A process for making molds for retroreflective sheeting and like articles includes making a substrate having a structured surface of geometric structures such as cube corner elements. The structured surface is in one embodiment partially replicated from a previous generation structured surface, and partially...http://www.google.es/patents/US6540367?utm_source=gb-gplus-sharePatente US6540367 - Structured surface articles containing geometric structures with compound faces and methods for making same
Structured surface articles containing geometric structures with compound ...
