Flat glass annealing lehrs
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United States of America Patent
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Aug 10, 2004
Grant Date -
N/A
app pub date -
Feb 19, 2002
filing date -
Aug 19, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Flat glass annealing lehr equipped with controlled heating and cooling means, includes pre-annealing, annealing, and post-annealing zones with heat exchange by radiation, the said zones being equipped respectively with groups of cooling-air heat exchangers situated above and/or beneath the glass ribbon. A single cooling-air intake manifold is included for groups of exchangers in the pre-annealing and annealing zones, which manifold is situated where the zones meet. A single cooling-air intake manifold for second groups of exchanges in the annealing and post-annealing zones, which manifold is situated where said zones meet.
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