Process and apparatus for the embodiment in still a basic glass in molten state of additives to modify their physicochemical properties.

摘要

Solid particulate material such as colorant to be added to and homogenized with molten glass in a melting furnace, is deposited into a reservoir over and subjected to the hot atmosphere of the furnace and thereby melted. The molten material or additive flows continuously from the reservoir in a plurality of small filaments which fall onto a smooth inclined planar surface of heat resistant material dipping into the molten glass. On the planar surface the filaments spread out into a smoothly and downwardly flowing stream of uniform minute thickness which passes into the molten glass without turbulence and without entrainment of air bubbles. If required, additional heating means for the solid particulate additive or frit, may be provided.