Plastics injection molding creates some of the smallest microcellular parts and pieces needed for automobiles, construction, and other items. Sometimes the process creates prototypes or other items that may come from various Reaction Injection Molding (RIM) processed materials. With the different materials used in the plastics injection molding process, any of them may be cells as small as one-thousandth of an inch.
The Plastics Injection Molding Process for Microcellular Systems
Many different processes are able to produce these prototypes and microcellular items. It may be RIM or even the overmolding process where there is a combination of two liquid components. In either one of these, there may be a combination of polyurethane, polyureas, polyisocyanurates, polyester, polyphenol, polyepoxide, and nylon 6. It could be the creation of a fiber mesh or a foamed material, though some of the thicker ones are solids used for walls in construction.