Method and a packaging apparatus for forming sealed packages
AssigneeTetra Laval Holdings & Finance S.A.
InventorsDaniele Anzaldi, Nicola Garuti, Yutaka Kaneko, David Arturo Fuga Martin
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Abstract
A method for forming sealed packages filled with a pourable product comprises at least the steps of forming a tube from a web of packaging material, filling the pourable product into the tube for forming a product column within the tube and directing, during the step of forming and the step of filling, a sterile gas into the product column for forming and/or maintaining a gas cushion within the product column.
Claims17
A method for forming sealed packages filled with a pourable product comprising at least:
- forming a tube from a web of packaging material;
- filling the pourable product into the tube for forming a product column within the tube;
- and
- directing, during the forming and the filling, a sterile gas into the product column for forming and/or maintaining a gas cushion within the product column which divides the product column into an upper portion of the product column and a lower portion of the product column such that the gas cushion directly contacts a bottom of the upper portion of the product column and a top of the lower portion of the product column.
A packaging apparatus for forming sealed packages filled with a pourable product comprising at least:
- a tube forming and sealing device configured to form a tube from a web of packaging material and to longitudinally seal the tube;
- a filling device adapted to direct, in use, a pourable product into the tube for obtaining a product column within the tube;
- a gas feeding device configured to direct during operation of the tube forming and sealing device and the filling device a sterile gas into the product column such that, in use, a gas cushion is formed and/or maintained within the product column which divides the product column into an upper portion of the product column and a lower portion of the product column such that the gas cushion directly contacts a bottom of the upper portion of the product column and a top of the lower portion of the product column.
Dependencies are inferred from the claim text.