Corona Treater Station Design & Construction: Meeting The Converting Challenge

Abstract

Treater station construction has undergone significant modification to accommodate rapid change in converting applications: lighter webs, higher line speed operation and advanced substrates (e.g., co-extruded, metallized and very thin substrates). This range of developments has introduced the requirement for nips at the treater roll, using the treater roll as a “pull roll” and modifying the treater station design to reduce wrinkling and “backside” treatment. Several different techniques were tried, but one, dual dielectric/coated roll technology has become by far the primary method used to overcome these problems. Various technologies are discussed and the current state-of-the-art in equipment, control parameters and applications are explained.