Corning Incorporated

Terry Jay Ott

Gary Edward Merz

Allan Mark Fredholm

Douglas Clippinger Allan

Andrey V Filippov

Eric Lee Miller

Lewis Kirk Klingensmith

Olus Naili Boratav

Randy Lee Rhoads

Dale Charles Marshall

Todd Benson Fleming

Jeffrey Howard Ahrens

Christopher Michael Rhoads

Leonard R Kent

Apparatus for producing glass ribbon includes a control device configured at least periodic thermal stress compensation of the glass ribbon by independently adjusting operation of a plurality of temperature adjustment elements based on stress characteristic information at least periodically obtained from a stress sensor apparatus. In further examples, methods of producing glass include at least periodically sensing a stress characteristic of a glass ribbon and at least periodically changing a transverse temperature profile of the glass ribbon based stress characteristic information. In further examples, methods include the step of changing a transverse temperature profile of the glass ribbon only if a measured parameter is within an operating range associated with the parameter.

Apparatus and methods for producing a glass ribbon

Methods of drawing glass sheet via a downdraw process are provided. In certain aspects, the methods utilize rapid cooling below the root () of the forming apparatus (). Such rapid cooling can, for example, facilitate the use of glass having a liquidus viscosity less than about 100,000 poise. In other aspects, the methods utilize slow cooling between the viscosities of 10poises and 10poises. Such slow cooling can facilitate the production of glass substrates which exhibit low levels of compaction. In further aspects, substrates are removed from the glass sheet at elevated temperatures which can facilitate increases in the production rates of downdraw machines. In still further aspects, rapid cooling below the root, slow cooling between the viscosities of 10poises and 10poises, and/or substrate removal at elevated temperatures are combined. Such combinations can facilitate economically effective utilization of downdraw equipment.

Method of making a glass sheet using controlled cooling

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Horseheads, NY, United States of America

Terry Jay Ott