Monitoring faulty label removal in labelling system

摘要

In the application of adhesive labels to a series of articles 3 by a vacuum drum 7, faulty/incorrect labels detected upstream of the drum are removed from the drum. Detection is by scanning means 8 as the labels advance on a first web. Removal is by a second web 9 (of paper) which moves into contact with the adhesive side of faulty/incorrect labels. Further scanning means 15 monitor removed labels on the web 9 to verify and reconcile them with those identified by the upstream scanning means 8.