Verbesserter Sicherheitsfaden und Verfahren und Vorrichtung zum Aufbringen desselben auf ein Substrat

摘要

Applied to a substrate such as paper banknotes is a thread (12) which includes a PET carrier layer (14) with release layers (20, 34) on both surfaces (16, 18 respectively) of the carrier layer, and a metallic layer (22) outward of one release layer. An adhesive layer (26) lies outward of the metallic layer. When a substrate (30) is brought into contact with the adhesive layer, the result is to bond the metallic layer to the substrate. Following this, the PET carrier layer is peeled away, leaving the metallic layer bonded to the substrate. An apparatus for accomplishing these steps includes means for bringing the substrate into contact with the adhesive layer, and means for peeling the PET carrier layer away so that it separates from the metallic layer, at the adjacent release layer.