Sheet-like composite, in particular packaging material laminate for dimensionally stable food containers, with a polymer inner layer characterized by differential scanning calorimetry

The invention relates to a sheet-like composite comprising as layers of a layer sequence in the direction of an outer side of the sheet-like composite to an inner side of the sheet-like composite a) a carrier layer, b) a barrier layer, and c) a polymer inner layer, wherein a graph of a differential scanning calorimetry of the inner polymer layer Tip A at a temperature TA and a tip B at a temperature TB, wherein the temperature TB is more than the temperature TA, wherein a width of the tip B by at least 3 ° C is less than a width of the tip A. Further, the The invention relates to a container precursor and a closed container comprising the sheet-like composite and a method by which the sheet-like composite is obtainable and a use of the sheet-like composite.