Canadian Plastics

Measuring System Provides More Precise Sequential Molding

Canadian Plastics   



The Priamus Fill system controls the melt flow in one- or multi-cavity hot runner molds in a closed loop. The system measures and analyzes cavity temperatures in order to adjust the set values of hot...

The Priamus Fill system controls the melt flow in one- or multi-cavity hot runner molds in a closed loop. The system measures and analyzes cavity temperatures in order to adjust the set values of hot runner controller automatically. The objective of the system is to compensate for viscosity changes, which normally happen during production, and thus to obtain uniform fill conditions.

The Priamus Fill system can now also be used for sequential molding applications. In large part, sequential molding with long flow distances, changing viscosities can lead to shifting weld lines and inconsistent fill behavior. The system is configured to position one cavity temperature sensor before each gate in the cavity, and one sensor near the end of the fill. As soon as the melt reaches the sensor before the gate, the system detects the rise and opens the respective nozzle automatically. In contrast to a time or position dependent method, the nozzles always open under defined conditions.

Priamus System Technologies www.priamus.com

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