The Efficient NPC 72 ton Injection Moulding Machine

Between the 27th and 29th of October 2026 WD Hearn attended Propak Cape, the Western Cape's leading trade exhibition for packaging, processing, plastics, printing, and labelling. Hosted over three days at the Cape Town International Convention Centre (CTICC), Propak showcasing the latest technologies and innovations in the industry. Attendees can experience live machinery demonstrations, attend free industry seminars, and connect with suppliers driving the future of manufacturing.

Among all the machine’s WD Hearn was displaying at their stand this year, the largest was NPC’s 72 ton Injection Moulding Machine, a best seller in recent times. The NPC72 is servo-driven injection moulding machine designed for small-to-medium plastic components. It features a servo hydraulic system for energy-efficient operation, a bi-metallic screw for durability, and advanced controls for precise injection control. This machine is ideal for applications in the automotive, packaging, and consumer goods industries, providing reliable and high-quality plastic component production.

NPC 72 ton Injection Moulding Machine Features

• 72-Ton Clamping Force: Provides balanced clamping suitable for consistent parts.
• Servo Hydraulic System: Equipped with an energy-efficient servo motor and pump to reduce cycle times and optimize power consumption.
• Bi-Metallic Screw: Includes a durable, wear-resistant bi-metallic screw assembly as a standard baseline.
• Advanced Controls: Features a 10-inch LCD display running multi-language software for seamless parameter tuning.
• Back Pressure System: Built with a digital proportional back-pressure system to refine plasticizing consistency.
• Integrated Subsystems: Includes one pre-installed air blow device and one core-pull device.
• These features make the NPC72 ideal for small-to-medium plastic components requiring highly repeatable injection control and increased mould capacity.

Specifications of the NPC 72 ton Injection Moulding Machine

• Screw Diameter 32mm
• Screw L/D Ratio 21.4L/D
• Shot Volume(theoretical)(ps) 117cm³
• Injection Weight(ps) 105g
• Injection Rate 90.3cm³/sec
• Injection Pressure 178Mpa
• Screw Speed 220rpm
• Clamping Force 720KN
• Open Stroke 320mm
• Space Between Tie Bars(W*H) 355x315mm
• Max. Mould Height 360mm
• Min. Mould Height 130mm
• Ejector Stroke 90mm
• Ejector Force 34.3KN