JPS6144499A - Synthetic resin housing having electromagnetic wave shielding property - Google Patents

Synthetic resin housing having electromagnetic wave shielding property

Info

Publication number
JPS6144499A
JPS6144499A JP16700784A JP16700784A JPS6144499A JP S6144499 A JPS6144499 A JP S6144499A JP 16700784 A JP16700784 A JP 16700784A JP 16700784 A JP16700784 A JP 16700784A JP S6144499 A JPS6144499 A JP S6144499A
Authority
JP
Japan
Prior art keywords
synthetic resin
electromagnetic wave
metal
layer
wave shielding
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.)
Pending
Application number
JP16700784A
Other languages
Japanese (ja)
Inventor
直喜 笛井
崇 阿部
岡野 滋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP16700784A priority Critical patent/JPS6144499A/en
Publication of JPS6144499A publication Critical patent/JPS6144499A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は電磁波遮蔽性を有する合成樹脂筺体°に関する
もので、産業用、事務用、家庭用電子機器を収容する筐
体として、電子機器から発生する電磁波の漏洩防止およ
び他の機器から発生した電磁波による障害な防止するた
めに有用である。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a synthetic resin casing having electromagnetic wave shielding properties, and is used as a casing for accommodating industrial, office, and household electronic equipment. It is useful for preventing leakage of electromagnetic waves generated and interference caused by electromagnetic waves generated from other devices.

(従来の技術) 現在、!子機器用筐体の大部分は軽量、耐久性。(Conventional technology) the current,! Most child device casings are lightweight and durable.

デザインの自由度および経済性の観点から合1iZ樹脂
製成形品が用いられている。
Molded products made of 1iZ resin are used from the viewpoint of design freedom and economy.

しかしながら1合成樹脂は電気絶縁性のために。However, 1 synthetic resin is used for its electrical insulation properties.

電磁波がそのまま透過してをま5ため1機器内で発生し
た電磁波が漏洩して周辺機器に悪影響を及ぼしたり、ま
た、外部からの妨害波くより機器自身が誤動作するとい
った電磁波障害の問題が深刻化してきた。
Electromagnetic interference problems are serious, such as electromagnetic waves generated within one device leaking out and having a negative impact on peripheral devices, or causing the device itself to malfunction due to interference from the outside. It has become

従来、金属製の板や網で遮蔽することが行なわれている
が、これらは硬いため加工性が悪く、さらに比重が大き
いため運搬には不便であり、持ち運びを重視する移動体
への利用は困難である。
Conventionally, shielding has been done with metal plates or nets, but these are hard and difficult to work with, and their high specific gravity makes them inconvenient to transport. Have difficulty.

また、さび易く、耐用年数が短かくなる欠点もある。It also has the disadvantage of being susceptible to rust and shortening its useful life.

合成樹脂筺体に直接、導電性を付与して電磁波/−ルド
を行なう手段として金属溶射法や4を性塗料による塗装
が行なわれている。金属溶射法は合成樹脂筺体の遮蔽法
として古くから行なわれており、優れた遮蔽効果をもっ
ている。しかし、この方法では合成樹脂と付与されろ金
属被膜との密着性が問題となる。金属被膜が簡単に剥離
したり。
As a means of directly imparting electrical conductivity to the synthetic resin housing and shielding it from electromagnetic waves, metal spraying and painting with a 4-containing paint are used. Metal spraying has been used for a long time as a shielding method for synthetic resin casings, and has an excellent shielding effect. However, this method poses a problem in the adhesion between the synthetic resin and the applied metal coating. The metal coating may peel off easily.

クランクが生じたのでは遮蔽効果の低下をきたす。If a crank occurs, the shielding effect will be reduced.

さらに金属溶射法の場合、金属蒸気の人体への悪影響や
騒音などの欠点を有している。導電性塗料による塗装法
の場合、膜厚を均一に塗装することは難しく、塗膜を厚
くすれば遮蔽効果は増すが。
Furthermore, the metal spraying method has drawbacks such as the adverse effects of metal vapor on the human body and noise. In the case of coating methods using conductive paint, it is difficult to apply a film with a uniform thickness, and the shielding effect increases if the paint film is made thicker.

塗膜にクラックが生じたり剥落する危険がある。There is a risk of the paint film cracking or peeling off.

さらに金属箔を貼付する方法もあり、環境問題はなく、
接着剤を選べば剥離の危険もなく、厚みも均一である。
There is also a method of pasting metal foil, which poses no environmental problems.
If you choose an adhesive, there is no risk of peeling and the thickness will be uniform.

しかし、生産性が低く、複雑な形状の箇所に貼付するこ
とが難しい欠点がある。
However, it has the disadvantage that productivity is low and it is difficult to apply it to areas with complex shapes.

