DRAWING HEAD FOR PRODUCING A GLASS TUBE, APPARATUS FOR PRODUCING A GLASS TUBE, PROCESS FOR PRODUCING A GLASS TUBE VIA A DRAWING PROCESS, AND GLASS TUBE

Abstract: a drawing head for producing a glass tube includes: a glass inlet; and a glass outlet, the drawing head having a total height h and an inner diameter d, wherein: (a) the drawing head includes a head overflow, a central axis of the head overflow being arranged vertically above a central axis of the glass inlet by a vertical distance v, a ratio v/h being at least 0.05/1; (b) the drawing head having a vertical distance c between the glass outlet and a central axis of the glass inlet, wherein a ratio c/h is from 0.2/1 to 0.8/1, from 0.4/1 to 0.6/1, or from 0.2/1 to 0.4/1; or (c) the drawing head having a filling height hof the glass melt between a glass melt level and a central axis of the glass inlet when in operation, wherein a ratio h/h is at least 0.1/1 or at least 0.2/1.

Inventor(s): Volker Trinks, Ulrich Lange

CPC Classification: C03B17/04 (MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES)

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