Filling assembly, gasket for use in said filling assembly, and a method for filling liquid
AssigneeTetra Laval Holdings & Finance S.A.
InventorsJens Persson, Göran Hermodsson, Jonas Nilsson, Simo Vallenback
Life of this patent
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Abstract
A filling assembly for filling of a tube of packaging material having a seal starting at a first level, comprises a conduit arranged to lead liquid into the tube of packaging material below said first level and a passage arranged to eject gas through openings into the tube of packaging material below said first level. The filling assembly is characterized in that a gasket is arranged to provide a seal between said filling assembly and said tube of packaging material upstream said openings such that the overpressure P1 downstream the gasket may exceed an ambient pressure Pa upstream the gasket.
Claims15
A filling assembly for filling of a tube of packaging material having a longitudinal seal starting at a first level, said assembly comprising:
- a conduit arranged to lead liquid into the tube of packaging material below said first level,
- a passage arranged to eject gas through openings into the tube below said first level, wherein
- a gasket is arranged to provide a seal between said filling assembly and said tube of packaging material upstream said openings such that the overpressure P1 downstream the gasket may exceed an ambient pressure Pa upstream the gasket, characterized in that an outer diameter of the gasket is smaller than the inner diameter of the tube.
A method for filling liquid into a tube of packaging material comprises the steps of:
- arranging an elevated pressure inside a volume of the tube of packaging material compared to the pressure outside of the tube of packaging material,
- filling liquid into the tube of packaging material, in the volume having elevated pressure.
Dependencies are inferred from the claim text.