Plastic Synthetic - Occupations Duties

Acetone recovery Worker Occupation

Job Duties:

• Tend equipment to recover acetone, used in acetate rayon manufacture, from vapor produced by dry spinning forming of rayon filaments
• Turn valves to admit vaporized acetone from spinning units to recovery system to maintain cooling coils in condenser at specified temperature for efficient acetone recovery
• May pump recovered acetone to storage tanks or recirculate it to mixing machines in which cellulose acetate flakes are dissolved to form spinning solution.

Aging Room Operator Occupation

Job Duties:

• Tend tanks in which viscose slurry is aged and blended for use in rayon cellophane production
• Pump slurry from mixing machines to blending aging tanks and from tanks to processing area after specified time
• Record aging time for each batch in plant log
• May tend tanks in which cellulose viscose raw material is aged, by moving controls to maintain tank temperature or room temperature at prescribed level, and be designated Ripening-Room Operator plastic-synth. .

Bath mix Operator Occupation

Job Duties:

• Tend still that purifies solvents used in processing plastics
• Screw drain valves into chemical drums lifts drum onto rack, using hoist
• Dump contaminated solvents into still and turns steam valve to vaporize impurities reclaim solvents
• Clean empty drums, using brush and solvent moves them to storage on handtruck.

Bleacher Occupation

Job Duties:

• Tend equipment that flushes rayon yarn with boiling bleach solution to remove spinning-bath residue bleach product prior to finishing
• Remove full cones, bobbins, cakes, or skeins of yarn from spinning forming machines places product on wash rack
• Turn valves to start flow of bleach water to flush yarn
• Replace empty bobbins or cones on spindles of spinning machines
• May hang skeins in tubs of bleach solution and be designated Dipper plastic-synth. or in tubs of chemicals be designated Desulfurizer, Hand plastic-synth.
• May wrap cakes of yarn in cloth to protect cakes during washing, bleaching, steaming, and drying operations or to partially dry cakes after washing [Cake Wrapper plastic-synth. ]
• May perform duties of Drier Operator plastic-synth. Iii in plants where washing, bleaching, and drying are combined into single operation
• May be designated according to article washed bleached as Bobbin Washer plastic-synth. , Cake Washer plastic-synth. , Skein Washer plastic-synth. , Staple Fiber Washer plastic-synth.
• May tend equipment that processes yarn in single operation be designated Desulfurizer, Machine plastic-synth. .

Box Tender Occupation

Job Duties:

• Patrol aisle between rayon-spinning forming winding machines to detect malfunctions
• Diagnose causes of failures
• Sets up, adjusts, repairs, or replaces units, using handtools.

Bulk sealer Operator Occupation

Job Duties:

• Tend automatic, radiant-heat bulk sealer that bonds plastic sheets for fabricating bags
• Place lifts two sheets of plastic film separated by single sheet of paper alternated with asbestos pads on piston of sealer
• Straighten disarranged sheets, using wooden paddle
• Start sealer in which plastic film is bonded as piston slowly rises through heated chamber
• Inspect samples of bonded sheets to detect machine malfunction.

Cake press Operator Occupation

Job Duties:

• Tend hydraulic presses that compress bake chipped, rolled, or slabbed plastics materials into cake molds for sheeting
• Turn valves to regulate pressures and temperatures in baking cooling presses
• Turn dial indicator arm to set press-cycle time
• Pull hopper lever to fill mold with specified weight of plastics chips
• Place platen on top of mold lifts filled mold to roller conveyor
• Push baked molds out of heated press, using bar
• Push filled molds from conveyor supply rack into baking press
• Turn valve to close press
• Observe meters gauges to verify specified temperatures, pressures, and press-cycle times.

Cake press operator Helper Occupation

Job Duties:

• Assist Cake-Press Operator plastic-synth. in compressing baking chipped, rolled, or slabbed plastics materials into cake molds for sheeting
• Position empty molds on platform scales
• Spread plastics chips evenly over mold, using spreader
• Push molds along roller conveyor from baking press to cooling press
• Push cooled molds from press onto roller conveyor
• Remove platen from mold pushes it along roller conveyor to storage rack
• Remove cake from mold trims flash, using knife
• Push empty mold along conveyor to scale
• Clean molds and presses, using knife scraper
• Perform other duties as described under Helper any industry Master Title.

Cake Wrapper Occupation

Job Duties:

• Wrap cakes of rayon yarn in cloth to protect threads during steaming, washing, and drying processes
• May perform duties of Washer plastic-synth. .

Calender roll Operator Occupation

Job Duties:

• Operate roll mill to homogenize roll plastic compounds into sheeting or slab form
• Push button to transfer plastic from mixing machine to revolving heated mill rolls
• Cuts material with knife feeds material back through rolls to obtain sheet of specified color, consistency and thickness
• Adjust slitting knives or starts automatic scraper to strip sheet from rolls
• Guide material onto conveyor belt
• Observe gauges or feels material and turns steam water valves to control temperature of rolls
• Clean rolls to prevent contamination of stocks, using wire brush, hand scraper, solvents, and airhose
• May adjust roll clearance with hand wrenches.