PLASTINUM Spot Cooling with CO₂

Advancing temperature control in injection moulding by cooling hotspots with carbon dioxide

Our PLASTINUM® Spot Cooling solution advances temperature control in injection moulding by ensuring uniform temperature distribution on the mould cavity surface. It uses liquid carbon dioxide (LIC) as an effective cooling medium for hotspots. Comprising control devices, distributors, solenoid valves and capillary tubes, our spot cooling package can be easily retrofitted to existing installations.

Supplementing conventional water cooling, this patented solution is ideal for areas of injection-moulded products that are difficult to access or prone to material accumulation. In other words, areas where water or other cooling methods are ineffective or cannot be implemented.

PLASTINUM Spot Cooling can accelerate cycle times by up to 50% depending on the part geometry and material. In addition, carbon dioxide (CO₂) results in more even temperature distribution along the mould surface. This greatly enhances the quality of the moulded part by eliminating surface defects, sink marks and warpage.

Injected-moulded part of an automobile headlight casing

Precision engineering

Our CO2 supply and control concepts are engineered for controlled injection to ensure stable, predictable cooling results. They include a tank with pressure-boosting equipment to supply liquid, bubble-free CO2. The CO2 flows under high pressure (approx. 60 bar) through small, flexible capillary tubes to the point of use, where it expands to create a snow and gas mixture at a temperature of -79°C. The gaseous CO2 leaves the cavity through open exhaust channels.


  • Significant reduction of cooling times
  • Uniform temperature in mould and moulding
  • Higher quality and efficiency
  • Intensive heat removal in problem areas (thin and long cores, material accumulations)
  • Thin, flexible pipes, standard sizes
  • Easy installation, retrofitting is often possible
  • No sealing required

Mould with conventional water cooling (channels) and C02 (spot) cooling of the core (pin)
Mould with conventional water cooling (channels) and C02 (spot) cooling of the core (pin)

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