Canadian Plastics

Jim’s Quick Guide to RIM

Canadian Plastics   



RIM is similar to injection molding except thermosetting polymers are used, which require a curing reaction within the mold. When reinforcing agents are added to the mix, the process is known as reinf...

RIM is similar to injection molding except thermosetting polymers are used, which require a curing reaction within the mold. When reinforcing agents are added to the mix, the process is known as reinforced reaction injection molding (RRIM); common reinforcing agents include glass fibres and mica. A subset of RRIM is structural reaction injection molding (SRIM), which uses fibre mesh for the reinforcing agent.

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