JPH07314601A - Conductive precoat metal panel - Google Patents
Conductive precoat metal panelInfo
- Publication number
- JPH07314601A JPH07314601A JP13243994A JP13243994A JPH07314601A JP H07314601 A JPH07314601 A JP H07314601A JP 13243994 A JP13243994 A JP 13243994A JP 13243994 A JP13243994 A JP 13243994A JP H07314601 A JPH07314601 A JP H07314601A
- Authority
- JP
- Japan
- Prior art keywords
- conductive
- panel
- weight
- thickness
- plate
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ビデオデッキやオーデ
ィオ機器の外板などのアース性を必要とする家電製品に
使用される導電性プレコート金属板に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive pre-coated metal plate used for home electric appliances such as a VCR or an outer plate of an audio device which requires a grounding property.
【０００２】[0002]
【従来の技術】従来、金属板は、住宅、店舗などの建
材、自動車や、オーディオ、ビデオデッキ、洗濯機、冷
蔵庫などの家電製品として広く利用されている。そし
て、オーディオ機器やビデオデッキのケースでは、アー
ス性を必要とするために、その裏面に導電性が要求され
る。2. Description of the Related Art Heretofore, metal plates have been widely used as building materials for houses and stores, automobiles, and home electric appliances such as audio, video decks, washing machines, and refrigerators. In the case of an audio device or a video deck, grounding is required, so that the back surface of the case is required to be conductive.
【０００３】金属板を加工してから塗装を行ういわゆる
ポストコートでは、裏面は無塗装のままにしておき、金
属素地むき出しとしていた。そのため、充分なアース性
を得ることができた。In so-called post-coating in which a metal plate is processed and then painted, the back surface is left unpainted to expose the metal base. Therefore, sufficient earthing property could be obtained.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、プレコ
ート金属板の採用が進む昨今では、裏面を金属むき出し
にしておくと、プレコート金属板製造メーカーで梱包し
たコイルや切り板状態では、塗装面に過大な荷重が掛り
すぎるために、塗装面の美麗かつ平滑な外観が失われた
り、裏面の金属表面の粗度が塗装面に転写されるプレッ
シャーマークという不具合が生じた。そのため、通常
は、塗装面に厚さ４０〜１００μｍのポリエチレン等の
ガードフィルムを貼って保管するという手間とコストを
かけていた。また、裏面に通常の塗装を施すと、塗膜は
絶縁物であるために導電性がなく、アース性が全くとれ
ないという欠点があった。また、特開平４−８９２４０
号公報には、塗膜に導電性を付与する技術が示されてい
るが、これでは充分な導電性は得られなかった。However, with the recent increase in the use of pre-coated metal sheets, if the back surface is exposed, the coated surface will be too large when the pre-coated metal sheet manufacturer packs the coil or cut sheet. Due to the excessive load, the beautiful and smooth appearance of the painted surface was lost, and the roughness of the metal surface on the back surface was transferred to the painted surface as a pressure mark. Therefore, it usually takes time and cost to attach and store a guard film such as polyethylene having a thickness of 40 to 100 μm on the coated surface. Further, when the back surface is subjected to usual coating, there is a drawback that the coating film is an insulator, so that it has no electrical conductivity and cannot have groundability at all. In addition, JP-A-4-89240
Japanese Patent Laid-Open Publication No. 9-242242 discloses a technique for imparting conductivity to a coating film, but this technique did not provide sufficient conductivity.
【０００５】本発明は、耐プレッシャーマーク性に優れ
た導電性プレコート金属板の提供を目的とする。It is an object of the present invention to provide a conductive precoated metal plate having excellent resistance to pressure marks.
