Accession Number : ADD007442

Title :   Electret Charge Technique.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Garbett,Matthew G

Report Date : 15 Jul 1980

Pagination or Media Count : 5

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. (Author)

Descriptors :   *Patents, *Electrets, *Tapes, *Tetrafluoroethylene resins, Inventions, Dielectrics, Electrostatic charge

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE