Heating and Cooling Principle

During machine start-up and normal operation, the heating elements transfer thermal energy to the barrel until the required processing temperature is reached.
During production, however, friction and shear generated by the rotating screw may cause the barrel temperature to rise above the required set point. In this situation, the air cooling system helps remove excess heat from the barrel.
Cooling air is circulated through specially designed air channels around the heater and barrel surface. This allows excess heat to be dissipated more effectively and helps maintain a stable processing temperature.
The combination of electrical heating and forced-air cooling provides better temperature regulation compared with standard heating systems in applications where both heating and cooling are required.

Main Applications

Air Cooling Heaters can be used in a wide range of plastic processing machinery, including:

• Plastic extrusion machines
• Blown film extruders
• Plastic recycling machines
• Plastic pelletizing and granulation lines
• PVC extrusion machines
• Pipe and profile extrusion lines
• Sheet extrusion machines
• Compounding extruders
• Single-screw and twin-screw extruders
• Injection molding machines for PVC and similar materials
• Other plastic processing equipment requiring controlled barrel heating and cooling

Advantages of Air Cooling Heaters

The main advantages of air-cooled barrel heater systems include:

• Efficient barrel heating combined with forced-air cooling
• More accurate barrel temperature control
• Faster response to excessive process temperatures
• Improved temperature stability during continuous production
• Suitable for high-output extrusion and recycling applications
• Reduced risk of overheating heat-sensitive plastic materials
• Suitable for different barrel diameters and machine configurations
• Custom manufacturing according to machine and process requirements
• Easy integration into existing extrusion and recycling machinery

Custom-Made Air Cooling Heaters

Our Air Cooling Heaters are manufactured according to customer requirements and can be designed for different types and sizes of extrusion, recycling and plastic processing machinery.
Depending on the application, heaters can be manufactured according to parameters such as:

• Barrel diameter
• Heater width and dimensions
• Required heating power (W / kW)
• Operating voltage
• Number of heating zones
• Cooling air requirements
• Fan configuration
• Electrical connection requirements
• Temperature sensor configuration
• Machine type and processed plastic material

For replacement applications, heaters can also be manufactured according to the dimensions, technical specifications, drawings or samples of the existing heater.

Air Cooling Heaters for Extrusion and Recycling Applications

Stable barrel temperature is one of the most important parameters in plastic extrusion and recycling processes. Excessive temperature can negatively affect melt quality, material characteristics and production stability, while insufficient temperature can increase processing resistance and reduce machine performance.
For this reason, air-cooled heater systems provide an effective solution for extrusion processes requiring continuous and precise barrel heating and cooling control.
They are particularly useful in applications where the heat generated naturally by screw rotation and material friction must be removed rapidly from individual barrel zones.

Technical Information Required for Quotation

For a suitable Air Cooling Heater quotation, please provide the following information whenever available:

• Machine type and application
• Processed plastic material
• Barrel outside diameter
• Heater width
• Required heating capacity
• Operating voltage
• Existing heater dimensions
• Electrical connection details
• Photos or technical drawings of the existing heater

Based on this information, we can offer a customized air cooling heater suitable for your extrusion, recycling or plastic processing machine.

Frequently Asked Questions

What is an Air Cooling Heater?
An Air Cooling Heater is an industrial barrel heating system designed to provide electrical heating while allowing forced-air cooling when the process temperature exceeds the required level.

Where are Air Cooling Heaters used?
They are mainly used in plastic extrusion machines, recycling machines, pelletizing lines, granulators, PVC processing machinery and other applications requiring accurate barrel temperature control.

Can Air Cooling Heaters be used on recycling machines?
Yes. They are commonly used on plastic recycling and pelletizing extruders where stable barrel temperature is important for continuous processing.

Are Air Cooling Heaters suitable for PVC processing?
Yes. Air cooling can be particularly useful for PVC and other temperature-sensitive materials because excessive barrel temperatures can be controlled more effectively.

Can you manufacture heaters according to our existing machine?
Yes. Air Cooling Heaters can be custom-manufactured according to the customer's machine dimensions, technical requirements, drawings, specifications or existing heater samples.

Can Air Cooling Heaters replace existing barrel heaters?
In many applications, customized heaters can be manufactured as replacement units. The existing heater dimensions, electrical specifications and cooling arrangement should be checked before production.

What information is required to order an Air Cooling Heater?
The most important information includes barrel diameter, heater width, heating power, voltage, machine type, processed material and, if available, photographs or drawings of the existing heater.