PROCESS OF PREPARING LENSES

A process of preparing a lens 1 uses a de-blocking step to remove the lens 1 from a wax mount 7. In the de-blocking step the wax 7 is only partially dissolved so that the lens remains associated with the wax but can be easily removed therefrom. For the de-blocking step, the wax is treated with a ter...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TOMNEY, JOHN, SIDHU, JOTINDERPAL, SINGH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS POLISHING PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A process of preparing a lens 1 uses a de-blocking step to remove the lens 1 from a wax mount 7. In the de-blocking step the wax 7 is only partially dissolved so that the lens remains associated with the wax but can be easily removed therefrom. For the de-blocking step, the wax is treated with a terpene under conditions of agitation.