Asahi Kasei Fibers Corporation

Kazuaki Shikata

Kazufumi Kato

Rumina Obi

Ikuo Ueno

Disclosed is an electromagnetic shielding sheet that has a smaller increase in the thickness of a base after the formation of a metal coating film when compared with conventional electromagnetic shielding sheets, and which has excellent electromagnetic wave shielding properties despite a small amount of adhered metal. According to the present invention, the electromagnetic shielding sheet can endure metal working processes and has high electromagnetic wave shielding properties, resulting in a thin, very flexible fabric sheet. Specifically disclosed is an electromagnetic shielding sheet which is composed of a laminated non-woven fabric that has at least a first layer and a second layer, and which is characterized in that the first layer is a layer of thermoplastic synthetic fibers having a fiber diameter of 6 &#x3bc;m to 50 &#x3bc;m, the second layer is a layer of ultrafine fibers having a fiber diameter of 0.1 &#x3bc;m to 5.0 &#x3bc;m, and a metal is adhered to at least one surface of the sheet.

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Tokyo, Japan

Kazuaki Shikata