Reaction injection molding - description of the process
Reaction injection molding (RIM) mixes two or more components in a low-pressure process before being injected into a forming tool. At a low locking pressure, the reaction mass cures in a chemical process, via polymerization, inside the forming tool. In contrast to thermoplastics, once formed, thermosetting plastics no longer deform when exposed to heat. This makes RIM ideal for low quantities of large, complex, stable, and lightweight components, including 2-component parts.