What is a multi-cavity injection mould?

A multi-cavity injection mould is a single tool containing multiple identical cavities that produce the same part in one cycle. It increases output without adding machines, making it ideal for high-volume production where consistency across parts is critical.

How many cavities should an injection mould have?

Cavity count depends on annual volume, part size, cycle time, press capacity, and budget. There is no universal number. The optimal cavitation balances throughput with total cost of ownership and available machine tonnage.

What are the advantages of multi-cavity injection moulding?

Key benefits include higher production output per cycle, lower piece-part cost, reduced labour per part, and faster order fulfilment. It also consolidates production into fewer machines, saving floor space and energy at scale.

What are the main challenges of multi-cavity injection moulds?

Challenges include higher upfront tooling cost, complex hot runner systems, strict flow and thermal balance requirements, demanding setup conditions, and more intensive preventive maintenance needs.

How does hot runner system complexity scale with cavity count?

Each additional cavity requires more drops, heating zones, sensors, and control channels. At high cavitation levels, the hot runner becomes the most complex and maintenance-intensive subsystem, demanding precise thermal control.