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Fusion draw apparatus and method of making a glass ribbon

A technology of fusion drawing and glass ribbon, which is applied in the field of manufacturing glass ribbon, can solve the problems of glass ribbon formation defects, glass deposit shedding, and reducing the surface wettability of edge guides, etc.

Pending Publication Date: 2020-01-03
CORNING INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, excessive cooling of the molten material in contact with the surface of the edge director may undesirably cause the molten material to devitrify as glass deposits on the surface of the edge director
If allowed to form, these glass deposits may periodically break off and form defects in the glass ribbon
In addition, these glass deposits may reduce the wettability of the edge director surfaces in contact with the molten material, thereby causing the molten material to escape from the edge director prematurely
Premature escape of molten material from the edge director can degrade the fusion quality of the outer edge of the glass ribbon and cause undesired variations in glass ribbon width

Method used

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  • Fusion draw apparatus and method of making a glass ribbon
  • Fusion draw apparatus and method of making a glass ribbon
  • Fusion draw apparatus and method of making a glass ribbon

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Embodiment Construction

[0040] Embodiments will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments are shown. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0041] It should be understood that the specific embodiments described herein are intended to be exemplary, and therefore not restrictive. The present disclosure relates to apparatus and methods for forming glass ribbons. The glass flakes can then be separated from the glass ribbon and used in various applications. For example, glass sheets subsequently separated from the formed glass ribbon may be suitable for further processing into desired display applications. Glass sheets can be used in a wide range of display applications, including liquid crystal displays (LCDs), electropho...

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Abstract

An apparatus for making a glass ribbon can include a heating plane including a heat footprint facing the surface of an edge director. A projection of the heat footprint in a resultant direction of theheating plane within the heat footprint can intersect the surface of the edge director. In further embodiments, a fusion draw method of making a glass ribbon can include radiating heat within a heatfootprint of a heating plane toward a surface of an edge director. At least a portion of the heating plane within the heat footprint can face the surface of the edge director so that the surface of the edge director is intersected with heat radiating from the heat footprint of the heating plane.

Description

[0001] This application claims the benefit of priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 488,921, filed April 24, 2017, which is based on the contents of that application and is incorporated herein by reference in its entirety. technical field [0002] The present disclosure relates generally to fusion draw apparatus and methods, and more particularly, to fusion draw apparatus including a heating surface for heating an edge director and a method of manufacturing a glass ribbon including heating the edge director. Background technique [0003] It is known to fuse drawn molten material from the root of a forming wedge into a glass ribbon. It is also known to equip forming wedges with edge guides in order to minimize attenuation of the glass ribbon width. However, excessive cooling of the molten material in contact with the surface of the edge director may undesirably cause the molten material to crystallize as glass deposits on the surface of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B17/06
CPCC03B17/067C03B17/064
Inventor F·科波拉R·德里亚V·Y·戈尔雅汀S·R·马卡姆J·A·帕斯摩尔
Owner CORNING INC
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