これらの遮蔽効果付与手段は合成樹脂筐体の成形後の二
次工程で行なわなければならない。二次工程が必要 に
なるということは合成樹脂筺体゛の採用による低コスト
化にとって大きな障害となる。
These means for imparting a shielding effect must be carried out in a secondary process after molding the synthetic resin casing. The need for a secondary process is a major obstacle to reducing costs by using synthetic resin housings.

(発明が解決しようとする問題点) 以上が従来技術の概要であるが、本考案はこれら従来技
術の欠点を解消することを目的とするもので、密着性、
耐衝撃性に優れ、かつ高い電磁波遮蔽効果を有し、さら
に一体成形可能としたものである。
(Problems to be Solved by the Invention) The above is an overview of the prior art, and the present invention aims to eliminate these drawbacks of the prior art.
It has excellent impact resistance, has a high electromagnetic wave shielding effect, and can be integrally molded.

(問題点を解決するための手段) 以下に本発明の電磁波遮蔽特性を有する合成樹脂筐体に
ついて図面の実施例を用いて説明する。
(Means for Solving the Problems) The synthetic resin casing having electromagnetic wave shielding properties according to the present invention will be described below with reference to embodiments shown in the drawings.

本発明の合成樹脂筐体はポリカーボネート樹脂層(])
、金属層(3)、電気絶縁性合成樹脂層(5)の少なく
とも三層から成り、必要に応じて接着剤層(2)。
The synthetic resin casing of the present invention is made of a polycarbonate resin layer (])
, a metal layer (3), an electrically insulating synthetic resin layer (5), and optionally an adhesive layer (2).

(4)を含む構造を有するものであり、ポリカーボネー
ト樹脂層、金属層、電気絶縁性合成樹脂層の少なくとも
三層からなり、さらに必要に応じて接着剤層を含む複合
体fh)を射出底形用金型の雄型あるいは雌型に挿入し
、該複合体のポリカーボネート樹脂面\、tを雌型ある
いは雄型側に向けて固定し【金型を閉じ、溶融したポリ
カーボネート樹脂、を金型内に射出し、冷却固化し、一
体成形することができる。
(4), which consists of at least three layers: a polycarbonate resin layer, a metal layer, and an electrically insulating synthetic resin layer, and further includes an adhesive layer as necessary. Insert the composite into the male or female mold, and fix the composite with the polycarbonate resin surface \, t facing the female or male side. [The mold is closed, and the molten polycarbonate resin is It can be injected, cooled and solidified, and then molded into one piece.

次に本発明の金属層(3)としては鉄箔、鋼箔、アルミ
ニウム箔、亜鉛箔、すず箔等の金属箔が通しており、そ
の厚みは20〜200μmで、好ましくは20〜50μ
mがよい。電気絶縁性合成樹脂N(51としてはポリプ
ロピレン、ボリヌチレン、ポリ塩化ビニル、ポリエチレ
ンテレフタレート、ポリアミド、ポリカーボネート、ポ
リイミド等の高分子フィルムが適しており、その厚みは
10〜200μm1表面固有抵抗値は101′〜10″
Ωが好ましい。接着剤+21+41はアクリル系、ポリ
ウレタン系、ボリエヌテル系、ポリ酢酸ビニル系、エポ
キシ系等の接着剤が適している。
Next, as the metal layer (3) of the present invention, a metal foil such as iron foil, steel foil, aluminum foil, zinc foil, tin foil, etc. is passed through, and the thickness thereof is 20 to 200 μm, preferably 20 to 50 μm.
m is good. As the electrically insulating synthetic resin N (51, polymer films such as polypropylene, borinutylene, polyvinyl chloride, polyethylene terephthalate, polyamide, polycarbonate, polyimide, etc. are suitable; the thickness thereof is 10 to 200 μm; the surface resistivity value is 101' to 10″
Ω is preferred. Suitable adhesives for the adhesive +21+41 include acrylic, polyurethane, polyester, polyvinyl acetate, and epoxy adhesives.

ポリカーボ、ネート樹脂層+11は複合体のポリカーボ
ネート樹脂(9)層と射出底形用ポリカーボネート樹脂
 、が成形時に熱融着して一体化した構造よりなるQ 複合体のポリカーボネート樹脂層(9)はポリカーボネ
ートフィルムが適しており、その厚みは2゛0〜100
μmが好ましい。
The polycarbonate resin layer +11 has a structure in which the polycarbonate resin layer (9) of the composite and the polycarbonate resin for the injection bottom shape are thermally fused and integrated during molding.The polycarbonate resin layer (9) of the composite is made of polycarbonate. Film is suitable, its thickness is 2゛0~100
μm is preferred.

