In the use of microwave energy to remove moisture from a moving web, such as that moisture contained within transverse glue lines between superimposed sheets of the web for the purpose of holding the sheets together, the web is passed through a serpentine wave guide having a number of serially connected...http://www.google.de/patents/US4234775?utm_source=gb-gplus-sharePatent US4234775 - Microwave drying for continuously moving webs
