A professional who tends machines that draw out (stretch) continuous synthetic fiber filaments to impart strength and flexibility and combine filaments into tow. Responsibilities include:

• Positions can of filaments at machine, places bobbins of filament on spindle and threads filament through rolls, pins, traveler, and onto takeup bobbin or into can, or threads filament directly from spinning machine.
• Opens valve to admit steam to heat rolls.
• Inspects tow for conformance to standards.
• Doffs machine when bobbins or cans are full or when knots, breaks, or tangles occur in filament.
• May tend tandem units that crimp and dry tow preparatory to cutting tow into staple lengths.