Slot die coating process

摘要

The present invention relates to a process for applying an optical coating to a substrate comprising the steps of (a) preparing an optical coating formulation comprising a solvent component and a film forming component; (b) using a die coater to form a coated substrate by applying the optical coating to a substrate, where the applied optical coating forms a wet film thereon having a thickness from 8μm to 100μm; (c) drying the coated substrate, where the coated substrate is in a substantially horizontal plane thereby converting the wet film to a dry film having a thickness of less than 1μm. The optical coating formulation comprises greater than 0.3 wt% to no more than 10 wt% solids relative to the total weight of the optical coating formulation. The coated substrate may be optionally cured.