Blow Moulding Process Technician

Flexicon Plastics; Avondale; On-site; NZD 60,000 - 85,000; Full time

Job summary

Flexicon Plastics in New Zealand is seeking an experienced operator to join our plastics production team. You will perform mould changes, machine setups and changeovers, and optimise extrusion blow moulding processes to deliver quality parts efficiently.

You will read technical drawings, troubleshoot issues, and implement process improvements while ensuring safety and high standards. The role involves working with various moulding equipment and polymers, with a focus on continuous improvement.

Qualifications

• 3+ years' experience in plastics manufacturing.
• Proven extrusion blow moulding process setup and optimisation experience.
• Strong fault-finding and troubleshooting abilities.
• Experience performing mould changes independently.
• Understanding of common polymers (HDPE, LDPE, PP).

Responsibilities

• Perform mould changes, machine setups, and production changeovers safely and efficiently.
• Install and remove moulds, dies, blow pins, inserts, cooling circuits, and ancillary equipment.
• Set and optimise machine parameters including barrel, die, and mould temperatures, injection/ extrusion profiles, blow pressures and timings, and cycle times.
• Conduct machine start-ups and shutdowns per SOPs.
• Monitor and optimise machine performance, productivity, and product quality.
• Identify opportunities to reduce scrap, rework, downtime, and material usage.
• Develop and document best-practice machine settings and process standards.
• Diagnose processing issues (black specks, contamination, flash, short shots, warpage, defects).
• Perform first-off approvals and process verification checks.
• Provide technical guidance to machine operators and production staff.

Skills

Blow moulding setup

Troubleshooting

Reading technical drawings

Quality and safety

Process optimisation

Mould changes

Mechanical aptitude

Education

Mechanical engineering qualification

Trade qualification

Equivalent industry experience

Tools

Bekum

Uniloy

Kautex

Jomar

Aoki

Job description

Flexicon Plastics in New Zealand is seeking an experienced operator to join our plastics production team. You will perform mould changes, machine setups and changeovers, and optimise extrusion blow moulding processes to deliver quality parts efficiently.

You will read technical drawings, troubleshoot issues, and implement process improvements while ensuring safety and high standards. The role involves working with various moulding equipment and polymers, with a focus on continuous improvement.