Process for cleaning parts soiled or encrusted with polyester resin
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United States of America Patent
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Dec 10, 1996
Grant Date -
N/A
app pub date -
Jan 13, 1995
filing date -
Jan 13, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process using primarily aqueous-based surfactants for cleaning machinery, tools, containers and the like to remove polyester resin residue. This process involves four stages, each having one or more steps. The first stage is a pre-wash or preliminary cleaning stage which is followed by an ultra-sonic wash stage. The third stage is a rinse stage and the fourth and last stage is for drying the parts cleaned during the previous three stages of the process. Additionally, a fifth evaporation/drying stage is periodically carried out to remove polyester resin residues from the process as solid waste.
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