The difference between reaction injection moulding and injection molding

Reaction injection moulding and injection molding have almost the same name, so even experienced engineers and designers might think they are the same. But “Reaction” signals a big difference – unlike injection mould, MASTER techniques utilize low-viscosity liquid polymers in thermoset – not thermoplastic – processes. Through a variety of chemical reactions, these polymers expand, thicken and harden only after they’re injected into the heated mold, accommodating much more intricate designs than ordinary injection molding.