっきの腐食が抑制され、結果的に耐赤錆性が向上する。これは、無機有機複合系処理皮膜が、めっき表面の−O、−OH基と水素結合やファンデルワールス力を介して架橋構造を形成し、タイトな皮膜となっているため、めっき面への水、塩分等の腐食因子のバリアー効果を発現するためであると考えられる。同時に、腐食の過程で無機有機複合系処理皮膜から無機成分が溶解し、腐食生成物の安定化も寄与するものと推定している。 On the other hand, the surface which becomes the inner surface of the back cover of the display device using the thin display panel of the design zinc-plated steel sheet according to the present embodiment covers the surface of the zinc-plated steel sheet with a thin inorganic-organic composite treatment film. Thus, conductivity is ensured and corrosion of the plating is suppressed, resulting in improved red rust resistance. This is because the inorganic / organic composite-based treatment film forms a cross-linked structure through hydrogen bonding and van der Waals force with -O and -OH groups on the plating surface, and is a tight film. This is thought to be due to the manifestation of the barrier effect of corrosion factors such as water and salt. At the same time, it is presumed that the inorganic components are dissolved from the inorganic / organic composite coating film in the course of corrosion, which contributes to the stabilization of the corrosion products.
更に、亜鉛系めっき鋼板の表面にZn−Coめっき皮膜を被覆し、極薄膜の無機有機複合系処理皮膜を被覆することで更なる導電性と耐食性の向上がなされる。これは、Zn−Coめっき皮膜と無機有機複合系処理皮膜の極薄複層皮膜でありながら、めっき腐食生成物保持の相乗効果によって耐食性が良好となる。このため良導電性に乏しい無機有機複合系処理皮膜の極薄膜化が可能となり、優れた導電性が確保できるものと推定される。 Furthermore, the electroconductivity and corrosion resistance are further improved by coating the surface of the zinc-based plated steel sheet with a Zn—Co plating film and coating with an ultra-thin inorganic-organic composite treatment film. Although this is an ultrathin multilayer film of a Zn-Co plating film and an inorganic / organic composite treatment film, the corrosion resistance is improved due to the synergistic effect of maintaining the plating corrosion product. For this reason, it is presumed that an inorganic-organic composite-based treatment film with poor conductivity can be made extremely thin, and excellent conductivity can be secured.
上記Zn−Coめっき皮膜は、下限1.0g/m2、上限5.0g/m2の皮膜量で、下限0.2mass%、上限1.0mass%のめっき中のCo含有率で形成されたものである。皮膜量および組成がそれぞれ下限1.0g/m2未満且つ下限Co含有率0.2mass%未満であると、白錆や赤錆が発生し易くなり、耐食性は低下する。この理由としては、主にZn−Coめっき皮膜量とCo含有率が少なくCo溶出量も極めて少ないため、充分なめっき腐食生成物の保持効果が発揮できなくなることから、めっきの腐食が起こり易いためであると考えられる。一方、上限皮膜量および組成の根拠としては、製造コストの観点から5.0g/m2の皮膜量、1.0mass%のCo含有率を上限値とした。 The Zn—Co plating film was formed with a coating amount of a lower limit of 1.0 g / m 2 and an upper limit of 5.0 g / m 2 and a Co content in the plating of a lower limit of 0.2 mass% and an upper limit of 1.0 mass%. Is. When the coating amount and the composition are less than the lower limit of 1.0 g / m 2 and the lower limit Co content is less than 0.2 mass%, white rust and red rust are liable to occur, and the corrosion resistance is lowered. The reason for this is that since the amount of Zn-Co plating film and Co content is small and the amount of Co elution is very small, the effect of retaining a sufficient plating corrosion product cannot be exhibited, so that corrosion of the plating is likely to occur. It is thought that. On the other hand, as the basis for the upper limit film amount and the composition, the film amount of 5.0 g / m 2 and the Co content of 1.0 mass% were set as the upper limit values from the viewpoint of manufacturing cost.
また、安定した耐食性の確保と製造コストの最小化を図るためには、例えば、上記皮膜量下限は1.2g/m2、Co含有率下限は0.22mass%であることがより好ましく、上記皮膜量上限は4.8g/m2、Co含有率上限は0.98mass%であることがより好ましい。 Moreover, in order to ensure stable corrosion resistance and minimize the manufacturing cost, for example, the lower limit of the coating amount is preferably 1.2 g / m 2 , and the lower limit of the Co content is more preferably 0.22 mass%. The upper limit of the coating amount is more preferably 4.8 g / m 2 , and the upper limit of the Co content is more preferably 0.98 mass%.
上記Zn−Coめっきの亜鉛系メッキ鋼板へのめっき方法としては、電気めっき法、溶融めっき法、蒸着めっき法、置換めっき、溶融塩電解めっき法等の所定のめっき組成およびめっき付着量が確保できれば、どの方法を使用しても良い。 As a method of plating the zinc-co-plated steel sheet of the above Zn-Co plating, if a predetermined plating composition such as an electroplating method, a hot dipping method, a vapor deposition plating method, a displacement plating method, a hot salt electroplating method and the like can be secured. Any method can be used.
上記無機有機複合系処理皮膜は、下限0.3g/m2、上限0.7g/m2の皮膜量で形成されたものである。下限0.3g/m2未満であると、白錆や赤錆が発生し易くなり、耐食性は低下する。この理由としては、主にめっき表面の無機有機複合系処理皮膜の被覆量が極めて少なく充分に表面を覆えないため、腐食因子のバリアー効果が不足し、めっきの腐食が起き易いからであると考えられる。一方、上限皮膜量決定の理由としては、バックカバーの内面となる側の面の表面において上限皮膜量が0.7g/m2を超えると、皮膜が良伝導性でないため電磁波の不要輻射ノイズ漏れを防止するために必要とされる導電性が著しく低下するからである。安定した耐食性と導電性を確保するためには、例えば、上記下限は0.35g/m2であることがより好ましく、上記上限は0.65g/m2であることがより好ましい。 The inorganic-organic composite-based treatment film is formed with a film amount having a lower limit of 0.3 g / m 2 and an upper limit of 0.7 g / m 2 . When the lower limit is less than 0.3 g / m 2 , white rust and red rust are liable to occur, and the corrosion resistance decreases. This is mainly because the coating amount of the inorganic / organic composite treatment film on the plating surface is extremely small and the surface cannot be covered sufficiently, so that the barrier effect of the corrosion factor is insufficient and the corrosion of the plating is likely to occur. It is done. On the other hand, the reason for determining the upper limit film amount is that if the upper limit film amount exceeds 0.7 g / m 2 on the surface that is the inner surface of the back cover, the film is not well-conducting, so that unnecessary radiation noise leakage of electromagnetic waves occurs. This is because the electrical conductivity required to prevent the problem is significantly reduced. In order to ensure stable corrosion resistance and conductivity, for example, the lower limit is more preferably 0.35 g / m 2 , and the upper limit is more preferably 0.65 g / m 2 .
