Optically variable device (ovd) images embedded within plastic strips

摘要

A method for the manufacture of a polymer strip (50) useful to secure information contained on a face of a card includes the steps of extruding a polymer resin to form an optically transparent strip and then embossing an optically variable device (32) into a first surface (34) of this optically transparent strip. A time from when the optically transparent strip exits an extruder until embossing is effective to prevent the optically transparent strip from cooling to a temperature below 120°C. Subsequent to embossing, the optically variable device (32) may be entirely or partially metalized (36). Alternatively, or in addition, to the metallization (36), security features may be formed into that first surface (34).