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Title:
ELECTRET SHEET
Document Type and Number:
WIPO Patent Application WO/2017/135457
Kind Code:
A1
Abstract:
The present invention provides an electret sheet with which excellent piezoelectricity can be achieved even by means of light stress. Since this electret sheet is characterized by including a charged porous sheet, wherein the compressive modulus of elasticity when deformed by compression at 25 °C is 80-300 MPa and the 50% compressive stress at 25 °C is 120-300 kPa, the electret sheet exhibits excellent piezoelectricity even when subjected to light stress, and exhibits excellent piezoelectricity even when subjected to light stress (0.5 N or less) caused by a pulse wave or respiration.

Inventors:
KATO Tetsuhiro (2-1, Hyakuyama, Shimamoto-cho, Mishima-gu, Osaka 21, 〒6180021, JP)
KAMIYA Nobuto (2-1, Hyakuyama, Shimamoto-cho, Mishima-gu, Osaka 21, 〒6180021, JP)
TSUCHIYA Masahiro (2-1, Hyakuyama, Shimamoto-cho, Mishima-gu, Osaka 21, 〒6180021, JP)
KATSURAYAMA Yuuta (2-1, Hyakuyama, Shimamoto-cho, Mishima-gu, Osaka 21, 〒6180021, JP)
SHIRASAKA Yasuyuki (2-1, Hyakuyama, Shimamoto-cho, Mishima-gu, Osaka 21, 〒6180021, JP)
Application Number:
JP2017/004122
Publication Date:
August 10, 2017
Filing Date:
February 03, 2017
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO.,LTD. (4-4 Nishitemma 2-chome, Kita-ku Osaka-sh, Osaka 65, 〒5308565, JP)
International Classes:
H01G7/02
Domestic Patent References:
WO2015137351A12015-09-17
Foreign References:
JP2014143369A2014-08-07
JPH08284063A1996-10-29
Other References:
See also references of EP 3413324A4
Attorney, Agent or Firm:
YAMAMOTO Takuya (Tokuyama Bldg.201, 21-22 Showa-cho 1-chome, Abeno-ku, Osaka-sh, Osaka 11, 〒5450011, JP)
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