Patent ID: 6355190
Filing Date: 2002-03-12
Classification: B29C,B29D,B29K,B29L,Y10S

Abstract:
A method of molding an ophthalmic lens product by using a mold assembly which has a mold cavity, said lens product having a configuration corresponding to that of an ophthalmic lens or a precursor of said ophthalmic lens and being obtained by polymerizing a liquid monomer composition in said mold cavity to provide a polymer product which gives said lens product, the method comprising the steps of:preparing said mold assembly having a monomer storage space for storing said liquid monomer composition, which storage space is held in fluid communication with said mold cavity, said mold cavity of said mold assembly being formed with a circumferential opening extending along an entire circumference thereof; filling said mold cavity of said mold assembly with said liquid monomer composition such that said monomer composition is introduced into said mold cavity through said circumferential opening while said liquid monomer composition is accommodated in said monomer storage space; and polymerizing said liquid monomer composition at a temperature of 10-80Â° C. while a pressure higher than the atmospheric pressure is applied directly to a liquid surface of a mass of said liquid monomer composition accommodated in said monomer storage space.