WO1995007600B1 - Laminated shielding material and method for shielding an enclosure therewith - Google Patents
Laminated shielding material and method for shielding an enclosure therewithInfo
- Publication number
- WO1995007600B1 WO1995007600B1 PCT/US1994/009944 US9409944W WO9507600B1 WO 1995007600 B1 WO1995007600 B1 WO 1995007600B1 US 9409944 W US9409944 W US 9409944W WO 9507600 B1 WO9507600 B1 WO 9507600B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal
- electrically conductive
- fibers
- shielding
- sheet
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract 19
- 239000002184 metal Substances 0.000 claims abstract 39
- 239000000835 fiber Substances 0.000 claims abstract 22
- 239000000758 substrate Substances 0.000 claims abstract 21
- 239000000853 adhesive Substances 0.000 claims abstract 15
- 230000001070 adhesive Effects 0.000 claims abstract 15
- 239000011888 foil Substances 0.000 claims abstract 8
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract 2
- 239000004020 conductor Substances 0.000 claims 8
- 239000011800 void material Substances 0.000 claims 6
- 238000007789 sealing Methods 0.000 claims 5
- 230000000149 penetrating Effects 0.000 claims 4
- 239000002131 composite material Substances 0.000 claims 2
- 238000001035 drying Methods 0.000 claims 2
- 230000035515 penetration Effects 0.000 claims 2
Abstract
A shielding system for an enclosure wherein strips of shielding material including a layer of metal (2, 2'), for example, metal foil or gauge metal, are placed on the walls (10) of the enclosure in an overlapping or abutting relationship, with shielding tape between the overlapped portions or overlying the butted seam. The shielding tape preferably consists of an electrically conductive nonwoven mat (4) of entangled fibers which is laminated on one side to metal foil (12) and which is bonded on the other side to the metal substrates (2, 2') using nonconductive adhesive. The entangled fibers penetrate the nonconductive adhesive and contact the surface of the metal substrate (2, 2') to provide an electrical continuity that seals the seam against leakage of electromagnetic radiation.
Claims
1. A system for shielding an enclosure, comprising first and second metal substrates having a seam therebetween, and means for sealing said seam to prevent leakage of electromagnetic radiation into said enclosure, said sealing means comprising a first electrically conductive nonwoven mat comprising randomly oriented and randomly packed fibers having a large void volume for accommodating a layer of nonconductive adhesive which penetrates said first nonwoven mat when not yet dried and which bonds said first nonwoven mat to said first metal substrate when dried, said penetration of said nonconductive adhesive allowing at least some of said fibers to contact the surface of said first metal substrate in said bonded state.
2. The shielding system as defined in claim 1, wherein said first and second metal substrates each comprise metal foil or gauge metal.
3. The shielding system as defined in claim 1, wherein said sealing means further comprises metal foil laminated to said first nonwoven mat.
4. The shielding system as defined in claim 1, wherein said fibers are made of electrically conductive material.
5. The shielding system as defined in claim 1, wherein said fibers are made of electrically nonconductive material coated with an electrically conductive material.
6. The shielding system as defined in claim 1, wherein said seam is a butted seam and said electrically conductive nonwoven mat of said sealing means overlies said butted seam.
7. The shielding system as defined in claim 1, wherein said seam is a lap seam and said electrically conductive nonwoven mat of said sealing means is between overlapping portions of said first and second metal substrates.
8. A system for shielding an enclosure, comprising first and second flexible strips of composite shielding material adhered to a wall of said enclosure with overlapping portions of said first and second flexible strips forming a lap seam, each of said flexible strips of composite shielding material comprising a metal substrate laminated to an electrically conductive nonwoven mat of randomly oriented and randomly packed fibers, said metal substrate of said overlapping portion of said first flexible strip opposing said nonwoven mat of said overlapping portion of said second flexible strip, and further comprising a layer of nonconductive adhesive which penetrates said nonwoven mat of said overlapping portion of said second flexible strip when not yet dried and which bonds said nonwoven mat of said overlapping portion of said second flexible strip to said metal substrate of said overlapping portion of said first flexible strip when dried, said penetration of said nonconductive adhesive allowing at least some of said fibers of said nonwoven mat of said overlapping portion of said second flexible strip to contact the surface of said metal substrate of said overlapping portion of said first flexible strip in said bonded state, said nonwoven mat having a large void volume for accommodating said nonconductive adhesive.
