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
How can PulseCooling
produce better part quality? The
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.
I use the PulseCooling
with my warm water circulator? No, the PulseCooling
uses cooling water directly from the tower water supply or
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.
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 (detail information on sensor choice and
placement in available upon request). 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)
How many zones do I need for a typical 8 or 16 cavity mold?
Typically 1 for the core, 1 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
can 2 Zone PulseCooling
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.
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.
can I Pulse Cool 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
software is designed to read the relative temperature in the
waterline and thereby maintains the desired mold surface
Will a PulseCooling
prevent thermal expansion? Yes,
by maintaining the mold temperature with continuous feed back to
the PulseCooling thermal drift – thus steel expansion is eliminated
What can I expect from a PulseCooling
in general terms?
• Consistently better cycle
Reduced maintenance cost