Apparatus and method for producing center gated lens molds...

Details Apparatus and method for producing center gated lens molds... Apparatus and method for producing center gated lens molds...

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B29C 33/00 (2006.01) B29C 45/17 (2006.01) B29C 45/18 (2006.01) B29C 45/26 (2006.01) B29C 45/27 (2006.01) C08G 18/72 (2006.01) C08L 75/04 (2006.01) C09D 175/00 (2006.01)

Patent

CA 2196962

A method and apparatus for the manufacture of lens molds used in the formation of optical contact lenses, the apparatus comprising a center gate aligned on the central axis of the lens mold cavity for delivery of the melt polymer in an axisymmetrical manner. The methodology produces lens molds of extremely precise dimensions as measured against lens molds produced with side gated technology.

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