Patent ID: 8927178
Filing Date: 2015-01-06
Classification: G03F,Y10T

Abstract:
1. A photoembossing process for the preparation of a polymeric relief structure comprised of a bi-layer formed of a first coating layer and a second coating layer, wherein the process comprises the steps of: a) coating a substrate with a first coating composition comprising one or more radiation-sensitive ingredients to form the first coating layer, which is polymerizable and/or crosslinkable, on the substrate, b) locally treating the first coating layer on the substrate with electromagnetic radiation having a periodic or random radiation-intensity pattern, to thereby form a latent image in the first coating layer, c) applying, without an intervening step, a second coating composition to form the second coating layer on top of the latent image of the first coating layer and thereby provide the bi-layer on the substrate, wherein the second coating composition consists of a dissolved polymer (C d) polymerizing and/or crosslinking the resulting coated bi-layer on the substrate by a heating step to thereby develop the latent image of the first coating layer.