Method and apparatus for molding toric contact lenses

Details Method and apparatus for molding toric contact lenses Method and apparatus for molding toric contact lenses

B - Operations, Transporting

29

D

18/106

B29D 11/00 (2006.01) B29C 33/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1144316

NPD-1332 ABSTRACT OF THE DISCLOSURE A mold is described including at least one flexible mold member fabricated from thermoplastic polymeric materials. Desirably, the flexible mold member is placed within a circular torque ring and pressure is applied to flex the mold member into a selected toric configuration, a polymerizable mixture is added, the mold closed and the mixture is hardened into the desired lens. Lenses so produced, which may be either flexible or rigid, have at least one surface which is toric in configuration.

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