A professional who tends machines that stretch synthetic fibers in sliver or tow form to control elasticity and prevent uneven stretching during subsequent processing. Responsibilities include:

• Turns knob to set air pressure control on stretch rolls according to amount of stretch specified.
• Guides sliver into feed rolls so that it passes over heating element, between stretch rolls, and drops into receiving can.
• Pieces up broken sliver and replaces empty cans.
• Doffs and weighs cans of stretched sliver.
• May tend stretch box with crimping and steam-setting attachments.