上記各層の積層順は一例として第1図に示すように筐体
側から順にポリカーボネート樹脂層11)/接着剤層(
2)/金属層(3)/接着剤層(4)/電気絶縁性台f
El樹脂層(5)というものが適している。
As an example, the lamination order of each of the above layers is as shown in FIG.
2) / Metal layer (3) / Adhesive layer (4) / Electrical insulating stand f
An El resin layer (5) is suitable.

なお、金属層は二層以上また異種の金属層を二層以上積
層してもかまわず、遮蔽性の点で金属層を二層以上にす
ることは特に好ましい。
Note that two or more metal layers or two or more metal layers of different types may be laminated, and it is particularly preferable to use two or more metal layers from the viewpoint of shielding properties.

ポリカーボネート樹脂層、金属層、電気絶縁性合成樹脂
層の少なくとも三層からなる複合体[111は。
A composite body [111] consisting of at least three layers: a polycarbonate resin layer, a metal layer, and an electrically insulating synthetic resin layer.

射出成形用金型の雄型あるいは雌型の形状の一部分と類
似形状あるいは同一形状にあらかじめ切断したり、予備
成形したものを金型内に挿入し、成形してもよい。
It may be pre-cut into a shape similar to or the same as a part of the male or female mold of an injection mold, or a preformed material may be inserted into the mold and molded.

(実施例1) ポリエチレンテレフタレートフィルムf61 s oμ
(Example 1) Polyethylene terephthalate film f61 soμ
.

ウレタン系接着剤層+71. 5μ、鉄箔(13125
μ、ウレタン系接着剤層(7)5μ、ポリカーボネート
フィルム(9120μを積層した複合体(第゛2図)を
射出成形用金型の雌型にポリエチレンテレフタレートフ
ィル4面を金型面に向けて固定し、溶融したポリカーボ
ネート樹脂 (溶融温度500℃)を射出し、冷却固化
(金型温度80℃)して一体成形されたものを本考案の
合成樹脂筐体とした。
Urethane adhesive layer +71. 5μ, iron foil (13125
A composite body (Figure 2) consisting of laminated layers of μ, urethane adhesive layer (7) 5 μ, and polycarbonate film (9120 μ) is fixed to the female mold of an injection mold with the 4 sides of the polyethylene terephthalate film facing the mold surface. Then, molten polycarbonate resin (melting temperature: 500°C) was injected, cooled and solidified (mold temperature: 80°C), and integrally molded to form the synthetic resin casing of the present invention.

実施例において150X 150X2mの試片な用い、
電界および磁界に対する遮蔽効果をタケダ埋研法により
測定した。測定結果を第1表に示した。
In the examples, a 150X 150X2m specimen was used,
The shielding effect on electric and magnetic fields was measured using the Takeda buken method. The measurement results are shown in Table 1.

(実施例2) ポリエチレンテレフタレートフィルム層16130μ、
ウレタン系接着剤層(615μ、鉄箔(8125μ。
(Example 2) Polyethylene terephthalate film layer 16130μ,
Urethane adhesive layer (615μ, iron foil (8125μ).

ウレタン系接着剤層(7)5μ、鋼箔α[I25μ、ウ
レタン系接着剤(7)5μ、およびポリカーボネートフ
ィルム(9)2oμを積層した複合体(h)(第3図)
を射出底形用金型の雌型にポリエチレンテレフタレート
フィルム(6)面を金型面に向けて固定し、溶融したポ
リカーボネート樹脂−1(溶融温度300℃〕を射出し
、冷却固化(金型温度80℃)して一体収形されたもの
を本考案の合成樹脂筐体とした。
Composite (h) laminated with urethane adhesive layer (7) 5μ, steel foil α[I25μ, urethane adhesive (7) 5μ, and polycarbonate film (9) 2oμ (Figure 3)
was fixed to the female mold of the injection bottom mold with the polyethylene terephthalate film (6) facing the mold surface, and molten polycarbonate resin-1 (melting temperature 300°C) was injected and solidified by cooling (mold temperature 80°C) and integrally housed to form the synthetic resin casing of the present invention.

第1表 電界および磁界に対する遮蔽効果(dB)第1
表に示すように本後哨の合FiLat脂筐体は20〜1
000 MHzの周波数帯で電界およ−び磁界に対して
25〜65dBの十分な電磁波遮蔽効果が得られた。さ
らに実施例2のように金属層を2層積層することにより
500〜t O’00 MHzの周波数帯で遮蔽効果が
向上した。
Table 1 Shielding effect on electric and magnetic fields (dB) 1st
As shown in the table, the FiLat fat casing of this post is 20~1
A sufficient electromagnetic wave shielding effect of 25 to 65 dB against electric and magnetic fields in the frequency band of 000 MHz was obtained. Furthermore, by laminating two metal layers as in Example 2, the shielding effect was improved in the frequency band of 500 to t O'00 MHz.

