APPARATUS AND METHOD FOR MANUFACTURING GLASS TUBE

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and method for manufacturing a glass tube formed so as to easily remove molten glass dropped and deposited to the bottom surface of a glass tube outlet or a dew-condensed deposit, etc.SOLUTION: The apparatus for manufacturing a glass tube 10 includes a muffle furnace 4 and a sleeve 2 arranged in the muffle furnace 4 and has molten glass supplied onto the sleeve 2 and pulled from the tip of the sleeve 2. The muffle furnace 4 includes a glass tube outlet 4B for pulling a glass tube G, and a cooling plate 11 that can be cooled with a refrigerant is provided in a bottom forming the lower surface of the glass tube outlet 4B.SELECTED DRAWING: Figure 2