Patent ID: 8740498
Filing Date: 2014-06-03
Classification: E01C,E01F,G02B

Abstract:
1. A method for forming a retroreflective marking on pavement by traversing a marking apparatus along the pavement in a selected marking direction, comprising the steps of: a) spraying an epoxy resin onto said pavement to create a fresh non-polymerized epoxy layer; b) depositing high-reflectivity microcrystalline ceramic particles, coarse sieve-size glass beads, and fine sieve-size glass beads onto said fresh epoxy layer sequentially in a single pass of a multiple-distributor deposition apparatus moving at about 6 miles per hour with distributors of said multiple-distributor deposition apparatus spaced from one another by approximately 8 to 10 inches, and c) allowing said epoxy layer to become polymerized, wherein said retroreflective marking exhibits a reflectivity level of 500 cd/lx/m