Electromechanical film and procedure for manufacturing same

Details Electromechanical film and procedure for manufacturing same Electromechanical film and procedure for manufacturing same

1984-11-20

1987-03-31

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Electrets

310334, 381116, 29594, 381191, G11C 1302, H01L 4108

Patent

active

046545468

ABSTRACT:
The present invention concerns a dielectric film for converting electromagnetic or electrostatic energy into mechanical work, and a procedure for manufacturing the film. The film of the invention consists of a homogeneous film layer foamed to be of full-cell type and which has been oriented by stretching it in two directions and coated at least in part on one side or on both sides with an electrically conductive layer. The film is manufactured by extruding the plastic which has been made to be foamable, into tubular shape, performing intermediate cooling of the tube and reheating it, expanding the heated tube in two directions, metallizing the outer surfaces and cutting the tube open to become a film.

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