Resin-coated sand
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United States of America Patent
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Sep 11, 2007
Grant Date -
Oct 7, 2004
app pub date -
Mar 31, 2004
filing date -
Apr 1, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The resin-coated sand is produced by coating the surface of a refractory granular aggregate with a thermosetting resin and a thermoplastic resin. When using this resin-coated sand, a mold with a less rough surface can be produced by a RP molding apparatus. When using this mold made of the resin-coated sand, a casting with fewer gas defects can be produced.
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