【０００６】[0006]
【課題を解決するための手段】本発明は、表面処理皮膜
を形成した金属板上に、導電性を有する金属を含有する
塗膜を厚さ０．５〜１５μｍ形成させたことを特徴とす
る導電性プレコート金属板である。導電性を有する金属
として、厚さ１．０μｍ以下、長径最大１００μ、平均
１５μｍの燐片状ニッケルを樹脂１００重量部に対して
１１〜２００重量部含有すること、またはさらに最大４
４μｍ、平均２．５μｍの鎖状ニッケルを樹脂１００重
量部に対して０〜１０重量部含有することは好ましい。
また、硬化塗膜のガラス転移点は１０〜３５℃であるこ
とが好ましく、金属板としては亜鉛めっき鋼板、亜鉛系
合金めっき鋼板、アルミめっき鋼板、クロムめっき鋼
板、ステンレス鋼板、アルミニウム板、または銅板を使
用するのが好ましい。The present invention is characterized in that a coating film containing a conductive metal is formed to a thickness of 0.5 to 15 μm on a metal plate having a surface-treated coating formed thereon. It is a conductive pre-coated metal plate. As a metal having electroconductivity, 11 to 200 parts by weight of scaly nickel having a thickness of 1.0 μm or less, a major axis maximum of 100 μm, and an average of 15 μm is contained with respect to 100 parts by weight of the resin, or further 4 at most.
It is preferable that 0 to 10 parts by weight of chain nickel having a thickness of 4 μm and an average of 2.5 μm is contained with respect to 100 parts by weight of the resin.
The glass transition point of the cured coating film is preferably 10 to 35 ° C., and the metal plate is a galvanized steel plate, a zinc alloy plated steel plate, an aluminized steel plate, a chrome plated steel plate, a stainless steel plate, an aluminum plate, or a copper plate. Is preferably used.
【０００７】[0007]
【作用】本発明のプレコート金属板に用いる表面処理皮
膜金属板に特に制限はないが、厚さ０．３〜２．３ｍｍ
の亜鉛めっき鋼板、亜鉛系合金めっき鋼板、アルミめっ
き鋼板、クロムめっき鋼板、ステンレス鋼板、アルミニ
ウム板、または銅板を用いることができる。また、下地
処理は施さなくてもよいが、下地処理を施す場合は、例
えば、クロメートをＣｒ換算で３０〜８０ｍｇ／ｍ2 付
着させるのが好ましい。クロム量で３０ｍｇ／ｍ2 より
少ないと密着性が悪くなり、８０ｍｇ／ｍ2 を越えると
加工性が悪くなる。The surface-treated metal sheet used for the precoated metal sheet of the present invention is not particularly limited, but has a thickness of 0.3 to 2.3 mm.
The galvanized steel sheet, the zinc alloy plated steel sheet, the aluminized steel sheet, the chrome plated steel sheet, the stainless steel sheet, the aluminum plate, or the copper plate can be used. Further, although the base treatment may not be applied, when the base treatment is applied, for example, it is preferable to deposit chromate in an amount of 30 to 80 mg / m 2 in terms of Cr. If the amount of chromium is less than 30 mg / m 2 , the adhesion will be poor, and if it exceeds 80 mg / m 2 , the workability will be poor.
【０００８】表面処理皮膜の上に塗膜を形成する塗料樹
脂としては、エポキシ系塗料樹脂、高分子ポリエステル
塗料樹脂、エポキシ変成ポリエステル塗料樹脂、アクリ
ル塗料樹脂、ウレタン塗料樹脂などが使用できるが、硬
化塗膜のガラス転移温度Ｔｇが１０〜３５℃のものが望
ましい。Ｔｇが１０℃より低いと、塗膜が軟らかすぎて
プレッシャーマークがつきやすくなり、また、３５℃よ
り高いと、おもて面の塗膜へのプレッシャーマークがつ
きやすくなる。As the paint resin for forming the coating film on the surface-treated film, epoxy-based paint resin, high-molecular polyester paint resin, epoxy-modified polyester paint resin, acrylic paint resin, urethane paint resin, etc. can be used. The glass transition temperature Tg of the coating film is preferably 10 to 35 ° C. When Tg is lower than 10 ° C, the coating film is too soft and pressure marks are easily formed, and when Tg is higher than 35 ° C, pressure marks are easily formed on the coating film on the front surface.
