A professional who supervises and coordinates activities of workers engaged in mixing plastic resins, color pigments, and additives for use in machine molding of plastic items. Respnsibilities include:

• Reviews production records for each molding machine to determine amount of plastic mixture used and whether amount available is sufficient to fill existing orders, and notifies production control personnel of findings.
• Determines amount of virgin plastic needed to combine with reground material and reformulates mixing order to meet production requirements.
• Examines samples of rejected products to determine cause of defect and recommends corrective action, based on knowledge of ingredients and molding machine operations.
• Trains new employees.
• Confers with management and subordinates to resolve production problems.
• Performs other duties as described under supervisor master title.