Abstract: The invention relates to a sheet-like composite including as layers of a layer sequence, in a direction from an external side of the sheet-like composite to an internal side of the sheet-like composite, a) a carrier layer, b) a barrier layer, and c) a polymeric internal layer, where a graph of a differential scanning calorimetry of the polymeric internal layer includes a peak A at a temperature TA and a peak B at a temperature TB, where the temperature TB is more than the temperature TA, where a width of the peak B is less by at least 3° C. than a width of the peak A. The invention further relates to a container precursor and to a closed container including the sheet-like composite, and also to a process by which the sheet-like composite is obtainable, and to a use of the sheet-like composite.

Abstract: The invention relates to a sheet-like composite comprising as layers of a layer sequence from an outer side of the sheet-like composite to an inner side of the sheet-like composite a) a carrier layer, and b) a barrier layer; said barrier layer a. comprising a polyamide, and b. being characterized by a methylene/amide coefficient, as determined in accordance with the method described herein, in a range from 0.3 to 0.7. Furthermore, the invention relates to a container precursor, to a closed container, to production methods for the aforementioned and to a use of a polyamide in a barrier layer of a sheet-like composite having a carrier layer for producing a food-product container.

Abstract: The invention relates to a sheet-like composite including as layers of a layer sequence, in a direction from an external side of the sheet-like composite to an internal side of the sheet-like composite, a) a carrier layer, b) a barrier layer, and c) a polymeric internal layer, where a graph of a differential scanning calorimetry of the polymeric internal layer includes a peak A at a temperature TA and a peak B at a temperature TB, where the temperature TB is more than the temperature TA, where a width of the peak B is less by at least 3° C. than a width of the peak A. The invention further relates to a container precursor and to a closed container including the sheet-like composite, and also to a process by which the sheet-like composite is obtainable, and to a use of the sheet-like composite.

Abstract: The invention relates to a sheet-like composite including as layers of a layer sequence, in a direction from an external side of the sheet-like composite to an internal side of the sheet-like composite, a) a carrier layer, b) a polymeric intermediate layer, and c) a barrier layer, where a graph of differential scanning calorimetry of the polymeric intermediate layer includes a peak A at a temperature TA and a peak B at a temperature TB, where the temperature TB is more than the temperature TA, where a width of the peak B is less by at least 3° C. than a width of the peak A. The invention further relates to a container precursor and to a closed container including the sheet-like composite, and also to a process by which the sheet-like composite is obtainable, and to a use of the sheet-like composite.

Abstract: The invention relates to a sheet-like composite, comprising as layers of a layer sequence: a) an outer polymer layer, b) a carrying layer following the outer polymer layer, c) a barrier layer following the carrying layer, d) an adhesion-promoting layer following the barrier layer, and e) an inner polymer layer following the adhesion-promoting layer; wherein the adhesion-promoting layer comprises an outer surface of the adhesion-promoting layer and an inner surface of the adhesion-promoting layer; wherein the outer surface of the adhesion-promoting layer i) is adjacent to the barrier layer, and ii) is characterised by a first C?O group absorption maximum; wherein the inner surface of the adhesion-promoting layer A) is adjacent to the inner polymer layer, B) is characterised by a second C?O group absorption maximum, and C) has a first distance to the outer surface of the adhesion-promoting layer; wherein the first C?O group absorption maximum is higher than the second C?O group absorption maximum.