Die drawing process and apparatus for piezoelectric polymer film

Details Die drawing process and apparatus for piezoelectric polymer film Die drawing process and apparatus for piezoelectric polymer film

1987-11-30

1989-01-24

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 24, 264 27, 264104, 264174, 2642095, 2642884, 264346, 425113, 4251746, 4251748E, B29C 4702

Patent

active

048000485

ABSTRACT:
Apparatus and processes for preparing polymeric piezoelectric films of one or more layers or tubular products having a central wire core by drawing a suitable polymeric blank through either a flat or a conically tapered drawing die having associated electrical field producing means, to simultanelusly stretch and pole the polymeric material within the die chamber.

REFERENCES:
patent: 3275730 (1966-09-01), Feild
patent: 3290420 (1966-12-01), Orser
patent: 3417176 (1968-12-01), Anderson et al.
patent: 4427609 (1984-01-01), Broussoux et al.
patent: 4486365 (1984-12-01), Kliemann et al.
patent: 4557880 (1985-12-01), Pantelis

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