9. The shielding system as defined in claim 8, wherein said first and second metal substrates each comprise metal foil.
10. The shielding system as defined in claim 8, wherein said fibers are made of electrically conductive material.
11. The shielding system as defined in claim 8, wherein said fibers are made of electrically nonconductive material coated with an electrically conductive material.
12. A method for shielding an enclosure, comprising the steps of: applying a first sheet of shielding material comprising a metal substrate on a surface of said enclosure so that one side of said metal substrate of said first sheet is exposed; applying a second sheet of shielding material comprising a metal substrate on said surface of said enclosure so that one side of said metal substrate of said second sheet is exposed, said first and second metal substrates being arranged to abut along respective edges thereof to form a butted seam; overlying said butted seam along its entire length with electrically conductive nonwoven material comprising randomly oriented and randomly packed fibers and having a large void volume; applying a layer of undried nonconductive adhesive between said electrically conductive nonwoven material and said first and second metal substrates, said fibers of said nonwoven material penetrating said undried nonconductive adhesive and contacting the surfaces of said first and second metal substrates, said nonconductive adhesive being displaced by said penetrating fibers and accommodated in said large void volume; and drying said nonconductive adhesive so that said electrically conductive nonwoven material is bonded to said first and second metal substrates with at least some of said fibers in contact with said surfaces thereof.
13. The method as defined in claim 12, wherein said first and second metal substrate each comprise metal foil or gauge metal.
14. The method as defined in claim 12, wherein said electrically conductive nonwoven material is laminated to metal foil.
15. The method as defined in claim 12, wherein said fibers are made of electrically conductive material.
16. The method as defined in claim 12, wherein said fibers are made of electrically nonconductive material coated with an electrically conductive material.
17. A method for shielding an enclosure, comprising the steps of: applying first and second sheets of shielding material on a surface of said enclosure, each of said first and second sheets comprising an electrically conductive nonwoven mat of randomly oriented and randomly packed fibers having a large void volume laminated to a flexible layer of metal, said first and second sheets being arranged to overlap along respective edges thereof to form a lap seam with a portion of said electrically conductive nonwoven mat of said first sheet opposing a portion of said flexible layer of metal of said second sheet; applying a layer of undried nonconductive adhesive between said electrically conductive nonwoven material of said first sheet and said flexible layer of metal of said second sheet, said fibers of said nonwoven material of said first sheet penetrating said undried nonconductive adhesive and contacting the surface of said flexible layer of metal of said second sheet, said nonconductive adhesive being displaced by said penetrating fibers and accommodated in said large void volume; and drying said nonconductive adhesive so that said electrically conductive nonwoven material of said first sheet is bonded to said flexible layer of metal of said second sheet with at least some of said fibers in contact with said surface thereof.
18. The method as defined in claim 17, wherein said first and second flexible layers of metal each comprise metal foil.
19. The method as defined in claim 17, wherein said fibers are made of electrically conductive material.
20. The method as defined in claim 17, wherein said fibers are made of electrically nonconductive material coated with an electrically conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU78306/94A AU7830694A (en) | 1993-09-03 | 1994-09-02 | Laminated shielding material and method for shielding an enclosure therewith |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/116,455 US5595801A (en) | 1991-07-30 | 1993-09-03 | Laminated shielding material and method for shielding an enclosure therewith |
