Method of making a moulded article
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United States of America Patent
Stats
-
Aug 8, 1989
Grant Date -
N/A
app pub date -
Jul 22, 1988
filing date -
Aug 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the production of moulds for making moulded articles, e.g. foundry moulds for producing castings, it is known to consolidate resin-coated granular filler in a moulding box containing a pattern to form the mould pieces. A gas such as SO.sub.2 is passed through the filler to cause it to set. However, after repeated use, resin buildings up on the pattern plate. According to the invention, the pattern is provided with a layer of silicone release agent such as siloxane which prevents resin build-up yet can be easily washed away.
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Cited Art Landscape
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