他方、上記無機有機複合系処理皮膜がZn−Coめっき皮膜を介して被覆される複層皮膜においては、Zn−Coめっき皮膜が下限1.0g/m2、上限5.0g/m2の皮膜量で、めっき中のCo含有率が下限0.2mass%、上限1.0mass%で、且つ無機有機複合系処理皮膜が下限0.03g/m2、上限0.3g/m2の皮膜量で形成される。Zn−Coめっき皮膜量が下限1.0g/m2から上限5.0g/m2の皮膜量で、且つめっき中のCo含有率が下限0.2mass%から上限1.0mass%の範囲において、耐食性は良好であるが、更に無機有機複合系処理皮膜が下限0.03g/m2以上で耐白錆性は格段と向上し、且つ上限0.3g/m2以下の皮膜量で導電性も格段と向上する。この理由としては、主にZn−Coめっき皮膜と無機有機複合系処理皮膜によるめっき腐食生成物の保持効果(化学的作用)に加え、極薄膜でも無機有機複合系処理皮膜の腐食因子のバリアー効果およびめっき腐食生成物の表面固定効果(物理的作用)を有するため、耐食性が著しく向上するからであると考えられる。従って、無機有機複合系処理皮膜単層の場合に比べ、Zn−Coめっき皮膜があることで耐食性が確保されるため、その分、良伝導性でない無機有機複合系処理皮膜の極薄膜化が可能となり、電磁波の不要輻射ノイズ漏れを防止するために必要とされる導電性も飛躍的に向上できたと考えられる。 On the other hand, in the multilayer film in which the inorganic-organic composite-based treatment film is coated through a Zn—Co plating film, the Zn—Co plating film has a lower limit of 1.0 g / m 2 and an upper limit of 5.0 g / m 2 . The amount of Co in the plating is a lower limit of 0.2 mass%, an upper limit of 1.0 mass%, and the inorganic-organic composite coating film has a lower limit of 0.03 g / m 2 and an upper limit of 0.3 g / m 2. It is formed. In the range where the Zn-Co plating film amount is the lower limit of 1.0 g / m 2 to the upper limit of 5.0 g / m 2 and the Co content during plating ranges from the lower limit of 0.2 mass% to the upper limit of 1.0 mass%, Corrosion resistance is good, but the inorganic organic composite treatment film has a lower limit of 0.03 g / m 2 or more and the white rust resistance is remarkably improved, and the upper limit is 0.3 g / m 2 or less and the conductivity is also good. Greatly improved. The reason for this is that, in addition to the retention effect (chemical action) of the plating corrosion product mainly by the Zn-Co plating film and the inorganic-organic composite treatment film, the barrier effect of the corrosion factor of the inorganic-organic composite treatment film even in extremely thin films Further, it is considered that the corrosion resistance is remarkably improved due to the surface fixing effect (physical action) of the plating corrosion product. Therefore, the corrosion resistance is ensured by the presence of the Zn-Co plating film compared to the case of a single layer of the inorganic / organic composite treatment film, so that it is possible to reduce the thickness of the inorganic / organic composite treatment film that is not highly conductive. Thus, it is considered that the conductivity required for preventing leakage of unnecessary radiation noise of electromagnetic waves can be dramatically improved.
安定した耐食性と、導電性の確保と、製造コストの最小化とを図るためには、例えば、Zn−Coめっき皮膜量の下限は1.2g/m2、Co含有率の下限は0.22mass%であり、皮膜量の上限は4.8g/m2、Co含有率上限は0.98mass%であることが好ましく、且つ無機有機複合系処理皮膜の下限が0.03g/m2、上限が0.28g/m2であることがより好ましい。 In order to ensure stable corrosion resistance, ensure electrical conductivity, and minimize manufacturing costs, for example, the lower limit of the amount of Zn—Co plating film is 1.2 g / m 2 , and the lower limit of the Co content is 0.22 mass. The upper limit of the coating amount is preferably 4.8 g / m 2 , the upper limit of the Co content is preferably 0.98 mass%, and the lower limit of the inorganic-organic composite-based treatment film is 0.03 g / m 2 , and the upper limit is More preferably, it is 0.28 g / m 2 .
上記無機有機複合系処理皮膜は、無機化合物を主体とし、無機塩は特に限定されないが、例えば、リン酸塩及びケイ酸塩の単独もしくは両方が配合されていることが望ましい。無機塩の種類としては、特に限定されることはないが、無機塩中のカチオン成分は亜鉛イオン、マグネシウムイオン、マンガンイオンが好ましい。 The inorganic-organic composite-based treatment film is mainly composed of an inorganic compound, and the inorganic salt is not particularly limited. For example, it is desirable that a single salt or both of phosphate and silicate are blended. The type of inorganic salt is not particularly limited, but the cation component in the inorganic salt is preferably zinc ion, magnesium ion, or manganese ion.
また、成膜性向上の観点から、上記無機有機複合系処理皮膜中に有機化合物を含有させている。有機化合物としては、例えば、有機チタン化合物、有機ケイ素化合物、ポリエステル系樹脂、ポリウレタン系樹脂、ポリオレフィン系樹脂、アクリル系樹脂、ビニル系樹脂、エポキシ系樹脂、シリコン系樹脂等を挙げることができる。これらの有機化合物のうち、エポキシ系樹脂、フェノール系樹脂、ウレタン系樹脂、アクリル酸系樹脂、有機ケイ素化合物が好ましく、上記無機塩と混合するか脱水縮合等の化学結合を用いて複合化しても良い。有機化合物の有機系官能基としては、脂肪族および芳香族炭化水素系官能基であれば、特に限定されることはなく、上記無機塩と脱水縮合等の化学結合を用いて複合化されることが望ましい。成膜性を向上させるために、有機系官能基の末端にアミノ基、エポキシ基等の反応性の異なる単独もしくは二種類以上の官能基を導入すると、更に好適である。 Moreover, the organic compound is contained in the said inorganic organic composite type processing film from a viewpoint of the film formability improvement. Examples of the organic compound include an organic titanium compound, an organic silicon compound, a polyester resin, a polyurethane resin, a polyolefin resin, an acrylic resin, a vinyl resin, an epoxy resin, and a silicon resin. Of these organic compounds, epoxy resins, phenol resins, urethane resins, acrylic resins, and organosilicon compounds are preferred, and may be mixed with the above inorganic salts or combined using chemical bonds such as dehydration condensation. good. The organic functional group of the organic compound is not particularly limited as long as it is an aliphatic and aromatic hydrocarbon functional group, and may be combined with the above inorganic salt using a chemical bond such as dehydration condensation. Is desirable. In order to improve the film formability, it is more preferable to introduce single or two or more kinds of functional groups having different reactivity such as amino group and epoxy group at the terminal of the organic functional group.
上記無機有機複合系処理皮膜は、耐食性向上の観点から、防錆処理剤に使用されうる防錆インヒビターを適宜含有してもよい。防錆インヒビターとしては、特に限定されることはないが、例えば、亜鉛、ケイ素、リン、マグネシウム、ジルコニウム、硫黄、バナジウム、アルミニウム、コバルト、チタン、マンガン、ニオブ、モリブデン、バリウム、タングステンの単体もしくはこれらを含有する酸化物、フッ化物、窒化物等の化合物の単独もしくは二種以上が配合されていることが好ましい。 From the viewpoint of improving corrosion resistance, the inorganic / organic composite-based treatment film may appropriately contain a rust inhibitor that can be used in a rust inhibitor. The rust inhibitor is not particularly limited, but for example, zinc, silicon, phosphorus, magnesium, zirconium, sulfur, vanadium, aluminum, cobalt, titanium, manganese, niobium, molybdenum, barium, tungsten, or these It is preferable that a single compound or a combination of two or more compounds such as oxides, fluorides, nitrides, and the like are contained.
