A method for processing exposed holograms to enhance their thermal stability and enable them to withstand a windshield lamination process is disclosed. The secondary processing procedure entails an optional step of applying a moisture barrier to the hologram, followed by heat stabilizing the hologram...http://www.google.de/patents/US5138469?utm_source=gb-gplus-sharePatent US5138469 - Preparation of photosensitive material to withstand a lamination process
