CO2 laser processing of multi-layer packaging films

This paper describes a mechatronic approach to the design and implementation of a noncontact sealing system for multilayer lidding films, as used in aseptic containers for food and medical packaging. The method proposed uses a beam-steered laser to seal the product, thereby enabling virtually instant changeover from one product line to another while reducing sealing machine tooling costs and downtime. Results are presented which show that the process may produce seals of higher strength than the conventional thermal/mechanical process.