【０００９】塗膜中に含有させる導電性を有する金属と
しては、銅、亜鉛、ニッケル、ステンレス等いずれも使
用できるが、特にニッケルは、厚さ１．０μｍ以下、長
径最大１００μ、平均１５μｍの燐片状ニッケルを樹脂
１００重量部に対して１１〜２００重量部含有すること
が望ましい。１１重量部より少ないと導電性が不十分で
あり、２００重量部を超えると導電性は充分得られる
が、塗膜として形成できなくなる。また、ニッケルの厚
さが１．０μｍを超えるものや長径が最大１００μｍを
超えるものは、塗料中に分散しにくい。平均で１５μｍ
のものがもっとも塗料分散性が良好である。塗料分散性
がよいと塗装しやすくなり、塗膜中のニッケル量を制御
しやすくなる。たとえば、（株）高純度化学研究所製の
ニッケル粉末コードナンバーＮＩ１１０１０４相当品を
使用するとよい。As the conductive metal to be contained in the coating film, any of copper, zinc, nickel, stainless steel and the like can be used. Especially, nickel has a thickness of 1.0 μm or less, a major axis maximum of 100 μm, and an average of 15 μm. It is desirable that the flake nickel is contained in an amount of 11 to 200 parts by weight based on 100 parts by weight of the resin. If it is less than 11 parts by weight, the conductivity is insufficient, and if it exceeds 200 parts by weight, sufficient conductivity is obtained, but it cannot be formed as a coating film. Further, nickel having a thickness of more than 1.0 μm and a major axis having a maximum length of more than 100 μm is difficult to disperse in the paint. 15 μm on average
The one with the best paint dispersibility. Good paint dispersibility facilitates coating and facilitates control of the amount of nickel in the coating film. For example, nickel powder code number NI110104 equivalent product manufactured by Kojundo Chemical Laboratory Co., Ltd. may be used.
【００１０】これに加えて、最大４４μｍ、平均２．５
μｍの鎖状ニッケルを樹脂１００重量部に対して０〜１
０重量部含有すると導電性がさらに良くなる。最大が４
４μｍを超えると塗料中に分散しにくくなり、平均で
２．５μｍのものがもっとも塗料分散性が良好である。
また、１０重量部を超えると、塗料中に分散しにくくな
る。たとえば、（株）高純度化学研究所製のニッケル粉
末コードナンバーＮＩ１１０１０１相当品を使用すると
よい。In addition to this, a maximum of 44 μm and an average of 2.5
Chain nickel of μm is 0 to 1 with respect to 100 parts by weight of resin.
If the content is 0 part by weight, the conductivity will be further improved. Up to 4
When it exceeds 4 μm, it becomes difficult to disperse in the paint, and when it is 2.5 μm on average, the paint dispersibility is the best.
Further, when it exceeds 10 parts by weight, it becomes difficult to disperse in the paint. For example, nickel powder code number NI110101 equivalent product manufactured by Kojundo Chemical Laboratory Co., Ltd. may be used.
【００１１】導電性を有する金属を含有する塗膜の厚み
は０．５〜１５μｍとする。０．５μｍより小さいと、
硬い金属素地の影響が出てブロッキング性が悪くなり、
１５μｍを越えると、導電性が悪くなる。The thickness of the coating film containing a conductive metal is 0.5 to 15 μm. If it is smaller than 0.5 μm,
The effect of the hard metal base comes out and the blocking property deteriorates,
If it exceeds 15 μm, the conductivity becomes poor.
【００１２】なお、上記塗料の製造方法および塗膜の形
成方法については特に限定されるものはなく、常法によ
ることができる。The method for producing the coating material and the method for forming the coating film are not particularly limited, and can be a conventional method.
【００１３】[0013]
【実施例】本発明を実施例に基づきさらに詳細に説明す
る。EXAMPLES The present invention will be described in more detail based on examples.
