Mold separation method and apparatus

An apparatus for separating individual contact lens mold assemblies, the assemblies each being a front curve mold half and a back curve mold half, each mold half having annular circumferential flanges, is included. The apparatus includes a device for applying steam to the back curve mold half to for...

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Bibliographic Details
Main Authors PEGRAM; STEPHEN CRAIG, MARTIN; WALLACE ANTHONY, BEATON; STEPHEN ROBERT, KINDT-LARSEN; TURE, WALKER; CRAIG WILLIAM
Format Patent
LanguageEnglish
Published 15.12.1998
Edition6
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CONTACT LENSES
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:An apparatus for separating individual contact lens mold assemblies, the assemblies each being a front curve mold half and a back curve mold half, each mold half having annular circumferential flanges, is included. The apparatus includes a device for applying steam to the back curve mold half to form a temperature gradient from the front mold half to the back mold half. The apparatus also includes a second device to pry the mold halves apart.
Bibliography:Application Number: US19940258265