Mold for producing glittering cube-corner retroreflective sheeting

A mold that that comprises:

• (a) a base surface;
• and
• (b) a structured surface opposite the base surface, the structured surface comprising an array of cube-corner elements, which array is defined by three sets of intersecting grooves, wherein each groove set includes two or more generally parallel grooves, and at least one groove in at least one of the sets has faces of adjacent cube-corner elements arranged such that a dihedral angle located between the adjacent faces varies along the groove(s) in the set.

A mold that comprises:

• a structured surface that includes a multiplicity of discreet cube-corner elements, the cube-corner elements each including a base surface and three faces, the cube-corner elements being arranged such that the base planes do not reside in the same plane when the sheeting is laid flat.

A mold that comprises:

• (a) a base surface;
• and
• (b) a structured surface opposite the base surface, wherein the structured surface comprises an array of randomly-tilted cube-corner elements.