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MOLD TEMPERATURE REGULATOR

COST EFFECTIVE MOLD TEMPERATURE CONTROL

No Electricity Required

No Floor Space Required
No Noise
Shown actual size

Principle of Operation
The Mold Temperature Regulator works on the
principle of thermal expansion. It is connected to the return lines
of the mold cooling water loop. A simple bellows and range spring
capsule senses the temperature of the water leaving the mold
and compares it to the set point temperature. The set point is SUPPLY
easily adjusted by rotating the pointer knob to the desired water
temperature value on the calibration scale. The dial
thermometer provides visual verification of the setting. Cool water
Note: A discrete cooling water temperature always corresponds enters the mold.
to a hotter mold (steel) temperature.
When the water temperature leaving the mold is hotter than the Mold is heated
set point, the internal valve modulates toward open, cooling by the molding
water flow rate increases and cooling water temperature process.
decreases to stabilize at the set point. When the water
temperature leaving the mold is cooler than the set point, the Flow rate is regulated to maintain
internal valve modulates toward close, cooling water flow rate constant water/mold temperatures.
decreases, residency time in the mold increases and cooling water
temperature rises until stabilizing at the set point. The valve never Thermometer verifies
completely closes. proper temperature.
Note: The Mold Temperature Regulator recovers waste heat en-
ergy from the resin shot and transfers it to heat the
cooling water and the mold. The mold Temperature Regulator
does not generate heat and it does not function as a chiller.

Also Controls Barrel Feed Throat Temperatures
Molders typically process using maximum water flow in the
barrel feed throat cooling loop. This works until the ambient
temperature and humidity increase to a point where RETURN
condensation forms on the metal feed throat and the hydroscopic
resin material begins to absorb moisture. There is a simple Water returns to
solution to this unacceptable problem.
source.
Rather than spend time manually adjusting water to flow to the
feed throat and periodically checking it, a molder can install PPE’s
Mold Temperature Regulator in the feed throat return cooling
water line, set it for the process conditions and forget it. The Mold TYPICAL APPLICATION
Temperature Regulator will automatically maintain the feed throat
temperature at the set point.

PLASTIC PROCESS EQUIPMENT, INC. www.ppe.com
e-mail: sales@ppe.com
E 8303 CORPORATE PARK DRIVE W 6385 MONTESSOURI STREET
A MACEDONIA, OHIO 44056-2300 E LAS VEGAS, NEVADA 89113-1186 Toll Free: USA, Canada & Mexico
S 216-367-7000 • FAX: 216-367-7022 S 702-433-6385 • FAX: 702-433-6388 800-362-0706
T TOLL FREE: 800-321-0562 T TOLL FREE: 800-258-8877 Order Fax: 800-223-8305
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