Immerse plastic sheets into tanks containing heated caustic solutions.
What does a Caustic Operator do?
Immerses plastics sheets into tank containing heated caustic solution to impart finish to sheet surface: Places sheets into tank. Tests water temperature and solution concentration, using thermometer and hydrometer. Turns steam valve to regulate temperature and adds water or caustic solution to maintain specified concentration of solution. Removes sheets from tank after specified time and places them in rinse tub or under water spray. Stacks rinsed sheets on absorbent cardboard preparatory to drying and inspection.