Integrally blow-moulded bag-in-container having an inner layer and the outer layer made of the same material and preform for making it
AssigneeAnheus Er-Busch Inbev S.A.
InventorsSarah Van Hove, Daniel Peirsman, Rudi Verpoorten
Life of this patent
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Abstract
An integrally blow-moulded bag-in-container has as integrally blow-moulded bag-in-container wherein the same polymer is in contact on either side of the interface between the inner and outer layers. A preform for blow-moulding a bag-in-container has an inner layer and an outer layer, wherein the preform forms a two-layer container upon blow-moulding, and wherein the thus obtained inner layer of the container releases from the thus obtained outer layer upon introduction of a gas at a point of interface between the two layers. The inner and outer layers are of the same material.
Claims19
A preform for blow-moulding a bag-in-container, comprising:
- an inner layer and an outer layer, wherein the preform forms a two layer container upon blow-moulding, and wherein the thus obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a gas at at least one point of interface between the two layers, wherein the inner and outer layers are the same material;
- wherein the preform comprises a mouth defined in a neck region, the mouth comprising a circumferentially-extending lip which defines an axially outer surface of the preform;
- and
- wherein the at least one point of the interface is a vent disposed at, and oriented coaxially with, the mouth, the vent extending axially from an opening in the axially outer surface of the preform at least partway through the neck region.
A preform for blow-moulding a dispensing bag-in-container, comprising:
- an inner layer and an outer layer joined at least at a neck region by an interface that extends at least partway between the inner layer and the outer layer, the interface being in fluid communication with atmosphere by one or more interface vents disposed at, and oriented coaxially with, a mouth of the preform defined by the neck region, wherein the preform forms a two layer container upon blow-moulding, and wherein the thus obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a pressurised gas through the one or more interface vents to dispense a liquid contained therein, wherein the inner and outer layers are the same material,
- wherein the inner and outer layers both define an axially outer surface of the preform.
A preform for blow-moulding a dispensing bag-in-container, comprising:
- an inner layer and an outer layer joined at least at a neck region by an interface that extends at least partly between the inner layer and the outer layer, the interface being in fluid communication with atmosphere by a plurality of interface vents disposed at, distributed around, and oriented coaxially with, a mouth of the preform defined by the neck region, wherein the preform forms a two layer container upon blow-moulding, and wherein the thus obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a pressurised gas through the plurality of interface vents, wherein the inner and outer layers are the same material.
Dependencies are inferred from the claim text.