JPH04330683A - Aluminum sheet material for floppy disk drive case - Google Patents
Aluminum sheet material for floppy disk drive caseInfo
- Publication number
- JPH04330683A JPH04330683A JP41627890A JP41627890A JPH04330683A JP H04330683 A JPH04330683 A JP H04330683A JP 41627890 A JP41627890 A JP 41627890A JP 41627890 A JP41627890 A JP 41627890A JP H04330683 A JPH04330683 A JP H04330683A
- Authority
- JP
- Japan
- Prior art keywords
- floppy disk
- disk drive
- sheet material
- aluminum
- drive case
- 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
- 239000000463 material Substances 0.000 title claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 7
- 239000004593 Epoxy Substances 0.000 claims abstract description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- HFBMWMNUJJDEQZ-UHFFFAOYSA-N acryloyl chloride Chemical compound ClC(=O)C=C HFBMWMNUJJDEQZ-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004166 Lanolin Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012177 spermaceti Substances 0.000 description 1
- 229940084106 spermaceti Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明はフロッピーディスクドラ
イブケース用アルミニウム板材に関し、更に詳しくは、
表面の潤滑性が優れ、成形後の外観が良く、軽量で、し
かも電磁波シールド特性に優れたフロッピーディスクド
ライブケース用アルミニウム板材に関する。[Field of Industrial Application] The present invention relates to an aluminum plate material for a floppy disk drive case, and more specifically,
This invention relates to an aluminum plate material for a floppy disk drive case that has excellent surface lubricity, looks good after molding, is lightweight, and has excellent electromagnetic shielding properties.
【０００２】0002
【従来の技術及び解決しようとする課題】パソコン或い
はワープロのメモリーにはフロッピーティスクが用いら
れるが、フロッピーディスクドライブは、ＣＲＴに近く
設置されるため、ＣＲＴから発生する電磁波ノイズがフ
ロッピーディスクに影響を及ぼして、メモリーに支障が
出る場合がある。このため、従来は鉄製のフロッピーデ
ィスクドライブケースが用いられることが多かった。[Prior Art and Problems to be Solved] Floppy disks are used for the memory of personal computers or word processors, but since floppy disk drives are installed close to CRTs, electromagnetic noise generated from the CRTs affects the floppy disks. This may cause memory problems. For this reason, conventionally, floppy disk drive cases made of iron have often been used.
【０００３】しかし、従来の鉄製のフロッピーディスク
ドライブケースは、ＣＲＴからの電磁波のシールド特性
は良好であるものの、成形時に傷が入り易く、成形後の
取り扱い時に指紋が付き易い。更には、近年多く用いら
れるラップトップタイプのパソコンやノートワープロな
どのように持ち運びされるものには、鉄製のケースは重
量が大きく不適当である。However, although conventional iron floppy disk drive cases have good shielding properties against electromagnetic waves from CRTs, they are easily scratched during molding and are prone to fingerprints when handled after molding. Furthermore, iron cases are heavy and unsuitable for portable devices such as laptop-type personal computers and notebook word processors, which have been widely used in recent years.
【０００４】本発明は、上記従来技術の欠点を解消して
、軽量で成形性がよく、かつ電磁波のシールド特性が良
好なフロッピーディスクドライブケース用材料を提供す
ることを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to overcome the drawbacks of the prior art described above and to provide a material for a floppy disk drive case that is lightweight, has good moldability, and has good electromagnetic wave shielding properties.
【０００５】[0005]
【課題を解決するための手段】本発明者は、前記課題を
解決するため、材料としてアルミニウム板材を効果的に
使用し得る方策について鋭意研究を重ね、ここに本発明
をなしたものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present inventor has conducted extensive research into ways to effectively use aluminum plate material as a material, and has hereby accomplished the present invention.
【０００６】すなわち、本発明は、アルミニウム合金板
材の片面にエポキシ系若しくはアクリル系又は塩ビ系の
樹脂がコーティングされており、該樹脂コーティング皮
膜は、その厚さが０．１〜５μｍで、潤滑剤を０．２〜
５％含有し、摩擦係数が０．５０以下のものであること
を特徴とするフロッピーディスクドライブケース用アル
ミニウム板材を要旨とするものである。以下に本発明を
更に詳細に説明する。That is, in the present invention, one side of an aluminum alloy plate material is coated with an epoxy, acrylic, or vinyl chloride resin, and the resin coating film has a thickness of 0.1 to 5 μm and is coated with a lubricant. 0.2～
The object of the present invention is to provide an aluminum plate material for a floppy disk drive case, which contains 5% of aluminum and has a coefficient of friction of 0.50 or less. The present invention will be explained in more detail below.
