Injection Molding Chiller for Mold Cooling and Plastic Processing
APT injection molding chillers provide stable chilled-water cooling for plastic injection molding machines, molds, hydraulic systems, feed throat cooling, and production water loops. Each system can be configured according to injection machine size, mold temperature requirement, cooling capacity, pump pressure, water flow, voltage, and factory installation conditions.
Key Technical Summary
What Is an Injection Molding Chiller?
An injection molding chiller is an industrial cooling system used to supply chilled water to plastic injection molds, hydraulic systems, feed throat sections, and process water loops. Stable cooling water temperature helps remove heat from the mold and machine, supporting repeatable production cycles, consistent product quality, and reliable equipment operation.
Mold Cooling
Removes heat from injection molds to support stable forming and shorter cycle time.
Hydraulic Oil Cooling
Helps control heat generated by the injection molding machine hydraulic system.
Feed Throat Cooling
Supports stable material feeding and prevents excessive heat transfer near the hopper section.
Closed-Loop Water Cooling
Provides cleaner and more stable cooling compared with open water circulation.
Why Stable Cooling Matters in Plastic Injection Molding
In injection molding production, cooling often takes a large part of the total molding cycle. Stable mold temperature and reliable chilled-water circulation help reduce cycle time, improve part consistency, reduce deformation, and support continuous production.
Shorter Cycle Time
Efficient mold cooling helps reduce cooling time and improve production efficiency.
Consistent Product Quality
Stable mold temperature supports dimensional consistency, surface quality, and repeatable molding results.
Machine Protection
Cooling helps reduce heat stress on hydraulic oil, molds, and process water circuits.
Common Cooling Challenges in Injection Molding Applications
Mold Temperature Fluctuation
Unstable cooling water temperature can affect part dimensions, surface quality, shrinkage, and cycle consistency.
Long Cooling Cycle
Insufficient cooling capacity or poor water flow may increase cooling time and reduce production output.
Uneven Mold Cooling
Blocked channels, low flow rate, or poor water distribution can cause uneven mold temperature and product defects.
Hydraulic Oil Overheating
Injection molding machines may generate heat in the hydraulic system, requiring stable cooling support during continuous production.
Scaling and Water Quality
Poor water quality can lead to scaling, blocked channels, reduced heat transfer, and higher maintenance frequency.
Multiple Machine Cooling
Factories with multiple injection molding machines may need centralized cooling, suitable pump pressure, and controlled water distribution.
APT Engineering Solution for Injection Molding Cooling
APT designs injection molding chillers according to machine size, mold heat load, required water temperature, flow rate, pump pressure, ambient temperature, voltage, and factory layout. Both standalone chillers and centralized cooling systems can be configured for plastic processing plants.
- Stable chilled-water supply for mold cooling and process cooling
- Air-cooled and water-cooled configurations available
- Integrated pump and water tank options
- Custom pump pressure and flow rate based on mold cooling circuit
- Water filter, bypass, flow switch, and protection functions available
- PLC, alarm output, and remote monitoring options
- Custom voltage for international factories
- Centralized cooling options for multiple injection machines
Engineering Configuration Focus
Recommended Chiller Configurations for Injection Molding
APT can recommend different chiller configurations according to injection machine size, mold temperature requirements, number of machines, cooling tower availability, and factory installation conditions.
1-5 HP Compact Air-Cooled Chiller
Suitable for small injection molding machines, test molds, laboratory molding, compact plastic equipment, and independent cooling circuits.
View Compact Chillers5-20 HP Industrial Air-Cooled Chiller
Suitable for standard injection molding machines, mold cooling, hydraulic cooling, and standalone production equipment.
View 5-20 HP Chillers20-50 HP Large Air-Cooled Chiller
Recommended for medium to large injection molding machines, multiple molds, production lines, and higher heat load applications.
View 20-50 HP ChillersWater-Cooled or Centralized Cooling System
Suitable for factories with multiple injection molding machines, continuous production, indoor installation, cooling tower systems, or higher efficiency requirements.
View Water-Cooled ChillersNeed a custom pump, tank, or centralized cooling system? Request a Custom Solution
Industrial Chiller for Injection Molding Machine Cooling
For injection molding workshops, APT can configure industrial chillers with suitable compressor capacity, pump flow, tank volume, evaporator type, voltage, and control logic. This supports stable mold cooling, hydraulic oil cooling, and process water temperature control during continuous production.