上記の無機有機複合系処理皮膜における無機化合物(無機系成分)の具体例として、例えば、リン酸マグネシウム、硫酸マグネシウム、酸化マグネシウム、炭酸マグネシウム、硝酸マグネシウム、酸塩化ジルコニウム、硫酸ジルコニウム、酢酸ジルコニウム、バナジン酸アンモニウム、オキシ二塩化バナジウム、三酸化バナジウム、五酸化バナジウム、オキシシュウ酸バナジウム、チッ化バナジウム、オキシ硫酸バナジウム、バナジン酸ナトリウム、硫酸アルミニウム、酸化アルミニウム、塩化コバルト、硫酸コバルト、炭酸コバルト、酸化コバルト、硝酸コバルト、酢酸コバルト、酸化チタン、塩化チタン、チタン酸バリウム、チタンフッ化水素酸、塩化マンガン、硫酸マンガン、炭酸マンガン、四三酸化マンガン、硝酸マンガン、酢酸マンガン、二酸化マンガン、五塩化ニオブ、オキシ塩化ニオブ、五酸化ニオブ、シュウ酸水素ニオブ、ニオブ酸バリウム、モリブデン酸アンモニウム、モリブデン酸ナトリウム、三酸化モリブデン、三酸化タングステン、パラタングステン酸アンモニウム、メタタングステン酸アンモニウム、タングステン酸カリウム、タングステン酸カルシウム、塩化バリウム、炭酸バリウム、硝酸バリウム、酸化バリウム、硫酸バリウム、過酸化バリウム等を挙げることができる。しかしながら、本発明に係る無機有機複合系処理皮膜における無機化合物成分は、上記の化合物に限定されるわけではない。 Specific examples of the inorganic compound (inorganic component) in the inorganic-organic composite-based treatment film include, for example, magnesium phosphate, magnesium sulfate, magnesium oxide, magnesium carbonate, magnesium nitrate, zirconium oxychloride, zirconium sulfate, zirconium acetate, and vanadine. Ammonium acid, vanadium oxydichloride, vanadium trioxide, vanadium pentoxide, vanadium oxyoxalate, vanadium nitride, vanadium oxysulfate, sodium vanadate, aluminum sulfate, aluminum oxide, cobalt chloride, cobalt sulfate, cobalt carbonate, cobalt oxide , Cobalt nitrate, Cobalt acetate, Titanium oxide, Titanium chloride, Barium titanate, Titanium hydrofluoric acid, Manganese chloride, Manganese sulfate, Manganese carbonate, Manganese tetraoxide, Manganese nitrate, Manganese acetate Cancer, manganese dioxide, niobium pentachloride, niobium oxychloride, niobium pentoxide, niobium hydrogen oxalate, barium niobate, ammonium molybdate, sodium molybdate, molybdenum trioxide, tungsten trioxide, ammonium paratungstate, metatungstic acid Examples include ammonium, potassium tungstate, calcium tungstate, barium chloride, barium carbonate, barium nitrate, barium oxide, barium sulfate, and barium peroxide. However, the inorganic compound component in the inorganic-organic composite-based treatment film according to the present invention is not limited to the above compounds.
上記無機有機複合系処理皮膜を形成する処理液としては、無機塩の解離イオンを主成分として、さらに有機樹脂等の有機系官能基を含む有機化合物、防錆インヒビター等が必要に応じて添加された処理液が使用できる。 As the treatment liquid for forming the inorganic organic composite treatment film, an organic compound containing an organic functional group such as an organic resin, an anticorrosion inhibitor, etc., which are mainly composed of dissociated ions of an inorganic salt, are added as necessary. Can be used.
上記無機有機複合系処理剤による亜鉛系めっき鋼板への処理方法としては、浸漬型処理、塗布型処理のいずれの方法によっても上記無機有機複合系処理皮膜を形成させることが可能である。浸漬型処理としては、例えば、亜鉛系めっき鋼板に脱脂、水洗を行った後に、上記無機系処理液と接触させ、リンガーロール法やエアナイフ法等によって膜厚を制御した後に乾燥を行うことにより、上記無機有機複合系処理皮膜を形成することができる。上記無機有機複合系処理皮膜の皮膜量は、たとえばリンガーロール法であればロール押し付け圧、エアナイフ法ではエア圧の調整によりそれぞれ制御が可能である。 As a method for treating the zinc-based plated steel sheet with the inorganic-organic composite-based treatment agent, the inorganic-organic composite-based treatment film can be formed by any of immersion-type treatment and coating-type treatment. As an immersion type treatment, for example, after degreasing and washing with a zinc-based plated steel sheet, it is brought into contact with the above-mentioned inorganic treatment liquid and dried after controlling the film thickness by the Ringer roll method or the air knife method, The inorganic-organic composite-based treatment film can be formed. The amount of the inorganic-organic composite-based treatment film can be controlled, for example, by adjusting the roll pressing pressure in the case of the Ringer roll method and adjusting the air pressure in the air knife method.
塗布型処理としては、例えば、亜鉛系めっき鋼板に、必要な皮膜量に応じた量の上記無機有機複合系処理液をロールコート法により必要な塗布量に調整する方法がある。上記無機有機複合系処理液を亜鉛系めっき鋼板に塗布した後、乾燥炉等を用いて乾燥させることにより、皮膜を形成させる。 As a coating type treatment, for example, there is a method of adjusting the amount of the above-mentioned inorganic-organic composite-based treatment liquid in a zinc-based plated steel sheet to a required coating amount by a roll coating method. After apply | coating the said inorganic organic composite type processing liquid to a zinc-type plated steel plate, a membrane | film | coat is formed by making it dry using a drying furnace etc.
上記着色有機系処理皮膜単層は、亜鉛系めっきの上に下限0.5g/m2、上限5g/m2の皮膜量で形成されたものである。下限0.5g/m2未満であると、白錆や赤錆が発生し易くなり、耐食性は低下する。この理由としては、めっき表面のうねりの頂上部位での有機皮膜厚みが薄くなり、この部位での腐食因子の透過性が高くなるため、めっきの腐食が起き易いからであると考えられる。一方、上限5g/m2の皮膜量を超えると、ロールコーター系の塗布方法で容易に有機皮膜厚みを制御することが難しく(すなわち均一膜厚成膜がしづらく)、塗布ムラ模様が発生しやすくなるため、外観品位上も難しい。安定した耐食性と、成膜性の確保と、製造コストの最小化とを図るためには、例えば、上記下限は0.7g/m2であることがより好ましく、上記上限は4.5g/m2であることがより好ましい。 The colored organic treatment coating single layer is formed on a zinc plating with a coating amount of a lower limit of 0.5 g / m 2 and an upper limit of 5 g / m 2 . When the lower limit is less than 0.5 g / m 2 , white rust and red rust are liable to occur, and the corrosion resistance decreases. This is probably because the thickness of the organic film at the top portion of the undulation on the plating surface is reduced and the permeability of the corrosion factor at this portion is increased, so that corrosion of the plating is likely to occur. On the other hand, when the coating amount exceeds the upper limit of 5 g / m 2 , it is difficult to easily control the thickness of the organic coating by a roll coater coating method (that is, it is difficult to form a uniform film thickness), and uneven coating pattern occurs. Because it becomes easy, it is difficult to improve the appearance quality. In order to secure stable corrosion resistance, ensure film formability, and minimize manufacturing costs, for example, the lower limit is more preferably 0.7 g / m 2 and the upper limit is 4.5 g / m. 2 is more preferable.
更に、上記着色有機系処理皮膜と亜鉛系めっきとの間に、上記の皮膜量上下限を有するZn−Coめっき皮膜や無機有機複合系処理皮膜を被覆することで、耐食性は著しく向上し、且つ意匠性には特に影響を与えない。 Furthermore, between the colored organic treatment film and the zinc plating, the corrosion resistance is remarkably improved by coating a Zn-Co plating film or an inorganic organic composite treatment film having the above-mentioned upper and lower film amount, and There is no particular influence on the design.
上記着色有機系処理皮膜は、有機化合物に各種着色顔料を含む皮膜であるが、更に、この中にビーズ、アルミペースト、増粘剤、有機防錆剤、無機防錆剤、染料、界面活性剤、潤滑剤等の他の添加剤が、単独もしくは二種以上配合されていてもよい。ここで、添加剤の材質等は特に限定されない。特に、ビーズやアルミペーストを添加することで、ゆず肌感やメタリック調の意匠性を得ることができる。 The colored organic treatment film is a film containing various colored pigments in an organic compound, and further includes beads, aluminum paste, thickener, organic rust preventive agent, inorganic rust preventive agent, dye, and surfactant. Other additives such as a lubricant may be used alone or in combination of two or more. Here, the material of the additive is not particularly limited. In particular, by adding beads and aluminum paste, it is possible to obtain a yuzu skin feeling and a metallic design.
