Patent ID: 6760959
Filing Date: 2004-07-13
Classification: B23P,B44B,B44C,C25D,G03H,Y10T

Abstract:
A method for producing a die for use in deforming a reflective material so as to provide optically varying effects comprising the steps of:(1) engraving depressions, capable of producing optically varying effects in a reflective material, in a soft deformable metal foil which is secured to a more rigid but deformable substrate so as to form a laminated structure, such that the engraved depressions are retained in the metal foil which is depressed into the deformable substrate, (2) placing the engraved laminated structure in a metal plating bath to form a hard metal coating over the soft deformable metal foil, (3) removing the hard metal coating which has mirror images of the engraved depressions formed therein from the deformable metal foil, whereby the hard metal coating may be used as a die to form depressions in a reflective material capable of being deformed to the shape of the engraved depressions so as to provide optically varying effects.