Reports To: Shift Supervisor / Head of Department

​1. Job Purpose

​Operate and monitor W&H 3-layer blown film co-extrusion lines to meet production targets while ensuring film quality, layer accuracy, material efficiency, and workplace safety.

​2. Key Responsibilities

​Line Operation: Set up, start, run, and shut down W&H 3-layer extrusion lines per approved SOPs and job specs.

​Layer & Resin Control: Manage Extruders A, B, and C dosing systems to maintain correct skin/core resin ratios and blend percentages.

​Process Optimization: Adjust temperatures, screw speeds, BUR, IBC/air ring settings, and haul-off speeds to maintain bubble stability and even gauge.

​Quality & Changeover: Conduct regular checks for thickness, width, corona treatment, and roll profile; perform resin/color changeovers efficiently to minimize scrap.

​ Inspect die/air ring cleanliness, report equipment faults, and maintain accurate shift logbooks.

​3. Key Performance Indicators (KPIs)

​Production output (kg/hr) vs. targets

​Scrap and purge waste percentage reduction

​Downtime and changeover efficiency

​Gauge and specification compliance

​Safety and 5S housekeeping standards

​4. Required Competencies

​Experience: 5+ years operating 3-layer PE blown film lines (W&H machinery experience preferred).

​Technical Skills: Good understanding of LDPE/LLDPE/HDPE resins, co-extrusion , gravimetric dosing, and automatic thickness control.

​Troubleshooting: Ability to identify and resolve defects like gauge variation, gel particle, wrinkles, and bubble instability.