GLASS-MELTING CRUCIBLE FOR PRODUCTION OF CONTINUOUS FIBER Russian patent published in 2003 - IPC

FIELD: production of glass fiber, particularly, designs of glass-melting crucible for production of continuous fiber by two-stage technology. SUBSTANCE: glass-melting crucible includes body with loading slot, current leads, bushing plate with bushings. Bushing height shall be at least 5 mm, and bushing lower base-to-upper base ratio is 0.4-0.8. Ratio of bushing cylindrical part diameter to bushing lower diameter is 0.6-0.9. Ratio of bushing conical part hole height to height of bushing itself is 0.25-0.6. Ratio of bushing inlet hole diameter to bushing cylindrical part diameter is 1.25-2.0. EFFECT: increased productivity and service life. 2 cl, 1 dwg