Abstract: Systems and methods produce or provide a folded connection, sealed by means of an adhesive composition, between a first sheetlike element and a second sheetlike element. The systems and methods bond a second flange of the second sheetlike element with at least one layer of an adhesive composition to a first flange of the first sheetlike element, in such a way that an end of the second flange of the second sheetlike element is indented by a distance relative to an end of the first flange of the first sheetlike element. The systems and methods bead the first flange of the first sheetlike element around the second flange of the second sheetlike element and, after the beading, an adhesive-composition part is placed around an edge of the first flange of the first sheetlike element and bonded to a second surface of the first flange of the first sheetlike element.

Abstract: The present invention relates to a multilayer security seal comprising a carrier and an adhesive layer arranged on the entire area underneath the carrier, the following layers being arranged between carrier and adhesive layer in any case: a) a first layer—marking layer—not applied to the entire area, b) a second layer—contrast layer—applied to the entire area. It is proposed that an individual identifier, which is at least partly provided in the composite, be contained for the purpose of verification.

Abstract: The present invention relates to a sticker for sticking onto an object, having an upper side (Ia) and an underside (Ib), having a substrate (2) which is provided on the upper side (Ia) and has a region (3) for storing an optical structure, having a contact surface (4, 11) which is provided on the underside (Ib), and having an adhesive (5, 6, 12, 14) which is connected to the contact surface (4, 11) for sticking the sticker (A1, A2, A3, A4, A5, A6) onto the object. The problem of specifying a sticker for sticking onto an object, which sticker ensures satisfactory quality of the reproduction of the information contained in the optical structure even in the case of unevennesses of the surface to be adhesively bonded, is solved by at least one part region of the substrate (2) being decoupled from the object in force terms in the adhesively bonded state.

Abstract: Security label for use as a detector of first-time opening of an article, having an adhesive layer for application to the article, and a detection layer, the detection layer having an optical feature which irreversibly indicates an attempt at detachment from the article, the security label having an extensibility of at least 50% and being removable substantially without residue from the article by stretching, characterized in that the security label has a predetermined breakage point at which the security label can be divided into two parts on first-time opening.