US 12,106,684 B2
Film composite with protection against tampering
Katharina Dantonello, Munich (DE); Bernhard Schirdewahn, Munich (DE); Sebastian Dick, Munich (DE); Mark Walter, Unterschleissheim (DE); and Jens Vor Der Brueggen, Munich (DE)
Assigned to Schreiner Group GmbH & Co. KG, Oberschleissheim (DE)
Filed by Schreiner Group GmbH & Co. KG, Oberschleissheim (DE)
Filed on May 13, 2022, as Appl. No. 17/743,721.
Claims priority of application No. 10 2021 114 841.3 (DE), filed on Jun. 9, 2021.
Prior Publication US 2022/0398944 A1, Dec. 15, 2022
Int. Cl. G09F 3/00 (2006.01); G09F 3/10 (2006.01)
CPC G09F 3/0292 (2013.01) [G09F 3/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A tamper-evident film composite comprising:
a base film;
a cover layer disposed in the film composite as the uppermost layer;
an intermediate film arranged between the base film and the cover layer;
a laser-inscribable layer which is arranged in the film composite between the base film and the intermediate film; and
an adhesion layer disposed between the intermediate film and the cover layer for bonding the intermediate film to the cover layer;
wherein lines of weakening are provided in the film composite which extend within the base film and within the laser-inscribable layer and within the intermediate film and;
wherein, the adhesion layer is formed such that an adhesive force of the adhesion layer to the intermediate film is lower than an adhesive force of the adhesion layer to the cover layer.