Topic: Plasma system for coil coating. Coil coating process without chemicals. Cleaning of aluminum sheets. Surface activation prior to corrosion protection coating and painting.

Plasma systems for the coil coating process – efficient ultrafine cleaning without chemicals or wastewater

An example of the high efficiency of Openair® plasma activation is the manufacture of pre-coated sheets (coil coating). These sheets are needed in the industrial production of household appliances and in the automotive industry.
In the coil coating process, metals strips are provided with a surface coating or varnishing to achieve optimum protection against corrosion and to simplify subsequent production processes. For long-term layer and varnish adhesion, the aluminum sheets must first be completely cleaned of rolling oils in an ultrafine cleaning process.
 Grieser overall system
 Openair® plasma pretreatment of sheets
Openair® plasma removes all residues reliably and efficiently while activating the material surface for optimal adhesion and a flawless finish. The Openair® plasma treatment can be integrated inline directly upstream of pretreatment in the rolling mill.
Moreover, the dry plasma process is particularly environmentally friendly. The large amounts of chemicals that would otherwise be required for ultrafine cleaning are omitted entirely.
Also, the time- and energy-intense drying processes necessary in wet chemical solutions are no longer required.

Advantages of Openair® plasma systems for coil coating:

  • High efficiency in the cleaning of aluminum sheets
  • Surface activation prior to corrosion protection coating and painting
  • Saving water, chemicals and wastewater
  • Possibility of one-sided or two-sided pretreatment
  • Variable nozzle configuration depending on the degree of contamination
  • Cost-efficient inline integration
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.

Read reference story

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.

Read reference story

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
Automotive World 2017
Asia's largest exhibition for automotive technologies

January 18 – 20, 2017
East Hall 6, E54-17
Tokyo Big Sight
Tokyo, Japan

MD&M West
World's Largest Annual Medtech Event

February 7 – 9, 2017
Anaheim Convention Center
Anaheim, CA , United States