- Settore: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who controls equipment, such as spray line, oven, conveyor, and winding reel to produce transparent plastic wrapping material from prepared chemical solutions. Respnsibilities include:
* Opens valves to spray solution from bank of spray nozzles onto moving conveyor.
* Observes gauges and adjusts controls to regulate oven temperature, spray rate of solution, and conveyor speed to produce sheeting of specified thickness and quality.
* Examines sheet material and inserts marker in spooled material to indicate defective areas.
* May control operations from remote-controlled panelboard.
* May send sample piece of material to laboratory for analysis.
* May examine thickness and clarity of material, using micrometer and illuminated viewing panel.
* May operate solvent recovery unit.
Industry:Professional careers
A professional who operates jar-type grinding mill and mixing machine to produce lacquers and synthetic paints according to formulas and work order specifications. Respnsibilities include:
* Starts jar mill and portable mixer to grind and mix ingredients.
* Places ingredients, such as gums, pigments, and thinners in mill.
* Dumps coloring and lacquer ingredients according to specifications into portable mixing kettle and places kettle under mixer.
* Takes sample from batch and strains it into can.
* Uses spray gun to spray test panel.
* Heats prepared mixture with steam coil, causing wax to rise to top of solution, and then settle to bottom to be drawn off into clean tank.
* Adds required color for tinting batch to meet plant specifications.
Industry:Professional careers
A professional who operates jar-type grinding mill and mixing machine to produce lacquers and synthetic paints according to formulas and work order specifications. Respnsibilities include:
* Starts jar mill and portable mixer to grind and mix ingredients.
* Places ingredients, such as gums, pigments, and thinners in mill.
* Dumps coloring and lacquer ingredients according to specifications into portable mixing kettle and places kettle under mixer.
* Takes sample from batch and strains it into can.
* Uses spray gun to spray test panel.
* Heats prepared mixture with steam coil, causing wax to rise to top of solution, and then settle to bottom to be drawn off into clean tank.
* Adds required color for tinting batch to meet plant specifications.
Industry:Professional careers
A professional who operates machine to produce and cure latex ribbon and thread used for such items as elastic and garters. Respnsibilities include:
* Moves drums of liquid latex and coagulant to dip trays, using hoist.
* Opens petcock on drums and adjusts flow to regulate level of coagulant in trays.
* Positions number of dip belts, according to gauge of finished latex ribbon or thread, over belt spindles.
* Starts equipment to activate dip belts and conveyor system.
* Observes belts as they float on top of latex in tray and through coagulant to verify cohesion of latex to dip belts.
* Observes separation of coagulated ribbon or thread from bottom of dip belt to conveyor carrying ribbon or thread through rinsing and drying areas.
* Inspects ribbon and thread for such defects as holes and dried coagulant.
* Threads end of ribbon or thread through guides leading to curing drum.
* Cuts, weighs, and examines samples, to verify adherence to specifications, using scissors, scale, and gauge.
* Inspects and sharpens circular knives with stone.
* When producing thread, may be designated latex-thread-machine operator; thread-machine operator.
Industry:Professional careers
A professional who controls equipment to filter, transfer, and remove bubbles from viscose fluid used in manufacturing rayon or cellophane. Respnsibilities include:
* Turns valves to transfer viscose from mixing station to filter presses that remove impurities and to vacuum tanks that remove air bubbles.
* Observes gauges and adjusts controls to maintain specified temperature, pressure, and feed rate in equipment and pipes.
* May tend tanks to age viscose for specified time before transfer to casting (forming) units.
* May record aging time, viscose output, and gauge readings.
* May be designated viscose-cellar attendant in plants producing rayon by viscose process.
Industry:Professional careers
A professional who operates extruders and calender mill to remove moisture from butyl rubber crumbs. Respnsibilities include:
* Presses buttons on control panel to start conveyors that feed rubber crumbs from drier through extruder and into hot mill.
* Opens breech-lock head on extruder, using wrenches.
* Removes foreign matter from equipment, using hot hoe and wooden tamper.
* Turns handwheel to adjust space between rollers on hot mill to remove moisture and to regulate thickness of product on rollers.
* Observes color and surface characteristics of rubber to determine degree of dryness.
* Turns valves on steam lines to maintain temperatures.
