List of Career Duties Under Plastic Synthetic Business Sector

HOME | LIST OF CAREER DUTIES UNDER PLASTIC SYNTHETIC BUSINESS SECTOR

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.

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. .

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.

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. .

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

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.

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.

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.

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

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.

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