Method of manufacturing solid glass preforms from hollow preforms

Method of manufacturing solid glass preforms from hollow preforms

Solid glass preforms are made by externally heating a tubular preform by a plasma which is reciprocated along the hollow tube. The plasma gas consists entirely or partly of a molecular gas (N2 or O2, for example). The hollow preform is preferably rotated during collapsing.

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Bibliographische Detailangaben
Hauptverfasser: PLUIJMS, RENE A. M, DE MEIJ, JOHANNES P, SCHRANS, HUBERTUS J. E. M, DE RUITER, JACOB W
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Beschreibung
Zusammenfassung:Solid glass preforms are made by externally heating a tubular preform by a plasma which is reciprocated along the hollow tube. The plasma gas consists entirely or partly of a molecular gas (N2 or O2, for example). The hollow preform is preferably rotated during collapsing.