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Reaction Injection Moulding

Reaction Injection Moulding – or RIM for short, offers many of the benefits of traditional injection moulding whilst allowing for rapid design iterations and shorter production runs. RIM materials offer outstanding mechanical characteristics with predictable behavior in a wide range of operating environments, making them perfectly suited to not only functional prototypes but production components.


Prototype RIM components

RIM resins comprise of addition cure polyurethane resins, mixed upon entry and injected into a cavity mould. The resins are carefully formulated to exhibit controlled mechanical characteristics commonly reflecting that of ABS and Polypropylene, although many other behaviours can be accurately replicated. RIM parts are fully paintable and exhibit isotropic characteristics allowing for predictable geometry.

By utilizing a range of advanced material technologies we’re able to make cost effective moulds suitable for individual or small runs of parts. Many of our clients appreciate the ability to produce evaluation models exhibiting end-product characteristics whilst maintaining the flexibility of rapid design iterations. Revised moulds can be produced in under 24 hours allowing for an uninterrupted prototype workflow.


Batch production RIM components

When larger production quantities are required, our engineers will elect to manufacture tooling from more resilient moulding materials which permit multiple components to be made whilst maintaining stringent dimensional tolerances. Certain applications allow for multiple mould cavities to be integrated into an array which streamlines production by moulding a number of components simultaneously.




Our Capacity

Single piece components from 10g up to 4kg in weight from a single mould with larger parts available on application.