The fast pace of today's product introduction cycles requires that suppliers meet shortened lead times for delivering product. Customers need the confidence that a supplier will deliver as promised. A missed delivery date can have a disastrous effect on a new product's marketing plan.

Rimnetics specializes in reaction injection molding (RIM), a process in which two or more liquid chemical components from separate tanks are fed through high pressure supply lines to a chamber where they are mixed by high-velocity impingement, and then injected into the mold at low pressure. The process is similar in concept to the familiar 2-part epoxy mix. With RIM the reactants become a low viscosity, exothermic, expanding material which readily flows into the mold. In fact, the mold clamping machine has microprocessor motion control to turn the mold, helping material flow into all cavities. When a successful series of movements are perfected they are stored as a program to ensure uniform molding for the entire parts run. As the mold fills the reactants are still releasing heat while tiny bubbles swell the plastic into the finest details of the mold. Clamping forces at this stage can reach 100 tons.

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