EMI shielding fabric and fabric articles made therefrom
First Claim
1. A flexible electromagnetic shielding fabric comprising a plurality of synthetic yarns which have been previously coated with a continuous exterior silver coating wherein the silver content of the silver-coated synthetic yarn is not less than 20% by weight, and the conductivity of the silver-coated yarn is not less than 1.2 ohms/cm, said plurality of silver-coated synthetic yarns being formed into said fabric by means of a textile fabrication method such that the fabric is comprised substantially entirely of said silver coated synthetic yarns, said silver-coated synthetic yarns of said fabric being individually freely slidably movable relative to adjacent yarns within the fabric to provide flexibility, said exterior silver coating of each of said silver-coated synthetic yarns being in sliding electrical contact with the exterior coating of adjacent silver-coated synthetic yarns to provide continuous, omni-directional conductivity from yarn to yarn throughout the entire fabric.
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Accused Products
Abstract
An electromagnetic shielding fabric is formed entirely from a plurality of synthetic fiber yarns which have been previously coated with silver. The preferred yarn structure comprises silver-coated nylon yarns, although other synthetic yarns can also be used as a base for the silver-coated yarns. The silver content of the silver-coated synthetic yarn is preferably not less than 20% by weight, and the conductivity of the silver-coated yarn is preferably not less than 1.2 ohms/cm. The silver-coated synthetic yarns are preferably formed into a planar textile material by means of a warp-knitting method which interlocks all of the yarns in a continuous chain stitch. The resulting fabric is thus formed entirely of the conductive silver-coated yarns thereby providing superior conductivity and electromagnetic shielding capability.
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Citations
18 Claims
- 1. A flexible electromagnetic shielding fabric comprising a plurality of synthetic yarns which have been previously coated with a continuous exterior silver coating wherein the silver content of the silver-coated synthetic yarn is not less than 20% by weight, and the conductivity of the silver-coated yarn is not less than 1.2 ohms/cm, said plurality of silver-coated synthetic yarns being formed into said fabric by means of a textile fabrication method such that the fabric is comprised substantially entirely of said silver coated synthetic yarns, said silver-coated synthetic yarns of said fabric being individually freely slidably movable relative to adjacent yarns within the fabric to provide flexibility, said exterior silver coating of each of said silver-coated synthetic yarns being in sliding electrical contact with the exterior coating of adjacent silver-coated synthetic yarns to provide continuous, omni-directional conductivity from yarn to yarn throughout the entire fabric.
Specification
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- Resources
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Current AssigneeElectromagnetic Protection, Inc.
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Original AssigneeElectromagnetic Protection, Inc.
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InventorsChirkov, Alexander, Akopian, Vladimir
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Primary Examiner(s)WEISBERGER, RICHARD C
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Application NumberUS08/943,957Time in Patent Office746 DaysField of Search428/357, 428/361, 428/373, 428/375, 428/381, 442/132, 442/133US Class Current442/132CPC Class CodesA41D 31/26 Electrically protective, e....D02G 3/441 Yarns or threads with antis...D04B 21/16 incorporating synthetic thr...D06M 11/83 with metals; with metal-gen...D10B 2401/16 antistatic; conductiveG21F 3/02 ClothingY10T 428/29 Coated or structually defin...Y10T 428/2907 with coating or impregnationY10T 428/2929 Bicomponent, conjugate, com...Y10T 428/2933 Coated or with bond, impreg...Y10T 428/2944 Free metal in coatingY10T 442/2598 Radiation reflectiveY10T 442/2607 Radiation absorptive
