Title:
ELECTROMAGNETIC WAVE ABSORBING SHEET AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/130627
Kind Code:
A1
Abstract:
[Problem] To provide an electromagnetic wave absorbing sheet which can be made thinner. [Solution] The method for producing an electromagnetic wave absorbing sheet capable of absorbing an electromagnetic wave comprises the step of processing conductive carbon filler, insulating filler, and fiber into wet-laid paper to obtain a paper absorption layer. This allows an excellent electromagnetic wave absorbing effect to be demonstrated. This method thereby is capable of providing an electromagnetic wave absorbing sheet which can feature an increased holding amount for carbon filler through the use of insulating filler having a high specific surface area and which is thinner than a conductive electromagnetic wave absorbing sheet designed to have a thickness of 1/4 the wavelength.
Inventors:
YUMOTO AKIRA (JP)
TEZUKA YOSHIKI (JP)
TEZUKA YOSHIKI (JP)
Application Number:
PCT/JP2018/025770
Publication Date:
July 04, 2019
Filing Date:
July 06, 2018
Export Citation:
Assignee:
AWA PAPER & TECH COMPANY INC (JP)
International Classes:
H05K9/00; D21H11/18; D21H13/50; D21H15/02
Foreign References:
| JP2009076620A | 2009-04-09 | |||
| JP2008277363A | 2008-11-13 | |||
| JP2015192073A | 2015-11-02 |
Attorney, Agent or Firm:
TOYOSU Yasushi et al. (JP)
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