Plastic Synthetic - Occupations Duties
View related occupations duties grouped under the 'plastic synthetic' business sector.
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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.