【００１４】金属板として、板厚０．６ｍｍの電気亜鉛
めっき鋼板（亜鉛付着量２０ｇ／ｍ2 ）に下地処理とし
てクロメート処理をＣｒ付着量で５０ｍｇ／ｍ2 施した
ものを用いた。表１に示す樹脂の種類、樹脂のガラス転
移温度Ｔｇ、ニッケルの形状と配合量、塗膜厚のプレコ
ート金属板Ｎｏ．１〜３６を作製した。なお、ニッケル
Ａは、厚さ１．０μｍ以下、長径最大１００μ、平均１
５μｍの燐片状ニッケル、ニッケルＢは、厚さ１．０μ
ｍ以下、最大４４μｍ、平均２．５μｍの鎖状ニッケル
である。また、おもて面のプレコート塗膜の塗装系は、
下塗り塗料として高分子ポリエステル系塗料を用いて塗
膜として４〜７μｍ形成させ、さらにその上に、上塗り
塗料として、高分子ポリエステル系塗料を用いて１４〜
２２μｍの塗膜を形成させた。As the metal plate, an electrogalvanized steel plate having a plate thickness of 0.6 mm (zinc adhesion amount 20 g / m 2 ) was subjected to a chromate treatment as a base treatment at a Cr adhesion amount of 50 mg / m 2 was used. Precoat metal plate No. No. of the resin type, the glass transition temperature Tg of the resin, the shape and blending amount of nickel, and the coating film thickness shown in Table 1. 1-36 were produced. Nickel A has a thickness of 1.0 μm or less, a maximum major axis of 100 μ, and an average of 1
5 μm of scaly nickel and nickel B have a thickness of 1.0 μm.
The chain-like nickel is m or less, a maximum of 44 μm, and an average of 2.5 μm. In addition, the coating system of the precoat coating film on the front surface is
A high-molecular polyester-based paint is used as the undercoat paint to form a coating film having a thickness of 4 to 7 μm.
A 22 μm coating film was formed.
【００１５】[0015]
【表１】 [Table 1]
【００１６】作製したプレコート金属板について塗膜の
導電性および耐プレッシャーマーク性を試験した。性能
評価方法は以下の通りである。The electroconductivity and pressure mark resistance of the coating film were tested on the prepared precoated metal sheet. The performance evaluation method is as follows.
【００１７】（１）耐プレッシャーマーク性 導電性金属を有する塗膜面と通常の塗膜面を併せて重
ね、温度４０℃一定に保ちながら、２４時間４０ｋｇ／
ｃｍ2 の圧力をかけたのち、通常の塗膜面の光沢の変化
および目視により外観変化を判定した。 ○：外観変化無し、光沢の保持率１００±５％、 ×：外観変化有り、光沢の保持率 ９５％未満または１
０５％超 である。(1) Pressure Mark Resistance The coated surface having a conductive metal and the ordinary coated surface are overlapped together, and the temperature is kept constant at 40 ° C. for 40 hours / 40 kg /
After applying a pressure of cm 2 , the change in the gloss of the usual coating film surface and the change in the appearance were judged visually. ◯: No change in appearance, gloss retention rate 100 ± 5%, ×: Change in appearance, gloss retention rate less than 95% or 1
It is over 05%.
【００１８】（２）導電性 まず、一辺１０ｍｍの銅でできた立方体２個を５ｃｍは
なして平らな机の上に置いた。机の上にはゴムマット等
絶縁物を敷いた。導電性金属を有する塗膜面を下になる
ように、すなわち立方体に接触するようにのせ、さらに
そのうえから１ｋｇのおもりをのせた。そののち、テス
ターにより２個の立方体間の抵抗値を測定した。 ◎：１オーム以下、 ○：１オームを超え、５オーム未満、 ×：５オーム以上 である。(2) Conductivity First, two cubes made of copper and having a side of 10 mm were placed on a flat desk with a length of 5 cm. An insulating material such as a rubber mat was laid on the desk. The surface of the coating film having the conductive metal was placed face down, that is, in contact with the cube, and a weight of 1 kg was further placed thereon. After that, the resistance value between the two cubes was measured by a tester. ⊚: 1 ohm or less, ◯: more than 1 ohm, less than 5 ohm, x: 5 ohm or more.
