Temperature control of glass ribbons during forming
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United States of America Patent
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Mar 21, 2017
Grant Date -
May 30, 2013
app pub date -
Oct 29, 2012
filing date -
Nov 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method of cooling a glass ribbon formed using a fusion draw process. The method includes forming a glass ribbon using the fusion draw process. The glass ribbon, once formed, passes vertically through a glass transition temperature region. The glass ribbon is directed through a protective plenum at least partially located in a bottom of the draw region. A gas is directed into the protective plenum and vertically along a broad surface of the glass ribbon. The gas is directed out of the protective plenum through at least one outlet slot formed through a sidewall of the protective plenum at no less than about 100 Nm3/h.
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