Topic: Plasma treatment for coil coating. Cleaning of aluminum sheets. Removing rolling oils, hydrocarbons. Increasing hydrophilicity.

Plasma treatment for coil coating: removing hydrocarbons, increasing the hydrophilicity of aluminum

Using Openair® plasma, metals such as aluminum can be completely cleaned of unwanted hydrocarbons, such as rolling oils, through the evaporation of volatile components and oxidation to carbon dioxide and water.
To investigate the cleaning efficiency of Openair plasma treatment on aluminum, the research company NanoCraft used the very sensitive method of chemical force microscopy.
To this end, the probe tip was modified using nonpolar hydrocarbon compounds. The measurement was carried out with water as the imaging medium. This ensured detection of even the smallest impurities by their interactions with the probe tip.
At the same time, the surface tension of the material can be selectively increased by plasma activation. The increase in hydrophilicity is measurable; the adhesion of coatings and finishes is greatly improved.
Chemically modified atomic force microscopy:
Left: Adhesion distribution on aluminum without plasma treatment. Interaction with the probe tip: the surface is covered with oily impurities.
Right: Homogeneous adhesion distribution on aluminum after plasma treatment (hydrophilic). No interaction with the probe tip: the surface is free from oily impurities.
Coil Coating Plasmaanlage Griesser AG

Partners & Testimonials

Griesser AG

World premiere: Openair plasma in coil coating

Griesser AG in Switzerland was the first company in the world to achieve environmentally-friendly surface pretreatment of  aluminum strip using Openair® plasma, which avoids the generation of thousands of tons of contaminated waste water annually.

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Plasmavorbehandlung für die Bandlackierung im „coil coating“-Verfahren

Partners & Testimonials


Coil coating – test result: “very good”

At the request of customers, independent research company NanoCraft tested the systems developed by Plasmatreat.

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back to main topic Coil Coating

Plasmatreat North America Inc.
1480 Sandhill Dr., Unit 8,
Ancaster, ON L9G 4V5

Phone: +1 905 304-5200
Fax: +1 905 304-5260

Contact: Mr. Tim Smith

Plasmatreat USA, Inc
2541 Technology Drive, Suite 407
Elgin, IL 60124

Phone: +1 847-783-0622
Fax: +1 847-783-0991

Contact: Mr. Jeff Leighty

Plasmatreat USA, Inc
4th State, Inc.
1260 Elmer Street
Belmont, CA 94002

Phone: +1 650 596 1606
Fax: +1 650 596 1180

Contact: Mr. Wally Hansen

The Green Alternative
Openair® plasma displaces the use of chemicals in the precleaning of aluminium coils
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