logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9233517 B1

PDFFull Text
Date of Patent:
Jan. 12, 2016

Filed:

Jul. 22, 2010

Electromagnetic shielding sheet

Applicants:

Kazufumi Kato, Tokyo, JP;

Kazuaki Shikata, Tokyo, JP;

Rumina Obi, Tokyo, JP;

Ikuo Ueno, Tokyo, JP;

Inventors:

Kazufumi Kato, Tokyo, JP;

Kazuaki Shikata, Tokyo, JP;

Rumina Obi, Tokyo, JP;

Ikuo Ueno, Tokyo, JP;

Assignee:

ASAHI KASEI FIBERS CORPORATION, Osaka-Shi, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.

Primary Examiner:

Jennifer A Steele

Int. Cl.
CPC ...
B32B 5/26 (2006.01); B32B 5/02 (2006.01); D06M 11/83 (2006.01); D04H 3/14 (2012.01); H05K 9/00 (2006.01); D06M 17/00 (2006.01); D04H 5/06 (2006.01); D06M 101/32 (2006.01);
U.S. Cl.
CPC ...
B32B 5/022 (2013.01); B32B 5/26 (2013.01); D04H 3/14 (2013.01); D04H 5/06 (2013.01); D06M 11/83 (2013.01); D06M 17/00 (2013.01); H05K 9/0084 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/20 (2013.01); B32B 2250/40 (2013.01); B32B 2255/02 (2013.01); B32B 2255/205 (2013.01); B32B 2262/0284 (2013.01); B32B 2305/20 (2013.01); B32B 2305/28 (2013.01); B32B 2307/202 (2013.01); B32B 2307/718 (2013.01); B32B 2457/00 (2013.01); D06M 2101/32 (2013.01); Y10T 442/657 (2015.04); Y10T 442/659 (2015.04);
Abstract

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 μm to 50 μm, the second layer is a layer of ultrafine fibers having a fiber diameter of 0.1 μm to 5.0 μm, and a metal is adhered to at least one surface of the sheet.

Find Patent Forward Citations

Loading…