Vacuum Post-Curing Systems for Silicone Elastomers
Saving Energy and Emissions
In a vacuum post-curing system of Eberl Trocknungsanlagen GmbH in Bodenkirchen, Germany, silicone elastomers are post-cured under considerably reduced air pressure. This leads to several advantages over a conventional process: The air volume flow that needs heating is significantly smaller, which is why the entire process requires less energy than does a conventional process. In addition, the circulating air can be charged with large quantities of silicone, so that these particles can be washed out later. This allows for emissions to be reduced by 70 to 80 %.
The third great benefit of the new process is its high inherent safety. During the process, the plant is usually operated at 120 mbars pressure. With this pressure, no ignitable mixtures are formed from the volatile silicone components and air.
Translated from Kunststoffe 11/2015, p. 12
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