METHOD FOR PRODUCING A TEMPLE AND/OR FRAME FOR SPECTACLES

Two plastic components of different hardness are injected into a single component molding tool using. Injection uses a sandwich injection principle in which a soft component is injected(7) from the ear side end(5) of the side piece(1) to fill the outer side of the tool cavity at the ear side end of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HIRSCHMANN, PETER, HERRMANN, HERBERT
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONTACT LENSES 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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Beschreibung
Zusammenfassung:	Two plastic components of different hardness are injected into a single component molding tool using. Injection uses a sandwich injection principle in which a soft component is injected(7) from the ear side end(5) of the side piece(1) to fill the outer side of the tool cavity at the ear side end of the side piece(4). A second harder component is then injected, also from the ear side end, which penetrates inside the first component and completely fills the cavity at the hinge side end(2) of the frame to form the body(4) of the side piece. Part or all of the injection tool surface is roughened by erosion, photoetching or similar process. The two components may be of different colors so that the softer end of the side-piece(1) stands out from the hinge area(2) and the side piece body(4).