METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS

THERE IS DESCRIBED A METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS. AFTER POLYMERIZATION AND/OR CROSS-LINKING OF A LENS FORMING MATERIAL (P) WITHIN A MOLD CAVITY (4) OF A MOLD (1) COMPRISING FEMALE AND MALE MOLD HALVES (2, 3) TO FORM AN...

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Hauptverfasser: HEINRICH, AXEL, SEIFERLING, BERNHARD, HAGMANN, PETER
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SEIFERLING, BERNHARD
HAGMANN, PETER
description THERE IS DESCRIBED A METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS. AFTER POLYMERIZATION AND/OR CROSS-LINKING OF A LENS FORMING MATERIAL (P) WITHIN A MOLD CAVITY (4) OF A MOLD (1) COMPRISING FEMALE AND MALE MOLD HALVES (2, 3) TO FORM AN OPHTHALMIC LENS NON-POLYMERIZED AND/OR NON-CROSS-LINKED LENS FORMING MATERIAL IS FLUSHED AWAY FROM THE MOLD HALVES (2, 3) WITH A JET OF A FLUID FLUSHING MEDIUM, SUCH AS, E.G., WATER OR A SOLVENT OR AN INERT GAS. SUBSEQUENTLY THE MOLDED LENS IS DRIED. IN ACCORDANCE WITH THE INVENTION THE FLUSHING IS ACCOMPLISHED WITH THE MOLD HALVES (2, 3) STILL IN THE CLOSED POSITION. THERE IS ALSO DESCRIBED AN APPARATUS FOR CARRYING OUT THE METHOD. THE MOST ILLUSTRATIVE DRAWING IS
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subjects PERFORMING OPERATIONS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
title METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS
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