What is reaction injection molding ?
Fortunately, it is possible to mold thermosets using a process called reaction injection molding (RIM), which was developed in the 1960s to make more impact-resistant automotive parts. Instead of melting down solid pellets, this form of injection molding uses a special mixer to combine the two liquid parts of the thermoset polymer and create a chemical reaction that allows the material to cure and harden once injected into the mold cavity.This article discusses the basics of reaction injection molding, the materials available, and the main advantages and disadvantages.