上記有機化合物の役割は、着色有機系処理皮膜中に含有させることによって、めっき上に欠陥のない均一な着色有機系処理皮膜を形成させることである。また、着色顔料等の添加剤を皮膜中で固定するのに好適である。更に、無機有機複合系処理皮膜をめっきと着色有機系処理皮膜との間に形成させると、めっきと着色有機系処理皮膜間の密着性は更に向上する。 The role of the organic compound is to form a uniform colored organic treatment film having no defects on the plating by being contained in the colored organic treatment film. Moreover, it is suitable for fixing additives, such as a color pigment, in a film | membrane. Furthermore, when an inorganic organic composite treatment film is formed between the plating and the colored organic treatment film, the adhesion between the plating and the colored organic treatment film is further improved.
上記有機化合物としては主に有機樹脂であり、特に限定されないが、例えば、ポリエステル樹脂、ポリウレタン樹脂、ポリオレフィン樹脂、アクリル樹脂、ビニル樹脂、エポキシ樹脂、シリコン樹脂等の単独もしくは二種以上の混合物、または複数樹脂の変性体を使用することが、添加剤の皮膜中での固定および無機有機複合系処理皮膜もしくはめっきと着色有機系処理皮膜の密着性の向上に好適である。 The organic compound is mainly an organic resin and is not particularly limited. For example, a polyester resin, a polyurethane resin, a polyolefin resin, an acrylic resin, a vinyl resin, an epoxy resin, a silicon resin, or a mixture of two or more kinds, or Use of a modified product of a plurality of resins is suitable for fixing the additive in the film and improving the adhesion between the inorganic / organic composite-type treatment film or the plating and the colored organic-type treatment film.
上記着色有機系処理皮膜は、亜鉛系めっき鋼板に直接またはZn−Coめっきや無機有機複合系処理皮膜を介して、上記着色有機系処理剤を塗布することによって形成することができる。上記塗布方法としては、均一な成膜がなされ塗膜厚が制御出来さえすれば、特に限定されず、例えば、浸漬法、スプレー法、エアレススプレー法、ロール法等を挙げることができる。 The colored organic treatment film can be formed by applying the colored organic treatment agent directly or via a Zn-Co plating or inorganic / organic composite treatment film on a zinc-based plated steel sheet. The application method is not particularly limited as long as uniform film formation is possible and the coating thickness can be controlled, and examples include an immersion method, a spray method, an airless spray method, and a roll method.
上記クリアー有機系処理皮膜は、下限0.5g/m2、上限5g/m2の皮膜量で形成されたものである。下限0.5g/m2未満であると、耐色落ち性は低下する。この理由としては、クリアー有機系処理皮膜量が少ないと、着色有機系処理皮膜の色落ちのバリアー効果が効かず、上限5g/m2の皮膜量を超えると、ロールコーター系の塗布方法で容易に有機皮膜厚みを制御することが難しく(すなわち均一膜厚成膜がしづらく)、塗布ムラ模様が発生しやすくなるため外観品位上も難しい。安定した耐色落ち性と成膜性とを確保するためには、例えば、上記下限は0.7g/m2であることがより好ましく、上記上限は4.5g/m2であることがより好ましい。 The clear organic treatment film is formed with a film amount having a lower limit of 0.5 g / m 2 and an upper limit of 5 g / m 2 . When the lower limit is less than 0.5 g / m 2 , the color fading resistance decreases. The reason for this is that if the amount of the clear organic treatment film is small, the barrier effect of discoloration of the colored organic treatment film does not work, and if the amount exceeds the upper limit of 5 g / m 2 , it is easy to apply by a roll coater type coating method. In addition, it is difficult to control the thickness of the organic film (that is, it is difficult to form a uniform film thickness), and an uneven coating pattern tends to occur, so that the appearance quality is also difficult. In order to ensure stable color fading resistance and film formability, for example, the lower limit is more preferably 0.7 g / m 2 , and the upper limit is more preferably 4.5 g / m 2. preferable.
上記クリアー有機系処理皮膜は、有機化合物であるが、更に、この中に増粘剤、有機防錆剤、無機防錆剤、界面活性剤、潤滑剤等の他の添加剤が、単独あるいは二種以上配合されていてもよい。ここで、添加剤の材質等は特に限定されない。 The clear organic treatment film is an organic compound, and other additives such as thickeners, organic rust preventives, inorganic rust preventives, surfactants, and lubricants may be used alone or in combination. More than one species may be blended. Here, the material of the additive is not particularly limited.
上記有機化合物の役割は、クリアー有機系処理皮膜中に含有されることによって、めっき上に欠陥のない均一なクリアー有機系処理皮膜を形成させることである。また、潤滑剤(wax)等の添加剤を皮膜中で固定するのに好適である。更に、有機化合物は着色有機系処理皮膜とクリアー有機系処理皮膜間の密着性の向上に寄与する。 The role of the organic compound is to form a uniform clear organic treatment film having no defects on the plating by being contained in the clear organic treatment film. It is also suitable for fixing additives such as a lubricant (wax) in the film. Furthermore, an organic compound contributes to the improvement of the adhesiveness between a coloring organic processing film and a clear organic processing film.
上記有機化合物としては主に有機樹脂であり、特に限定されないが、例えば、ポリエステル樹脂、ポリウレタン樹脂、ポリオレフィン樹脂、アクリル樹脂、ビニル樹脂、エポキシ樹脂、シリコン樹脂等の単独もしくは二種以上の混合物、または複数樹脂の変性体を使用することが、添加剤の皮膜中での固定および着色有機系処理皮膜とクリアー有機系処理皮膜の密着性の向上に好適である。 The organic compound is mainly an organic resin and is not particularly limited. For example, a polyester resin, a polyurethane resin, a polyolefin resin, an acrylic resin, a vinyl resin, an epoxy resin, a silicon resin, or a mixture of two or more kinds, or Use of a modified product of a plurality of resins is suitable for fixing the additive in the film and improving the adhesion between the colored organic treatment film and the clear organic treatment film.
上記クリアー有機系処理皮膜の塗布方法としては、均一な成膜がなされ塗膜厚が制御出来さえすれば、特に限定されず、例えば、浸漬法、スプレー法、エアレススプレー法、ロール法等を挙げることができる。 The application method of the clear organic treatment film is not particularly limited as long as uniform film formation is possible and the film thickness can be controlled, and examples include an immersion method, a spray method, an airless spray method, and a roll method. be able to.
本実施形態に係る薄型ディスプレイパネルを用いる表示装置のバックカバー用意匠性亜鉛系めっき鋼板に使用する亜鉛系めっき鋼板としては、特に限定されず、例えば、亜鉛めっき鋼板、亜鉛−ニッケルめっき鋼板、亜鉛−鉄めっき鋼板、亜鉛−クロムめっき鋼板、亜鉛−マンガンめっき鋼板、亜鉛−アルミニウムめっき鋼板、亜鉛−マグネシウムめっき鋼板等の亜鉛系の電気めっき、溶融めっき、蒸着めっき、置換めっき鋼板等の亜鉛又は亜鉛系合金めっき鋼板等を挙げることができる。 There is no particular limitation on the zinc-based plated steel sheet used for the design-coverable zinc-based plated steel sheet of the display device using the thin display panel according to the present embodiment. For example, a galvanized steel sheet, a zinc-nickel plated steel sheet, zinc -Zinc or zinc such as iron-plated steel plate, zinc-chromium plated steel plate, zinc-manganese plated steel plate, zinc-aluminum plated steel plate, zinc-magnesium plated steel plate, etc. An alloy-plated steel sheet can be mentioned.
