Electret sheet and piezoelectric sensor
AssigneeSekisui Chemical Co., Ltd.
InventorsTetsuhiro Kato, Nobuto Kamiya, Yasuyuki Shirasaka, Yuuta Katsurayama, Ryousuke Takahashi
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Abstract
The present invention provides an electret sheet that has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body. The electret sheet of the present invention has an air permeability of 10 to 1,000 sec/100 mL. Thus, the electret sheet has excellent durability against a pressing force that is repetitively applied, that is, excellent compression recovery properties, and can suppress stuffiness even when used by attaching it to the skin of a human body.
Claims8
An electret sheet having an air permeability of 10 to 1,000 sec/100 mL, and having a compression set of 20% or less during 50% compression in a thickness direction in accordance with JIS K6767.
Dependencies are inferred from the claim text.