Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Composite or multiple layer
Patent
1992-11-04
1993-12-21
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Composite or multiple layer
264 22, 264 26, B29D 1100
Patent
active
052718743
ABSTRACT:
A process for molding hydrophilic contact lenses comprising the steps of providing lens forming liquid comprising hydrophilic monomer mixed with solvent and polymerizing the liquid between two mold halves. The improvement comprises substantially removing the solvent by evaporation at temperature no higher than about 100 degrees C.
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Jahnke Richard
Osipo Clodia
Lee, Jr. Warrick E.
Lowe James
Wesley-Jessen Corporation
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