witness on the opening of a sealed package with window for access to content richiudibile by self-adhesive label

摘要

Opening witnesses of a sealed package of flexible film with an opening device reclosable by a self-adhesive label (1) which seals a window for accessing the content, having a pre-defined area, through the underlying film of the package, comprising incisions (T) in the self- adhesive label in areas resting on perimetric areas of a liftable portion of the label, projecting with respect to the perimeter of said pre-defined opening area through the film of the package, are made in a more efficient and simpler way. The incisions (T) in the label do not cross its edges and comprise some U-shaped cuts (t1,t2,t3) arranged side by side, the two rectilinear and parallel branches that extend from the base of each U having a ratio between 6 and 20 between the extension and the separation distance between adjacent branches and in which the straight extreme branches of a first U-shaped cut and the last U-shaped cut, respectively, of the cuts side by side, are connected together by an arched cut (Tb).