Method of making plastic molds and process for cast molding...

Details Method of making plastic molds and process for cast molding... Method of making plastic molds and process for cast molding...

B - Operations, Transporting

29

C

B29C 33/40 (2006.01) B29C 33/38 (2006.01) B29C 33/42 (2006.01) B29D 11/00 (2006.01) B29C 45/00 (2006.01)

Patent

CA 2145683

An improved method for forming plastic molds for casting articles having an optical surface such as contact lenses employs a plastic tool having an optically smooth surface.

Un procédé de fabrication amélioré de moules en plastique permettant de couler des articles présentant une surface optique, tels que des verres de contact, consiste à utiliser un outil en plastique comprenant une surface optiquement lisse.

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