【００１９】上記性能評価結果も表１に示す。表１から
明らかなように、プレコート金属板Ｎｏ．２９〜３６
は、各要求性能のいずれかが不良もしくは不十分である
のに対し、本発明のプレコート金属板Ｎｏ．１〜２８
は、すべての要求性能を満足した。Table 1 also shows the performance evaluation results. As is clear from Table 1, the precoated metal plate No. 29-36
Indicates that any of the required performances is defective or insufficient, whereas the precoated metal plate No. 1-28
Satisfied all the required performances.
【００２０】[0020]
【発明の効果】本発明の導電性プレコート金属板は、耐
プレッシャーマーク性、導電性に優れており、アース性
の要求されるオーディオ機器やビデオデッキのケースに
使用できる。The conductive precoated metal plate of the present invention has excellent resistance to pressure marks and conductivity, and can be used for audio equipment and video deck cases where earthing is required.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０５Ｄ 7/14 Ｃ Ｄ １０１ Ａ 7/24 ３０３ Ｂ 7717−4Ｄ Ｊ 7717−4Ｄ Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display location B05D 7/14 CD 101 A 7/24 303 B 7717-4D J 7717-4D
Claims (5)
電性を有する金属を含有する塗膜を厚さ０．５〜１５μ
ｍ形成させたことを特徴とする導電性プレコート金属
板。1. A coating film containing a conductive metal having a thickness of 0.5 to 15 μm is formed on a metal plate having a surface-treated coating formed thereon.
A conductive pre-coated metal plate formed by m.
μｍ以下、長径最大１００μ、平均１５μｍの燐片状ニ
ッケルを樹脂１００重量部に対して１１〜２００重量部
含有することを特徴とする請求項１記載の導電性プレコ
ート金属板。2. The conductive metal has a thickness of 1.0.
The conductive pre-coated metal sheet according to claim 1, which contains 11 to 200 parts by weight of scaly nickel having a maximum diameter of 100 μm or less and a maximum diameter of 100 μm and an average of 15 μm with respect to 100 parts by weight of the resin.
μｍ以下、長径最大１００μ、平均１５μｍの燐片状ニ
ッケルを樹脂１００重量部に対して１１〜２００重量
部、さらに最大４４μｍ、平均２．５μｍの鎖状ニッケ
ルを樹脂１００重量部に対して０〜１０重量部含有する
ことを特徴とする請求項１記載の導電性プレコート金属
板。3. The conductive metal has a thickness of 1.0.
11 to 200 parts by weight of scaly nickel having a maximum diameter of 100 μm and an average length of 100 μm and an average of 15 μm per 100 parts by weight of resin, and chain nickel having a maximum of 44 μm and an average of 2.5 μm is 0 to 100 parts by weight of resin. The conductive precoated metal sheet according to claim 1, wherein the conductive precoated metal sheet contains 10 parts by weight.
であることを特徴とする請求項１、２、または３記載の
導電性プレコート金属板。4. The glass transition point of the cured coating film is 10 to 35 ° C.
The conductive precoated metal plate according to claim 1, 2, or 3, characterized in that.
