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US 11,008,144 B2Granted
Container precursor, in particular for producing a dimensionally stable foodstuff container, having a sheetlike composite, a first and a second wall region
AssigneeSIG Technology AG
InventorsUlrich Alef, Thomas Schumacher, Norbert Peter Herzog
Life of this patent
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Abstract
The present invention refers to a container precursor, comprising a composite sheet which comprises a) an outer polymer layer, b) a colour application, c) a carrier layer, and d) a barrier layer; wherein a wall of the container precursor comprises a first wall region and a second wall region. The invention further refers to a closed container, obtainable from the container precursor; and to a closed container having the above composite sheet, the first and the second wall region.
Claims12
A container precursor, comprising a composite sheet;
- wherein the composite sheet comprises as a layer sequence in a direction from an outer surface of the composite sheet to an inner surface of the composite sheet:
- a) an outer polymer layer,
- b) a colour application,
- c) a carrier layer, and
- d) a barrier layer;
- wherein the composite sheet forms a wall of the container precursor;
- wherein the wall
- a. at least partly surrounds an interior of the container precursor, and
- b. comprises a first wall region and a second wall region;
- wherein the first wall region partly comprises as a layer sequence from the interior outwards a first ply, a second ply, and a third ply, in each case of the composite sheet;
- wherein in the first wall region the first ply is bonded to the second ply and the second ply is bonded to the third ply;
- wherein the second wall region partly comprises as a layer sequence from the interior outwards the first ply, the second ply, and the third ply, in each case of the composite sheet;
- wherein in the second wall region the second ply is bonded to the third ply;
- wherein at least the carrier layer and the barrier layer extend into the first ply, the second ply, and the third ply;
- wherein in the first wall region:
- in the second ply a layer thickness of the carrier layer is less than in the first ply, or in the third ply, or in both;
- wherein in the second wall region:
- in the third ply a layer thickness of the carrier layer is more than in the first ply, or in the second ply, or in both;
- wherein the colour application comprises one or more colourants in a total proportion of 1 to 60% by weight, based on the weight of colour application.
16 more elements
A closed container, comprising a composite sheet;
- wherein the composite sheet comprises as a layer sequence in a direction from an outer surface of the composite sheet to an inner surface of the composite sheet:
- a) an outer polymer layer,
- b) a colour application,
- c) a carrier layer, and
- d) a barrier layer;
- wherein the composite sheet forms a wall of the closed container;
- wherein the wall
- a. at least partly surrounds an interior of the closed container, and
- b. comprises a first wall region and a second wall region;
- wherein the first wall region partly comprises as a layer sequence from the interior outwards a first ply, a second ply, and a third ply, in each case of the composite sheet;
- wherein in the first wall region the first ply is bonded to the second ply and the second ply is bonded to the third ply;
- wherein the second wall region partly comprises as a layer sequence from the interior outwards the first ply, the second ply, and the third ply, in each case of the composite sheet;
- wherein in the second wall region the second ply is bonded to the third ply;
- wherein at least the carrier layer and the barrier layer extend into the first ply, the second ply, and the third ply;
- wherein in the first wall region:
- in the second ply a layer thickness of the carrier layer is less than in the first ply, or in the third ply, or in both;
- wherein in the second wall region:
- in the third ply a layer thickness of the carrier layer is more than in the first ply, or in the second ply, or in both;
- wherein the colour application comprises one or more colourants in a total proportion of 1 to 60% by weight, based on the weight of colour application.
16 more elements
Dependencies are inferred from the claim text.