A non-through score line is made in the exposed surface of the blister sheet of a blister package. The non-through score line extends from one edge of an individual blister unit to an opposite or adjacent edge, i.e., across the corner of the blister unit. When the blister unit is angulated or flexed...http://www.google.fr/patents/US6516949?utm_source=gb-gplus-shareBrevet US6516949 - Blister pill package with safety backing
