KR930017477A - 전자기 차폐 구조체 및 그의 제조방법 - Google Patents
전자기 차폐 구조체 및 그의 제조방법 Download PDFInfo
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- KR930017477A KR930017477A KR1019920024703A KR920024703A KR930017477A KR 930017477 A KR930017477 A KR 930017477A KR 1019920024703 A KR1019920024703 A KR 1019920024703A KR 920024703 A KR920024703 A KR 920024703A KR 930017477 A KR930017477 A KR 930017477A
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- base material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
- B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/208—Magnetic, paramagnetic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T428/1359—Three or more layers [continuous layer]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dispersion Chemistry (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
전자장치용 밀폐체는 전자기 방사에너지에 대한 장벽을 형성한다. 이 밀폐체의 대표적인 단면은 3개의 평행한 층을 포함한다. 이 내, 외 표면층은 전기전도성 충전재가 그 내에 현탁되어 이 표면층들에 비교적 높은 전기 전도율을 부여하는 중합체 기본물질로 이루어진다. 중간층은 고 투자율을 갖는 충전재가 그 내에 현탁되어 중간층에 비교적 높은 투자율을 부여하는 중합제 기본물질로 이루어진다. 바람직한 실시예에 있어서, 이 밀폐체는 공-사출성형 방법에 사용하여 제조된다. 중합체 기본물질내의 니켈-피복된 흑연(고 전도율)은 외측 공-사출노즐로부터 모울드내에 사출되며, 반면에 중합체 기본물질내의 카보닐 철 분말(고투자율)은 내측 공-사출 노즐로부터 모울드래로 사출된다. 완성된 성형구조체는 상술한 3개층 구조를 포함하지만, 1회의 공-사출 성형작업으로 저렴하게 재조될 수 있다. 상기 밀폐체는 통상적인 각종수단중 어느 하나에 의해 서로 부착되는 다수의 공-사출성형된 부재들을 포함할 수 있다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 바람직한 실시예에 따른 대표적인 전자 장치의 단면도.
Claims (14)
- 다수의 전자회로를 갖는 전자장치용 밀폐(enclosure)에 있어서, 상기 전자장치의 외부에 배치되며, 중합체 기본물질(polymeric base)내에 현탁(suspended)된 전기전도성 충전재(electrically conductive fill material)를 포함하는 외면층과; 상기 전자장치의 내부에 배치되어 상기 전자회로와 직면하며, 중합체 기본물질내에 현탁된 전기전도성 충전제를 포함하는 내면층과; 상기 외면층과 상기 내면층의 사이에 배치되어 상기 외면층 및 내면층과 접촉하며, 중합체 기본물질내에 현탁된 투자성 충전재(magnetically permeable fill material)를 포함하는 중간층을 구비하는 밀폐체.
- 제1항에 있어서, 상기 중간층의 투자성 충전재는 카보닐 철 분말(carbonyl iron powder)을 포함하는 밀폐체.
- 제1항에 있어서, 상기 전기전도성 충전재는 니켈-피복된 흑연섬유 (nickel-coated graphite fibers)를 포함하는 필폐체.
- 제1항에 있어서, 상기 밀폐체의 부분은 공-사출성형(co-injection molding)에 의하여 형성된 사출성형된 부분인 밀폐체.
- 제4항에 있어서, 상기 중간층의 투자성 충전재는 카보닐 철 분말을 포함하는 밀폐체.
- 제4항에 있어서, 상기 전기전도성 충전재들은 서로 동일하며 니켈-피복된 흑연섬유를 포함하는 밀폐체.
- 제4항에 있어서, 상기 중합체 기본물질들은 각기 ABS와 폴리카보네이트의 혼합물을 포함하는 밀폐체.
- 중합체 기본물질내에 현탁된 진기전도성 충전재를 포함하느 제1층과; 중합체 기본물질내에 현탁된 전기전도성 충전재를 포함하는 제2층과; 상기 제1층과 제2층 상이에 배치되어 제1및 제2층들의 거의 전 길이에 걸쳐서 제1및 제2층들을 분리시키며, 중합체 기본물질내에 현탁된 투자성 충전재를 포함하는 제3층을 구비하는 전자기 차페 구조체.
- 제8항에 있어서, 상기 전자기 차폐 구조체는 공-사출성형에 의해 형성된 사출 성형된 부분을 포함하는 전자기 차폐 구조체.
- 전저가 차폐 구조체의 제조방법에 있어서, 상기 구조체에 적합한 형상의 사출모울드를 제조하는 단계와; 중합체 기본물질내에 현탁된 전기전도성 충전재를 공-사출성형 프레스(co-injection press)의 외측 노즐용 호퍼(hopper)내에 주입하는 단계와; 중합체 기본물질내에 현탁된 투자성 충전재를 공-사출성형 프레스의 내측 노즐용 호퍼내에 주입하는 단계와; 상기 중합체 기본물질내에 현탁된 상기 전기전도성 충전재를 상기 외측 노즐을 통하여 상기 사출 모울드내로 사출함과 동시에, 상기 중합체 기본물질내에 현탁된 투자성 충전재를 상기 내측 노즐을 통하여 상기 사출 모울드내로 사출하는 단계를 포함하는 방법.
- 제10항에 있어서, 상기 투자성 충전재는 카보닐 철 분말을 포함하는 방법.
- 제10항에 있어서, 상기 전기전도성 충전재들은 니켈-피복된 흑연섬유를 포함하는 방법.
