Patent ID: 6951621
Filing Date: 2005-10-04
Classification: G08B,H05K,Y10T

Abstract:
1. A method for forming a product sensor which includes a fuse, which sensor is formed on a polymeric film substrate, the product sensor having at least one electric circuit comprising at least one capacitor, at least one coil in electrical circuit with the fuse, and at least part of the electric circuit which includes the fuse is formed by applying a first conductive layer on the product sensor by evaporation; at least at the location of the electric circuit, wherein the production of the product sensor comprises: depositing by evaporation a first conductive layer on at least one surface of the polymeric film substrate; applying an etching resist on the first conductive layer at locations of portions of the electric circuit; applying a fuse mask on the first conductive layer at the location of one or more fuses to be made in the product sensor; etching parts of the first conductive layer which are not under the etching resist and the fuse mask to provide a fuse to remove the parts of the first conductive layer not under the etching resist and the fuse mask; removing the etching resist; and depositing a second conductive layer on parts of the first conductive layer which remain after the etching process.