Sheet-like composite, in particular for producing dimensionally stable food containers, having a roof surface formed by a multiplicity of partially convexly curved creasing lines

摘要

The present invention relates to a sheet-like composite, including as superimposed layers a) a carrier layer, b) a barrier layer, and c) a polymer inner layer, wherein the sheet-like composite has a plurality of creasing lines arranged and configured so that a closed container is obtainable by folding the sheet-like composite along the creasing lines and joining seam surfaces of the sheet-like composite to obtain seams closed container has a roof surface, wherein a first part of the score line of the plurality of score lines at least partially forms a periphery of a first partial surface of the roof surface, wherein the score lines of the first part, with respect to the first partial surface of the roof surface, at least partially convexly bent, wherein the first partial surface of the roof surface has a first length in a longitudinal direction and has a second length in a circumferential direction perpendicular to the longitudinal direction, wherein a ratio of the first length to the second length is in a range of 0.2 to 2.0. Furthermore, the invention relates to methods for producing a sheet-like composite, a container precursor and a closed container as well as the aforementioned process products; another container precursor; another closed container; and a use of the sheet-like composite.