| US08/116,455 | 1993-09-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1995007600A2 WO1995007600A2 (en) | 1995-03-16 |
| WO1995007600A3 WO1995007600A3 (en) | 1995-05-11 |
| WO1995007600B1 true WO1995007600B1 (en) | 1995-06-29 |
Family
ID=22367302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/009944 WO1995007600A2 (en) | 1993-09-03 | 1994-09-02 | Laminated shielding material and method for shielding an enclosure therewith |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5595801A (en) |
| AU (1) | AU7830694A (en) |
| WO (1) | WO1995007600A2 (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2728395A1 (en) * | 1994-12-16 | 1996-06-21 | Eurocopter France | COMPOSITE MATERIAL ELEMENT WITH ELECTRIC CONTINUITY ASSEMBLY THROUGH THE ELEMENT, ITS MANUFACTURING METHOD AND ITS USE IN AERONAUTICS |
| US5665274A (en) * | 1995-12-22 | 1997-09-09 | Hughes Aircraft Company | Electrically conductive black silicone paint having spacecraft applications |
| US5777400A (en) * | 1996-07-22 | 1998-07-07 | Bouthillier; Stephen W. | Shielded computer network switch |
| US5698316A (en) * | 1996-10-07 | 1997-12-16 | The Boeing Company | Apparatus and methods of providing corrosion resistant conductive path across non conductive joints or gaps |
| US6043169A (en) * | 1997-09-04 | 2000-03-28 | Johns Manville International, Inc. | Nonwoven RF reflecting mats and method of making |
| US6282848B1 (en) | 1998-05-08 | 2001-09-04 | Imedco Ag | Floor, ceiling and wall construction for a magnetically shielded room |
| US6462268B1 (en) | 1998-08-06 | 2002-10-08 | Krone, Inc. | Cable with twisting filler and shared sheath |
| US6359213B1 (en) * | 1999-10-26 | 2002-03-19 | L. Jacqueline Long | Emissions blocking apparatus |
| US6316734B1 (en) * | 2000-03-07 | 2001-11-13 | 3M Innovative Properties Company | Flexible circuits with static discharge protection and process for manufacture |
| US6519899B1 (en) * | 2000-10-31 | 2003-02-18 | Imedco Ag | Radio frequency shielded and acoustically insulated door |
| US20050178496A1 (en) * | 2001-02-15 | 2005-08-18 | Integral Technologies, Inc. | Low cost electrically conductive tapes and films manufactured from conductive loaded resin-based materials |
| US6626264B1 (en) | 2001-10-30 | 2003-09-30 | Igt | Radio frequency shielded and acoustically insulated enclosure |
| US7063767B1 (en) * | 2002-02-08 | 2006-06-20 | Proteus Technical Solutions, Inc. | Process for creating a durable EMI/RFI shield between two or more structural surfaces and shield formed therefrom |
| WO2003100995A2 (en) * | 2002-05-28 | 2003-12-04 | Astic Signals Defenses L.L.C. | A system and method for filtering electromagnetic and visual transmissions and for minimizing acoustic transmissions |
| US6912135B1 (en) * | 2002-11-13 | 2005-06-28 | Ncr Corporation | Providing shields for systems |
| US20070036640A1 (en) * | 2003-03-12 | 2007-02-15 | Randy Boudreaux | Methods, systems and apparatuses for retrieving an entity from a confined space |
| US8495851B2 (en) * | 2004-09-10 | 2013-07-30 | Serious Energy, Inc. | Acoustical sound proofing material and methods for manufacturing same |
| US7629071B2 (en) * | 2004-09-29 | 2009-12-08 | Giner Electrochemical Systems, Llc | Gas diffusion electrode and method of making the same |
| US7012190B1 (en) * | 2004-12-08 | 2006-03-14 | General Dynamics Armament And Technical Products, Inc. | Seam bracket for EMI shielded structure |
| DE102005023344A1 (en) * | 2005-05-17 | 2006-11-23 | Wolfgang Kessel | Electromagnetic shielding against high frequency radiation comprises overlapping electrically conducting braiding or grid sections that are electrically conductively connected together and connected to earth potential |
| US8029881B2 (en) * | 2005-11-04 | 2011-10-04 | Serious Energy, Inc. | Radio frequency wave reducing material and methods for manufacturing same |
| WO2007130910A1 (en) * | 2006-05-05 | 2007-11-15 | Meadwestvaco Corporation | Electrically conductive, energy absorptive sheet material |
| US8424251B2 (en) * | 2007-04-12 | 2013-04-23 | Serious Energy, Inc. | Sound Proofing material with improved damping and structural integrity |
