PRODUCTION OF GLASS TUBE

摘要

PURPOSE:To produce the titled high-quality glass tube by washing a tubular gel during aging with a liq. current and removing the dirt deposited on the surface of the tubular gel. CONSTITUTION:An alcoholic soln. is injected into a molding pipe 3 wherein the tubular gel 4 produced by the sol-gel method and being aged is inserted through a pump 2 to remove the dirt deposited on the gel 4. Then the alcoholic soln. is passed through a filter 1 and circulated.