High productivity and cost reduction in molding thanks to stack molding
Stack molding technology represents an effective way to significantly increase plastic injection molding productivity without the need to invest in a larger injection molding machine. Campetella Robotic Center Srl is now launching the brand-new GS3W stack molding robot series, designed to meet customer needs across many areas of application — from the medical and pharmaceutical industry to food packaging and disposable cutlery production.
What is stack molding?
Stack molding uses multiple parting lines in a single mold. In practice, this means that twice as many — or even more — parts can be produced in one cycle while maintaining the same machine clamping force. The result is a significant increase in output without extending the cycle time or purchasing an additional injection molding machine.
Key benefits of stack molding technology
Significantly higher productivity
The multi-level mold arrangement makes it possible to produce more parts in one cycle while maintaining the same machine time. This brings higher output without expanding the production floor space.
Lower unit costs
A higher number of parts per cycle means lower cost per part. Energy consumption is optimised, machine time is used more effectively and operator costs are reduced.
Better utilisation of the injection molding machine
Stack molding maximises machine capacity, which is essential especially in high-volume production, for example in packaging, medical components or thin-wall products.
Savings in investment and space
Instead of installing another injection molding machine, production can be increased using a stack mold and specialised robotic handling. This means lower investment costs and more efficient use of production hall space.
Automation adapted to demanding applications
The new Campetella robot series for stack molding is designed for fast and precise handling of products from multiple mold levels. The solution meets requirements for cleanliness, precision and high cycle speed, which is essential, for example, in the medical and pharmaceutical sector or food packaging production.
A strategic advantage for modern manufacturers
The combination of stack molds and specialised Campetella robots enables manufacturers to significantly increase capacity without major additional investment in machinery. The result is higher efficiency, faster return on investment and long-term reduction of production costs.