【０００７】[0007]
【作用】本発明のフロッピーディスクドライブケース用
アルミニウム板材は、アルミニウム合金板材の片面に特
定の材質及び性状の樹脂コーティングを塗装したもので
ある。このような樹脂としてはエポキシ系、アクリル系
又は塩ビ系が用いられるが、その樹脂による片面コーテ
ィングはケース外面に行なわれる。これは、ケース成形
時に片面側の潤滑が重要なためである。また、取り扱い
の時の指紋も外面側に付き易いものであるので、外面側
のコーティングが有効である。しかも、内面側はアース
をとりやすくするべく外面側に片面コーティングするの
がよい。[Operation] The aluminum plate for a floppy disk drive case of the present invention is an aluminum alloy plate coated with a resin coating of a specific material and property on one side. Epoxy, acrylic, or vinyl chloride resins are used as such resins, and single-sided coating with the resin is performed on the outer surface of the case. This is because lubrication on one side is important during case molding. Furthermore, since fingerprints are likely to form on the outer surface during handling, coating the outer surface is effective. Moreover, it is preferable to coat the outer surface on one side to make it easier to ground the inner surface.
【０００８】樹脂コーティングの皮膜厚さは、０．１μ
ｍ未満では潤滑効果が不十分で傷付き易く、また取り扱
い時に指紋等の汚れが付き易い。しかし、５μｍより厚
くしてもその効果が飽和し経済的に無駄である。したが
って、皮膜厚さは０．１〜５μｍとする。[0008] The film thickness of the resin coating is 0.1μ.
If it is less than m, the lubricating effect will be insufficient and it will be easily scratched, and it will also be easy to get fingerprints and other stains during handling. However, even if it is thicker than 5 μm, the effect is saturated and it is economically wasteful. Therefore, the film thickness is set to 0.1 to 5 μm.
【０００９】また、樹脂コーティングの皮膜の摩擦係数
は０．５０以下であることが必要である。摩擦係数が０
．５０を超えると、潤滑性が不十分で成形時に傷が発生
し易い。皮膜の摩擦係数を０．５０以下とするには、ポ
リエチレン、鯨ロウ、ラノリン、フッソ化合物などの潤
滑剤を添加して調製するが、該樹脂中に０．２〜５％添
加するのが効果的である。[0009] Furthermore, it is necessary that the friction coefficient of the resin coating film be 0.50 or less. Friction coefficient is 0
．． If it exceeds 50, the lubricity is insufficient and scratches are likely to occur during molding. In order to reduce the coefficient of friction of the film to 0.50 or less, lubricants such as polyethylene, spermaceti, lanolin, and fluorine compounds are added to the resin, and it is effective to add 0.2 to 5% to the resin. It is true.
【００１０】なお、アルミニウム合金としては、その成
分組成は特に制限されるものではないが、Ｍｇ系、Ｍｎ
系又はＭｇ−Ｍｎ系のものが望ましい。特に、１〜５ｗ
ｔ％のＭｇ、０．５〜２ｗｔ％のＭｎの少なくとも１種
を含有する成分のものが好ましい。ここで、Ｍｇが１％
未満では強度が低く、ケースがへこみ易くなるので板厚
を厚くする必要があり、重量が大きくなる。一方、Ｍｇ
が５％を超えると成形性が低下しケース加工に不適当と
なる。また、Ｍｎが０．５％未満では強度が低くケース
がへこみやすくなるので板厚を厚くする必要があり、重
量が大きくなる。一方、Ｍｎが２％を超えると粗大な金
属間化合物が生成し、加工性が低下する。[0010]Although the composition of the aluminum alloy is not particularly limited, Mg-based, Mn-based
or Mg-Mn type is preferable. Especially, 1~5w
A component containing at least one of t% Mg and 0.5 to 2 wt% Mn is preferable. Here, Mg is 1%
If it is less than that, the strength will be low and the case will be easily dented, so it will be necessary to increase the thickness of the plate, which will increase the weight. On the other hand, Mg
If it exceeds 5%, moldability decreases and it becomes unsuitable for case processing. Furthermore, if the Mn content is less than 0.5%, the strength is low and the case is likely to be dented, so it is necessary to increase the thickness of the plate, which increases the weight. On the other hand, when Mn exceeds 2%, coarse intermetallic compounds are formed and workability is reduced.