なお、上記のZn−Coめっき皮膜や無機有機複合系処理皮膜や着色有機系処理皮膜やクリアー有機系処理皮膜の付着量は、例えば皮膜形成前および皮膜形成後の亜鉛系めっき鋼板の質量をそれぞれ測定し、皮膜形成前後での質量差を被覆面積で除することで決定することができる。 In addition, the adhesion amount of the above-described Zn-Co plating film, inorganic organic composite treatment film, colored organic treatment film or clear organic treatment film is, for example, the mass of the zinc-plated steel sheet before and after the film formation, respectively. It can be determined by measuring and dividing the mass difference before and after film formation by the coating area.
また、上記の無機有機複合系処理皮膜や着色有機系処理皮膜やクリアー有機系処理皮膜を形成するための塗布液は、例えば蒸留水に所定比率の成分を固形分濃度が所定範囲(例えば、10〜20質量%)になるように添加し、常温で均一分散するまで撹拌を行うことで製造することができる。 In addition, the coating liquid for forming the inorganic organic composite treatment film, the colored organic treatment film, or the clear organic treatment film has, for example, a predetermined ratio of components in distilled water and a solid content concentration in a predetermined range (for example, 10 ˜20 mass%) and can be produced by stirring until uniform dispersion at room temperature.
また、上記のZn−Coめっき皮膜におけるCo含有率は、例えば以下のような方法を用いることで測定することができる。まず、所定面積の試料上のZn−Coめっきを、所定量の酸溶液で完全に溶解させた後、Zn−Coめっきが溶けた溶液を化学分析し、Zn、Co濃度(g/リットル)を求める。これより、溶液中に溶解したZn、Co量(g)=所定量の酸溶液(リットル)×Zn、Co濃度(g/リットル)の関係を用いて、溶液中に溶解したZn,Co量(g)を求める。続いて、得られた溶液中に溶解したZn、Co量(g)を試料面積(m2)で除することで、単位面積あたりのZn,Co付着量(g/m2)を求める。ここで、Co含有率(mass%)=Co付着量/(Zn付着量+Co付着量)×100の関係を用いることで、Co含留率を決定することができる。ここで、上記の化学分析を行う機器として、例えば原子吸光光度計(ICP)を用いることができる。 Moreover, Co content rate in said Zn-Co plating membrane | film | coat can be measured by using the following methods, for example. First, Zn—Co plating on a sample of a predetermined area is completely dissolved with a predetermined amount of acid solution, and then the solution in which the Zn—Co plating is dissolved is chemically analyzed to determine Zn and Co concentrations (g / liter). Ask. Thus, using the relationship of Zn and Co dissolved in the solution (g) = predetermined amount of acid solution (liter) × Zn and Co concentration (g / liter), the amounts of Zn and Co dissolved in the solution ( g). Subsequently, by dividing the Zn and Co amounts (g) dissolved in the obtained solution by the sample area (m 2 ), the Zn and Co adhesion amounts (g / m 2 ) per unit area are obtained. Here, the Co content rate can be determined by using the relationship of Co content rate (mass%) = Co adhesion amount / (Zn adhesion amount + Co adhesion amount) × 100. Here, for example, an atomic absorption photometer (ICP) can be used as an instrument for performing the above chemical analysis.
本発明は、薄型ディスプレイパネルを用いる表示装置のバックカバーの外面となる側の面には、皮膜量が0.5〜5g/m2である着色有機系処理皮膜を形成するか、または皮膜量が1.0〜5.0g/m2であり、かつ、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜を第一層として形成し、皮膜量が0.5〜5g/m2である着色有機系処理皮膜を第二層として形成するか、または、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜を第一層として形成し、皮膜量が0.5〜5g/m2である着色有機系処理皮膜を第二層として形成するか、または、皮膜量が1.0〜5.0g/m2であり、かつ、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜を第一層として形成し、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜を第二層として形成し、皮膜量が0.5〜5g/m2である着色有機系処理皮膜を第三層として形成し、その上に場合により皮膜量が0.5〜5.0g/m2であるクリアー有機系処理皮膜を形成する。また、カバーの内面となる側の面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜を形成するか、または皮膜量が1.0〜5.0g/m2であり、かつ、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜を第一層として形成し、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜を第二層として形成する。このようにして各皮膜を形成することにより、鋼板の全面を、均一皮膜で覆うことができる。 According to the present invention, a colored organic treatment film having a coating amount of 0.5 to 5 g / m 2 is formed on the outer surface of the back cover of the display device using the thin display panel, or the coating amount. A Zn—Co plating film having a Co content of 0.2 to 1.0 mass% is formed as the first layer with a coating amount of 0 to 5.0 g / m 2. or to form a colored organic treatment film is .5~5g / m 2 as the second layer, or an inorganic organic composite based treatment film coating weight of 0.03 to 0.3 g / m 2 first layer formed as, or to form a colored organic treatment film coating weight of 0.5 to 5 g / m 2 as the second layer, or coating weight of 1.0 to 5.0 g / m 2, and A Zn-Co plating film having a Co content of 0.2 to 1.0 mass% during plating. Formed by a further, inorganic organic composite based treatment film coating weight of 0.03 to 0.3 g / m 2 to form a second layer, the colored organic coating weight of 0.5 to 5 g / m 2 A treatment film is formed as a third layer, and a clear organic treatment film having a film amount of 0.5 to 5.0 g / m 2 is optionally formed thereon. In addition, an inorganic organic composite treatment film having a film amount of 0.3 to 0.7 g / m 2 is formed on the surface on the inner surface of the cover, or the film amount is 1.0 to 5.0 g. / m 2, and the Zn-Co plating film Co content is 0.2~1.0Mass% during plating to form a first layer, coating weight of 0.03 to 0.3 g / m 2 is formed as the second layer. By forming each film in this way, the entire surface of the steel sheet can be covered with a uniform film.
これにより、亜鉛系めっき鋼板のめっき表面と無機有機複合系処理皮膜、およびZn−Coめっきのめっき表面と無機有機複合系処理皮膜、亜鉛系めっき鋼板のめっき表面と着色有機系処理皮膜、Zn−Coめっきのめっき表面と着色有機系処理皮膜、無機有機複合系処理皮膜と着色有機系処理皮膜、着色有機系処理皮膜とクリアー有機系処理皮膜の各界面の密着力を向上させることが可能となり、薄型ディスプレイパネルを用いる表示装置のバックカバーの具備すべき主たる性能要件である、バックカバーの外面となる側の面の必要性能(例えば、意匠性と耐食性、外観品位、特にクリアー有機系処理皮膜の被覆があることで耐色落ち性)、および内面となる側の面の必要性能(例えば、導電性と耐食性)が同時に確保できる。従って、本発明の意匠性亜鉛系めっき鋼板を適用することで、充分な薄型ディスプレイパネルを用いる表示装置のバックカバー用途性能を満足できる。 Thus, the plating surface of the zinc-based plated steel sheet and the inorganic organic composite treatment film, the plating surface of the Zn-Co plating and the inorganic organic composite treatment film, the plating surface of the zinc-based plated steel sheet and the colored organic treatment film, Zn- Co-plating surface and colored organic treatment film, inorganic organic composite treatment film and colored organic treatment film, adhesion between each interface of colored organic treatment film and clear organic treatment film can be improved, The required performance of the outer surface of the back cover, which is the main performance requirement of the back cover of a display device using a thin display panel (for example, design and corrosion resistance, appearance quality, especially clear organic treatment film By providing the coating, it is possible to simultaneously ensure the color fading resistance) and the required performance (for example, conductivity and corrosion resistance) of the surface on the inner surface side. Therefore, application of the designable zinc-based plated steel sheet according to the present invention can satisfy the back cover application performance of a display device using a sufficiently thin display panel.
