Title:
PREPARING PIEZOELECTRIC* ELECTRICALLY SCORCHABLE FILM
Document Type and Number:
Japanese Patent JPS5569902
Kind Code:
A
Abstract:
A piezoelectric and pyroelectric film made from a resin composition of polymer of vinylidene fluoride, which is characterized by an index of birefringence of larger than 3x10-3 and a ratio of d31/d32 of 0.3 to 3.0, and which may be prepared by further stretching a biaxially stretched film made from the above-mentioned resin composition at a temperature lower than the temperature of the biaxially stretching by more than 20 DEG C. before or at the same time of a treatment for orientation polarization of the film.
Inventors:
SASAKI TOORU
TERASAKI SHIYUUJI
SUSA TOMOO
TERASAKI SHIYUUJI
SUSA TOMOO
Application Number:
JP14373578A
Publication Date:
May 27, 1980
Filing Date:
November 21, 1978
Export Citation:
Assignee:
KUREHA CHEMICAL IND CO LTD
International Classes:
H01L41/193; C08F14/00; C08F14/22; H01B3/44; H01L37/02; H01L41/45; (IPC1-7): C08F14/22; H01B3/30; H01L41/18