Central chiller with buffer tank
A closed cooling ring at about 12/18 °C with a buffer tank absorbs peaks at start-up and during mould changes.
Plastics & injection moulding cooling
Process cooling for plastics processing and injection moulding
Stable mould cooling for shorter cycle times, consistent dimensions and longer mould life. Sized on your complete machine park.
Why cooling matters here
Cooling determines a large part of your cycle time
In an injection moulding cycle, cooling time is often the longest step. Fluctuating water temperature causes varying shrinkage, warping and rejects. A stable supply temperature shortens the cycle and makes quality predictable.
We look at the whole machine park: coincidence, mould temperatures, hydraulic oil and cooling of the screw and feed throat. That avoids overcapacity and keeps energy use low, with free cooling in the cold months.
Technical features
Stable supply within ±0.5 °C
Shorter cycle times
Free cooling 4 to 6 months a year
Separate circuits per machine group
Our approach
Four building blocks for reliable mould cooling
Temperature controllers per mould
Water or oil temperature controllers keep each mould at its own process temperature, independent of the central ring.
Free cooling for winter operation
With a dry cooler or free cooling module, the compressor stays largely off in the cold months, saving significantly on energy.
Redundancy and monitoring
Redundant pumps and zones per machine group mean servicing one machine does not stop production. Monitoring flags fouling and pressure drop early.
Complete delivery
Complete installation around your machine park
Process cooling for plastics is custom engineered and therefore quoted on request. We can deliver the full project, from calculation to certified handover.
Engineering per machine group
Calculation based on simultaneous demand, mould temperatures, flow and pressure loss, with a suitable hydraulic design.
Certified piping
Process water, glycol and refrigerant piping to applicable standards, including certified welding where required.
Assembly and connection
Placement of chillers, buffer tanks, pump groups, temperature controllers and dry coolers, including all connections.
Testing and commissioning
Pressure testing, flushing, filling, tuning and functional checks before handover to your technical team.
The project price depends on your machine park, capacity, temperature levels, pipe routes and required controls.
Request a project quoteSuitable equipment
Series we use for this
Friulair QBS
Compact process chillers with integrated buffer tank and pump, ideal for one or a few moulding machines.
View the seriesFriulair TGR
Thermochiller combining cooling and temperature control, for processes with several temperature levels.
View the seriesFrimec chillers and controllers
Wide range from central chillers to water and oil temperature controllers per mould.
View the seriesSelection depends on your machine park, mould temperatures and layout. The configurator shows which models fit. Configurator
Applications
Where we apply this
Injection moulding
Mould cooling, hydraulic oil cooling and feed throat, central or per machine.
Extrusion and blow moulding
Cooling of calibration baths, rollers and blow moulds at constant temperature.
Thermoforming and recycling
Cooling of forming tables, granulate dryers and wash lines for plastics recycling.
Frequently asked questions
Injection moulding cooling, answers
How much cooling capacity does a moulding machine need?
As a rule of thumb, about 0.1 to 0.15 kW of cooling per kilogram of processed plastic per hour, depending on the material. We calculate per machine and on coincidence so you do not oversize.
What does a chiller for injection moulding cost?
That depends on the number of machines, required temperatures, simultaneous demand, piping and controls. After an assessment, you receive a custom quote for supply and, if required, complete installation.
Central cooling or one chiller per machine?
From about three machines, a central ring with temperature controllers per mould is usually more efficient and easier to maintain. For single machines or changing layouts, a chiller per machine can be more practical.
How does better cooling shorten cycle time?
A stable, well chosen supply temperature and sufficient flow through the mould channels shorten cooling time. In practice this often gives a few percent up to more than 10% shorter cycles.
Does free cooling make sense for injection moulding?
Yes. Because the ring runs at around 12 to 18 °C, outdoor air can take over cooling for much of the year. The compressor then stays largely off for 4 to 6 months.
Request directly
Request a quote for your mould cooling
Tell us how many machines you run, which materials you process and which temperatures you need. Within 1 business day you receive a first estimate.
- Response within 1 business day
- Custom design and quotation
- Installation and certified piping available