Adhesion Promoters - Corona, Flame Ozone A Technology Update

摘要

The manufacture of polyolefin films by an extrusion process will today almost certainly include as part of the processing line some form of adhesion promoter. For Cast and Blown extrusion this wourld mean corona as the adhesion promoter, and for extrusion coating/laminating corona and ozone. The continued down gauging throughout the extrusion process means significant increases in production outputs and thus the need for the corona pre-treatment systems to be re-evaluated. In the extrusion coating process, the manufacture of many sophisticated packages, there is an interest in optimum adhesion being achieved between laminates of various materials. This ozonisation update will pay particular attention to today's criteria regarding the useof ozone on extrusion coating lines, such as reductions in melt temperatures, improvements in production speeds and the safe use of ozone on a production line. Advanced control systems and a move towards water based inks and adhesives has lead to increasing demands for better treatment performance and sparked a resurgence of popularity and new applications for flame treating plastic films and profiles.