Electret charge technique

Details Electret charge technique Electret charge technique

1978-07-20

1980-07-15

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Electric charging of objects or materials

B05C 104

Patent

active

042131685

ABSTRACT:
A dielectric tape of FEP (polyfluoroethylenepropylene) Teflon is electrostatically charged to a high level charge density using a motor driven capstan on which the tape is moved at a controlled velocity past a sponge assembly charged by a high DC voltage. The sponge assembly is wetted with a dielectric fluid mixture of methyl alcohol, ethyl alcohol and acetone. By endosmosis, a bead of fluid forms between the sponge and the FEP Teflon tape causing the fluid to be evenly distributed on the tape. An air blower directed onto the surface of the tape drys the tape as it passes by.

REFERENCES:
patent: 3835355 (1974-09-01), Tsukada
patent: 3867674 (1974-02-01), Simm
"Charging of Polymer Foils Using Liquid Contacts", Applied Physics Letter, vol. 21, No. 11, by Chudleigh, 12/172.

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