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Abstract

Object: To provide an EMI suppression flat yarn, an EMI suppression article using the flat yarn, and a method for manufacturing the flat yarn and article that exhibit excellent flexibility, do not become cracked or rigid even when attached to curved portions, wire harnesses, or electrical cables, and enable electronic devices to be lighter, flatter, shorter, and smaller.Solution Means: An EMI suppression flat yarn including: an EMI absorbing polymer resin layer (I) capable of absorbing EMI, wherein a value of return loss (S11) as measured according to IEC-62333 is -1 dB or less over an entire range of EMI frequencies of 300 MHz to 18 GHz, and a value of transmission loss (S21) as measured according to IEC-62333 is -1 dB or less over an entire range of EMI frequencies of 300 MHz to 18 GHz; and a polymer resin layer (II) on one surface of the EMI absorbing polymer resin layer (I); or including a polymer resin layer (II) on one surface of the EMI absorbing polymer resin layer (I); and a polymer resin layer (III) on another surface of the EMI absorbing polymer resin layer (I); the EMI suppression flat yarn being formed into a fabric, knit, or braid; an EMI suppression article using the flat yarn; and a method for manufacturing the EMI suppression flat yarn and article using the flat yarn.

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First Claim