- 제10항에 있어서, 상기 중합체 기본물질들은 각기 ABS 와 폴리카보니에티의 혼합물을 포함하는 방법.
- ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81669692A | 1992-01-02 | 1992-01-02 | |
US816,696 | 1992-01-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930017477A true KR930017477A (ko) | 1993-08-30 |
KR0119373B1 KR0119373B1 (ko) | 1998-08-01 |
Family
ID=25221372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920024703A KR0119373B1 (ko) | 1992-01-02 | 1992-12-17 | 전자기 차폐 구조체 및 그의 제조방법 |
Country Status (14)
Country | Link |
---|---|
US (2) | US5714102A (ko) |
EP (1) | EP0550373B1 (ko) |
JP (1) | JPH07123197B2 (ko) |
KR (1) | KR0119373B1 (ko) |
CN (1) | CN1028141C (ko) |
AT (1) | ATE139406T1 (ko) |
BR (1) | BR9205014A (ko) |
CA (1) | CA2080177C (ko) |
DE (1) | DE69211518T2 (ko) |
ES (1) | ES2089467T3 (ko) |
HK (1) | HK202096A (ko) |
MY (1) | MY110820A (ko) |
SG (1) | SG42884A1 (ko) |
TW (1) | TW234236B (ko) |
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KR100232138B1 (ko) * | 1997-04-16 | 1999-12-01 | 구자홍 | 칼라음극선관용 자기차폐체(inner shield)의 제조 방법 |
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TW486238U (en) | 1996-08-18 | 2002-05-01 | Helmut Kahl | Shielding cap |
TW345667B (en) * | 1996-09-09 | 1998-11-21 | Tokiin Corp | High thermal conductivity composite magnetic substance |
BR9705156A (pt) * | 1996-10-25 | 2000-01-04 | Massachusetts Inst Technology | Processo e sistema de fabricar um componente que consiste em partes constituìdas de diferentes materiais |
DE29703725U1 (de) * | 1997-03-01 | 1997-04-24 | Emc Testhaus Schwerte Gmbh | Flächenelement zur Einschränkung von HF-Reflexionen |
HUP0004103A3 (en) | 1997-03-05 | 2002-05-28 | Kahl Helmut | Method for producing a shielding case |
JP4063945B2 (ja) | 1998-03-19 | 2008-03-19 | リンテック株式会社 | 電波シールド材 |
US6147301A (en) * | 1998-06-04 | 2000-11-14 | Intel Corporation | Graphite-fiber enhanced molded plastic for electronic enclosures |
US6274070B1 (en) * | 1998-08-07 | 2001-08-14 | Aisin Seiki Kabushiki Kaisha | Methods of producing resin moldings |
US6110576A (en) * | 1998-10-16 | 2000-08-29 | Lucent Technologies Inc. | Article comprising molded circuit |
US6278269B1 (en) * | 1999-03-08 | 2001-08-21 | Allegro Microsystems, Inc. | Magnet structure |
US6284175B1 (en) * | 1999-04-29 | 2001-09-04 | Northrop Grumman Corporation | Method for reducing reflected radio frequency electromagnetic radiation |
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- 1992-11-20 MY MYPI92002117A patent/MY110820A/en unknown
- 1992-11-30 EP EP92480186A patent/EP0550373B1/en not_active Expired - Lifetime
- 1992-11-30 ES ES92480186T patent/ES2089467T3/es not_active Expired - Lifetime
- 1992-11-30 AT AT92480186T patent/ATE139406T1/de not_active IP Right Cessation
- 1992-11-30 SG SG1996000434A patent/SG42884A1/en unknown
- 1992-11-30 DE DE69211518T patent/DE69211518T2/de not_active Expired - Fee Related
- 1992-12-09 JP JP4329295A patent/JPH07123197B2/ja not_active Expired - Fee Related
- 1992-12-15 BR BR9205014A patent/BR9205014A/pt active Search and Examination
- 1992-12-16 CN CN92114605A patent/CN1028141C/zh not_active Expired - Fee Related
- 1992-12-17 KR KR1019920024703A patent/KR0119373B1/ko not_active IP Right Cessation
-
1995
- 1995-04-20 US US08/425,271 patent/US5714102A/en not_active Expired - Fee Related
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1996
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Cited By (1)
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KR100232138B1 (ko) * | 1997-04-16 | 1999-12-01 | 구자홍 | 칼라음극선관용 자기차폐체(inner shield)의 제조 방법 |
Also Published As
Publication number | Publication date |
---|---|
CN1075390A (zh) | 1993-08-18 |
KR0119373B1 (ko) | 1998-08-01 |
CA2080177C (en) | 1997-02-25 |
SG42884A1 (en) | 1997-10-17 |
CN1028141C (zh) | 1995-04-05 |
EP0550373B1 (en) | 1996-06-12 |
US5714102A (en) | 1998-02-03 |
TW234236B (ko) | 1994-11-11 |
EP0550373A1 (en) | 1993-07-07 |
CA2080177A1 (en) | 1993-07-03 |
MY110820A (en) | 1999-05-31 |
DE69211518T2 (de) | 1996-11-28 |
DE69211518D1 (de) | 1996-07-18 |
US5571991A (en) | 1996-11-05 |
ES2089467T3 (es) | 1996-10-01 |
HK202096A (en) | 1996-11-15 |
BR9205014A (pt) | 1993-07-06 |
JPH05327275A (ja) | 1993-12-10 |
ATE139406T1 (de) | 1996-06-15 |
JPH07123197B2 (ja) | 1995-12-25 |
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