A professional who tends machine that crimps thermoplastic yarn to increase bulk, add elasticity, and provide yarn with a soft hand. Respnsibilities include:

• Places supply packages on spindles and threads yarn ends through guides, feed rolls, and into crimping attachments. Pulls yarn ends from stuffer boxes of crimping attachments, using wire hook, threads ends through guides, and attaches ends to takeup packages.
• Observes flow of yarn through machine to detect breaks in yarn and signal lights to detect variations in temperature of crimping attachments.
• Ties broken yarn ends by hand or with knotter and reports malfunction of machine to machine fixer.
• Stops winding unit and doffs full package.
• May wrap yarn packages in paper and pack packages in shipping containers.
• Important variables may be indicated by trade name of yarn produced.