Reaction Injection Moulding (RIM)

RIM (Reaction Injection Moulding) is a process where a fast reacting PU (polyurethane) resin is low pressure injected into a mould.

This process conveniently fits between Vacuum Casting and Thermoplastic Injection Moulding in the prototyping / manufacturing chain. This is a cold injection process that does not require pre-heating of moulds or post curing of castings. Larger sized components can be produced and several moulds can be cast consecutively, leading to quicker production times.

Tools are made from Silicone, Resin, Model Board or Aluminium, dependant on required Tool life.  This process is mainly used for larger and simpler parts with a typical wall thickness of 2-3mm+.  A wide range of production simulant materials are available, offering a wide range of properties; high temperature resistance, rigid, high impact resistant, semi-rigid or flexible; solid or foamed, with a density as low as 40 kg/m³.

Rigid self-skinning materials, where the surfaces are hard and solid enclosing a foam core, can be moulded to produce lightweight but rigid components. This process is equal to injection moulded parts but without the high cost tooling and lengthy production times.

Typical lead times of 10-20 Working Days dependant on component design

Please contact us for current capacity or advice.