(発明の効果) 以上、説明したように本発明の合Fy、111t脂筐体
はポリカーボネート樹脂層、金属層、電気絶縁性合成樹
脂層の少なくとも三層からなり、必要に応じて接着剤層
を含む構造を有しているため、各層間の密着性は良好で
、金属層がポリカーボネート樹脂層と電気絶縁性台am
m層の間に積層されているため活電部とのシッートや漏
電、感電の恐れもなく、さらに金属層のさびや腐食の心
配もない。
(Effects of the Invention) As explained above, the composite Fy, 111t resin casing of the present invention consists of at least three layers: a polycarbonate resin layer, a metal layer, and an electrically insulating synthetic resin layer, and an adhesive layer is added as necessary. Because it has a structure including
Since it is laminated between m layers, there is no risk of contact with live parts, leakage, or electric shock, and there is no fear of rust or corrosion of the metal layer.

また、ポリカーボネート樹脂層が用いられているため筐
体の耐衝撃性、難燃性が良好である。
Furthermore, since a polycarbonate resin layer is used, the housing has good impact resistance and flame retardancy.

金属層が一層の場合は均一な厚みであり10〜100M
Hzで遮蔽効果が良好であるが、金属層を二層以上積層
すれば10〜100100Oで遮蔽効果は向上する。
If the metal layer is one layer, the thickness is uniform and is 10 to 100M.
The shielding effect is good at Hz, but the shielding effect improves at 10 to 100100O if two or more metal layers are laminated.

複合体を射出成形用金型内に挿入し、固定して溶融した
ポリカーボネート樹脂を射出し、冷却固化することKよ
り一体成形されているため密着性は良好で、加えて塗装
などの二次工程は必要なくなる効果をもっている。
The composite is inserted into an injection mold, fixed, and molten polycarbonate resin is injected, cooled and solidified.Since the composite is molded in one piece, it has good adhesion, and in addition, secondary processes such as painting are not possible. has the effect of making it unnecessary.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の一実施例を示すもので、第1図。 第2図(を第3因は本発明の材質構収の実施例を示す断
面図である。 11)・・;・・・・・・ポリカーボネート樹脂+21
 i4+・・・接着剤
The drawings show one embodiment of the present invention, and FIG. Fig. 2 (The third factor is a sectional view showing an embodiment of the material composition of the present invention. 11)...; Polycarbonate resin +21
i4+...adhesive

Claims (1)

【特許請求の範囲】 1)少なくともポリカーボネート樹脂、金属、電気絶縁
性合成樹脂の三層構造を有する電磁波遮蔽性を有する合
成樹脂製筺体。 2)ポリカーボネート樹脂、金属、電気絶縁性合成樹脂
の各層相互間に必要に応じて接着剤層を設けたことを特
徴とする特許請求の範囲第1項記載の電磁波遮蔽性を有
する合成樹脂製筺体。
[Scope of Claims] 1) A synthetic resin housing having electromagnetic wave shielding properties and having a three-layer structure of at least polycarbonate resin, metal, and electrically insulating synthetic resin. 2) A synthetic resin casing having electromagnetic wave shielding properties as set forth in claim 1, characterized in that an adhesive layer is provided between each layer of polycarbonate resin, metal, and electrically insulating synthetic resin as necessary. .
JP16700784A 1984-08-09 1984-08-09 Synthetic resin housing having electromagnetic wave shielding property Pending JPS6144499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16700784A JPS6144499A (en) 1984-08-09 1984-08-09 Synthetic resin housing having electromagnetic wave shielding property

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16700784A JPS6144499A (en) 1984-08-09 1984-08-09 Synthetic resin housing having electromagnetic wave shielding property

Publications (1)

Publication Number Publication Date
JPS6144499A true JPS6144499A (en) 1986-03-04

Family

ID=15841647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16700784A Pending JPS6144499A (en) 1984-08-09 1984-08-09 Synthetic resin housing having electromagnetic wave shielding property

Country Status (1)

Country Link
JP (1) JPS6144499A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015523709A (en) * 2012-06-21 2015-08-13 広州方邦電子有限公司 Ultra-thin shield film with high shielding function and method for producing the same
JP2017183675A (en) * 2016-03-31 2017-10-05 Jx金属株式会社 Electromagnetic wave shielding enclosure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015523709A (en) * 2012-06-21 2015-08-13 広州方邦電子有限公司 Ultra-thin shield film with high shielding function and method for producing the same
JP2017183675A (en) * 2016-03-31 2017-10-05 Jx金属株式会社 Electromagnetic wave shielding enclosure

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