Floated backing metal film effects on peeling electrostatic discharge

When a charged film surface which has been covered with a conductive metal foil is removed from the metal foil, an electrostatic discharge occurs between the peeled charged film surface and the metal foil. This peeling electrostatic discharge is examined, especially in relation to a back-coating effect. A dielectric film, 50-100 mu m thick, such as FEP (or PTFE) Teflon or polypropylene, whose back side was partially metallized with thin gold and which was originally used as a semitransparent electrode for UV-stimulated discharge current analysis is charged with a typical original surface charge density of 3.6-5.8*10/sup -4/ C/m/sup 2/ by needle corona through a potential control grid mesh. If a deposited gold layer is thick enough, a strong electrostatic discharge occurs close to an edge of a backing gold electrode when a charged surface is peeled off from the metal foil.<>