US 2017/0320299 A1Published application

Container Precursor, in Particular for the Manufacture of a Food Container, from a Laminate with a Plastic Gas and Aroma Barrier and a Peeled Edge Region, which is Partially Folded Back on Itself

AssigneeSIG Technology AG

InventorsUlrich Alef, Ingo Jumpertz, Frank Muller, Richard Leufen

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Abstract

The invention relates to a container precursor comprising a wall, wherein the wall a) surrounds an interior region, and b) comprises a first wall region and a second wall region; wherein the first wall region comprises a first layer sequence comprising a first wall layer, a second wall layer and a third wall layer as overlying layers from the interior region outwards; wherein, in the first wall region, a second carrier layer is characterised by a smaller layer thickness than a first carrier layer, or a third carrier layer, or both; wherein the second wall region comprises a second layer sequence comprising first wall layer, a second wall layer and a third wall layer as overlying layers from the interior region outwards; wherein, in the second wall region, the second wall layer is connected to the third wall layer; wherein, in the second wall region, the third carrier layer is characterised by a larger layer thickness than the first carrier layer, or the third carrier layer, or both. Further, the invention relates to a process for manufacturing a container precursor, a container precursor obtainable through this process, a closed container, a process for manufacturing a closed container, a closed container obtainable through this process, a use of the aforementioned container precursor, and a further use of the aforementioned container precursor.

Claims33

Dependent claims

A container precursor (100), comprising a wall (102), wherein the wall (102)

a) surrounds an interior region (101) and
b) comprises a first wall region (103) and a second wall region (104);
wherein the first wall region (103) comprises a first layer sequence, comprising, as overlying layers laid on top of one another from the interior region (101) outwards, a first wall layer (201), a second wall layer (202) and a third wall layer (203);
wherein, in the first wall region (103) the first wall layer (201) is connected to the second wall layer (202) and the second wall layer (202) is connected to the third wall layer (203);
wherein the first wall layer (201), as first wall layer sequence from the interior region (101) outwards, comprises a first barrier layer (204), comprising a barrier plastic for at least 70% by weight relative to the weight of the first barrier layer (204), and a first carrier layer (205);
wherein the second wall layer (202), as second wall layer sequence from the interior region (101) outwards, comprises a second carrier layer (206) and a second barrier layer (207), comprising the barrier plastic for at least 70% by weight relative to the weight of the second barrier layer (207);
wherein the third wall layer (203), as third wall layer sequence from the interior region (101) outwards, comprises a third barrier layer (208), comprising the barrier plastic for at least 70% by weight relative to the weight of the third barrier layer (208), and a third carrier layer (209);
wherein, in the first wall region (103), the second carrier layer (206) is characterised by a smaller layer thickness than the first carrier layer (205), or the third carrier layer (209), or both;
wherein the second wall region (104) comprises a second layer sequence, comprising, as overlying layers from the interior region (101) outwards, the first wall layer (201), the second wall layer (202), and the third wall layer (203);
wherein, in the second wall region (104), the second wall layer (202) is connected to the third wall layer (203);
wherein, in the second wall region (104), the third carrier layer (209) is characterised by a larger layer thickness than the second carrier layer (206), or the first carrier layer (205), or both.

8 more elements

A process (500), comprising, as process steps

a) Provision of a sheet-like composite, comprising
i) A composite layer sequence (501), comprising
A) a composite carrier layer (505), and
B) a composite barrier layer (504), comprising a barrier plastic for at least 70% by weight relative to the weight of the composite barrier layer (504),
ii) an edge region (503), and
iii) an inner region (502), abutting against the edge region (503);
b) Reduction of the layer thickness of the composite carrier layer (505) in the edge region (503);
c) Creation of a fold (506) in the edge region (503) to obtain a first edge fold region (507) and a further edge fold region (508),
wherein the first edge fold region (507) and the further edge fold region (508) abut against each other along the fold (506);
d) Bringing the first edge fold region (507) into contact with a first part (509) of the further edge fold region (508), and
connecting a further part (510) of the further edge fold region (508) to the inner region (502);
e) Creation of a further fold (514) in the inner region (502) to obtain a first composite fold region (511) and a further composite fold region (512),
wherein the further composite fold region (512) comprises the edge region (503);
and
f) Connecting the first composite fold region (511) to the first part (509) of the further edge fold region (508) and the further part (510) of the further edge fold region (508).

12 more elements

Dependencies are inferred from the claim text.