Corona discharge poling process
AssigneePennwalt Corporation
InventorPeter F. Radice
Life of this patent
Estimating the term…
Abstract
The present invention provides a process for preparing piezoelectric film using a corona discharge device wherein a multi-layer of pellicles, of which at least one or more is a piezoelectric sensitive film and at least one other of the multi-layer is a companion pellicle (i.e. a pellicle with a conductance no less than that of the piezoelectric sensitive pellicle when the conductance is measured under the poling conditions of the corona discharge and in the direction of the discharge field), is subjected to a corona discharge between a pair of electrodes of which at least one such electrode has a textured surface.
Claims18
A process for poling polymer pellicles to impart piezoelectric activity to the pellicles comprising subjecting a multi-layer of pellicles of which at least one is a PES pellicle and at least one other of which is a companion pellicle to a corona discharge between a pair of electrodes of which at least one such electrode has a textured surface.
Dependencies are inferred from the claim text.