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car in düsseldorf , germany. parts of this car, such as the fascia and body panels, were manufactured using a new process called reaction injection molding (rim), in which the reactants were mixed and then injected into a mold. the addition of fillers, such as milled glass, mica , and processed mineral
expensive metal molds, low-cost plastic tooling can be formed from a single metal master, which also allows greater design flexibility. the heat transfer characteristic of polypropylene tooling is poor, which must be taken into consideration during the formulation process. applications[ edit ] main articles...
https://en.wikipedia.org/wiki/Polyurethane