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Our Process
Custom Plastic Products and Component Parts from Component Molding (Milfoam) are strong, durable, resilient, easy-to-maintain and affordable.
The RIM process combines liquid components, then injects them into a low pressure mold where they react to form a thermoset Polymer. Aluminum RIM molds make the process economical for large - part and low volume production.
User-friendly RIM products can combine the strength of steel with the softness of foam. |
RIM urethanes are the result of a chemical reaction that takes place between the two primary components of a urethane polymer - an isocyanate and a polyol. These two liquid components are stored in separate, temperature-controlled day tanks and metered via closed-loop controlled hydraulic lances through a piping system to the mix head. In the recirculation mode, the mix head is valved so that materials return back to their respective tanks. When a "shot" is made, the mix head valves shift, causing the components to blend under impingement pressure in a mixing barrel. The mixed components then exit the mix head and enter the mold via a gate and runner system. At the end of the shot, a hydraulically-driven piston moves forward and cleans any residual polymer from the mix chamber without the use of solvents.
Because the components are injected into the mold cavity as a liquid, the molds can be constructed to withstand relatively low pressures and are typically made from aluminum. Mold carriers or clamps also operate under comparatively low tonnages. For most applications, 100-200 psi is sufficient. |
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Resilient RIM-molded bumpers, panels and fasciae take abuse without cracking or breaking. |
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