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11/1/2009

Software Balances Hot-Runner Filling Automatically

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WEB EXCLUSIVE: Two new temperature-based control programs to address flow balancing in hot-runner systems have been added to the Priamus Fill controls from Priamus System Technologies LLC., Brunswick, Ohio.

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WEB EXCLUSIVE: Two new temperature-based control programs to address flow balancing in hot-runner systems have been added to the Priamus Fill controls from Priamus System Technologies LLC., Brunswick, Ohio. Priamus Fill uses melt-temperature sensing in the cavity to automatically adjust nozzle temperatures to balance flow into multiple cavities. If such adjustments are not sufficient to achieve balance—for example, in a slow-acting hot-runner system—Priamus has added an additional algorithm to control the melt flow via timing of the valve gates. This approach is said to be particularly useful for LSR applications. Priamus also has a new automatic hot-runner analysis program that automatically determines the temperature sensitivity of each nozzle in a system. Temperature sensors in each cavity check how melt-flow behavior changes when nozzle temperatures rise or fall by a certain value.

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