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Jim’s Quick Guide to RIM

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...


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April 1, 2010 by 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 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.