【００１１】次に本発明の実施例を示す。[0011] Next, examples of the present invention will be shown.
【表１】
に示す化学成分を有するアルミニウム合金を均熱、熱延
、焼鈍、冷間圧延して板厚０．３５ｍｍとした。この板
材の片面に表１に示す樹脂皮膜をロールコートで塗布し
た。ケース成形としては９０゜曲げを行なった。また摩
擦係数はバウデン試験機で荷重１００ｇで測定した。[Table 1] An aluminum alloy having the chemical components shown in Table 1 was soaked, hot rolled, annealed, and cold rolled to a plate thickness of 0.35 mm. A resin film shown in Table 1 was applied to one side of this plate by roll coating. The case was bent by 90 degrees. Further, the friction coefficient was measured using a Bowden tester under a load of 100 g.
【００１２】得られたケースについて変形性、傷、指紋
残り、電磁波シールド性について調べた結果を[0012] The obtained case was examined for deformability, scratches, fingerprints, and electromagnetic shielding properties.
【表２】
に示す。表２より明らかなように、本発明例はいずれも
、所要の強度を有し、電磁波のシールド特性が良好で、
成形性がよく、指紋残り等のない高品質である。軽量で
あることは云うまでもない。[Table 2] shows. As is clear from Table 2, all of the examples of the present invention have the required strength and good electromagnetic wave shielding properties.
It has good moldability and is of high quality with no fingerprints left behind. Needless to say, it is lightweight.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
軽量で、強度、成形性等々が優れ、しかも電磁波のシー
ルド特性が良好であり、高品質のフロッピーディスクド
ライブケース用材料を提供できる。[Effects of the Invention] As explained above, according to the present invention,
It is lightweight, has excellent strength, moldability, etc., and has good electromagnetic wave shielding properties, and can provide a high-quality material for floppy disk drive cases.
Claims (2)
シ系若しくはアクリル系又は塩ビ系の樹脂がコーティン
グされており、該樹脂コーティング皮膜は、その厚さが
０．１〜５μｍで、潤滑剤を０．２〜５％含有し、摩擦
係数が０．５０以下のものであることを特徴とするフロ
ッピーディスクドライブケース用アルミニウム板材。Claim 1: One side of an aluminum alloy plate material is coated with an epoxy, acrylic, or vinyl chloride resin, and the resin coating film has a thickness of 0.1 to 5 μm and is coated with a lubricant of 0.2 μm. An aluminum plate material for a floppy disk drive case, characterized in that the aluminum plate material contains ~5% and has a coefficient of friction of 0.50 or less.
Ｍｇ及び０．５〜２ｗｔ％のＭｎの少なくとも１種を含
有しているアルミニウム合金である請求項１に記載のア
ルミニウム板材。2. The aluminum plate material according to claim 1, wherein the aluminum material is an aluminum alloy containing at least one of 1 to 5 wt% Mg and 0.5 to 2 wt% Mn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416278A JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416278A JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04330683A true JPH04330683A (en) | 1992-11-18 |
| JPH0670870B2 JPH0670870B2 (en) | 1994-09-07 |
Family
ID=18524509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416278A Expired - Lifetime JPH0670870B2 (en) | 1990-12-28 | 1990-12-28 | Aluminum plate material for floppy disk drive case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0670870B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06346178A (en) * | 1993-04-14 | 1994-12-20 | Sumitomo Light Metal Ind Ltd | Aluminum alloy material for recording medium cassette shutter and its production and aluminum alloy shutter using the same |
| US6086992A (en) * | 1997-02-03 | 2000-07-11 | The Furukawa Electric Co., Ltd. | Resin-coated aluminum alloy plate material |
| KR100544470B1 (en) * | 2001-12-03 | 2006-01-24 | 주식회사 포스코 | Resin coating liquid composition excellent in electromagnetic shielding performance and a resin coated steel sheet manufacturing method using the same |
