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Home » Industry » Plastic & Rubber »
Category 03 of 5 · Air & Thermal Control
ChillersFor Plastic & RubberMold Cooling & Process Cooling Systems
A plastic injection molding chiller removes process heat from the mold faster and more consistently than plant water or ambient air ever could, and the cooling phase it controls can account for up to 80% of total cycle time. Built as an industrial chiller for plastic molding and rubber processing lines, the right chiller keeps mold surface temperature stable shot after shot, so parts release cleanly and dimensions hold. We specify, supply, and commission water-cooled and air-cooled chillers across Thailand, sized to the real cooling load, not just the machine's tonnage rating.
✓ EN 14511 Performance Testing ✓ Water-Cooled & Air-Cooled Options ✓ ±1°C Set-Point Control ✓ Sized To Real Cooling Load
Process Cooling Loop Map
Heat Removal Stage 01–02
Chiller UnitRemoves process heat, sets supply temperature
Process PumpCirculates chilled water through mold circuits
Heat Rejection Stage 03–04
Mold / Barrel CircuitAbsorbs heat from the melt during cooling
Heat RejectionTo ambient air or a cooling tower
Chat On LINE Sized to your mold, not just the machine
80%
The cooling phase can account for up to 80% of total molding cycle time
7–15°C
Chilled water supply temperature, matched to mold and material
±1°C
Consistent mold temperature control across the full cycle
2
Water-cooled and air-cooled, matched to load and infrastructure
Product Overview
Process Cooling For Plastic & Rubber Production Lines
Heat moves from the molten plastic into the mold, and from the mold into a continuously circulating cooling medium, before a part can be released. That heat removal step is not a minor supporting task, it is frequently the single largest share of the whole molding cycle. A mold cooling chiller system sized to the real thermal load, not just the clamping tonnage of the machine, shortens that cooling phase and holds mold surface temperature steady from the first shot of the day to the last.
A plastic processing water chiller or air-cooled unit removes the heat rejected by the mold, hydraulic oil, barrel, and any auxiliary equipment sharing the same loop, at a supply temperature and flow rate matched to the material being processed. A rubber extrusion chiller system faces a related but different challenge, continuous thermal load rather than a cyclical one, which shifts the sizing calculation toward sustained capacity rather than peak recovery speed.
Domnick Thailand calculates process cooling chiller plastic industry and rubber requirements from the actual heat load, resin throughput, cycle rate, and number of machines sharing one loop, rather than a rule-of-thumb ratio to machine size, so the chiller delivers the cooling capacity the process needs without oversized compressor energy running in the background.
- Plastic injection molding chiller for mold and barrel circuits
- Industrial chiller for plastic molding and blow molding lines
- Mold cooling chiller system sized to real thermal load
- Plastic processing water chiller for central plant cooling
- Rubber extrusion chiller system for continuous thermal loads
- Process cooling chiller plastic industry multi-machine loops
- Water cooled chiller plastic factory central installations
- Air cooled chiller plastic molding standalone machines
- Rubber processing cooling system for presses and mixers
- Mold temperature control chiller for dimensional consistency
Process Cooling Loop, Chiller To Mold And Back
01
Chiller UnitRemoves process heat, delivers water at set supply temperature
02
Process PumpCirculates chilled water through mold and machine circuits
03
Mold / Barrel CircuitAbsorbs heat from the melt during the cooling phase
04
Heat RejectionWarm water returns; heat rejected to air or a cooling tower
Where It's Used
Process Cooling Across Every Plastic & Rubber Line
A cyclical injection shot and a continuously running extruder put very different demands on a chiller, even when the total heat load looks similar on paper.
Continuous Load · Sustained Capacity Required ➰
Rubber Extrusion: A Continuous, Not Cyclical, Thermal Load
Unlike an injection mold, which cools in bursts between shots, a rubber extrusion line runs its cooling load continuously for the length of the production run. A rubber extrusion chiller system has to sustain full capacity hour after hour rather than recover quickly between cycles, which makes total heat rejection capacity, not peak response speed, the number that matters most. A rubber processing cooling system undersized for that continuous duty will drift warmer as the run goes on, and the die or roll temperature it is meant to hold steady drifts right along with it.
