US 12,291,383 B2
Push-through cover foil with a plurality of non-intersecting material weakenings and push-through pack with such a cover foil
Andreas Gmeindner, Obergünzburg (DE); Tobias Fackler, Illerbeuren (DE); and Fabio Daidone, Ronsberg (DE)
Assigned to Huhtamaki Flexible Packaging Germany GmbH & Co. KG, Ronsberg (DE)
Filed by Huhtamaki Flexible Packaging Germany GmbH & Co. KG, Ronsberg (DE)
Filed on Mar. 29, 2023, as Appl. No. 18/127,919.
Claims priority of application No. 10 2022 107 651.2 (DE), filed on Mar. 31, 2022.
Prior Publication US 2023/0312208 A1, Oct. 5, 2023
Int. Cl. B65D 75/32 (2006.01)
CPC B65D 75/327 (2013.01) [B65D 2575/3227 (2013.01); B65D 2575/367 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A push-through cover foil, comprising at least one material layer with material weakenings introduced into it in a regular pattern, through which locally a material cohesion of at least one material of the cover foil is broken, where the material weakenings proceed in the thickness direction of the cover foil without completely penetrating through the cover foil, where the material weakenings exhibit a linear course orthogonally to the thickness direction,
wherein the cover foil exhibits a plurality of parallel rows of material weakenings, where each row exhibits a plurality of material weakenings parallel to one another and arranged with a weakening spacing from one another, where the parallel rows of material weakenings are arranged with a row spacing from one another such that neither the material weakenings of the individual rows among themselves nor the material weakenings of adjacent rows intersect one another,
wherein running directions of material weakenings extend orthogonal to the thickness direction of the cover foil,
wherein running directions of material weakenings of a row enclose with the row extension direction a setting angle,
wherein a row of material weakenings parallel to one another exhibits only material weakenings parallel to one another,
wherein the cover foil exhibits a plurality of parallel equal rows, in which material weakenings are configured with a uniform setting angle and with a uniform weakening spacing,
wherein the plurality of equal rows are first rows in which material weakenings are configured with a uniform first setting angle and with a uniform first weakening spacing, where the cover foil exhibits a plurality of parallel second equal rows in which material weakenings are configured with a uniform second setting angle different from the first setting angle and with a uniform second weakening spacing, where between two first rows there is arranged at least one second row and where between two second rows there is arranged at least one first row.