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Method for controlling compaction

A technology of compactness and cooling rate, which is applied in the field of reducing the compaction of glass substrates, and can solve the problems of increasing drawing distance and increasing distance

Pending Publication Date: 2020-02-11
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this method works to some extent, it has the disadvantage that it may require an increased distance between the forming body and the point where the substrate is separated from the glass ribbon
In fact, increasing the draw distance to reduce compaction can limit the maximum flow rate available for a given glass forming equipment due to the physical limitations of existing facilities

Method used

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  • Method for controlling compaction
  • Method for controlling compaction
  • Method for controlling compaction

Examples

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Embodiment Construction

[0053]Embodiments of the present disclosure will be described in detail below, examples of which are illustrated in the accompanying drawings. 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.

[0054] Ranges can be expressed herein as starting from "about" one particular value, and / or ending "about" another particular value. When such a range is stated, another embodiment includes from the one particular value and / or to the other particular value. Similarly, when values ​​are expressed as approximations, by use of the antecedent "about," it will be understood that the particular value forms another embodiment. It should also be understood that the endpoints of each range are important both in relation to the other endpoints and independently of the other endpoints.

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PUM

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Abstract

A method of controlling compaction includes obtaining a plurality of sets of process conditions for a plurality of glass ribbons, measuring a compaction value for a glass sheet cut from each glass ribbon of the plurality of glass ribbons, correlating the compaction to the process conditions. The method further includes selecting a predetermined cooling curve including a plurality of cooling rates,modifying the cooling curve by varying cooling rates of the plurality of cooling rates, calculating a predicted compaction value for a glass sheet cut from a glass ribbon drawn using the modified cooling curve, and repeating the modification and predicting until compaction is minimized.

Description

[0001] Cross-References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Application Serial No. 62 / 519,347, filed June 14, 2017, which is based upon the contents of that application and is incorporated by reference in its entirety as if fully set forth below. [0003] background technical field [0004] The present disclosure relates generally to methods for reducing deformation of glass substrates, and more particularly, to minimizing compaction of glass substrates. Background technique [0005] Glass display panels in the form of liquid crystal displays (LCDs) are being used in a growing number of applications—from handheld phones to computer monitors to television monitors. These applications require glass sheets to have a pristine, defect-free surface. LCDs consist of sheets of glass sealed together to form an envelope. It is highly desirable that the glass sheets comprising these displays not change in size when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C23/00C03B17/06
CPCC03B5/08C03B5/163C03B17/00C03B17/06C03B17/067G01N33/386Y02P40/57C03C23/007C03B25/025
Inventor S·R·伯德特S·P·马达普西J·N·佩恩
Owner CORNING INC