Apparatus for forming glass with edge directors and methods

An apparatus for downwardly drawing glass ribbon comprises edge directors, wherein an outer portion defining a first pair of surfaces and a second pair of surfaces. In one example, the first and second pair of surfaces of each edge director includes a glass wettability with a static contact angle wi...

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Bibliographische Detailangaben
Hauptverfasser: LEBLOND NICOLAS, EL KAHLOUT AHDI, PENG GAOZHU, WOMER KIM E, GRZESIK PAUL R
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An apparatus for downwardly drawing glass ribbon comprises edge directors, wherein an outer portion defining a first pair of surfaces and a second pair of surfaces. In one example, the first and second pair of surfaces of each edge director includes a glass wettability with a static contact angle within a range of from about 30 to about 60 degrees. In another example, the outer portion comprises a platinum alloy including from about 0.05 weight % tin to about 5 weight % tin. Methods for forming glass include the step of providing the edge director with a desired glass wettability and/or a desired platinum alloy.