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Plasma Comparison

SPECIFICATIONS TST PLASMA CORONA DISCHARGE
Average Power 100W 1000W
Plasma Currents Low High
Main Direction of the Energy Transfer From the electrode to the surface of the material Between electrodes parallel to the surface of the material
Plasma Temperature Low High
Exposure Time Unlimited Very Limited
Plasma Frequency High Low
Ozone Generation Low High
Noise Level Low High
Overall Efficiency High Low
Surface Area Covered from a Single Nozzle (Head) 2" diameter circle 2" length narrow curve
Ability to Treat Patterned Surfaces Unlimited Limited
Ability to Treat Inner Surfaces Unlimited Very limited
Ability to Treat Heat Sensitive Surfaces Unlimited Very limited
Ability to Treat Thin Objects (Fiberoptics, Contact Lenses, Wire Insulation, etc.) Yes No
Special Additives for Chemical Surface Modification Yes No
Thin Film Deposition Yes No
Overall Flexibility High Low

Tri-Star Technologies plasma machines stand aside from a wide variety of so called Corona Discharge systems for 3D surface treatment. Although both techniques are based on the same physical phenomenon, namely Electrical Breakdown of Gases at Atmospheric Pressure, or Electrical Discharge, the methods of creation and application of this discharge are completely different.

As can be seen from the preceeding table, the TST Plasma is much more effective and flexible than Corona Discharge 3D Treaters.

All of the Corona Systems require at least 2 electrodes to initiate and to maintain a discharge. In the case of web treatment it is done quite effectively by placing the moving film between High Voltage electrode (metal rod or bar) and a grounded metal roll. However, this would hardly work for 3D objects, since the breakdown distance between web electrodes is limited and usually does not exceed ¼".