Title:
ELECTROMAGNETIC WAVE BLOCKING SHEET, ELECTROMAGNETIC WAVE BLOCKING SHEET MANUFACTURING METHOD, ELECTROMAGNETIC WAVE BLOCKING SHEET MANUFACTURING DEVICE, ELECTROMAGNETIC WAVE SHIELDING BAG, AND ELECTROMAGNETIC WAVE BLOCKING CLOTHING
Document Type and Number:
WIPO Patent Application WO/2007/119725
Kind Code:
A1
Abstract:
It is possible to manufacture at a low cost, a partial electromagnetic wave blocking
sheet (30) for allowing passing of an electromagnetic wave (G2) of frequency
of 800 MHz used by a mobile phone (53) and blocking an electromagnetic wave (G1)
of frequency of 13.56 MHz used by a non-contact IC medium (51). An all electromagnetic
wave blocking sheet (20) if formed by an aluminum layer (5) blocking electromagnetic
waves (G1, G2). When manufacturing the all electromagnetic wave blocking sheet
(20) for blocking all the electromagnetic waves, the aforementioned all electromagnetic
wave blocking sheet (20) can be used directly as a complete product of the all electromagnetic
wave blocking sheet (20). When manufacturing the partial electromagnetic
wave blocking sheet (30) of blocked electromagnetic wave selection type for
allowing passing of the electromagnetic wave (G2) of frequency of 800 MHz and
blocking the electromagnetic wave (G1) of frequency of 13.56 MHz, a plurality
of holes (31) are formed in the aforementioned all electromagnetic wave blocking
sheet (20) to serve as a complete product of the partial electromagnetic wave
blocking sheet (30).
Inventors:
ITO TOMOAKI (JP)
Application Number:
PCT/JP2007/057913
Publication Date:
October 25, 2007
Filing Date:
April 10, 2007
Export Citation:
Assignee:
ORIENT INSTR COMP CO LTD (JP)
ITO TOMOAKI (JP)
ITO TOMOAKI (JP)
International Classes:
H05K9/00; B26F1/20; H01Q15/14; A41D13/00
Foreign References:
| JP2004053466A | 2004-02-19 | |||
| JP2003124673A | 2003-04-25 | |||
| JP2003258543A | 2003-09-12 | |||
| JPS63197399A | 1988-08-16 | |||
| JPS6237418U | 1987-03-05 | |||
| JPS6237419U | 1987-03-05 | |||
| JPS6237420U | 1987-03-05 |
Attorney, Agent or Firm:
FUJITA, Takashi (10-17 Higashitenma 2-chome,Kita-ku, Osaka-shi, Osaka 44, JP)
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