- Suitable for standalone or multi-machine injection molding cooling
- Designed around real mold temperature and flow requirements
- Air-cooled or water-cooled configuration available
- Custom voltage, pump, filter, and control options available
Typical Cooling Points in Injection Molding Systems
Injection Mold Cooling
Chilled water circulates through mold cooling channels to remove heat from the molded part and mold steel.
Hydraulic Oil Cooling
Cooling helps control oil temperature and supports stable hydraulic system operation during continuous molding.
Feed Throat Cooling
Feed throat cooling helps reduce heat transfer to raw material and supports stable plastic feeding.
Machine Barrel / Auxiliary Cooling
Some injection systems require cooling support for auxiliary equipment, hopper, dryer, or temperature control units.
Central Process Water Loop
For multiple machines, a centralized chiller system can supply chilled water to different production lines.
Injection Molding Chiller Technical Parameters
The following parameters are for reference. Final chiller selection should be confirmed according to machine heat load, mold temperature, cooling water flow, pump pressure, ambient temperature, and production schedule.
| Parameter | Typical Range / Options | Notes |
|---|---|---|
| Cooling Capacity | 1 HP - 100+ HP customizable | Selected according to machine size, mold heat load, and number of machines |
| Temperature Range | 5°C - 35°C or customized | Typical mold cooling water temperature depends on plastic material and product requirement |
| Temperature Stability | ±1°C available | Supports stable process cooling and repeatable molding conditions |
| Cooling Method | Air-cooled or water-cooled | Selected according to installation site and cooling tower availability |
| Pump Flow | Customized | Matched to mold cooling circuit and production water loop |
| Pump Pressure | Customized | Selected according to piping length, mold channels, filters, and pressure loss |
| Water Tank | Built-in or external | Optional depending on system layout and cooling stability requirement |
| Evaporator | Tank coil, plate heat exchanger, or shell-and-tube | Selected according to capacity, water quality, and process requirements |
| Compressor | Scroll, piston, or screw | Selected according to cooling capacity and working conditions |
| Control System | Digital controller or PLC optional | Alarm output and communication interface available |
| Power Supply | 220V / 380V / 415V / 460V, 50Hz / 60Hz | Custom voltage available for different countries |
| Protection Functions | High pressure, low pressure, overload, phase sequence, water flow, anti-freezing | Industrial safety protection for continuous operation |
| Custom Options | Filter, bypass, dual pump, stainless steel tank, outdoor design, centralized cooling | Configured based on factory requirements |
Cooling capacity may vary according to chilled-water temperature, ambient temperature, condenser condition, mold heat load, water flow, and injection cycle. Please confirm actual working conditions before final selection.
How to Select an Injection Molding Chiller
1. Confirm Machine Information
Provide injection molding machine tonnage, number of machines, hydraulic system information, and production schedule.
2. Confirm Mold Cooling Requirement
Provide mold temperature target, cooling water inlet and outlet temperature, and product cycle requirement.
3. Estimate Heat Load
Cooling capacity can be estimated from machine size, plastic material, shot weight, cycle time, and mold heat load.
4. Check Water Flow and Pressure
Confirm required water flow, pump pressure, piping length, mold channel resistance, and filter requirements.
5. Choose Air-Cooled or Water-Cooled
Select air-cooled chillers for easy installation or water-cooled chillers for higher efficiency and centralized factory cooling.
6. Finalize Custom Configuration
APT engineers recommend pump, tank, evaporator, compressor, voltage, control system, and protection options.
Related Chiller Product Solutions
Explore related APT chiller product categories for different injection molding cooling capacity ranges and installation requirements.
Compact Air-Cooled Chillers
Compact chillers for small injection molding machines, test molds, laboratories, and independent equipment cooling.
View Compact Chillers5-20 HP Industrial Air-Cooled Chillers
Standard industrial air-cooled chillers for injection molding machines, mold cooling, and production equipment cooling.
View 5-20 HP Chillers20-50 HP Large Air-Cooled Chillers
Large air-cooled chillers for medium and large injection molding machines, multiple molds, and production lines.
