Method and equipment for the polymerization cast molding of articles, above all of lenses from hydrophilic gels

Abstract From the Canadian patent

Method of polymerization cast molding of articles above all of lenses, from hydrophilic gels and to an, equipment for performing this method. The method of polymerization cast molding of articles from hydrophilic gels, in particular of lenses, consists in introducing of a hydrophobic liquid, which is virtually immiscible with a hydrophilic polymerization mixture, into a mold with hydrophobic surface followed by a dosed hydrophilic monomer mixture, which is allowed to polymerize while the formed, drop of the polymerizing monomer mixture is pressed into the mold with a punch having the chosen hydrophobic molding surface, whereas the polymerizing monomer mixture is maintained under the …