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1. WO2020198593 - FLEXIBLE AND FOLDABLE ELECTROMAGNETIC SHIELDING

Publication Number WO/2020/198593
Publication Date 01.10.2020
International Application No. PCT/US2020/025230
International Filing Date 27.03.2020
IPC
H05K 9/00 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
CPC
D06M 11/83
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
11Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
83with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
H05K 9/0084
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
0073Shielding materials
0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
0084comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition
H05K 9/0088
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
0073Shielding materials
0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
0088comprising a plurality of shielding layers; combining different shielding material structure
H05K 9/009
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
0073Shielding materials
0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
009comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
Applicants
  • WARWICK MILLS, INC. [US]/[US]
Inventors
  • HOWLAND, Charles A.
Agents
  • BURUM, Douglas P
  • MAINE, Vernon C.
  • CERNOTA, Andrew P.
  • RARDIN, David A.
  • CURRAN, Matthew J.
Priority Data
62/824,44427.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FLEXIBLE AND FOLDABLE ELECTROMAGNETIC SHIELDING
(FR) BLINDAGE ÉLECTROMAGNÉTIQUE FLEXIBLE ET PLIABLE
Abstract
(EN)
A flexible, foldable EM barrier attenuates electromagnetic radiation by at least 20 dB from 1 GHz to 30 GHz. The barrier comprises an LF layer that blocks EM radiation at least at low frequencies, laminated to a textile support layer that reduces stress cracking of the LF layer and prevents widening of any cracks that do form. Embodiments further comprise an HF layer that blocks EM radiation at high frequencies, such as a metallized polymer film and/or an elastomer layer filled with conductive particles. The LF layer can be foil, mesh, or electroless metallization of the support textile or of another textile. A thermal insulation layer can be included. A topcoat can block UV, and primer layers can resist moisture. Barriers can be joined to each other and/or to adjacent structures by lanyards, webbing, sewing, soft connections, and/or flex joints formed by adhesively attached metallized textiles or films.
(FR)
Une barrière électromagnétique flexible pliable atténue un rayonnement électromagnétique d'au moins 20 dB de 1 GHz à 30 GHz. La barrière comprend une couche LF qui bloque le rayonnement EM au moins à basses fréquences, stratifiée sur une couche de support textile qui réduit la fissuration sous contrainte de la couche LF et empêche l'élargissement de toutes fissures qui se forment. Des modes de réalisation comprennent en outre une couche HF qui bloque le rayonnement EM à des fréquences élevées, telles qu'un film polymère métallisé et/ou une couche élastomère chargée de particules conductrices. La couche LF peut être une feuille, un maillage ou une métallisation autocatalytique du textile support ou d'un autre textile. Une couche d'isolation thermique peut être incluse. Une couche de finition peut bloquer les UV, et les couches d'apprêt peuvent résister à l'humidité. Des barrières peuvent être jointes l'une à l'autre et/ou à des structures adjacentes par des lanyards, une sangle, une couture, des connexions souples et/ou des joints flexibles formés par des textiles ou films métallisés fixés de manière adhésive.
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