Job Description:

• 1) Operates extruders and calender mill to remove moisture from butyl rubber crumbs: Presses buttons on control panel to start conveyors that feed rubber crumbs from drier through extruder and into hot mill.

• 2) Opens breech-lock head on extruder, using wrenches.

• 3) Removes foreign matter from equipment, using hot hoe and wooden tamper.

• 4) Turns handwheel to adjust space between rollers on hot mill to remove moisture and to regulate thickness of product on rollers.

• 5) Observes color and surface characteristics of rubber to determine degree of dryness.

• 6) Turns valves on steam lines to maintain temperatures.

• 7) Turns handwheels to adjust mill knives.

• 8) Cuts samples of product for laboratory tests and cleans undried rubber from rollers for remilling, using knife.

• 9) Inspects machinery for lubrication and to detect mechanical malfunction.