Article retrorreflexivo with variation of color and method for producing an article retrorreflexivo with color variation

摘要

Article retrorreflexivo with variation of color and method for producing an article retrorreflexivo with color variation articles retrorreflexivos with color variation may provide features such effects DEcorativos, evidence tampering, authentication of security or position information.In some methods, the article retrorreflexivo with color variation comprises a layer of microesfera (14).And a reflective coating which is arranged in optical association with the layer of microspheres.The reflective coating includes a spacer layer (24) arranged between a first semi transparent reflective layer (22) and a second reflective layer (26).The first reflective layer unclui a layer reflxiva prepared adjacent to the layer of microspheres (TL, T2).At least one of the reflective coating includes a layer thickness is not uniform, associated with each of a pluraridade of microspheres such that the light incident on the article fromA first direction is retrorreflexitida a first color and the light incident on the article from a second direction is retrorrefletida to a second color visibly different from the first Co.R.