Air Plasma Surface Treatment

Dec 12th, 2008 | By Mark Plantier | Category: Air Plasma, Plasma Technologies

Air plasma surface treaters use either blown ion or blown arc discharge technology. A key difference between the two atmospheric plasma systems is that blown ion treatment is effective with both conductive and non-conductive surfaces.

Blown Arc

Blown arc systems create air plasma by blowing atmospheric air past two high-voltage powered electrodes and is sometimes referred to as corona treatment. The electrical discharge positively charges the ion particles surrounding it. Through direct contact, these particles positively charge the treated area of the object’s surface. This makes the surface more receptive to any applied substance such as inks. Enercon’s Dyne-A-Mite HP is an example of a blown arc plasma system.

To compare the advantages and application considerations, request a copy of the plasma treatment technology comparison chart.

Blown Ion

Blown-ion systems push pressurized air past a single electrode which discharges inside the treater head. The electrode energizes electrons which, through bombardment, create positively charged ions within the discharge chamber. The air pressure forces the ions to accelerate and stream out of the tip of the head at high velocity toward the substrate surface. Again, through direct contact, these ions positively charge the object’s surface, increasing its surface energy and making it more receptive to inks and coatings. Because the discharge occurs inside the treater head treatment is possible for both conductive and non-conductive systems. Enercon’s Dyne-A-Mite IT is an example of a blown ion plasma machine.

To compare the advantages and application considerations, request a copy of the plasma treatment technology comparison chart.

2 comments
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  1. Can you generate negative ions in air with a plasma system?

    I want to spray negative charge. Please respond.

  2. Brian,
    With our atmospheric plasma systems, an RF processing reactor is used by which reactive radicals, positive and negative ions, neutrals and molecules are produced when the glow discharge is formed by the continuous flow of feed gas. With atmospheric plasma discharges, negative ions can be efficiently generated in the plasma sheath, due to interactions of high-energy positive ions with neutrals.

    So, to answer your question, the ambient air surrounding the discharge will be infused with negative ions. The discharge is usually directed at a surface. I will need more information to know how or where you want to distribute negative ions in order to direct you to the appropriate system configuration.

    Rory Wolf
    V.P. Business Development; Technology Manager - Atmospheric Plasma & Flame Systems
    Enercon Industries

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