Corona Treaters are used extensively in the film converting industry.

Corona treaters are the most commonly used surface treating technology in the film converting industry. Corona treating is very efficient at raising the surface energy of substrates to enable improved adhesion on a variety of non-porous films. Corona is similar to plasma surface treating in that each rely on the electrical ionization of a gas. Plasma creates a smooth, undifferentiated cloud of ionized gas at much lower voltage level than corona.

There are many different designs of corona treaters depending on the converting application. Some corona treating systems are capable of treating both metallized and non-metallized surfaces. While others are designed to treat only non-conductive surfaces while providing the ability to to use metal segments to treat only certain portions of the web. This is common in film extrusion applications such as blown and cast film.

For coating, laminating & printing corona treatment is required acrosss the entire length of the web. In this case fixed width ceramic electrodes are used to provide reliable treatment.

The best way to determine which technology is best for your application is to put it to the test in a laboratory trial.