Patent ID: 8241536
Filing Date: 2012-08-14
Classification: B29C,B29D,B29K,B29L

Abstract:
1. A process for making a coated optical article free of visible fining lines by application of a single monolayer coating, wherein the process comprises: (i) providing an optical article having at least one fined but unpolished geometrically defined main face having a root mean square profile R (ii) providing a mold part having an internal and external surface; (iii) depositing on said main face of said optical article or on the internal surface of the mold part a requisite amount of a liquid curable coating composition; (iv) moving relatively to each other the optical article and the mold part to either bring the coating composition into contact with the main face of the optical article or into contact with the internal surface of the mold part; (v) applying pressure to the mold part to spread the liquid curable coating composition on said main face and form a uniform liquid coating composition layer onto the main face, wherein the pressure exerted onto the mold part ranges from 10 kPa to 350 kPa and is maintained at least up to the gelling of the liquid coating composition layer; (vi) curing the liquid coating composition layer; (vii) withdrawing the mold part; and (viii) recovering an optical article free of visible fining lines and having said at least one fined but unpolished geometrically defined main face coated with a single monolayer coating having a thickness of less than 5 μm.