以下に、本発明について実施例を掲げて更に詳しく説明するが、本発明はこれらの実施
例のみに限定されるものではない。
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to only these examples.
用いためっき鋼板を表1、Zn−Coめっき作製水準を表2、無機有機複合系処理皮膜
水準を表3、着色有機系処理皮膜水準を表4−1、クリアー有機系処理皮膜を表4−2にそれぞれ示す。なお、Zn−Coめっき皮膜は、表2に記載のめっき条件に基づいて作製した。
Table 1 shows the plated steel sheet used, Table 2 shows the Zn-Co plating production level, Table 3 shows the inorganic / organic composite treatment film level, Table 4-1 shows the colored organic treatment film level, and Table 4 shows the clear organic treatment film. 2 respectively. The Zn—Co plating film was prepared based on the plating conditions shown in Table 2.
これらの組み合わせによって、本発明に示す意匠性亜鉛系めっき鋼板を作製し、導電性、外観品位性、耐食性、耐色落ち性を調査した。なお、無機有機複合系処理皮膜は、表3に示した1〜11の塗布液を市販のゴムロールコーターにて塗布し、鋼板到達温度110〜180℃で焼付け放冷し作製した。着色有機系処理皮膜は、表4−1に示した1〜10の塗布液を市販のゴムロールローターにて塗布し、鋼板到達温度110〜180℃で焼付け放冷し作製した。また、各皮膜の付着量は、皮膜形成前後の質量差を被覆面積で除することで決定した。なお、表3に示した1〜11の塗布液の無機系成分と有機系成分との質量比、および、有機樹脂と有機チタン化合物もしくは有機ケイ素化合物との質量比は、表3に記載の通りである。クリアー有機系処理皮膜は表4−2に示したに示した1〜10の塗布液を市販のゴムロールローターにて塗布し、鋼板到達温度110〜180℃で焼付け放冷し作製した。各種評価内容および基準は次の通りである。 By these combinations, a designable zinc-based plated steel sheet shown in the present invention was produced, and conductivity, appearance quality, corrosion resistance, and color fading resistance were investigated. The inorganic / organic composite-based treatment film was prepared by applying the coating liquids 1 to 11 shown in Table 3 with a commercially available rubber roll coater and baking and cooling at a steel sheet reaching temperature of 110 to 180 ° C. The colored organic treatment film was prepared by applying the coating liquids 1 to 10 shown in Table 4-1 with a commercially available rubber roll rotor, and baking and cooling at a steel sheet arrival temperature of 110 to 180 ° C. Moreover, the adhesion amount of each film was determined by dividing the mass difference before and after the film formation by the coating area. In addition, the mass ratio of the inorganic component and the organic component of the coating solutions 1 to 11 shown in Table 3 and the mass ratio of the organic resin to the organic titanium compound or the organosilicon compound are as shown in Table 3. It is. The clear organic treatment film was prepared by applying the coating liquids 1 to 10 shown in Table 4-2 with a commercially available rubber roll rotor, and baking and cooling at a steel sheet arrival temperature of 110 to 180 ° C. Various evaluation contents and criteria are as follows.
(導電性評価方法)
平滑なA4サイズの平板表面をロレスター4探針法(ロレスターEP)を用いて、任意に10点の表面抵抗を測定した。評価基準は以下の通りである。
(Conductivity evaluation method)
Ten smooth surface resistances were measured on a smooth A4 size flat plate surface using the Lorester 4 probe method (Lorester EP). The evaluation criteria are as follows.
導電性(評価4点以上が合格)
評点5:1mΩ未満が10点中10点
4:1mΩ未満が10点中8〜9点
3:1mΩ未満が10点中6〜7点
2:1mΩ未満が10点中4〜5点
1:1mΩ未満が10点中0〜3点
以上の評価結果を、以下に示す表5−1から5−6中に示した。
Conductivity (4 or more evaluations pass)
Rating 5: Less than 1 mΩ is 10 points out of 10 4: Less than 1 mΩ is 8-9 points out of 10 points 3: Less than 1 mΩ is 6-7 points out of 10 points 2: Less than 1 mΩ is 4-5 points out of 10 points 1: 1 mΩ The evaluation results of 0 to 3 or more out of 10 points are shown in Tables 5-1 to 5-6 shown below.
(外観品位性評価方法)
ロールコーター法を用いてA4サイズの平板に着色有機系処理皮膜を塗布し、目視にて塗布ムラ模様発生の有無を目視評価した。評価基準は以下の通りである。
(Appearance quality evaluation method)
A colored organic processing film was applied to an A4 size flat plate using a roll coater method, and the presence / absence of occurrence of uneven coating was visually evaluated. The evaluation criteria are as follows.
外観品位性(評価2点が合格)
評点2:目視判定で塗布ムラ模様発生無し
1:目視判定で塗布ムラ模様発生有り
以上の評価結果を、以下に示す表5−1から5−7中に示した。
Appearance quality (evaluation is 2 points)
Rating 2: No occurrence of uneven coating pattern by visual judgment 1: Existence of occurrence of uneven coating pattern by visual judgment is shown in Tables 5-1 to 5-7 below.
(耐食性評価方法)
平板を150mm(長手)×70mm(幅)サイズに切断し、長手方向下から50mmの位置に7mm高さのエルクセン張り出しを行い、板端面部と裏面部を市販の防錆テープでシーリングした後で、塩水噴霧試験SST(JIS Z2371)環境に仰角60°で放置し、3日後の腐食外観を下記の評点で評価した。評価基準は以下の通りである。百分率は部位の錆発生面積率を表す。平面部、張り出し部それぞれについて、耐食性評価3点以上が合格である。
(Corrosion resistance evaluation method)
After cutting the flat plate into a size of 150 mm (long) x 70 mm (width), projecting 7 mm high Elksen at a position 50 mm from the bottom in the longitudinal direction, and sealing the plate end surface and back with a commercially available rust preventive tape The salt spray test SST (JIS Z2371) environment was left at an elevation angle of 60 °, and the corrosion appearance after 3 days was evaluated according to the following rating. The evaluation criteria are as follows. The percentage represents the rust generation area ratio of the part. For each of the flat surface portion and the overhang portion, a corrosion resistance evaluation of 3 points or more is acceptable.
平面部
評点5:白錆発生なし
4:白錆発生50%
3:全面白錆発生
2:白錆発生多、赤錆発生微少
1:赤錆発生多
Flat part Rating 5: No white rust generation 4: White rust generation 50%
3: White rust generation 2: White rust generation, red rust generation small 1: Red rust generation high
張り出し部
評点5:白錆発生50%未満
4:全面白錆発生
3:赤錆発生50%未満
2:全面赤錆発生
1:全面赤錆発生
以上の評価結果を、以下に示す表5−1から5−6中に示した。
Overhang part Rating 5: White rust generation less than 50% 4: Full surface white rust generation 3: Red rust generation less than 50% 2: Full surface red rust generation 1: Evaluation results over the entire surface red rust generation are shown in Tables 5-1 to 5- This is shown in FIG.
(耐色落ち性評価方法)
平板を150mm(長手)×70mm(幅)サイズに切断し、長手方向に摺動試験機により、市販の白ネル(布)を用いて、荷重500g/cm2、ストローク30mmの往復スライド摩耗にて5000回往復後の布への色付き、平板上の色落ち痕の発生を、目視評価により下記の評点で評価した。評価基準は以下の通りである。耐色落ち性評価3点以上が合格である。
(Color fading resistance evaluation method)
A flat plate is cut into a size of 150 mm (long) x 70 mm (width), and in a longitudinal direction, using a sliding tester, a commercially available whitenell (cloth) is used for reciprocating sliding wear with a load of 500 g / cm 2 and a stroke of 30 mm. The occurrence of coloring on the cloth after 5000 reciprocations and the occurrence of discoloration marks on the flat plate were evaluated by visual evaluation with the following scores. The evaluation criteria are as follows. A color fading resistance evaluation of 3 points or more is acceptable.
評点5:平板表面外観変化なし、布着色なし
4:平板表面外観変化なし、布着色微少
3:平板上の色落ち痕微少、布着色微少
2:明らかな平板上の色落ち痕あり、布着色あり
1:メッキ下地露出、布着色大
以上の評価結果を、以下の表5−7中に示した。
Score 5: No change in the appearance of the flat plate surface, no coloration of the cloth 4: No change in the appearance of the flat plate surface, slight coloration of the cloth 3: A slight color fading mark on the flat plate, a slight coloration of the cloth 2: There is a clear color fading mark on the flat plate Existence 1: Evaluation results of plating base exposure and cloth coloration are shown in Table 5-7 below.
表5−1から5−6の評価結果に示す通り、本発明の製造方法で作製した本発明鋼板(実施例No.1〜123)は、内面となる側の面の導電性と耐食性、および外面となる側の面の外観品位性、耐食性が良好である。それに比較して、本発明範囲を逸脱する場合(比較例No.1〜42)は、導電性あるいは外観品位、耐食性が不良である。すなわち、本発明は、薄型ディスプレイパネルを用いる表示装置のバックカバーの外面となる側の面と内面となる側の面にそれぞれ前出の構成からなる皮膜を所定量有することで薄型ディスプレイパネルを用いる表示装置のバックカバーとして必要とされる性能を具備できることがわかった。 As shown in the evaluation results of Tables 5-1 to 5-6, the steel sheet of the present invention (Example Nos. 1 to 123) prepared by the manufacturing method of the present invention has conductivity and corrosion resistance on the surface that becomes the inner surface, and Appearance quality and corrosion resistance of the outer surface are good. On the other hand, when deviating from the scope of the present invention (Comparative Examples No. 1 to 42), the conductivity, appearance quality, and corrosion resistance are poor. That is, the present invention uses the thin display panel by having a predetermined amount of the coating film having the above-described configuration on the outer surface and the inner surface of the back cover of the display device using the thin display panel. It was found that the performance required for the back cover of the display device can be provided.
その上に更に皮膜量が0.5〜5.0g/m2であるクリアー有機系処理皮膜を形成することで、前出の表5−7の評価結果に示す通り、上記の製造方法で作製した本発明鋼板(実施例No.124−139)は、耐色落ち性と外面品位性に極めて優れることがわかった。それに比較して、本発明範囲を逸脱する場合(比較例No.43−52)は、耐色落ち性または外面品位性のどちらかが不良であることがわかった。また、クリアー有機系処理皮膜を形成しない場合(比較例No.53−58)は、耐色落ち性が不良であることがわかった。 Further, by forming a clear organic treatment film having a film amount of 0.5 to 5.0 g / m 2 thereon, as shown in the evaluation results in Table 5-7, the production method described above is used. It was found that the inventive steel plate (Example No. 124-139) was extremely excellent in color fading resistance and external surface quality. In contrast, when it deviated from the scope of the present invention (Comparative Example No. 43-52), it was found that either the color fading resistance or the outer surface quality was poor. Moreover, when not forming a clear organic processing film (comparative example No. 53-58), it turned out that discoloration resistance is unsatisfactory.
本発明の薄型ディスプレイパネルを用いる表示装置のバックカバー用意匠性亜鉛系めっき鋼板は、上述した構成よりなるので、皮膜厚みが小さくて低コスト化を実現でき、且つ薄型ディスプレイパネルを用いる表示装置のバックカバー用途性能を満足している。 The back cover prepared zinc-plated steel sheet for the display device using the thin display panel according to the present invention has the above-described configuration, and therefore, the coating thickness is small, the cost can be reduced, and the display device using the thin display panel can be realized. The back cover application performance is satisfied.
Claims (7)
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、
前記バックカバーの内面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜が形成されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the surface of the zinc-based plated steel sheet that is the outer surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 and the Co content during plating is 0.2 to 1. A Zn—Co plating film having a mass of 0% and a colored organic treatment film having a film amount of 0.5 to 5 g / m 2 are sequentially laminated.
A zinc-based plated steel sheet, characterized in that an inorganic-organic composite-based treatment film having a film amount of 0.3 to 0.7 g / m 2 is formed on the surface of the back cover side surface. .
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、
前記バックカバーの内面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜が形成されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the surface of the zinc-based plated steel sheet that is the outer surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 and the Co content during plating is 0.2 to 1. and Zn-Co plating film is 0mass%, and inorganic-organic composite system treatment film is a film weight of 0.03 to 0.3 g / m 2, colored organic coating weight of 0.5 to 5 g / m 2 The treatment film is laminated in order,
A zinc-based plated steel sheet, characterized in that an inorganic-organic composite-based treatment film having a film amount of 0.3 to 0.7 g / m 2 is formed on the surface of the back cover side surface. .
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が0.5〜5g/m2である着色有機系処理皮膜が形成され、
前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the surface that is the outer surface of the back cover of the zinc-based plated steel sheet, a colored organic treatment film having a film amount of 0.5 to 5 g / m 2 is formed,
On the surface of the side that is the inner surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 , and the Co content during plating is 0.2 to 1.0 mass%. A zinc-plated steel sheet, wherein a Co-plated film and an inorganic-organic composite-based film having a film amount of 0.03 to 0.3 g / m 2 are sequentially laminated.
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が0.3〜0.7g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、
前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the zinc-based plated steel sheet on the side that is the outer surface of the back cover, an inorganic-organic composite-based treatment film having a film amount of 0.3 to 0.7 g / m 2 and a film amount of 0.5 And a colored organic treatment film of ˜5 g / m 2 are laminated in order,
On the surface of the side that is the inner surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 , and the Co content during plating is 0.2 to 1.0 mass%. A zinc-plated steel sheet, wherein a Co-plated film and an inorganic-organic composite-based film having a film amount of 0.03 to 0.3 g / m 2 are sequentially laminated.
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、
前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the surface of the zinc-based plated steel sheet that is the outer surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 and the Co content during plating is 0.2 to 1. A Zn—Co plating film having a mass of 0% and a colored organic treatment film having a film amount of 0.5 to 5 g / m 2 are sequentially laminated.
On the surface of the side that is the inner surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 , and the Co content during plating is 0.2 to 1.0 mass%. A zinc-plated steel sheet, wherein a Co-plated film and an inorganic-organic composite-based film having a film amount of 0.03 to 0.3 g / m 2 are sequentially laminated.
