WHAT IS PULSECOOLING?

PulseCooling senses the mold surface temperature and applies a pulse of coolant at maximum flow rate directly from the chiller or cooling tower during each molding cycle for maximum heat removal. Each cooling pulse equals the excess heat from each molding cycle and compensates for cycle time, melt and ambient temperature and coolant pressure changes (flow).

  • 1. How does PulseCooling improve cycle time?
    By placing a sensor into the mold and controlling the mold surface temperature. Each molding cycle is cooled with a full flow cooling pulse, timed to match the exact cooling needs of each shot of melt, with coldest water available.
  • 2. How can PulseCooling produce better part quality?
    The PulseCooling cools during the first part of the molding cycle, just after the melt shot is completed when most heat is present (highest delta t) and shuts off the flow when cycle is near the end. The hot and cold spots (heat gradients) can dissipate (seek thermal equilibrium) this will produce a higher quality part since the shot was cured in a more uniform condition.
  • 3. Do I use the PulseCooling with my warm water circulator?
    No, the PulseCooling uses cooling water directly from the tower water supply or chiller.
  • 4. How can the PulseCooling improve the cycle when I have full flow?
    Full flow cooling is an uncontrolled cooling method, resulting in unpredictable parts. Typically a core requires more cooling then the cavity side of the mold. Cooling may be "on" continuously on the CORE side, while the CAVITY will be "on" a short time - just the right duration to remove the excess heat - thus maintaining the ideal mold surface and gate temperature.
  • 5. How and where do I install a sensor for best performance?
    A drilled hole will accommodate one of many sensor styles, which can be easily installed (click here for sensor selection and placement). A sensor is placed near the surface on core and cavity. The PulseCooling will test the mold for thermal responsiveness and "tune" itself to maintain the desired mold surface temperature. (Detail on installation instructions are available upon request and are included with each sensor).
  • 6. How many zones do I need for a typical 8 or 16 cavity mold?
    Typically one for the core, one for the cavity and if the tool has a hot runner or hot manifold, a separate zone is recommended to control the melt viscosity, gate temperature and the mold expansion.
  • 7. How can a 2-Zone PulseCooling Assembly control an 8 or more cavity mold?
    Each cavity receives the same amount of heat from the melt. Sensing the cooling needs of just one cavity provides the cooling information for cavities of the same size.
  • 8. Must a mold be redesigned to use the PulseCooling?
    No, the PulseCooling will enhance the performance of a poorly designed mold and will give top performance when used with a well-designed mold.
  • 9. How can I use PulseCooling on an existing mold without sensor holes?
    On an existing mold without a sensor hole, you may install an “internal wet probe” into the outgoing waterline. The PulseCooling software is designed to read the relative temperature in the waterline and thereby maintains the desired mold surface temperature.
  • 10. Will PulseCooling prevent thermal expansion?
    Yes, by maintaining the mold temperature with continuous feed back to the PulseCooling thermal drift – thus steel expansion is eliminated.
  • 11. What can I expect from PulseCooling in general terms?
    • Consistently better part
        • Consistently better cycle
            • Reduced maintenance cost
                • Drastic reduction of ciller load
                    • Fraction of operating cost
                        • Reduced capital investment

                       ALL RESULTING IN AN EXCELLENT R.O.I

PULSECOOLING
ECONOMICS

Complete molding cycle with PulseCooling Technology LEARN MORE

PULSECOOLING
TECHNOLOGY

Complete molding cycle with PulseCooling Technology

To obtain the highest performance and meet today's expectations, PulseCooling Technology is used to precisely meet the heating and cooling requirements of each molding cycle.

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CITO Products, Inc.
N8779 County Road X
Watertown, WI 53094 USA
(920) 261-2606
Sales
sales@citoinc.com