Method of making glittering cube-corner retroreflective sheeting

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...

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264 27, 264320, B29D 1100

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active

057701245

ABSTRACT:
A method of making a glittering cube-corner sheeting, which method includes: (a) providing a first retroreflective sheeting that includes an array of cube-corner elements arranged in a repeating pattern; and (b) exposing the first retroreflective sheeting to heat, pressure, or a combination thereof to produce a second retroreflective sheeting that comprises an array of cube-corner elements that are randomly tilted; or which method may comprise: (a) providing a mold that has a structured surface that includes a multiplicity of cube-comer elements, the cube-corner elements each including a base plane 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; and (b) forming a cube-corner sheeting from the mold.

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