Electret Charge Technique.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
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
- Electricity and Magnetism