前記亜鉛系めっき鋼板の前記バックカバーの外面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、皮膜量が0.5〜5g/m2である着色有機系処理皮膜と、が順に積層され、
前記バックカバーの内面となる側の面の表面には、皮膜量が1.0〜5.0g/m2であり、めっき中のCo含有率が0.2〜1.0mass%であるZn−Coめっき皮膜と、皮膜量が0.03〜0.3g/m2である無機有機複合系処理皮膜と、が順に積層されることを特徴とする、亜鉛系めっき鋼板。 A zinc-based plated steel sheet for a back cover of a display device using a thin display panel,
On the surface of the surface of the zinc-based plated steel sheet that is the outer surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 and the Co content during plating is 0.2 to 1. and Zn-Co plating film is 0mass%, and inorganic-organic composite system treatment film is a film weight of 0.03 to 0.3 g / m 2, colored organic coating weight of 0.5 to 5 g / m 2 The treatment film is laminated in order,
On the surface of the side that is the inner surface of the back cover, the coating amount is 1.0 to 5.0 g / m 2 , and the Co content during plating is 0.2 to 1.0 mass%. A zinc-plated steel sheet, wherein a Co-plated film and an inorganic-organic composite-based film having a film amount of 0.03 to 0.3 g / m 2 are sequentially laminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006272049A JP5320666B2 (en) | 2006-06-22 | 2006-10-03 | Galvanized steel sheet for back cover of display device using thin display panel |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006173036 | 2006-06-22 | ||
JP2006173036 | 2006-06-22 | ||
JP2006272049A JP5320666B2 (en) | 2006-06-22 | 2006-10-03 | Galvanized steel sheet for back cover of display device using thin display panel |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008025019A true JP2008025019A (en) | 2008-02-07 |
JP5320666B2 JP5320666B2 (en) | 2013-10-23 |
Family
ID=39115968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006272049A Expired - Fee Related JP5320666B2 (en) | 2006-06-22 | 2006-10-03 | Galvanized steel sheet for back cover of display device using thin display panel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5320666B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101223817B1 (en) | 2010-12-28 | 2013-01-17 | 주식회사 포스코 | Resin Composition for Organic and Inorganic Complex Film and Surface Treated Steel Sheet |
JP2013018192A (en) * | 2011-07-11 | 2013-01-31 | Nippon Steel & Sumitomo Metal Corp | Surface-treated steel plate and casing for home electric appliance |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102553121B1 (en) * | 2021-11-02 | 2023-07-10 | 강남대학교 산학협력단 | Zinc-cobalt-molybdenum alloy plaing solution for cold rolled steeal sheets with improved corrosion resistance and plating method using the same |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07331480A (en) * | 1994-02-24 | 1995-12-19 | Pirelli Coordinamento Pneumatici Spa | Surface-treated wire used for composite element of elastomersubstance and preparation of said wire |
JPH08218193A (en) * | 1995-02-14 | 1996-08-27 | Sumitomo Metal Ind Ltd | Organic film compositely coated steel sheet |
JPH09324284A (en) * | 1996-06-06 | 1997-12-16 | Sumitomo Metal Ind Ltd | Surface treated steel sheet excellent in corrosion resistance after working |
JPH10337530A (en) * | 1997-06-09 | 1998-12-22 | Nippon Steel Corp | Organic surface-treated metal plate and organic metal surface treating liquid |
JP2000017466A (en) * | 1998-07-06 | 2000-01-18 | Nippon Steel Corp | Rust-preventive agent for treating metal surface excellent in corrosion resistance and surface treated metal product |
WO2004076173A1 (en) * | 2003-02-25 | 2004-09-10 | Nippon Steel Corporation | Reflector-use precoat metal plate |
JP2004306367A (en) * | 2003-04-04 | 2004-11-04 | Nippon Steel Corp | Surface-treated metal sheet excellent in heat-proof properties and housing using it |
WO2005105432A1 (en) * | 2004-04-28 | 2005-11-10 | Sumitomo Metal Industries, Ltd. | Coated steel sheet with excellent heat dissipation |
JP2006051686A (en) * | 2004-08-11 | 2006-02-23 | Kobe Steel Ltd | High reflection coated metal sheet |
-
2006
- 2006-10-03 JP JP2006272049A patent/JP5320666B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07331480A (en) * | 1994-02-24 | 1995-12-19 | Pirelli Coordinamento Pneumatici Spa | Surface-treated wire used for composite element of elastomersubstance and preparation of said wire |
JPH08218193A (en) * | 1995-02-14 | 1996-08-27 | Sumitomo Metal Ind Ltd | Organic film compositely coated steel sheet |
JPH09324284A (en) * | 1996-06-06 | 1997-12-16 | Sumitomo Metal Ind Ltd | Surface treated steel sheet excellent in corrosion resistance after working |
JPH10337530A (en) * | 1997-06-09 | 1998-12-22 | Nippon Steel Corp | Organic surface-treated metal plate and organic metal surface treating liquid |
JP2000017466A (en) * | 1998-07-06 | 2000-01-18 | Nippon Steel Corp | Rust-preventive agent for treating metal surface excellent in corrosion resistance and surface treated metal product |
WO2004076173A1 (en) * | 2003-02-25 | 2004-09-10 | Nippon Steel Corporation | Reflector-use precoat metal plate |
JP2004306367A (en) * | 2003-04-04 | 2004-11-04 | Nippon Steel Corp | Surface-treated metal sheet excellent in heat-proof properties and housing using it |
WO2005105432A1 (en) * | 2004-04-28 | 2005-11-10 | Sumitomo Metal Industries, Ltd. | Coated steel sheet with excellent heat dissipation |
JP2006051686A (en) * | 2004-08-11 | 2006-02-23 | Kobe Steel Ltd | High reflection coated metal sheet |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101223817B1 (en) | 2010-12-28 | 2013-01-17 | 주식회사 포스코 | Resin Composition for Organic and Inorganic Complex Film and Surface Treated Steel Sheet |
JP2013018192A (en) * | 2011-07-11 | 2013-01-31 | Nippon Steel & Sumitomo Metal Corp | Surface-treated steel plate and casing for home electric appliance |
Also Published As
Publication number | Publication date |
---|---|
JP5320666B2 (en) | 2013-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8475930B2 (en) | Composite coated metal sheet, treatment agent and method of manufacturing composite coated metal sheet | |
CN101542018B (en) | Aqueous surface treatment for environment-friendly precoated metal materials, surface-treated metal materials, and environment-friendly precoated metal materials | |
CA2803862C (en) | Method for manufacturing zinc or zinc alloy coated steel sheet and zinc or zinc alloy coated steel sheet manufactured by the method | |
JP5241075B2 (en) | Non-chromate aqueous surface treatment agent for metal material surface treatment | |
US9187829B2 (en) | Surface-treatment solution for zinc or zinc alloy coated steel sheet and method for manufacturing zinc or zinc alloy coated steel sheet | |
JP5055822B2 (en) | Painted steel sheet with excellent coating adhesion | |
JP4970773B2 (en) | Metal surface treatment agent, metal material surface treatment method and surface treatment metal material | |
JP5320666B2 (en) | Galvanized steel sheet for back cover of display device using thin display panel | |
JP5098257B2 (en) | Galvanized steel sheet for back cover of display device using thin display panel | |
US20130136947A1 (en) | Dry-in-place corrosion-resistant coating for zinc or zinc-alloy coated substrates | |
JP2007321223A (en) | CHROMATE-FREE SURFACE-TREATED Al-Zn-BASED ALLOY-PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND ITS PRODUCTION METHOD | |
JP4808585B2 (en) | Surface-treated metal material | |
JP6052521B2 (en) | Process for manufacturing corrosion-resistant metal member coating and process for manufacturing corrosion-resistant metal member | |
JP2011168855A (en) | Polyvinyl chloride coated steel sheet having excellent end face corrosion resistance | |
JP2009287049A (en) | Chromate-free surface-treated metal material having excellent finger print resistance and electromagnetic wave shieldability | |
TWI769091B (en) | Surface-treated steel sheet for organic resin coating and method for producing the same, and organic resin-coated steel sheet and method for producing the same | |
JP2008119901A (en) | Surface treated metal material excellent in adhesive properties and film adhesion properties | |
JP2007321222A (en) | Surface treated steel sheet having excellent corrosion resistance and water resistance | |
TWI597387B (en) | Fuel tank with surface treatment of steel | |
TW200521264A (en) | A Zn-plated steel sheet with an inorganic and organic composite plated layer excellent in corrosion resistance |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090216 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110823 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110830 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110930 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120424 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120522 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120828 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120912 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130618 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130701 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 5320666 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |