Corning Incorporated

Pierre Laronze

Gilbert De Angelis

Bulent Kocatulum

Megan Aurora DeLamielleure

William Gurney Dorfeld

Mark Alan Cook

Soon-yong Choi

Laura Rose VanCott Adkins

Sara Ashley Manley

Sang-ryoun Ryu

Franck Olivier Hounkpevi

A method of reducing bubble lifetime on the free surface of a volume of molten glass contained within or flowing through a vessel including a free volume above the free surface, thereby, minimizing re-entrainment of the bubbles back into the volume of molten glass and reducing the occurrence of blisters in finished glass products.

Method for decreasing bubble lifetime on a glass melt surface

A method of controlling a flowrate of molten material at a downstream location in a glass manufacturing process can include mixing the molten material at an upstream location positioned upstream from the downstream location relative to a flow direction of the molten material with a shaft including a plurality of protrusions. The method can also include measuring a torque of the shaft, measuring a level of the molten material at the upstream location, and calculating a viscosity of the molten material at the upstream location based on the measured torque and the measured level. In addition, the method can include estimating the flowrate based on the calculated viscosity, and controlling the flowrate at the downstream location based on the estimated flowrate.

Glass manufacturing apparatus and methods

A glass forming apparatus includes a glass delivery vessel, a forming body with a forming body inlet and a downcomer () between the glass delivery vessel and the forming body. The downcomer includes a downcomer tube () with an inlet end () for receiving molten glass from the glass delivery vessel and an outlet end () for discharging molten glass to the forming body inlet. An upper heating zone () and a lower heating zone () positioned downstream from the upper heating zone () encircle the downcomer tube and a lower controlled atmosphere enclosure () is positioned around and sealed to the downcomer tube () in the lower heating zone (). The lower controlled atmosphere enclosure () includes at least one heating element () for heating molten glass flowing through the downcomer tube within the forming body inlet.

Apparatus to control glass flow into glass forming machines

Disclosed is an apparatus for conditioning molten glass. The apparatus includes a connecting tube assembly having a conduit for conveying the molten glass, the conduit including at least two flanges and a sealing member disposed between the at least two flanges around an outer peripheral region of the flanges, thereby forming an enclosed volume between an outer wall of the conduit, the at least two flanges and the sealing member. An atmosphere within the volume may be controlled such that a predetermined partial pressure of hydrogen or a predetermined partial pressure of oxygen may be maintained within the volume. A current may be established between the at least two flanges to heat the conduit.

Apparatus and method for conditioning molten glass

Disclosed is an apparatus for conditioning molten glass. The apparatus includes a connecting tube assembly having a conduit for conveying the molten glass, the conduit () including at least two flanges () and a sealing member () disposed between the at least two flanges () around an outer peripheral region of the flanges, thereby forming an enclosed volume between an outer wall () of the conduit, the at least two flanges () and the sealing member (). An atmosphere within the volume may be controlled such that a predetermined partial pressure of hydrogen or a predetermined partial pressure of oxygen may be maintained within the volume. A current may be established between the at least two flanges to heat the conduit.

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Corning, NY, United States of America

Pierre Laronze