Patent ID: 7713590

Claim:
A method of applying a photoluminescent coating to a substrate, comprising: a. providing a retroreflective opaque dry powder; b. electrically grounding said substrate; c. applying an electrostatic charge to said retroreflective opaque dry powder and spraying said retroreflective opaque dry powder onto said substrate to form a base layer thereon; d. heating said substrate with said base layer to cure said base layer to said substrate; e. providing a photoluminescent dry powder including a photoluminescent pigment and a resin; f. preheating and electrically grounding said substrate; g. applying an electrostatic charge to said photoluminescent dry powder and spraying said photoluminescent dry powder onto said preheated and electrically grounded substrate to form a photoluminescent layer over said base layer; h. heating said substrate to cure said photoluminescent layer to said base layer of said substrate.