っき鋼板、アルミめっき鋼板、クロムめっき鋼板、ステ
ンレス鋼板、アルミニウム板、または銅板であることを
特徴とする請求項１、２、３、または４記載の導電性プ
レコート金属板。5. The metal plate is a zinc-plated steel plate, a zinc-based alloy-plated steel plate, an aluminum-plated steel plate, a chrome-plated steel plate, a stainless steel plate, an aluminum plate, or a copper plate. 4. The conductive precoated metal plate according to item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13243994A JP3245696B2 (en) | 1994-05-24 | 1994-05-24 | Conductive pre-coated metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13243994A JP3245696B2 (en) | 1994-05-24 | 1994-05-24 | Conductive pre-coated metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07314601A true JPH07314601A (en) | 1995-12-05 |
| JP3245696B2 JP3245696B2 (en) | 2002-01-15 |
Family
ID=15081398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13243994A Expired - Fee Related JP3245696B2 (en) | 1994-05-24 | 1994-05-24 | Conductive pre-coated metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3245696B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003095195A1 (en) * | 2002-05-14 | 2003-11-20 | Nippon Steel Corporation | Coated metal material capable of being welded which is excellent in corrosion resistance of worked zone |
| US6849302B2 (en) | 1999-10-26 | 2005-02-01 | The Furukawa Electric Co., Ltd. | Resin-coated metal sheet for parts of electronic machinery and tools and production method thereof |
| JP2006248012A (en) * | 2005-03-10 | 2006-09-21 | Nisshin Steel Co Ltd | Coated metal sheet for thermal transfer and printed coated metal sheet using it |
| JP2008173627A (en) * | 2006-12-19 | 2008-07-31 | Nippon Steel & Sumikin Stainless Steel Corp | Conductive clear-coated stainless steel sheet |
| JP2008238406A (en) * | 2007-03-23 | 2008-10-09 | Kobe Steel Ltd | Conductive resin coated metal plate |
| KR101007462B1 (en) * | 2007-03-23 | 2011-01-12 | 가부시키가이샤 고베 세이코쇼 | Electrically conductive resin painted metal sheet |
| WO2011078497A3 (en) * | 2009-12-23 | 2011-09-29 | 주식회사 포스코 | Resin composition for pre-coated steel sheet having excellent welding properties, workability and corrosion resistance, and a production method for pre-coated steel sheet and steel sheet using the same |
| CN102744931A (en) * | 2011-04-18 | 2012-10-24 | 株式会社神户制钢所 | Pre-coated aluminium plate for electric device |
| JP2013212607A (en) * | 2012-03-30 | 2013-10-17 | Kobe Steel Ltd | Resin-coated metal sheet excellent in electromagnetic shielding property and conductivity |
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1994
- 1994-05-24 JP JP13243994A patent/JP3245696B2/en not_active Expired - Fee Related
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| US6849302B2 (en) | 1999-10-26 | 2005-02-01 | The Furukawa Electric Co., Ltd. | Resin-coated metal sheet for parts of electronic machinery and tools and production method thereof |
| WO2003095195A1 (en) * | 2002-05-14 | 2003-11-20 | Nippon Steel Corporation | Coated metal material capable of being welded which is excellent in corrosion resistance of worked zone |
| US7390564B2 (en) | 2002-05-14 | 2008-06-24 | Nippon Steel Corporation | Coated metal material capable of being welded which is excellent in corrosion resistance of worked zone |
| JP2006248012A (en) * | 2005-03-10 | 2006-09-21 | Nisshin Steel Co Ltd | Coated metal sheet for thermal transfer and printed coated metal sheet using it |
| JP2008173627A (en) * | 2006-12-19 | 2008-07-31 | Nippon Steel & Sumikin Stainless Steel Corp | Conductive clear-coated stainless steel sheet |
| JP2008238406A (en) * | 2007-03-23 | 2008-10-09 | Kobe Steel Ltd | Conductive resin coated metal plate |
| KR101007462B1 (en) * | 2007-03-23 | 2011-01-12 | 가부시키가이샤 고베 세이코쇼 | Electrically conductive resin painted metal sheet |
| TWI424921B (en) * | 2007-03-23 | 2014-02-01 | Kobe Steel Ltd | Conductive resin coated metal plate |
| WO2011078497A3 (en) * | 2009-12-23 | 2011-09-29 | 주식회사 포스코 | Resin composition for pre-coated steel sheet having excellent welding properties, workability and corrosion resistance, and a production method for pre-coated steel sheet and steel sheet using the same |
| CN102744931A (en) * | 2011-04-18 | 2012-10-24 | 株式会社神户制钢所 | Pre-coated aluminium plate for electric device |
| CN102744931B (en) * | 2011-04-18 | 2015-04-15 | 株式会社神户制钢所 | Pre-coated aluminium plate for electric device |
| JP2013212607A (en) * | 2012-03-30 | 2013-10-17 | Kobe Steel Ltd | Resin-coated metal sheet excellent in electromagnetic shielding property and conductivity |
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|---|---|
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