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Injection Molding Mold Cooling
A plastic injection molding chiller and mold cooling chiller system holds cavity surface temperature steady so every part fills, cools, and releases the same way.
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General Process Cooling
A process cooling chiller plastic industry loop serves hydraulic oil coolers, barrel cooling, and auxiliary equipment sharing the same central plant.
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Central Plant Water Cooling
A plastic processing water chiller feeding a central loop supports multiple machines from one efficiently sized central plant.
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Precision Mold Temperature Control
A mold temperature control chiller holds tight tolerances for parts where dimensional consistency and surface finish cannot drift shot to shot.
Chiller Type
Water-Cooled Or Air-Cooled, Matched To Load And Infrastructure
Both technologies do the same job, remove process heat and reject it somewhere else, but the right choice depends on production scale, water access, and plant layout.
Water-Cooled Chillers
Heat is rejected to a cooling tower rather than directly to plant air, which gives water-cooled systems higher long-term efficiency and more stable thermal performance as load scales up. This is why large, continuous production facilities in Thailand's plastic and rubber sector typically standardize on centralized water-cooled plants.
- Best fitHigh-volume central plants, continuous extrusion
- EfficiencyHigher long-term efficiency at scale
- InfrastructureRequires cooling tower and water treatment
- FootprintCompact indoor installation
Air-Cooled Chillers
A built-in fan-driven condenser rejects heat straight to ambient air, removing the need for a cooling tower, water treatment, or make-up water supply entirely. This makes an air cooled chiller plastic molding installation faster to commission and simpler to maintain, at the cost of a larger footprint and more sensitivity to hot ambient conditions.
- Best fitStandalone machines, limited water access
- EfficiencyNo water treatment cost, simpler operation
- InfrastructureNo cooling tower, outdoor installation
- FootprintLarger footprint per ton of cooling
Selecting between the two: a water cooled chiller plastic factory installation is generally the more economical choice above a certain production scale, once the cooling tower and water treatment cost is offset by lower running power. An air-cooled unit remains the simpler, lower-infrastructure choice for standalone machines or sites without reliable water access, though its rated capacity is set against a specific design ambient temperature, and Thailand's daytime ambient can run close to or above that figure during peak production hours.
Why It Matters
Three Ways A Chiller Falls Short In Practice
A chiller that looks correctly rated on paper can still leave a plant fighting cycle time, contamination, or capacity loss once it is running under real conditions.
01 ⏱️ Undersized Capacity Risk
A Chiller Too Small For The Load Extends Every Cycle
Because cooling can account for up to 80% of total cycle time, a chiller with too little capacity for the actual heat load does not fail outright, it simply cannot pull mold temperature down as fast as the process wants to run. The molding machine keeps working normally, but every single cycle runs longer than it should, and that lost time compounds across every shift.
02 🧪 Water Quality Risk
Untreated Water Fouls A Water-Cooled Chiller's Heat Exchangers Over Time
Mineral scale and biological growth in an untreated or poorly treated cooling tower loop gradually coat heat exchanger surfaces, and even a thin fouling layer measurably cuts heat transfer efficiency. Left unchecked, the same deposits can narrow or block the fine cooling channels inside a mold, at which point the fix is no longer water treatment, it is a mold rework.
03 🌡️ Ambient Derate Risk
Thailand's Ambient Temperature Can Quietly Derate An Air-Cooled Chiller
An air-cooled chiller's rated capacity is set against a specific design ambient temperature, and when the actual air around the condenser runs hotter than that design point, the unit has less capacity to reject heat, exactly when a hot production hall and full production load are asking the most of it. The nameplate capacity is only correct at the ambient it was rated for.
Standards & Compliance
EN 14511 Chiller Performance Testing ISO 8573-1 Air Quality Classes ISO 9001 Quality ISO 14001 Environmental Thailand Industrial Safety
Cooling Is Most Of The Cycle Size It Right
Our engineers calculate the real heat load, recommend water-cooled or air-cooled chillers against your production scale and site conditions, and support commissioning for plastic and rubber plants across Thailand.
Get expert guidance when you need it. Our support team is here to provide you with the right solutions.
