Importance

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Abstract

By means of this invention electrical resonant circuits, specifically resonance labels having a capacitor and a coil on a dielectric are produced for reliable deactivation by means of an electrical discharge between the capacitor surfaces. Heretofore aluminum threads produced from the material of the capacitor surfaces is not supported in place so that it can break with handling and vibration and cause reactivated of the resonant circuit leading to a false alarm in the safety system. According to this method a plurality of conductive bodies of a size in the micron range, e.g. copper dust is introduced in the dielectric so that a spark from discharge of a capacitor will cause an electrically conducting connection between the capacitor surfaces, which is embedded in a thread like shape in the dielectric. By using copper dust, an alloy is formed with the aluminum which evaporates during the spark discharge such that the thread produced has a substantially larger ductility than pure aluminum.

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First Claim