B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 11/00 (2006.01) B29B 11/00 (2006.01) B29C 33/38 (2006.01) B29C 33/44 (2006.01) B29C 37/00 (2006.01) B29C 39/02 (2006.01) B29C 39/26 (2006.01) B29C 39/36 (2006.01) B29C 59/00 (2006.01) B29D 11/02 (2006.01) G02B 3/00 (2006.01) G02C 7/04 (2006.01) G02C 13/00 (2006.01)
Patent
CA 2137765
In a process for the manufacture of contact lenses, a polymerisable contact lens material is dispensed into a mould half (1) and the mould is subsequently closed by means of the second mould half (2). The material located between the two mould halves in the moulding cavity (12) is then polymerised, thus forming an as yet unhydrated contact lens (CL). The moulding surface of one of the two mould halves (1,2) is pre-treated, before use, in a region (20) outside the optically active zone of the contact lens (CL) in such a manner that, when the mould is opened, the contact lens (CL) adheres to the pre-treated mould half.
Boneberger Karlheinz
Haase Lothar
Schafer Horst
Steffan Werner
Zang Peter
Fetherstonhaugh & Co.
Novartis Ag
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