Methods and apparatus for reducing heat loss from an edge director
AssigneeCorning Incorporated
InventorsAhdi El Kahlout, Soongyup Jason Lee, Shinya Sakamoto
Life of this patent
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Abstract
An apparatus for making a glass sheet includes a forming wedge with a pair of inclined forming surface portions converging along a downstream direction to form a root. The apparatus further includes an edge director intersecting with at least one of the pair of downwardly inclined forming surface portions, and a thermal shield configured to reduce heat loss from the edge director. Methods are also provided for reducing heat loss from the edge director with a thermal shield.
Claims20
A fusion draw method of making a glass sheet comprising the steps of:
- flowing molten glass over a pair of downwardly inclined forming surface portions of a forming wedge, the downwardly inclined forming surface portions converging along a downstream direction to form a root;
- flowing the molten glass over an edge director intersecting with at least one of the pair of downwardly inclined forming surface portions;
- drawing the molten glass from the root of the forming wedge to form the glass sheet;
- and
- reducing heat loss from the edge director with a thermal shield.
A fusion draw method of making a glass sheet comprising the steps of:
- flowing molten glass over a pair of downwardly inclined forming surface portions of a forming wedge, the downwardly inclined forming surface portions converging along a downstream direction to form a root;
- flowing the molten glass over an edge director intersecting with at least one of the pair of downwardly inclined forming surface portions;
- drawing the molten glass from the root of the forming wedge to form the glass sheet;
- engaging an edge portion of the glass sheet with a pair of edge rollers positioned downstream from the root;
- and
- using a thermal shield to reduce heat loss from the edge director to the pair of edge rollers.
An apparatus for making a glass sheet comprising:
- a forming wedge including a pair of inclined forming surface portions converging along a downstream direction to form a root;
- an edge director intersecting with at least one of the pair of downwardly inclined forming surface portions;
- and
- a thermal shield configured to reduce heat loss from the edge director.
Dependencies are inferred from the claim text.