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Title:
FERROELECTRIC VINYLIDENE FLUORIDE POLYMER FILM AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH11333924
Kind Code:
A
Abstract:

To provide a ferroelectric vinylidene fluoride polymer film having high residual polarity and electric field resistance and a method for producing the same.

A process wherein a ferroelectric vinyl fluoride polymer film having residual polarity of 100-130 mC/m2 and electric field resistance of 85-100 MV/m and a vinylidene fluoride polymer are dissolved to form a gelled film and this gelled film is dried to be stretched at 100-130°C under pressure and a process performing poling processing at least either one of stages before, during and after stretching are provided.


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Inventors:
KANEMOTO TETSUO
OTSU OSAMU
SHIMO YOSHIYUKI
MUTO AKIO
Application Number:
JP14579898A
Publication Date:
December 07, 1999
Filing Date:
May 27, 1998
Export Citation:
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Assignee:
NIPPON MITSUBISHI OIL CORP
International Classes:
C08J7/00; B29C48/305; B29C55/18; B29K27/12; B29L7/00; B29L31/34; (IPC1-7): B29C55/18; B29C47/14
Attorney, Agent or Firm:
Sakai Hajime



 
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