Job Description
Injection Moulding Supervisor
Department
Employment
Manufacturing / Production
Full time
Reports to
Location
Production Manager / Plant Manager
As assigned
Position Overview
The Injection Moulding Supervisor manages day-to-day injection moulding operations and ensures that production
targets, product quality, safety requirements, and delivery schedules are achieved. The position supervises
operators and technicians, monitors machine performance, controls process parameters, and resolves production
issues.
Key Responsibilities
Supervise injection moulding machines, operators, technicians, and material handlers.
Plan and allocate manpower according to the production schedule.
¢ Ensure correct machine setup for mould changes, start-up, shutdown, and production runs.
¢ Monitor cycle time, output, downtime, rejection, scrap, and material consumption.
¢ Verify that moulded components meet approved drawings, samples, and quality standards.
¢ Identify and correct defects such as short moulding, sink marks, flash, burn marks, warpage, and colour variation.
¢ Optimise machine parameters to improve productivity, quality, and process stability.
¢ Coordinate mould changeovers and obtain first-off sample approval before mass production.
¢ Coordinate with Quality, Maintenance, Tool Room, Stores, and Production Planning teams.
¢ Lead root-cause analysis and corrective actions for breakdowns, defects, and customer complaints.
¢ Ensure preventive maintenance and daily machine checks are completed.




¢ Maintain production, rejection, downtime, shift handover, and material-consumption records.
¢ Train operators on standard operating procedures, safety, 5S, quality checks, and machine operation.
¢ Enforce PPE use and compliance with workplace safety procedures.
¢ Maintain cleanliness and discipline around machines, moulds, tools, and the production area.
Qualifications and Experience
¢ Diploma or bachelors degree in Mechanical, Plastics, Polymer, Production, or a related field.
¢ Typically 38 years of injection moulding experience; supervisory or team-lead experience preferred.
¢ Experience with thermoplastic injection moulding machines and mould changeovers.
¢ Knowledge of moulding processes, machine settings, auxiliary equipment, and common moulded-part defects.
¢ Ability to read basic engineering drawings, inspection standards, and process sheets.
¢ Knowledge of 5S, Lean Manufacturing, Kaizen, and basic root-cause analysis.
¢ Familiarity with SPC, production KPIs, and quality documentation is an advantage.
Technical Skills
¢ Knowledge of injection pressure, holding pressure, back pressure, screw speed,



barrel temperature, mould
temperature, cooling time, and cycle time.
¢ Experience with hydraulic, hybrid, or electric injection moulding machines.
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¢ Understanding of hot runners, runners, gates, ejectors, cooling circuits, and mould maintenance.
¢ Ability to use vernier callipers, micrometers, gauges, weighing scales, and inspection equipment.
¢ Basic understanding of robots, pick-and-place systems, dryers, chillers, temperature controllers, and granulators.
¢ Familiarity with materials such as PP, ABS, HDPE, LDPE, nylon, PC, POM, and engineering polymers.
Key Performance Indicators
¢ Production achievement against plan.
¢ Machine utilisation and uptime.
¢ Rejection and scrap percentage.
¢ Cycle-time performance.
¢ On-time completion of production orders.
¢ Mould-changeover time.
¢ Material consumption and recovery.
¢ Internal and customer quality complaints.
¢ Safety, 5S, and SOP compliance.
Sample CV Profile
Injection Moulding Supervisor with [X] years of experience managing thermoplastic injection moulding operations,
production teams, mould changeovers, process optimisation, quality control, and preventive maintenance. Skilled
in troubleshooting moulding defects, reducing rejection and downtime, achieving production targets, and
implementing 5S, Kaizen, and root-cause corrective actions.
Document prepared for recruitment and internal role-definition use.
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📌 Production Supervisor (Chennai)
🏢 Plastocraft Automotive
📍 Chennai