Dimensionally accurate expanded foam casting pattern
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United States of America Patent
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-
Jan 31, 1995
Grant Date -
N/A
app pub date -
Apr 23, 1992
filing date -
Apr 23, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for heating pre-expanded foundry pattern molding beads of polystyrene or the like in a stream of hot air to reduce the vapor-forming expansion agent content for the purpose of producing more dimensionally accurate, molded foam bead casting patterns.
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Cited Art Landscape
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