OzoneTEC – Surface Treatment with Ozone


Tantec has developed its OzoneTEC System to treat the inside of products such as surfboards, coolers, ice boxes, jacket pipes, small boats, etc. – products that consist of fiberglass on the outside and foam on the inside – also called sandwich construction.

The OzoneTEC produces ozone, which is blown into the shell and is left inside for a while before it is sucked out again. Thereafter the Polyurethane Foam is injected. It then hardens and adheres to the inside of the shell.


  • Ability to treat the interior of rotomolded parts
  • Higher surface energy levels achieved compared to stock resins
  • On-demand treating
  • Flexible settings to allow for treatment of various product sizes and dimensions
  • Small footprint
  • No exotic treating gases required

Treatment of rotomolded parts

Rotomolded parts are typically hollow thermoset plastic parts. The resin is heated and melted, and by rotating the mold the resin fills the mold cavity creating the part with a hollow inside.

Many of these parts require foam insulation for improving the thermal properties and rigidity of the parts.

Continuous rotation uniforms walls

Continuous rotation of the mold during the process ensures uniform thicknesses of the walls. The OzoneTEC plays a key role in helping to activate the inside surface of the part to improve adhesion.

An OzoneTEC-system typically consists of a generator, HV-transformer, control box, compressed air system, and a customized frame. OzoneTEC can be installed as an in-line process or as a standalone solution.

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