* Turns handwheels to adjust mill knives.
* Cuts samples of product for laboratory tests and cleans undried rubber from rollers for remilling, using knife.
* Inspects machinery for lubrication and to detect mechanical malfunction.
Industry:Professional careers
A professional who operates combination calendering mill and vulcanizing conveyor that rolls out and cures, in continuous process, sponge rubber sheeting for use gaskets, underlay for carpeting, and insulation for footwear. Respnsibilities include:
* Turns handwheels and capstan screws to set distance between calender rolls and between vulcanizing plates and conveyor, verifying setting with feeler gauges.
* Operates calender to produce uncured sponge rubber sheeting.
* Turns rheostat for each vulcanizing plate to designated temperature setting and observes heat indicators.
* Starts conveyor, when plates reach specified heat, to vulcanize calendered sheeting beneath them.
* Replaces worn canvas conveyor belts between calendering and vulcanizing units, using portable vulcanizing machine to bond ends.
* Adjusts tension bars that tighten belt, using wrenches.
* Mounts roll of underlay backing cloth into cradles, using electric chain hoist.
* Threads backing cloth (netting) through cement trough and series of rollers that press it onto sponge rubber sheeting, and through drying oven.
* Adjusts width between calender rolls to increase or decrease thickness of sheeting and adjusts temperatures of vulcanizing plates when there are deviations from specifications in thickness or curing.
* May operate vulcanizing conveyor without warming mill, calender, or vulcanizing plates that draws, by vacuum pressure, uncured sponge rubber between links of wire mesh that expands and vulcanizes rubber as it passes through heated oven to produce waffle-imprinted underlay on precalendered stocks and be known as Rug-Underlay-Machine Operator.
Industry:Professional careers
A professional who operates water still, mixer, clarifier, and filtering unit to process liquid and powder ingredients into sterile medications. Respnsibilities include:
* Turns valves to admit deionized water and steam to still and circulate water through condenser for distillation.
* Pours metered or measured amount of distilled water into container, weighs out or dumps preweighed ingredients into water and lowers mixing head into solution to dissolve and mix ingredients.
* Turns dial on pH meter to standard acidity reading, immerses electrodes in beaker of buffer solution, and adds acid or alkali, as specified, to achieve prescribed acidity.
* Pours mixture into clarifier unit to remove insoluble material.
* Immerses bacteriological filtering candle in clarified solution, connects tubing between candle and collecting vessel, and starts vacuum pump to draw solution through candle pores to remove bacteria and spores and produce sterile product.
* May set up ampoule- or vial-filling machine.
* May operate equipment to produce sterile, deionized water used in sterile medications.
* May sterilize equipment, using autoclave and disinfectant solution.
Industry:Professional careers
A professional who operates water still, mixer, clarifier, and filtering unit to process liquid and powder ingredients into sterile medications. Respnsibilities include:
* Turns valves to admit deionized water and steam to still and circulate water through condenser for distillation.
* Pours metered or measured amount of distilled water into container, weighs out or dumps preweighed ingredients into water and lowers mixing head into solution to dissolve and mix ingredients.
* Turns dial on pH meter to standard acidity reading, immerses electrodes in beaker of buffer solution, and adds acid or alkali, as specified, to achieve prescribed acidity.
* Pours mixture into clarifier unit to remove insoluble material.
* Immerses bacteriological filtering candle in clarified solution, connects tubing between candle and collecting vessel, and starts vacuum pump to draw solution through candle pores to remove bacteria and spores and produce sterile product.
* May set up ampoule- or vial-filling machine.
* May operate equipment to produce sterile, deionized water used in sterile medications.
* May sterilize equipment, using autoclave and disinfectant solution.
Industry:Professional careers
A professional who operates machine to stretch plastic sheets to specified dimensions. Respnsibilities include:
* Positions sheet in machine and clamps hydraulic rams to edges of sheet.
* Sets temperature control and starts blowers to heat sheet.
* Adjusts stops on hydraulic rams (pullers) and starts machine to stretch sheet to specified dimensions.
* Removes sheet and places it on table or rack to cool.
* May cut stretched sheet into pieces of specified size, using bandsaw.
* May inspect stretched sheet against grid board to locate distortion-free areas.
Industry:Professional careers
