Patent ID: 9427935
Filing Date: 2016-08-30
CPC Classification: B32B,G02B,Y10T

Claim Text:
1. A three dimensional article having a high intensity retroreflective outer surface, comprising: a base layer of thermoformable plastic sheet material; a layer of retroreflective microbeads having a variation in diameter adhered to an outer surface of said base layer, and a protective sheet of transparent thermoformable sheet material overlying said layer of microbeads, wherein said protective sheet engages a top surface of some of the microbeads to form airspaces and create infrequent tangential point contact between at least a portion of said protective sheet and said some of the microbeads, wherein said base layer, layer of microbeads, and protective transparent sheet are formed into a self supporting three dimensional article having a pre-selected shape and an encapsulated bead retroreflective surface having a reflectivity of at least about 200 lux, wherein the protective sheet comprises glycol-modified polyethylene terephthalate (PETG); and wherein the protective sheet has a thickness of 20 mils to 30 mils.