View Large ChillersWater-Cooled Chillers
High-efficiency water-cooled chillers for continuous production, cooling tower systems, and centralized process cooling.
View Water-Cooled ChillersCustom Cooling Solutions
Custom pump, tank, evaporator, voltage, PLC, stainless steel circuit, and centralized cooling system options.
View Custom Cooling SolutionsParts & Heat Exchangers
Heat exchangers, pumps, compressors, sensors, filters, and spare parts for chiller maintenance and replacement.
View Chiller PartsRelated Industrial Cooling Applications
APT also supports other industrial cooling applications that require stable water temperature, reliable cooling capacity, and process-based chiller selection.
Plastic Extrusion Cooling
Cooling for extrusion barrels, dies, rollers, vacuum tanks, and continuous plastic extrusion lines.
View Plastic Extrusion CoolingDie Casting Cooling
Cooling for die casting machines, molds, hydraulic systems, and high-temperature production equipment.
View Die Casting CoolingCNC Machine Tool Cooling
Cooling for CNC spindles, machine tools, cutting fluid systems, and precision machining equipment.
View CNC CoolingLaser Cooling
Stable chilled-water cooling for laser sources, optics, power supplies, and industrial laser systems.
View Laser CoolingElectroplating & Anodizing Cooling
Tank cooling and process temperature control for plating baths, anodizing lines, and surface treatment systems.
View Plating CoolingThermal Spray Cooling
Closed-loop cooling for HVOF spray guns, plasma spray torches, and thermal spray coating systems.
View Thermal Spray CoolingFrequently Asked Questions
Answers to common questions about injection molding chillers, mold cooling, hydraulic oil cooling, cooling capacity selection, and custom process cooling systems.
What is an injection molding chiller used for?
An injection molding chiller is used to supply chilled water to injection molds, hydraulic systems, feed throat sections, and process water loops. It helps remove heat from the mold and machine, supporting stable production cycles and consistent plastic part quality.
Why does injection molding need a chiller?
Injection molding needs cooling to remove heat from the mold after molten plastic is injected. Stable mold cooling can help reduce cycle time, improve dimensional consistency, reduce deformation, and support continuous production.
How do I choose the right chiller size for an injection molding machine?
Chiller size depends on injection machine tonnage, mold heat load, plastic material, shot weight, cycle time, target water temperature, flow rate, and number of machines. APT recommends confirming actual process data before final selection.
Should I choose an air-cooled or water-cooled chiller for injection molding?
Air-cooled chillers are easier to install and suitable for standalone machines or workshops without cooling towers. Water-cooled chillers are often preferred for continuous production, higher efficiency, indoor installation, and centralized cooling systems.
Can one chiller cool multiple injection molding machines?
Yes. A properly designed centralized chiller system can supply chilled water to multiple injection molding machines. The system should be selected according to total heat load, water flow, pump pressure, piping layout, and control requirements.
What water temperature is used for mold cooling?
The required mold cooling water temperature depends on plastic material, mold design, product quality requirements, and cycle time. Many injection molding processes use chilled water within a typical industrial range, but final temperature should be confirmed according to the specific molding process.
Can APT customize pump and tank configurations?
Yes. APT can customize pump pressure, water flow, built-in or external tank, filter, bypass, dual pump, stainless steel water circuit, voltage, and control system according to injection molding cooling requirements.
Can a chiller help reduce injection molding cycle time?
A properly selected chiller can help improve heat removal from the mold and reduce cooling time, which may support shorter molding cycles. Actual cycle improvement depends on mold design, cooling channels, water flow, material, and process settings.
What information should I provide for an injection molding chiller quotation?
Please provide injection molding machine tonnage, number of machines, plastic material, mold temperature requirement, cooling water inlet and outlet temperature if available, flow rate, voltage, ambient temperature, and installation conditions.
Does APT provide custom injection molding cooling systems?
Yes. APT provides custom injection molding cooling systems including air-cooled chillers, water-cooled chillers, centralized cooling systems, pump and tank modules, PLC control, alarm output, water filtration, and custom voltage options.
Need a Chiller for Your Injection Molding Machine?
Send us your injection machine size, mold temperature requirement, cooling capacity, water flow, pump pressure, voltage, number of machines, and installation conditions. APT engineers will help recommend a suitable injection molding chiller configuration.