| US8397864B2 (en) | 2007-04-24 | 2013-03-19 | Serious Energy, Inc. | Acoustical sound proofing material with improved fire resistance and methods for manufacturing same |
| US8324762B2 (en) * | 2008-11-21 | 2012-12-04 | Christian Harvey Keller | Magnetically propelled engine with magnetic field reduction |
| US8173911B2 (en) * | 2008-11-26 | 2012-05-08 | Flir Systems, Inc. | Electronic package |
| DE102011109578B4 (en) * | 2011-08-05 | 2015-05-28 | Heraeus Noblelight Gmbh | Method for producing an electrically conductive material, electrically conductive material and radiator with electrically conductive material |
| US10510433B2 (en) | 2014-08-28 | 2019-12-17 | Shield Your Body Llc | Electromagnetic radiation shielding tile having electromagnetic shielding fabric and metal portions |
| US10875624B2 (en) * | 2016-01-17 | 2020-12-29 | Toyota Tsusho America, Inc. | Carbon flocked tape |
| US11147195B2 (en) | 2018-06-02 | 2021-10-12 | Merakai, LLC | Faraday enclosure apparatus and method of manufacturing same |
Family Cites Families (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2498493A (en) * | 1945-06-22 | 1950-02-21 | Anaconda Wire & Cable Co | Electrically conducting composite sheet |
| US2808352A (en) * | 1951-03-22 | 1957-10-01 | Burgess Battery Co | Electrically conductive adhesive tape |
| US2702580A (en) * | 1954-04-06 | 1955-02-22 | Du Pont | Metallic finish laminated sheet material and process of making same |
| US2961365A (en) * | 1954-10-13 | 1960-11-22 | Du Pont | Lamination of polyethylene terephthalate structures |
| US2964587A (en) * | 1956-11-16 | 1960-12-13 | Otis N Minot | Tape conductor |
| US3112221A (en) * | 1960-07-06 | 1963-11-26 | Duracote Corp | Electro-magnetic wave reflecting laminate and method of making it |
| US3431348A (en) * | 1966-05-06 | 1969-03-04 | Tech Wire Prod Inc | Electromagnetic shield and viewing laminate |
| US3512946A (en) * | 1967-04-17 | 1970-05-19 | Lash Mfg Inc | Composite material for shielding electrical and magnetic energy |
| US3497383A (en) * | 1967-08-22 | 1970-02-24 | Minnesota Mining & Mfg | Electrically conductive adhesive tape |
| US3770570A (en) * | 1970-04-23 | 1973-11-06 | Dow Chemical Co | Cable shielding tape |
| US4045607A (en) * | 1970-04-23 | 1977-08-30 | The Dow Chemical Company | Cable shielding tape |
| US4031281A (en) * | 1975-10-02 | 1977-06-21 | Formica Corporation | Flocked metallic laminated wallcoverings |
| DE3024888A1 (en) * | 1980-07-01 | 1982-02-04 | Bayer Ag, 5090 Leverkusen | COMPOSITE MATERIAL FOR SHIELDING ELECTROMAGNETIC RADIATION |
| US4678699A (en) * | 1982-10-25 | 1987-07-07 | Allied Corporation | Stampable polymeric composite containing an EMI/RFI shielding layer |
| SE450293B (en) * | 1983-04-07 | 1987-06-15 | Diab Barracuda Ab | RADAR MASK |
| US4622192A (en) * | 1984-01-10 | 1986-11-11 | Phillips Petroleum Company | Stampable sheets of glass/carbon fiber mat reinforced polymers of olefin and method of preparation |
| US4544571A (en) * | 1984-02-13 | 1985-10-01 | Pennwalt Corporation | Method of manufacture of EMI/RFI vapor deposited composite shielding panel |
| US4596897A (en) * | 1984-03-12 | 1986-06-24 | Neptco Incorporated | Electrical shielding tape with interrupted adhesive layer and shielded cable constructed therewith |
| US4686141A (en) * | 1984-05-11 | 1987-08-11 | Brunswick Corporation | Pellicular laminate means for shielding structures from electromagnetic radiation |
| US4686127A (en) * | 1984-05-11 | 1987-08-11 | Brunswick Corporation | Pellicular laminate means for shielding structures from electromagnetic radiation |
| US4728395A (en) * | 1984-10-12 | 1988-03-01 | Stackpole Fibers Company, Inc. | Controlled resistivity carbon fiber paper and fabric sheet products and method of manufacture |
| US4684762A (en) * | 1985-05-17 | 1987-08-04 | Raychem Corp. | Shielding fabric |
| GB8431784D0 (en) * | 1984-12-17 | 1985-01-30 | Connor L O | Tape for wrapping electrical conductors |
| US4647714A (en) * | 1984-12-28 | 1987-03-03 | Sohwa Laminate Printing Co., Ltd. | Composite sheet material for magnetic and electronic shielding and product obtained therefrom |
