Patent ID: 9435780
Filing Date: 2016-09-06
CPC Classification: B31B,G01N

Claim Text:
1. A method for testing at least one box blank formed from flat material, said at least one box blank being transported in a running direction and being folded transversely thereto in layers on one another by means of a folding unit, said folding unit having an area in which said blank box has not been folded over completely, said at least one box blank being guided along on at least one blade, onto which at least one of said layers is folded, so that the at least one blade is located between said layers, and at least one component comprising a detector and emitter, said component being located opposite said at least one blade, said component being situated outside said at least one box blank, wherein waves are propagated between said at least one blade and said at least one component, said at least one blade and said at least one box blank having at least one physical property with respect to said waves which differ from each other, said at least one blade being supported by at least one of said layers and said at least one blade being supported by a support structure only in said area, said waves being detected by said detector to obtain an image subjected to image processing.