| KR100544429B1 (en) * | 2001-04-09 | 2006-01-24 | 주식회사 포스코 | Electromagnetic shielding resin coating material and low carbon resin coating steel plate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554364A (en) * | 1978-10-17 | 1980-04-21 | Toyo Alum Kk | Aqueous resin-wax composition for forming and corrosion-protection of aluminum fin material |
| JPS6094466A (en) * | 1983-10-28 | 1985-05-27 | Nippon Steel Corp | Coating material composition for precoated steel plate |
| JPS60131715A (en) * | 1983-12-20 | 1985-07-13 | 住友ベークライト株式会社 | Method of producing molded article for electromagnetic shield |
| JPS6182992A (en) * | 1984-09-28 | 1986-04-26 | Furukawa Alum Co Ltd | Al alloy brazing sheet |
| JPS61110547A (en) * | 1984-11-05 | 1986-05-28 | 日立電線株式会社 | Electromagnetic wave shielding material |
| JPH01122432A (en) * | 1987-11-06 | 1989-05-15 | Sky Alum Co Ltd | Highly-slidable precoated metal sheet |
| JPH01208697A (en) * | 1988-02-15 | 1989-08-22 | Kobe Steel Ltd | Surface treated aluminum thin sheet for plate fin of heat exchanger |
| JPH0215834A (en) * | 1988-06-30 | 1990-01-19 | Hiroshi Ueno | Manufacturing method for drawn containers |
| JPH0226363A (en) * | 1988-07-12 | 1990-01-29 | Aisin Aw Co Ltd | Hydraulic controller for automatic transmission |
| JPH0243040A (en) * | 1988-05-31 | 1990-02-13 | Kawasaki Steel Corp | Lubricating resin treated steel plate excellent in corrosion resistance |
-
1990
- 1990-12-28 JP JP2416278A patent/JPH0670870B2/en not_active Expired - Lifetime
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5554364A (en) * | 1978-10-17 | 1980-04-21 | Toyo Alum Kk | Aqueous resin-wax composition for forming and corrosion-protection of aluminum fin material |
| JPS6094466A (en) * | 1983-10-28 | 1985-05-27 | Nippon Steel Corp | Coating material composition for precoated steel plate |
| JPS60131715A (en) * | 1983-12-20 | 1985-07-13 | 住友ベークライト株式会社 | Method of producing molded article for electromagnetic shield |
| JPS6182992A (en) * | 1984-09-28 | 1986-04-26 | Furukawa Alum Co Ltd | Al alloy brazing sheet |
| JPS61110547A (en) * | 1984-11-05 | 1986-05-28 | 日立電線株式会社 | Electromagnetic wave shielding material |
| JPH01122432A (en) * | 1987-11-06 | 1989-05-15 | Sky Alum Co Ltd | Highly-slidable precoated metal sheet |
| JPH01208697A (en) * | 1988-02-15 | 1989-08-22 | Kobe Steel Ltd | Surface treated aluminum thin sheet for plate fin of heat exchanger |
| JPH0243040A (en) * | 1988-05-31 | 1990-02-13 | Kawasaki Steel Corp | Lubricating resin treated steel plate excellent in corrosion resistance |
| JPH0215834A (en) * | 1988-06-30 | 1990-01-19 | Hiroshi Ueno | Manufacturing method for drawn containers |
| JPH0226363A (en) * | 1988-07-12 | 1990-01-29 | Aisin Aw Co Ltd | Hydraulic controller for automatic transmission |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06346178A (en) * | 1993-04-14 | 1994-12-20 | Sumitomo Light Metal Ind Ltd | Aluminum alloy material for recording medium cassette shutter and its production and aluminum alloy shutter using the same |
| US6086992A (en) * | 1997-02-03 | 2000-07-11 | The Furukawa Electric Co., Ltd. | Resin-coated aluminum alloy plate material |
| KR100544429B1 (en) * | 2001-04-09 | 2006-01-24 | 주식회사 포스코 | Electromagnetic shielding resin coating material and low carbon resin coating steel plate |
| KR100544470B1 (en) * | 2001-12-03 | 2006-01-24 | 주식회사 포스코 | Resin coating liquid composition excellent in electromagnetic shielding performance and a resin coated steel sheet manufacturing method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0670870B2 (en) | 1994-09-07 |
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