| US4774148A (en) * | 1984-12-28 | 1988-09-27 | Showa Laminate Printing Co., Ltd. | Composite sheet material for magnetic and electronic shielding and product obtained therefrom |
| JPS61167071A (en) * | 1985-01-18 | 1986-07-28 | ミドリシー・エム・ビー株式会社 | Production of nonwoven molded product containing synthetic fiber |
| JPS61187297A (en) * | 1985-02-14 | 1986-08-20 | 日本ジツパ−チユ−ビング株式会社 | Shielding tape and manufacture thereof |
| SE446924B (en) * | 1985-02-22 | 1986-10-13 | Devex Sa | SETTING UP THE DESIGN OF AN ESSENTIAL ELECTROMAGNETIC RADIATION |
| US4689098A (en) * | 1985-10-11 | 1987-08-25 | Phillips Petroleum Company | Molding composition |
| US4781971A (en) * | 1985-12-16 | 1988-11-01 | Hoechst Celanese Corporation | Electrically conductive thermally stabilized acrylic fibrous material and process for preparing same |
| DE3545760A1 (en) * | 1985-12-21 | 1987-06-25 | Henkel Kgaa | ELECTRICALLY CONDUCTIVE FLOOR CONSTRUCTION |
| JPS62216300A (en) * | 1986-03-17 | 1987-09-22 | 株式会社イナックス | Manufacture of conductive nonwoven fabric composite molded board |
| US4749625A (en) * | 1986-03-31 | 1988-06-07 | Hiraoka & Co., Ltd. | Amorphous metal laminate sheet |
| US4759986A (en) * | 1986-10-23 | 1988-07-26 | Hoechst Celanese Corporation | Electrically conductive polybenzimidazole fibrous material |
| US4794206A (en) * | 1986-11-20 | 1988-12-27 | Industrial Acoustics Company, Inc. | RF shielded and acoustic room |
| GB2200321B (en) * | 1987-02-03 | 1990-07-18 | Pilkington Brothers Plc | Electromagnetic shielding laminate |
| JPS63292699A (en) * | 1987-05-26 | 1988-11-29 | Fuji Kobunshi Kk | Electromagnetic-wave shielding decorative laminated sheet |
| GB8713756D0 (en) * | 1987-06-12 | 1987-07-15 | Procter & Gamble | Liquid detergent |
| US4830901A (en) * | 1988-02-22 | 1989-05-16 | Cooper Industries, Inc. | Pre-lubricated metallic shield tape |
| US4965408A (en) * | 1989-02-01 | 1990-10-23 | Borden, Inc. | Composite sheet material for electromagnetic radiation shielding |
| US5117065A (en) * | 1990-06-15 | 1992-05-26 | Savage Howard S | Method of joining shielding used for minimizing EMI or RFI, and the joint formed by the method |
-
1993
- 1993-09-03 US US08/116,455 patent/US5595801A/en not_active Expired - Lifetime
-
1994
- 1994-09-02 AU AU78306/94A patent/AU7830694A/en not_active Abandoned
- 1994-09-02 WO PCT/US1994/009944 patent/WO1995007600A2/en active Application Filing
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1995007600B1 (en) | Laminated shielding material and method for shielding an enclosure therewith | |
| WO1995007600A3 (en) | Laminated shielding material and method for shielding an enclosure therewith | |
| US4421807A (en) | Sheet-like sealing web | |
| US4251712A (en) | Packaging arrangement for electrical heating units adapted for adhesive attachment to a surface | |
| US4750957A (en) | Method of making a shield that is substantially opaque to electromagnetic radiation | |
| US4977296A (en) | Radio frequency shielding tape | |
| ZA829428B (en) | A method and apparatus for joining sheet material | |
| CA1259770A (en) | Method and means for sealing | |
| EP0078695A3 (en) | Patch closure system | |
| SE9501017D0 (en) | Laminate for sealing capsules | |
| US5494755A (en) | Passive intermodulation products (PIM) free tape | |
| DE3778633D1 (en) | METHOD FOR CONNECTING OVERLAPPING EDGES OF A MULTI-LAYER FILM AND TUBE TUBE PRODUCED BY THE METHOD. | |
| ES524805A0 (en) | PROCEDURE WITH ITS CORRESPONDING DEVICE FOR THE MANUFACTURE OF A COMPOSITE TAPE | |
| ES8300364A1 (en) | Metallized bonded sheet comprising a polyolefinic film and a paper or paperboard sheet. | |
| JPS6020195U (en) | Electromagnetic wave shielding material | |
| CA2002858A1 (en) | Phenolic foam roof insulation of improved dimensional stability | |
| JPH0133669Y2 (en) | ||
| JPH10151601A (en) | Veneer laminate and its manufacture | |
| JPH0417556Y2 (en) | ||
| JPS55144454A (en) | Multilayer glass | |
| JPS6484783A (en) | Dielectric substrate | |
| JPH071111U (en) | Space electromagnetic shield structure | |
| JPH0223039Y2 (en) | ||
| GB2304510A (en) | Flexible heating elements | |
| FR2446717A1 (en) | Lamination of film and card with print on the film interface - using temporarily prefabricated laminates to keep the film flat |