Our Dynamic Overpacking System is the perfect solution for managing the issue of polymerization shrinkage in closed-mold thermoset applications such as RIM, RIM-coating, and composite production. It works by acting on the precise control of in-mold pressure.
Conceived to seamlessly integrate with existing molding processes, our Dynamic Overpacking System operates through a hydraulically-actuated cylinder that enables a double-sequence injection. Once the DOS is loaded with mixed resin and the injection phase is complete, the polymerizing resin begins shrinking and a sensor detects pressure variations.
The piston then initiates a constant-pressure injection, counteracting the shrinkage. Due to its working principle, it can also be used to enable high-volume manufacturing for closed-mold injected components with embedded fragile inserts.
This system particularly benefits manufacturers of complex aesthetic components or high-stress structural parts, providing a competitive edge through improved product reliability and aesthetics.
Using advanced sensors and precision hydraulic mechanisms, the Dynamic Overpacking System ensures that each injection cycle is optimized for maximum material usage and minimal waste. The result is a higher-quality end product with fewer defects, reducing the need for additional finishing processes like painting or resurfacing.
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