METHOD FOR MARKING POLYMER COMPOSITIONS CONTAINING GRAPHITE NANOPLATELETS

摘要

Polymer substrates are marked by a method in which certain graphite nanoplatelets are incorporated into the polymer composition, such as a coating or plastic article, prior to marking the composition by exposing selected portions of the substrate to a heat source, typically a laser. Additional pigments may also be present allowing for the production of a variety of different types of markings.